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Composition, rigid polyurethane foam and refrigeration equipment

A composition and technology of combining polyether, which is applied in the field of materials, can solve the problems that foam materials cannot be stored for a long time and are difficult in practical application, and achieve the effects of improving storage stability, good mold release, and strong adhesion

Active Publication Date: 2017-07-18
HEFEI HUALING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the use of LBA system foaming materials is instant mixing and immediate use. However, the foaming materials in the pipeline and storage tanks cannot be stored for a long time, which brings difficulties to practical applications.

Method used

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  • Composition, rigid polyurethane foam and refrigeration equipment
  • Composition, rigid polyurethane foam and refrigeration equipment
  • Composition, rigid polyurethane foam and refrigeration equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Raw material formula: 20 parts by weight of polyether polyol A, 20 parts by weight of polyether polyol B, 40 parts by weight of polyether polyol C, 3.3 parts by weight of polyether polyol D, 10 parts by weight of aromatic polyol Ester polyol (viscosity 1200mpa.s, number average molecular weight 550, hydroxyl value 280mgKOH / g, functionality 2.7), 0.5 parts by weight of 1,2-dimethylimidazole, 2.0 parts by weight of N, N-di Methylcyclohexylamine, 0.6 parts by weight of (2-hydroxypropyl) ammonium trimethylformate, 2.0 parts by weight of silicon foam stabilizer (viscosity is 1011mpa.s), 1.5 parts by weight of water, 30 parts by weight of LBA, 137.8 parts by weight of isocyanate (isocyanate index: 1.06).

Embodiment 2

[0042] Raw material formula: 20 parts by weight of polyether polyol A, 20 parts by weight of polyether polyol B, 40 parts by weight of polyether polyol C, 3.6 parts by weight of polyether polyol D, 10 parts by weight of aromatic polyol Ester polyol (viscosity 1200mpa.s, number average molecular weight 550, hydroxyl value 280mgKOH / g, functionality 2.7), 0.8 parts by weight of 1,2-dimethylimidazole, 1.6 parts by weight of N, N-di Methylcyclohexylamine, 0.5 parts by weight of (2-hydroxypropyl) ammonium trimethylformate, 2.0 parts by weight of silicon foam stabilizer (viscosity is 1011mpa.s), 1.5 parts by weight of water, 3 parts by weight of LBA, 9.5 parts by weight of cyclopentane, 12 parts by weight of HFC-245fa, 137.0 parts by weight of isocyanate (isocyanate index: 1.10).

Embodiment 3

[0044]Raw material formula: 20 parts by weight of polyether polyol A, 20 parts by weight of polyether polyol B, 40 parts by weight of polyether polyol C, 3.6 parts by weight of polyether polyol D, 10 parts by weight of aromatic polyol Ester polyol (viscosity 1200mpa.s, number average molecular weight 550, hydroxyl value 280mgKOH / g, functionality 2.7), 1.5 parts by weight of 1,2-dimethylimidazole, 1.0 parts by weight of N,N-di Methylcyclohexylamine, 0.4 parts by weight of (2-hydroxypropyl) ammonium trimethylformate, 2.0 parts by weight of silicon foam stabilizer (viscosity is 1011mpa.s), 1.5 parts by weight of water, 40 parts by weight of LBA, 137.2 parts by weight of isocyanate (isocyanate index: 0.98).

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Abstract

The invention discloses a composition, a rigid polyurethane foam material and refrigeration equipment. The composition comprises: combined polyether, the combined polyether contains polyhydric alcohol, a foaming agent and a catalyst composition, and the foaming agent contains Trans 1-chloro-3,3,3-trifluoropropene, the catalyst composition contains 1,2-dimethylimidazole, N, N-dimethylcyclohexylamine and (2-hydroxypropyl) three methylammonium formate; and isocyanates. The composition has long-term storage stability, and the foam material obtained by using the composition has the characteristics of good mold release, strong adhesiveness, low thermal conductivity, etc., so that the obtained product has better energy-saving effect.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular, the invention relates to a composition, a rigid polyurethane foam material and refrigeration equipment. Background technique [0002] Rigid polyurethane foam is prepared by reacting polyether polyol or polyester polyol with organic polyisocyanate in the presence of additives such as blowing agent, catalyst and foam stabilizer. Blowing agents, catalysts, foam stabilizers and other additives affect the performance of polyurethane foam, while catalysts strongly affect the foaming process performance and foam performance, such as emulsification reaction speed, gel reaction speed, curing speed, foam fluidity, thermal conductivity and dimensional stability etc. In the foaming process, foam curing speed and foam fluidity are two important indicators of foaming process performance. The speed of foam curing speed and the quality of fluidity directly affect the quality of foam. Fast curin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/20C08G18/18C08G18/50C08J9/14C08G101/00
CPCC08G18/1816C08G18/1875C08G18/2027C08G18/4018C08G18/42C08G18/4804C08G18/4883C08J9/144C08J2375/08C08G2110/005Y02P20/10
Inventor 赵士虎李彩侠程发祥张可可张静静
Owner HEFEI HUALING CO LTD
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