Slow rebound memory foam and preparation method thereof

A technology of memory foam and slow rebound, which is applied in the field of memory cotton, can solve the problems of not being able to significantly improve softness or air permeability, and achieve the effects of improving softness and air permeability, easy availability of raw materials, and improving softness and air permeability

Active Publication Date: 2020-08-18
上海抚佳精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that when the low-density slow-rebound memory cotton disclosed in the prior art uses methyl formate as a foaming agent, it cannot obviously improve its softness or air permeability; the present invention provides A slow rebound memory cotton that is safe and pollution-free and can significantly improve softness or air permeability and its preparation method

Method used

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  • Slow rebound memory foam and preparation method thereof
  • Slow rebound memory foam and preparation method thereof
  • Slow rebound memory foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of slow rebound memory cotton, its raw material composition is as follows:

[0034] Polyether polyol composition: 100 g. Among them, 70g of hydroxyl-terminated polyether, 15g of slow resilience polyether and 15g of polymer polyol are included. The hydroxyl-terminated polyether is the polyether polyol F3521 produced by Jiahua Chemical Co., Ltd., which is prepared by the copolymerization reaction of glycerol with ethylene oxide and propylene oxide as an initiator. The mass ratio is 3:2, the functionality is 3, the hydroxyl value is 40.0-44.0mg KOH / g, and the viscosity is 800-1200mPa˙s. The slow resilience polyether adopts the polyether polyol of G 308 model produced by Jiahua Chemical, which is prepared by reacting glycerin as initiator and propylene oxide, and the mass ratio of initiator and propylene oxide is 2: 3. Its functionality is 3, its hydroxyl value is 180-220 mg KOH / g, and its viscosity is 200-400 mPa˙s. The polymer polyol adopts the model of PP 3630 ...

Embodiment 2

[0046] A kind of slow rebound memory cotton, its raw material composition is as follows:

[0047] Polyether polyol composition: 100 g. Among them, 80g of hydroxyl-terminated polyether, 10g of slow resilience polyether and 10g of polymer polyol are included. The hydroxyl-terminated polyether is a P156M polyether produced by Jiahua, with a functionality of 3, a hydroxyl value of 33-37 mgKOH / g, and a viscosity of 900-1500 mPa˙s. The slow resilience polyether adopts the polyether polyol of the model G 303 produced by Jiahua, which has a functionality of 3, a hydroxyl value of 541-581 mg KOH / g, and a viscosity of 200-600 mPa˙s. The polymer polyol adopts the HP505 polymer polyol produced by Weijiahua, which has a solid content of 50, a hydroxyl value of 21-25 mgKOH / g, and a viscosity of 5000-7500 mPa˙s.

[0048] Amine catalyst: Aojia A33 0.3g.

[0049] Surfactant: Dongjun H-550 1.7g.

[0050] Foaming agent: Sinopharm methyl formate 10g.

[0051] Deionized water: 5g.

[0052] F...

Embodiment 3

[0057] A kind of slow rebound memory cotton, its raw material composition is as follows:

[0058] Polyether polyol composition: 100 g. Among them, 60g of hydroxyl-terminated polyether, 20g of slow resilience polyether and 20g of polymer polyol are included. The hydroxyl-terminated polyether is a model F 3500M polyether produced by Jiahua, with a functionality of 3, a hydroxyl value of 31-37 mgKOH / g, and a viscosity of 1050-1400 mPa˙s. The slow resilience polyether adopts the polyether polyol of the model G 305 produced by Jiahua, which has a functionality of 3, a hydroxyl value of 320-340 mg KOH / g, and a viscosity of 300-600 mPa˙s. The polymer polyol is PP3645 produced by Weijiahua, with a solid content of 42, a hydroxyl value of 18-23 mgKOH / g, and a viscosity of 5000-7500 mPa˙s.

[0059] Amine catalysts: 0.1 g of Aojia A1; 0.3 g of Aosijia A33.

[0060] Post-aging catalyst: Tosoh D 60 0.4g.

[0061] Surfactant: Dongjun H-360 1g; Dongjun H-550 0.4g.

[0062] Foaming agent...

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Abstract

The invention discloses slow rebound memory foam and a preparation method thereof. The slow rebound memory foam comprises the following raw materials in parts by weight: 20-60 parts of isocyanate, 100parts of a polyether polyol composition, 1-20 parts of methyl formate and 3-15 parts of an auxiliary agent, wherein the polyether polyol composition comprises hydroxyl-terminated polyether, slow rebound polyether and polymer polyol. On the premise of guaranteeing environmental protection, the flexibility, air permeability, tensile strength, elongation at break, tearing strength and other properties can be improved.

Description

technical field [0001] The invention relates to the field of memory cotton, in particular to a memory cotton with a slow rebound function and a preparation method thereof. Background technique [0002] Slow rebound memory foam is an open cell structure with the characteristics of temperature-sensitive decompression, and can also be called a temperature-sensitive decompression material. Temperature sensing refers to sensing the body temperature, and decompression refers to absorbing the pressure of the human body. When the human body touches the material, the material will sense the temperature of the human body and gradually become softer. At the same time, it absorbs the pressure of the human body, thereby adjusting the human body. to the most comfortable position. [0003] At present, in the production of most slow rebound memory foam, the types of foaming agents used are HCFC-141b, methylene chloride and water. Among them, dichloromethane is moderately toxic and narcoti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/62C08G18/48C08G18/40C08K5/521C08J9/14C08G101/00
CPCC08G18/7664C08G18/6262C08G18/4804C08G18/4829C08G18/4063C08K5/521C08J9/142C08J9/0038C08G2101/00C08G2280/00C08J2375/04C08J2203/12
Inventor 班晓龙宋宝宁李玉博
Owner 上海抚佳精细化工有限公司
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