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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

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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, thus affecting the impregnation and mechanical properties of the product, which is extremely unfavorable to the comprehensive performance of SMC products

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

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preparation example Construction

[0060] According to the prescription of embodiment 1-10 in table 1, strengthened glass fiber sizing is prepared, and its preparation method comprises the steps::

[0061] 1) Add water 30 to 50 times the mass of the first coupling agent in the first container, adjust it to acidity with a pH adjuster, stir and add the first coupling agent until the mixture is uniform, and disperse until clarification;

[0062] 2) Add water equivalent to the mass of the second coupling agent of 30 to 50 in the second container, adjust it to acidity with a pH regulator, add the second coupling agent with stirring, and disperse evenly until clarification;

[0063] 3) Add 2 to 4 times the normal temperature water of the epoxy emulsion into the third container, then add the epoxy emulsion, and stir until evenly dispersed;

[0064] 4) Add 2 to 4 times the normal temperature water of the polyurethane emulsion into the fourth container, then add the polyurethane emulsion, and stir until evenly dispersed...

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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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