Preparation method of dimer acid polyol and application thereof in polyurethane foam

A technology of polyurethane foam and dimer acid is applied in the field of bio-derived polymer materials, which can solve the problems of non-degradability and environmental pollution of polymer materials, and achieve the effects of reducing dependence, high hydroxyl value and functionality.

Inactive Publication Date: 2017-04-19
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the non-degradability of polymer materials, it is widely used, but it also brings a series of environmental pollution and ecological problems to people. Therefore, it is more and more urgent to study environmentally friendly biodegradable materials as soon as possible.

Method used

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  • Preparation method of dimer acid polyol and application thereof in polyurethane foam
  • Preparation method of dimer acid polyol and application thereof in polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Add 169.8g of dimer acid and 27.6g of glycerol into a 500ml four-neck flask, then dropwise add 0.17g of dibutyltin dilaurate, feed nitrogen on one side, and add a water separator and condensing reflux device on the other side , Heat the oil bath to 140°C, stir for 20h, and measure the acid value and hydroxyl value.

[0039] Weigh 30g of the dimer acid polyol prepared above in a 250ml plastic cup, then add 0.60g of silicone oil, 0.15g of catalyst, 0.30g of water, 6.00g of 141b, mechanically stir at 700r / min for 3min, and then use the isocyanate index of 1.1 Add PM-200, stir at 2500r / min for 7s, pour the mixture into a mold, wait for 24 hours of aging, and cut samples for testing. The test results are shown in Table 1.

Embodiment 2

[0041] Add 169.8g of dimer acid and 55.2g of glycerol into a 500ml four-neck flask, then dropwise add 0.17g of dibutyltin dilaurate, feed nitrogen on one side, and add a water separator and condensing reflux device on the other side , Heat the oil bath to 140°C, stir for 20h, and measure the acid value and hydroxyl value.

[0042] Weigh 30g of the dimer acid polyol prepared above in a 250ml plastic cup, then add 0.60g of silicone oil, 0.15g of catalyst, 0.30g of water, 6.00g of 141b, mechanically stir at 700r / min for 3min, and then use the isocyanate index of 1.1 Add PM-200, stir at 2500r / min for 7s, pour the mixture into a mold, wait for 24 hours of aging, and cut samples for testing. The results are shown in Table 1.

Embodiment 3

[0044] Add 169.8g of dimer acid and 82.8g of glycerol into a 500ml four-neck flask, then dropwise add 0.17g of dibutyltin dilaurate, feed nitrogen on one side, and add a water separator and condensing reflux device on the other side , Heat the oil bath to 140°C, stir for 20h, and measure the acid value and hydroxyl value.

[0045] Weigh 30g of the dimer acid polyol prepared above in a 250ml plastic cup, then add 0.60g of silicone oil, 0.15g of catalyst, 0.30g of water, 6.00g of 141b, mechanically stir at 700r / min for 3min, and then use the isocyanate index of 1.1 Add PM-200, stir at 2500r / min for 7s, pour the mixture into a mold, wait for 24 hours of aging, and cut samples for testing. The results are shown in Table 1.

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Abstract

The invention discloses a preparation method of dimer acid polyol and an application thereof in polyurethane foam, and belongs to the field of biological source high polymer materials. According to the preparation method of the dimer acid polyol, provided by the invention, dimer acid and propanetriol are used as raw materials, and bis(lauroyloxy)dioctyl tin, zinc acetate, tetrabutyl titanate and the like are used as catalysts to perform an esterification reaction to obtain polyhydroxyl polyol. The dimer acid polyol provided by the invention has the advantages that the raw materials are wide in source, can be extracted from common plants, and are nontoxic and harmless. The polyurethane foam prepared by using the dimer acid polyol has the characteristics of good mechanical properties and excellent thermal insulation property.

Description

technical field [0001] The invention relates to the synthesis of a bio-source dimer acid polyol and its application in polyurethane foam, belonging to the field of bio-source polymer materials. Background technique [0002] Polyurethane foam is currently the best thermal insulation material in the world. It is a kind of polymer whose main chain contains -NHCOO-repeating structural units, and the English abbreviation is PU. It is polymerized from isocyanate (monomer) and hydroxyl compound. The production process is to prepare closed-cell foam containing carbamate group by using polyol and isocyanate with catalyst, foaming agent and other auxiliary agents at an appropriate ambient temperature. The polyols used in polyurethane foam are mainly polyether polyols and polyester polyols, which are extracted from petroleum, which is a non-renewable energy source. Faced with the current situation of increasing resource shortage and continuous social progress, this is contrary to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/68C08J9/08C08J9/14C08G63/52C08G101/00
CPCC08G18/68C08G18/7664C08G63/52C08J9/08C08J9/144C08J2203/10C08J2203/142C08J2203/184C08J2375/14C08G2110/005
Inventor 杨荣王波李锦春张鑫
Owner CHANGZHOU UNIV
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