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Halogen-free flame-retarding sponge and preparation method thereof

A technology of sponge and flame retardant, applied in the field of sponge materials, can solve the problems of poor physical and mechanical properties of foam, foam collapse, cracking, etc., and achieve the effects of improving flame retardant performance, improving fire resistance and reducing oxygen content

Inactive Publication Date: 2019-03-22
中山市宝龙海绵制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A large number of experiments have proved that most flame retardants will cause foam collapse, shrinkage or cracking during the foaming process, and only a few flame retardants can be used, and these flame retardants have no flame retardant effect when added alone. Not significant, and the physical and mechanical properties of the resulting foam are poor
At the same time, due to the use of more bromine-containing flame retardants, the toxicity of foam combustion smoke is also relatively high

Method used

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  • Halogen-free flame-retarding sponge and preparation method thereof
  • Halogen-free flame-retarding sponge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of Halogen-free Flame Retardant Sponge

[0024] Raw materials: 42 parts of white oil, 58 parts of polyether polyol, 35 parts of toluene diisocyanate, 2.4 parts of water, 0.21 parts of catalyst 33LV, 0.20 parts of catalyst T-9, 1.25 parts of silicone oil, 12 parts of halogen-free flame retardant.

[0025] Preparation steps:

[0026] (1) Under the condition that the foam stabilizer keeps reflux, add polyether polyol, white oil, and halogen-free flame retardant according to the proportion, inject nitrogen and mix and stir to make component A;

[0027] (2) Quickly mix water, catalyst, toluene diisocyanate and component A uniformly, pour into a mold, and obtain foam molding.

[0028] The preparation process is carried out under the conditions of a constant temperature of 22° C. and a humidity of 60%.

Embodiment 2

[0030] Preparation of Halogen-free Flame Retardant Sponge

[0031] Raw materials: 40 parts of white oil, 60 parts of polyether polyol, 32 parts of toluene diisocyanate, 3 parts of water, 0.1 part of catalyst 33LV, 0.3 part of catalyst T-9, 1 part of silicone oil, 15 parts of halogen-free flame retardant.

[0032] Preparation steps:

[0033] (1) Under the condition that the foam stabilizer keeps reflux, add polyether polyol, white oil, and halogen-free flame retardant according to the proportion, inject nitrogen and mix and stir to make component A;

[0034] (2) Quickly mix water, catalyst, toluene diisocyanate and component A uniformly, pour into a mold, and obtain foam molding.

[0035] The preparation process is carried out under the conditions of a constant temperature of 22° C. and a humidity of 60%.

Embodiment 3

[0037] Preparation of Halogen-free Flame Retardant Sponge

[0038] Raw materials: 45 parts of white oil, 55 parts of polyether polyol, 40 parts of toluene diisocyanate, 2 parts of water, 0.3 part of catalyst 33LV, 0.1 part of catalyst T-9, 3 parts of silicone oil, 10 parts of halogen-free flame retardant.

[0039] Preparation steps:

[0040] (1) Under the condition that the foam stabilizer keeps reflux, add polyether polyol, white oil, and halogen-free flame retardant according to the proportion, inject nitrogen and mix and stir to make component A;

[0041] (2) Quickly mix water, catalyst, toluene diisocyanate and component A uniformly, pour into a mold, and obtain foam molding.

[0042] The preparation process is carried out under the conditions of a constant temperature of 22° C. and a humidity of 60%.

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Abstract

The invention discloses a halogen-free flame-retarding sponge and a preparation method thereof. According to the halogen-free flame-retarding sponge, an air foaming technology is replaced by a nitrogen foaming technology, so that the aims of reducing the oxygen content of foam plastic and effectively improving fireproof performance are realized. Meanwhile, a formula design is selected and used, anoptimal formula ratio is determined and the dosage of an inflammable component of polyether polyol is reduced, so that the fireproof performance of polyurethane soft foam plastic is improved in the aspect of a formula technology. By adopting the halogen-free flame-retarding sponge, while the fireproof performance of a product is ensured, physical indexes including tensile strength, impression degree and the like of the product reach the highest requirements, so that the product has high elasticity and is not liable to deform.

Description

technical field [0001] The invention relates to the field of sponge materials, in particular to a halogen-free flame-retardant sponge and a preparation method thereof. Background technique [0002] Flexible polyurethane foam is a new type of polymer material. It is synthesized by polycondensation reaction of toluene diisocyanate (TDI) and polyether polyol. The full name is polyurethane, commonly known as sponge. Because of its small density, good elasticity, sound insulation and shockproof, safe and comfortable ride, convenient molding and construction, cheap price, sufficient strength, oil resistance and bonding ability, it is an excellent heat insulation material, so it is widely used in medical dressings , industrial environment laboratories, building ventilation, air-conditioning ducts, and food industry refrigeration, cold storage (room) as thermal insulation materials, rigid polyurethane foam can also be used for building insulation structures; especially in furniture,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08J9/08C08G101/00
CPCC08G18/48C08G2110/0083
Inventor 张惠章
Owner 中山市宝龙海绵制品有限公司