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Crosslinking master batch which is controllable in crosslinking degree and is used for regenerated polyethylene, and preparation method thereof

A technology of recycled polyethylene and cross-linked masterbatch, which is applied in the field of polymer materials and its preparation, can solve the problems of restricting the recycling of waste PE plastics, the late start of waste plastics, and the decline in physical properties, and achieve good elasticity, reduced viscosity, The effect of simple preparation method

Inactive Publication Date: 2016-05-25
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since waste HDPE plastics have been used for a period of time, the physical properties have declined compared with new materials, especially the toughness, so it is necessary to modify the recycled plastics to meet the material performance requirements for different uses
[0004] In recent years, as countries around the world have increased investment in environmental protection and encouraged the recycling of waste plastics, the recycling of waste plastics in my country started late and developed slowly. There are few relevant literature reports, which greatly limits the recycling of waste PE plastics. Utilization not only causes environmental pollution, but also loses a lot of resources

Method used

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  • Crosslinking master batch which is controllable in crosslinking degree and is used for regenerated polyethylene, and preparation method thereof
  • Crosslinking master batch which is controllable in crosslinking degree and is used for regenerated polyethylene, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Preparation of mixed modifier: 3.5 parts of vinyltrimethoxysilane, 0.3 parts of dicumyl peroxide (DCP), 0.2 parts of dibenzoyl peroxide (BPO), 0.5 parts of dibutyltin dilaurate, 30 parts of CPE were stirred and mixed to obtain material 1.

[0034] 2) The rest of the raw materials were weighed according to the data corresponding to Example 1 in Table 1 and added to a high-speed mixer for medium-speed stirring and mixing to obtain material 2.

[0035] 3) Add material 1 and material 2 together into a high-speed mixer for medium-speed stirring and mixing to obtain a premix; put the premix into a twin-screw extruder to heat, melt, extrude and plasticize to obtain a semi-finished product. The working conditions are: the temperature is 180-210°C, the screw speed is 300-400r / min; then the semi-finished product is drawn, cooled, dried, and granulated, and the temperature of the cooling water is kept at 45-55°C during the cooling process. A cross-linked masterbatch with a con...

Embodiment 2

[0037] 1) Preparation of mixed modifier: 2 parts of vinyltrimethoxysilane, 1.5 parts of KU-550, 0.3 parts of dicumyl peroxide (DCP), 0.2 parts of dibenzoyl peroxide (BPO), dilauric acid dilaurate 0.5 part of butyltin and 30 parts of CPE were stirred and mixed to obtain material 1.

[0038] 2) The rest of the raw materials were weighed according to the data corresponding to Example 2 in Table 1 and added to a high-speed mixer for medium-speed stirring and mixing to obtain material 2.

[0039] 3) Add material 1 and material 2 together into a high-speed mixer for medium-speed stirring and mixing to obtain a premix; put the premix into a twin-screw extruder to heat, melt, extrude and plasticize to obtain a semi-finished product. The working conditions are: the temperature is 180-210°C, the screw speed is 300-400r / min; then the semi-finished product is drawn, cooled, dried, and granulated, and the temperature of the cooling water is kept at 45-55°C during the cooling process. A cr...

Embodiment 3

[0041] 1) Preparation of mixed modifier: 2 parts of vinyltrimethoxysilane, 1.5 parts of KU-550, 0.5 part of dicumyl peroxide (DCP), 0.5 part of dibutyltin dilaurate, and 30 parts of CPE were stirred and mixed to prepare Material 1.

[0042] 2) The rest of the raw materials were weighed according to the data corresponding to Example 3 in Table 1 and added to a high-speed mixer for medium-speed stirring and mixing to obtain material 2.

[0043] 3) Add material 1 and material 2 together into a high-speed mixer for medium-speed stirring and mixing to obtain a premix; put the premix into a twin-screw extruder to heat, melt, extrude and plasticize to obtain a semi-finished product, The working conditions are: the temperature is 180-210°C, the screw speed is 300-400r / min; then the semi-finished product is drawn, cooled, dried and granulated, and the temperature of the cooling water is kept at 45-55°C during the cooling process. Finally, a cross-linked masterbatch with a controllable...

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Abstract

The invention relates to a high molecular material and a preparation method thereof, and discloses a crosslinking master batch which is controllable in crosslinking degree and is used for regenerated polyethylene and a preparation method thereof. According to the preparation method, polyethylene waste plastic is taken as a main raw material, CPE is taken as a carrier plastic, moderate crosslinking modification is adopted, and the crosslinking master batch which is controllable in crosslinking degree and is used for regenerated polyethylene is prepared. Optimization selection of modifiers is the characteristic of the preparation method. Coupling agents are added for modification, appropriate crosslinking is realized, tight coupling with polyethylene is realized, plastic material performance is improved, optimization on the crosslinking agents is carried out, synergistic interaction of the three crosslinking agents is realized, viscosity is reduced, mechanical properties are improved, and economic benefits and social benefits are excellent.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a cross-linked masterbatch with controllable cross-linking degree for regenerated polyethylene and a preparation method thereof. Background technique [0002] The scientific and technological progress in the field of polymer materials has driven the rapid development of the world's plastics industry. In recent years, my country's plastics industry has developed rapidly, with many varieties and large output. At the same time, our country has also entered the period of plastic scrapping, and a large amount of waste plastics have been produced. After years of use, the performance of plastics after scrapping has dropped significantly, and they cannot be directly reused, resulting in a lot of waste of plastics. A large amount of plastic waste is a great waste and bad behavior that damages the environment, and it also has a negative impact on human health. Since t...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L23/28C08K5/00C08K5/5425C08K5/14C08K5/57
CPCC08L23/06C08K2201/014C08L23/0815C08L2201/08C08L2205/02C08L2207/062C08L2207/066C08L23/286C08K5/00C08K5/5425C08K5/14C08K5/57
Inventor 葛铁军王佳肖尚雄刘浪张瑾
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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