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ZnO-synergized montmorillonite flame-retardant polystyrene nanocomposite and preparation method thereof

A polystyrene nano-composite material technology, applied in the field of polymer flame retardant, can solve the problems of polymer matrix mechanical properties, processing performance damage, poor compatibility between MMT and polymer, and insignificant flame retardant effect, and achieves resistance to Remarkable effect of combustion and smoke suppression, easy to expand large-scale production, excellent flame retardant and smoke suppression performance

Inactive Publication Date: 2013-11-20
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inorganic silicon flame retardants such as MMT still have poor compatibility with the polymer matrix, which leads to damage to the mechanical properties and processing properties of the polymer matrix; on the other hand, in addition to releasing a large amount of heat during combustion, PS also has A large amount of black smoke and toxic gas will be released, causing a large number of people to die due to smoke suffocation during a fire
Therefore, how to solve technical bottlenecks such as poor compatibility between MMT and polymers, insignificant flame retardant effect, and poor smoke suppression effect will be extremely critical for the wide application of MMT flame retardants.

Method used

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  • ZnO-synergized montmorillonite flame-retardant polystyrene nanocomposite and preparation method thereof
  • ZnO-synergized montmorillonite flame-retardant polystyrene nanocomposite and preparation method thereof
  • ZnO-synergized montmorillonite flame-retardant polystyrene nanocomposite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of a ZnO synergistic montmorillonite flame retardant polystyrene nanocomposite:

[0032] (1) Components and parts by mass are as follows:

[0033] General-purpose polystyrene resin (PG-383, purchased from Taiwan Chi Mei Industrial Co., Ltd.): 75 copies;

[0034] Cetyltrimethylammonium chloride modified sodium-based montmorillonite (see Zhang JC, Zhang ZP, Hu B, Liu G. New methods of prepatation and property study of the montmorillonite modified with CTAB. Materials and Design , 2011, 284-286,: 377-381): 5 copies;

[0035] ZnO microrod (purchased from Shanghai Yuejiang Titanium Dioxide Chemical Products Co., Ltd.): 0.5 part;

[0036] MPP (purchased from Nantong Sier Chemical Co., Ltd.): 15 copies;

[0037] SBS (purchased from Nanjing Jintian Plastic Co., Ltd.): 2 copies;

[0038] Other common PS additives: 2.5 parts;

[0039] (2) Preparation method: The above materials are put into a high-speed mixer for stirring, the stirring speed is set to 200 rpm, an...

Embodiment 2

[0042]A preparation method of ZnO synergistic montmorillonite flame retardant polystyrene nanocomposite material, which is different from Example 1 in the formula in step (1): general polystyrene resin: 67.5 parts, 18 parts Alkyltrimethylammonium chloride modified sodium-based montmorillonite: 1 part, ZnO microrod: 1 part, MCA: 20 parts, SEBS: 10 parts, other common PS additives: 0.5 part.

[0043] The temperature setting of the twin-screw extruder in step (3) is as follows:

[0044] Zone 1 (°C)

Embodiment 3

[0045] Example 3. A preparation method of ZnO synergistic montmorillonite flame retardant polystyrene nanocomposite material, which is different from Example 1 in the formula in step (1): general polystyrene resin: 80, dodecane Sodium-based montmorillonite modified with trimethylammonium chloride: 2, ZnO microrod: 0.1, MPP: 15, SEPS: 2 parts, other common PS additives: 0.9

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Abstract

The invention discloses a ZnO-synergized montmorillonite flame-retardant polystyrene nanocomposite and a preparation method thereof. The composite comprises the following compositions in parts by mass: 65-80 parts of polystyrene, 1-10 parts of organic modifying agent-modified montmorillonite, 0.1-5 parts of ZnO microrods, 5-20 parts of nitrogen flame retardant, 2-10 parts of flexibilizer and 0.5-5 parts of auxiliaries, wherein the mass ratio of the organic modifying agent-modified montmorillonite to ZnO microrods is (20:1)-(1:1). The preparation method comprises the steps of placing the compositions into a high-speed agitator for evenly agitating, and extruding through a double-screw extruder, and pelletizing. The polystyrene nanocomposite is prepared by adopting one-dimensional ZnO microrods to be synergized with two-dimensional laminar montmorillonite and conducting flame retardance to the polystyrene, the flame-retardant and smoke-suppressive properties of the composite can be effectively improved by utilizing the synergy action between the ZnO microrods and the nano montmorillonite, the synergic flame-retardant effect of the ZnO can be obviously embodied, and the flame-retardant effect is good.

Description

technical field [0001] The invention relates to a preparation method of a halogen-free flame retardant polymer nanocomposite material, and belongs to the technical field of polymer flame retardant. Background technique [0002] Polystyrene (PS) is a colorless and transparent general-purpose plastic with low price, high strength and modulus and good manufacturability. However, PS is brittle and flammable, which limits its application. Therefore, most of polystyrene can be used after toughening and flame retardant modification. Halogen-containing flame retardants will release toxic hydrogen halide gas and produce highly toxic dioxins and other substances during high heat, which has a very serious impact on the environment. Therefore, the use of halogen-based flame retardants is gradually limited. Flame retardants have been paid more and more attention by people. [0003] As a typical representative of halogen-free flame retardants, inorganic flame retardants have the greate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L53/02C08L23/08C08K13/06C08K9/04C08K3/34C08K7/08C08K3/22C08K5/3492C08K5/315
Inventor 韩永芹申明霞段鹏鹏郭义袁宗阳
Owner HOHAI UNIV
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