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Method for preparing PIR (polyisocyanurate) material with ionic liquid catalyst

A technology of ionic liquid and catalytic preparation, applied in the field of PIR material preparation

Inactive Publication Date: 2012-05-02
JIANGSU KETAI NEW HEAT INSULATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And use ionic liquid to directly catalyze polyurethane reaction, especially the application of PIR reaction, there is no report

Method used

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  • Method for preparing PIR (polyisocyanurate) material with ionic liquid catalyst
  • Method for preparing PIR (polyisocyanurate) material with ionic liquid catalyst
  • Method for preparing PIR (polyisocyanurate) material with ionic liquid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 3920g combined polyether, the hydroxyl value is about 200mgKOH / g, of which:

[0030]

[0031] Fully mix with 80g of ionic liquid AMIMCl at 40°C, and react with 6000g pMDI through a high-pressure machine into a mold, the material temperature is 25°C, the high-pressure machine pressure is 15MPa, and the mold temperature is 40°C. After 30 minutes demoulding, the obtained density is 70kg / m 3 of PIR material.

Embodiment 2

[0033] 7870g combined polyether, the hydroxyl value is about 180mgKOH / g, of which:

[0034]

[0035] Fully mixed with 130g ionic liquid BMIMBF4 at 20°C, and reacted with 16000g pMDI through a high-pressure machine and injected into a mold. The material temperature was 25°C, the high-pressure machine pressure was 35MPa, and the mold temperature was 50°C. After 60 minutes demoulding, the obtained density is 50kg / m 3 of PIR material.

Embodiment 3

[0037] 39200g combined polyether, the hydroxyl value is about 300mgKOH / g, of which:

[0038] Polyoxypropylene polyol 85%

[0039] Polyoxyethylene polyol 2%

[0040] Polymer polyol 13%

[0041] (hydroxyl value is about 240mgKOH / g) and 800g ionic liquid BMIMCH 3 COOH was fully mixed at 20°C, and reacted with 80,000g pMDI through a high-pressure machine and injected into the mold. The material temperature was 25°C, the pressure of the high-pressure machine was 45MPa, and the mold temperature was 60°C. After 600 minutes demoulding, the obtained density is 500kg / m 3 of PIR material.

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Abstract

The invention discloses a method for preparing a PIR (polyisocyanurate) material with an ionic liquid catalyst. By utilizing the catalytic activity and other performances of an ionic liquid to prepare a PIR material, the method comprises: first mixing an ionic liquid with a combined polyether, then injecting the mixture and isocyanates into a mould for reaction by a high-pressure foaming machine, or directly injecting the ionic liquid, the combined polyether and isocyanates into a mould for reaction by a high-pressure foaming machine, conducting demoulding after reaction, thus obtaining a PIR material. The method of the invention accelerates the curing speed of PIR, avoids using a volatile catalyst, and also optimizes performances of the PIR material.

Description

technical field [0001] The invention belongs to the field of PIR material preparation, and in particular relates to a method for preparing PIR material by using ionic liquid catalysis. Background technique [0002] Polyurethane materials have been widely used in various industries such as automobiles, construction, home appliances, and energy. Among them, PIR material (polyisocyanurate) is widely used in the fields of liquefied natural gas, liquefied ethylene, liquefied petroleum gas storage and transportation, and building insulation due to its good flame retardancy, low linear expansion coefficient and thermal conductivity. Wide range of applications. However, due to the complex reaction process and slow curing process of PIR materials, the requirements for processing technology are very strict. In addition, the traditional amine, tin and mercury catalysts also have certain pollution to the environment. [0003] Ionic liquids are liquids that are composed entirely of io...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/48C08G18/42C08G18/16C08G18/20
Inventor 曹晖刘威葳
Owner JIANGSU KETAI NEW HEAT INSULATION MATERIAL
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