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Self-catalytic anacardol/lignin-based polyurethane foam and preparation method thereof

A polyurethane foam and lignin-based technology, which is applied in the field of self-catalyzed polyurethane foam and its preparation, can solve environmental and human health hazards and other problems, and achieve the effect of high activity, rich and cheap raw materials

Active Publication Date: 2017-02-22
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, polyurethane foam materials added with amine catalysts will release a lot of odor during preparation and use, which will cause harm to the environment and human health.

Method used

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  • Self-catalytic anacardol/lignin-based polyurethane foam and preparation method thereof
  • Self-catalytic anacardol/lignin-based polyurethane foam and preparation method thereof
  • Self-catalytic anacardol/lignin-based polyurethane foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The self-catalyzed cardanol-based polyol (Ⅰ) was prepared by ring-opening cardanol after epoxidation and diethanolamine, with a hydroxyl value of 365 mg / g and a viscosity of 3060 mPa·s; 10%.

[0035] Mix 100.0g of cardanol-based polyol (I), 10.0g of lignin, 1.0g of deionized water and 2.5g of silicone oil evenly, then quickly add 135.4g of PAPI, stir quickly and mix well, then pour into the mold to foam freely. After the foam is cured at room temperature for 7 days, the compressive strength is 0.40MPa and the apparent density is 79.74kg / m 3 .

Embodiment 2

[0037] The self-catalyzed cardanol-based polyol (Ⅰ) was prepared by ring-opening cardanol after epoxidation and diethanolamine, with a hydroxyl value of 365 mg / g and a viscosity of 3060 mPa·s; 20%.

[0038] Mix 100.0g of cardanol-based polyol (I), 20.0g of lignin, 1.0g of deionized water and 2.5g of silicone oil evenly, then quickly add 151.6g of PAPI, stir quickly and mix well, pour into the mold to foam freely. After the foam is cured at room temperature for 7 days, the compressive strength is 0.44MPa and the apparent density is 81.84kg / m 3 .

Embodiment 3

[0040] The self-catalyzed cardanol-based polyol (Ⅰ) was prepared by ring-opening cardanol after epoxidation and diethanolamine, with a hydroxyl value of 365 mg / g and a viscosity of 3060 mPa·s; 5%.

[0041] Mix 100.0g of cardanol-based polyol (I), 5.0g of lignin, 1.0g of deionized water and 2.5g of silicone oil evenly, then quickly add 127.3g of PAPI, stir quickly and mix well, then pour into the mold to foam freely. After the foam is cured at room temperature for 7 days, the compressive strength is 0.36MPa and the apparent density is 77.39kg / m 3 .

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Abstract

The invention discloses self-catalytic anacardol / lignin-based polyurethane foam and a preparation method thereof. The preparation method comprises the following steps: utilizing anacardol and lignin renewable resources, introducing active alcoholic hydroxyl and tertiary amine groups into a molecular structure through chemical modification, and synthesizing high-activity polyether polyol with self-catalytic characteristics; and performing cross-linked foaming with isocyanate, thereby obtaining the biomass-based polyurethane foam. A catalyst does not need to be added in the process of preparing the anacardol / lignin-based polyurethane foam. According to the invention, the active alcoholic hydroxyl and the tertiary amine groups are introduced into anacardol and lignin molecules by virtue of chemical modification, so that the prepared polyether polyol has the self-catalytic characteristics and has high cross-linking reaction activity with the isocyanate; and moreover, the prepared polyurethane foam is the biomass-based polyurethane foam coming from natural renewable resources, the catalyst does not need to be added in the preparation process, and the method has environmental compatibility and is green and environmental-friendly.

Description

technical field [0001] The invention relates to a self-catalyzed polyurethane foam and a preparation method thereof, in particular to a self-catalyzed cardanol / lignin-based polyurethane foam and a preparation method thereof. Background technique [0002] Polyurethane foam is a polymer with repeating structural units of urethane chain segments made by the reaction of isocyanate, polyether polyol and other additives. It has porous, low relative density, temperature resistance, aging resistance, and organic resistance. Solvent erosion and easy molding processing, etc., are widely used in various fields of construction, aviation, medical treatment, transportation and daily life. However, because traditional polyurethane foam materials derived from petrochemical resources are difficult to degrade, their waste recycling is difficult and easy to cause environmental pollution; at the same time, tertiary amine compounds are usually added to catalyze the foaming reaction in the synthe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/65C08G18/64C08G18/32C08G101/00
CPCC08G18/329C08G18/6492C08G18/6535C08G18/7664C08G2110/0058C08G2110/0083
Inventor 霍淑平孔振武陈健吴国民刘贵锋
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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