Halogen-free flame-retardant polyethylene functional material for aluminum-plastic composite board and preparation thereof

A technology for flame-retardant polyethylene and aluminum-plastic composite panels, which is applied in the field of halogen-free low-smoke environment-friendly flame-retardant polyethylene functional materials and their preparation, can solve the problem of slow extrusion molding speed, low yield of panels, and poor aluminum-plastic panels. meet and other problems, to achieve the effects of good flame retardant performance and thermal stability, excellent physical and mechanical properties, and easy process control

CN101280083AInactive Publication Date: 2008-10-08HUNAN KEOCT MATERIALS +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-10-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a halogen-free flame-retardant polyethylene functional material for APCP and the preparation method of the material. The material has the following components and contents (based on weight proportion): 25-40% of polyethylene, 2.5-25% of modified polyethylene, 32-50% of brucite powders, 0.1-10.0% of silicone flame retardants, 0.5-3.5% of coupling agent, 0.5-8.5% of synergist, and 0.25-1.5% of antioxidant. The technical performance indicators of the material of the invention are as follows: 12.5 to19.5MPa for tensile yield strength, 30 to 230% for ultimate elongation, 15.5 to24.5 MPa for bending strength, 19.0 to 25.0KJ / m2 for notch impact strength, 85 to 95 DEG C for Vicat softening temperature, 1.25 to 1.37 g / cm3 for density, 32 to 36% for oxygen index, and 0.25 to 1.50g / 10min for melt flow rate; besides, the environmental protection index of the material meets the International Safety Standards IEC62321, in line with the requirements of ROHS Directive. The preparation method of the invention is to use vacuum exhaust-type parallel twin-screw extruding hot-cutting and granulating technology to prepare the material. The raw materials of the invention can be easily obtained and the technology is easy to control; besides, the material of the invention has the advantages of excellent comprehensive performance and cost ratio, as well as good flame-retardant properties and thermal stability, which can be extruded and molded through injection and can realize large-scale continuous production.
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Description

technical field

[0001] The invention relates to a flame-retardant polyethylene functional material for aluminum-plastic composite boards and a preparation method thereof, in particular to a cost-effective, halogen-free, low-smoke, and environment-friendly flame-retardant polyethylene functional material and a preparation method thereof. Background technique

[0002] The flame-retardant polyethylene core material for aluminum-plastic composite panels disclosed, used, and sold before the patent application is a traditional halogen-free flame-retardant polyethylene core material containing part or all of aluminum hydroxide and / or intumescent flame retardants. Two kinds of halogen-containing flame-retardant core materials and halogen / antimony flame-retardant polyethylene. Compared with this patent, although the former is a halogen-free flame-retardant polyethylene core material, because the flame retardant in the material contains part or all of aluminum hydroxide and / or intumes...

Examples

Embodiment Construction

[0025] The halogen-free flame-retardant polyethylene material for the aluminum-plastic composite board of the present invention is combined with the traditional halogen-free flame-retardant core material and halogen / antimony flame-retardant polyethylene containing part or all of aluminum hydroxide and / or intumescent flame retardants. Compared with the halogen-containing flame-retardant core material, it not only does not contain halogen at all, and does not drip when melted, but also relies on the inorganic mineral brucite powder, organic silicon-based flame retardant and synergist that have been surface-treated by coupling activation, and can withstand a high temperature of 230 ° C. The endothermic decomposition reaction in the (combustion) environment produces harmless carbon dioxide gas and water for cooling and dilution, as well as metal oxides and carbon-silicon compounds that can cover the surface of the material and act as a barrier.

[0026] Due to the above-mentioned s...