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Composition, rigid polyurethane foam material and refrigeration device

A composition and technology of combining polyether, applied in the field of materials, can solve the problems of slow curing speed of foam surface, chemical instability, prolonging curing time, etc., and achieve the effect of improving storage stability, low thermal conductivity and short curing time

Active Publication Date: 2015-04-22
HEFEI HUALING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the LBA molecule contains double bonds, and its inherent chemical instability not only provides the desired low global warming potential and zero ozone depletion potential, but also its long-term storage in the combined polyether. Stability creates difficulties
Simultaneously, PC-5 (pentamethyldiethylenetriamine) or A-1[70% dipropylene glycol solution of bis(dimethylaminoethyl)ether], which are conventional foaming catalysts in rigid polyurethane composite materials, are easily React with LBA, thereby further increasing the instability of the foaming material of the LBA system; Heat, which slows down the curing rate of the foam surface, prolongs the curing time, thereby reducing production efficiency
[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 material and refrigeration device
  • Composition, rigid polyurethane foam material and refrigeration device

Examples

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Embodiment 1

[0039] 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 is 1200mpa.s, number average molecular weight is 550, hydroxyl value is 280mgKOH / g, functionality 2.7), 0.3 parts by weight of PC-12, 2.3 parts by weight of PC-8, 0.6 parts by weight of TMR- 2, 2.0 parts by weight of silicon foam stabilizer (viscosity is 1011mpa.s), 1.5 parts by weight of water, 6 parts by weight of LBA, 10 parts by weight of cyclopentane, 12 parts by weight of HFC-245fa, 134.4 parts by weight isocyanate (isocyanate index 1.05).

Embodiment 2

[0041] 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, 3.1 parts by weight of polyether polyol D, 10 parts by weight of aromatic polyol Ester polyol (viscosity is 1200mpa.s, number average molecular weight is 550, hydroxyl value is 280mgKOH / g, functionality 2.7), 0.8 weight part of PC-12, 1.6 weight part of PC-8, 0.8 weight part of TMR- 2. 2.0 parts by weight of silicon-based foam stabilizer (viscosity: 1011 mpa.s), 1.7 parts by weight of water, 34 parts by weight of LBA, and 134 parts by weight of isocyanate (isocyanate index: 1.0).

Embodiment 3

[0043] 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 is 1200mpa.s, number average molecular weight is 550, hydroxyl value is 280mgKOH / g, functionality 2.7), 1.8 parts by weight of PC-12, 0.8 parts by weight of PC-8, 0.6 parts by weight of TMR- 2. 2.0 parts by weight of silicon-based foam stabilizer (viscosity: 1011 mpa.s), 1.5 parts by weight of water, 40 parts by weight of LBA, and 134.4 parts by weight of isocyanate (isocyanate index: 0.96).

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Abstract

The invention discloses a composition, rigid polyurethane foam and a refrigeration device. The composition comprises combined polyether and isocyanate, wherein the combined polyether contains polyol, a foaming agent and a catalyst composition, wherein the foaming agent contains trans-1-chloro-3, 3, 3-trifluoropropene, and the catalyst composition contains N-methyldicyclohexylamine, N, N-dimethylcyclohexylamine and (2-hydroxypropyl) trimethylammonium formate. The composition has long-term storage stability; and furthermore, the foam material obtained by adopting the composition has the characteristics of low heat conduction coefficient, high strength, short curing time and the like, so that an obtained product has a relatively good 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] In 2014, the Chinese government launched a new energy efficiency standard, which was 20% higher than the 2008 energy efficiency standard. At the same time, the EU regulation No. 517 / 2014 on fluorine-containing room temperature gases stipulated that the GWP of household appliances exported to the EU on January 1, 2015 was ≤ 150. As the country pays more and more attention to energy saving and environmental protection, trans-1-chloro-3,3,3-trifluoropropene (HFO-1233zd, referred to as LBA) has low boiling point, non-combustibility, zero ozone depletion potential (ODP) ) and acceptably low global warming potential (GWP<7), especially due to its low thermal conductivity, compounds containing blowing agents for LBA polyurethane foams can be used as en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/18C08J9/14C08L75/06C08L75/08C08G101/00
CPCC08G18/1816C08G18/1875C08G18/4018C08G18/482C08G18/4883C08G18/503C08J9/08C08J9/141C08J9/144C08J9/146C08J2203/02C08J2203/14C08J2203/162C08J2203/184C08J2203/204C08J2375/04C08G2110/0025Y02P20/10
Inventor 赵士虎李彩侠胡俊生朱洪阳张静静
Owner HEFEI HUALING CO LTD
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