Rigid polyurethane foam material on basis of polyurethane insole degradation products and method for preparing rigid polyurethane foam material
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A technology of polyurethane rigid foam and degradation products, which is applied in the field of polyurethane rigid foam materials and its preparation, can solve the problems of high cost, achieve the effects of solving environmental protection problems, simple production process, and high economic benefits
Active Publication Date: 2016-06-22
广州聚天化工科技有限公司
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However, whether it is commercially available polyether polyols or pol
Method used
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[0038] Example 1
[0039] S1. Break 100 parts of polyurethane insoles, and add 10 parts of ethylene glycol and 1 part of catalyst potassium isooctanoate into the reactor;
[0040] S2. Heating, controlling the reaction temperature to 180°C, the reaction time for 3 hours, and discharging to obtain a polyurethane degradation product, and the obtained degradation product has a hydroxyl value of 250.
Example Embodiment
[0041] Example 2
[0042] S1. Break 100 parts of polyurethane insoles, and add 5 parts of ethylene glycol, 10 parts of propylene glycol, and 3 parts of catalyst ethylenediamine into the reactor;
[0043] S2. Heating, controlling the reaction temperature to 230° C., reacting for 1 hour, and discharging to obtain a polyurethane degradation product, and the obtained degradation product has a hydroxyl value of 230.
Example Embodiment
[0044] Example 3
[0045] S1. Break 100 parts of polyurethane insoles, add 10 parts of diethylene glycol, 5 parts of butanediol, and 2 parts of catalyst ethanolamine into the reaction kettle;
[0046] S2. Heating, controlling the reaction temperature to 200°C, the reaction time for 2 hours, and discharging to obtain a polyurethane degradation product, and the obtained degradation product has a hydroxyl value of 280.
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Abstract
The invention discloses a rigid polyurethane foam material on the basis of polyurethane insole degradation products and a method for preparing the rigid polyurethane foam material. Rigid polyurethane foam combined polyether is prepared from the degradation products instead of 15-25% polyether polyol, the degradation products are directly obtained by means of alcoholysis of polyurethane insoles, and the rigid polyurethane foam combined polyether and isocyanate black materials are mixed with one another to obtain the rigid polyurethane foam material. The rigid polyurethane foam material and the method have the advantages that a raw material, namely polyurethane insole waste, is easily available, accordingly, the rigid polyurethane foam material and the method are favorable for solving environmental protection problems due to the industrial polyurethane insole waste, production processes are relatively simple, and the rigid polyurethane foam material and the method have high economical benefits; the rigid polyurethane foam material prepared from the polyurethane insoles has a low heat conductivity coefficient, is suitable for preparing heat-insulation materials and has extremely high popularization value.
Description
technical field [0001] The invention relates to the field of recycling of polymer materials, in particular, the invention relates to a hard polyurethane foam material prepared based on degradation products of polyurethane insoles and a preparation method thereof. Background technique [0002] The forms of polyurethane resin products include soft, semi-rigid and rigid foam plastics, elastomers, paint coatings, adhesives, sealants, synthetic leather coating resins, elastic fibers, etc., and are widely used in automobile manufacturing, refrigerator manufacturing, transportation, etc. Transportation, civil engineering, footwear, synthetic leather, fabrics, electromechanical, petrochemical, mining machinery, aviation, medical, agriculture and many other fields, in order to protect resources and the environment, now vigorously advocate the recycling of various rubber and plastic products, Realizing the recycling of polyurethane products will make great contributions to saving reso...
Claims
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