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Sheet moulding compound (SMC) or sheet moulding composite is a ready to mould glass-fibre reinforced polyester material primarily used in compression moulding. [1] The sheet is provided in rolls weighing up to 1000 kg. Alternatively the resin and related materials may be mixed on site when a producer wants greater control over the chemistry and ...
Unsaturated polyester resins are used in sheet moulding compound, bulk moulding compound and the toner of laser printers. Wall panels fabricated from polyester resins reinforced with fiberglass—so-called fiberglass reinforced plastic (FRP)—are typically used in restaurants, kitchens, restrooms and other areas that require washable low
The mixing is done at room temperature and stored at low temperatures to slow down curing prior to molding. The concentration of the mixture can vary depending on application, but is typically 30% glass fibers, 25% filler, and 45% resin, styrene, and initiator. [2] The material is provided in bulk or in logs approximately 4" in diameter.
A suitable resin for combining the fiberglass with a plastic to produce a composite material was developed in 1936 by DuPont. The first ancestor of modern polyester resins is Cyanamid's resin of 1942. Peroxide curing systems were used by then. [6] With the combination of fiberglass and resin the gas content of the material was replaced by plastic.
Owens Corning is an American company that develops and produces insulation, roofing, and fiberglass composites and related products. It is the world's largest manufacturer of fiberglass composites. [3] [4] It was formed in 1935 as a partnership between two major American glassworks, Corning Glass Works and Owens-Illinois. The company employs ...
Huntsman Corporation is an American multinational manufacturer and marketer of chemical products for consumers and industrial customers. Huntsman manufactures assorted polyurethanes, performance products, and adhesives for customers like BMW, GE, Chevron, Procter & Gamble, Unilever and Walkaroo.
The most common resin system used for the spray-up process is general purpose or DCDP polyester; isophthalic polyesters and vinyl ester resins are also sometimes used. Fast-reacting resins with a pot life of 30 to 40 minutes are typical. The resin often contains a significant amount of filler.
Combining Polipol polyester resins and Polives vinyl ester resin as well as gelcoat products, composite performance materials provide products for the construction, transport, marine, defense, wind energy, sports equipment, chemical containment industries. The main manufacturing plant is located in Southeastern Europe, Cerkezkoy-Turkey.
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