A kind of preparation method of high haze and high wear resistance thermoplastic polyurethane elastomer

A thermoplastic polyurethane and elastomer technology, which is applied in the field of thermoplastic polyurethane elastomers, can solve the problems of TPU processing difficulty, etc., and achieve the effects of good rigidity and permanent compression deformation, stable wear resistance, and less internal heat generation

Active Publication Date: 2020-02-07
苏州奥斯汀新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a high-haze and high-wear-resistant thermoplastic polyurethane elastomer with good comprehensive performance and processing performance, so as to solve the problem of difficult processing of TPU in the prior art

Method used

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  • A kind of preparation method of high haze and high wear resistance thermoplastic polyurethane elastomer
  • A kind of preparation method of high haze and high wear resistance thermoplastic polyurethane elastomer
  • A kind of preparation method of high haze and high wear resistance thermoplastic polyurethane elastomer

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Effect test

Embodiment 1

[0029] 1) adding tetrakis (4-hydroxyl-3,5-tert-butylphenyl propionate) pentaerythritol ester accounting for 0.45% of the total mass of the polyurethane elastomer in the reactor, accounting for the stannous octoate of 150ppm of the total mass of the polyurethane elastomer, Polyester diol (number-average molecular weight 700-1000, condensed from adipic acid and 1,3-propanediol) accounting for 10% of the total mass of polyurethane elastomer, cyclic polydiol accounting for 1.2% of the total mass of polyurethane elastomer Methylsiloxane, 1,4-butanediol accounting for 13.4% of the total mass of polyurethane elastomer, a polyester polyol with a number average molecular weight of 3500 formed by condensation of adipic acid and 1,4-butanediol, in Dehydration, melting and mixing for 3 hours under the temperature condition of 105°C and vacuum degree of -0.09~-0.1MPa, put the water content into the measuring tank after the water content is lower than 400ppm, open the measuring tank and stir...

Embodiment 2

[0035] 1) Add tetrakis(4-hydroxyl-3,5-tert-butylphenyl propionate) pentaerythritol ester accounting for 0.45% of the total mass of polyurethane elastomer to the reactor, account for stannous octoate of 150ppm of the total mass of polyurethane elastomer, and account for 0.45% of the total mass of polyurethane elastomer. 10% polyester diol (number average molecular weight 700-1000, condensed from adipic acid and 1,3-propanediol) with 10% of the total mass of the elastomer, cyclic polydimethyl alcohol with 0.8% of the total mass of the polyurethane elastomer Siloxane, 1,4-butanediol accounting for 7.5% of the total mass of polyurethane elastomer, a polyester polyol with a number average molecular weight of 3500 formed by condensation of adipic acid and 1,4-butanediol, at 105°C Under the temperature conditions of -0.09~-0.1MPa vacuum, dehydration, melting and mixing for 3 hours, after the water content is lower than 400ppm, put it into the metering tank, open the metering tank and ...

Embodiment 3

[0041] 1) Add tetrakis(4-hydroxyl-3,5-tert-butylphenyl propionate) pentaerythritol ester accounting for 0.45% of the total mass of polyurethane elastomer to the reactor, account for stannous octoate of 150ppm of the total mass of polyurethane elastomer, and account for 0.45% of the total mass of polyurethane elastomer. 10% of the total mass of the elastomer is polyester diol (the number average molecular weight is 700-1000, formed by condensation of adipic acid and 1,3-propanediol), and 1.8% of the total mass of the polyurethane elastomer is cyclic polydimethyl Siloxane, 1,4-butanediol accounting for 18% of the total mass of polyurethane elastomer, a polyester polyol with a number average molecular weight of 3500 formed by condensation of adipic acid and 1,4-butanediol, at 105°C Under the temperature conditions of -0.09~-0.1MPa vacuum, dehydration, melting and mixing for 3 hours, after the water content is lower than 400ppm, put it into the metering tank, open the metering tank...

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Abstract

The invention relates to a preparation method of a thermoplastic polyurethane elastomer with high haze and high wear resistance. The preparation method comprises the following steps: firstly, uniformly stirring and melting polyester polyol, small molecule diol, a chain extender, a catalyst, an antioxidant agent, a light stabilizer and cyclic polydimethylsiloxane according to certain mass proportions for later use; secondly, metering a product obtained in the first step and diisocyanate by a high-precision flowmeter, then carrying out rapid mixing by a gear pump and a mixing head with high rotating speed, subsequently, pouring a mixture into a double-screw extruder, carrying out sufficient melting reaction by the extruder and then obtaining the thermoplastic polyurethane elastomer with high haze and high wear resistance by an underwater granulator. The product disclosed by the invention can be used for occasions such as wire guide roller frameworks, wire guide rollers, mechanical parts, shaft seals, football soles, sports shoes supporting frames or automobile parts; in addition, the product has good comprehensive performance and good processing performance, belongs to an environment-friendly product, and can be used for replacing general plastics and partial engineering plastics.

Description

technical field [0001] The invention relates to the field of thermoplastic polyurethane elastomers, in particular to a preparation method of high haze and high wear resistance thermoplastic polyurethane elastomers. Background technique [0002] Thermoplastic polyurethane elastomer (also known as TPU) new material is called "epoch-making new polymer material" and is one of the six most promising synthetic materials in the world. [0003] TPU is a (AB) n-type block linear or a small amount of branched, cross-linked polymer material. The hardness range of TPU is quite wide, from Shao A60 to Shao D80 and has high elasticity throughout the hardness range; TPU has good flexibility in a wide temperature range (-40 to 120); TPU also has good weather resistance, Excellent resistance to high-energy rays, and its abrasion resistance, tear resistance, and bending strength are excellent; high tensile strength, high elongation, and low long-term compression set rate are all significant f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/06C08L83/04C08L23/06C08K5/134C08G18/76C08G18/66C08G18/42C08G18/32
CPCC08G18/3206C08G18/4238C08G18/6637C08G18/7678C08L75/06C08L2205/025C08L2205/035C08L83/04C08L23/06C08K5/1345
Inventor 邓春艳周述明汪泽恒闫景春杨向宏
Owner 苏州奥斯汀新材料科技有限公司
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