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A kind of highly transparent thermoplastic polyurethane elastomer for blown film and preparation method thereof

A thermoplastic polyurethane and elastomer technology, applied in the field of polyurethane materials, can solve the problems of poor transparency and complicated preparation methods of polyurethane, and achieve the effects of excellent mechanical properties, excellent mechanical properties, and suitable melt index

Active Publication Date: 2021-09-28
DONGGUAN JIXIN POLYMER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the two patents finally obtained polyurethane that can be used for blow molding, the final polyurethane obtained has poor transparency and complicated preparation methods

Method used

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  • A kind of highly transparent thermoplastic polyurethane elastomer for blown film and preparation method thereof
  • A kind of highly transparent thermoplastic polyurethane elastomer for blown film and preparation method thereof
  • A kind of highly transparent thermoplastic polyurethane elastomer for blown film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A highly transparent thermoplastic polyurethane elastomer for blown film, consisting of the following components in parts by weight:

[0052]

[0053] Wherein, the diisocyanate is a composition composed of 3,3'-dimethyl-4,4'-biphenyl diisocyanate and dicyclohexylmethane diisocyanate in a molar ratio of 1.5:1; the polyester polyol has an average molecular weight of 1500 polybutylene adipate; the molecular weight of polycarbonate is 15000; the average particle size of nano-silica is 80nm; the diameter of nano-cellulose is 40-60nm, and the aspect ratio is 250-300; The agent is ethylene glycol; the silane coupling agent is isobutyltriethoxysilane; the catalyst is stannous octoate.

[0054] The preparation method is as follows:

[0055] (1) polyester polyol, nanocellulose, chain extender and catalyst are mixed;

[0056] (2) diisocyanate, polycarbonate, nano silicon dioxide and silane coupling agent are mixed;

[0057] (3) After mixing the mixture obtained in step (1) a...

Embodiment 2-4

[0059] The only difference from Example 1 is that the molar ratio of 3,3'-dimethyl-4,4'-biphenyl diisocyanate to dicyclohexylmethane diisocyanate is 2.5:1 (Example 2), 3:1 (Example 3), 1:1 (Example 4).

Embodiment 5-6

[0061] The only difference from Example 1 is that the diisocyanate is 3,3'-dimethyl-4,4'-biphenyl diisocyanate (Example 5) and dicyclohexylmethane diisocyanate (Example 6).

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Abstract

The invention provides a highly transparent thermoplastic polyurethane elastomer for film blowing and a preparation method thereof, comprising the following components in parts by weight: 50-60 parts by weight of diisocyanate; 100-150 parts by weight of polyester polyol; 40-50 parts by weight of carbonate; 10-15 parts by weight of nano silicon dioxide; 5-10 parts by weight of nano-cellulose; 5-10 parts by weight of chain extender; 5-7 parts by weight of silane coupling agent; 1-5 parts by weight of catalyst parts by weight. The thermoplastic polyurethane elastomer provided by the invention has relatively excellent transparency, suitable melt index and excellent mechanical properties, wherein the transparency can be as high as over 90%, and the melt index is between 9-13g / 10min.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and relates to a thermoplastic polyurethane elastomer used for film blowing and a preparation method thereof, in particular to a highly transparent thermoplastic polyurethane elastomer used for blown film and a preparation method thereof. Background technique [0002] Polyurethane is a polymer synthetic material with excellent performance. It has both the elasticity of rubber and the hardness of plastic, and it also has good mechanical properties, wear resistance and resilience. Using its advantages, it can be used to make pulley shoes. wheel. Although the high-resilience wheel material of the polytetrahydrofuran system has good elasticity and wear resistance, the production cost is high and it is not convenient for the general public. However, common polyether polyurethane elastomers with low price have less than 50% impact rebound and poor wear resistance. The pulley made of it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/44C08G18/64C08G18/32C08K3/36C08K5/5419
CPCC08G18/3206C08G18/4081C08G18/4238C08G18/44C08G18/6484C08G18/66C08K3/36C08K5/5419C08K2201/011
Inventor 王一良杨博何建雄
Owner DONGGUAN JIXIN POLYMER SCI & TECH
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