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High strength heat resistant modified polyurethane composite material

A heat-resistant modification and composite material technology, applied in the field of polyurethane, can solve the problems of poor heat resistance and decreased mechanical properties, and achieve the improvement of flame retardancy and medium resistance, heat resistance and weather resistance, and strength. Effect

Inactive Publication Date: 2016-07-20
CHUZHOU GLOBAL POLYURETHANE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane has the disadvantage of poor heat resistance. When used under high temperature conditions, the mechanical properties decrease significantly, which limits the application of polyurethane.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A high-strength heat-resistant modified polyurethane composite material proposed by the present invention, its raw materials include by weight: 100 parts of polyurethane, 40 parts of neoprene rubber, 15 parts of methyl vinyl silicone rubber, 5 parts of stearic acid, zinc oxide 0.5 parts, 1.5 parts of sulfur, MgO2 parts, 18 parts of fumed silica, 5 parts of attapulgite, 15 parts of hollow glass microspheres, 10 parts of polyurethane modified filler, 5 parts of diphenylsilanediol, hexamethyl 2 parts of disilazane, 2 parts of accelerator, 1 part of anti-aging agent;

[0019] Wherein, the polyurethane modified filler is prepared according to the following process: 5 parts by weight of nano-silica and 30 parts of acidified carbon nanotubes are added to 30 parts of toluene, stirred evenly and ultrasonically for 50 minutes to obtain material A; Mix 10 parts of isocyanate-terminated polyurethane prepolymer and 30 parts of toluene uniformly to obtain material B; add 10 parts of ...

Embodiment 2

[0021] A high-strength heat-resistant modified polyurethane composite material proposed by the present invention, its raw materials include by weight: 100 parts of polyurethane, 25 parts of neoprene rubber, 30 parts of methyl vinyl silicone rubber, 3 parts of stearic acid, zinc oxide 2 parts, 0.5 parts of sulfur, 3 parts of MgO, 10 parts of fumed silica, 15 parts of attapulgite, 3 parts of hollow glass microspheres, 20 parts of polyurethane modified filler, 2 parts of diphenylsilanediol, hexamethyl 3.5 parts of disilazane, 0.5 parts of accelerator, 0.3 parts of anti-aging agent 40200, 0.5 parts of anti-aging agent RD, 0.2 parts of anti-aging agent 4010NA, 0.6 parts of anti-aging agent MB, 0.4 parts of anti-aging agent MC;

[0022] Wherein, the polyurethane modified filler is prepared according to the following process: 15 parts by weight of nano-silica and 10 parts of acidified carbon nanotubes are added to 80 parts of toluene, stirred evenly and ultrasonically for 20 minutes t...

Embodiment 3

[0024] A high-strength heat-resistant modified polyurethane composite material proposed by the present invention, its raw materials include by weight: 100 parts of polyurethane, 28 parts of neoprene rubber, 27 parts of methyl vinyl silicone rubber, 3.8 parts of stearic acid, zinc oxide 1.8 parts, 0.9 parts of sulfur, 2.7 parts of MgO, 12 parts of fumed silica, 11 parts of attapulgite, 7 parts of hollow glass microspheres, 18 parts of polyurethane modified filler, 3.2 parts of diphenylsilanediol, six 3.2 parts of methyldisilazane, 0.6 parts of accelerator DM, 0.4 parts of accelerator H, 40201.8 parts of anti-aging agent;

[0025] Wherein, the molar fraction of vinyl in the methyl vinyl silicone rubber is 0.3%;

[0026] The specific surface area of ​​the fumed white carbon black is 230m 2 / g;

[0027] The polyurethane modified filler is prepared according to the following process: 11 parts by weight of nano-silica and 16 parts of acidified carbon nanotubes are added to 70 part...

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Abstract

The invention discloses a high strength heat resistant modified polyurethane composite material. The material comprises the following raw materials in parts by weight: 100 parts of polyurethane, 25 to 40 parts of chloroprene rubber, 15 to 30 parts of methyl vinyl silicone rubber, 3 to 5 parts of stearic acid, 0.5 to 2 parts of zinc oxide, 0.5 to 1.5 parts of sulfur, 2 to 3 parts of MgO, 10 to 18 parts of fume colloidal silica, 5 to 15 parts of attapulgite, 3 to 15 parts of hollow glass micro-beads, 10 to 20 parts of polyurethane modified filler, 2 to 5 parts of diphenyl silanediol, 2 to 3.5 parts of hexamethyl disilazane, 0.5 to 2 parts of an accelerant and 1 to 2 parts of an antiager. The high strength heat resistant modified polyurethane composite material is high in strength, excellent in heat resistance and long in service life.

Description

technical field [0001] The invention relates to the technical field of polyurethane, in particular to a high-strength heat-resistant modified polyurethane composite material. Background technique [0002] Polyurethane is a general term for compounds containing urethane groups in the molecule. More broadly speaking, in addition to urethane-based compounds, it also includes isocyanate compounds such as urea groups, allophanate groups, and biuret groups. All derived polymers. As a high-strength, tear-resistant, wear-resistant polymer material, polyurethane resin has been used as rollers, conveyor belts, hoses, auto parts, shoe soles, synthetic leather, wires and cables, and medical artificial organs, etc. field. However, polyurethane has the disadvantage of poor heat resistance, and when it is used under high temperature conditions, its mechanical properties drop significantly, thus limiting the application of polyurethane. Contents of the invention [0003] Based on the t...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L11/00C08L83/07C08K13/06C08K9/08C08K3/36C08K3/34C08K7/28C08K7/24
CPCC08L75/04C08K2201/006C08K2201/011C08K2201/014C08L2201/02C08L2201/08C08L2203/18C08L2203/202C08L2205/03C08L11/00C08L83/04C08K13/06C08K9/08C08K3/36C08K3/346C08K7/28C08K7/24
Inventor 龚文祥
Owner CHUZHOU GLOBAL POLYURETHANE TECH CO LTD
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