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Nanometer aluminum oxide modified polystyrene

A technology of aluminum oxide and polystyrene, applied in the field of polystyrene, can solve the problems of stress cracking, brittleness, poor heat resistance, etc., and achieve the effects of improved reinforcement, improved heat resistance, and convenient industrial production

Inactive Publication Date: 2016-03-23
QINGDAO YISHIBAO PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies of existing ordinary polystyrene such as brittleness, low impact strength, easy stress cracking, poor heat resistance and resistance to boiling water, the present invention provides a nano-alumina modified polystyrene and how to make it:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Take each raw material respectively by weight ratio as follows:

[0014] Polystyrene raw material: 80; Nano Al 2 o 3 : 15; titanate coupling agent: 4.0; TAS-2A dispersion lubricant: 0.5; white oil: appropriate amount;

[0015] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 160-190°C, the third zone is 210-220°C, the fourth zone is 210-215°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0016] Characteristic parameter

[0017] The above test results show that the modified polystyrene not only improves the heat resistance, but also greatly improves its toughening and strengthening effects.

Embodiment 2

[0019] (1) Take each raw material respectively by weight ratio as follows:

[0020] Polystyrene raw material: 75nm Al 2 o 3 : 8 titanate coupling agent: 2TAS-2A dispersion lubricant: 0.2 white oil: appropriate amount.

[0021] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 160-190°C, the third zone is 210-220°C, the fourth zone is 210-215°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0022] Characteristic parameter

[0023] 4 Tensile strength MPa

[0024] The above test results show that the modified polystyrene not only improves the heat resistance, but also greatly improves its toughening and strengthening effects.

Embodiment 3

[0026] (1) Take each raw material respectively by weight ratio as follows:

[0027] Polystyrene raw material: 88; Nano Al 2 o 3 : 8; titanate coupling agent: 2; TAS-2A dispersion lubricant: 0.5; white oil: appropriate amount;

[0028] (2) First dry mix the above-mentioned various raw materials in a high-speed mixer for 3-5 minutes, and then put them in a twin-screw extruder to melt and extrude, cool, pelletize, and pack the finished product; wherein, the twin-screw extruder The temperature of the first zone is 90-100°C, the second zone is 160-190°C, the third zone is 210-220°C, the fourth zone is 210-215°C; the fifth zone is 190-200°C, and the residence time is 1-2 minutes , the pressure is 10-15Mpa.

[0029] Characteristic parameter

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PUM

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Abstract

The present invention provides nanometer aluminum oxide modified polystyrene, which comprises, by weight, 75-88 parts of a polystyrene raw material, 8-20 parts of nanometer Al2O3, 2-6 parts of a titanate coupling agent, 0.2-0.8 part of a TAS-2A dispersion lubricant, and a proper amount of white oil, wherein the modified polystyrene has characteristics of improved heat resistance, substantially-improved toughening, and substantially-improved reinforcement. Another purpose of the present invention is to provide a preparation method, which comprises: carrying out dry mixing on various raw materials for 3-5 min in a high speed mixer, placing in a twin-screw extruder, carrying out melt extrusion, cooling, pelletizing, and packaging to obtain the finished product, wherein the first zone temperature of the twin-screw extruder is 90-100 DEG C, the second zone temperature of the twin-screw extruder is 160-190 DEG C, the third zone temperature of the twin-screw extruder is 210-220 DEG C, the fourth zone temperature of the twin-screw extruder is 210-215 DEG C, the fifth zone temperature of the twin-screw extruder is 190-200 DEG C, the residence time is 1-2 min, and the pressure is 10-15 Mpa.

Description

technical field [0001] The present invention relates to a kind of polystyrene, especially a kind of modified polystyrene. Background technique [0002] Polystyrene (PS) is one of the five general-purpose plastics. It has good mechanical properties, electrical insulation properties and processing properties, and has good dimensional stability and easy coloring. It is widely used in various industries such as electrical decoration, construction, transportation, and military industry. among. After adding the inorganic calcium carbonate, the material production process is simple, the cost is reduced, and it is suitable for production. Polystyrene (PS) includes ordinary polystyrene, expanded polystyrene (EPS), high impact polystyrene (HIPS) and syndiotactic polystyrene (SPS). Ordinary polystyrene resin is non-toxic, odorless, colorless transparent particles, glass-like brittle material, its products have extremely high transparency, light transmittance can reach more than 90%, ...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08K13/02C08K3/22C08K5/10B29C47/92B29C48/92
Inventor 栾蓉王世字
Owner QINGDAO YISHIBAO PLASTIC