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Flame-retardant polyurethane elastomer and its preparation method and application

A polyurethane elastomer and flame-retardant technology, which is applied in the field of flame-retardant polyurethane elastomer and its preparation, can solve the problems that the research on the flame-retardant and smoke-suppressing properties of mixing-type polyurethane elastomer materials has not been reported, and achieve excellent The effect of low smoke characteristics, wide source, and excellent flame retardancy

Active Publication Date: 2021-03-02
GUANGZHOU SHUNLI POLYURETHANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, no research has been reported on the flame retardancy and / or smoke suppression properties of millable polyurethane elastomer materials

Method used

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  • Flame-retardant polyurethane elastomer and its preparation method and application

Examples

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Effect test

preparation example Construction

[0087] In a second aspect, a method for preparing the above-mentioned flame-retardant polyurethane elastomer is provided, comprising the following steps:

[0088] Mix the raw materials in the formula quantity evenly, and then carry out banburying and kneading to obtain the mixture;

[0089] The mixture is vulcanized and foamed to obtain the flame-retardant polyurethane elastomer.

[0090] Preferably, each raw material in the formulation amount is mixed uniformly in a high-speed mixer.

[0091] The above preparation method has simple operation, easy control of the preparation process, high production efficiency, and good quality stability of the prepared product, which is suitable for large-scale industrial production.

[0092] In a preferred embodiment, the banburying temperature is 70-100°C, and the time is 4-16 minutes;

[0093] Preferably, the temperature for kneading is 50-70°C, and the time is 3-10 minutes;

[0094] Preferably, the vulcanization temperature is 170-210°...

Embodiment 1

[0103] A flame-retardant polyurethane elastomer is mainly prepared from the following raw materials in parts by weight:

[0104] 60 parts of polyether type mixing type unsaturated polyurethane raw rubber, 25 parts of vulcanization system, 30 parts of halogen-free flame retardant ammonium phosphate, 12 parts of smoke suppressant ferric oxide, antioxidant tetrakis [methylene-3, 3', 5-(di-tert-butyl-4-hydroxy-phenyl) propionate] pentaerythritol ester 0.5 parts, anti-aging agent N-phenyl-α-aniline 0.5 parts, stabilizer zinc stearate 0.6 parts, anti-aging agent 0.8 parts of hydrolyzing agent carbodiimide, 0.5 parts of anti-rodent masterbatch, 0.5 part of anti-termite masterbatch and 1 part of foaming agent azodicarbonamide;

[0105] Wherein, the vulcanization system includes the following components in parts by weight:

[0106] 100 parts of unsaturated polyurethane raw rubber, 1 part of stearic acid, 1 part of zinc stearate, 10 parts of carbon black, 20 parts of precipitated silic...

Embodiment 2

[0108] A flame-retardant polyurethane elastomer is mainly prepared from the following raw materials in parts by weight:

[0109]100 parts of polyether mixing type unsaturated polyurethane raw rubber, 40 parts of vulcanization system, 70 parts of ammonium phosphate, halogen-free flame retardant, 25 parts of iron sesquioxide, anti-oxidant tetrakis [methylene-3, 3', 5-(di-tert-butyl-4-hydroxy-phenyl) propionate] pentaerythritol ester 1.5 parts, anti-aging agent N-phenyl-α-aniline 1.5 parts, stabilizer zinc stearate 1.8 parts, anti-aging agent 1.8 parts of hydrolyzing agent carbodiimide, 3 parts of anti-rodent masterbatch, 3 parts of anti-termite masterbatch and 6.5 parts of foaming agent azodicarbonamide;

[0110] Wherein, the vulcanization system is the same as in Example 1.

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Abstract

The invention belongs to the technical field of polymer materials, and relates to a flame-retardant polyurethane elastomer and a preparation method and application thereof. The flame-retardant polyurethane elastomer provided by the present invention is mainly prepared from the following raw materials in parts by weight: 10-100 parts of unsaturated polyurethane raw rubber, 5-50 parts of vulcanization system, 5-80 parts of halogen-free flame retardant, smoke suppression 1-30 parts of antioxidant, 0.01-2 parts of antioxidant, 0.01-2 parts of anti-aging agent, 0.01-2 parts of stabilizer, 0.01-2 parts of anti-hydrolysis agent, 0.01-4 parts of anti-rat masterbatch, 0.01 part of anti-termite masterbatch ~4 parts and 0.01~8 parts of blowing agent. The polyurethane elastomer has excellent flame retardancy and low smoke characteristics, good processability and excellent mechanical properties, is safe, non-toxic, green and environmentally friendly, and has a long service life.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant polyurethane elastomer and its preparation method and application. Background technique [0002] Polyurethane elastomer refers to a type of elastomer polymer containing more carbamate functional groups (NH-CO-O-) on the main chain of the macromolecule. It is a typical multi-block copolymer with wear resistance. Good, wide hardness range, high strength, high elongation, large load support capacity, good shock absorption effect, low temperature resistance and excellent oil and weather resistance. According to different processing methods, polyurethane elastomers can generally be divided into thermoplastic polyurethane elastomers (TPU), cast polyurethane elastomers (CPU) and mixing polyurethane elastomers (MPU). Among them, the mixing type polyurethane elastomer has good wear resistance, mechanical properties, oil resistance and aging resista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/14C08L45/02C08L91/06C08K13/02C08K5/09C08K5/098C08K3/04C08K3/36C08K3/22C08K5/134C08K5/18C08K5/526C08K5/20C08J9/10C08J9/14
CPCC08J9/0023C08J9/0028C08J9/0061C08J9/0066C08J9/103C08J9/105C08J9/107C08J9/141C08J9/146C08J2203/04C08J2203/14C08J2203/184C08J2375/14C08J2445/02C08J2475/14C08J2491/06C08K3/04C08K3/36C08K5/09C08K5/098C08K5/1345C08K5/18C08K5/20C08K5/526C08K13/02C08K2003/2272C08K2003/2296
Inventor 李斌
Owner GUANGZHOU SHUNLI POLYURETHANE TECH
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