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Produce fabrication fiberglass and articles thereof

Produce fabrication fiberglass and articles thereof

Effective date : This invention relates to a novel apparatus and process for producing thermoplastic articles. In one aspect, the invention pertains to a process for manufacturing fiberglass products using a fiberglass material consisting of fiberglass strands commingled with heat-formable polypropylene strands. A molding apparatus comprising: a an air pressure chamber with an open side; b a flange plate fitted to the open side of the air pressure chamber, said flange plate having an opening therein for receiving a mold; c an upper bladder associated with the flange plate and covering the opening; d a base pressure plate; e a mold positioned on the base pressure plate; and f a locking mechanism for securing the air pressure chamber with the base pressure plate, and balanced air pressure in each chamber during molding. There are many existing processes for forming thermoplastic thermoforming articles including vacuum molding, injection molding, extrusion molding and the like.

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US4030953A - Method of molding fiberglass reflecting antenna - Google Patents

This is a division of application Ser. This invention relates to novel binder compositions useful in the fabrication of composite articles such as fiber reinforced composite articles. Fiber reinforced articles such as glass fiber reinforced furfuryl alcohol resin articles are well known as being particularly desirable for use as vessels, containers and other articles used in systems requiring a high degree of chemical resistance, high strength, structural stability and so forth. Various methods have been used in the fabrication of fiber reinforced articles, including, for example, "hand layup" fabrication and "spray-up" fabrication, as well as others.

For example, U. The disclosures of these two patents are incorporated herein by reference thereto. In the fabrication of fiber reinforced composite articles, binders, and particularly furan type binders, that is, binders containing derivatives of furan, are used to bind the reinforcing fibers and to impart strength to the composite articles.

Dilution of the furan binders with furfural in varying amounts has been found advantageous from the standpoint of increasing corrosion resistance. Dilution of binders with fufural imparts high corrosive resistance characteristics and thus its use has been particularly desirable when the reinforced composite articles are intended to be used under corrosive conditions.

However, there has been some objection to the use of furfural-diluted binder systems because of the objectionable odor of furfural and in recent years a desire to avoid human exposure to furfural vapors. It has now been unexpectedly found that hydroxymethylfurfural can be advantageously used in lieu of furfural in furan binder systems.

By "furan binder" is meant a composition prepared from compounds having one or more furan rings therein. The use of hydroxymethylfurfural in such binder systems eliminates the objections associated with use of furfural and thus this discovery is broadly applicable to binders used in various applications.

The use of 5-hydroxymethylfurfural in lieu of furfural as a diluent in furan binders results in reinforced composite articles which exhibit greater retention of flexural strength over periods of time than articles produced from furfural-diluted binders in accordance with the prior art. Representative furan binders which are useful in fabricating composite articles include, for example, furfuryl alcohol homopolymer resins, furfuryl alcohol-formaldehyde resins, furfuryl alcohol-furfural-formaldehyde resins, furfuryl alcohol-phenol resins, furfuryl alcohol-urea-formaldehyde resins, furfuryl alcohol-urea-phenol resins and the like.

Furan binders for fabricating glass laminates are described in U. These patents disclose binders comprising furfuryl alcohol-formaldehyde resins having a formaldehyde-furfuryl alcohol ratio of 0. Most preferred resin binders for fabricating glass-reinforced laminates are furfuryl alcohol homopolymers. The hydroxymethylfurfural is incorporated with the furan binder after pre-polymerization of the furan resins to a desired viscosity.

The optimum viscosity for the binder system depends to large extent on the method of fabrication of the reinforced composite articles. Thus, in hand layup fabrication the entire process is basically a batch process in which the layers of resin and reinforcement are applied alternately.

In hand layup work, and in pre-preg techniques, relatively high viscosities are desirable, although the hand layup techniques use resins which are far less viscous than those resins which are left on the reinforcement in the pre-preg techniques. In hand layup work, however, it is essential that the initial viscosity of the liquid resin be low enough to provide for the formation of a relatively fine spray of catalyzed resin, to provide ready penetration and wetting by the liquid throughout the fiberous reinforcement and to provide minimum tendency of the resin to remain adhering to the roller or other working tool.

When the viscosity is too high, the rollers tend to adhere to the resin in the applied reinforcement material-liquid-resin mass, with result that the highly viscous reinforcement material-liquid-resin mass can be disrupted or literally torn apart as the roller is withdrawn therefrom. In addition to developing minimal cohesion between the applied fiber-resin layer and the resin-wetted working roller, the lower viscosity resins enhance the working out of air bubbles from the fiber-resin layer.

On the other hand, relatively high viscosities are desirable inasmuch as less shrinkage is encountered upon cure and more manageable or more tolerable exotherms are usually encountered on the shaping element when higher viscosity resins are employed. Relatively high initial viscosity is characteristic of liquid resins in which the early stage of polymerization has been carried out at least to some extent in a suitable reactor.

Naturally, this controlled advancement of the resinification or condensation reaction involves generation and disposition of whatever exotherm is generated during that particular degree of advancement. Consequently, the extent of polymerization or condensation which can be encountered after that resin is catalyzed and applied to the shaping element is diminished by the degree to which the controlled precondensation is carried out in a reactor.

Hence, the more advanced resins, that is, resins having high viscosity, relatively speaking, are also characterized as exhibiting diminished exotherm during the course of cure of the fabricated article. Obtainment of a particular binder viscosity is not a feature of the present invention and the binder viscosity will be governed primarily by the method of fabrication of the composite articles. Pre-polymerization or pre-resinification of the furan binder using a variety of acid catalysts can be accomplished by known procedures such as described in U.

The binder systems disclosed herein are applicable in the production of a wide variety of composite articles in which a binder is commonly employed. Likewise, various methods of fabrication of the composite articles can be utilized as is known in the art and the binder viscosity and its method of application can be varied as is known. In practice, when the furan binders are used in fabricating composite articles, the binders are generally cured with the aid of a suitable catalyst which is usually an acid catalyst.

The choice of catalyst is dependent to large extent on the contemplated method of fabrication of the composite articles. The method of fabrication governs the desired curing time or "bench life" of the catalyzed binder system as discussed in U. Here again, the selection of a particular catalyst to employ with the hydroxymethylfurfural diluted binder is not a feature of the present invention and a catalyst can be routinely selected as is known in the art to provide a catalyzed furan binder system in accordance with this invention.

Merely representative of acid catalysts for curing furan binders are toluene sulfonic acid, aniline hydrochloric salts, phenol sulfonic acid, acid chlorides, benzene sulfonic acid, sulfonic acid salts, phthaloyl chloride, hydrochloric acid, phosphoric acid, maleic acid, zinc chloride, sulfuric acid and the like. The following examples set forth test data which illustrate the advantages of the present invention. In obtaining all of the data set forth in the examples, except as hereinafter specified, reinforced glass laminate articles were made from five glass layers, that is, two 10 mil "C" glass chemical resistant surfacing veils at opposite faces and three chopped strand mat layers in between.

These reinforced glass laminates were prepared as follows:. Mylar polyester film was supported on a smooth metal surface which serves as the shaping surface. A C-veil was then layed on the resin binder and rolled until it was completely wet with the binder. The first ply of chopped fiberglass filler was layed down and rolled until it was completely wet with binder.

Finally, the final C-veil layer was added and rolled until no coated fiberglass protruded from the surface and the laminate was uniform. The post cure was performed to reduce the overall test time and post curing is not necessary in practice. The amount of binder used was approximately three times the weight of fiberglass utilized. As a catalyst for the resin binder A, o-phthaloyl chloride was used in an amount of 3. As a catalyst for the resin binder B, o-phthaloyl chloride was used in an amount of 2.

ASTM C procedure. Throughout this application flexural strength reported as pounds per square inch was determined by the procedure of ASTM D and flexural modulus is reported in pounds per square inch. Initially, glass laminates prepared using Binder A exhibited flexural strength of 20, pounds per square inch and a flexural modulus of , pounds per square inch while the glass laminates prepared by using Binder B exhibited an initial flexural strength of 13, pounds per square inch and flexural modulus of , pounds per square inch.

Reinforced glass test panels were fabricated as described above using as the fibrous reinforcement glass fibers as shown in Table II. Binder A and Binder B were the same as above. A catalyst consisting of 1 part of dimethyl phthalate and 7 parts of phthaloyl chloride was used for Binder A in an amount of 3.

Glass 2 is fiberglass available commercially from Owens Corning Company under the trade designation, OCF containing Glass 3 is fiberglass available commercially from Owens Corning Company under the trade designation, OCF containing Glass 4 is fiberglass available commercially from Owens Corning Company under the trade designation, OCF containing Glass 5 is fiberglass available commercially from Owens Corning Company under the trade designation, OCF containing Glass 6 is fiberglass available commercially from Certainteed Company under the trade designation, CT-M containing Glass 7 is fiberglass available commercially from Certainteed Company under the trade designation, CT-M containing Glass 8 is fiberglass available commercially from Certainteed Company under the trade designation, CT-M containing Glass 9 is fiberglass available commercially from Certainteed Company under the trade desgination, CT-M containing Following the test procedure described in Example 2, the data set forth in Table III was obtained using different binder systems.

Following the test procedures of Example 2, the data set forth in Table IV was obtained with two different glass fiber reinforcement materials and two binder systems. Glass reinforced test panels were prepared as above and tested over a three month period in accordance with the test procedure of ASTM-C The test results are reported in Table V.

The strengths which the castings possessed were determined by making a so-called "biscuit" or briquette, that is, a formation shaped in a characteristic way a "dog bone" shape and bonded by the binder being tested.

After the so-called biscuit was formed, it was placed in a machine adapted to determine what the tensile and ultimate yield strengths of the part thus formed were. The shape of a typical briquette or biscuit is well known to those skilled in the art and accordingly, the characteristics thereof are not discussed further herein; for example, however, reference is made to such typical biscuit in a book entitled Steel Foundry Practice, by J.

Hall, Penton Publishing Co. The flex tests were conducted in accordance with procedure ASTM D and the strength test results are shown below:. In fabricating composite articles, a silane glass or silica or other adhesion promoter can be used with binders of this invention in an amount ranging from about 0.

Binder compositions in accordance with this invention are particularly advantageous for fabrication of fibrous reinforced articles which in use are exposed to corrosive conditions. However, as shown heretofore, the binders impart excellent strength characteristics and can be used advantageously as binders in the manufacture of pressure molded medium or high density composite articles such as particle board, wafer board, oriented fiber board, matboard, hardboard, pressboard, fiberglass board, etc.

Various methods of manufacturing the pressure molded high density composite articles and non-molded low density composites are known in the art using as matrix-forming materials a resinous binder and glass fiber, woody particles such as sawdust, bark, shavings and chips as well as other fibrous lignocellulosic materials such as straw, bagasse, corn stalks, cork and the like.

The binder compositions of this invention can be used in accordance with the known manufacturing procedures. Those modifications and equivalents which fall within the spirit of the invention are to be considered a part thereof.

Effective date : In the fabrication of composite articles, a binder containing hydroxymethylfurfural is employed. EXAMPLE 1 In obtaining all of the data set forth in the examples, except as hereinafter specified, reinforced glass laminate articles were made from five glass layers, that is, two 10 mil "C" glass chemical resistant surfacing veils at opposite faces and three chopped strand mat layers in between.

These reinforced glass laminates were prepared as follows: Mylar polyester film was supported on a smooth metal surface which serves as the shaping surface. The results of a 1 year corrosion study are shown in Table I. BlisterB 1 mo. Blisters 6 mo. Blisters 1 yr. S Side 3 mo. S Side 6 mo. R Side 1 yr. Sodium Chloride Temp. Fiber Bloom 1 yr.

Edge Cracking 3 mo. Fiber Bloom 3 mo. Fiber Bloom, Edge Cracking 6 mo. Fiber Bloom, Edge Cracking 1 yr. Fiber Bloom 6 mo. Fiber BloomB 1 mo. Edge Cracking 1 yr.

What codes are similar to this classification that might be a more applicable code? The cross-reference guide below displays the codes for other similar industries.

The present invention forms a reinforced boat hull structure by placing reinforcing materials inside a hull mold and forming same to the hull shape by locally applied vacuum ports. While vacuum continues to be applied a fiberglass matting and resin mixture is applied to the inner surface of the reinforcing material and hull mold, bonding the fiberglass mixture to the reinforcing material by curing, thereby obtaining a reinforced hull structure. Conventional fiberglass hull construction is obtained by providing a mold, laying fiberglass matting and bonding compound inside the mold to form the exterior shape of the hull, placing a vacuum bag over the mold inner space, evacuating the air inside the mold interior under the bag so as to cause the bag to collapse against the freshly applied fiberglass mixture and thus forcing it against the mold inner surface. The vacuum, hence pressure for hull forming, cannot be applied until the entire fiberglass matting and bonding compound is applied over all the mold form and access to the matting-compound mixture is denied while the vacuum bag is in place and vacuum applied. Installing reinforcing materials or adjusting the matting-compound mixture is not possible while the vacuum is present. Moreover, attaching reinforcing materials, as ultra high molecular weight polyethylene UHMW to the exterior surface of the hull is currently accomplished by the use of mechanical fasteners, screws, etc.

US4474636A - Fabrication of composite articles - Google Patents

Thermal insulation in modern industry plays an important role. With its help resolve issues of life support, the organization process, energy saving. Thermal insulation design are an integral part of the protective elements of industrial equipment, pipes, parts of industrial buildings. Due to its isolation is greatly improved reliability, durability and efficiency of buildings, structures and equipment. Insulation performs the following functions: reduces heat loss to the environment from facilities buildings, structures, equipment, piping, etc.

US3720540A - Production of glass fiber-reinforced plastic articles - Google Patents

Abstract Glass fiber reinforced plastic rebar GFRP-rebar is widely used in the modern construction industry. The analysis of the manufacturing methods showed that the epoxy adhesive impregnation unit is imperfect. The impregnation is carried out by immersion of filaments in a pastepot or bending them around a rotary spool. After that, the devices are used to remove excess adhesive and guide rollers and form the rebar roving. The parts contacting with adhesive must be regularly cleaned.

May 14, H.

Reinforcing glass fibers are embedded in the thermosetting coating which is cured to form the resultant reinforced plastic article. The coating and the reinforcing glass fibers are preferably applied using a spray-up system, i. Field of the Invention This invention relates to improvements in or relating to the production of glass fiber-reinforced plastic articles. Summary of the Prior Art Thermoplastics may be softened by heating and set or hardened again by cooling without undergoing a chemical change; this physical change is reversible, i. Thermoplastics may, therefore, be molded like wax or metal by heating, shaping in a mold, and then cooling. Acrylics, such as poly methyl methacrylate , are typical thermoplastics. The heat resistance and structural strength of thermoplastic materials, however, are often low for many applications; but in combination with certain reinforcing materials such as thermosetting plastic coatings, their heat resistance and structural strength are significantly improved.

US4474636A - Fabrication of composite articles - Google Patents

The present application is a continuation-in-part of U. The present invention relates to fiber reinforced resin matrix composites, and more particularly, to an fiber reinforced composite spar for a rotary wing aircraft having enhanced structural properties, a method for facilitating the manufacture thereof and a spar forming apparatus useful in fabricating the composite spar. Typically, a leading edge sheath and trailing edge pocket assembly mount to and envelop the spar thereby yielding the desired airfoil contour. The spar typically extends the full length of the rotor blade and mounts at its inboard end to a cuff assembly or fitting which facilitates mounting to the hub member.

The present invention relates to the field of fabricated materials for building construction. More precisely, the invention concerns a masonry block suitable for residential and building construction.

This is a division of application Ser. This invention relates to a process for altering the chemical or physical properties of a resin during production of a reinforced resin part by applying a treated veil to the resin thereby affecting the resin in the proximity of the treated veil during a production process. More particularly, this invention relates to a process for reducing the pulling force necessary to draw material through a mold during fabrication of a reinforced resin article, and to a process for improving the durability of a reinforced resin article when exposed to ultraviolet UV light. This invention also relates to the treated veil and to reinforced resin parts made with the treated veil. Fiber reinforced plastic FRP structural parts have been successfully used in various applications where the part is subjected to corrosive decay, decomposition, rust, and degradation, such as in chemical plants, paper mills, and plating facilities. These FRP parts are used to replace conventional parts made of, e. FRP parts or articles can be made by a number of processes, including, but not limited to, the following processes. Pultrusion is a process for fabricating a reinforced resin product, such as a fiber reinforced plastic FRP article. It involves taking various forms of fiber reinforcements mats, woven products, continuous rovings, etc. Normally, a polyester resin is used, but it can also be epoxy, phenolic or other resins. These saturated reinforcements are then pulled through a heated, matched metal die or mold machined to the shape of the desired finished part.

Conventional fiberglass hull construction is obtained by providing a mold, laying and an upper surface thereof facing the mold cavity; applying vacuum to said .. Systems and methods for fabricating composite fiberglass laminate articles.

Sergei Duzikh

The present invention relates generally to arc-quenching compositions and articles formed therefrom and more particularly to a fuse tube construction which is easily manufactured utilizing inexpensive materials and that exhibits excellent strength and arc-quenching properties for operation over a wide range of currents. Fuse tubes for medium and high-voltage electrical fuses wherein circuit interruption takes place within the fuse tube requires high strength and arc-quenching properties. Examples of prior art fuse tubes are found in U. Fuse tubes for operation to interrupt currents over a wide range, e. In conventional fuse cutouts utilized in electrical power distribution systems, the fuse tube is fabricated by winding a filament-wound glass-epoxy outer tube over an inner tube of vulcanized fiber that provides the arc-quenching properties. Various alternatives have been proposed to fabricate fuse tubes with overall high strength and a bore of suitable arc-quenching properties. Some of these alternatives include various fabrication techniques utilizing fiber supported in epoxy resin mixtures to provide an inner layer having arc-quenching properties over which is formed an outer layer providing strength. In the aforementioned U. While the prior art arrangements may be generally useful to provide fuse tubes for electrical fuses, the prior arrangements involve either relatively expensive natural resources or complex processing and fabrication.

US20040222562A1 - Rapid thermoform pressure forming process and apparatus - Google Patents

This invention generally relates to reflecting antennas for electromagnetic radiation and, more particularly, to reflecting antennas fabricated from fiberglass materials. The most common type of electromagnetic reflecting antenna in use today is the spun aluminum dish. The spun aluminum dish is constructed from a disk-shaped, aluminum sheet that is pressed into a hollow shape or mold. The dish is formed by pressing an aluminum sheet against a rotating form or spinning chuck. Although aluminum dish antennas are widely used today, these antennas have the problem of being subject to distortion and warpage. The aluminum is cold worked during the spinning process and therefore will distort if not handled carefully.

NAICS Code 327993 – Mineral Wool Manufacturing

Han fer Edward Hunter, Edward L.

US6777043B2 - Fuse tube and method of manufacture thereof - Google Patents

In one embodiment, the metal-coated sheet material is impregnated with a resin. According to embodiments of the invention, a metal is applied to one or two sides of the fabric or veil by a physical vapor deposition coating process. Materials used in the fabrication of component parts in the aerospace industry must have certain characteristics to protect the parts from damage or hazards caused by common environmental occurrences.

This is a division of application Ser. This invention relates to novel binder compositions useful in the fabrication of composite articles such as fiber reinforced composite articles. Fiber reinforced articles such as glass fiber reinforced furfuryl alcohol resin articles are well known as being particularly desirable for use as vessels, containers and other articles used in systems requiring a high degree of chemical resistance, high strength, structural stability and so forth. Various methods have been used in the fabrication of fiber reinforced articles, including, for example, "hand layup" fabrication and "spray-up" fabrication, as well as others.

A structural panel of the type mentioned above is known from the German Utility Pat. DE-GM 78 06 The fabric layer is reinforced on the inside by a woven fiberglass fabric or arrangement, and the fabric layer thereby exhibits anisotropic strength properties which are transferred to the overall structural panel. Due to the method of manufacture, the dimensional stability of structural panels of the type shown in the German Patent is largely based on the fact that the envelope or enclosure used can be trimmed off precisely along a predetermined line.

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  1. Brakazahn

    Matchless topic

  2. Malazuru

    On your place I would address for the help to a moderator.

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