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Preparation method of attapulgite modified bio-based polyurethane foam insulation material

A technology of polyurethane foam and thermal insulation material, which is applied in the field of bio-based flame retardant polyurethane foam thermal insulation material, can solve problems such as poor flame retardant performance, and achieve the effects of improving compatibility, low production cost and simple process

Active Publication Date: 2015-07-01
盱眙凹土能源环保材料研发中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to: provide a preparation method of attapulgite modified bio-based polyurethane foam insulation material, overcome the shortcomings of the polyurethane material itself such as poor flame retardancy, and use natural nano-material attapulgite to modify polyurethane sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Add 100 g of ethylene glycol and 3 g of sulfuric acid into a three-necked flask equipped with a condenser, stir mechanically to make it evenly mixed, heat up to 150°C, add 20 g of eucalyptus powder under stirring, and react for 60 minutes. The three-necked flask was placed in the ice-water mixture to cool to terminate the reaction, and the hydroxyl value of the obtained liquefied product was 500-740 mg KOH / g;

[0023] (2) Add 20 g of attapulgite, 1 g of concentrated hydrochloric acid and 20 mL of water into the flask, stir at 30 °C for 180 min, filter, and wash the solid product with deionized water until the pH of the washing solution is neutral; drying the acid-modified attapulgite, grinding, passing through a 200-mesh sieve, and sealing and storing to obtain the acid-modified attapulgite;

[0024] (3) In a plastic cup, add 0.1 g of acid-modified attapulgite and 10 g of vegetable polyol, mix well, add 0.09 g of silicone oil (AK8805), 0.01 g of water, 0.05 g of dib...

Embodiment 2

[0026] (1) Add 100 g of polyethylene glycol 400 and 6 g of sulfuric acid into a three-necked flask equipped with a condenser, stir it mechanically to make it evenly mixed, raise the temperature to 170°C, add 15 g of bagasse under stirring, and react for 30 min Finally, the three-neck flask was placed in the ice-water mixture to cool to terminate the reaction, and the hydroxyl value of the obtained liquefied product was 320-640 mg KOH / g;

[0027] (2) Add 20 g of attapulgite, 5 g of concentrated hydrochloric acid and 50 mL of water into the flask, stir at 60 °C for 30 min, filter, and wash the solid product with deionized water until the pH of the washing solution is neutral; drying the acid-modified attapulgite, grinding, passing through a 200-mesh sieve, and sealing and storing to obtain the acid-modified attapulgite;

[0028] (3) Weigh 3 g of acid-modified attapulgite, keep it warm at 200°C for two hours, and then add 1.5 g gamma - Aminopropyltriethoxysilane, 98.5g toluene, ...

Embodiment 3

[0031] (1) Add 80 g of ethylene glycol, 20 g of glycerin and 6 g of hydrochloric acid into a three-necked flask equipped with a condenser, stir it mechanically to make it evenly mixed, raise the temperature to 150°C, add 40 g of bamboo powder under stirring, After 30 minutes of reaction, the three-neck flask was placed in a mixture of ice and water to cool to terminate the reaction, and the hydroxyl value of the obtained liquefied product was 380-710 mg KOH / g;

[0032] (2) In a plastic cup, add 0.8 g of natural attapulgite (through a 200-mesh sieve) and 15 g of plant polyols, mix well, add 0.46 g of silicone oil (AK8804), 0.5 g of water, 0.12 g of stannous octoate, 0.16 g triethylenediamine, stir and mix evenly at room temperature, then add 18 g diphenylmethane diisocyanate to it, stir for 5 seconds, stop stirring when there are bubbles in the mixture, and turn white rapidly, and foam freely; Cured in an oven at 90 °C for 2 h to obtain attapulgite-modified bio-based polyuretha...

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Abstract

The invention discloses a preparation method of an attapulgite modified bio-based polyurethane foam insulation material. The preparation method comprises the steps of compounding propanediol obtained by liquefying cellulosic biomass and attapulgite to obtain compound propanediol, and compounding modified attapulgite obtained through acid modification and organic modification and isocyanate to obtain compound isocyanate; mixing propanediol or compound propanediol, a foam stabilizer, a foaming agent and a catalyst uniformly to obtain a viscous mixture; quickly adding isocyanate or compound isocyanate to the viscous mixture in a stirring state, and aging the product at a certain temperature for a while after complete foaming and curing, thus obtaining a rigid polyurethane foam insulation material with a flame retardant function. The preparation method has the characteristics of simple process, low production cost, no need for special equipment, easiness in implementation of industrialization and the like. The polyurethane foam insulation material is a rigid foamed plastic with good flame retardance.

Description

technical field [0001] The invention relates to a preparation method of a flame-retardant polyurethane foam insulation material, in particular to a method for preparing a biodegradable bio-based flame-retardant polyurethane foam insulation material by modifying attapulgite. Background technique [0002] With the development of the economy, energy and environmental issues have become major issues affecting the sustainable development of our national economy. Improving the energy saving performance of buildings is an urgent need to reduce energy consumption such as housing heating, ventilation and air conditioning. In order to meet the building's energy-saving requirements, an effective measure is to use an external thermal insulation system to reduce the thermal conductivity of the surrounding structure, which mainly depends on the use of thermal insulation materials. [0003] Rigid polyurethane foam has the characteristics of light weight, heat insulation, moisture resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/32C08K9/04C08K9/06C08K9/02C08K3/34C08J9/08C08G101/00
CPCC08G18/3203C08K3/34C08K9/02C08K9/04C08K9/06C08K2201/011C08G2110/0083
Inventor 陈新德张海荣杨娟杨会娟熊莲郭海军黄超林晓清
Owner 盱眙凹土能源环保材料研发中心
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