A kind of bio-based phosphorus-containing starch and its preparation method and application

A bio-based, starch technology, applied in the field of modified starch, can solve the problems of poor compatibility between starch and matrix plastics, poor thermal stability of starch, and inability to meet application requirements, and achieves the ability to promote carbon formation, high phosphorus content, high yield effect
CN106632703BActive Publication Date: 2019-04-02NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Publication Date
2019-04-02

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Abstract

The invention discloses bio-based phosphoric starch and a preparation method and application thereof. The preparation method comprises the steps that 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, maleic anhydride and a first organic solvent are mixed, reflux reaction is performed at the temperature of 40-100 DEG C and under protective gas for 12-36 hours, reduced pressure distillation and drying are performed to obtain a product 1; starch, a catalyst and a second organic solvent are mixed, heating activation is performed at the temperature of 60-120 DEG C and under protective gas for 2-24 hours to obtain an activated starch solution; the product 1 is added to the cooled activated starch solution, reaction continues at the temperature of 30-90 DEG C and under protective gas for 12-64 hours, and washing and drying are performed to obtain the bio-based phosphoric starch. The bio-based phosphoric starch has high grafting rate and high phosphorus content, both the thermal stability of the obtained bio-based phosphoric starch and the compatibility with a matrix resin interface are significantly improved, and the practical application requirements can be met.
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Description

technical field

[0001] The invention relates to the technical field of modified starch, in particular to a bio-based phosphorus-containing starch and a preparation method and application thereof. Background technique

[0002] With the increasingly severe environmental problems and the oil crisis, people's research on sustainable materials has gradually increased. Bio-based materials, as fully biodegradable green materials, fully meet the current development needs and have received widespread attention. Among them, polylactic acid (PLA), as the bioplastic with the most development potential, has excellent mechanical properties and good processing performance, and is widely used in the automotive industry, electrical facilities and other fields. However, its flammability has greatly limited its promotion in these fields. At present, due to the advantages of low toxicity, environmental protection and smoke suppression, intumescent flame retardant has replaced the traditional h...

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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