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A kind of polyester elastomer composition

A technology of polyester elastomer and composition, which is applied in the field of polyester elastomer composition, can solve problems not related to the improvement of electrical insulation of polyester elastomer, achieve good hydrolysis resistance, processing stability, and good water resistance Degradability, the effect of improving hydrolysis resistance

Active Publication Date: 2017-11-17
SHANGHAI YITAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen that in the prior art, polycarbodiimide is mainly used as an anti-hydrolysis agent to improve the hydrolysis resistance of polyester elastomers, and does not involve its improvement in the electrical insulation of polyester elastomers.

Method used

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  • A kind of polyester elastomer composition
  • A kind of polyester elastomer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of polyester elastomer composition, component comprises:

[0049] 100 parts by weight of polyester elastomer;

[0050] 1 part by weight of ethylene-ethyl acetate copolymer;

[0051] 0.01 parts by weight of polycarbodioxide;

[0052] The polycarbodiidene compound is polyhexamethylenecarbodiimide;

[0053] The hard segment of the polyester elastomer is polyethylene terephthalate, and the soft segment is polyethylene glycol and polypropylene glycol with a mass ratio of 1:2, wherein the number average molecular weight of polyethylene glycol is 1000, The number average molecular weight of polypropylene glycol is 1000. Wherein, in the polyester elastomer, the weight percentage of the hard segment is 25%.

[0054] The volume resistivity of the polyester elastomer composition is an order of magnitude higher than that of the polyester elastomer, and the long-term hydrolysis resistance is significantly improved. After being immersed in hot water at 95°C for 90 days, it...

Embodiment 2

[0056] A kind of polyester elastomer composition, component comprises:

[0057] 100 parts by weight of polyester elastomer;

[0058] Ethylene-methacrylate Elvaloy AC 1125 30 parts by weight;

[0059] 10 parts by weight of polycarbodioxide;

[0060] The polycarbodiidene compound is poly(3-methylhexamethylenecarbodiimide);

[0061] The polyester elastomer is a block copolyether ester of polybutylene terephthalate and polytetramethylene glycol (manufactured by Shanghai Yitan New Material Co., Ltd., brand name "HP4011", Shore hardness 40D), The hard segment of the polyester elastomer is polybutylene terephthalate, and the soft segment is polytetramethylene glycol, wherein the number average molecular weight of the polytetramethylene glycol is 2000. Wherein, in the polyester elastomer, the weight percentage of the hard segment is 40%.

[0062] The volume resistivity of the polyester elastomer composition is 2 orders of magnitude higher than that of the polyester elastomer, and ...

Embodiment 3

[0064] A kind of polyester elastomer composition, component comprises:

[0065] 100 parts by weight of polyester elastomer;

[0066] Ethylene-ethyl acrylate Elvaloy AC 2116 10 parts by weight;

[0067] 0.05 parts by weight of polycarbodioxide;

[0068] The polycarbodiidene compound is a polyalkylenecarbodiimide.

[0069] The hard segment of the polyester elastomer is polyethylene naphthalate, and the soft segment is polyethylene glycol, wherein the number average molecular weight of polyethylene glycol is 2000. Wherein, in the polyester elastomer, the weight percentage of the hard segment is 50%.

[0070] The volume resistivity of the polyester elastomer composition is an order of magnitude higher than that of the polyester elastomer, and the long-term hydrolysis resistance is significantly improved. After being immersed in hot water at 95°C for 90 days, its tensile strength retention rate is 95%. %, the elongation at break remains 85%; the melt fluidity is reduced, and th...

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Abstract

The invention relates to a polyester elastomer composite. The polyester elastomer composite is prepared from, by weight, 100 parts of polyester elastomer, 1-30 parts of vinyl elastomer and 0.01-10 parts of a poly-carbonization disulfoxide compound. The volume specific resistance ratio of the polyester elastomer composite is increased by 1-2 magnitude order compared with that of polyester elastomer; long-term hydrolysis resistance is remarkably improved, the tensile strength retention rate is 85% or above after the polyester elastomer composite is soaked for 90 days in hot water of 95 DEG C, and the break elongation is kept 80% or above; melt flowability is reduced, the melt index is reduced to 10 g / 10 min or below from 20-30 g / 10 min, and therefore forming processing is more stable. The polyester elastomer composite is excellent in electric insulating performance and has good hydrolysis resistance and stable processing forming performance, and the polyester elastomer composite is applicable to extruding, injection molding, calendering and various forming methods.

Description

technical field [0001] The present invention relates to a polyester elastomer composition. Background technique [0002] Due to its excellent physical and mechanical properties, such as high strength, high toughness, fatigue resistance, abrasion resistance, oil resistance, chlorine resistance and low temperature resistance, the application fields of polyester elastomers continue to expand. At the same time, the requirements for other special functions are also getting higher and higher. For example, in terms of cables for rail transit and wiring harnesses for automobiles, polyester elastomers are a good choice due to their own advantages in various aspects, but their electrical insulation is still limited. There is a certain gap, and the volume resistivity is low, about 10E10~10E13Ω cm (the volume resistivity of polyester elastomers with different hardness is different, and the volume resistivity increases with the increase of hardness), while rail transit cables and automob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L67/04C08L23/08C08L79/00
CPCC08L67/02C08L67/04C08L2205/03C08L23/0853C08L79/00C08L23/0869C08L23/0815
Inventor 南建举刘森林何三雄管祎嗣程睿
Owner SHANGHAI YITAN NEW MATERIAL CO LTD