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Graphite-doped composite polyurethane material

A composite polyurethane and graphite technology, applied in the field of polyurethane materials, can solve the problems of high cost, death, casualties, etc., and achieve the effect of increasing wear resistance and flame retardancy

Inactive Publication Date: 2013-07-24
ANHUI FANGYUAN PLASTIC & RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polyurethane materials used to make the screens of mineral processing equipment are extremely wear-resistant due to the use conditions, and the processing is difficult, resulting in high cost; the polyurethane used for various thermal insulation and waterproof outer packaging materials, although it can It plays a good role in waterproofing and heat preservation, but it will burn once it encounters fire, and once the polyurethane material is burned, it will produce a gas containing highly toxic hydrogen cyanide, and people will die if they inhale it, so it not only causes property damage also cause casualties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Based on 4,4'-diphenylmethane diisocyanate, 100 parts of isocyanate modified by urethane method, 10 parts of catalyst mixture, graphite 10 parts of the mixture and 10 parts of the flame retardant mixture are mixed and quickly stirred and injected into the mold.

[0024] said

[0025] (1. Polyol mixture includes:

[0026] Polyether polyol A containing two hydroxyl functional groups with a hydroxyl value of 40--800 mgKOH / g 5%--10%

[0027] Polyether polyol B containing three hydroxyl functional groups with a hydroxyl value of 300--800 mgKOH / g 5%--70%

[0028] Polyether polyol C with six hydroxyl functional groups and a hydroxyl value of 300--800 mgKOH / g 5%--50%

[0029] Polyester polyol D with hydroxyl value of 300--800 mgKOH / g containing benzene ring hydroxyl functional group 5%--20%

[0030] Hydroxyl value 300--800 mgKOH / g Rosin resin E 5%--20%,

[0031] 2. Isocyanate includes isocyanate modified by urethane method based on crude 4,4'-diphenylmethane diisocyanate (...

Embodiment 2

[0036] A composite polyurethane material doped with graphite, which is made from the raw material of following parts by weight (kg):

[0037] polyol mixture 45

[0038] Isocyanate 55

[0039] Graphite mixture 10

[0040] Catalyst mixture 6

[0041] Flame retardant mixture 7 .

[0042] The polyol mixture is polyester polyol with ethylene glycol as the starting agent, the hydroxyl value is 40--100 mgKOH / g, and the acid value is 0.01--1.04 mgKOH / g;

[0043] The isocyanate is crude 4,4'-diphenylmethane diisocyanate.

[0044] The graphite mixture includes nano-graphite with a particle size of 10-80 nm and micro-graphite with a particle size of 2-200 μm;

[0045] The catalyst mixture package is formed by mixing an amine catalyst and an organotin catalyst in a ratio of 0.8:1.

[0046] The flame retardant mixture is formed by mixing a brominated flame retardant and a phosphoric ester flame retardant in a ratio of 1:1.

[0047] The amine catalyst is obtained by mixing triethylam...

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PUM

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Abstract

The invention discloses a graphite-doped composite polyurethane material. The material is prepared from the following raw materials in parts by weight: 5-15 parts of graphite mixture, 0.01-10 parts of catalyst mixture, 5-20 parts of flame retardant, 90-120 of mixture of polyol mixture and isocyanate or 90-110 of isocyanate modified by adopting polyester polyol with 40-1000 mgKOH / g hydroxyl value of two hydroxy functional groups on the basis of 4,4-methyl diphenylene diisocyanate through using an amine ester method. The material can be used for not only increasing the abrasion resistance of polyurethane, but also improving the flame retardant performance of the polyurethane material and achieving the purpose of abrasion resistance and flame retardancy.

Description

technical field [0001] The invention relates to the field of polyurethane materials, in particular to a composite polyurethane material doped with graphite. Background technique [0002] Polyurethane is a polymer material between plastic and rubber, known as "wear-resistant rubber". It is often used to make polyurethane screens for mineral processing equipment, various thermal insulation and waterproof outer packaging materials, and related fields. However, the existing polyurethane materials used to make the screens of mineral processing equipment are extremely wear-resistant due to the use conditions, and the processing is difficult, resulting in high cost; the polyurethane used for various thermal insulation and waterproof outer packaging materials, although it can It plays a good role in waterproofing and heat preservation, but it will burn once it encounters fire, and once the polyurethane material is burned, it will produce a gas containing highly toxic hydrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K3/04C08G18/78C08G18/48C08G18/42
Inventor 程尧王磊武京明
Owner ANHUI FANGYUAN PLASTIC & RUBBER