Starchlike biological degradatable plastic mother material and its preparation method

A technology of biodegradable plastics and starch, applied in adhesive types, grafted polymer adhesives, adhesives, etc., can solve the problems of poor hygienic performance, large investment, and many processes, and achieve excellent compatibility Effect

Inactive Publication Date: 2005-07-20
SUZHOU HANFENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the defects of large investment, many processes, long production cycle, poor hygienic performance and high cost in the prior art, and provides a starch-based biodegradable plastic masterbatch with simple production process, low cost and good hygienic performance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the above-mentioned starchy biodegradable plastic masterbatch comprises the following steps:

[0029] (1) Starch modified grafting:

[0030] ① Starch refinement: Start the ACM-60 air-flow vortex micronizer, slowly put about 100 mesh of native starch into the ACM-60 air-flow vortex micronizer, adjust the output classification speed of the refined starch to the fineness of the output The starch particle size is about 1200-2000 mesh at 10um-6um, and then bagged for use.

[0031] ②Starch modification and grafting: Start the high-speed mixer of the 500 / 1000 high-speed cold mixing unit, put 100 parts by weight of refined starch into the high-speed mixer, and add 3 to 30 parts of Lubricate the plasticizer, then stir at high speed for five minutes, and then the temperature rises to 100°C. Add the corresponding amount of 0.5 to 3 parts of starch graft modifier three times at intervals of two minutes, and stir at high speed for five minutes, and the tem...

Embodiment 1

[0037] 1 group 190℃~

[0038] 1 group 120℃~

[0039] After heating to the set temperature, keep warm for 15 to 30 minutes, turn on the host, and slowly adjust the speed to 200-450 rpm. After the twin-screw is in normal operation, adjust the temperature to 120°C to 150°C, pay attention to control the current of the main engine between 180A and 220A, and control the melt pressure between 4 and 9, turn on the vacuum exhaust device, and control the vacuum degree at about 0.06 ~0.09Mpa. Adjust the speed of the twin-screw for metering and feeding at about 6 to 20. When the material is discharged from the die, adjust the cutting speed of the strand granulation to a suitable granular shape to make PP grade starch with a starch content of 50%. Degradable plastic masterbatch. This product is suitable for sheet material, casting blister, tableware, handicraft packaging, injection molding products and other product materials.

Embodiment 2

[0041] (1) Start the ACM-60 air vortex micronizer, slowly put 1000kg of native corn starch of about 100 mesh into the ACM-60 air vortex micronizer, and adjust the output classification speed of the refined starch to the fineness of the output The starch particle size is about 2000 mesh below 6.5um.

[0042] (2) Start the high-speed mixer operation of the 500 / 1000 high-speed cold mixing unit, put 150kg of refined starch into the high-speed mixer, add 20kg of glycerin after the high-speed stirring temperature rises to about 60°C, and then stir for five minutes at high temperature. Raise to 90°C, add corresponding amount of 1.8kg of DH-411 aluminate coupling agent three times at intervals of two minutes each time, and then stir for five minutes at high temperature to rise to 120°C, add 2kg of sodium stearate, and then Stir at high speed for three minutes, and add 3kg of polyethylene wax. Stir on high for another minute and mix the materials in the pot evenly, put it in the cold ...

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PUM

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Abstract

The present invention is biodegradable plastic mother material and its preparation process, and has the features of simple production process, low cost, etc. The biodegradable plastic mother material is prepared with material including starch, starch grafting modifier, bonding resin, bonding resin grafting modifier, bonding resin grafting initiator, lubricating plasticizer, stabilizer, dispersant and degradation assistant. The preparation process includes starch grafting modification, bonding resin grafting modification and other steps. The biodegradable plastic mother material has excellent biocompatibility, high starch content and high biodegrading performance.

Description

Technical field: [0001] The invention relates to a starch biodegradable plastic masterbatch and a preparation method thereof. Background technique: [0002] At present, the disclosed starch-based biodegradable plastic masterbatches such as 99100726.3 and 00119372.4 and 01134820.8 and other patents require homogenate impregnation of starch, liquid dehydration, slurry refinement, coupling and high-mix reformation. Sexuality, twin-screw extrusion granulation and other treatments require a large investment in equipment, many processes, and a long production cycle. Moreover, it is only a modified treatment of starch, so that the amount of starch added is small, the hygienic performance is poor, and the cost is high. Invention content: [0003] The invention solves the defects of large investment, many processes, long production cycle, poor hygienic performance and high cost in the prior art, and provides a starch-based biodegradable plastic masterbatch with simple production pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/00C08F251/00C08K5/00C08K5/09C08L3/00C08L3/02C08L3/04C08L23/04C08L23/12C08L51/02C08L67/00C09J151/02
CPCC08K2201/018C08F251/00C08L3/00C08L51/02C08L3/04C08K5/0033C09J151/02C08B31/00C08L2666/02
Inventor 陈明忠
Owner SUZHOU HANFENG NEW MATERIAL
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