Glass fiber engineering plastic yarn film forming agent and preparation method thereof

Abstract

The invention discloses a glass fiber engineering plastic yarn film forming agent and a preparation method thereof. The film forming agent is a copolymer formed by polymerizing diacetone acrylamide, acrylic monomers, methacrylic acid monomers, methyl methacrylate and butyl acrylate monomers. The preparation method comprises the steps that 1, 7-9 parts of the diacetone acrylamide, 7-9 parts of the acrylic monomers, 7-9 parts of the methacrylic acid monomers, 120-140 parts of the methyl methacrylate, 220-240 parts of the butyl acrylate monomers and 14-25 parts of emulsifying agents are mixed evenly to obtain pre-emulsified liquid; 2, an emulsion polymerization reaction is performed on pre-emulsified liquid accounting for 3-10% of the mass of the pre-emulsified liquid obtained in the step 1 and initiating agents to obtain latex particle seeds; 3, the surplus pre-emulsified liquid is dropwise added in the latex particle seeds to enable the latex particle seeds to be largened, the initiating agents are added to remove the residual monomers, and the glass fiber engineering plastic yarn film forming agent is prepared. The film forming agent can be matched with other auxiliaries to prepare a glass fiber soakage agent which is good in glass fiber bundling property, capable of resisting high temperature and yellowing, good in heat stability and high in composite property.

Description

technical field [0001] The invention belongs to the technical field of glass fiber film-forming agent manufacturing, and in particular relates to a glass fiber engineering plastic yarn film-forming agent and a preparation method thereof. Background technique [0002] As we all know, the key to the development of new varieties of glass fiber lies in the technology of sizing, and the important component of sizing is film-forming agent. In addition to protecting the fibers, the film-forming agent plays a key role in the stiffness, clustering, chopping, dispersibility, and penetrating properties of the glass fibers; the sizing not only makes the glass fibers and plastic substrates chemically The performance is better matched, and at the same time, the product value of glass fiber can be greatly improved. [0003] As a film-forming agent for glass fiber sizing, polyacrylate copolymer emulsion can endow glass fibers with better hardness, clustering, cutting, and antistatic proper...

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Problems solved by technology

[0003] As a film-forming agent for glass fiber sizing, polyacrylate copolymer emulsion can endow glass fibers with better hardness, clustering, cutting, and antistatic properties. However, most of the current domestic acrylate emulsions are anionic. The cationic lubricant and antistatic agent in the fiber sizing agent are not compatible, which seriously affects the stability of the sizing agent, thus directly affecting the quality of glass fiber engineering plastic yarn