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Plastic degrading composition, use of same and plastic and product containing same

A composition and technology for degrading plastics, applied in the field of plastics and plastic products, can solve the problems of reduced mechanical properties of plastics, not easy to degrade, and limited utilization of solar radiation.

Active Publication Date: 2010-03-10
济南中科广源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxygen-biodegradable plastics, as a kind of plastics made by comprehensive utilization of oxidative degradation and biodegradation technologies, not only overcome the defect that photocatalysis is not easy to degrade when there is no light or insufficient light, but also overcome the complex process of general fully biodegradable plastics. However, the transition metal ions such as cobalt and cerium contained in this type of oxidative-biodegradable plastic can only absorb visible light, and the utilization rate of solar radiation is still limited, and due to the doping of a large number of small molecules lead to a decrease in the mechanical properties of the plastic

Method used

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  • Plastic degrading composition, use of same and plastic and product containing same
  • Plastic degrading composition, use of same and plastic and product containing same
  • Plastic degrading composition, use of same and plastic and product containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 Components and dosage (percentage by weight) of the environmental degradation composition——Da Zhuang No. 1

[0043] Low-density polyethylene resin (Qilu Petrochemical TN26) 90

[0044] Nano-TiO 2 (Hangzhou Wanjing New Material Co., Ltd.) 2

[0045] Cobalt stearate (Jinan Jinletai Chemical Co., Ltd.) 6

[0046] Dibutyl hydroxytoluene (Tianjin Bodi Chemical Company) 2

[0047] Weigh various raw materials according to the above formula, and place them in a high-speed mixer and stir for 1-3 minutes. The above-mentioned mixed material was mixed with a twin-screw granulator (YD-40A / 400-22-44 / DZ, Shantou Yingdong Electric Co., Ltd., Guangdong Province, with a length-to-diameter ratio of 25:1, and the temperature of each extrusion section was 50-250°C, the rotation speed of the extruder is 25-450 rpm) to extrude and granulate.

Embodiment 2

[0048] Example 2 Components and dosage (percentage by weight) of the environmental degradation composition——Da Zhuang No. 2

[0049] LDPE resin 88

[0050] Nano-TiO 2 1

[0051] Cobalt decanoate (Tianjin Bodi Chemical Company) 8

[0052] Citric acid (Jinan Jinletai Chemical Co., Ltd.) 3

[0053] According to the above formula, various raw materials were weighed, and placed in a high-speed mixer (YD-GH-100A / DZ, Shantou Yingdong Electric Co., Ltd., Guangdong Province) to stir for 1-3 minutes. The above-mentioned mixed material is extruded with a twin-screw granulator (length-to-diameter ratio 25:1, the temperature of each extrusion section is 50-250°C, and the rotation speed of the extruder is 25-450 rpm). grain.

Embodiment 3

[0054] Example 3 Disposable degradable plastic shopping bag, food bag will contain the particle of the composition of embodiment 1, join in the high-density polyethylene (Qilu Petrochemical 6098) in the ratio of 2.0 (weight percent), and the latter consumption is 98 (weight percent) ).

[0055] After uniform mixing, put the mixture into the hopper of the extrusion film blowing machine (Shenzhen Weitai Machinery Equipment Co., Ltd. SJM-45D, extruder screw diameter 45mm, aspect ratio 25:1), and then extrusion blow molding Form a cylindrical film (thickness of the film can be 0.01-0.5mm). Then, through printing, punching, heat sealing, etc., various specifications of degradable plastic shopping bags, food bags and other packaging bags are made. Its mechanical properties are similar to or improved to ordinary shopping bags and food bags of the same thickness. It meets the technical requirements of disposable plastic shopping bags and food bags. Its hygienic properties also ...

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Abstract

The invention provides a composition for use in degradable plastics, which comprises: 1) a visible light catalytic oxidation degradation and thermally catalytic oxidation degradation component which is metal organic compound of a transition metal and accounts for 1 to 10 percent of the total weight of the composition; 2) an ultraviolet light catalytic degradation component which is a nano transition metal compound which has a particle diameter of between 5 and 100 nanometers and an ultraviolet light catalytic degradation function and accounts for 0.1 to 10 percent of the total weight of the composition; 3) an assisted oxidation degradation component which accounts for 1 to 10 percent of the total weight of the composition; and 4) a plastic basic component which accounts for the balance ofthe total weight of the composition. The invention also relates to the use of the composition in the production of degradable plastic products and the various degradable packaging or dispensable plastics and plastic products produced by using the composition.

Description

technical field [0001] The present invention relates to a composition that can be used for environmentally degradable plastic products and its use in the manufacture of environmentally degradable plastic products, and also relates to various environmentally degradable packaging fields or disposable plastics made from the composition and plastic products. Background technique [0002] As one of the most widely used materials at present, plastics have penetrated into all sectors of the national economy and all areas of people's lives. However, a large amount of waste plastics have caused "white pollution" due to their non-degradability. [0003] At present, the main methods of dealing with these "white garbage", such as landfill, pyrolysis liquefaction, incineration, recycling and reprocessing, etc., will inevitably bring secondary pollution and high treatment costs. Degradable plastic technology is currently one of the most promising methods to eradicate "white pollution". ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K5/098C08K3/22C08K3/30C08K5/092C08K5/13C08L23/06C08J11/10
CPCY02W30/62
Inventor 周经纶王大勇王丽红
Owner 济南中科广源环保科技有限公司
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