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Flame-retardant building formwork and manufacturing method thereof
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A technology of building formwork and manufacturing method, which is applied in the fields of building, on-site preparation of building components, building structure, etc., can solve the problems of poor flame retardant performance of polypropylene and maintaining combustion, etc.
Inactive Publication Date: 2016-03-23
FUJIAN HAIYUAN NEW MATERIAL TECH
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Problems solved by technology
[0002] Due to the poor flame retardancy of polypropylene, when the building formwork of glass fiber reinforced polypropylene composite material encounters an open flame at a construction site, it cannot naturally extinguish the open flame and will keep burning. In order to solve this problem, the present invention has developed a flame retardant Building formwork and its manufacturing method
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[0026] B. Process parameters: According to polypropylene: glass fiber: expanded graphite = 65:30:5, the material is cut, the screw processing temperature is 220°C, and the molding pressure is 1500T / m 2 , the mold temperature is 30°C, and the holding time is 60s for production.
[0027] Ordinary building templates are cut according to the ratio of polypropylene: glass fiber = 70:30, the screw processing temperature is 220°C, and the molding pressure is 1500T / m 2 , the mold temperature is 30°C, and the holding time is 60s for production.
Embodiment 2
[0029] This part differs from Example 1 in that:
[0030] B. Process parameters: According to polypropylene: glass fiber: expanded graphite = 60:25:10, the material is cut, the screw processing temperature is 250°C, and the molding pressure is 2000T / m 2 , the mold temperature is 50°C, and the holding time is 120s.
Embodiment 3
[0032] This part differs from Example 1 in that:
[0033] B. Process parameters: According to polypropylene: glass fiber: expanded graphite = 50:20:15, the material is cut, the screw processing temperature is 200°C, and the molding pressure is 1700T / m 2 , the mold temperature is 20°C, and the holding time is 90s.
[0034] Verify the performance between the flame-retardant building formwork (i.e. adding 5% expanded graphite) and the common building formwork made in Example 1:
[0035] Comparing the open flame burning time of expanded graphite flame retardant template and normal template
[0036]
[0037] It can be seen from the above table that the flame-retardant building formwork with 5% expanded graphite added, the burning time and burning area of dripping molten iron are significantly reduced, and the flame-retardant effect is obvious.
[0038] After the welding molten iron is ignited on the construction site, a loose and porous worm-like substance obtained by high-t...
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Abstract
The invention provides a flame-retardant building formwork and a manufacturing method thereof. The flame-retardant building formwork is manufactured with, by weight, 50-60 parts of polypropylene, 20-30 parts of glass fiber and 5-15 parts of expanded graphite. The manufacturing method comprises the steps that the high-temperature expanded graphite is selected; blanking is carried out according to the weight ratio of polypropylene to the glass fiber to the expanded graphite =(50-65):(20-30):(5-15), and equipment programs are set; threaded rod mixing is carried out at the temperature of 200 DEG C-250 DEG C; mould pressure forming is carried out, the mould pressure is 800 T-2000 T / m<2>, and the mould temperature is 20 DEG C-50 DEG C; the pressure is kept, and finally a mould is opened to take out the formwork.
Description
technical field [0001] The invention specifically relates to a flame-retardant building template and a manufacturing method thereof. Background technique [0002] Due to the poor flame retardancy of polypropylene, when the building formwork of glass fiber reinforced polypropylene composite material encounters an open flame at a construction site, it cannot naturally extinguish the open flame and will keep burning. In order to solve this problem, the present invention has developed a flame retardant Construction formwork and method for making same. Contents of the invention [0003] One of the technical problems to be solved by the present invention is to provide a flame-retardant building formwork. [0004] The present invention is achieved in the following way: a flame-retardant building formwork, comprising the following components in parts by weight: 50-65 parts of polypropylene, 20-30 parts of glass fiber and 5-15 parts of expanded graphite; [0005] The expansion st...
Claims
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Application Information
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