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Preparation method of thermal-insulation flame-retardant polyurethane material

A technology of polyurethane materials and prepolymers, applied in the field of polymer materials, to achieve stable performance, good flame retardant and heat insulation properties, and broad application prospects

Pending Publication Date: 2020-09-11
GUANGXI JISHUN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymer prepolymer synthesized using cyanuric acid as a raw material is a low-carbon material, and there is no report on the use of this low-carbon material to prepare polyurethane materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of flame-retardant polyurethane material, comprising the steps of:

[0031] (1) Mix cyanuric acid with alcohol amine, active agent, polyol or polyamine, add catalyst a, stir and heat up to 208-270°C, keep warm for 2-8 hours, and react until the viscosity of the material is greater than or equal to 900mPa. s, stop reaction, obtain cyanuric acid polyol amine prepolymer;

[0032] (2) Mix isocyanate, auxiliary agent and catalyst b to obtain a mixed solution, stir and heat up to 80-100°C, and then add the cyanuric acid polyolamine prepolymer prepared in step (1) into the mixed solution in batches , then add reinforcing agent, polyhydroxy oligomeric silsesquioxane, keep warm for 1-2.5h after each addition; after the reaction is completed, add curing agent, continue to react for 1-1.5h, cool down to 75°C or less, and fix the mold After curing, the heat-insulating and flame-retardant polyurethane material is obtained.

Embodiment 2

[0034] A preparation method of heat-insulating flame-retardant polyurethane material, comprising the steps of:

[0035] (1) Mix 129g of cyanuric acid and 217g of ethylene glycol, add 5g of ammonium chloride, stir and heat up to 220°C, keep the temperature for 4 hours, and when the viscosity of the material is 1000mPa.s, stop the reaction and remove water to obtain Cyanuric acid polyol amine prepolymer;

[0036] (2) Add 80g of toluene diisocyanate, 10g of triethylene amine, and 10g of aluminum oxide into the reactor, stir, heat up to 80-100°C, and add the cyanuric acid polyolamine prepolymer prepared in step (1) Add to the reactor in batches, the mass ratio of prepolymer addition to toluene diisocyanate is 0.5:1, keep warm for 1 hour after each addition, until the total addition of cyanuric acid polyol amine prepolymer and toluene diisocyanate The mass ratio of acid to fat is 3.5:1; after the reaction is completed, add 10g of triethylenediamine and continue the reaction for 0....

Embodiment 3

[0038] A preparation method of heat-insulating flame-retardant polyurethane material, comprising the steps of:

[0039] (1) Mix 129g cyanuric acid and 257g triethylenetetramine, add 10g ammonium chloride, stir and heat up to 220°C, keep the temperature for 4 hours, and when the viscosity of the material is 1000mPa.s, stop the reaction, remove water, Obtain cyanuric acid polyol amine prepolymer;

[0040](2) Add 80g of toluene diisocyanate, 5g of silicone oil, and 10g of aluminum oxide into the reactor, stir, and heat up to 80-100°C, then divide the cyanuric acid polyolamine prepolymer prepared in step (1) into batches Add the reactor once, the mass ratio of the prepolymer addition to toluene diisocyanate is 0.9:1, and keep warm for 2 hours after adding each time until the total addition of the cyanuric acid polyol amine prepolymer is equal to the mass ratio of toluene diisocyanate The mass ratio is 3.6:1; after the reaction is completed, 10g of triethylenediamine is added, and...

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Abstract

The invention mainly relates to a preparation method of a thermal-insulation flame-retardant polyurethane material. The method comprises the following steps of: taking cyanuric acid as a main raw material, performing mixing with alkylol amine, an active agent, polyol or polyamine, and carrying out reaction to obtain a cyanuric acid polyol amine prepolymer; and then mixing isocyanate, a reinforcingagent, polyhydroxy oligomeric silsesquioxane and the prepared cyanuric acid polyol amine prepolymer, carrying out reaction, adding a curing agent after the reaction is completed, carrying out reaction continuously for 1-1.5h, performing cooling, then conducting fixing with a mold, and performing curing to prepare the thermal-insulation flame-retardant polyurethane material. The prepared thermal-insulation flame-retardant polyurethane material has good flame-retardant and heat-insulation properties, the tensile strength of the polyurethane material is improved, and the application prospect iswide.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing a flame-retardant polyurethane material. [0002] technical background [0003] Polyurethane (referred to as PU) is a polymer made of polyisocyanate and polyether polyol or polyester polyol or / and small molecule polyol, polyamine or water. It is porous, low in density and chemically resistant. And other excellent properties, are widely used in many fields of life and production. However, while polyurethane materials bring convenience to people, they also pose a threat to people's safety because of their low ignition point and are easy to burn in the air. Flame-retardant polyurethane materials have emerged as the times require. By changing the type and composition of raw materials, the form and performance of the product can be greatly changed, and final products with different performance can be obtained to meet different use requirements. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/61C08G18/38
CPCC08G18/3851C08G18/61C08G18/7614
Inventor 刘建麟陈少东吴定超
Owner GUANGXI JISHUN ENERGY TECH
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