Lignin/polyether polyol impact-resistant and self-healing coating and preparation method thereof

A technology of polyether polyol and lignin, which is applied in the direction of lignin coating, polyether coating, coating, etc., can solve the problems of complex preparation process, poor impact strength, non-self-healing, etc., and achieve simple and efficient preparation process , Improve green properties, good adhesion performance effect
CN112646495AActive Publication Date: 2021-04-13SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2021-04-13

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Abstract

The invention belongs to the technical field of impact-resistant and self-healing coating materials, and particularly relates to a lignin / polyether polyol impact-resistant and self-healing coating and a preparation method thereof. The method comprises the steps: taking industrial lignin as a raw material, and obtaining purified lignin with high purity and a specific molecular weight range through purification and molecular weight grading; mixing part of purified lignin with high purity and the specific molecular weight range with styrene, and carrying out micro-nanocrystallization to obtain lignin-styrene micro-nano particles; and blending the rest purified lignin with high purity and the specific molecular weight range, lignin-styrene micro-nano particles and polyether polyol in the presence or absence of a solvent to obtain the lignin / polyether polyol impact-resistant self-healing coating. The coating has good adhesion performance and functions of impact resistance, self-healing and the like, the preparation process is simple, efficient, green and environmentally friendly, the raw materials are cheap and easy to obtain, and the green characteristic can be greatly improved.
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Description

technical field

[0001] The invention belongs to the technical field of impact-resistant and self-healing coating materials, in particular to a lignin / polyether polyol impact-resistant and self-healing coating and a preparation method thereof. Background technique

[0002] Lignin is the second largest biomass resource after cellulose in plants, and is known as one of the most abundant green resources that can be utilized by humans in the 21st century. Impact-resistant composite materials are indispensable and important materials for the development of national economy and high technology, and have a wide range of uses. Traditional acrylics, polyurethanes, etc. rely on petrochemical products, and can only be used on specific materials and smooth surfaces. They are easily scratched by external forces, and do not have impact resistance and self-healing functions.

[0003] Lignin is degradable and non-toxic. It is a natural polymer compound with a three-dimensional network struc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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