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Polystyrene modified plastic and preparation method thereof

A polystyrene and modification technology, which is applied in the formulation and preparation of polystyrene modified plastics, can solve the problems of high cost, unsuitable for industrialized production, brittle physical properties, low impact strength, etc., and achieves strong impact resistance, Heat resistance, friction resistance, good heat resistance

Inactive Publication Date: 2015-10-07
SUZHOU RONGCHANG COMPOUND MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The polystyrene produced by the existing technology has problems such as brittle physical properties, low impact strength, prone to stress cracking, and poor heat resistance. The existing modified formula cannot solve the above problems well and has high cost and is not suitable for industrialization. production shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 Preparation of polystyrene modified plastic

[0016] The preparation method of polystyrene modified plastic in this embodiment includes the following steps:

[0017] Step 1: Take 70% polystyrene and 12% polycarbonate according to the component formula and add them to the twin screw extruder for melt blending, and the heating temperature is 240° C. to obtain a blend in a molten state.

[0018] Step 2: Add 12% of nano-silica, 1.5% of coupling agent, 1.5% of antioxidant, 1.5% of filler and 1.5% of lubricant to the blend in the molten state, and stir thoroughly 30-120min; to avoid the agglomeration of inorganic nanoparticles and ensure their full dispersion.

[0019] Step 3: Extrude the blend of Step 2 through a double screw extruder, water cooling, pelletizing, and drying to obtain a finished product. The tested tensile strength of the finished product is not less than 23Mpa, and the bending strength is not less than 36.7Mpa.

Embodiment 2

[0020] Example 2 Preparation of polystyrene modified plastic

[0021] The preparation method of polystyrene modified plastic in this embodiment includes the following steps:

[0022] Step 1: According to the component formula, 78% polystyrene and 7% polycarbonate are added to the twin screw extruder for melt blending, and the heating temperature is 280° C. to obtain a blend in a molten state.

[0023] Step 2: Add 10% of nano-kaolin, 1.2% of coupling agent, 1% of antioxidant, 0.9% of filler, 0.9% of lubricant and 1% of color masterbatch to the above-mentioned molten blend , And fully stir for 30-120min; thus avoid the agglomeration of inorganic nanoparticles and ensure their full dispersion.

[0024] Step 3: Extrude the blend of Step 2 through a double screw extruder, water cooling, pelletizing, and drying to obtain a finished product. The tested tensile strength of the finished product is not less than 23Mpa, and the bending strength is not less than 36.7Mpa.

Embodiment 3

[0025] Example 3 Preparation of polystyrene modified plastic

[0026] The preparation method of polystyrene modified plastic in this embodiment includes the following steps:

[0027] Step 1: According to the component formula, 74% polystyrene and 9% polycarbonate are added to the twin-screw extruder for melt blending, and the heating temperature is 260° C. to obtain a blend in a molten state.

[0028] Step 2: Add 11% montmorillonite, 1.5% coupling agent, 1.5% antioxidant, 1.5% filler, 1.2% lubricant and 0.3% color masterbatch to the above-mentioned molten blend , And fully stir for 30-120min; thus avoid the agglomeration of inorganic nanoparticles and ensure their full dispersion.

[0029] Step 3: Extrude the blend of Step 2 through a double screw extruder, water cooling, pelletizing, and drying to obtain a finished product. The tested tensile strength of the finished product is not less than 23Mpa, and the bending strength is not less than 36.7Mpa.

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Abstract

The invention discloses a polystyrene modified plastic which comprises the following components in percentage by weight: 70-78% of polystyrene, 7-12% of polycarbonate, 10-12% of inorganic nanoparticle, 0.7-1.5% of coupling agent, 0.7-1.5% of antioxidant, 0.7-1.5% of filler, 0.7-1.5% of lubricant and 0-1% of color master batch, totaling 100%. The polystyrene modified plastic has reasonable formula design. The produced modified polystyrene has the advantages of high impact resistance, favorable heat resistance and frictional resistance.

Description

Technical field [0001] The invention relates to the field of modified plastics, in particular to a formula of polystyrene modified plastics and a preparation method thereof. Background technique [0002] Modified plastics are intermediate products in the petrochemical industry chain. With the continuous improvement of people's requirements for material performance, my country is becoming the largest potential market and main demand growth driver for modified plastics in the world. [0003] The polystyrene produced by the existing technology has problems such as brittle physical properties, low impact strength, easy stress cracking, poor heat resistance, etc. The existing modified formula cannot solve the above problems well and has high cost and is not suitable for industrialization. Disadvantages of production. Summary of the invention [0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a formula of polystyrene modified plasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L69/00C08K13/08C08K9/04C08K3/36C08K3/34
Inventor 资玉明朱正华黄仁军
Owner SUZHOU RONGCHANG COMPOUND MATERIAL
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