Thermoplastic organosilicon polyurethane elastomer material and preparation method thereof

A technology of polyurethane elastomer and silicone, which is applied in the field of polyurethane elastomer, can solve the problems of easy migration of silicone, and achieve the effects of improving various performances, high reactivity, and simple operation

Inactive Publication Date: 2019-11-19
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Patent CN201510740025X discloses a silicone-modified thermoplastic polyurethane elastomer and its preparation method, using macromolecular diol, hydroxyalkyl-terminated polydimethylsiloxane, diisocyanate, small molecule chain extender, Catalysts, antioxidants, and ultraviolet absorbers are used to synthesize polyurethane elastomers, which enhance the high and low temperature resistance and hydrophobicity of polyurethane elastomers; however, without compatibilizers, silicones are easy to migrate

Method used

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  • Thermoplastic organosilicon polyurethane elastomer material and preparation method thereof
  • Thermoplastic organosilicon polyurethane elastomer material and preparation method thereof
  • Thermoplastic organosilicon polyurethane elastomer material and preparation method thereof

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Effect test

Embodiment 1

[0028] In terms of parts by mass, 78.85 parts of polyethylene adipate butylene glycol ester diol (PEBA, M=3000), 3 parts of single-ended difunctional group-terminated hydroxyalkylsiloxane-polyester compound (molecular weight 1000 , the siloxane content is 80%), 0.8 parts of silane coupling agent KH-550, 0.4 parts of main antioxidant 1076, 0.2 parts of auxiliary antioxidant 168, add in reactor A, keep the temperature at 100 ° C; 15.96 parts of MDI -100 was added to Reactor B, keeping the temperature at 70°C; 3.75 parts of 1,4-butanediol was added to Reactor C, keeping the temperature at 50°C; the isocyanate index was controlled at 1.005. After the temperature of each reactor is stabilized, the raw material components in Reactor A, Reactor B and Reactor C are mixed through a high-speed rotating mixing head through the infusion system with precise metering, and injected into the twin-screw extruder. Add 0.04 part of bismuth isooctanoate catalyst to the feeding port of the screw e...

Embodiment 2

[0030] In terms of parts by mass, 59.39 parts of polybutylene adipate diol (PBA, M=3000), 5 parts of double-ended difunctional group-terminated hydroxyalkylsiloxane-polyether compound (molecular weight 4000, silicone The alkane content is 95%), 0.5 parts of silane coupling agent KH-560, 0.2 parts of main antioxidant 1010, 0.2 parts of auxiliary antioxidant 168, add in reactor A, keep the temperature at 100 ° C; add 26.94 parts of MDI-100 In reactor B, keep the temperature at 70°C; add 7.74 parts of 1,4-butanediol into reactor C, keep the temperature at 50°C; control the isocyanate index at 1.005. After the temperature of each reactor is stabilized, the raw material components in Reactor A, Reactor B and Reactor C are mixed through a high-speed rotating mixing head through the infusion system with precise metering, and injected into the twin-screw extruder. 0.03 parts of bismuth neodecanoate catalyst is added to the feed port of the screw extruder through a micro-injection pump...

Embodiment 3

[0032]In terms of parts by mass, 44.58 parts of polytetramethylene ether glycol (PTMG, M=1000), 15 parts of double-ended difunctional group-terminated hydroxyalkylsiloxane-polyether compounds (molecular weight 2000, siloxane content 50%), 0.2 parts of silane coupling agent KH-560, 0.2 parts of primary antioxidant 1010, 0.1 part of auxiliary antioxidant DLTP, add to reactor A, keep the temperature at 100 ° C; add 32.61 parts of MDI-100 to the reactor In B, keep the temperature at 70°C; add 7.11 parts of 1,4-butanediol into reaction kettle C, keep the temperature at 50°C; control the isocyanate index at 1.005. After the temperature of each reactor is stabilized, the raw material components in Reactor A, Reactor B and Reactor C are mixed through a high-speed rotating mixing head through the infusion system with precise metering, and injected into the twin-screw extruder. Add 0.02 parts of bismuth laurate catalyst to the feeding port of the screw extruder through a micro-injection...

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Abstract

The invention specifically relates to a thermoplastic organosilicon polyurethane elastomer material and a preparation method thereof, belonging to the technical field of polyurethane elastomers. The thermoplastic organosilicon polyurethane elastomer material is composed of the following raw materials by mass: 44 to 79 parts of polymer polyol, 3 to 15 parts of an organosilicon modifier, 16 to 33 parts of diisocyanate, 4 to 7.8 parts of a chain extender, 0.1 to 1 part of a coupling agent, 0.2 to 0.6 part of an antioxidant and 0.02 to 0.04 part of a catalyst, wherein the organosilicon modifier isa siloxane-polyester compound with a hydroxyalkyl group as a terminal functional group or a siloxane-polyether compound with a hydroxyalkyl group as a terminal functional group. The thermoplastic organosilicon polyurethane elastomer material of the invention has improved low-temperature flexibility, water resistance, smoothness, tear resistance and other properties, and overcomes the problem of organosilicon migration. The preparation method provided by the invention is simple in process and easy to operate.

Description

technical field [0001] The invention relates to the technical field of polyurethane elastomers, in particular to a thermoplastic organosilicon polyurethane elastomer material and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer, referred to as TPU, is a linear block copolymer composed of oligomer polyol soft segment and diisocyanate-chain extender hard segment. It has high mechanical strength, good toughness, excellent wear resistance and oil resistance. With the advent of the era of smart electronics, in the field of wearable electronic products and other materials that are in direct contact with the human body, their application scope is greatly limited due to their poor weather resistance and insufficient aging resistance. Silicone materials have many excellent properties such as good low temperature resistance, good weather resistance, and strong flexibility. The performance advantages of the two materials can be obtained ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/12C08G18/40C08G18/42C08G18/46C08G18/48C08G18/50C08G18/32
CPCC08G18/12C08G18/4018C08G18/4202C08G18/4238C08G18/4692C08G18/4804C08G18/4854C08G18/5096C08G18/6607C08G18/664C08G18/3206
Inventor 陈海良宋小娜陈淑海刘凯良贺宽宽
Owner SHANDONG INOV POLYURETHANE
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