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Powder binder for glass fiber chopped strand mat and preparation method thereof

A technology of chopped strand mat and powder binder, applied in the direction of adhesive, etc., can solve the problems of complicated process and harsh reaction requirements, and achieve the effects of good transparency, prevention of crystallization and reduction of symmetry

Active Publication Date: 2012-06-20
CHANGZHOU TIANMA GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is cumbersome and requires harsh reactions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0017] The powder binder for the glass fiber chopped strand mat of the present embodiment is made of the following components:

[0018] 110.2g of fumaric acid (0.95mol), 157.7g of isophthalic acid (0.95mol), 14g of trimesic acid (0.067mol), 360g of bisphenol A polyoxyethylene ether with an average added mole number of 3 (1mol) and 240g of hydrogenated bisphenol A (1mol).

[0019] The preparation method of this powder binder has the following steps:

[0020] ①Put 360g of bisphenol A polyoxyethylene ether (1mol) with an average addition mole number of 3, 240g of hydrogenated bisphenol A (0.98mol) and 157.7g of isophthalic acid (0.95mol) into the reactor, and then Slowly raise the temperature to 160°C, pass nitrogen gas under stirring, continue to slowly raise the temperature to 210°C for reaction, the reaction system becomes uniform and transparent, and then keep the temperature to continue the reaction until the acid value of the reaction system is less than 30mgKOH / g to stop ...

Embodiment 2～ Embodiment 4）

[0025] The preparation method of each embodiment 1 is the same as that of embodiment 1, and the differences are shown in Table 1.

[0026] Table 1

[0027] Example 1 Example 2 Example 3 Example 4 fumaric acid 110.2g (0.95mol) 110.2g (0.95mol) 110.2g (0.95mol) 110.2g (0.95mol) Saturated dibasic acid or its anhydride Isophthalic acid 157.7g (0.95mol) Isophthalic acid 74.7g (0.45mol) Isophthalic acid 132. 8g (0.80mol) Phthalic anhydride 140.6g (0.95mol) Saturated tribasic acid or its anhydride Trimellitic acid 14g (0.067mol) Trimellitic anhydride 12.8g (0.067mol) Trimellitic anhydride 12.8g (0.067mol) Trimellitic anhydride 12.8g (0.067mol) Bisphenol A polyoxyethylene ether 360g (1mol) 360g (1mol) 360g (1mol) 360g (1mol) another diol Hydrogenated bisphenol A240g (1mol) Neopentyl glycol 52g (0.5mol) Bisphenol A polyoxypropylene ether 275g (0.8mol) Bisphenol A polyoxypropylene ether 344g (1mol)

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Abstract

The invention discloses a powder binder for a glass fiber chopped strand mat and a preparation method thereof. The powder binder is prepared from acid and alcohol according to a molar ratio of 1:0.95 to 1:1.05. The acid consists of fumaric acid, saturated dicarboxylic acid or acid anhydride of the saturated dicarboxylic acid and saturated tribasic acid or acid anhydride of the saturated tribasic acid according to the molar percentage of (40 percent to 94 percent):(5 percent to 50 percent):(1 percent to 10 percent); the saturated dicarboxylic acid or the acid anhydride of the saturated dicarboxylic acid is isophthalic acid or phthalic anhydride; the saturated tribasic acid or the acid anhydride of the saturated tribasic acid is trimesic acid or trimellitic anhydride; the dihydric alcohol consists of one of bisphenol A polyoxypropylene ether, hydrogenated bisphenol A and neopentyl glycol and bisphenol A polyoxyethylene ether according to the molar percentage of (5 percent to 50 percent):(50 percent to 95 percent); and the average addition molar number of the bisphenol A polyoxyethylene ether is 3. The powder binder disclosed by the invention not only can be fast dissolved inti vinyl benzene but also is good in transparency after being dissolved.

Description

technical field [0001] The invention relates to a binder and a preparation method thereof, in particular to a powder binder for glass fiber chopped strand mat and a preparation method thereof. Background technique [0002] In the selection of light-transmitting materials, glass is gradually replaced by transparent FRP due to its shortcomings such as weight, fragility, difficulty in processing into curved surfaces, and difficulty in making thin layers. The main raw material of transparent FRP is glass fiber chopped strand mat. [0003] Glass fiber chopped strand mat is a mat made of glass fiber strands (or roving) chopped into a certain length, randomly distributed evenly, and dried, cold pressed, and cooled by applying an appropriate binder. shaped products. Among them, the binder has a great influence on the intrinsic properties of the glass fiber chopped strand mat (including the strength, softness and permeability of the mat). Binders for glass fiber chopped strand mat...

Claims

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Application Information

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IPC IPC(8): C09J167/06C08G63/676
Inventor 曹鑫宣维栋杨春王海军王维东
Owner CHANGZHOU TIANMA GROUP CO LTD
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