TPU film with automatic-repairing functions, and preparation method thereof

A film and raw material technology, applied in the field of biomaterials, can solve the problem that the self-healing function is not particularly prominent, and achieve the effects of good flexibility and wear resistance, broad application prospects and good comprehensive performance.

Inactive Publication Date: 2017-07-14
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material is injected into the plastic polymer. When the object cracks, the injected material will be released to automatically repair the damaged object surface. At present, self-healing materials are attracting attention in more and more fields. Thermoplastic polyurethane ( TPU), as a new type of organic polymer synthetic material, has excellent properties and has broad application prospects in many aspects. However, the current polyurethane material does not have a particularly outstanding performance in self-repairing function. Therefore, in this paper If a polyurethane material with self-healing function can be developed, it will expand the application prospects of polyurethane in more fields

Method used

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  • TPU film with automatic-repairing functions, and preparation method thereof
  • TPU film with automatic-repairing functions, and preparation method thereof
  • TPU film with automatic-repairing functions, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this embodiment, the TPU film is prepared from the following raw material components:

[0044]

[0045]Wherein the diisocyanate is a mixture of toluene diisocyanate and 1,6-hexamethylene diisocyanate, the mass ratio of toluene diisocyanate and 1,6-hexamethylene diisocyanate is 1:4, and the polyol is polyester polyol and polyether polyol , wherein the mass ratio of polyester polyol and polyether polyol is 2:1, the number average molecular weight of the polyol is 1000, the number average molecular weight of styrene-acrylonitrile copolymer is 6000, and the chain extender is ethylene glycol, The catalyst is stannous octoate.

[0046] The preparation method is as follows:

[0047] (1) Add diisocyanate to A storage tank, polyols to B storage tank, chain extender and catalyst to C storage tank, stir at 400r / min at a speed of -0.2kPa vacuum dehydration at 70°C, pumping and injecting into the twin-screw extruder;

[0048] (2) Add 2-acrylamido-2-methyl-1-propanesulfonic ...

Embodiment 2

[0051] In this embodiment, the TPU film is prepared from the following raw material components:

[0052]

[0053] Wherein the diisocyanate is a mixture of toluene diisocyanate and 1,6-hexamethylene diisocyanate, the mass ratio of toluene diisocyanate and 1,6-hexamethylene diisocyanate is 1:5, and the polyol is polyester polyol and polyether polyol , wherein the mass ratio of polyester polyol and polyether polyol is 3:1. The number average molecular weight of the polyol is 2000, the number average molecular weight of styrene-acrylonitrile copolymer is 8000, and the chain extender is 1,3- Propylene glycol, the catalyst is dibutyltin dioctoate.

[0054] The preparation method is as follows:

[0055] (1) Add diisocyanate to A storage tank, polyol to B storage tank, chain extender and catalyst to C storage tank, and stir at 500r / min at a pressure of -0.3kPa vacuum dehydration at 60°C, pumping and injecting into the twin-screw extruder;

[0056] (2) Add 2-acrylamido-2-methyl-1...

Embodiment 3

[0059] In this embodiment, the TPU film is prepared from the following raw material components:

[0060]

[0061] Wherein the diisocyanate is a mixture of toluene diisocyanate and 1,6-hexamethylene diisocyanate, the mass ratio of toluene diisocyanate and 1,6-hexamethylene diisocyanate is 1:8, and the polyol is polyester polyol and polyether polyol , wherein the mass ratio of polyester polyol and polyether polyol is 1:1, the number average molecular weight of said polyol is 3000, the number average molecular weight of styrene-acrylonitrile copolymer is 5000, and the chain extender is 1.5 - Pentylene glycol, the catalyst is dibutyltin dilaurate.

[0062] The preparation method is as follows:

[0063] (1) Add diisocyanate to storage tank A, polyols to storage tank B, chain extender and catalyst to storage tank C, stir at 600r / min at a pressure of -0.1kPa vacuum dehydration at 80°C, pumping and injecting into the twin-screw extruder;

[0064] (2) Add 2-acrylamido-2-methyl-1-...

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Abstract

The invention provides a TPU film with automatic-repairing functions, and a preparation method thereof. The TPU film with automatic-repairing functions comprises, by weight, 50 to 60 parts of diisocyanate, 35 to 50 parts of a polyol, 0.01 to 0.5 part of graphene, 5 to 10 parts of 2-acrylamido-2-methyl-1-propanesulfonic acid, 15 to 30 parts of acrylonitrile-styrene copolymer, 2 to 8 parts of a chain extender, and 0.1 to 1 part of a catalyst. The TPU film possesses automatic-repairing functions; automatic repairing healing rate is 94% or higher; the TPU film is provided with excellent flexibility, wear resistance, and comprehensive properties by cooperation of the ingredients, and can be used in the fields such as medicine industry, electricity, and machinery with requirements on self repairing functions; and application prospect is promising.

Description

technical field [0001] The invention belongs to the technical field of biomaterials, and relates to a TPU film and a preparation method thereof, in particular to a TPU film with an automatic repair function and a preparation method thereof. Background technique [0002] Self-healing materials are a new type of material that can repair itself when an object is damaged. This material is injected into the plastic polymer. When the object cracks, the injected material will be released to automatically repair the damaged object surface. At present, self-healing materials are attracting attention in more and more fields. Thermoplastic polyurethane ( TPU), as a new type of organic polymer synthetic material, has excellent properties and has broad application prospects in many aspects. However, the current polyurethane material does not have a particularly outstanding performance in self-repairing function. Therefore, in this paper If a polyurethane material with self-healing funct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L75/06C08L75/08C08L25/12C08K3/04C08K5/42C08G18/76C08G18/73C08G18/66C08G18/48C08G18/42C08G18/32
CPCC08L75/04C08G18/42C08G18/48C08G18/6607C08G18/6618C08G18/724C08G18/73C08G18/7614C08J5/18C08J2375/04C08J2375/06C08J2375/08C08J2425/12C08K2201/001C08L75/06C08L75/08C08L2203/16C08L25/12C08K3/04C08K5/42
Inventor 何建雄王一良杨博
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
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