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Damp-heat-resistant thermoplastic polyurethane elastomer material and preparation method thereof

A technology of thermoplastic polyurethane and elastomer materials, applied in the field of polyurethane elastomers, can solve the problems of poor hydrolysis resistance, low temperature resistance and flexibility, polyether TPU mechanical properties, rigidity and wear resistance, etc., and achieve product processing performance Good, low-temperature flexibility, high performance, and high mechanical properties

Pending Publication Date: 2022-01-28
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: to overcome the disadvantages of poor hydrolysis resistance, low temperature resistance and flexibility of the existing polyester TPU, and at the same time overcome the disadvantages of poor mechanical properties, rigidity and w

Method used

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  • Damp-heat-resistant thermoplastic polyurethane elastomer material and preparation method thereof
  • Damp-heat-resistant thermoplastic polyurethane elastomer material and preparation method thereof
  • Damp-heat-resistant thermoplastic polyurethane elastomer material and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0023] Example 1

[0024] As follows a number average molecular weight of polyether ester 1000. Polyol A:

[0025] Adipic acid and 1,6-hexanediol in a molar ratio of 1.10 / 1, was added the reaction kettle was heated with stirring, was added by weight of the total weight of polyether polyol and 1,6-hexanediol 5% small molecule, a number average molecular weight 200, a functionality of 2 polyether polyol, and nitrogen protection, the reaction when the water temperature was raised to 140 deg.] C, the control overhead reflux temperature 100 ℃, accounting added adipic acid, 1,6-hexanediol, and small molecules the total mass of the polyether polyol alcohol 0.005% of tetrabutyl titanate, the temperature was raised to 220 deg.] C, reacted for 2 hours, and then nitrogen bubbling process the condensation water produced by extrusion, the material within the vessel when the acid value is less than 0.6mgKOH / g, a water content of 0.05% or less, a hydroxyl value of viscosity or qualified, i.e...

Example Embodiment

[0026] Example 2

[0027] As it follows a number average molecular weight of 1500 polyether ester polyol B:

[0028] Adipic acid and 1,6-hexanediol in a molar ratio of 1.10 / 1, was added the reaction kettle was heated with stirring, was added 10% by weight of the total weight of polyether polyol and 1,6-hexanediol small molecule, a number average molecular weight 500, a functionality of 2 polyether polyol, and nitrogen protection, the reaction when the water temperature was raised to 140 deg.] C, overhead temperature 102 controls deg.] C to reflux, was added accounted adipic acid, 1,6-hexanediol, and small molecules the total mass of the polyether polyol alcohol 0.005% of tetrabutyl titanate, the temperature was raised to 230 deg.] C, for 3 hours, then nitrogen bubbling process the condensation water produced by extrusion, the material within the vessel when the acid value is less than 0.6mgKOH / g, a water content of 0.05% or less, a hydroxyl value of viscosity or qualified, i.e...

Example Embodiment

[0029] Example 3

[0030] As it follows a number average molecular weight of 2000 polyether polyol C:

[0031] Adipic acid and 1,6-hexanediol in a molar ratio of 1.10 / 1, was added the reaction kettle was heated with stirring, was added 20% by weight of the total weight of polyether polyol and 1,6-hexanediol small molecule, a number average molecular weight 800, a functionality of 2 polyether polyol, and nitrogen protection, the reaction when the water temperature was raised to 140 deg.] C, the control overhead reflux temperature 100 ℃, accounting added adipic acid, 1,6-hexanediol, and small molecules the total mass of the polyether polyol alcohol 0.005% of tetrabutyl titanate, the temperature was raised to 220 deg.] C, for 3 hours, then nitrogen bubbling process the condensation water produced by extrusion, the material within the vessel when the acid value is less than 0.6mgKOH / g, a water content of 0.05% or less, a hydroxyl value of viscosity or qualified, i.e. qualified pro...

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Abstract

The invention belongs to the technical field of polyurethane elastomers, and particularly relates to a damp-heat-resistant thermoplastic polyurethane elastomer material and a preparation method thereof. The damp-heat-resistant thermoplastic polyurethane elastomer material is prepared from polyether ester polyol, diisocyanate, a chain extender and a catalyst A by adopting a one-step method, wherein the polyether ester polyol is obtained by polymerizing adipic acid, 1, 6-hexanediol and micromolecule polyether polyol, a molar ratio of the adipic acid to the 1, 6-hexanediol is (1.10-1.15):1, and the weight of the micromolecule polyether polyol is 5-20% of the total weight of the micromolecule polyether polyol and the 1, 6-hexanediol. According to the invention, the defects that existing polyester type TPU is poor in hydrolysis resistance, low temperature resistance and flexibility are overcome while the defects that polyether type TPU is poor in mechanical performance, rigidity, abrasion resistance and the like are overcome, and the prepared damp-heat-resistant thermoplastic polyurethane elastomer material is high in transparency, resistant to damp heat, soft at low temperature and good in processing performance.

Description

technical field [0001] The invention belongs to the technical field of polyurethane elastomers, and in particular relates to a heat-and-humidity resistant thermoplastic polyurethane elastomer material and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) has good processability, weather resistance and environmental protection, so it is widely used in shoe materials, pipes, films, rollers, cables and wires and other fields. Most of the TPU materials currently used are polyester TPU, which has excellent mechanical properties, excellent wear resistance, solvent resistance, and aging resistance, but the ester group is easily broken by the attack of water molecules, and the acid generated by hydrolysis can The further hydrolysis of the catalytic material, the moisture and heat resistance of polyester thermoplastic polyurethane elastomers is generally poor [0003] Ordinary polyether polyols are alcohol polymers or oligomers co...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/32C08G18/10C08G63/672C08G101/00
CPCC08G18/664C08G18/4252C08G18/10C08G63/672C08G18/3206
Inventor 宋小娜管永王真魏哲彭程
Owner SHANDONG INOV POLYURETHANE
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