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A kind of nano-reinforced modified polyester and preparation method thereof

A modified polyester and nano-reinforced technology, which is applied in the field of nano-reinforced modified polyester and its preparation, can solve problems such as poor temperature resistance and poor dimensional stability of polyester, and achieve excellent temperature resistance, excellent mechanical properties, and easy layered discoloration effect

Active Publication Date: 2021-11-26
苏州瀚海新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problems of poor dimensional stability and poor temperature resistance of polyester in the prior art by providing a nano-reinforced modified polyester, and realizes a modified polyester with strong dimensional stability, low shrinkage and strong temperature resistance Material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]This embodiment provides a nano-reinforced modified polyester in parts by weight, and its raw materials include: 40 parts of polybasic acid and its anhydride, 6 parts of monobasic acid, 52 parts of dihydric alcohol, 6 parts of nanofiller, to promote crosslinking 34 parts of agent, 0.2 part of polymerization inhibitor, 7 parts of liquid rubber.

[0039] The polybasic acid and its anhydride are terephthalic acid, C4-10 saturated dibasic acid and maleic anhydride; the weight ratio of terephthalic acid, C4-10 saturated dibasic acid and maleic anhydride is 3:2 :2.

[0040] The C4-10 saturated dibasic acid is adipic acid and dimethylmalonic acid, and the weight ratio of adipic acid and dimethylmalonic acid is 4:1.

[0041] The diols are 2-methyl-1,3-propanediol and diethylene glycol, and the weight ratio of 2-methyl-1,3-propanediol to diethylene glycol is 4:1.

[0042] The monobasic acid is dodecanoic acid with a CAS number of 143-07-7.

[0043] The liquid rubber is a carbo...

Embodiment 2

[0060] This embodiment provides a nano-reinforced modified polyester. In parts by weight, its raw materials include: 50 parts of polybasic acid and its anhydride, 9 parts of monobasic acid, 60 parts of dibasic alcohol, 10 parts of nanofiller, 42 parts of joint agent, 0.3 parts of polymerization inhibitor, 4 parts of liquid rubber.

[0061] The polybasic acid and its anhydride are terephthalic acid, C4-10 saturated dibasic acid and maleic anhydride; the weight ratio of terephthalic acid, C4-10 saturated dibasic acid and maleic anhydride is 3:2 :2.

[0062] The C4-10 saturated dibasic acid is adipic acid and dimethylmalonic acid, and the weight ratio of adipic acid and dimethylmalonic acid is 4:1.

[0063] The diols are 2-methyl-1,3-propanediol and diethylene glycol, and the weight ratio of 2-methyl-1,3-propanediol to diethylene glycol is 4:1.

[0064] The monobasic acid is dodecanoic acid with a CAS number of 143-07-7.

[0065] The liquid rubber is a carboxyl-terminated liqu...

Embodiment 3

[0082] This embodiment provides a nano-reinforced modified polyester. In parts by weight, its raw materials include: 40 parts of polybasic acid and its anhydride, 5 parts of monobasic acid, 52 parts of dibasic alcohol, 6 parts of nanofiller, 34 parts of joint agent, 0.2 parts of polymerization inhibitor, 7 parts of liquid rubber.

[0083] The polybasic acid and its anhydride are terephthalic acid, C4-10 saturated dibasic acid and maleic anhydride; the weight ratio of terephthalic acid, C4-10 saturated dibasic acid and maleic anhydride is 3:2 :2.

[0084] The C4-10 saturated dibasic acid is adipic acid and dimethylmalonic acid, and the weight ratio of adipic acid and dimethylmalonic acid is 4:1.

[0085] The diols are 2-methyl-1,3-propanediol and diethylene glycol, and the weight ratio of 2-methyl-1,3-propanediol to diethylene glycol is 4:1.

[0086] The monobasic acid is stearic acid with a CAS number of 57-11-4.

[0087] The liquid rubber is a carboxyl-terminated liquid ru...

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Abstract

The invention relates to the technical field of organic polymer compounds, in particular to a nano-reinforced modified polyester and a preparation method thereof. In parts by weight, the raw materials include: 20-54 parts of polybasic acid and its anhydride, 28-62 parts of dihydric alcohol, 4-10 parts of monobasic acid, 0.1-10 parts of nanofiller, and 16-45 parts of crosslinking accelerator , 0.01-3 parts of polymerization inhibitor, 2-10 parts of liquid rubber. The invention provides a nano-reinforced modified polyester. By selecting polyester monomers and modifying nano-materials, a composite polyester material with excellent mechanical properties and temperature resistance is obtained; Limitations of ester performance enhancement. The obtained composite material has high mechanical strength, can still maintain high impact strength after cold and heat cycles, and is not easy to delaminate and change color. It also has the advantages of anti-static adsorption and corrosion-resistant aging, especially suitable for electronic or biological materials. .

Description

technical field [0001] The invention relates to the technical field of organic polymer compounds, in particular to a nano-reinforced modified polyester and a preparation method thereof. Background technique [0002] Since polyethylene terephthalate was first synthesized in the 1940s, polyester materials have been rapidly applied to products such as fibers, coatings, films, glass fiber reinforced plastics, and adhesives, and have become popular in electronics, machinery, food packaging, light industry, etc. Indispensable raw materials in the field. Chinese patent CN201810759940.7 discloses a preparation method of toughened and anti-aging unsaturated polyester resin, which uses acrylate and epoxy soybean oil to react to form a network interpenetrating crosslinking structure, and adds silica sol carbon nanotubes to suspend liquid, etc., so that the material exhibits better bonding strength and oxidation resistance; Chinese patent CN201610134489.0 discloses a preparation method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/06C08L13/00C08K3/04C08K3/34C08K9/02
CPCC08L67/06C08K2201/011C08L13/00C08K3/041C08K3/346C08K9/02
Inventor 黄志远童军
Owner 苏州瀚海新材料有限公司