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Waste high impact polystyrene modified material and preparation method thereof

A technology for polystyrene and modified materials, which is applied in the field of waste high-impact polystyrene modified materials and its preparation, and can solve problems such as environmental hazards, rising waste, and poor mechanical properties of high-impact polystyrene , to achieve the effect of good mechanical properties

Inactive Publication Date: 2015-02-04
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] With the increase in the consumption of high-impact polystyrene materials, the amount of high-impact polystyrene material product waste has also risen sharply, which not only brings great harm to the environment, but also forms a great waste of resources
[0006] For the disposal of high-impact polystyrene material waste, the most ideal way is to recycle it, but due to the waste high-impact polystyrene in high-impact polystyrene waste The mechanical properties are generally poor, making it difficult to reuse them after recycling

Method used

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  • Waste high impact polystyrene modified material and preparation method thereof

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preparation example Construction

[0038] The invention provides a method for preparing a waste high-impact polystyrene modified material, comprising the following steps:

[0039] 100 parts by weight of waste high-impact polystyrene and 0.3-1.5 parts by weight of a bisoxazoline compound are melt-blended to obtain a modified material of waste high-impact polystyrene;

[0040] The notched impact strength of the waste high-impact polystyrene is lower than 4kJ / m 2 .

[0041] In the preparation method provided by the invention, waste high-impact polystyrene and bisoxazoline compounds are firstly melt-blended. Wherein, the notched impact strength of the waste high-impact polystyrene is lower than 4kJ / m 2 .

[0042] In an embodiment provided by the present invention, the notched impact strength of the waste high-impact polystyrene is lower than 3kJ / m 2 ; In another embodiment provided by the present invention, the notched impact strength of the waste high-impact polystyrene is less than or equal to 2.8kJ / m 2 .

...

Embodiment 1

[0057] Grind waste high-impact polystyrene recycled materials into flakes with a length of less than 1cm, a width of less than 5mm, and a thickness of less than 2mm, and then mix 500g of the crushed flakes with 1,3-bis(2-oxazoline ) 2.5 g of benzene was placed in a blast drying oven, and dried at 80° C. for 12 hours. After drying, the dried waste high-impact polystyrene recycled material and 1,3-bis(2-oxazolinyl)benzene are uniformly mixed and fed into a twin-screw extruder. Waste high-impact polystyrene recycled materials and 1,3-bis(2-oxazolinyl)benzene are melt-blended in a twin-screw extruder and then extruded at a temperature of 190°C. The discharged material is cooled and granulated in sequence to obtain waste high-impact polystyrene modified materials.

[0058] In this example, the waste high-impact polystyrene recycled materials used are provided by Zhengzhou Shuangcheng Plastic Tray Preparation Co., Ltd., and the notched impact strength of the waste high-impact polys...

Embodiment 2

[0060] Grind waste high-impact polystyrene recycled materials into flakes with a length of less than 1cm, a width of less than 5mm, and a thickness of less than 2mm, and then mix 500g of the crushed flakes with 1,3-bis(2-oxazoline ) 4.5 g of benzene was placed in a blast drying oven, and dried at 80° C. for 12 hours. After drying, the dried waste high-impact polystyrene recycled material and 1,3-bis(2-oxazolinyl)benzene are uniformly mixed and fed into a twin-screw extruder. Waste high-impact polystyrene recycled materials and bisoxazoline compound 1,3-bis(2-oxazoline)benzene were extruded after melt blending in a twin-screw extruder, and the extrusion temperature was 190°C. The extruded material obtained by extrusion is cooled and granulated in sequence to obtain waste high-impact polystyrene modified material.

[0061] In this embodiment, the waste high-impact polystyrene recycled material used is the same as that in Embodiment 1.

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Abstract

The invention belongs to the field of high polymer materials and in particular relates to a waste high impact polystyrene modified material and a preparation method thereof. The waste high impact polystyrene modified material provided by the invention is prepared by performing melt blending on materials, wherein the materials comprise the following components in parts by weight: 100 parts of waste high impact polystyrene and 0.3-1.5 parts of bi-oxazoline compound; the notch impact strength of the waste high impact polystyrene is lower than 4kJ / m<2>. The waste high impact polystyrene modified material provided by the invention has good mechanical property. The experimental result proves that the notch impact strength of the waste high impact polystyrene modified material provided by the invention is higher than 4kJ / m<2>, the tensile strength is higher than 25MPa, the bending strength is higher than 34MPa, the elongation at break is higher than 50 percent, and the melt mass-flow rate is lower than 8.5g / 10 minutes.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a waste high-impact polystyrene modified material and a preparation method thereof. Background technique [0002] Styrene resin is one of the five general-purpose synthetic resins, and its output is second only to PE, PVC and PP, ranking fourth. [0003] In the early stage of styrene development, only general-purpose polystyrene was produced, which was hard and brittle. The mechanical strength is not high, the heat resistance is poor, and it is flammable. For this reason, people have done a lot of improvement work, forming a huge styrene resin system represented by high-impact polystyrene, expandable polystyrene, acrylonitrile-styrene copolymer, etc. [0004] High-impact polystyrene is a composite material in which rubber particles are dispersed in a transparent polystyrene matrix. It has the advantages of stable size, good electrical insulation, easy processing, low cost, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08K5/353
Inventor 李迎春王盼咸旭胜杨业昕刘鑫李洁王文生王超
Owner ZHONGBEI UNIV
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