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Fibre-reinforced polypropylene building template with hollow closed-pore structure

A fiber-reinforced, closed-cell structure technology, which is used in buildings, building structures, formwork/formwork components, etc., can solve the problem that the strength and modulus of hollow plastic or wood-plastic formwork are difficult to meet the requirements of formwork standards. Achieve the effect of light weight, high processing efficiency and convenient operation

Active Publication Date: 2012-05-09
高雁峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The huge resource consumption of building templates puts huge pressure on resources and the environment
In the past two decades, plastic formwork and wood-plastic formwork have appeared, but because building formwork is a "structural" material, the product is generally a solid structure, and the mechanical indicators such as strength and modulus of hollow plastic or wood-plastic formwork are difficult to meet the formwork standard requirements

Method used

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  • Fibre-reinforced polypropylene building template with hollow closed-pore structure
  • Fibre-reinforced polypropylene building template with hollow closed-pore structure
  • Fibre-reinforced polypropylene building template with hollow closed-pore structure

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1 The preparation of cylindrical hollow closed-cell building formwork

[0035] (1) Take polypropylene, chopped glass fiber, modified talcum powder, stearic acid, zinc stearate, lead sulfate, polyethylene wax, and chlorinated polyethylene in sequence of 100, 25, 10, 3, and 2 , 0.2, 3, 10 parts by weight, stir and mix evenly at 100-130°C at a high speed, and then extrude and granulate with a parallel twin-screw extrusion granulator to obtain panel pellets.

[0036] (2) Take polyethylene, wood flour fiber, modified talcum powder, stearic acid, zinc stearate, lead sulfate, polyethylene wax, and chlorinated polyethylene in sequence of 100, 110, 20, 3, 2, 0.3, 3, and 12 parts by weight are uniformly stirred at a high speed of 100-130° C., and then extruded and granulated by a parallel twin-screw extrusion granulator to obtain core material granules.

[0037] (3) Extrude the above-mentioned core material pellets through a pair of extruders with a cylindrical struct...

Embodiment 2

[0038] Embodiment 2: Replace the chopped glass fiber of embodiment 1 with 25 parts of wood fibers, and the others are the same as embodiment 1.

Embodiment 3

[0039] Embodiment 3: replace the chopped glass fiber of embodiment 1 with 20 parts of PET polyester fiber, other are the same as embodiment 1.

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Abstract

A fibre-reinforced polypropylene building template with a hollow closed-pore structure is disclosed, and is composed of an upper panel (1), a lower panel (1) and a core material between the two panels (1), wherein the core material is composed of a core plate (2) and columnar empty grids (3) having the same geometrical shape and closely arrayed or sparsely arrayed on the both surfaces of the core plate. The building template has high specific strength, high specific stiffness, a static load per square meter greater than 120 T, and an apparent density of only 0.5-0.75, so that the material consumption can be saved by 25-50% under the precondition of no degradation of the mechanical properties of the material. The building template is light in relative weight, convenient in operation, non-absorbent, mildew-proof, non-deformable, and long in service life. The building template is finished on the same production line, so processing efficiency is high and energy consumption can be saved by over 40%.

Description

1. Technical field [0001] The invention relates to a building template, in particular to a fiber-reinforced polypropylene building template with a hollow closed-cell structure. 2. Background technology [0002] Building formwork is an important tool in the construction of concrete structures. Experts pointed out that in cast-in-place concrete structure engineering, formwork engineering generally accounts for 20-30% of the cost of concrete structure engineering, 30-40% of engineering labor, and about 50% of construction period. Formwork technology directly affects the quality, cost and benefit of engineering construction, so it is an important content to promote the progress of my country's construction technology. [0003] From 2011 to 2012, the average annual production scale growth rate of my country's building formwork industry will be about 15%; by the end of 2012, the output of my country's building formwork industry will reach about 300 million square meters. [0004...

Claims

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Application Information

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IPC IPC(8): E04G9/05
Inventor 高雁峰
Owner 高雁峰