Unlock instant, AI-driven research and patent intelligence for your innovation.

Compostable degradable plastic film and preparation method thereof

A plastic film and compost degradation technology, applied in the field of polymer materials, can solve problems such as water and soil hazards, and achieve the effects of high degradation rate and excellent mechanical properties

Pending Publication Date: 2022-01-21
浙江通力新材料科技股份有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More than half of the plastics in the world will eventually be directly landfilled or flow into the natural environment. Whether it is on land or in the ocean, it will take hundreds of years or even longer for conventional plastics to completely decompose in nature, which means that these white garbage will exist for a long time , and will cause greater harm to water and soil

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 10 parts of cornstarch into the high-speed mixer, blend and dehydrate for 24 hours at 80°C and 400rpm; then adjust the speed of the high-mixer to 50rpm, add 4 parts of epoxy soybean oil while stirring at this speed, add After the completion, turn the speed of the high mixer to 400rpm and mix for 30mi; then add 64 parts of PBAT, 20 parts of PGA, 1 part of γ-aminopropyltriethoxysilane and 1 part of acrylic acid and ethylene copolymer wax, and the high mixer Set the temperature at 25°C and blend at 400rpm for 15 minutes. After blending evenly, add it to a twin-screw extruder for extrusion and granulation to obtain fully biodegradable granules, and then add the fully biodegradable granules to a low-pressure film blowing machine for extrusion and film blowing. Obtain compostable degradable plastic film.

[0026] Extrusion granulation processing parameters are as follows:

[0027] Equipment: TSE-75 PBAT special twin-screw extrusion granulator, L / D=48:1

[0028] Temperat...

Embodiment 2

[0035] Add 15 parts of cornstarch into the high-speed mixer, blend and dehydrate for 24 hours at 80°C and 400rpm; then adjust the speed of the high-speed mixer to 50rpm, add 8 parts of epoxy soybean oil while stirring at this speed, and add After the completion, turn the speed of the high mixer to 400rpm and mix for 30mi; then add 60 parts of PBAT, 15 parts of PGA, 1 part of γ-aminopropyltriethoxysilane and 1 part of acrylic acid and ethylene copolymer wax, and the high mixer Set the temperature at 25°C and blend at 400rpm for 15 minutes. After blending evenly, add it to a twin-screw extruder for extrusion and granulation to obtain fully biodegradable granules, and then add the fully biodegradable granules to a low-pressure film blowing machine for extrusion and film blowing. Obtain compostable degradable plastic film.

[0036] Extrusion granulation processing parameters are as follows:

[0037] Equipment: TSE-75 PBAT special twin-screw extrusion granulator, L / D=48:1

[0038...

Embodiment 3

[0045] Add 20 parts of cornstarch into the high-speed mixer, blend and dehydrate for 24 hours at 80°C and 400rpm; then adjust the speed of the high-speed mixer to 50rpm, add 12 parts of epoxy soybean oil while stirring at this speed, add After the completion, turn the speed of the high mixer to 400rpm, and mix for 30mi; then add 55 parts of PBAT, 10 parts of PGA, 1.5 parts of γ-aminopropyltriethoxysilane and 1.5 parts of acrylic acid and ethylene copolymerized wax, and the high mixer Set the temperature at 25°C and blend at 400rpm for 15 minutes. After blending evenly, add it to a twin-screw extruder for extrusion and granulation to obtain fully biodegradable granules. Then add the fully biodegradable granules to a low-pressure film blowing machine for extrusion and film blowing. Obtain compostable degradable plastic film.

[0046] Extrusion granulation processing parameters are as follows:

[0047] Equipment: TSE-75 PBAT special twin-screw extrusion granulator, L / D=48:1

[...

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
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
particle diameteraaaaaaaaaa
water contentaaaaaaaaaa
Login to View More

Abstract

The invention discloses a compostable and degradable plastic film and a preparation method thereof, and belongs to the technical field of high polymer materials. The compostable and degradable plastic film comprises the following raw materials by weight: 55-80 parts of PBAT, 5-25 parts of PGA, 0.5-1.5 parts of a coupling agent, 0.5-1.5 parts of a lubricant, 5-30 parts of a biomass filler, and 2-15 parts of a plasticizer. The preparation method of the compostable degradable plastic film comprises the following steps: uniformly mixing the PBAT, the PGA, the biomass filler, the plasticizer, the coupling agent and the lubricant with different contents in low-speed mixing equipment to obtain a premix; enabling the premix to be subjected to mixing, melting, extrusion and granulation through a double-screw extruder, and obtaining full-biodegradable plastic particles; and preparing the full-biodegradable plastic particles into the full-biodegradable plastic film through a blow molding process. The plastic film capable of being composted and degraded is excellent in mechanical property and high in degradation rate.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a compostable and degradable plastic film and a preparation method thereof. Background technique [0002] Since 1950, about 8.3 billion tons of plastics have been produced globally, and 2.5 billion tons are still in use. Of the plastics that are no longer used, 4.9 billion tons are directly discarded or landfilled, and only 100 million tons are recycled. According to Our World in Data estimates, as of 2015, 55% of the world's waste plastics are still discarded, 25% are incinerated, and only 20% are recycled. More than half of the plastics in the world will eventually be directly landfilled or flow into the natural environment. Whether it is on land or in the ocean, it will take hundreds of years or even longer for conventional plastics to completely decompose in nature, which means that these white garbage will exist for a long time , and will cause greater harm to wat...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L3/02C08L91/00C08J5/18
CPCC08J5/18C08J2367/02C08J2467/04C08J2403/02C08J2491/00
Inventor 王相友何清洋刘振中蒋水明俞威龙王勇军
Owner 浙江通力新材料科技股份有限公司