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Core layer material of halogen-free flame retardant aluminum-plastic plate and manufacturing method thereof

A flame-retardant aluminum-plastic panel and a manufacturing method, which are applied to the core layer material for halogen-free flame-retardant aluminum-plastic panel and its manufacturing field, can solve the problems of reduced extrusion efficiency, influence of core material strength, foaming failure, and the like. achieve an environmentally friendly effect

Inactive Publication Date: 2014-01-29
JIANGSU KEYUE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can produce a foamed core material, the foamed body is large and uneven, which affects the strength of the foamed core material.
At the same time, because the temperature control of the foaming agent is relatively strict, it cannot be foamed at a higher temperature, otherwise it will cause foaming failure, so the extrusion temperature will need to be strictly controlled, which will reduce the extrusion efficiency and affect the extrusion process. Plate speed

Method used

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  • Core layer material of halogen-free flame retardant aluminum-plastic plate and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 As shown, 39 parts of low-density polyethylene (LDPE), 60 parts of surface-treated activated magnesium hydroxide (Mg(OH) 2 ) and 1 part of ethylene bisstearamide (EBS) were mixed uniformly in a high mixer to obtain extruded materials. The mixed material is fed into the screw extruder 5 through the hopper 6, and the barrel temperature of the screw extruder is set at 200 degrees to melt the material. The liquid carbon dioxide stored in the liquid storage tank 1 passes through the pressure control valve 2 to control the pressure of the carbon dioxide at the required pressure of 8.5 MPa when the carbon dioxide is in a critical state, and the gas in the critical state is sent to the pressure control valve 4 by the forward metering pump 3 After the pressure of the supercritical carbon dioxide is further increased to 10.5Mpa, the carbon dioxide in the critical state is delivered to the screw extruder 5 quantitatively and enters the screw extruder 5 through the g...

Embodiment 2

[0031] like figure 1 As shown, 30 parts of linear low-density polyethylene (LDPE), 9 parts of ethylene-vinyl acetate copolymer (EVA), 50 parts of surface-treated activated magnesium hydroxide (Mg(OH) 2 ), 10 parts of surface-treated aluminum hydroxide (Al(OH) 3 ), 1 part of fluoropolymer (PPA) is mixed uniformly in a high mixer to obtain extruded materials. The mixed material is fed into the screw extruder 5 through the hopper 6, and the barrel temperature of the screw extruder is set at 190 degrees to melt the material. The liquid nitrogen stored in storage tank 1 passes through pressure control valve 2 so that the pressure of nitrogen is controlled at the required pressure of 24.5 MPa when nitrogen is in a critical state, and the nitrogen in critical state is sent to guide pressure control valve 4 by forward metering pump 3, further After the pressure of the supercritical nitrogen is increased to 32.5Mpa, a certain amount of nitrogen in a critical state is delivered to the...

Embodiment 3

[0033] like figure 1 As shown, 30 parts of ethylene-vinyl acetate copolymer (EVA), 5 parts of low-density polyethylene (LDPE), 64 parts of surface-treated activated aluminum hydroxide (Al(OH) 3), 1 part of silicone is mixed uniformly in a high mixer to obtain extruded materials. The mixed material is fed into the screw extruder 5 through the hopper 6, and the barrel temperature of the screw extruder is set at 180 degrees to melt the material. The liquid nitrogen gas stored in storage tank 1 passes through pressure control valve 2 to control the pressure of nitrogen gas at the required pressure of 24.5 MPa when nitrogen gas is in a critical state, and the gas in critical state is sent to guide pressure control valve 4 by forward metering pump 3, further After the pressure of the supercritical nitrogen is increased to 35Mpa, a certain amount of nitrogen in a critical state is delivered to the screw extruder 5 and enters the screw extruder 5 through the gas injection control val...

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Abstract

The invention discloses a core layer material of a halogen-free flame retardant aluminum-plastic plate. The core layer material is characterized by comprising the following components by weight percent: 10-70% of resin, 20-80% of inorganic fire retardant, 0.1-5% of synergistic fire retardant, and 0.05-10% of assistant. The core layer material of the halogen-free flame retardant aluminum-plastic plate has the advantages that supercritical fluid of nitrogen or carbon dioxide is adopted as a foaming agent; the core layer material is friendly to environment, and does not generate any bad effect on the environment; meanwhile, the solubility of supercritical nitrogen or carbon dioxide in melt is better than that of a chemical foaming agent; the supercritical nitrogen or carbon dioxide can be evenly dispersed into the filled melt; evenly dispersed foams can be formed; the size of each foam is smaller than that of abscess of the chemical foaming agent; the condition that the foamed aluminum-plastic plate has better strength and better heat-insulating property is ensured.

Description

technical field [0001] The invention relates to a core layer material for a halogen-free flame-retardant aluminum-plastic plate and a manufacturing method thereof. Background technique [0002] Casualties and property losses caused by building fires have risen sharply in recent years, and the country has also increased the flame-retardant and fire-resistant requirements for building materials. The decorative materials for the exterior walls must reach a certain level of fire protection. Due to the advantages of light weight, corrosion resistance, and heat insulation, aluminum-plastic panels have been rapidly developed as a building decoration material. In order to meet the requirements of flame retardancy, low-smoke and halogen-free flame-retardant aluminum-plastic panels have also been developed. For example, patent CN02113998. Combustible new materials for polyolefin aluminum-plastic panels. This kind of material is the main product of flame-retardant aluminum-plastic p...

Claims

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Application Information

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IPC IPC(8): C08L101/00C08K3/22C08K3/38C08K3/24C08K9/04C08K9/06C08J9/12C08L23/06C08L23/08
Inventor 李永陈梅
Owner JIANGSU KEYUE NEW MATERIAL CO LTD
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