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Multi-layer composite coining building shuttering and manufacture method thereof

A building formwork and multi-layer composite technology, which is applied to the on-site preparation of building components, formwork/formwork components, and construction, etc., can solve the problems of not being able to use mixed waste plastics, reducing the bonding strength of the phase interface, and low mechanical properties of the product. , to achieve the effect of eliminating fire hazards, reducing quality requirements and low raw material requirements

Inactive Publication Date: 2008-08-27
BEIJING HENGTONG INNOVATION LUXWOOD TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The patent application with the application number CN02157950.4 discloses a wood-plastic composite material produced by extrusion method and its preparation method. Due to the extrusion method production process, the ratio of the main raw material thermoplastic resin to the wood-based material is roughly the same , due to the large amount of resin used and the inability to use mixed waste plastics, it will inevitably lead to high production costs
The patent application with the application number 200610012781.1 discloses a single-layer wood-plastic composite board produced by molding method and its preparation method. The ratio of the main raw material thermoplastic resin to the wood-type material is roughly 3:7, although the amount of resin is reduced. , but due to the decrease in the bonding strength of the wood-based material and the resin phase interface, the mechanical properties of the product are low
In addition, since wood-based materials and resins are combustible materials, there is bound to be a fire hazard

Method used

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  • Multi-layer composite coining building shuttering and manufacture method thereof
  • Multi-layer composite coining building shuttering and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Lay flame-retardant PP sheet, glass fiber reinforced net mat, wood-plastic composite material raw materials (recycled polyethylene accounts for 25wt%, sawdust accounts for 65wt%, processing aid 10wt%) in the mold, glass fiber reinforced Net felt, flame retardant PP sheet, and finally complete the material paving;

[0025] 2) Roll the mold into the hot press machine for hot pressing operation, the hot pressing pressure is 3.0 MPa, the hot pressing temperature is 250°C, and the hot pressing time is 20 minutes;

[0026] 3) Then send the mold into the cold press for cold pressing operation, the cold pressing pressure is 8.0MPa, and the cold pressing is demoulded at 40°C. After trimming and trimming, the multi-layer composite molded building formwork is obtained. The thickness of the flame-retardant layer 1 is 0.8mm , the thickness of the reinforced layer 2 is 1.0mm, and the thickness of the supporting layer 3 is 10mm, such as figure 1 and 2 shown.

Embodiment 2

[0028] 1) Lay flame-retardant ABS sheets, glass fiber reinforced net mats, and wood-plastic composite materials (regenerated acrylonitrile-butadiene-styrene plastics account for 20 wt%, wood debris accounts for 70 wt%, processing aids) in the mold. agent 10wt%), glass fiber reinforced mesh felt, flame-retardant ABS sheet, and finally complete the paving of the material;

[0029] 2) Roll the mold into a hot press machine for hot pressing operation, the hot pressing pressure is 3.5 MPa, the hot pressing temperature is 260°C, and the hot pressing time is 25 minutes;

[0030] 3) Then send the mold into the cold press for cold pressing operation, the cold pressing pressure is 9.0MPa, and the cold pressing is demoulded at 45°C. After trimming and trimming, the multi-layer composite molded building formwork is obtained, such as figure 1 and 2 shown. The thickness of the flame retardant layer 1 is 1.0mm, the thickness of the reinforcement layer 2 is 1.2mm, and the thickness of the s...

Embodiment 3

[0032] 1) Lay flame-retardant PP sheet, glass fiber reinforced mesh, wood-plastic composite raw materials (regenerated polyvinyl chloride 15wt%, crop straw 75wt%, processing aid 10wt%), glass fiber reinforced mesh in the mold in sequence , flame-retardant PP sheet, and finally complete the paving of the material;

[0033] 2) Roll the mold into the hot press machine for hot pressing operation, the hot pressing pressure is 4.0 MPa, the hot pressing temperature is 280°C, and the hot pressing time is 30 minutes;

[0034] 3) Send the mold to the cold press for cold pressing operation, the cold pressing pressure is 10.0MPa, and the cold pressing is demoulded at 40°C. After trimming and trimming, the multi-layer composite molded building formwork is obtained. The thickness of the flame retardant layer 1 is 1.2mm , the thickness of reinforcement layer 2 is 1.5mm, and the thickness of support layer 3 is 20mm, such as figure 1 and 2 shown.

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Abstract

A multilayer composite die-stamping building template and a preparation method thereof belong to the environment friendly material field. The prior composite template has high preparation cost, fire hidden danger and poor mechanical property. The composite template has a five-layer structure, wherein the middle layer is a support layer 3; the upper side and the lower side of the support layer 3 are respectively provided with reinforcing layers 2; both reinforcing layers 2 are respectively provided with an antiflaming layer 1 at one side; the thickness of the antiflaming layer 1 is 0.8 to 1.2 mm, while that of each reinforcing layer 2 is 1.0 to 1.5 mm and that of the support layer 3 is 8 to 20 mm. Through laying each layer of material in turn inside a mould, the mould is entangled in a hot press to complete hot pressing and the multilayer composite die-stamping building template is obtained through cold pressing shaping; moreover, hot pressing temperature is 150 to 280 DEG C and hot pressing pressure is 2.5 MPa to 4.0MPa, while cold pressing pressure is 8.0 to10 MPa and time is 20 to 40 min. The multilayer composite die-stamping building template has the advantages of simple process, low cost, excellent mechanical property of a composite template and no fire hidden risk, etc.

Description

technical field [0001] The invention belongs to the field of environmental protection materials, and in particular relates to a multi-layer composite molded building template and a preparation method thereof. Background technique [0002] The patent application with the application number CN02157950.4 discloses a wood-plastic composite material produced by extrusion method and its preparation method. Due to the extrusion method production process, the proportion of the main raw material thermoplastic resin of the material and the wood-type material is roughly the same. , due to the large amount of resin and the inability to use mixed waste plastics, it will inevitably cause high production costs. The patent application with the application number 200610012781.1 discloses a single-layer wood-plastic composite board produced by molding method and its preparation method. The ratio of the main raw material thermoplastic resin to the wood-based material is roughly 3:7, although t...

Claims

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Application Information

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IPC IPC(8): E04G9/02B32B37/06B32B37/10B32B5/10B32B21/02B32B27/04E04G9/05C04B26/02C04B18/24
CPCY02W30/91
Inventor 孙志强薛平王秋艳贾明印倪绍良丁文赢
Owner BEIJING HENGTONG INNOVATION LUXWOOD TECH
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