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Polyurethane rigid foam combined polyether, polyurethane rigid foam, and preparation method

A technology of rigid polyurethane foam and combining polyether, which is applied in the field of polyurethane materials, can solve the problems of poor dimensional stability of polyurethane rigid foam, poor foam fluidity, and high processing difficulty, achieve good foam dimensional stability, reduce the viscosity of material liquid, and have good performance. The effect of facilitating transportation and storage

Active Publication Date: 2020-08-18
上海抚佳精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the high-functionality polyether polyol as a raw material when preparing polyurethane rigid foam with methyl formate as a foaming agent, which has high processing difficulty and poor foam fluidity. Ether polyol is used as a raw material to make the polyurethane rigid foam obtained have poor dimensional stability and easy shrinkage defects, thereby providing a polyurethane rigid foam combination polyether, polyurethane rigid foam and preparation method

Method used

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  • Polyurethane rigid foam combined polyether, polyurethane rigid foam, and preparation method
  • Polyurethane rigid foam combined polyether, polyurethane rigid foam, and preparation method
  • Polyurethane rigid foam combined polyether, polyurethane rigid foam, and preparation method

Examples

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Effect test

Embodiment 1

[0066] A polyurethane rigid foam combined polyether, the raw materials are as follows:

[0067]

[0068] The preparation method of above-mentioned polyurethane rigid foam combination polyether is as follows:

[0069] (1) each raw material is weighed, and other raw materials that remove methyl formate are put into the mixing kettle, and stirred for 30min at 2000r / min to obtain mixture;

[0070] (2) Turn on the cooling water of the mixing kettle, cool the mixture to below 15°C, add methyl formate, stir at 1500r / min for 30min, discharge and pack.

[0071] A rigid polyurethane foam, the preparation method is as follows:

[0072] (1) take by weighing the polyurethane rigid foam combination polyether (white material) 127.5kg and isocyanate PM-200 (black material) 150kg of above-mentioned preparation respectively;

[0073] (2) Add the black material and the white material into the high-pressure machine respectively, set the mixing ratio of black and white material in the high-pr...

Embodiment 2

[0075] A polyurethane rigid foam combined polyether, the raw materials are as follows:

[0076]

[0077]

[0078] The preparation method of above-mentioned polyurethane rigid foam combination polyether is as follows:

[0079] (1) each raw material is weighed, and other raw materials that remove methyl formate are put into the mixing kettle, and stirred for 30min at 2000r / min to obtain mixture;

[0080] (2) Turn on the cooling water of the mixing kettle, cool the mixture to below 15°C, add methyl formate, stir at 1500r / min for 30min, discharge and pack.

[0081] A rigid polyurethane foam, the preparation method is as follows:

[0082] (1) take by weighing the polyurethane rigid foam combination polyether (white material) 127.5kg and isocyanate PM-200 (black material) 150kg of above-mentioned preparation respectively;

[0083] (2) Add the black material and the white material into the high-pressure machine respectively, the mixing ratio of black and white material in the...

Embodiment 3

[0085] A polyurethane rigid foam combined polyether, the raw materials are as follows:

[0086]

[0087] The preparation method of above-mentioned polyurethane rigid foam combination polyether is as follows:

[0088] (1) each raw material is weighed, and other raw materials that remove methyl formate are put into the mixing kettle, and stirred for 30min at 2000r / min to obtain mixture;

[0089] (2) Turn on the cooling water of the mixing kettle, cool the mixture to below 15°C, add methyl formate, stir at 1500r / min for 30min, discharge and pack.

[0090] A rigid polyurethane foam, the preparation method is as follows:

[0091] (1) take by weighing the polyurethane rigid foam combination polyether (white material) 127.5kg and isocyanate PM-200 (black material) 150kg of above-mentioned preparation respectively;

[0092](2) Add the black material and the white material into the high-pressure machine respectively, the mixing ratio of black and white material in the high-pressur...

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Abstract

The invention provides rigid polyurethane foam combined polyether, rigid polyurethane foam, and a preparation method. The polyurethane rigid foam combined polyether is prepared from the following rawmaterials: polyether polyol and methyl formate, wherein the polyether polyol is prepared from polyether polyol A, polyether polyol B, polyether polyol C and polyether polyol D in a mass ratio of (10-30) to (15-78) to (3-60) to (2-8); wherein the polyether polyol A, the polyether polyol B, the polyether polyol C and the polyether polyol D are different in functionality and hydroxyl value. The rigidpolyurethane foam combined polyether provided by the invention ensures that rigid polyurethane foam has good foam size stability, and compared with rigid polyurethane foam using a large amount of high-functionality polyether polyol, the rigid polyurethane foam combined polyether provided by the invention can effectively reduce the viscosity of feed liquid, has good foam fluidity and uniform foamdensity distribution, and reduces the processing difficulty.

Description

technical field [0001] The invention relates to the field of polyurethane materials, in particular to a polyurethane rigid foam combined polyether, a polyurethane rigid foam and a preparation method. Background technique [0002] Polyurethane rigid foam (referred to as polyurethane rigid foam) is a polymer made of isocyanate and polyether under the action of various additives such as foaming agents, catalysts, flame retardants, etc., mixed by special equipment, and foamed on site by high-pressure spraying. polymer. In actual production, the raw materials of rigid polyurethane foam are mainly polyurethane rigid foam combination polyether (also known as white material) and isocyanate (also known as black material). Among them, polyurethane rigid foam combination polyether (white material) is generally composed of polyether It is composed of various components such as monomer, foam stabilizer, cross-linking agent, catalyst, foaming agent, etc. As an excellent thermal insulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/22C08G18/20C08G18/18C08G18/16C08L75/08C08J9/14C08G101/00
CPCC08G18/163C08G18/1808C08G18/1816C08G18/1825C08G18/2036C08G18/225C08G18/4816C08G18/4829C08G18/4883C08J9/142C08J2203/12C08J2375/08C08G2110/0025
Inventor 夏伟如宋宝宁关永坚李玉博
Owner 上海抚佳精细化工有限公司
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