Preparation method of high-slip-resistance low-wear thermoplastic polyurethane elastomer

A thermoplastic polyurethane, low-wear technology, applied in the field of polyurethane elastomer preparation, can solve the problem of wear resistance not meeting the needs of special occasions, and achieve the best effect of reducing wear and meeting the needs.

Pending Publication Date: 2019-08-23
苏州奥斯汀新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a high anti-slip and low wear thermoplastic polyurethane elastomer to solve the problem that the wear resistance of polyurethane elastomers in the prior art does not meet the needs of special occasions

Method used

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  • Preparation method of high-slip-resistance low-wear thermoplastic polyurethane elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 500 g of polyols prepared by tetrahydrofuran ring-opening polymerization, 10 g of a mixture of molybdenum disulfide and methyl silicone oil, and tetrakis (4-hydroxy-3,5-tert-butylphenylpropionic acid) into a 2-liter 90°C reactor. ) 0.5g of pentaerythritol ester, vacuumized and dehydrated, keeping the vacuum at -0.098MPa, kept for 1 hour to form a modified polyol;

[0028] SiO 2 Put it in an oven in advance and activate it at 100°C to get activated SiO 2 (P-SiO 2 ), the 6g P-SiO 2 Place in a three-necked flask, add an appropriate amount of toluene, stir quickly to make it evenly dispersed, add isocyanate-toluene solution drop by drop under nitrogen protection, add 4 to 5 drops of dibutyltin dilaurate, and stir at 80°C for 10 hours , filtered with suction, washed with toluene to remove the unreacted isocyanate adsorbed on the surface, and the filtrate was titrated according to the ISO 14896-2009 standard until there was no isocyanate in the filtrate, and the filter...

Embodiment 2

[0032] Add 500 g of polyols prepared by tetrahydrofuran ring-opening polymerization, 15 g of a mixture of molybdenum disulfide and methyl silicone oil, and tetrakis (4-hydroxy-3,5-tert-butylphenylpropionic acid) into a 2-liter 95 ° C reactor. ) 1g of pentaerythritol ester, vacuumized and dehydrated, keeping the vacuum at -0.099MPa, kept for 2 hours to form a modified polyol;

[0033] SiO 2 Put it in an oven in advance and activate it at 100°C for 4 hours to obtain activated SiO 2 (P-SiO 2 ); the 6g P-SiO 2 Place in a three-necked flask, add an appropriate amount of toluene, stir rapidly to distribute it evenly, add isocyanate-toluene solution drop by drop under nitrogen protection, add 4 to 5 drops of dibutyltin dilaurate, and stir at 80°C for 10 hours. , filtered with suction, washed with toluene to remove the unreacted isocyanate adsorbed on the surface, and the filtrate was titrated according to the ISO 14896-2009 standard until there was no isocyanate in the filtrate, a...

Embodiment 3

[0037] Add 500 g of polyols prepared by tetrahydrofuran ring-opening polymerization, 5 g of a mixture of molybdenum disulfide and methyl silicone oil, and tetrakis (4-hydroxy-3,5-tert-butylphenylpropionic acid) into a 2-liter 90 ° C reactor. 0.3g of pentaerythritol ester, vacuum dehydration, keep the vacuum at -0.1MPa, and keep warm for 1.5 hours to form a modified polyol;

[0038] SiO 2 Put it in an oven in advance and activate it at 100°C for 5 hours to obtain activated SiO 2 (P-SiO 2 ); the 6g P-SiO 2 Place in a three-necked flask, add an appropriate amount of toluene, stir quickly to make it evenly dispersed, add isocyanate-toluene solution drop by drop under nitrogen protection, add 4 to 5 drops of dibutyltin dilaurate, and stir at 80°C for 10 hours , filtered with suction, washed with toluene to remove the unreacted isocyanate adsorbed on the surface, and the filtrate was titrated according to the ISO 14896-2009 standard until there was no isocyanate in the filtrate, ...

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Abstract

The invention relates to a preparation method of a high-slip-resistance low-wear thermoplastic polyurethane elastomer. The method comprises the following steps: adding a polyol, molybdenum disulfide,methyl silicone oil and an antioxidant into a reaction kettle, and performing vacuum dehydration to form a modified polyol; putting SiO2 into an oven, performing activation to obtain P-SiO2, placing the P-SiO2 into a three-necked flask, adding an appropriate amount of toluene, performing stirring, adding an isocyanate-toluene solution under the protection of a nitrogen gas, adding a catalyst dropwise, performing a reaction, performing suction filtration, performing washing by using toluene, and drying the filter cake in a vacuum drying oven to obtain isocyanated SiO2; and separately heating the isocyanated SiO2 and a chain extender, mixing the heated isocyanated SiO2, the heated chain extender, the modified polyol and a catalyst, allowing the mixture to enter a twin-screw extruder, and performing an extrusion reaction to obtain the high-slip-resistance low-wear thermoplastic polyurethane elastomer. According to the preparation method provided by the invention, the thermoplastic polyurethane elastomer obtained by the preparation method has high slip resistance and low wear performance, and can meet the needs of cable materials in special occasions.

Description

technical field [0001] The invention relates to the technical field of polyurethane elastomer preparation, in particular to a preparation method of a high anti-slip and low wear thermoplastic polyurethane elastomer. Background technique [0002] The use environment of the cable is very complicated, and the service life is required to reach more than 10 years. Among them, the thermoplastic polyurethane elastomer (TPU) sheathed cable has excellent mechanical and physical properties such as high and low temperature resistance, environmental crack resistance, wear resistance, and oil resistance. It is widely used in exploration, petroleum and other fields. [0003] In general applications, the wear resistance of TPU itself is good enough, but in special occasions such as dry grinding conditions, especially at high speed and high load strength, due to the high hysteresis and the resulting internal heat generation on the surface, this This thermal effect causes the local or micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L83/04C08K3/30C08K9/04C08K3/36C08K5/134C08G18/66C08G18/48C08G18/32
CPCC08L75/08C08G18/6674C08G18/4854C08G18/3206C08K2003/3009C08L83/04C08K3/30C08K9/04C08K3/36C08K5/1345
Inventor 汪泽恒周述明邓春艳余鹏飞杨向宏
Owner 苏州奥斯汀新材料科技有限公司
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