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Preparation method of thermoplastic polyurethane elastomer

A thermoplastic polyurethane and elastomer technology, which is applied in the field of polymer preparation, can solve the problems of easy softening, decomposition, limited application scope, and decreased mechanical properties, etc., to increase heat resistance and anti-aging properties, increase heat resistance, The effect of improving mechanical properties

Inactive Publication Date: 2013-04-24
DONGGUAN JIXIN POLYMER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better strengths from both materials like PEAs or CHDI compared to traditional methods such as epoxy resin systems. It also increases its thermal stability over longer periods without losing effectiveness during use. Additionally, this new material combines certain technical features including specific structures made up of these components together into an overall stronger composite product.

Problems solved by technology

The technical problem addressed by this patented patents relates to improving the durable life span for thermoset urethaulators without compromising their ability to resist damage from external factors like impacts caused during transportations. This includes maintaining flexibility, toughness, tensile force, compression set capacity, flow capacitance, and low temperature tolerances while also having superior chemical stability over time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of thermoplastic polyurethane elastomer provided by the present embodiment, comprises the following steps:

[0028] In the first step, 30wt% of 1,4-cyclohexane diisocyanate, 60wt% of polyethylene adipate (molecular weight of 3000), 8wt% of chain extender 1,4-butanediol, 0.5 wt% lubricant stearamide wax, 0.5wt% antioxidant β-(4-hydroxy-3,5-di-tert-butylphenyl) n-octadecyl propionate, 0.05wt% titanium system catalyst, 0.5wt% of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate and 0.45wt% of carbodiimide hydrolysis resistance agent in the mixer After fully stirring at 100°C for 20 minutes, fully masticate at 140°C in a high-temperature plastic machine or internal mixer, and obtain a thermoplastic polyurethane elastomer matrix after drying.

[0029] In the second step, the nano-SiO 2 Filler, γ-methacryloxypropyltrimethoxysilane, cyclohexane and n-propylamine are added to the reaction vessel according to the mass ratio of 1:15:10:10, stirred at ...

Embodiment 2

[0032] A kind of preparation method of thermoplastic polyurethane elastomer provided by the present embodiment, comprises the following steps:

[0033] The first step, the 1,4-cyclohexane diisocyanate of 40wt%, the polyethylene adipate of 50wt%, the chain extender 1,4-butanediol of 6wt%, the lubricant of 2wt% Denier wax, 0.3wt% antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 0.005wt% bismuth catalyst, 1.2wt% bis( 2,2,6,6-Tetramethyl-4-piperidinyl) sebacate and 0.495wt% carbodiimide hydrolysis resistance agent were placed in a mixer at 110°C for 10 minutes and then fully stirred , in a high-temperature plastic machine or internal mixer, fully masticated at 155 ° C, and obtained a thermoplastic polyurethane elastomer matrix after drying.

[0034] In the second step, the nano-TiO 2Filler, γ-methacryloxypropyltrimethoxysilane, cyclohexane and n-propylamine were added to the reaction vessel according to the mass ratio of 1:20:15:15, s...

Embodiment 3

[0037] A kind of preparation method of thermoplastic polyurethane elastomer provided by the present embodiment, comprises the following steps:

[0038] In the first step, 20wt% of 1,4-cyclohexane diisocyanate, 70wt% of polyethylene adipate (molecular weight of 3000), 5wt% of chain extender 1,4-butanediol, 3wt% % lubricant montan wax, 0.2wt% antioxidant bis[(2,4-di-tert-butylphenyl) phosphite] pentaerythritol ester, 0.02wt% bismuth catalyst, 0.28wt% bis(2 , 2,6,6-tetramethyl-4-piperidinyl) sebacate and 1.5wt% carbodiimide hydrolysis-resistant agent were placed in a mixer at 90 ° C for 30 minutes, Fully masticate at 130°C in a high-temperature plastic machine or internal mixer, and obtain a thermoplastic polyurethane elastomer matrix after drying.

[0039] In the second step, add nano-MgO filler, γ-methacryloxypropyltrimethoxysilane, cyclohexane and n-propylamine into the reaction vessel according to the mass ratio of 1:10:3:3, and stir at room temperature for 10 minutes , the...

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PUM

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Abstract

The invention belongs to the technical field of polymer preparation, and especially relates to a preparation method of a thermoplastic polyurethane elastomer. The method comprises the following steps: 1, putting 1,4-cyclohexyl diisocyanate, polyethylene glycol adipate, 1,4-butylene glycol, a lubricant and a hydrolysis resistance agent in a blender, fully stirring, and fully plastifying in a high-temperature plastifying machine or a high-temperature internal mixer to obtain a thermoplastic polyurethane elastomer matrix; 2, processing an inorganic nanofiller by a silane coupling agent to obtain an modified inorganic nanofiller; and 3, dissolving the thermoplastic polyurethane elastomer matrix in tetrahydrofuran, adding the modified inorganic nanofiller, mechanically stirring, removing tetrahydrofuran, and carrying out film forming to obtain the thermoplastic polyurethane elastomer. Compared with the prior art, the method provided by the invention can effectively increase the heat resistance, the mechanical performances and the ageing resistance of the polyurethane elastomer on the premise that the comprehensive performances of the thermoplastic polyurethane elastomer do not decrease.

Description

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Claims

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Application Information

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Owner DONGGUAN JIXIN POLYMER SCI & TECH
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