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Polyether composition for preparing reticulated polyurethane foam and application thereof

A technology of polyurethane foam and composition, which is applied in the field of high molecular polymer material preparation, to achieve the effects of reducing equipment finished products, good storage, and simple operation

Active Publication Date: 2018-11-13
福建钟山化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the physical method utilizes an explosive reaction, there are safety concerns

Method used

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  • Polyether composition for preparing reticulated polyurethane foam and application thereof

Examples

Experimental program
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Effect test

example 1

[0035] The polyether composition for preparing reticulated polyurethane foam consists of the following components in parts by weight:

[0036] Polyether polyol A: 70 parts,

[0037] Polyether polyol B: 15 parts,

[0038] Polyether polyol C: 3 parts,

[0039] Polymer polyol D: 15 parts,

[0040] Foam stabilizer: 1.2 parts,

[0041] Amine catalyst: 0.4 parts,

[0042] Gel catalyst: 0.32 parts.

[0043] Among them, polyether polyol A is prepared by polyaddition reaction with glycerin as an initiator, and is a random copolyether of propylene oxide and ethylene oxide with a propylene oxide content of 68% and a number average molecular weight of 6000; polyether Polyol B is prepared by polyaddition reaction with propylene glycol as the initiator, and is a propylene oxide-ethylene oxide block copolyether with an ethylene oxide content of 32% and a number average molecular weight of 2000; polyether polyol Alcohol C is prepared by addition polymerization with n-butanol as the init...

example 2

[0049] The polyether composition for preparing reticulated polyurethane foam consists of the following components in parts by weight:

[0050] Polyether polyol A: 65 parts,

[0051] Polyether polyol B: 25 parts,

[0052] Polyether polyol C: 3.8 parts,

[0053] Polymer polyol D: 10 parts,

[0054] Foam stabilizer: 1.7 parts,

[0055] Amine catalyst: 0.45 parts,

[0056] Gel catalyst: 0.2 parts.

[0057] Among them, polyether polyol A is prepared by polyaddition reaction with trimethylolpropane as the initiator, and is a propylene oxide-ethylene oxide block with a propylene oxide content of 80% and a number average molecular weight of 8000. Copolyether; polyether polyol B is a propylene oxide ethylene oxide copolyether with a functionality of 2 and a number-average molecular weight of 4000 from Jiangsu Zhongshan Chemical Co., Ltd. Ethylene glycol monomethyl ether is prepared by polyaddition reaction as the initiator. It is a propylene oxide ethylene oxide random copolyether ...

example 3

[0063] The polyether composition for preparing reticulated polyurethane foam consists of the following components in parts by weight:

[0064] Polyether polyol A: 80 parts,

[0065] Polyether polyol B: 15 parts,

[0066] Polyether polyol C: 4.5 parts,

[0067] Polymer polyol D: 5 parts,

[0068] Foam stabilizer: 1.5 parts,

[0069] Amine catalyst: 0.2 parts,

[0070] Gel catalyst: 0.56 parts.

[0071] Wherein the polyether polyol A is prepared by polyaddition reaction with pentaerythritol as an initiator, and is a random copolyether of propylene oxide and ethylene oxide with a propylene oxide content of 63% and a number average molecular weight of 6000; polyether Polyol B is prepared by polyaddition reaction with diethylene glycol as the initiator, and is a random copolyether of propylene oxide and ethylene oxide with a propylene oxide content of 75% and a number average molecular weight of 2000; polyether Polyol C is prepared by polyaddition reaction with n-butanol as t...

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Abstract

The invention provides a polyether composition for preparing reticulated polyurethane foam and application thereof, and relates to the technical field of preparation of a high molecular polymer material. The polyether composition is prepared from the following components in parts by weight: 60 to 100 parts of polyether polyol A, 10 to 30 parts of polyether polyol B, 1 to 8 parts of polyether polyol C, 0 to 15 parts of polymer polyol D, 1 to 6 parts of foam stabilizer, 0.01 to 0.8 part of amine catalyst, and 0.01 to 0.6 part of gel type catalyst. The polyether composition provided by the invention is easy to prepare, has good storage property, and can be used to prepare reticulated polyurethane foam by a one-step method, the foam opening ratio is more than 98%, and the number of 25mm cellsis less than 15. Compared with a two-step method, the one-step method has the advantages of low energy consumption, safety and environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, in particular to a polyether composition for preparing reticular polyurethane foam and its application. Background technique [0002] Reticular polyurethane foam, its microstructure is pentagonal dodecahedron, the film between meridians disappears due to reticulation treatment, and only the interconnected meridians form a three-dimensional skeleton network structure. This type of material has an open porosity of more than 97%, low density, good air permeability and softness, and especially has excellent ability to inhibit flame propagation and diffusion. Reticulated polyurethane foam is mainly used as a fireproof and explosion suppression filling material for fuel tanks such as military vehicles, tanks, aircraft and ships. It is not only light in weight, but also reduces the amount of available fuel by about 4%. In addition, reticular foam is also an excellent filter materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/40C08J9/08C08J9/12C08G101/00
CPCC08G18/4009C08G18/4804C08G2101/00C08J9/145C08J2203/02C08J2203/142C08J2203/184C08J2205/05C08J2375/04C08J2375/08
Inventor 俞中锋杨佳伟宗红亮张丽君申宝兵
Owner 福建钟山化工有限公司
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