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A kind of sizing agent for high-speed injection molding glass fiber and its preparation method and application

A technology of glass fiber and high-speed spraying, which is applied in the field of glass fiber sizing, which can solve the problems of glass fiber surface roughness, poor smoothness of use, and insufficient smoothness of the surface, etc., to achieve fast soaking speed, fast spraying speed, and good moldability Effect

Active Publication Date: 2022-02-01
JUSHI GRP CO
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The formula of glass fiber sizing for conventional spraying is mainly based on polyvinyl acetate emulsion, adding a certain amount of epoxy emulsion and polyester emulsion as a film-forming agent, and the appropriate proportion can be obtained by adjusting the ratio of different film-forming agents. However, the surface of the glass fiber produced in this way is rough, indicating that the smoothness is not enough, the tape formation is not good, and the smoothness of use is poor, which affects the speed of the injection molding production process and cannot be used as a high-speed fiberglass. Spray Yarn

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  • A kind of sizing agent for high-speed injection molding glass fiber and its preparation method and application
  • A kind of sizing agent for high-speed injection molding glass fiber and its preparation method and application
  • A kind of sizing agent for high-speed injection molding glass fiber and its preparation method and application

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Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than Full examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0056] The specific formulations of the examples of the sizing agent for high-speed spray-molded glass fibers of the present invention are shown in Table 1, and the specific formulations of the corresponding comparative examples are also reco...

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Abstract

The invention relates to a sizing agent for high-speed spray-molded glass fiber and its preparation method and application. The sizing agent for high-speed spray-molded glass fiber comprises the following components, and the content of each component is expressed in weight percentage as follows: silane coupling agent 0.20~ 1.80%; film-forming agent 5.00-28.00%; plasticizer 0.01-1.00%; lubricant 0.05-2.50%; antistatic agent 0.01-2.00%; pH regulator 0.02-2.00%; and water 67.00-95%; Wherein, the film forming agent is composed of unsaturated polyester emulsion, epoxy emulsion and polyurethane emulsion. The use of the sizing agent of the present invention to produce glass fibers can effectively increase the spraying speed of glass fibers during use, accelerate the soaking speed of glass fibers, improve the banding of glass fibers, and reduce the rolling time of the spraying process, which is very beneficial to industrial production. usage of.

Description

technical field [0001] The invention relates to the technical field of a glass fiber sizing agent, in particular to a sizing agent for high-speed spray-molded glass fibers and a preparation method and application thereof. Background technique [0002] Spray yarn forming occupies a certain proportion in FRP forming. With the improvement of environmental protection and labor costs, it is more and more important to improve production efficiency in the production process. The injection speed is a very important factor affecting the forming efficiency of FRP. The improvement of the injection speed requires the glass fiber to have very good process properties, such as excellent strip forming and molding properties, and good exhaust performance. [0003] The formula of glass fiber sizing for conventional spraying is mainly based on polyvinyl acetate emulsion, adding a certain amount of epoxy emulsion and polyester emulsion as a film-forming agent, and the appropriate proportion can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C25/465
CPCC03C25/465
Inventor 叶凤林章建忠周红娅刘阳
Owner JUSHI GRP CO
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