Biodegradable heat-resistant sheet and preparation method thereof

A biodegradable and heat-resistant technology, applied in the field of biodegradable heat-resistant sheet and its preparation, can solve the problems of calendered product cost and difficult commercialization, limited application range, poor heat resistance, etc., and achieve excellent physical and mechanical properties, Wider range of applications and good heat resistance

Active Publication Date: 2016-05-25
SHENZHEN GREENNATURE BIODEGRADABLE TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent (publication number CN101831086A) proposes a starch-based and PVA modified sheet for tableware, etc., but the starch and the glycerin used are easy to absorb moisture, which is not conducive to preservation, and the safety and service life are too short;
[0005] Chinese patent (publication number CN102352093A) proposes a method for preparing a double-sided matting biodegradable sheet, which has obvious progress in processing, product appearance and performance, but the blending of polylactic acid, PBAT, and calcium carbonate cannot solve the problem of heat resistance. Problem, the product is still only suitable for low temperature environment;
[0006] The Chinese patent (publication number CN102744850A) proposes a method for a two-color biodegradable sheet, but only solves the color processing problem, and does not propose a solution to the heat resistance and other appearance problems of the sheet product;
[0007] Chinese patent (publication number CN101157793A) proposes a method for preparing heat-resistant polylactic acid products, but this method is realized by means of banburying, hot-pressing molding and isothermal crystallization, and heat-resistant sheets cannot be prepared on ordinary sheet forming machines , the process is complicated, and the scope of applicable products is very narrow;
[0008] Chinese patent (publication number CN1931907A) proposes a polylactic acid sheet preparation method, but uses a starch system, which has fatal defects in heat resistance and hydrolysis aging;
[0009] Chinese patent (publication number CN101362853A) has proposed a kind of preparation method of low-cost recyclable polylactic acid sheet material, and this method provides the molding proc...

Method used

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  • Biodegradable heat-resistant sheet and preparation method thereof
  • Biodegradable heat-resistant sheet and preparation method thereof
  • Biodegradable heat-resistant sheet and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] By weight percentage, add 3% of 8000 mesh talc powder, 2% of titanium dioxide, 0.75% of PE wax, 0.5% of calcium stearate, 0.5% of BASF chain extender, 0.1% of 10100.1%, and 1.15% of carboimide into a high-speed mixer at 40°C for mixing After 20 minutes, put it in No. B weight loss meter for later use. After dehumidifying and drying P3HB4HB10%, PBS37%, and polylactic acid 45% with 4HB content of 6%, add it to a high-speed mixer and mix it at room temperature for 15 minutes. At the same time, it enters the twin-screw extruder for melt blending, water-stretched granulation, and can be used to prepare various sheets and other products. Dry the above resin and add it to a sheet extruder with a screw diameter of 130mm, and prepare a 1.0-1.8mm thick sheet at an extrusion temperature of 160-195°C and an extrusion speed of 40rpm, which has excellent appearance and good Comprehensive performance.

Embodiment 2

[0049] By weight percentage, 10000 mesh talcum powder 8%, 6000 mesh mica 3%, EBS0.5%, zinc stearate 0.5%, titanate coupling agent 0.2%, 10100.1%, phosphite antioxidant 0.1 %, UV5270.3%, carboimide 0.3%, add high-speed mixer at 50°C and mix for 20 minutes, then put it in No. B weight loss meter for later use, add PHBV5%, PBS40%, polylactic acid 40%, PBAT2% with HV content of 10% After mixing in a high-speed mixer at room temperature for 10 minutes, place the No. A weight loss meter, and enter the twin-screw extruder for melt blending with the No. B compound at the same time, and water-cooled strands for granulation. It can be used to prepare various sheets and other products. Dry the above resin and add it to a sheet extruder with a screw diameter of 130mm, and prepare a 0.5-1.65mm thick sheet at an extrusion temperature of 160-185°C and an extrusion speed of 30rpm, which has excellent appearance and good Comprehensive performance.

Embodiment 3

[0051] By weight percentage, 5% of 3000 mesh wollastonite, 1% of nano-montmorillonite, 4% of 5000 mesh kaolin, 0.5% of TAF, 0.5% of stearic acid, 0.1% of titanium aluminate composite coupling agent, 10760.1% , tris(2,4-di-tert-butylphenyl) phosphite 0.1%, maleic anhydride 0.2%, dicumyl peroxide 0.1%, carboimide 0.4%, add high-speed mixer at 50°C and mix for 30min and place B Put PBSA5%, PBS38%, polylactic acid 45% dry, add high-speed mixer at room temperature and mix for 8 minutes, place A weight loss meter, and enter the twin-screw extruder with B compound at the same time for melting and blending , Strand granulation, can be used to prepare various sheets and other various products. Dry the above resin and add it to a sheet extruder with a screw diameter of 130mm, and prepare a 0.3-1.2mm thick sheet at an extrusion temperature of 160-190°C and an extrusion speed of 20-35rpm, which has excellent appearance and Good overall performance.

[0052] The properties are shown in T...

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Abstract

The invention provides a biodegradable heat-resistant sheet and a preparation method thereof. The biodegradable heat-resistant sheet is prepared from, by weight, 20-50% of polylactic acid, 35-55% of PBS, 0-10% of polyester, 1-25% of nucleation enhancer, 0.5-5% of an auxiliary and 0-0.5% of an anti-UV agent. The biodegradable heat-resistant sheet and the preparation method solve the problems that existing polylactic acid sheets are high in brittleness, not resistant to heat, high in sheet rolling cost, narrow in application range and the like. The biodegradable sheet is low in cost, can be efficiently produced, has good physical and mechanical properties, machinability and heat resistance, and can be widely applied to the fields such as electronic products, cosmetics and disposable heat-resistance articles. The application range of biodegradable products is widened.

Description

technical field [0001] The invention relates to a biodegradable heat-resistant sheet and a preparation method thereof. Background technique [0002] Polymer materials have been used for decades, which has brought great changes to people's lives. We cannot live without polymer materials and their products, but polymer materials and their wastes take hundreds of years to decompose. The convenience brought by human beings has also brought serious "white pollution", which has become one of the key issues of global concern. The research and development of biodegradable polymers has received the attention of governments and people of various countries, and is regarded as the strategic direction of new materials in the future, and it is also the best way to solve white pollution. However, in the past few years, due to technical bottlenecks and limitations in application fields, biodegradable materials were mainly used in the fields of starch-based, film packaging, and low-temperat...

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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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08K13/02C08K3/34C08K3/22C08K5/098C08K5/134C08K5/09C08K5/526
CPCC08K2201/011C08K2201/014C08L67/02C08L67/04C08L2201/06C08L2201/08C08L2205/02C08L2205/025C08L2205/03C08L2205/035C08K13/02C08K3/34C08K5/098C08K5/1345C08K3/346C08K5/09
Inventor 蓝小平
Owner SHENZHEN GREENNATURE BIODEGRADABLE TECH LTD
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