Preparing method of PS (polystyrene) composite

A technology of polystyrene and composite materials, applied in the field of preparation of polystyrene composite materials, can solve the problems of obvious low temperature brittleness, poor impact resistance, stress cracking, etc., to enhance impact resistance and toughness, avoid stress cracking, improve rigid effect

Inactive Publication Date: 2015-09-23
SUZHOU YUNSHU NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the rigidity of the molecular chain of PS resin, its products are prone to stress cracking, poor impact resistance, poor weather resistance, and obvious low temperature brittleness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: a kind of preparation method of polystyrene composite material, comprises the following steps:

[0017] (1) Prepare the following ingredients, by mass percentage: polystyrene (PS) 65%, modified resin filler 34%, antioxidant 0.3%, lubricant 0.3%, additive 0.4%;

[0018] (2) Air-dry polystyrene (PS) and modified resin filler at 75°C for 7 hours;

[0019] (3) Cool the dry polystyrene (PS) obtained in step 2 and the modified resin filler to room temperature and place them in a high mixer to mix them evenly with antioxidants, lubricants and additives to obtain a premix;

[0020] (4) Put the premixed material obtained in step 3 in a twin-screw extruder to melt, extrude, and granulate to obtain the product. The process conditions for melt extrusion and granulation: the temperature in the first zone is 170°C, the temperature in the second zone is 200°C, and the temperature in the third zone 215°C, the temperature of the fourth zone is 220°C, the temperature of th...

Embodiment 2

[0022] Embodiment 2: a kind of preparation method of polystyrene composite material, comprises the following steps:

[0023] (1) Prepare the following ingredients, by mass percentage: polystyrene (PS) 89%, modified resin filler 10%, antioxidant 0.3%, lubricant 0.3%, additive 0.4%;

[0024] (2) Air-dry polystyrene (PS) and modified resin filler at 85°C for 4 hours;

[0025] (3) Cool the dry polystyrene (PS) obtained in step 2 and the modified resin filler to room temperature and place them in a high mixer to mix them evenly with antioxidants, lubricants and additives to obtain a premix;

[0026] (4) Put the premixed material obtained in step 3 in a twin-screw extruder to melt and extrude to obtain the product. The process conditions of melt extrusion and granulation: the temperature of the first zone is 200°C, the temperature of the second zone is 215°C, and the temperature of the third zone 225°C, the temperature of the fourth zone is 230°C, the temperature of the fifth zone ...

Embodiment 3

[0028] Embodiment 3: a kind of preparation method of polystyrene composite material, comprises the following steps:

[0029] (1) Prepare the following ingredients, by mass percentage: polystyrene (PS) 78%, modified resin filler 20%, antioxidant 0.4%, lubricant 0.4%, additive 1.2%;

[0030] (2) Air-dry polystyrene (PS) and modified resin filler at 80°C for 5 hours;

[0031] (3) Cool the dry polystyrene (PS) obtained in step 2 and the modified resin filler to room temperature and place them in a high mixer to mix them evenly with antioxidants, lubricants and additives to obtain a premix;

[0032] (4) Put the premixed material obtained in step 3 in a twin-screw extruder to melt and extrude to obtain the product. The process conditions of melt extrusion and granulation: the temperature of the first zone is 185°C, the temperature of the second zone is 210°C, and the temperature of the third zone 220°C, the temperature of the fourth zone is 225°C, the temperature of the fifth zone ...

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PUM

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Abstract

The invention discloses a preparing method of PS (polystyrene) composite. The PS composite comprises, by weight, 65% to 89% of PS, 10% to 34% of modified resin filler, 0.3% to 0.4% of antioxidant, 0.3% to 0.4% of lubricant, and 0.4% to 1.2% of aid. According to the preparing method, styrene butadiene transparent impact resin is used as modified resin filler for PS, rigidity of PS resin can be effectively improved, impact resistance and toughness of the PS resin can be enhanced, and products of the PS composite are protected from stress cracking during using; by the use with other aids, the thermal stability, weatherability and cold brittleness of the PS resin are effectively improved, and thus, the PS resin excellent in comprehensive performance is prepared.

Description

technical field [0001] The invention relates to the technical field of preparation of composite materials, in particular to a preparation method of polystyrene composite materials. Background technique [0002] Polystyrene (PS) is a colorless and transparent thermoplastic that is easy to process and has the advantages of low cost, rigidity, insulation, and good printability. It can be widely used in the light industry market, daily decoration, lighting instructions and packaging, etc. It is also a good insulating material and heat insulation material in the electrical aspect, and can be used to make various lampshades, instrument shells, optical and chemical instrument parts, transparent Film, capacitor dielectric layer, etc. [0003] The moisture absorption rate of polystyrene (PS) is extremely low, and the saturated water absorption rate is 0.03%-0.05%, which is only one tenth of that of polymethyl methacrylate (PMMA). It has excellent moisture-proof and anti-permeat...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L101/00C08K5/20B29C47/92B29B9/06B29C48/92
Inventor 戴晓宸
Owner SUZHOU YUNSHU NEW MATERIAL TECH
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