Biodegradable material poly(hexanedioic acid-para-phthalic acid-butanediol ester) foaming particles preparation method

A technology of terephthalic acid and polyadipic acid, which is applied in the field of biodegradable polymer foaming materials, can solve the problems of unfavorable industrial production and long production cycle, and achieve the benefits of industrial production, short production cycle and promotion of application Effect
CN101613486AActive Publication Date: 2009-12-30浙江博发新材料股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
浙江博发新材料股份有限公司
Publication Date
2009-12-30

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Abstract

The invention discloses a biodegradable material poly(hexanedioic acid -para-phthalic acid-butanediol ester) (PBAT) foaming particles preparation method which is characterized in that the preparation method comprises the following steps: placing PBAT particles in an airtight container of which the temperature is 120-142 DEG C and the volume is 25 times or more than 25 times of the total volume of the particles, injecting 8-20MPa of pressure gas in the container, keeping the temperature and the pressure for 5-30min, and then relieving the pressure in a speed of 5-20MPa / s to the normal pressure to obtain the PBAT foaming particles. The cell diameter of the PBAT foaming particles is 10-260mu m and the density is 0.13-0.35g / cm<3>. The invention has simple process, easy operation, short production cycle and low cost, thus being applicable to the industrialized production.
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Description

Technical field:

[0001] The invention relates to a preparation method of a biodegradable material polyadipate-terephthalate-butylene glycol (PBAT) foamed particle, which belongs to the field of biodegradable macromolecular foaming materials. Background technique:

[0002] Foam is a polymer / gas composite material based on a polymer. Because this material generally has the properties of high specific strength, high impact strength, good heat insulation and good electrical insulation, it is widely used in packaging, aircraft and auto parts, sports equipment, building materials and thermal insulation materials, and in the fields of medicine, etc. There are three main types of foam plastics: polyurethane (EPU), polystyrene (EPS), and polyethylene (EPE), but they all have their limitations. EPU has monomer residues that are harmful to the human body and cannot be completely removed; EPS has been banned by the United Nations from the production and use of catering and packaging i...

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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