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Method for preparing novel flame-retardant flexible polyurethane foam and product thereof

A technology of soft polyurethane and foam plastics, which is applied in the field of flame-retardant polyurethane foam plastics, can solve the problems of high price, limited application of soft polyurethane foam, and further improvement of flame-retardant effect, and achieves low production cost, easy industrial implementation, Inexpensive effect

Inactive Publication Date: 2011-04-13
CHUZHOU YOULIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardant effect of this type of organic flame retardant needs to be further improved, and the price is relatively expensive, which limits the application of flexible polyurethane foam to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Weigh 100g of polyether polyol, 100g of isocyanate, 1g of foam stabilizer, 3g of blowing agent, 0.5g of tin catalyst, 0.5g of triethylenediamine as gel catalyst, 5g of flame retardant melamine, and attapulgite 5g. Using a one-step foaming process, sequentially add polyether polyol, foam stabilizer, catalyst, water and flame retardant into the beaker, and stir it evenly under high-speed electric stirring to obtain a viscous mixture.

[0022] (2) While stirring, quickly add the isocyanate into the viscous polyether polyol mixture while stirring rapidly. When the reactant starts to take on a milky white color, it is poured into pre-prepared molds. After the foaming is complete and solidified, put the mold filled with the foamed plastic into an oven, mature it at 40°C for 2 hours, and finally take out the mold and demould to obtain a flame-retardant flexible polyurethane foamed plastic product.

Embodiment 2

[0024] (1) Weigh 100g of polyether polyol, 100g of isocyanate, 1g of foam stabilizer, 4g of blowing agent, 0.5g of tin catalyst, 0.5g of triethylenediamine as gel catalyst, 10g of flame retardant melamine, and attapulgite 5g. Using a one-step foaming process, sequentially add polyether polyol, foam stabilizer, catalyst, water and flame retardant into the beaker, and stir it evenly under high-speed electric stirring to obtain a viscous mixture.

[0025] (2) While stirring, quickly add the isocyanate into the viscous polyether polyol mixture while stirring rapidly. When the reactant starts to take on a milky white color, it is poured into pre-prepared molds. After the foaming is complete and solidified, put the mold filled with foamed plastic into an oven, and mature it at 60° C. for 2 hours, and finally take out the mold and demould to obtain a flame-retardant flexible polyurethane foamed plastic product.

Embodiment 3

[0027] (1) Weigh 100g of polyether polyol, 100g of isocyanate, 2g of foam stabilizer, 4g of blowing agent, 0.5g of tin catalyst, 0.5g of triethylenediamine as gel catalyst, 10g of flame retardant melamine, and attapulgite 10g. Using a one-step foaming process, sequentially add polyether polyol, foam stabilizer, catalyst, water and flame retardant into the beaker, and stir it evenly under high-speed electric stirring to obtain a viscous mixture.

[0028] (2) While stirring, quickly add the isocyanate into the viscous polyether polyol mixture while stirring rapidly. When the reactant starts to take on a milky white color, it is poured into pre-prepared molds. After the foaming is complete and solidified, put the mold filled with the foamed plastic into an oven, mature it at 50° C. for 3 hours, and finally take out the mold and demould to obtain a flame-retardant flexible polyurethane foamed plastic product.

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PUM

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Abstract

The invention relates to a method for preparing novel flame-retardant flexible polyurethane foam and a product thereof. In the preparation method, attapulgite serving as natural mineral soil and melamine serving as the conventional cheap organic flame retardant are compounded. The preparation process comprises the following steps of: uniformly mixing polyether glycol, a foam stabilizer, a foaming agent, a tin catalyst, a gel catalyst, the melamine, the attapulgite and the like to obtain a viscous mixture; quickly adding isocyanate into the viscous mixture under stirring; and slaking for a certain period of time at a certain temperature after complete foaming and curing are performed to obtain a flexible polyurethane foam product with flame retardant function. The invention has the characteristics that: the method for preparing the flame-retardant flexible polyurethane foam has a simple process and low production cost, does not need special equipment, is easy to industrialize and implement, and the like. The flame-retardant polyurethane foam product is flexible foam with high flame retardant property.

Description

technical field [0001] The invention relates to the field of flame-retardant polyurethane foam plastics, in particular to a method for preparing flexible polyurethane foam plastics with good flame retardancy and low production cost and its products. The flame-retardant flexible polyurethane foam plastic product can be applied to fields such as construction and furniture. Background technique [0002] Polyurethane foam is one of the main varieties of polyurethane synthetic materials, and the total output accounts for about 60% of polyurethane materials. Because of its excellent physical and mechanical properties, electrical properties, acoustic properties and chemical corrosion resistance, and has strong adhesion with a variety of materials, it is widely used in various fields. [0003] According to the degree of softness and hardness, polyurethane foam can be roughly divided into the following types: polyurethane soft foam, polyurethane rigid foam and polyurethane semi-rigi...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K13/02C08K3/34C08K5/3492C08J9/06C08G18/48
Inventor 何晓春赵义平王庆球计成忠
Owner CHUZHOU YOULIN TECH DEV
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