Polylactic acid polyurethane material and preparation method thereof

A technology of polyurethane material and polylactic acid, applied in the field of polyurethane foaming, can solve the problems of high rigidity, poor toughness and limited application prospect of pure polylactic acid, and achieve the effect of simple and easy preparation method and good biocompatibility.

Pending Publication Date: 2020-12-01

ZIBO ZHENGDA ENERGY SAVING NEW MATERIAL

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AI-Extracted Technical Summary

Problems solved by technology

[0003] However, due to the high rigidity and poor toughness of pure polylactic acid, it ...

Abstract

The invention belongs to the field of polyurethane foaming, and particularly relates to a polylactic acid polyurethane material and a preparation method thereof. The polylactic acid polyurethane material is prepared from a component A and a component B. The component A comprises the following raw materials in parts by weight: 50-200 parts of polyether polyol 1, 50-200 parts of polyether polyol 2 and 10-100 parts of TDI, wherein the functionality of the polyether polyol 1 is 2, and the molecular weight of the polyether polyol 1 is 1000-12000; and the functionality of the polyether polyol 2 is 3, and the molecular weight of the polyether polyol 2 is 1000-12000. The component B comprises the following raw materials in parts by weight: 20-200 parts of polylactic acid, 20-200 parts of a chain extender and 10-50 parts of a silane coupling agent. The prepared polylactic acid polyurethane material is good in biocompatibility, friendly to environment, resistant to bacteria and biodegradable, and the preparation method is simple in process.

Technology Topic

Silane couplingPolymer chemistry +7

Examples

Experimental program(3)
Comparison scheme(3)
Effect test(1)

Example Embodiment

[0031] Example 1

[0032] (1) 50 parts of polyether polyol DX-1 (functionality 2, molecular weight 1,000) and 50 parts of polyether polyol DX-2 (functionality 3, molecular weight 2,000) are poured into a three-necked flask, heated to 110℃ under the protection of nitrogen, dehydrated until the water content is less than 0.02%, cooled to 80℃, and 38 parts of TDI are dripped under the protection of nitrogen, and stirred for reaction for 2 hours.

[0033] (2) 20 parts of 20-mesh polylactic acid, 25 parts of 1,4- butanediol and 10 parts of vinyl triethoxysilane are stirred and mixed uniformly at 50℃ to obtain component B..

[0034] (3) Mix component A and component B according to the mass ratio of 3:1, and stir under the protection of nitrogen at 120℃ for 3h to obtain the product.

Example Embodiment

[0039] Example 2

[0040] (1) 150 parts of polyether polyol DX-1 (functionality 2, molecular weight 6,000) and 50 parts of polyether polyol DX-2 (functionality 3, molecular weight 8,000) are poured into a three-necked flask, heated to 110℃ under the protection of nitrogen, dehydrated until the water content is less than 0.02%, cooled to 90℃, and 30 parts of TDI are dripped under the protection of nitrogen, and stirred for reaction for 2 hours.

[0041] (2) 50 parts of 80-mesh polylactic acid, 55 parts of trimethylolpropane and 15 parts of vinyl trimethoxysilane are stirred and mixed uniformly at 50℃ to obtain component B..

[0042] (3) Mix component A and component B according to the mass ratio of 2:1, and stir under the protection of nitrogen at 140℃ for 4h to obtain the product.

Example Embodiment

[0047] Example 3

[0048] (1) 200 parts of polyether polyol DX-1 (functionality 2, molecular weight 10,000) and 100 parts of polyether polyol DX-2 (functionality 3, molecular weight 5,000) are poured into a three-necked flask, heated to 110℃ under nitrogen protection, dehydrated until the moisture content is less than 0.02%, cooled to 100℃, and 42 parts of TDI are dripped under nitrogen protection.

[0049] (2) Take 100 parts of 100-mesh polylactic acid, 25 parts of triethanolamine and 35 parts of vinyl tri (β-methoxyethoxy) silane, stir and mix them evenly at 50℃ to obtain component B.

[0050] (3) Mix component A and component B according to the mass ratio of 3:1, and stir under the protection of nitrogen at 160℃ for 5h to obtain the product.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Easy to prepare
good biocompatibility

Polylactic acid polyurethane material and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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