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Non-halogen flame-resistant sandwich materials with polyethylene for fire-proof aluminium plastic plate and production thereof

A technology of flame-retardant polyethylene and aluminum-plastic panels, which can be used in fire prevention and building components, etc. It can solve the problem of the decrease of mechanical properties such as toughness and strength of polymer materials, poor processing fluidity and dispersion of core materials, and composite materials. Extrusion granulation temperature is high, to achieve the effect of improving processing stability, enhancing toughness, and good processing performance

Active Publication Date: 2007-10-10
南通金威复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A high amount of addition causes a significant decrease in the mechanical properties of the polymer material such as toughness and strength
[0003] Chinese patent application 02113998.9 discloses a halogen-free flame-retardant polyethylene core layer material for fireproof aluminum-plastic panels and its preparation method. The material contains polyethylene 10-40% (weight percentage, the same below), modified polyethylene 5-20% %, halogen-free flame retardant 35-65%, flame retardant synergist 0.5-10%, other additives 2.5-8.5%; other additives include coupling agent, dispersant, rheological agent, antioxidant , ultraviolet absorber, crosslinking agent, colorant; halogen-free flame retardants are aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, basic magnesium sulfate; so the core material of this application belongs to the use of metal oxide flame retardant The flame-retardant polyethylene of the system; due to the high content of the halogen-free flame retardant used, in order to prevent the decline of mechanical properties, the core material of the application also contains modified polyethylene (ethylene-vinyl acetate copolymer (EVA), etc. and / or polar graft copolymers of polyolefins and unsaturated monobasic acids / unsaturated dibasic acids / maleic anhydride), but these copolymers are more cohesive, which leads to the processing of core materials The fluidity and dispersibility are not very good. If polar graft copolymers are used, the compatibility with polyethylene is not very ideal, and its mechanical properties still need to be further improved.
And because the cost of magnesium hydroxide is relatively high, and the extruding granulation temperature of the composite material is as high as 180°C-200°C, so the energy consumption is high and the cost is also high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 55

[0046] Example 55 corresponds to Example 1, Example 56 corresponds to Example 2, and so on until Example 108 corresponds to Example 54, and the rest of Examples 55 to 108 are the same as the corresponding examples , the difference is that: the coupling agent used is vinyltrisilane. The mechanical properties and flame-retardant performance data of the core material obtained in these examples are basically the same as the corresponding data of the corresponding examples, and the specific combustion performance data of the prepared fireproof aluminum-plastic panel of the core material are the same as those of the corresponding examples. The corresponding data are basically the same.

Embodiment 1

[0048] Example 108 corresponds to Example 1, Example 109 corresponds to Example 2, and so on until Example 162 corresponds to Example 54, and the rest of Examples 108 to 162 are the same as the corresponding examples , The difference is that the coupling agent used is γ-propylmethacrylate trimethoxysilane. The mechanical properties and flame-retardant performance data of the core material obtained in these examples are basically the same as the corresponding data of the corresponding examples, and the specific combustion performance data of the prepared fireproof aluminum-plastic panel of the core material are the same as those of the corresponding examples. The corresponding data are basically the same.

Embodiment 1

[0050] Example 163 corresponds to Example 1, Example 164 corresponds to Example 2, and so on until Example 216 corresponds to Example 54, and the rest of Examples 163 to 216 are the same as the corresponding examples , The difference is that the coupling agent used is γ-aminopropyltriethoxysilane. The mechanical properties and flame-retardant performance data of the core material obtained in these examples are basically the same as the corresponding data of the corresponding examples, and the specific combustion performance data of the prepared fireproof aluminum-plastic panel of the core material are the same as those of the corresponding examples. The corresponding data are basically the same.

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PUM

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Abstract

A non-halogen and fire-retardant polythene sandwich layer material for fireproof aluminum plate and its production are disclosed. The sandwich layer consists of low-density polythene 15-30 proportion, linear low-density polythene 15-20 proportion, polythene and octylene multi-polymer 3-15 proportion, aluminum hydrate 30-45 proportion, magnesium hydrate 10-15 proportion, fire-retardant synergist 2-25 proportion and coupler 0.5-5 proportion. The process is carried out by mixing aluminum hydrate and magnesium hydrate with coupler separately, mixing at 80-120 DEG C for 15-25mins by high-speed kneader, extruding out into strips by double-screw extruder, granulating by thermal cutting at 100-179 degrees C or cooling and granulating by dicing cutter to obtain final product. It has better machining fluidity, fire-retardant effect and mechanical performance.

Description

technical field [0001] The invention relates to a material used in a building decoration plate and a preparation method thereof, in particular to a halogen-free flame-retardant polyethylene composite material and a preparation method thereof. Background technique [0002] Fireproof aluminum-plastic panel is the abbreviation of fireproof aluminum-plastic composite panel. The fireproof aluminum-plastic composite panel is mainly composed of three layers of plates. They are the inorganic flame-retardant plastic core board (also called the core layer) in the middle, and the aluminum panel and aluminum metal base plate on the back. The inorganic flame-retardant plastic core board is obtained from the corresponding pellets through a board extrusion molding machine. The material used to manufacture the core board (core layer) is flame retardant modified polyethylene pellets (referred to as flame retardant polyethylene). This kind of flame retardant polyethylene is obtained on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B16/06C04B35/66C04B22/06E04B1/94
Inventor 周健
Owner 南通金威复合材料有限公司
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