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A kind of polyurethane rigid foam combination polyether, polyurethane rigid foam and preparation method

A polyurethane rigid foam and polyether combination technology, 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 the material liquid, reduce The effect of processing difficulty

Active Publication Date: 2021-11-23
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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  • A kind of polyurethane rigid foam combination polyether, polyurethane rigid foam and preparation method
  • A kind of polyurethane rigid foam combination polyether, polyurethane rigid foam and preparation method
  • A kind of polyurethane rigid foam combination polyether, polyurethane rigid foam and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0066] A kind of polyurethane rigid foam combination polyether, raw material is as follows:

[0067]

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

[0069] (1) Weigh each raw material, put other raw materials except methyl formate into a mixing tank, and stir at 2000r / min for 30min to obtain a mixture;

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

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

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

[0073] (2) Put the black material and white material into the high-pressure machine respectively, set the mixing ratio of black and white material in the high-pressure machine to 118 / 100...

Embodiment 2

[0075] A kind of polyurethane rigid foam combination polyether, raw material is as follows:

[0076]

[0077]

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

[0079] (1) Weigh each raw material, put other raw materials except methyl formate into a mixing tank, and stir at 2000r / min for 30min to obtain a mixture;

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

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

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

[0083] (2) Put the black material and white material into the high-pressure machine respectively. The ratio of black and white material mixed in the high-pressure machine is ...

Embodiment 3

[0085] A kind of polyurethane rigid foam combination polyether, raw material is as follows:

[0086]

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

[0088] (1) Weigh each raw material, put other raw materials except methyl formate into a mixing tank, and stir at 2000r / min for 30min to obtain a mixture;

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

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

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

[0092](2) Put the black material and white material into the high-pressure machine respectively. The ratio of black and white material mixed in the high-pressure machine is set to 118 / 10...

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Abstract

The invention provides a polyurethane rigid foam combination polyether, polyurethane rigid foam and a preparation method. The raw materials of the polyurethane rigid foam combination polyether include polyether polyol and methyl formate, and the polyether polyol includes a mass ratio of (10-30): (15-78): (3-60): (2-8 ) of polyether polyol A, polyether polyol B, polyether polyol C and polyether polyol D; polyether polyol A, polyether polyol B, polyether polyol C and polyether polyol D Functionality and hydroxyl value are different. The polyurethane rigid foam combined with the polyether provided by the invention ensures that the polyurethane rigid foam has good foam dimensional stability, and can effectively reduce the viscosity of the material liquid and the foam fluidity compared with the rigid polyurethane foam using a large number of high-functionality polyether polyols. Well, the foam density distribution is uniform, which reduces the difficulty of processing.

Description

technical field [0001] The invention relates to the field of polyurethane materials, in particular to a polyurethane rigid foam combined polyether, polyurethane rigid foam and a preparation method. Background technique [0002] Polyurethane rigid foam (referred to as polyurethane rigid foam) is a polymer formed by mixing isocyanate and polyether with foaming agent, catalyst, flame retardant and other additives through special equipment, and foamed on-site by high-pressure spraying. polymer. In actual production, the raw materials of polyurethane rigid foam are mainly polyurethane rigid foam combined polyether (also known as white material) and isocyanate (also known as black material), among which, polyurethane rigid foam combined polyether (white material) is generally made of polyether Combination of monomers, foam stabilizers, crosslinking agents, catalysts, foaming agents and other components. Polyurethane rigid foam, as an excellent thermal insulation material, is wid...

Claims

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Application Information

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Patent Type & Authority Patents(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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