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Production method of waste plastic regenerated particles

A technology of waste plastic and production method, applied in the field of waste plastic recycling, can solve the problems of brittleness, poor toughness, poor wear resistance, etc.

Inactive Publication Date: 2022-02-25
界首市金吴再生资源利用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a production method of waste plastic regenerated particles to solve the shortcomings of existing waste plastic regenerated materials such as brittleness, poor toughness and poor wear resistance

Method used

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  • Production method of waste plastic regenerated particles
  • Production method of waste plastic regenerated particles
  • Production method of waste plastic regenerated particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of diamine monomer:

[0038] B1, 0.01mmol PdCl 2and 2 mL of water / acetone mixed solvent (the volume ratio of water and acetone is 1:4) was stirred in a water bath at 65 ° C for 30 min, cooled to room temperature, and then 1 mmol 2-chloro-trifluorotoluene and 1.2 mmol 4-aminophenylboronic acid were added and 1.5 mmol K 3 PO 4 ·3H 2 O, after mixing evenly, seal the reaction, heat to reflux, react for 12h, stop the reaction, cool to room temperature, add water, then extract with 5mL diethyl ether multiple times, combine the extracts, and then separate through the column to obtain the biphenyl derivative;

[0039] B2. Dissolve 0.1mol of 4-hydroxymethylbenzaldehyde in isopropanol, then add 0.1mol of acrylic acid and 0.36g of p-toluenesulfonic acid, heat to 56°C, stir for 4 hours, stop the reaction, and rotate under reduced pressure to obtain Intermediate product: Dissolve 0.21mol of biphenyl derivatives and 0.1mol of intermediate in glacial acetic acid, add d...

Embodiment 2

[0041] Preparation of diamine monomer:

[0042] B1, 0.01mmol PdCl 2 and 5 mL of water / acetone mixed solvent (the volume ratio of water and acetone is 1:4), stirred in a water bath at 65°C for 30 min, cooled to room temperature, and then added 1 mmol 2-chloro-trifluorotoluene and 1.5 mmol 4-aminophenylboronic acid and 2 mmol K 3 PO 4 ·3H 2 O, after mixing evenly, seal the reaction, heat to reflux, react for 12h, stop the reaction, cool to room temperature, add water, then extract with 5mL diethyl ether multiple times, combine the extracts, and then separate through the column to obtain the biphenyl derivative;

[0043] B2. Dissolve 0.1mol 4-hydroxymethylbenzaldehyde in isopropanol, then add 0.1mol acrylic acid and 0.72g p-toluenesulfonic acid, heat to 56°C, stir for 4 hours, stop the reaction, and spin evaporate under reduced pressure to obtain Intermediate product: Dissolve 0.23mol of biphenyl derivatives and 0.1mol of intermediate in glacial acetic acid, add dropwise a mi...

Embodiment 3

[0045] Preparation of dendritic elastomers:

[0046] A1. Add 0.1mol pentaerythritol, 0.41mol 1,4-cyclohexanedioic acid and 80mL isopropanol into a three-necked flask with a reflux condenser and a stirring magnet, stir evenly, add 0.4g p-toluenesulfonic acid, and reflux reaction After 4 hours, cool down to 50°C and dissolve with 80 mL of acetone, then precipitate with 50 mL of n-hexane, and dry in vacuum to constant weight to obtain carboxyl-terminated polyester;

[0047] A2. Mix 0.1mol of carboxy-terminated polyester, 0.4mol of diisocyanate and 80mL of anhydrous dichloromethane, heat to 82°C, react for 3 hours, add 0.4mol of the diamine monomer prepared in Example 1, and continue the reaction for 4 hours , rotary evaporation under reduced pressure, and vacuum drying at 50°C to constant weight to obtain a dendritic elastomer.

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Abstract

The invention relates to a production method of waste plastic regenerated particles, and belongs to the technical field of waste plastic regeneration. The production method comprises the following steps of: 1, preparing of waste plastic particles: obtaining waste plastic particles; and 2, mixing, extruding and granulating: putting the waste plastic particles, resin particles and asolubilizer into a stirrer, heating until the materials are completely molten in a stirring state, keeping the temperature for 20-35 minutes, then adding a dendritic elastomer, a light stabilizer and an antioxidant, stirring for 15-30 minutes at 110-120 DEG C, cooling to 40-60 DEG C, transferring the mixture into an extruder, and extruding and granulating to obtain waste plastic regenerated particles. The dendritic elastomer is introduced into the waste plastic particle system, so that the elasticity of the regenerated plastic is improved, the brittle fracture of the regenerated plastic is reduced, and the wear resistance of the regenerated plastic is improved.

Description

technical field [0001] The invention belongs to the technical field of recycling waste plastics, and in particular relates to a method for producing recycled particles of waste plastics. Background technique [0002] Plastic is a polymer material, it is difficult to decompose in nature after being discarded, and it will produce toxic gas during incineration, which will endanger human health. However, waste plastics are recyclable garbage. Remaking them into plastic granules as raw materials for plastics can be recycled and reduce the pollution of waste plastics to the environment. However, waste plastic recycled materials have the disadvantages of brittleness, poor toughness and poor wear resistance. [0003] The usual solution is to improve the above-mentioned defects of waste plastic recycled materials by adding various auxiliary agents. For example, Chinese patent CN111269527A discloses a waste plastic regenerated material, regenerated product and its regenerated method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L27/06C08L23/12C08L75/14C08L51/06C08L55/02C08K5/134C08K5/526C07C213/06C07C219/32C07C213/02C07C215/68C07C209/68C07C211/52C08G18/42C08G18/67
CPCC08L23/06C08L27/06C08L23/12C07C213/06C07C213/02C07C209/68C08G18/423C08G18/6775C08L2207/20C07C211/52C07C215/68C07C219/32C08L75/14C08L51/06C08K5/1345C08K5/526C08L55/02
Inventor 胡强方卫钱国滨汤明伟董罡星姜良军
Owner 界首市金吴再生资源利用有限公司
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