TPU film with high hydrolytic stability and preparation method thereof

A technology of hydrolysis stability and hydrolysis resistance stabilizer, which is applied in the field of high hydrolysis stability TPU film and its preparation, can solve the problems that need to be further improved, and achieve the improvement of heat resistance and stability, increase heat resistance and stability, and light resistance stability Improved effect

Inactive Publication Date: 2016-11-09
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, epoxy resin and polycarbodiimide are added to TPU particles to prepare TPU films with high hydrolytic stability, which improves the hydrolytic stability of TPU film products, but still needs to be further improved

Method used

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  • TPU film with high hydrolytic stability and preparation method thereof
  • TPU film with high hydrolytic stability and preparation method thereof
  • TPU film with high hydrolytic stability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of TPU film with high hydrolysis stability, comprises following composition by weight part:

[0042]

[0043] Wherein, the hydrolysis-resistant stabilizer is a mixture of N,N'-bis(2,6-diisopropylphenyl)carbodiimide and mono-2-oxazoline in a molar ratio of 1:0.3;

[0044] Described antioxidant is that the combination of antioxidant 1010 and phosphite antioxidant 618 molar ratio is 1:5;

[0045] The heat-resistant stabilizer is a combination of methyl ester group tin mercaptide stabilizer and zinc stearate with a molar ratio of 1:2.

[0046] and prepared by:

[0047] (1) Dry the raw materials under vacuum at 60°C for more than 3 hours and then mix them;

[0048] (2) Melt and blend the mixed material in a high-speed mixer at 230° C. with a rotation speed of 40,000 r / min for 3 hours to obtain a composite masterbatch;

[0049] (3) The masterbatch is processed by film blowing to obtain the TPU film.

Embodiment 2

[0051] A kind of TPU film with high hydrolysis stability, comprises following composition by weight part:

[0052]

[0053] Wherein, the hydrolysis-resistant stabilizer is a mixture of N,N'-bis(2,6-diisopropylphenyl)carbodiimide and mono-2-oxazoline in a molar ratio of 1:1;

[0054] Described antioxidant is the combination that antioxidant 1076 and phosphite antioxidant 168 molar ratio are 1:0.2;

[0055] Described heat-resistant stabilizer is the combination that tin stabilizer and zinc stearate mol ratio are 1:0.5;

[0056] and prepared by:

[0057] (1) Dry the raw materials under vacuum at 70°C for more than 5 hours and then mix them;

[0058] (2) Melt and blend the mixed material in a high-speed mixer at 150°C with a rotation speed of 50,000r / min for 0.5h to obtain a composite masterbatch;

[0059] (3) Carrying out casting and film-forming processing of the masterbatch to obtain the TPU film.

Embodiment 3

[0061] A kind of TPU film with high hydrolysis stability, comprises following composition by weight part:

[0062]

[0063] Wherein, the hydrolysis-resistant stabilizer is a mixture of N,N'-bis(2,6-diisopropylphenyl)carbodiimide and mono-2-oxazoline in a molar ratio of 1:2;

[0064] Described antioxidant is the combination that polyphenol antioxidant 1010 and phosphite antioxidant 168 molar ratio are 1:1;

[0065] Described heat-resistant stabilizer is the combination that methyl ester group tin mercaptide stabilizer and zinc stearate mol ratio are 1:3;

[0066] and prepared by:

[0067] (1) Mix the raw materials after drying at 50°C for 2 hours under vacuum;

[0068] (2) Melt and blend the mixed material in a high-speed mixer at 200°C with a rotation speed of 20000r / min for 2.5h to obtain a composite masterbatch;

[0069] (3) Carrying out calendering and film-forming processing on the masterbatch to obtain the TPU film.

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Abstract

The invention provides a TPU film with high hydrolytic stability and a preparation method thereof. The TPU film comprises, by weight, 100 parts of polyether type TPU particles, 5 to 20 parts of a hydrolysis-resistant stabilizing agent, 0.1 to 5 parts of an antioxidant and 0.1 to 5 parts of a thermal stabilizing agent, wherein the hydrolysis-resistant stabilizing agent is a mixture of N,N'-bis(2,6-diisopropylphenyl)carbodiimide and mono(2-oxazoline) in a mol ratio of 1: 0.3-2. The TPU film provided by the invention has excellent hydrolysis resistance.

Description

technical field [0001] The invention relates to a TPU film and a preparation method thereof, in particular to a TPU film with high hydrolysis stability and a preparation method thereof. Background technique [0002] TPU (Thermoplastic polyurethanes) is called thermoplastic polyurethane elastomer rubber, which is mainly divided into polyester type and polyether type. It has a wide range of hardness (60HA-85HD), wear resistance, oil resistance, transparency, good elasticity, and is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. [0003] TPU film is a film made by special processes such as calendering, casting, film blowing and coating on the basis of TPU pellets. TPU (thermoplastic polyurethane) is increasingly popular because of its superior performance and environmental protection concept. At present, wherever PVC is used, TPU can become a substitute for PVC. However, the advantages of TPU are beyond the reach of PVC. TPU n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08K5/29C08K5/353C08K5/58C08K5/098
CPCC08K5/29C08J5/18C08J2375/08C08K5/098C08K5/353C08K5/58C08L2201/08C08L2203/16
Inventor 何建雄王一良
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
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