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A kind of multi-component composite material of environmentally compatible polyester and plant and its preparation method

A composite material and compatibility technology, applied in the direction of coating, can solve the problems of unfavorable health of users, aggravated white pollution, unfavorable resources and energy shortage, etc. Effect

Inactive Publication Date: 2019-01-01
JIUJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There have been some reports in the literature on the manufacture of composite materials using plants as raw materials, but non-degradable polymer materials are often used in the manufacture of composite materials. These materials are often derived from oil and natural gas resources. On the one hand, it is not conducive to solving the problem of resource and energy shortages. In addition, it is discarded and thrown into the environment, which aggravates the white pollution.
Thermosetting polymer materials such as urea-formaldehyde resin are often used in the manufacture of plant composite materials. This type of polymer material is thermoplastic resin raw material or its solution during processing. Release toxic and harmful substances, which is not conducive to the health of users

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Bean stalks, rape stalks, rice stalks, and wheat stalks were pretreated as follows before use: chopped into 9 cm sections, dried to constant weight at 60° C., stirred and sheared for 2 minutes. Weigh 167g of lactic acid aqueous solution with a mass content of 60%, 8.8g of glycolic acid, 0.24g of 1,4-butanediol, 0.05g of stannous lactate, and 0.05g of dibutyltin dilaurate into the reactor, and stir well , replace the air in the reactor with high-purity nitrogen, depressurize the reaction system to 1000Pa, then maintain the pressure of the reaction system and raise the temperature to 90°C for 1 hour, depressurize the reaction system to 500Pa, then maintain the pressure of the reaction system and raise the temperature to 130°C for reaction 3h, the reaction system is depressurized to 100Pa, then maintain the pressure of the reaction system and raise the temperature to 170°C for 3h, the reaction system is depressurized to 5Pa, then maintain the pressure of the reaction system...

Embodiment 2

[0033] Rapeseed stalks, rice stalks, and wheat stalks were pretreated as follows: chopped into 1 cm segments, dried to constant weight at 40 °C, and stirred and sheared for 30 min. Weigh 100g of lactic acid, 25g of glycolic acid, 2.4g of 1,4-butanediol, 0.08g of stannous lactate, and 0.02g of dibutyltin dilaurate into the reactor, stir well, and replace with high-purity argon Air in the reactor, depressurize the reaction system to 5000Pa, then maintain the pressure of the reaction system and raise the temperature to 90°C for 3 hours, depressurize the reaction system to 900Pa, then maintain the pressure of the reaction system and raise the temperature to 130°C for 5h, and depressurize the reaction system to 400Pa, then maintain the pressure of the reaction system and raise the temperature to 170 ° C for 5 hours, the reaction system is depressurized to 80 Pa, then maintain the pressure of the reaction system and maintain the reaction temperature at 170 ° C for 5 hours, and return...

Embodiment 3

[0035] The rice stalks and wheat stalks were pretreated as follows before use: chopped into 5 cm segments, dried to constant weight at 50°C, and stirred and sheared for 30 min. Weigh 111g of lactic acid aqueous solution with a mass content of 90%, 12g of glycolic acid, 1g of 1,4-butanediol, 0.02g of stannous lactate, and 0.08g of dibutyltin dilaurate into the reactor, stir well, Replace the air in the reactor with high-purity nitrogen, reduce the pressure of the reaction system to 3000Pa, then maintain the pressure of the reaction system and raise the temperature to 90°C for 2 hours, reduce the pressure of the reaction system to 700Pa, then maintain the pressure of the reaction system and raise the temperature to 130°C for 4 hours , the reaction system is decompressed to 300Pa, then the pressure of the reaction system is maintained and the temperature is raised to 170°C for 4 hours, the reaction system is depressurized to 40Pa, then the pressure of the reaction system is mainta...

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Abstract

The invention relates to a multi-component composite material of environmentally compatible polyester and plants and a preparation method thereof. The main components of the composite material include environmentally compatible polyester, plants, inorganic functional fillers, and alkyd resins. Synthesis of polyester, mixing of polyester with plant raw materials and inorganic functional fillers, hot pressing, and post-processing steps in a decompression and heating process. The environmentally compatible polyester contained in the prepared composite material has good degradability, and at the same time It has structural similarity and chemical compatibility with plant raw materials, does not require additional compatibilization measures, simplifies the formulation of composite materials, and improves the safety of composite materials. The preparation process adopts a step-by-step decompression strategy, which not only ensures the stability of the synthesis process and reduces the energy consumption of the reaction, but also helps to ensure the stability of the polymer structure and chemical composition.

Description

technical field [0001] The invention relates to a composite material, which belongs to the field of environment-friendly materials and plant composite materials, in particular to a multi-component composite material of environmentally compatible polyester and plants and a preparation method thereof. Background technique [0002] Resource shortage and environmental pollution are two stumbling blocks in the current economic and social development process. The shortage of resources has increased the cost of development, and environmental pollution has damaged air resources, water resources, and soil resources, which in turn has damaged people's health and the achievements of development. In order to alleviate resource crisis and reduce environmental pollution, renewable resources should be fully utilized, and environmentally friendly and resource-saving processes and products should be developed. Plant resources are an important renewable resource. The poem "Wild fires are end...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L67/04C08G63/06C08G63/78C08K3/38C08K3/04C08K3/34C08J7/04
Inventor 吴传保刘利江曾湘晖
Owner JIUJIANG UNIV
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