Flame-retardant polystyrene (PS) composite material

A composite material, palygorskite technology, applied in the field of polymer materials, can solve the problems of fast burning speed, which have not been seen in reports, and achieve the effect of increasing specific surface area and improving physical properties

Inactive Publication Date: 2018-04-17
黄忠波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polystyrene (PS), as a common engineering plastic, is widely used in various electrical appliances, automobiles, medical and other materials, but because it is flammable and burns fast, the problem of flame retardancy has always been a limitation of PS. A factor for the application of composite materials to other fields
[0003] Organically modify palygorskite to obtain organically modified palygorskite; then use flame retardant and modified palygorskite to improve the flame retardancy and physical properties of PS, and finally obtain PS with good mechanical properties and excellent flame retardancy Composite materials, which have not been reported so far

Method used

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  • Flame-retardant polystyrene (PS) composite material
  • Flame-retardant polystyrene (PS) composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Weigh 50 parts of PS, 5 parts of PA66, 20 parts of modified palygorskite, 20 parts of APP, 6 parts of melamine, 0.1 part of Irganox168, 0.1 part of calcium stearate and mix them evenly to obtain a mixture;

[0022] (2) Extruding and granulating the mixture obtained in the step (1) to obtain PS composite material P1.

[0023] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 160°C, the temperature of the second zone is 180°C, the temperature of the third zone is 180°C, the temperature of the fourth zone is 180°C, the temperature of the fifth zone is 180°C, and the temperature of the sixth zone is 180°C. The head temperature is 180°C; the screw speed is 180r / min.

Embodiment 2

[0025] (1) Weigh 80 parts of PS, 10 parts of PA66, 30 parts of modified palygorskite, 30 parts of APP, 12 parts of melamine, 0.1 part of Irganox168, 0.2 part of Irganox1010, 0.2 part of Irganox1330, 0.1 part of calcium stearate, 0.2 part Zinc stearate is mixed and stirred evenly to obtain a mixture;

[0026] (2) Extruding and granulating the mixture obtained in step (1) to obtain PS composite material P2.

[0027] Among them, the temperature and screw speed of each zone of the twin-screw extruder are: the temperature of the first zone is 180°C, the temperature of the second zone is 220°C, the temperature of the third zone is 220°C, the temperature of the fourth zone is 220°C, the temperature of the fifth zone is 220°C, the temperature of the sixth zone is 220°C, The head temperature is 220°C; the screw speed is 260r / min.

Embodiment 3

[0029] (1) Weigh 65 parts of PS, 8 parts of PA66, 25 parts of modified palygorskite, 25 parts of APP, 9 parts of melamine, 0.1 part of Irganox168, 0.2 part of Irganox1010, 0.1 part of potassium stearate, 0.1 part of zinc stearate Mix and stir evenly to obtain a mixture;

[0030] (2) Extruding and granulating the mixture obtained in step (1) to obtain PS composite material P3.

[0031] Among them, the temperature and screw speed of each zone of the twin-screw extruder are respectively: the temperature of the first zone is 170°C, the temperature of the second zone is 200°C, the temperature of the third zone is 200°C, the temperature of the fourth zone is 200°C, the temperature of the fifth zone is 200°C, and the temperature of the sixth zone is 200°C. The head temperature is 200°C; the screw speed is 220r / min.

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Abstract

The invention relates to a flame-retardant PS composite material and a preparation method thereof, which is made of the following components by weight: 50-80 parts of PS; 5-10 parts of PA66; 20 parts-10 parts of modified palygorskite. 30 parts; flame retardant is 20-30 parts; synergistic flame retardant is 6-12 parts; antioxidant is 0.1-0.5 parts; lubricant is 0.1-0.3 parts. The specific surface area of ​​natural palygorskite is small. This technical scheme modifies it by HCl, H+ replaces Mg+, Si-O-Mg-O-Si becomes two Si-O-H bonds, and the internal channel is connected. Increased specific surface area can make palygorskite better dispersed in PS matrix; at the same time, octadecyltrimethylammonium bromide can react with hydroxyl groups on palygorskite to graft organic matter onto the surface of palygorskite , improve the compatibility between palygorskite and PS, which also indirectly improves the physical properties of PS composites.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a flame-retardant PS composite material and a preparation method thereof. Background technique [0002] Polystyrene (PS), as a common engineering plastic, is widely used in various electrical appliances, automobiles, medical and other materials, but because it is flammable and burns fast, the problem of flame retardancy has always been a limitation of PS. A factor in the application of composite materials to other fields. [0003] Organically modify palygorskite to obtain organically modified palygorskite; then use flame retardant and modified palygorskite to improve the flame retardancy and physical properties of PS, and finally obtain PS with good mechanical properties and excellent flame retardancy Composite materials, which have not been reported so far. Contents of the invention [0004] The object of the present invention is to provide a flame-retardant PS com...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L77/06C08K13/06C08K9/02C08K9/04C08K3/32C08K5/3492C08K5/098
CPCC08L25/06C08K2003/323C08K2201/014C08L2201/02C08L77/06C08K13/06C08K9/02C08K9/04C08K3/32C08K5/34922C08K5/098
Inventor 黄忠波
Owner 黄忠波
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