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A kind of preparation method of mesoporous graphene oxide/unsaturated polyester resin

A polyester resin and graphene technology, which is applied in the field of mesoporous-graphene oxide/unsaturated polyester resin preparation, can solve the problem of limited filling and modification effect of nanomaterials, reducing heat resistance and rigidity, and being easy to grind out glass. Fiber debris and other problems, to achieve the effect of good molding and curing process, excellent wear resistance, good hydrothermal stability

Active Publication Date: 2018-04-10
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many reports on the high-performance research of unsaturated polyester, especially the modification research on strengthening, toughening and heat resistance at home and abroad. or toughness resin, etc.) blending compound modification, or introduce flexible units into the unsaturated polyester molecular chain structure through copolymerization, grafting, etc. to improve its impact toughness and crack resistance. This method has obvious toughening effect, but usually reduces heat resistance and rigidity
The second is to improve the strength of unsaturated polyester composite materials through fiber reinforcement. Glass fiber / unsaturated polyester composite materials have good heat resistance and mechanical strength, but their wear resistance is poor, and glass fiber debris is easy to grind out. , will also accelerate the wear of adjacent parts
However, the main problems are the interfacial compatibility between inorganic nanomaterials and the matrix resin and their dispersion in the matrix resin, and the second is that the filling and modification effect of a single nanomaterial is also limited, making it difficult to achieve comprehensive high performance of the composite material. requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) 1000 grams of ethylene glycol, 50 grams of SBA-15 mesoporous powder, 50 grams of graphite oxide powder and 10 grams of KH570 silane coupling agent were added to a stainless steel ball mill and ball milled for 4 hours to obtain a uniformly dispersed powder Mix the solution, and control the particle size of the powder in the mixed solution to be less than 1.5 microns; then heat the mixed solution to 120° C., stir for 3 hours, then cool, filter, dry, and grind to obtain a mesoporous-graphene oxide hybrid powder.

[0015] (2) 930 grams of ethylene glycol, 450 grams of butanediol and 47 grams of the mesoporous-graphene oxide hybrid powder obtained in step (1) are added to the reactor, and 4 is added after ultrasonic dispersion for 1 hour. 1,290 grams of 4'-diphenyl ether dicarboxylic acid, 1,740 grams of fumaric acid, and 15 grams of antimony oxide catalyst were started to stir and heated to make the materials polymerized at 180-230°C.

[0016] (3) After the acid value o...

Embodiment 2

[0019] The addition amount of bisphenol A diisocyanate chain extender was changed from 278 grams to 139 grams, and the ratio and process of the remaining raw materials were the same as in Example 1 to obtain another mesoporous- Graphene oxide / unsaturated polyester resin.

[0020] The technical indicators of the mesoporous-graphene oxide / unsaturated polyester resin prepared in this example: ①The content of mesoporous-graphene oxide powder is 1%; ②Acid value≤12 mgKOH / g; ③Maximum curing exotherm Temperature ≥ 200°C; ④ Curing time (160°C) ≤ 70s; ⑤ Softening temperature ≥ 95°C; ⑥ Thermal weight loss temperature (5%) ≥ 390°C; ⑦ Volume wear rate (160°C) ≤ 0.4×10 -8 cm 3 / N·m.

Embodiment 3

[0022] The addition amount of the mesoporous-graphene oxide hybrid powder is changed from 47 grams to 94 grams, and the ratio and process of the remaining raw materials are the same as in Example 1, and another mesoporous-graphene oxide hybrid powder with better heat resistance and wear resistance is obtained. Graphene oxide / unsaturated polyester resin.

[0023] The technical indicators of the mesoporous-graphene oxide / unsaturated polyester resin prepared in this example: ①The content of mesoporous-graphene oxide powder is 2%; ②Acid value≤8 mgKOH / g; ③Maximum curing exotherm Temperature ≥ 200°C; ④ Curing time (160°C) ≤ 55s; ⑤ Softening temperature ≥ 115°C; ⑥ Thermal weight loss temperature (5%) ≥ 430°C; ⑦ Volume wear rate (160°C) ≤ 0.1×10 -8 cm 3 / N·m.

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Abstract

The invention discloses a preparation method of mesoporous graphene oxide / unsaturated polyester resin. Using the heat-resistant monomer 4,4'-diphenyl ether dicarboxylic acid and bisphenol A diisocyanate with ether group structure, the resin molecular chain has better heat resistance, molding processability and controllability of production process. At the same time, using mesoporous materials and graphite oxide materials, mesoporous-graphene oxide hybrid powders are formed by ball milling and coupling treatment, and then ultrasonically dispersed and in-situ polymerized to effectively disperse the hybrid powders to unsaturated In the polyester matrix resin, the interfacial compatibility and bonding strength between the unsaturated polyester and the mesoporous-graphite oxide hybrid powder are improved. The advantages of the present invention are that the preparation process is simple and controllable, the amount of powder is small, the resin has good heat resistance, wear resistance and insulation, the forming and curing process is good, the thermal strength of the cured product is high, and the dimensional accuracy and performance are stable. It has good performance and can be used as matrix resin for composite materials with high performance requirements.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, in particular to a preparation method of mesoporous-graphene oxide / unsaturated polyester resin. Background technique [0002] At present, there are many reports on the high-performance research of unsaturated polyester, especially the modification research on strengthening, toughening and heat resistance at home and abroad. or toughness resin, etc.) blending compound modification, or introduce flexible units into the unsaturated polyester molecular chain structure through copolymerization, grafting, etc. to improve its impact toughness and crack resistance. This method has obvious toughening effect, but usually reduces Heat resistance and rigidity. The second is to improve the strength of unsaturated polyester composite materials through fiber reinforcement. Glass fiber / unsaturated polyester composite materials have good heat resistance and mechanical strength, but their wear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/14C08K7/24C08K3/04C08G18/76C08G18/68C08G63/676C08G63/78
Inventor 韦春吕建刘庆刘华山徐旭
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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