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Non-polar modified TPU for shoe materials and preparation method thereof

A non-polar, shoe material technology, applied in the field of thermoplastic polyurethane, can solve the problems of increased odor, influence of soft segment content, poor yellowing resistance, etc., to reduce product processing temperature, improve hydrolysis stability, improve The effect of liquidity

Active Publication Date: 2020-11-27
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages are that these methods will make the mechanical strength of the TPU material worse, the odor will become larger, and the yellowing resistance will be worse.
"Preparation and Performance Research of Thermoplastic Polyurethane with Dimer Alcohol as Soft Segment" mentioned starting from the structure of the soft segment, introducing bio-based diol-dimer alcohol with non-polar side chains as the soft segment, and using MDI and BDO synthesized a new type of thermoplastic polyurethane PDU for the hard segment. The soft segment of the PDU is all composed of dimer alcohol. The content of the soft segment is 40%, which means that the performance of the PDU has reached a better state. Improve or reduce the content of the soft segment. will be affected, which greatly limits the adjustable range of product hardness, which in turn affects the application range of the product

Method used

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  • Non-polar modified TPU for shoe materials and preparation method thereof
  • Non-polar modified TPU for shoe materials and preparation method thereof
  • Non-polar modified TPU for shoe materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The non-polar modified TPU used for shoe materials is made of the following raw materials in parts by mass:

[0030]

[0031] The preparation method comprises the following steps:

[0032] (1) Mix dimer alcohol, polyethylene adipate polyol and 1,4-butanediol, then add antioxidant 1010, and fully stir at 90°C to obtain a premix;

[0033] (2) Add 4,4'-diphenylmethane diisocyanate and stannous octoate catalyst to storage tank A, add the premix to storage tank B, stir at 500r / min, and vacuum at 110°C Dehydration, injection into the twin-screw extruder;

[0034] (3) React in a twin-screw extruder at 120°C and granulate to obtain TPU particles; the temperature of the feeding section of the twin-screw extruder is 110°C, the temperature of the mixing section is 130°C, and the temperature of the extrusion section is 170°C , the head temperature is 150°C.

Embodiment 2

[0036] The non-polar modified TPU used for shoe materials is made of the following raw materials in parts by mass:

[0037]

[0038]

[0039] The preparation method comprises the following steps:

[0040] (1) Mix dimer alcohol, polybutylene adipate polyol and 1,4-butanediol, then add antioxidant 1024, stir well at 100°C to obtain a premix;

[0041] (2) Add hexamethylene diisocyanate and stannous octoate catalyst into storage tank A, add the pre-mixture into storage tank B, stir at 400r / min, dehydrate in vacuum at 110°C, and pump into double In a screw extruder;

[0042] (3) At 130°C, react in a twin-screw extruder and granulate to obtain TPU particles; the temperature of the feeding section of the twin-screw extruder is 120°C, the temperature of the mixing section is 150°C, and the temperature of the extrusion section is 180°C °C, the head temperature is 160 °C.

Embodiment 3

[0044] The non-polar modified TPU used for shoe materials is made of the following raw materials in parts by mass:

[0045]

[0046] The preparation method comprises the following steps:

[0047] (1) Mix dimer alcohol, polybutylene adipate polyol and 1,6-hexanediol mixed chain extender, then add antioxidant 264, and fully stir at 100°C to obtain a premix;

[0048] (2) Add 4,4'-diphenylmethane diisocyanate and stannous octoate catalyst into storage tank A, add the premix into storage tank B, stir at 600r / min, and vacuum dehydrate at 110°C , injected into the twin-screw extruder;

[0049] (3) React in a twin-screw extruder at 160°C, and granulate to obtain TPU particles; the temperature of the feeding section of the twin-screw extruder is 120°C, the temperature of the mixing section is 150°C, and the temperature of the extrusion section is 180°C. The head temperature is 160°C.

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Abstract

The invention belongs to the technical field of thermoplastic polyurethane, and particularly relates to non-polar modified TPU for shoe materials and a preparation method of the non-polar modified TPU. The TPU is prepared from the following raw materials in parts by weight: 20-40 parts of diisocyanate, 20-30 parts of dihydric alcohol with a non-polar side chain, 30-50 parts of polyester polyol, 5-10 parts of a chain extender, 0.1-0.5 parts of an antioxidant and 0.5-1 part of a catalyst. According to the invention, dimer alcohol with a non-polar side chain is introduced, dimer alcohol and polyester polyol are used as soft segments to react with diisocyanate and a small molecular chain extender, meanwhile, a fast forming process of premixing dimer alcohol, polyester polyol and a chain extender is used, the prepared TPU not only has the advantages of excellent wear resistance, good mechanical strength and excellent oil resistance and oxidation resistance of the urethane elastomer, but also has excellent hydrolytic stability, low-temperature performance, processing fluidity and elasticity, and meanwhile, can avoid the problems of precipitation, odor and the like caused by addition of aplasticizer.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polyurethane, and in particular relates to a non-polar modified TPU used for shoe materials and a preparation method thereof. Background technique [0002] Running and outdoor sports have become more and more popular fitness methods nowadays, and hydrolysis resistance, low temperature performance and elasticity are important indicators to measure shoe materials. Thermoplastic polyurethane elastomer (TPU) is a kind of polymer synthetic material with excellent performance. It not only has the elasticity of rubber but also the hardness of plastic, and also has good mechanical properties and resilience properties. It is widely used in shoe materials. However, TPU molecules contain more strong polar groups (such as ester groups, ether groups, carbamate groups, urea groups, biuret groups and allophanate groups, etc.), which endow TPU with polarity. Excellent performance and at the same time, non-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/32C08G18/42C08G18/44
CPCC08G18/6674C08G18/3212C08G18/3206C08G18/4238C08G18/44
Inventor 徐艳艳陈淑海宋小娜高振胜管永王真
Owner SHANDONG INOV POLYURETHANE
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