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A kind of TPU film and preparation method thereof

A film and diisocyanate technology, applied in the field of TPU film and its preparation, can solve the problems of poor elasticity and high temperature resistance

Active Publication Date: 2019-02-19
揭西鑫昌顺电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the alloy is relatively strong in aging resistance, its elasticity and high temperature resistance are poor

Method used

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  • A kind of TPU film and preparation method thereof
  • A kind of TPU film and preparation method thereof
  • A kind of TPU film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In this embodiment, the TPU film comprises the following components by weight:

[0031]

[0032]

[0033] The preparation method comprises the following steps:

[0034] 1) Prepolymerize the oligomer diol and diisocyanate to obtain a prepolymer;

[0035] 2) adding chain extender and chain terminator to the prepolymer to carry out chain extension reaction and chain termination reaction;

[0036] 3) Add TPU granules, antioxidant and catalyst to the material obtained in step 2), mix evenly, and then ripen to obtain a high-temperature-resistant TPU film.

Embodiment 2

[0038] In this embodiment, the TPU film comprises the following components by weight:

[0039]

[0040] The preparation method comprises the following steps:

[0041] 1) Prepolymerize the oligomer diol and diisocyanate to obtain a prepolymer;

[0042] 2) adding chain extender and chain terminator to the prepolymer to carry out chain extension reaction and chain termination reaction;

[0043] 3) Add TPU granules, antioxidant and catalyst to the material obtained in step 2), mix evenly, and then ripen to obtain a high-temperature-resistant TPU film.

Embodiment 3

[0045] In this embodiment, the TPU film comprises the following components by weight:

[0046]

[0047] The preparation method comprises the following steps:

[0048] 1) Prepolymerize the oligomer diol and diisocyanate to obtain a prepolymer;

[0049] 2) adding chain extender and chain terminator to the prepolymer to carry out chain extension reaction and chain termination reaction;

[0050] 3) Add TPU granules, antioxidant and catalyst to the material obtained in step 2), mix evenly, and then ripen to obtain a high-temperature-resistant TPU film.

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Abstract

The invention discloses a TPU (Thermoplastic Polyurethanes) thin film and a preparation method thereof. The TPU thin film provided by the invention is prepared from the following components in parts by weight: 60 to 65 parts of low polymer dihydric alcohol, 20 to 35 parts of diisocyanate, 5 to 8 parts of chain extender, 3 to 5 parts of chain terminator, 20 to 30 parts of TPU particles, 0.2 to 0.5 part of antioxygen, and 0.05 to 0.4 part of catalyst. The high temperature resistance of the TPU thin film can achieve 90 percent or more.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polyurethane elastomers, and in particular relates to a TPU film and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is composed of linear polyol (usually polyester or polyether polyol), organic diisocyanate and small molecule chain extender. Its overall performance depends on the type of polyol, the structure of isocyanate and chain extender, and the ratio of soft and hard segments. By selecting the components of TPU and adjusting their proportions, the properties of the material can be changed in a wide range, so that it has both the flexibility of rubber and the rigidity of plastic, and has high strength, high elongation and high elasticity. characteristic. [0003] TPU also has excellent tear resistance, wear resistance, low temperature resistance and other properties, but the high temperature resistance of TPU is poor, once its wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/10C08G18/48C08G18/32C08L75/08
CPCC08G18/10C08G18/4825C08G18/4854C08G18/6674C08J5/18C08J2375/08C08L75/08C08G18/3206
Inventor 张达明
Owner 揭西鑫昌顺电子科技有限公司