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Reactive halogen-free organic phosphate ester flame retardant and flame-retardant polyurethane elastomer

A technology of polyurethane elastomer and organic phosphate, which is applied in the field of flame retardant materials, can solve the problems of disappearance, decrease of flame retardant performance, discount of mechanical properties of polyurethane elastomer, etc., and achieve the effect of easy-to-obtain raw materials and simple synthesis method

Inactive Publication Date: 2012-07-11
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the compatibility of the powder, the mechanical properties of polyurethane elastomers will be greatly reduced, and the general liquid-added flame retardants will move out of polyurethane with time, and the flame retardant properties will continue to decline or even disappear.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The proportion is BBHP: 4,4 binary alkane methane diocyanate (MDI): 1,4-butanol: polyether polyol = 6: 41: 7: 52.After BBHP mixes uniformly with polyether polyol and 1,4-butanol, pour out when it is mixed with MDI at 80 ° C -100 ° C to 130-150 ° C, and delivered to 150-170 ° C baked 10-20min.It is solid, and the room temperature is cooked 22-26h.The cooked white block is pushed into small blocks into small pieces.Then squeeze the polyurethane (underwater) to obtain a transparent chip-shaped small solid, that is, polyurethane elastomer, vertical combustion reaches 94V-0, oxygen index is 26, 100%tension stress is 9.02MPa, and the stretch strength is 15.58MPA has an extension of 274%, the torn strength is 57.42MPa, and the Shaw Hardness A is 87.

Embodiment 2

[0019] The proportion is BBHP: 4,4 binary alkane methane diocyanate (MDI): 1,4-butanol: polyether polyol = 8: 41: 7: 52.After BBHP mixes uniformly with polyether polyol and 1,4-butanol, pour out when it is mixed with MDI at 80 ° C -100 ° C to 130-150 ° C, and delivered to 150-170 ° C baked 10-20min.It is solid, and the room temperature is cooked 22-26h.The cooked white block is pushed into small blocks into small pieces.Then squeeze the polyurethane (cutting granules underwater) to obtain a transparent chip-shaped small solid, that is, polyurethane elastomer, vertical combustion reaches 94V-0, oxygen index is 27, 100%tension stress is 8.82MPa, and the stretch strength is 15.19MPA, the elongation rate is 255%, the torn strength is 59MPa, and the Shaw's hardness A is 86.

Embodiment 3

[0021] The proportion is BBHP: 4,4 binary alkane methane diocyanate (MDI): 1,4-butanol: polyether polyol = 10: 41: 7: 52.After BBHP mixes uniformly with polyether polyol and 1,4-butanol, pour out when it is mixed with MDI at 80 ° C -100 ° C to 130-150 ° C, and delivered to 150-170 ° C baked 10-20min.It is solid, and the room temperature is cooked 22-26h.The cooked white block is pushed into small blocks into small pieces.Then squeeze the polyurethane (cutting granules underwater) to obtain a transparent chin-shaped small solid, that is, polyurethane elastomer, vertical combustion reaches 94V-0, oxygen index is 28, 100%tension stress is 8.53MPa, stretching strength is 14.7MPA has an elongation of 236%, the torn strength is 59.49MPa, and the Shaw Hardness A is 85.

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Abstract

The invention discloses a reactive halogen-free organic phosphate ester flame retardant, a flame-retardant polyurethane elastomer and a preparation method thereof. The flame retardant BBHP is prepared with butanol, phosphorus oxychloride and 1, 4-butanediol. The BBHP is then mixed with 1, 4-butanediol and polyether polyol and reacts with MDI (isocyanate) to prepare the flame-retardant polyurethane elastomer. The invention has the advantages that raw materials are inexpensive and can be obtained easily, the operation is simple, the solvent needs not to be recycled, the subsequent treatment is easy, and the production cost is low. The method is an effective method for preparation of permanently flame-retardant polyurethane elastomers and has significant economic and social benefits.

Description

Technical field [0001] The invention is the field of flame retardant materials, which involves a reactive type of halogen -free organic phosphate flame retardant and its flame retardant polyurethane elastic body and preparation method. Background technique [0002] Polyurethane is one of the six major synthetic materials in the world.The thermoplastic polyurethane elastic body (referred to as TPU) has characteristics of good abrasion resistance, wide range of hardness, high strength and high elongation rate, large loading capacity, good shock absorption effect, excellent oil resistance, etc.Synthetic materials are known as "third -generation synthetic rubber" and are widely used for protective coatings, sealing pads, soles, tires, textile fibers, sporting goods, automotive plastic, semi -transparent plastic film, wound dressing and biomass. [0003] TPU is a kind of combustible polymer. After burning, it releases toxic gases such as HCN and CO, which can easily cause people to su...

Claims

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Application Information

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IPC IPC(8): C08K5/521C08L75/08C08G18/66C08G18/48C08G18/38C08G18/32
Inventor 郑玉婴
Owner FUZHOU UNIVERSITY
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