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Modifier for regeneration processing of mixed waste plastic plate / sheet material and usage method thereof

A technology for processing modifiers and waste plastics, which is used in the field of regenerated processing modifiers for mixed waste plastic plates/sheets, and can solve the problems of complex components, unsubstantially improved processing methods, poor compatibility, etc. Capacitance, improve use value, improve the effect of strength

Inactive Publication Date: 2014-03-26
PLASTIC UNION NEW MATERIAL TECH HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex composition of mixed waste plastic plates / sheets, poor compatibility during recycling, and no substantial improvement in processing methods, the defects of traditional waste plastic processing methods are still retained.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The mixed waste plastic board / sheet material recycling processing modifier of the present invention, its raw material formula is represented by weight ratio and includes the following components: maleic anhydride 1; chlorinated polyethylene 2; ethylene·vinyl acetate copolymer 3; Styrene·butadiene·styrene block copolymer 4; styrene 5, for later use; put the above-mentioned modifier raw material components together into a high-speed mixer at a temperature of 110°C and mix evenly, then discharge and cool for later use.

[0014] The using method of modifying agent of the present invention operates according to the following steps:

[0015] (1) Classify waste mixed plastic boards / sheets to obtain PE, PP and PS, and PA, PET, PVC and other mixed waste plastic boards / sheets;

[0016] (2) After crushing, cleaning, dehydrating, drying and dehumidifying all kinds of miscellaneous waste plastic plates / sheets obtained from the above classification, various kinds of miscellaneous was...

Embodiment 2

[0020] This embodiment is basically the same as Embodiment 1, the difference is that:

[0021] The components and parts by weight of the mixed waste plastic plate / sheet material regeneration processing modifier of the present invention are: maleic anhydride 1.5; chlorinated polyethylene 2.2; ethylene vinyl acetate copolymer 3.5; styrene butadiene Diene-styrene block copolymer 4.5; Styrene 5.2; Put the above-mentioned modifier raw material components together into a high-speed mixer at a temperature of 120°C for mixing.

[0022] The method of using the modifier of the present invention: (3) The dosage of the prepared modifier is 3% of the total weight after mixing, and the temperature is raised to 108°C at room temperature; (4) Use a plastic granulator Granulation was carried out under the temperature condition of 215° C., and the granulation time was 16 minutes.

Embodiment 3

[0024] This embodiment is basically the same as Embodiment 1, the difference is that:

[0025] The components and parts by weight of the mixed waste plastic plate / sheet material recycling processing modifier of the present invention are: maleic anhydride 3; chlorinated polyethylene 3; ethylene vinyl acetate copolymer 5; styrene butadiene Diene·styrene block copolymer 6; styrene 6.5; put the above-mentioned modifier raw material components into a high-speed mixer at a temperature of 118°C and mix them.

[0026] The method of using the modifier of the present invention: (3) The dosage of the modified modifier is 4% of the total weight after mixing, and the temperature is raised to 107°C at room temperature; (4) Use a plastic granulator Granulate under the temperature condition of 170 DEG C, and the granulation time is 20 minutes.

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PUM

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Abstract

The invention discloses a modifier for regeneration processing of mixed waste plastics plate / sheet materials. The modifier comprises the following components by weight ratio: 1-5 parts of maleic anhydride, 2-4 parts of chlorinated polyethylene, 3-7 parts of an ethylene-vinyl acetate copolymer, 4-8 parts of a styrene-butadiene-styrene block copolymer and 5-8 parts of styrene. A preparation process of the modifier is as below: adding raw materials into a high speed feed mixer for uniform mixing, discharging and cooling for standby. A usage method of the modifier for regeneration processing of mixed waste plastic plate / sheet materials comprises the following steps: (1) classifying waste plastic plate / sheet materials; (2) crushing, washing, dehydrating, drying, dehumidifying and detecting the mixed waste plastic plate / sheet materials; (3) mixing and heating the modifier with the mixed waste plastic raw materials, carrying out a grafting reaction, and cooling for standby; and (4) granulating. The invention has the advantages of simple process, convenient operation, low cost and no pollution, and can be widely used in the field of regeneration processing of waste plastic plates / sheets.

Description

technical field [0001] The invention relates to a recycling processing aid for waste plastics and an application method thereof, in particular to a recycling processing modifier for mixed waste plastic board / sheet materials and a using method thereof. Background technique [0002] As we all know, the traditional method of recycling waste plastics is generally to reheat and plasticize waste plastics to make them enter a viscous flow state and then pelletize them for utilization. Due to the high uneven heating of waste plastics, this method depolymerizes the macromolecular chains, loses some of the original compatibility of waste plastics, and greatly reduces its physical properties, and heating under the condition of moisture will make the plastics Further aging and degradation, therefore, the waste plastic recycled plastic processed by this method is of poor quality. In recent years, although some enterprises and researchers have added modifiers to waste plastics, the mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L53/02C08L23/28C08L23/08C08L23/06C08L23/12C08L77/00C08L67/02C08L27/06C08F291/00C08F291/12C08F291/06C08F291/04C08F222/06
Inventor 邓丽邓军邓忠权陈绪煌
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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