Degradable environment-friendly plastic bag and preparation method thereof

A plastic bag, environmental protection technology, applied in the field of plastic bags, can solve the problems of uneven mechanical properties of biodegradable plastics, uneven dispersion of plant fiber starch, poor mechanical properties of plastic bags, etc., to achieve excellent isotropy and improve aesthetics and recognition, and the effect of improving mechanical properties

Inactive Publication Date: 2021-02-26
深圳市正旺环保新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned related technologies, the inventors believe that plant fiber starch belongs to polyhydroxy polymer, which is easy to form intramolecular and intermolecular hydrogen bonds, and the interfacial compatibility between plant fiber st

Method used

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  • Degradable environment-friendly plastic bag and preparation method thereof
  • Degradable environment-friendly plastic bag and preparation method thereof
  • Degradable environment-friendly plastic bag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Table 1 is the raw material and weight of a kind of degradable environmental protection plastic bag of embodiment 1

[0042]

[0043]

[0044] Wherein, the preparation method of modified silicon dioxide is:

[0045] 1) Disperse 5kg of silicon dioxide in 20kg of absolute ethanol to obtain a suspension;

[0046] 2) Add 0.2kg of silane coupling agent to an aqueous alcohol solution with a pH of 3 for ultrasonic hydrolysis for 1 h. The silane coupling agent is aminopropyltriethoxysilane, and the aqueous alcohol solution is a mixed solution of absolute ethanol and deionized water and The volumes of absolute ethanol and deionized water are 5L respectively;

[0047] 3) Add the hydrolyzed silane coupling agent in step 2) to the suspension in step 1) at 60°C, then adjust the pH of the solution to 10, continue stirring for 3 hours, filter, wash and dry to obtain Modified silica.

[0048] A preparation method of a degradable environmental protection plastic bag, specifical...

Embodiment 2

[0054] Embodiment 2, the difference between this embodiment and embodiment 1 is:

[0055] The preparation method of modified silicon dioxide is:

[0056] 1) Disperse 5kg of silicon dioxide in 25kg of absolute ethanol to obtain a suspension;

[0057] 2) Add 0.5 kg of silane coupling agent to an aqueous alcohol solution with a pH of 4 for ultrasonic hydrolysis for 1 h. The silane coupling agent is trimethylethoxysilane, and the aqueous alcohol solution is a mixed solution of absolute ethanol and deionized water without The volumes of water ethanol and deionized water are 5L respectively;

[0058] 3) Add the hydrolyzed silane coupling agent in step 2) to the suspension in step 1) at 70°C, then adjust the pH of the solution to 11, continue stirring for 4 hours, filter, wash and dry to obtain Modified silica.

Embodiment 3

[0059] Embodiment 3, the difference between this embodiment and embodiment 1 is:

[0060] Wherein, the preparation method of modified silicon dioxide is:

[0061] 1) Disperse 5kg of silicon dioxide in 30kg of absolute ethanol to obtain a suspension;

[0062] 2) Add 0.8 kg of silane coupling agent to an aqueous alcohol solution with a pH of 3.5 for ultrasonic hydrolysis for 1 h. The silane coupling agent is aminopropyltriethoxysilane, and the aqueous alcohol solution is a mixed solution of absolute ethanol and deionized water and The volumes of absolute ethanol and deionized water are 5L respectively;

[0063] 3) Add the hydrolyzed silane coupling agent in step 2) to the suspension in step 1) at 70°C, then adjust the pH of the solution to 10.5, continue stirring for 4 hours, filter, wash and dry to obtain Modified silica.

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Abstract

The invention relates to the technical field of plastic bags, and particularly discloses a degradable environment-friendly plastic bag and a preparation method thereof. The degradable environment-friendly plastic bag is prepared from the following raw materials in parts by weight: 20-30 parts of poly(alkylene succinate), 15-20 parts of polylactic acid, 10-15 parts of polypropylene carbonate, 5-10parts of modified silicon dioxide, 5-10 parts of tetrapod-like zinc oxide whisker, 4-7 parts of graphene oxide, 3-5 parts of filler, 2-5 parts of plasticizer, 1-3 parts of lubricant, 3-4 parts of dispersing agent, 6-8 parts of kaolin, 3-6 parts of nano titanium dioxide, 1-2 parts of ultraviolet light absorber, 0.5-2 part of chlorinated paraffin and 1-2 parts of stabilizer. The preparation method comprises the steps of material mixing, granulation, film blowing, printing and slitting, and the plastic bag is prepared. The degradable environment-friendly plastic bag prepared by the preparation method disclosed by the invention not only has a good degradation effect, but also has excellent mechanical properties.

Description

technical field [0001] The application relates to the technical field of plastic bags, more specifically, it relates to a degradable environmentally friendly plastic bag and a preparation method thereof. Background technique [0002] In recent decades, the plastic industry has developed rapidly. The use of a large number of plastic products, especially plastic bags, has brought great convenience to human life. Plastic bags are cheap, light in weight, large in capacity and easy to store. The advantages are widely used. However, due to the chemical stability of the plastic itself, plastic bags will remain stable in the environment for a long time after they are discarded after use, resulting in the accumulation of a large amount of plastic bag waste in the environment, causing serious harm to the environment. The common methods of dealing with plastic bag waste are mainly incineration, landfill or recycling. These methods can no longer meet the requirements of human beings fo...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L69/00C08K13/06C08K9/06C08K3/36C08K7/08C08K3/04C08K3/26C08K3/22C08K5/098C08J5/18B65D65/46B29B9/06B29C55/28
CPCB29B9/06B29C55/28B65D65/466C08J5/18C08J2367/02C08J2467/04C08J2469/00C08K2003/2241C08K2003/2296C08K2201/011C08K2201/018C08L67/02C08L2201/06C08L2205/02C08L2205/035C08L67/04C08L69/00C08K13/06C08K9/06C08K3/36C08K7/08C08K3/042C08K3/26C08K3/22C08K5/098Y02W90/10
Inventor 郑瑞恋徐志彬郑宝如张坚洪
Owner 深圳市正旺环保新材料有限公司
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