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Degradable poly-methyl ethylene carbonate base composite material and preparation method thereof

A technology of polymethylethylene carbonate and composite materials, which is applied in the field of degradable polymethylethylene carbonate-based composite materials and its preparation, and can solve the problems of no way to prepare films, increase industrial costs, and limit the scope of application , to achieve the effect of good Vicat softening point, low cost and wide application fields

Active Publication Date: 2014-03-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts the solution method to utilize polyvinyl alcohol to modify PPC. The solution method processing not only increases the industrial cost, pollutes the environment, and the solution method has no way to prepare a thicker film due to the use of a large amount of organic solvents, so its application range is limited. limit

Method used

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  • Degradable poly-methyl ethylene carbonate base composite material and preparation method thereof
  • Degradable poly-methyl ethylene carbonate base composite material and preparation method thereof
  • Degradable poly-methyl ethylene carbonate base composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Add 1000mL deionized water and 100g polyvinyl alcohol into the beaker, raise the temperature to 90°C and keep stirring with a mechanical stirrer. After the polyvinyl alcohol is completely dissolved, lower the temperature of the system to room temperature and then add 30mL of the solution with a mass concentration of 36 %-40% formaldehyde solution and 90mL hydrochloric acid solution with a mass concentration of 36%-38% were added to the beaker and stirred evenly. Then heat the temperature to 65°C and keep the temperature constant for 4 hours. After the product is taken out, it is cut into pieces with scissors, then washed with deionized water, and then a certain amount of sodium hydroxide solution is added to adjust the pH value of the material to around 7, and then the The material was dried in a blast oven at 80°C for 24 hours, and placed in a well-sealed desiccator for later use. The acetalization degree of polyvinyl formal is shown in Table 1 by proton nuclear magnet...

Embodiment 2

[0032] Add 1000mL deionized water and 100g polyvinyl alcohol into the beaker, heat it to 90°C with a magnetic stirrer and keep stirring with a mechanical stirrer. %-40% formaldehyde solution and 90mL hydrochloric acid solution with a mass concentration of 36%-38% were added to the beaker and stirred evenly. Then heat the temperature to 65°C, keep the temperature for 4 hours, then take out the product, cut it into pieces with scissors, then wash it with deionized water, add a certain amount of sodium hydroxide solution to adjust the pH value of the material to around 7, and then The material was dried in a blast oven at 80°C for 24 hours, and placed in a well-sealed desiccator for later use. The degree of acetalization of polyvinyl formal was tested by hydrogen nuclear magnetic resonance spectroscopy, and the results are shown in Table 1.

Embodiment 3

[0034]Add 1000mL of deionized water and 100g of polyvinyl alcohol into the beaker, heat it to 90°C with a magnetic stirrer and keep stirring with a mechanical stirrer. After the polyvinyl alcohol is completely dissolved, lower the temperature to room temperature and then add 100mL of polyvinyl alcohol with a mass concentration of 36 %-40% formaldehyde solution and 90mL hydrochloric acid solution with a mass concentration of 36%-38% were added to the beaker and stirred evenly. Then heat the temperature to 60°C and keep the temperature constant for four hours, then take out the product, cut it into pieces with scissors, wash it with deionized water, add a certain amount of sodium hydroxide solution to adjust the pH value of the material to around 7, and then The material was dried in a blast oven at 80°C for 24 hours, and placed in a well-sealed desiccator for later use. The degree of acetalization of polyvinyl formal was tested by hydrogen nuclear magnetic resonance spectroscop...

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Abstract

The invention discloses a degradable poly-methyl ethylene carbonate base composite material and a preparation method thereof. The degradable poly-methyl ethylene carbonate base composite material comprises poly-methyl ethylene carbonate and polyvinyl formal, wherein the percentage by weight of the polyvinyl formal is 10 to 60 percent. The degradable poly-methyl ethylene carbonate base composite material can also comprise a compatibilizer, a lubricant, a foaming agent, a pigment or one or more of other fillers. The composite material is prepared by melting and co-blending the poly-methyl ethylene carbonate and the polyvinyl formal. The composite material has the advantages of high mechanical property, high vicat softening point, low cost and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a degradable polymethylethylene carbonate-based composite material and a preparation method thereof. Background technique [0002] With the rapid growth of global economy and population, the natural environment has brought unprecedented pressure, such as energy crisis, "white pollution", global warming and so on. These problems have become serious challenges to mankind in this century, and they have also attracted great attention from human beings. Therefore, finding fundamental solutions to these problems has become a hot spot that people pay attention to. In recent years, our research institute has synthesized fully degradable polymethylethylene carbonate through the copolymerization of propylene oxide and carbon dioxide. This product can not only effectively use waste carbon dioxide gas to reduce the "greenhouse effect", but also the product can be degraded in a short time to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L29/14C08G64/34C08F16/06C08F8/28
Inventor 孟跃中郭祯肖敏王栓紧韩东梅杜风光甘力强
Owner SUN YAT SEN UNIV
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