Reinforced glass fiber impregnating compound as well as preparation method and application thereof

A technology of glass fiber and sizing agent, applied in the field of glass fiber sizing agent, can solve the problems of affecting the impregnating mechanical properties of products, poor similar compatibility, and unfavorable comprehensive performance of SMC products.

Inactive Publication Date: 2021-03-09
JUSHI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently common sizing agent used for external coating of glass fiber surface of SMC has much poorer compatibility with epoxy resin system,

Method used

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  • Reinforced glass fiber impregnating compound as well as preparation method and application thereof
  • Reinforced glass fiber impregnating compound as well as preparation method and application thereof
  • Reinforced glass fiber impregnating compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0060] The enhanced glass fiber wetting agent is prepared according to the formulation of Examples 1-10 in Table 1, and the preparation method thereof includes the following steps:

[0061] 1) When the first domer is added to the first container, water is added, and it is adjusted to acidity with a pH adjuster, and the first coupon is mixed, and the first coupon is mixed is uniform, and dispersed into clarification;

[0062] 2) The water corresponding to the second coupling agent mass 30 to 50 is added to the second container, and it is adjusted to acidity with a pH adjuster, and the second coupling agent is stirred, stir evenly disperse to clarify;

[0063] 3) Add 2 to 4 times the epoxy emulsion from 2 to 4 times, then add epoxy emulsion, stir to uniform dispersion;

[0064] 4) In the fourth container, the polyurethane emulsion is added to the polyurethane emulsion, and the polyurethane emulsion is added, stirred to uniform dispersion;

[0065] 5) Add a lubricant 4 to 6 times hot...

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Abstract

The invention provides a reinforced glass fiber impregnating compound which comprises the following components in percentage by mass: 0.1-2.0% of a coupling agent, 0.5-2.0% of a first film forming agent; 1.5-10.0% of a second film forming agent; 0.02-1.0% of a cross-linking agent; 0.01%-1.0% of a lubricating agent; 0.02-1.0% of a pH value adjusting agent; and 83.0-97.85% of water; the coupling agent is a silane coupling agent, and the coupling agent is a mixture of a first coupling agent and a second coupling agent; the first film-forming agent is a polyurethane emulsion; and the second film-forming agent is an epoxy emulsion. The compound provided by the invention not only can effectively improve the fluidity, impregnation performance and product surface performance of glass fibers, but also can improve the bundling performance and compatibility with resin, can be used in the production of epoxy resin SMC materials, and obviously improves the mechanical properties of the epoxy resin SMC materials.

Description

technical field [0001] The invention belongs to the technical field of glass fiber sizing, and in particular relates to a reinforced glass fiber sizing, its preparation, and its application in reinforced epoxy resin system SMC products. Background technique [0002] SMC (Sheet Molded Plastic) products have been widely used in the automobile industry, construction industry, etc. Industry and other industries have been more and more widely used. In the field of rail transportation technology, such as automobiles, high-speed rail, cruise ships, etc., there is a huge demand for SMC products. [0003] At present, SMC materials are mainly based on unsaturated polyester resin. However, this kind of unsaturated polyester resin SMC material generally has the disadvantages of strong odor and low strength, and it is more and more difficult to be suitable for rail transit interior parts. manufacturing requirements. Therefore, the SMC material based on epoxy resin has gradually become...

Claims

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Application Information

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IPC IPC(8): C03C25/465C03C25/40C03C25/326C03C25/36C08K9/06C08K9/04C08K7/14C08L63/00
CPCC03C25/465C03C25/40C03C25/326C03C25/36C08K9/06C08K9/08C08K7/14C08L63/00
Inventor 张志坚刘阳章建忠陆琦张鑫
Owner JUSHI GRP CO
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