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Powder binding agent for glass fiber felt

A technology of powder binder and glass fiber mat, which is applied in the direction of textiles, papermaking, non-woven fabrics, etc., to achieve stable quality, increase branched chain structure, and improve strength

Active Publication Date: 2015-04-22
JUSHI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In summary, there is currently a lack of a powder binder for mats that can quickly dissolve in styrene and improve the tensile strength of glass fiber mats

Method used

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  • Powder binding agent for glass fiber felt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put 74.1 g (0.5 mol) of phthalic anhydride, 38.1 g (0.5 mol) of propylene glycol, 157.6 g (0.4 mol) of propylene oxide adduct of bisphenol A, and 24.1 g of trimethylolethane into a four-necked flask. g (0.15mol), heat up to 180°C, react under nitrogen protection for 3h, slowly raise the temperature to 200°C and continue the reaction until the acid value drops below 20mg KOH / g. Then cool down to 150°C, add 49.1g (0.5mol) of maleic anhydride, slowly raise the temperature to 200°C, and measure its acid value to be less than 20mg KOH / g, add 2g of polyvinyl alcohol (model: polyvinyl alcohol 1799), stir well and pour After cooling, the product is crushed into powder after cooling to obtain a powder binder for glass fiber mat. Sprinkle the powder manually twice with 3% addition (that is, manually sprinkle the powder binder on the chopped glass fiber to make a felt, and the weight of the powdered binder accounted for 3% of the weight of the chopped glass fiber), set Bake at 18...

Embodiment 2-5

[0038] The operation method of each embodiment is identical with embodiment 1, and the difference of formula is shown in Table 1:

[0039] Table 1

[0040]

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PUM

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Abstract

The invention discloses a powder binding agent for glass fiber felt, which comprises polyester prepared by polycondensing the following three components: (1) component A: the component A is saturated acid and / or saturated acid anhydride, wherein the saturated acid is m-phthalic acid, and the saturated acid anhydride is phthalic anhydride; (2) component B: the component B is unsaturated acid and / or unsaturated acid anhydride, wherein the unsaturated acid anhydride is maleic anhydride, and the unsaturated acid is one or mixture of fumaric acid and itaconic acid; and (3) component C: the component C is a mixture of dibasic alcohol and tribasic alcohol, wherein the dibasic alcohol is a mixture of more than two of 0-75 mol% of bisphenol A addition product of epoxypropane or epoxyethane, 0-75 mol% of propanediol and 0-75 mol% of neopentyl glycol, and the tribasic alcohol is trimethylolethane or trimethylolpropane. The powder binding agent for glass fiber felt can be quickly dissolved in styrene, and can enhance the tensile strength of the glass fiber felt.

Description

(1) Technical field [0001] The invention relates to a powder binder for glass fiber felt. (2) Background technology [0002] Glass fiber reinforced composite material (hereinafter referred to as FRP) is a kind of composite material with excellent performance, which has good electrical, mechanical, chemical resistance and aging resistance, and is widely used in automobiles, machinery, aerospace, chemical industry, petroleum and other fields. [0003] Some fields with high quality requirements, such as the automotive industry for automotive intake pipes, engine covers, bumpers, panels and other FRP products must have high impact strength. In addition, in the FRP molding process, the resin is rapidly cured at high temperature, and the glass fiber is required to be soaked quickly before the resin is cured. From the perspective of economic benefits, it can shorten the molding cycle, reduce the number of molds and shorten the operating space, so the penetration speed is also an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/587D04H1/4218C08G63/676C08G63/52
Inventor 刘金花李耀宗万继鑫
Owner JUSHI GRP CO
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