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Polyurethane foaming plastic and its preparation method

A technology of foam plastics and polyurethane, applied in the field of materials, to achieve good resilience, meet the requirements of diversity, and high practical value

Active Publication Date: 2012-11-07
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And take 2,3-butanediol as the main component of polyol to synthesize polyurethane foam plastics and have not been reported so far

Method used

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  • Polyurethane foaming plastic and its preparation method
  • Polyurethane foaming plastic and its preparation method
  • Polyurethane foaming plastic and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 79g of adipic acid, 237g of 2,3-butanediol, and 0.7g of magnesium acetate into a 250mL three-necked flask equipped with a mechanical stirring device. After all the materials are added, equip the flask with a set of condensation device, vacuumize and fill with nitrogen three times, remove the oxygen in the reaction vessel to ensure that the transesterification reaction is carried out under nitrogen, and heat until the reaction mixture is completely melted / dissolved into a homogeneous phase After the system, the esterification reaction was stirred at 200° C. for 4 h. In the process, water was steamed out from the reaction mixture as a by-product until the amount of the distillate liquid reached 92% of the theoretical calculation amount (the theoretical calculation amount of water was adipic acid mole double the amount). 0.88 g of antimony trioxide was added to the reaction mixture as a polycondensation catalyst. The polymerization reaction was stirred under vacuum at...

Embodiment 2

[0058] Add 79g of adipic acid, 61g of 2,3-butanediol, 61g of 1,4-butanediol, and 0.06g of zinc acetate into a 250mL three-necked flask equipped with a mechanical stirring device. After all the materials are added, equip the flask with a set of condensation device, vacuumize and fill with nitrogen three times, remove the oxygen in the reaction vessel to ensure that the transesterification reaction is carried out under nitrogen, and heat until the reaction mixture is completely melted / dissolved into a homogeneous phase After the system, the esterification reaction was stirred at 205° C. for 3.5 h. During this process, water was steamed out from the reaction mixture as a by-product until the amount of the distillate reached 92% of the theoretical calculation amount (the theoretical calculation amount of water was adipic acid twice the molar mass). 0.04 g of tetra-n-butyl titanate was added to the reaction mixture as a polycondensation catalyst. The polymerization reaction was st...

Embodiment 3

[0063] Add 94g of dimethyl adipate, 90g of 2,3-butanediol, 20g of ethylene glycol, and 0.07g of magnesium acetate into a 250mL three-necked flask equipped with a mechanical stirring device. After all the materials are added, equip the flask with a set of condensation device, vacuumize and fill with nitrogen three times, remove the oxygen in the reaction vessel to ensure that the transesterification reaction is carried out under nitrogen, and heat until the reaction mixture is completely melted / dissolved into a homogeneous phase After the system, the esterification reaction was stirred at 210° C. for 3 h. During this process, methyl alcohol was steamed out as a by-product from the reaction mixture until the amount of the distillate liquid reached 92% of the theoretical calculation amount (the theoretical calculation amount of methyl alcohol was adipic acid di twice the molar amount of methyl ester). 0.035 g of tetra-n-propyl titanate was added to the reaction mixture as a polyc...

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Abstract

The invention belongs to the technical field of materials and discloses a polyurethane foaming plastic and its preparation method. The polyurethane foaming plastic has the constitutional repeating unit as defined in the specification, wherein R is selected as shown in the specification; R' has the constitutional repeating unit as shown in the specification; R1 and R2 are respective selected as shown in the specification; n=1-1000; m=1-100; o=2-11; and p=2-13. The invention also discloses the preparation method of the above polyurethane foaming plastic. The polyurethane foaming plastic disclosed in the invention has advantages of light weight, excellent heat insulation and sound insulation performance, good chemical resistance and temperature toleration and high mechanical strength, and is widely applied in furniture, train, automobile and heat insulation and sandwich supporting materials.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a polyurethane foam and a preparation method thereof. Background technique [0002] For nearly a century, with the rapid development of industrialization around the world, human production and life have been improving day by day. In the process of industrialization, petroleum, a non-renewable resource, is the most important chemical raw material for human production and life. It is indispensable. However, due to the large amount of CO in the process of use and in the final waste 2 Emissions have caused a series of problems such as global warming, sandstorms, droughts, and floods, which directly threaten the survival of human beings. Therefore, it is necessary to develop environmentally friendly materials and use renewable resources to protect the earth, the planet on which human beings depend. It has become the common responsibility and obligation of all countries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08G18/42C08G63/16C08G63/20C08G63/86C08G63/85C08G101/00
Inventor 赵冬云杨桂生
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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