Reinforced glass fiber impregnating agent for SMC and preparation method thereof
A glass fiber and sizing technology, which is applied in the field of reinforced glass fiber sizing for SMC, can solve the problem that the mechanical strength and mechanical properties cannot meet the requirements of high-performance SMC products, the resin mixture does not have good impregnation and fluidity, and the appearance of the product is not smooth enough To achieve the optimization of formula components, excellent chopping performance, and improvement of mechanical strength and mechanical properties
Inactive Publication Date: 2017-02-01
SHANDONG FIBERGLASS GRP
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a reinforced glass fiber sizing for SMC, which solves the problem that the glass fiber produced by the existing sizing has poor chopped performance, high static electricity, and has no good impregnation and fluidity for resin mixtures. ; The appearance of the product is not smooth enough, and the mechanical strength and mechanical properties cannot meet the problems of high-performance SMC products
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[0034] The technical scheme of the present invention will be further described below with specific examples, but protection scope of the present invention is not limited to this:
[0035] Referring to Table 1, in the following examples, coupling agent 1 is vinyl tris-(2-methoxyethoxy) silane, and coupling agent 2 is gamma-glycidyl propane trimethoxysilane, and the model is KH560; pH The conditioner is industrial grade glacial acetic acid, purchased from Jining Xuli Chemical Co., Ltd.; lubricant 1 is a cationic lubricant purchased from Kekai, the model is 6760L, and lubricant 2 is a nonionic lubricant purchased from Haian Petrochemical Plant in Jiangsu Province , model PEG200MO; polyurethane emulsion collected from Italy COIM, model FILCO322; epoxy resin emulsion collected from the Netherlands DSM company, model DSMJS129, amino-modified polyvinyl acetate emulsion collected from Frankin Company 682. The solid content of the wetting agent is controlled at 8.0-10.0%, the final pH ...
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The invention relates to a reinforced glass fiber impregnating agent for an SMC (sheet molding compound). The reinforced glass fiber impregnating agent comprises a silane coupling agent, a film-forming agent, a lubricating agent, an antistatic agent, a surfactant, a pH regulator and water, wherein the film-forming agent is a blend of a polyurethane emulsion, an amino-modified polyvinyl acetate emulsion and an epoxy resin emulsion; the lubricating agent is a mixture of a cationic lubricating agent and a non-ionic lubricating agent; the antistatic agent is an inorganic antistatic agent; the pH regulator is acid. The reinforced glass fiber impregnating agent for the SMC endows glass fiber with excellent choppability, better dispersion, less hairiness, low static electricity, a better impregnating effect in resin and better forming fluidity, and improves mechanical properties of an SMC product.
Description
technical field [0001] The invention relates to a glass fiber sizing agent, in particular to a reinforced glass fiber sizing agent for SMC. Background technique [0002] SMC is the abbreviation of sheet molding compound, that is, sheet molding compound. SMC molding technology is a closed-mold composite material processing technology that uses glass fiber as a reinforcing material. It has the advantages of convenient operation, high degree of automation, strong designability, precise product size, and good surface quality. It is widely used in bathrooms, Automotive, communication, electric power, rail transit and other fields. [0003] In our country today, SMC products are still mainly low-tech products, and the material performance, mold, and press precision parameters need to be improved, so that the product quality is mainly high-strength, light-weight, and high-precision surface. Nowadays, SMC products in the market are mainly water tank boards, electric meter boxes, s...
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IPC IPC(8): C03C25/42
CPCC03C25/28C03C25/326
Inventor 高贵恒傅理军李淑栋王雯雯
Owner SHANDONG FIBERGLASS GRP