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High-weather-resistance ultra-transparent thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and ultra-transparent technology, applied in the field of polyurethane, can solve the problems of not being able to meet the requirements of high transparency and transparency, and achieve the effects of good yellowing resistance, reduced crystallinity, and good weather resistance

Pending Publication Date: 2020-08-18
山东科力美实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such methods cannot meet the transparency requirements of high transparency, especially products with a thickness of more than 4mm

Method used

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  • High-weather-resistance ultra-transparent thermoplastic polyurethane elastomer and preparation method thereof
  • High-weather-resistance ultra-transparent thermoplastic polyurethane elastomer and preparation method thereof
  • High-weather-resistance ultra-transparent thermoplastic polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In percent by weight, 30.50% of polybutylene adipate diol (PBA1000) with a molecular weight of 1000 and 30.50% of a polybutylene adipate diol (PEBA1000) with a molecular weight of 1000 are mixed, and the storage tank The material temperature is 90±5°C; add 0.50% of antioxidant, 0.20% of light stabilizer, 0.50% of ultraviolet absorber, 0.10% of lubricant, and 0.50% of other additives into the above-mentioned macromolecular glycol storage tank, fully Stir to dissolve, this is component B.

[0045] Diisocyanate MDI 25.20% and hydrogenated MDI 6.30% are mixed as component A, and the tank of component A is kept at 60±5°C; small molecule diols BDO 4.55% and MPO 1.14% are mixed as component C, and the tank of component C is mixed The tank is kept warm at 60±5°C. The three components pass through the mass flow perfusion system respectively, set the target flow according to the mass percentage of the above three components, mix and perfuse at high speed through the mixing head ...

Embodiment 2

[0047] In weight percentage, 24.30% of polyethylene adipate diol (PEA1000) with a molecular weight of 1000 and 24.30% of a polyethylene adipate diol (PEBA1000) with a molecular weight of 1000 are mixed, and the storage tank The material temperature is 90±5°C; add 0.50% of antioxidant, 0.20% of light stabilizer, 0.50% of ultraviolet absorber, 0.10% of lubricant, and 0.50% of other additives into the above-mentioned macromolecular glycol storage tank, fully Stir to dissolve, this is component B.

[0048] Diisocyanate MDI 27.90%, MDI-50 12.00% mixed, as A component, A component tank insulation 60 ± 5 ℃; small molecular diol BDO 7.75%, HDO 1.94% mixed as C component, C component The barrel tank is kept warm at 60±5°C. The three components pass through the mass flow perfusion system respectively, set the target flow according to the mass percentage of the above three components, mix and perfuse at high speed through the mixing head into the co-rotating twin-screw reaction extruder...

Embodiment 3

[0050] In percent by weight, 20.60% of polybutylene adipate diol (PBA1000) of molecular weight 1000 and 20.60% of polyethylene adipate diol (PEA1000) of molecular weight 1000 are mixed, and the material temperature of the storage tank is 90 ±5°C; add 0.50% of antioxidant, 0.20% of light stabilizer, 0.50% of ultraviolet absorber, 0.10% of lubricant, and 0.50% of other additives into the above-mentioned macromolecular glycol storage tank, fully stir to dissolve, This is the B component.

[0051] Diisocyanate MDI 40.40%, HDI 4.50% are mixed as component A, and the tank of component A is kept at 60±5°C; small molecule diol BDO 10.09%, 1,3-BDO 2.00% are mixed as component C, C The component tank is kept warm at 60±5°C. The three components pass through the mass flow perfusion system respectively, set the target flow according to the mass percentage of the above three components, mix and perfuse at high speed through the mixing head into the co-rotating twin-screw reaction extruder...

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Abstract

The invention belongs to the technical field of polyurethane, and particularly relates to a high-weather-resistance ultra-transparent thermoplastic polyurethane elastomer and a preparation method thereof. The thermoplastic polyurethane elastomer comprises the following raw materials: macromolecular diol, diisocyanate micromolecular diol, an antioxidant, a lubricant, a catalyst, an ultraviolet light absorber and a light stabilizer. The preparation method comprises the following steps: mixing the raw materials, pouring the mixture into a co-rotating twin-screw reactive extruder, carrying out polymerization reaction to obtain a high-molecular polymer; and carrying out underwater granulation, dehydration, drying, packaging and curing treatment to obtain the finished product. The thermoplasticpolyurethane elastomer product disclosed by the invention has ultrahigh transparency, excellent weather resistance and high hardness, wherein the transparency of the polyester type thermoplastic polyurethane elastomer can reach that the turbidity of a 4mm test piece is less than or equal to 2.0% and the turbidity of a 6mm test piece is less than or equal to 5.0%; the transparency of the polyethertype thermoplastic polyurethane elastomer can reach that the turbidity of a 6mm test piece is less than or equal to 2.0% and the turbidity of an 8mm test piece is less than or equal to 5.0%.

Description

technical field [0001] The invention belongs to the technical field of polyurethane, and in particular relates to a highly weather-resistant and ultra-transparent thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] The English name of thermoplastic polyurethane elastomer is Thermoplastic Polyurethane, referred to as TPU. [0003] Thermoplastic polyurethane elastomer (TPU) is a linear-based polymer material produced by the joint reaction of diisocyanate, oligomer polyol and chain extender. It is characterized by repeated urethane groups in its molecular composition, and it also contains other groups such as allophanate, biuret, ester bonds, ether bonds, etc.; from the molecular structure, it consists of rigid chain segments Alternately formed with soft segments, in which the rigid segment is obtained by the reaction of diisocyanate and chain extender, and the soft segment is obtained by the reaction of diisocyanate and macromo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/48C08G18/32C08L75/06C08L91/06C08L67/02C08K5/134C08K5/527C08K5/3435C08K5/20C08K5/00
CPCC08G18/664C08G18/6674C08G18/4202C08G18/4238C08G18/4854C08G18/3206C08L75/06C08K5/00C08K5/20C08K5/1345C08K5/3435C08L2201/10C08L2201/08C08L2205/03
Inventor 张玉国张磊马剑伟许海亮
Owner 山东科力美实业有限公司
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