Open-cell polyurethane rigid foam prepared from polyurethane rigid foam degradation solution
A rigid foam, polyurethane technology, applied in the field of open-cell polyurethane rigid foam, open-cell polyurethane rigid foam and its preparation field, can solve the problems of low density, high open-cell ratio, environmental pollution of waste polyurethane rigid foam, etc. Achieve the effect of low density, good sound-absorbing material and considerable economic benefits
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Embodiment 1
[0031] A kind of open cell polyurethane rigid foam prepared by polyurethane rigid foam degradation liquid, formula is as follows:
[0032] Among them, the polyurethane rigid foam degradation solution is prepared by reacting butanediol and rigid polyurethane foam plastics under the action of catalyst triethylamine at 150°C for 12h, its hydroxyl value is 800mgKOH / g, and its viscosity is 500mPa·s (25°C) , polyether polyol A is polyether 330N (Shanghai Gaoqiao), polyether polyol B is H4110III (Nanjing Hongbaoli), polyester polyol PS‐2352 (Stepan)
[0033] Polyurethane rigid foam degradation solution 10 copies Polyether polyol A 45 copies Polyether polyol B 35 copies Polyester polyol 10 copies Tegostab B8433 0.8 parts O‐501 0.6 parts Triethylenediamine 0.2 parts N,N‐Dimethylcyclohexylamine 1.0 copies Potassium isooctanoate 2.0 copies Dibutyltin dilaurate 0.6 parts water 0.5 parts Cyclopentane 10 c...
Embodiment 2
[0040] A kind of open cell polyurethane rigid foam prepared by polyurethane rigid foam degradation liquid, formula is as follows:
[0041] Among them, the polyurethane rigid foam degradation solution is prepared by reacting butanediol and rigid polyurethane foam plastics under the action of catalyst sodium hydroxide at 200°C for 6 hours, its hydroxyl value is 760mgKOH / g, and its viscosity is 1500mPa·s (25°C) , polyether polyol A is polyether 330N (Shandong Dongda), polyether polyol B is H6035 (Nanjing Hongbaoli)
[0042] Polyurethane rigid foam degradation solution 20 copies Polyether polyol A 40 copies Polyether polyol B 40 copies Tegostab B8444 0.80 servings O‐501 0.50 servings pentamethyldiethylenetriamine 0.20 servings N,N‐Dimethylcyclohexylamine 1.0 copies Potassium isooctanoate 1.6 servings stannous octoate 0.6 parts water 1.0 copies Isopentane 10 copies 1,1,1,3,3‐pentafluoropropane 8 s...
Embodiment 3
[0048] A kind of open cell polyurethane rigid foam prepared by polyurethane rigid foam degradation liquid, formula is as follows:
[0049] Among them, the polyurethane rigid foam degradation solution is prepared by reacting butanediol and rigid polyurethane foam plastics under the action of catalyst potassium hydroxide at 150°C for 8 hours, its hydroxyl value is 710mgKOH / g, and its viscosity is 2500mPa·s (25°C) , polyether polyol A is polyether H6000 (Nanjing Hongbaoli), polyether polyol B is H4110III (Nanjing Hongbaoli)
[0050] Polyurethane rigid foam degradation solution 25 copies Polyether polyol A 40 copies Polyether polyol B 35 copies Tegostab B8466 1.2 parts K757 0.6 parts Triethylenediamine 0.2 parts N,N‐Dimethylcyclohexylamine 1.0 copies Potassium isooctanoate 2.0 copies Dibutyltin dilaurate 0.6 parts water 1.5 servings Cyclopentane 10 copies Fluorodichloroethane 10 copies M20S ...
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