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Special master batch for recovering polyethylene plastic

A technology of polyethylene plastic and high-density polyethylene, which is used in the formulation field of recycled plastic masterbatch

Inactive Publication Date: 2013-04-24
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, general plastic recycling companies do not have the technology and ability to strengthen and toughen recycled plastics. If there is a special masterbatch that can strengthen and toughen recycled plastics, plastic recycling companies can use a simple mixer to mix the masterbatch. The purpose of modifying recycled plastics can be achieved by mixing materials with recycled plastics

Method used

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  • Special master batch for recovering polyethylene plastic
  • Special master batch for recovering polyethylene plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 75 parts of calcium sulfate whiskers into the mixer, heat to 70-80°C under stirring, add 1 part of titanate coupling agent, 0.5 parts of stearic acid, and 1.7 parts of liquid paraffin in sequence and mix and stir for 15 minutes; Add 25 parts of high-density polyethylene to 0.7 parts of maleic anhydride, 0.04 parts of cumene peroxide, 0.08 parts of triphenyl phosphite and 0.07 parts of 2,6-di-tert-butylphenol in sequence under stirring, and heat to 80- Mix at high speed for 20 minutes at 90°C. Mix the above two components in a twin-screw extruder, control the barrel temperature at 190-200°C, the screw speed at 300-400 rpm, and the melt pressure at 4.5MPa, mix and extrude and granulate to obtain a special mother for recycled plastics material. The masterbatch is mixed with recycled polyethylene resin that has been sorted, cleaned, dried and pelletized in a weight ratio of 15:85, pelletized on an extruder, and its mechanical properties and stability are measured accor...

Embodiment 2

[0026] The preparation of recycled plastic masterbatch is the same as in Example 1, and the mixing ratio with recycled polyethylene is changed to 12:88.

Embodiment 3

[0028] The preparation process of recycled plastic masterbatch is the same as in Example 1, and the mixing ratio with recycled polyethylene is changed to 18:82.

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Abstract

The invention provides special master batch for recovering polyethylene plastic, including strengthening, toughening and stabilization of high-density polyethylene (HDPE) and low-density polyethylene (LDPE). The master batch is prepared by coupling treatment, stabilizing treatment and other techniques by using calcium sulfate whisker as a main modification material and HDPE as a carrier resin. The master batch and recovered polyethylene plastic can be mixed and granulated according to the application method of the traditional plastic master batch, thereby implementing strengthening, toughening and stabilization modification of the recovered polyethylene plastic.

Description

technical field [0001] The invention relates to a formula of recycled plastic masterbatch, which can be used for strengthening, toughening and stabilizing treatment of recycled polyethylene plastic, and belongs to the technical field of composite materials. Background technique [0002] Polyethylene plastic is the plastic variety with the largest output. Its recycling is of great significance. Generally, it can be mixed with new materials after sorting, recycling, crushing, and granulation. However, its performance will generally decrease after recycling. Problems such as stability and easy decomposition greatly limit its application range and application value, and also affect the recycling rate of plastics. [0003] In order to solve these problems, it needs to be strengthened, toughened, modified and stabilized, which can greatly improve its mechanical properties and reduce its possibility of oxidative degradation, so that its performance can be comparable to that of new...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/04C08K7/04C08K5/09C08K5/1539C08K5/14C08K5/526C08K5/13C08J3/22
Inventor 姚金水乔从德张献李梅
Owner QILU UNIV OF TECH