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Flame retardant PS composite and method of processing flame retardant PS composite

A technology of composite materials and mixtures, which is applied in the field of flame-retardant PS composite materials and its preparation, can solve the problems of high burning speed and other problems that have not been reported before, and achieve the effect of improving physical properties and increasing specific surface area

Active Publication Date: 2017-03-08
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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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 PS composite and method of processing flame retardant PS composite
  • Flame retardant PS composite and method of processing flame retardant PS composite
  • Flame retardant PS composite and method of processing flame retardant PS composite

Examples

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preparation example Construction

[0038] The preparation method of any one of the above flame-retardant PS composite materials, comprising the following steps:

[0039] (1) Weigh 50-80 parts of PS, 20-30 parts of modified palygorskite, 20-30 parts of APP, 6-12 parts of melamine, 0.1-0.5 parts of antioxidant, 0.1-0.3 parts of lubricants are mixed and stirred evenly to obtain a mixture;

[0040] (2) Extruding and granulating the mixture obtained in step (1) to obtain a PS composite material.

[0041] Preferably, the step (2) specifically includes: putting the mixture obtained in the step (1) into the hopper of a twin-screw extruder to extrude and granulate to obtain a PS composite material, wherein the twin-screw extruder The output machine includes six temperature zones arranged in sequence, the temperature of the first zone is 160-180°C, the temperature of the second zone is 180-220°C, the temperature of the third zone is 180-220°C, the temperature of the fourth zone is 180-220°C, and the temperature of the f...

preparation example 1

[0048] Modified palygorskite, its preparation method is as follows:

[0049] (1) Weigh a certain amount of hydrochloric acid and palygorskite into a three-necked flask, heat and react in an oil bath at 80-100°C for 6-10h, filter the resulting precipitate with suction, and dry the obtained product A; hydrochloric acid and palygorskite The ratio of the amount of stone to substance is 6:3.

[0050] (2) Weigh a certain amount of A and octadecyltrimethylammonium bromide into the mouth of a three-neck flask, heat and react in an oil bath at 60-80°C for 8-14h, centrifugally filter the resulting product, and dry Acquired modified palygorskite; wherein the ratio of A to octadecyltrimethylammonium bromide is 20:8.

preparation example 2

[0052] Modified palygorskite, its preparation method is as follows:

[0053] (1) Weigh a certain amount of hydrochloric acid and palygorskite into a three-necked flask, heat and react in an oil bath at 80-100°C for 6-10h, filter the resulting precipitate with suction, and dry the obtained product A; hydrochloric acid and palygorskite The ratio of the amount of stone to substance is 6:7.

[0054] (2) Weigh a certain amount of A and octadecyltrimethylammonium bromide into the mouth of a three-neck flask, heat and react in an oil bath at 60-80°C for 8-14h, centrifugally filter the resulting product, and dry Acquired modified palygorskite; wherein the ratio of A to octadecyltrimethylammonium bromide is 20:15.

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Abstract

The invention discloses a flame retardant PS composite and a method of processing the flame retardant PS composite. The flame retardant PS composite is made by following weight compositions: PS accounts for 50 to 80 portions; modified palygorskite accounts for 20 to 30 portions; fire retardant accounts for 20 to 30 portions; synegistic flame retardant accounts for 6 to 12 portions; antioxygen accounts for 0.1 to 0.5 portions and lubricant accounts for 0.1 to 0.3 portions. Natural palygorskite is smaller than superficial area. The method of processing the flame retardant PS composite improves the natural palygorskite by HCL, by replacing Mg+ with H+ and by changing SI-O-Mg-O-Si into twoSI-O-Mg-O-Si bonds. Thus, inner passages are connected with each other and the superficial area is enlarged. After being improved, palygorskite can scatter much better in matrix of the PS. At the same time, octadecyl trimethyl ammonium bromide can react with hydroxyl on the palygoskite. Organics can be grafted to surface of the palygoskite. Compatible problem between the palygoskiteand the PS can be improved, which also indirectly improves physical properties of the PS composite.

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): C08L25/06C08K13/06C08K9/04C08K3/34C08K3/32C08K5/3492C08K5/526C08K5/134C08K5/13C08K5/098
CPCC08K3/32C08K3/34C08K5/098C08K5/13C08K5/1345C08K5/34922C08K5/526C08K9/04C08K13/06C08K2003/323C08L2201/02C08L2201/08C08L25/06
Inventor 刘凯
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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