PHBV microcellular foam material and preparation method thereof

A microporous foam material and cell technology, applied in the field of foam materials, can solve the problems of high crystallinity, restricting the foamability of PHBV materials, etc., and achieve the effect of uniform distribution of cells and protection of the ecological environment
CN111363326AActive Publication Date: 2020-07-03宁波致微新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
宁波致微新材料科技有限公司
Publication Date
2020-07-03

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Abstract

The invention relates to the technical field of foam materials, in particular to a PHBV microcellular foam material and a preparation method thereof. The PHBV microcellular foam material is prepared from a PHBV composition through a foaming process, wherein the weight percentage of PHBV used in the PHBV composition is 90-100%, the weight-average molecular weight of the used PHBV is 30000-350000, and the molar content of hydroxyvalerate is 1-20 mol%. A two-step foaming method is adopted in the invention. The prepared foam material is small in pore diameter and large in pore density, and a foundation is provided for application of PHBV.
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Description

technical field

[0001] The invention relates to the technical field of foaming materials, in particular to a PHBV microporous foaming material and a preparation method thereof. Background technique

[0002] At present, foam materials have become an indispensable chemical product in our life and industrial and agricultural production. Traditional foam materials are mainly based on petroleum-based polymer materials. However, petroleum-based polymer materials are not only non-renewable resources, but also cannot be naturally degraded by microorganisms, which brings a huge burden to the ecological environment and causes serious white pollution problems. Therefore, it is very important to study biodegradable polymer foam materials to solve the existing environmental problems.

[0003] Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV for short) is a completely biodegradable copolymer of polyhydroxybutyrate and polyhydroxyvalerate, which is synthesized by bacterial fermentation ...

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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