Modified waste high impact polystyrene anti-aging master batch

A polystyrene, high-impact technology, applied in the field of waste high-impact polystyrene recycling, achieves the effects of low loss of mechanical properties, improved aging resistance, and good compatibility

Inactive Publication Date: 2010-07-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no literature report on the anti-aging modification of waste HIPS materials.

Method used

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  • Modified waste high impact polystyrene anti-aging master batch
  • Modified waste high impact polystyrene anti-aging master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 95 parts of waste HIPS, 5 parts of polyolefin elastomer POE, 5 parts of linear low density polyethylene and 0.25 parts of 2-(2-hydroxyl-5-methylphenyl) benzotriazole into a high-speed machine with a rotation speed of 1000rpm Mix in the mixer for 5 minutes, then put it into a twin-screw extruder, and simultaneously dissolve 0.07 parts of dicumyl peroxide and titanate coupling agent that are 1:1 by weight 5 parts of styrene were added from the fiber port of the twin-screw extruder, and the temperatures in each zone were 150°C, 170°C, 190°C, 210°C, 210°C, 200°C, and the screw speed was 900 rpm. It can be obtained by mixing, extruding and granulating. The notched impact strength and tensile strength of the obtained anti-aging masterbatch, as well as the performance changes after aging are shown in Tables 2 and 3.

Embodiment 2

[0024] 90 parts of waste HIPS, 10 parts of styrene-butadiene rubber, 6 parts of linear low-density polyethylene and 0.5 parts of four-(4-hydroxy-3,5-tert-butylphenyl propionate) pentaerythritol ester and three (2,4 - Di-tert-butylphenyl) phosphite compound antioxidant composed of 1: 1.2 by weight was first put into a high-speed mixer with a speed of 1000rpm and mixed for 5 minutes, and then it was put into a twin-screw extruder , and at the same time, 6 parts of styrene that have been dissolved into 0.14 parts of dibenzoyl peroxide and propylene triisocyanate coupling agent in a weight ratio of 1:1 are added from the fiber port of the twin-screw extruder , under the conditions of temperature in each zone of 150°C, 170°C, 190°C, 210°C, 210°C, 200°C, and screw speed of 900 revolutions per minute, it can be obtained by melt blending, extruding and granulating. The notched impact strength and tensile strength of the obtained anti-aging masterbatch, as well as the performance chang...

Embodiment 3

[0026] Put 85 parts of waste HIPS, 15 parts of styrene-butadiene rubber, 7 parts of linear low density and 1 part of UV531 into a high-speed mixer with a rotation speed of 1000rpm and mix for 5 minutes, then put it into a twin-screw extruder, and simultaneously 7 parts of styrene that have been dissolved into 0.28 parts of dicumyl peroxide and titanate coupling agent in a weight ratio of 1:1 are added from the fiber port of the twin-screw extruder, and the temperatures in each zone are respectively 150°C, 170°C, 190°C, 210°C, 210°C, 200°C, and screw speed of 900 rpm under the conditions of melt blending extrusion granulation. The notched impact strength and tensile strength of the obtained anti-aging masterbatch, as well as the performance changes after aging are shown in Tables 2 and 3.

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Abstract

The invention discloses an improved disposed high impact-resistant polystyrene antiageing master batch. The master batch is prepared by the following steps: 75 to 95 parts by weight of disposed high impact-resistant polystyrene, 5 to 25 parts by weight of elastomer, 5 to 10 parts by weight of linearity low density polythene, 0.25 to1.0 part by weight of ultraviolet screening agent or / and chemicalinhibitor are added into a high speed mixer for mixing, and then into a double-screw extruder, and simultaneously 5-10 parts of styrene with 0.07 to 0.70 part of dissolved evocating agent and resin acceptor with the weight ratio being 1:1 are added from the glass fiber hole of the double-screw extruder, and then fusion and mixing are carried out at the temperature of 150 to 210 DEG C. The gap impacting intensity of the master batch is greatly increased, and the mechanics performance expense after aging experiment is lower than disposed HIPS alloy without ultraviolet screening agent or compound chemical inhibitor, and antiageing performance is ever better than that of HIPS new material, thus being used in producing office supplies, electron and electric, household electrical appliances, casing and the like, with apparent economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of recycling waste high-impact polystyrene, and in particular relates to a modified waste high-impact polystyrene anti-aging masterbatch. Background technique [0002] High-impact polystyrene (HIPS) has the advantages of high gloss, high impact strength, good heat resistance and good fluidity, and can be widely used in the preparation of air-conditioning chassis, office supplies, toys, food packaging, CD pieces, radios and TV case. However, HIPS waste is increasing day by day due to HIPS, which not only causes serious pollution to the environment, but also forms a great waste of resources, especially in today's day when oil is increasingly scarce. [0003] However, compared with new HIPS materials, waste HIPS has not only undergone processing such as injection molding, but also has been used for a long time. These processes are accompanied by complex photodegradation and thermo-oxidative aging, which greatl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/00C08L51/06C08K5/3475C08K5/132C08K5/134C08K5/38C08K5/526C08J3/22
Inventor 傅强李博张新兰陈枫张琴王珂
Owner SICHUAN UNIV
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