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Slow-rebound polyurethane expanded foam and preparation method thereof

A polyurethane and slow rebound technology, applied in the field of polyurethane foam, can solve the problems of reduced molecular mobility, reduced comfort, and hard hand feeling of slow rebound foam, so as to reduce the glass transition temperature, improve vitality, and improve The effect of the slow rebound effect

Inactive Publication Date: 2020-03-27
泉州玺堡家居科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But because polyurethane polymer is very sensitive to temperature, also known as temperature-sensitive memory foam, it achieves slow rebound effect through molecular flow, but in low temperature environment, the molecular mobility decreases, and the slow rebound foam feels hard. Reduced comfort

Method used

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  • Slow-rebound polyurethane expanded foam and preparation method thereof
  • Slow-rebound polyurethane expanded foam and preparation method thereof
  • Slow-rebound polyurethane expanded foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0047] In the preparation example 1-3, the dispersant is selected from the dispersant with the article number DH-A012 sold by Guangdong Zhongbang Fine Chemical Co., Ltd., and the nano-silver powder is selected from the nanometer silver powder with the article number DK101-1 sold by Beijing Deke Daojin Technology Co., Ltd. The silver powder and nano-titanium dioxide are selected from the nano-titanium dioxide of the model P25 sold by Chongqing Kaiyin Chemical Co., Ltd., and the polyvinylpyrrolidone is selected from the polyvinylpyrrolidone with the product number PVP-K90 sold by Guangdong Yuemei Chemical Co., Ltd.

preparation example 1

[0048] Preparation example 1: (1) Cut bamboo material into slices, carbonize at 500°C for 20 days, pulverize into 100nm powder, and then carbonize at 1000°C for 5 days;

[0049] (2) by weight, 2kg nano-silver powder, 1kg nano-titanium dioxide and 0.2kg polyvinylpyrrolidone are added to 4kg dehydrated alcohol, stirred at a constant temperature at 40°C for 4h, add 4kg carbonized bamboo charcoal powder and 0.1kg dispersant, Grind for 10 minutes to obtain nanometer bamboo charcoal powder.

preparation example 2

[0050] Preparation example 2: (1) Cut bamboo material into slices, carbonize at 550°C for 15 days, pulverize into 150nm powder, and then carbonize at 1100°C for 4 days;

[0051] (2) In parts by weight, add 3kg of nano-silver powder, 1.5kg of nano-titanium dioxide and 0.3kg of polyvinylpyrrolidone into 5kg of absolute ethanol, stir at a constant temperature of 40°C for 4.5h, add 5kg of carbonized bamboo charcoal powder and 0.2kg of dispersed agent, and ground for 15 minutes to obtain nano-bamboo charcoal powder.

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Abstract

The invention discloses slow-rebound polyurethane expanded foam and a preparation method thereof. The slow-rebound polyurethane expanded foam comprises the following components: 24 to 30 parts of a composite polyether polyol, 10 to 16 parts of a MDI system isocyanate, 2.5 to 3.5 parts of talcum powder, 1.2 to 1.8 parts of dioctyl adipate, 0.15 to 0.20 part of a catalyst, 0.45 to 0.65 part of silicone oil, 0.24 to 0.96 part of a foaming agent and 0.24 to 0.96 part of a chain extender; wherein the composite polyether polyol is formed by mixing Polyol A, Polyol B and Polyol C, and the mass ratioof Polyol A to Polyol B to Polyol C is (6-8): (1-3): 1. The slow-rebound polyurethane expanded foam has the advantages of environmental protection, high air permeability, good heat dispersion performance, low temperature sensitivity and good slow-rebound effect at low temperature.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam, in particular to a slow-rebound polyurethane expansion foam and a preparation method thereof. Background technique [0002] Polyurethane slow rebound foam is called memory foam and viscoelastic foam. Its unique feature is that it can conform to the shape of the load, so that the contact area is maximized, the stress gradient is minimized, and the stress concentration point can be relieved. To achieve the distribution of force, there is no local extrusion and tingling. Therefore, slow rebound foam is widely used as pillows, mattresses, cushions and sofas, etc., which is beneficial to human blood circulation and is a high-comfort health care foam. [0003] The Chinese invention patent document with the application number CN201310227649.2 discloses a slow rebound memory cotton containing gel material, which is made of the following raw materials in parts by weight: 100 parts of polyether,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08K3/34C08K5/11C08L75/08C08L5/08C08L39/06C08K3/04C08K13/02C08G101/00
CPCC08G18/3206C08G18/3215C08G18/4812C08G18/4833C08G18/6674C08K3/34C08K5/11C08K2003/0806C08K2003/2241C08K2201/011C08L75/08C08L2203/14C08L2205/16C08G2110/0083C08L5/08C08L39/06C08K13/02C08K3/04C08K3/08C08K3/22
Inventor 刘龙滨刘龙水郭学章赵辉李明明刘志芸
Owner 泉州玺堡家居科技有限公司
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