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High-efficiency flame-retardant slow-resilient polyurethane sponge and preparation method thereof

A polyurethane sponge and slow rebound technology, applied in the field of sponge products, can solve the problems of high difficulty of flame retardant effect, poor air permeability of slow rebound, affecting the flame retardant effect, etc., to reduce material cost, efficient flame retardant effect, good physical performance effect

Active Publication Date: 2017-05-31
GLORY HOME FURNISHING JIAXING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, due to the special structure and molecular weight of slow rebound, it is much more difficult to achieve the flame retardant effect of BS5852 than ordinary cotton and high resilience sponge, and the air permeability of slow rebound is also affected by the molecular structure, which is worse than that of ordinary cotton. , and the air permeability effect will directly affect the flame retardant effect

Method used

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  • High-efficiency flame-retardant slow-resilient polyurethane sponge and preparation method thereof
  • High-efficiency flame-retardant slow-resilient polyurethane sponge and preparation method thereof
  • High-efficiency flame-retardant slow-resilient polyurethane sponge and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0031] The preparation method of high-efficiency flame-retardant slow-rebound polyurethane sponge adopts the following steps:

[0032] (1) Weigh polyether polyols and polymer polyols in parts by weight, the total number of parts is 100 parts, add 0.5 parts-3.0 parts of foam stabilizers, catalysts 0.1 parts-1.0 parts, expandable graphite 5 parts- 30 parts, liquid flame retardant 10-20 parts, liquid reactive flame retardant 0-15 parts, foaming agent 1.0-4.0 parts, alcohol amine chain extender 0.5-3.0 parts, melamine 0-20 parts , carry out high-speed stirring at room temperature with a stirring speed of 2000r / min-4000r / min to obtain a reaction mixture;

[0033] (2) Introduce 30-70 parts of modified MDI into the above reaction mixture, stir at a high speed at 20°C-25°C and react for 5s-10s, then introduce into the prepared mold and mature at room temperature to obtain a high-efficiency resistance Combustible slow rebound polyurethane sponge products.

[0034] When the above-ment...

Embodiment approach 1

[0036] The formula of high-efficiency flame-retardant polyurethane sponge has the following raw materials in parts by weight:

[0037]

[0038]

[0039] The foam stabilizer preferably adopts L-658 of Momentive High-tech Materials Co., Ltd., and this silicone oil has certain flame retardant properties, and is more suitable for the present invention.

[0040] The preparation method of the above-mentioned high-efficiency flame-retardant polyurethane sponge adopts the following steps:

[0041] (1) Take by weight 50 parts of polyether polyols with a molecular weight of 1000, 30 parts of polymer polyols, and 20 parts of polyether polyols with a molecular weight of 4800, the total number of parts is 100 parts, and continue to add foam stabilizers 1.6 parts, 0.7 parts of catalyst, 10 parts of expandable graphite, 20 parts of liquid flame retardant, 10 parts of liquid reactive flame retardant, 2 parts of foaming agent, 2 parts of alcohol amine chain extender, at room temperature ...

Embodiment approach 2

[0045] The formula of high-efficiency flame-retardant polyurethane sponge has the following raw materials in parts by weight:

[0046]

[0047]

[0048] The foam stabilizer preferably adopts L-658 of Momentive High-tech Materials Co., Ltd., and this silicone oil has certain flame retardant properties, and is more suitable for the present invention.

[0049] The preparation method of the above-mentioned high-efficiency flame-retardant polyurethane sponge adopts the following steps:

[0050] (1) Take by weight 50 parts of polyether polyols with a molecular weight of 1000, 30 parts of polymer polyols, and 20 parts of polyether polyols with a molecular weight of 5000, the total number of parts is 100 parts, and continue to add foam stabilizers 1.3 parts, 0.7 parts of catalyst, 20 parts of expandable graphite, 20 parts of liquid flame retardant, 10 parts of liquid reactive flame retardant, 1.8 parts of foaming agent, 2 parts of alcohol amine chain extender, at room temperatur...

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Abstract

The invention relates to the field of sponge products, and in particular to slow-resilient polyurethane sponge and a preparation method. The high-efficiency flame-retardant slow-resilient polyurethane sponge is prepared from the following raw materials in parts by weight: on the basis of 100 parts of two types of polyether glycol and one polymer polycol, 30 to 70 parts of modified MDI, 0.5 to 3.0 parts of foam stabilizer, 0.1 to 1 part of catalysts, 1.0 to 4.0 parts of foaming agents, 0.5 to 3.0 parts of alcohol amine chain extender, 0 to 20 parts of melamine, 5 to 30 parts of expandable graphite, 10 to 20 parts of liquid flame retardant, and 0 to 15 parts of liquid reaction flame retardant. The expandable graphite is used as a solid flame retardant to be added into a slow-resilient polyurethane sponge system, so that the consumption of the liquid flame retardant is reduced, the flame retardant performance of the slow-resilient sponge is greatly improved, and the physical performance is good.

Description

technical field [0001] The invention relates to the field of sponge products, in particular to a slow-rebound polyurethane sponge and a preparation method. Background technique [0002] Due to its "slow rebound" characteristics, commonly known as "memory sponge", the slow rebound polyurethane material has the advantages of excellent shock absorption performance and uniform surface pressure distribution, and has received widespread attention in the home furnishing industry. However, as a kind of polyurethane flexible foam, it still has flammable characteristics, which limits its safe use. [0003] The addition of flame retardants is an effective way to improve the flame retardant performance of polyurethane foam. At present, the flame retardants added to slow rebound polyurethane flexible foam are mainly solid-added flame retardant melamine and liquid-added phosphate flame retardants, etc. . However, there are some problems with traditional flame retardants at present. For ...

Claims

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Application Information

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IPC IPC(8): C08G18/65C08G18/66C08G18/40C08G18/48C08G18/63C08K5/3492C08K7/24C08K13/04C08J9/08C08G101/00
CPCC08G18/4072C08G18/4804C08G18/4833C08G18/632C08G18/657C08G18/6688C08K5/34922C08K7/24C08K13/04C08G2110/0083
Inventor 丘国豪李婷邓宣晖
Owner GLORY HOME FURNISHING JIAXING
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