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
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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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