A degradable environmental protection garbage bag and its production method

A garbage bag and environmental protection technology, applied in the field of degradable environmentally friendly garbage bags and their production, can solve the problems of non-degradable debris, poor mechanical and mechanical properties, soil environmental pollution, etc. The effect of excellent degradation performance and high economic value

Active Publication Date: 2022-01-25
苏州市新广益电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These fragments have no degradability and are difficult to recycle. They still pollute the soil environment and cannot completely solve the "white pollution" problem.
In addition, the degradable environmentally friendly plastic bags in the prior art also have the defects of poor mechanical properties and low degradation efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A degradable environmental protection garbage bag is characterized in that it is made of the following raw materials in parts by weight: 40 parts of poly-terminated carboxyl polylactic acid hydrogenated benzoin ester, 35 parts of polyester urea resin based on polyurethane, 1 part of calcium carbonate, silane coupling 0.2 parts of agent KH5500, 0.5 parts of stearic acid, 0.3 parts of calcium stearate, and 3 parts of hydroxyl-terminated hyperbranched polyester.

[0026] The preparation method of the polycarboxy-terminated polylactic acid hydrogenated benzoin comprises the following steps: adding carboxyl-terminated polylactic acid, hydrogenated benzoin, and tetrabutyl titanate into N,N-dimethylformamide, stirring at 105°C After 60 minutes, the reaction solution was obtained, and then the reaction solution was transferred to the autoclave, and the air in the autoclave was replaced with nitrogen, then the reaction was stirred and reacted at 130°C under normal pressure for 3 ...

Embodiment 2

[0030] A degradable environmental protection garbage bag is characterized in that it is made of the following raw materials in parts by weight: 43 parts of poly-terminated carboxyl polylactic acid hydrogenated benzoin ester, 37 parts of polyester urea resin based on polyurethane, 1.5 parts of talcum powder, silane coupling 0.3 parts of agent KH5600, 0.6 parts of cinnamic acid, 0.5 parts of magnesium stearate, and 3.5 parts of hydroxyl-terminated hyperbranched polyester.

[0031]The preparation method of polycarboxy-terminated polylactic acid hydrogenated benzoin comprises the following steps: adding carboxyl-terminated polylactic acid, hydrogenated benzoin, and p-toluenesulfonic acid to N,N-dimethylacetamide, stirring at 110°C for 70 Minutes to obtain a reaction solution, then transfer the reaction solution to a high-pressure reactor, replace the air in the reactor with helium, then stir and react at 135°C under normal pressure for 3.5 hours, then reduce the pressure to 30Pa, a...

Embodiment 3

[0035] A degradable environmental protection garbage bag is characterized in that it is made of the following raw materials in parts by weight: 45 parts of polycarboxy-terminated polylactic acid hydrogenated benzoin ester, 40 parts of polyester urea resin based on polyurethane, 2 parts of barium sulfate, silane coupling 0.35 parts of agent KH5700, 1 part of arachidic acid, 0.7 parts of calcium stearate, and 4 parts of hydroxyl-terminated hyperbranched polyester.

[0036] The preparation method of polycarboxy-terminated polylactic acid hydrogenated benzoin comprises the following steps: adding carboxyl-terminated polylactic acid, hydrogenated benzoin, and antimony oxide into N-methylpyrrolidone, stirring at 115°C for 80 minutes to obtain a reaction solution, Then transfer the reaction solution to a high-pressure reaction kettle, replace the air in the kettle with neon gas, then stir and react at 140°C under normal pressure for 4 hours, then reduce the pressure to 35Pa, heat up t...

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PUM

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Abstract

The invention discloses a degradable environmental protection garbage bag, which is characterized in that it is made of the following raw materials in parts by weight: 40-50 parts of polycarboxy-terminated polylactic acid hydrogenated benzoin ester, 35-45 parts of polyurethane-based polyester urea resin, 1-3 parts of filler, 0.2-0.5 parts of coupling agent, 0.5-1.5 parts of compatibilizer, 0.3-1 part of heat stabilizer, 3-5 parts of hydroxyl-terminated hyperbranched polyester. The invention also provides a manufacturing method of the degradable environmental protection garbage bag. The degradable environmental protection garbage bag disclosed by the invention has good mechanical properties, good performance stability, strong durability, good degradable performance after being discarded, high degradation efficiency, and excellent toughness and waterproof performance.

Description

technical field [0001] The invention relates to the technical field of garbage bags, in particular to a degradable environmental protection garbage bag and a manufacturing method thereof. Background technique [0002] Garbage bag is an important plastic product in people's daily life. It has a very wide range of uses in the fields of household garbage collection, transportation, and sanitation cleaning. It brings great convenience to thousands of households and provides an important contribution to environmental protection. Safeguards and even facilitates garbage sorting. However, the use of a large number of garbage bags has further aggravated the problem of white pollution and caused serious harm to the natural environment. These garbage bags are mainly made of plastic. The plastic structure is stable. Most of them are made of non-degradable materials. They are not easy to be degraded by natural microorganisms when buried in the ground. They will not degrade for a long ti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L75/02C08L67/00C08K13/02C08K3/26C08K5/09C08K5/098C08K5/092C08K3/34C08K3/30
CPCC08L67/04C08L2205/03C08L2201/06C08K2003/3045C08K2003/265C08L75/02C08L67/00C08K13/02C08K3/26C08K5/09C08K5/098C08K3/34C08K3/30C08K5/092
Inventor 夏超华
Owner 苏州市新广益电子股份有限公司
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