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A high-strength environmentally friendly lightweight polyurethane foam using hyperbranched polyester polyol as a crosslinking agent and its preparation method

A technology of hyperbranched polyester and polyurethane foam is applied in the field of high-strength, environment-friendly and lightweight polyurethane foam and its preparation, and can solve the problems of high foam volatilization and poor foam strength.

Active Publication Date: 2021-06-15
浙江华江科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor strength of light polyurethane foam and foam volatilization of a large amount of VOCs, the present invention synthesizes a hyperbranched polyester with a large number of active hydroxyl groups at the end of the molecule through a simple and environmentally friendly method; the synthetic hyperbranched polyester polyol is used as A cross-linking agent for lightweight polyurethane foam, and through rational design of the formula, a high-strength environmentally friendly lightweight polyurethane foam and its preparation method are provided

Method used

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  • A high-strength environmentally friendly lightweight polyurethane foam using hyperbranched polyester polyol as a crosslinking agent and its preparation method
  • A high-strength environmentally friendly lightweight polyurethane foam using hyperbranched polyester polyol as a crosslinking agent and its preparation method
  • A high-strength environmentally friendly lightweight polyurethane foam using hyperbranched polyester polyol as a crosslinking agent and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) In the reaction device equipped with stirring, temperature control and nitrogen protection, keep the addition temperature at 142°C, add 3.3g of dipropylene glycol, 0.02g of PTSA, and 10.7g of dimethylolpropionic acid to the reaction vessel in sequence, to Stir and react at a speed of 600r / min for 3 hours; keep the reaction temperature and stirring speed constant, add 0.04g PTSA and 21.4g dimethylol propionic acid to the reaction vessel in turn, and react for 4.5 hours; keep the reaction temperature and stirring speed constant , sequentially add 0.08g PTSA, 42.8g dimethylol propionic acid to the reaction vessel, and react for 4.5 hours; after the reaction, pour out the product, return to room temperature and solidify, and grind the hyperbranched polyester polyol into powder.

[0029] (2) Add 222g combined polyol, 18g hyperbranched polyester polyol powder, 1.8g organosilicon foam stabilizer, 1.2g catalyst, 18g deionized water in the feed kettle, and hyperbranched polyo...

Embodiment 2

[0034] (1) In the reaction device installed with stirring, temperature control and nitrogen protection, keep the addition temperature at 142°C, add 3.3g of dipropylene glycol, 0.02g of PTSA, and 10.7g of dimethylol propionic acid to the reaction vessel in sequence, to Stir and react at a speed of 600r / min for 3 hours; keep the reaction temperature and stirring speed constant, add 0.04g PTSA and 21.4g dimethylol propionic acid to the reaction vessel in turn, and react for 4.5 hours; keep the reaction temperature and stirring speed constant , add 0.08g PTSA, 42.8g dimethylolpropionic acid to the reaction container in turn, and react for 5 hours; after the reaction, pour out the product, return to room temperature and solidify, and grind the hyperbranched polyester polyol into powder.

[0035](2) Add 198g combined polyol, 6g hyperbranched polyester polyol powder, 6g organosilicon foam stabilizer, 1.2g catalyst, 12g deionized water in the feed kettle, with the stirring speed of 650...

Embodiment 3

[0040] (1) In the reaction device equipped with stirring, temperature control and nitrogen protection, keep the addition temperature at 140°C, add 3.3g of dipropylene glycol, 0.02g of PTSA, and 10.7g of dimethylolpropionic acid to the reaction vessel in sequence, to Stir and react at a speed of 850r / min for 3 hours; keep the reaction temperature and stirring speed constant, add 0.04g PTSA and 21.4g dimethylolpropionic acid to the reaction vessel in turn, and react for 4.5 hours; keep the reaction temperature and stirring speed constant , sequentially add 0.08g PTSA, 42.8g dimethylol propionic acid to the reaction vessel, and react for 4.5 hours; after the reaction, pour out the product, return to room temperature and solidify, and grind the hyperbranched polyester polyol into powder.

[0041] (2) Add 240g combined polyol, 12.6g hyperbranched polyester polyol powder, 3g organosilicon foam stabilizer, 2.4g catalyst, 30g deionized water in the feed kettle, with the stirring speed ...

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Abstract

The invention provides a high-strength environment-friendly lightweight polyurethane foam using hyperbranched polyester polyol as a crosslinking agent and a preparation method thereof. It uses synthetic hyperbranched polyester as a crosslinking agent to prepare high-strength lightweight polyurethane foam, and uses UV-modified biochar powder to further improve the problems of high foam odor and serious VOCs volatilization, and finally obtains high-strength, environmentally friendly and lightweight polyurethane foam. polyurethane foam.

Description

technical field [0001] The invention relates to a high-strength, environment-friendly and lightweight polyurethane foam and a preparation method thereof, and more particularly relates to a high-strength, environment-friendly and lightweight polyurethane foam using hyperbranched polyester polyol as a crosslinking agent and a preparation method thereof. Background technique [0002] In the field of high molecular polymers, compared with general linear polymers, highly branched polymer molecules have a three-dimensional spatial topology and a large number of active functional groups, which can endow materials with excellent strength and special functionality. As a kind of highly branched polymer, hyperbranched polymer can be synthesized by one-step method without purification in the preparation process, and has practical application value in industry. [0003] In recent years, the lightweight of materials has become a research hotspot in construction, automobile, military and o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/664C08J9/04C08G63/78C08G18/42
Inventor 丁响亮马国维黄培林周立楼娣祝超
Owner 浙江华江科技股份有限公司
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