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Environment-friendly light building formwork and manufacturing method

A technology of building formwork and polypropylene, which is applied in the field of building formwork and its preparation, which can solve the problems of easy aging, insufficient strength and rigidity of the formwork, large coefficient of thermal expansion and contraction, etc., and achieve the effect of excellent high temperature resistance

Inactive Publication Date: 2016-02-17
赖雯颖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently commercially available composite plastic building templates are mainly based on thermoplastic recycled polyolefins such as polypropylene, polyethylene, and polyvinyl chloride, and the density of these products is greater than 0.90g / cm 3 , has the disadvantages of large coefficient of thermal expansion and contraction, easy to become brittle at low temperature, not wear-resistant, easy to age, etc.
Therefore, in the process of development and application in the construction field, there are still some practical problems, such as the strength and rigidity of the formwork when used as a wall column formwork cannot meet the requirements, the thermal expansion and contraction coefficient of the formwork is large, and the welding slag is easy to burn during construction Bad panels, etc., which requires improving the comprehensive performance of building formwork

Method used

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  • Environment-friendly light building formwork and manufacturing method
  • Environment-friendly light building formwork and manufacturing method
  • Environment-friendly light building formwork and manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A building formwork, the components are calculated by weight parts: A 5-10 parts of glass fiber reinforced polypropylene, 80-90 parts of high melt strength polypropylene, C-homopolypropylene or 30% calcium carbonate polypropylene 10-30 parts, D-foaming agent 3-8 parts, E-color masterbatch 1-4 parts.

[0023] Its preparation method is as follows:

[0024] (1) Put A into the A extruder and extrude through mixing and plasticizing, high melt strength polypropylene (HMSPP) is added into the foaming agent and then put into the hopper of the B extruder and extrude through mixing and plasticizing, and C is put into C Extruded through mixing and plasticizing in the hopper of the extruder;

[0025] (2) Divide B extrudate and C extrudate obtained in step (1) into double-layer composites of B and C through a distributor, and then enter a superposition machine to superimpose and extrude a superimposed layered composite of 16-3000 layers; superimposition Composite body, A extruded ...

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Abstract

The invention provides a building formwork. The building formwork is characterized by comprising an overlaid composite body formed by overlaying double-layer composite bodies of B and C by 16-3,000 layers, wherein B is high melt strength polypropylene (HMSPP) foaming materials, and C is homo-polypropylene or calcium carbonate polypropylene. The building formwork has the advantages of being light, high in strength and recoverable, and the use frequency ranges from 100 to 300.

Description

technical field [0001] The invention relates to a building template and a preparation method. Background technique [0002] In the field of construction, steel molds and wooden molds are usually used in the pouring process, which has problems such as deformation and overweight, increased labor intensity, low number of uses, difficult recycling, and poor water absorption. In the field of building formwork, plastic building formwork is a building formwork that does not require wood or steel. It can be sawed, drilled, planed, nailed, and welded, and has corresponding strength, which can meet the requirements of building formwork. performance. [0003] Currently commercially available composite plastic building templates are mainly based on thermoplastic recycled polyolefins such as polypropylene, polyethylene, and polyvinyl chloride, and the density of these products is greater than 0.90g / cm 3 , has the disadvantages of large coefficient of thermal expansion and contraction, ...

Claims

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Application Information

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IPC IPC(8): E04G9/05
CPCE04G9/05
Inventor 赖雯颖
Owner 赖雯颖
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