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Glass fiber impregnating compound high in permeating speed and application thereof in producing twistless roving

A sizing and lubricant technology, applied in the direction of yarn, textiles and paper making, can solve the problems of poor bonding between white silk, glass fiber and resin, affecting the appearance and strength of FRP products, etc., and achieve the effect of fast soaking speed

Active Publication Date: 2016-08-03
JUSHI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor penetration will lead to white silk phenomenon, and the bonding between glass fiber and resin is not good, which will affect the appearance and strength of FRP products

Method used

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  • Glass fiber impregnating compound high in permeating speed and application thereof in producing twistless roving
  • Glass fiber impregnating compound high in permeating speed and application thereof in producing twistless roving
  • Glass fiber impregnating compound high in permeating speed and application thereof in producing twistless roving

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Embodiment Construction

[0051] 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:

[0052] See Table 1. In these examples, in order to meet the requirements that the glass fiber can be quickly soaked by the matrix resin, improve the chopping property, and improve the production efficiency, we use nano-silica-modified polyester emulsion and (denoted as emulsion film-forming agent A ) and homopolymeric PVAc (referred to as emulsion film former B) and polyurethane modified epoxy resin emulsion (referred to as emulsion film former C) mixed as film former. Emulsion film-forming agent A is a polyester emulsion modified by nano-silica, which uses JS-131 raw material from COIM Company, which is about 0.5% to 3% polyester emulsion modified by nano-silica, Tg The particle size of the emulsion is between 0.3 and 0.8 microns between 4 and 30°C, it can quickly dissolve styrene, the Tg is betwee...

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Abstract

The invention discloses a glass fiber impregnating compound which is prepared from, by weight, 0.02-3.00% of a coupling agent, 3.00-30.00% of a film forming agent, 0.02-2.00% of a lubricating agent, 0.02-0.80% of an antistatic agent, 0.01-2.00% of a pH adjusting agent and deionized water. The film forming agent is prepared by mixing nanosilicon dioxide modified polyester emulsion, PVAc emulsion and polyurethane modified epoxy emulsion, and the content of the nanosilicon dioxide modified polyester emulsion is not smaller than that of the polyurethane modified epoxy emulsion. The invention further provides application of the glass fiber impregnating compound in producing twistless roving. The twistless roving produced through the impregnating compound is high in permeating speed, good in choppability, good in production smoothness and good in compatibility with enhanced resin, production efficiency and the mechanical strength of a produced composite product are greatly improved, and the glass fiber impregnating compound is applicable to an injection process or a centrifugal casting molding process.

Description

(1) Technical field [0001] The present invention relates to a glass fiber sizing agent and its application in the production of roving, especially a glass fiber sizing agent and its reinforced unsaturated polyester, vinyl, etc. Application of rovings of resin or epoxy resin. (2) Background technology [0002] Jet yarn molding and centrifugal casting molding production processes occupy a certain proportion in FRP molding. With the increase of labor costs, it is more and more important to improve production efficiency. The penetration speed of glass fiber is a very important factor affecting the forming efficiency of FRP. Poor penetration will lead to white silk phenomenon, and the bonding between glass fiber and resin is not good, which will affect the appearance and strength of FRP products. Therefore, increasing the penetration speed of glass fiber and reducing the number of rolling times can reduce the phenomenon of poor penetration of glass fiber, improve the bonding be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/42D02G3/26
CPCC03C25/42D02G3/26
Inventor 叶凤林曹国荣顾桂江周红娅
Owner JUSHI GRP CO
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