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Self-repairing polypropylene skin material for surface of building template and preparation and use methods

A technology of building formwork and polypropylene, which is applied in the field of construction building formwork, can solve the problems of corrosion resistance and acid resistance, poor friction resistance, damage to formwork surface quality, and low reuse rate, achieve good corrosion resistance and water resistance, and realize green Sustainability and high reusability

Inactive Publication Date: 2019-11-01
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved is: the existing wood plywood formwork needs to be sprayed with a release agent, and there are problems of corrosion resistance, acid resistance and poor friction resistance; the formwork is in contact with concrete, and the mutual friction between the two will greatly affect the quality of the formwork surface. Destruction; after the formwork is removed, the formwork absorbs water and expands and deforms, causing serious damage, low reuse rate, and short service life

Method used

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  • Self-repairing polypropylene skin material for surface of building template and preparation and use methods
  • Self-repairing polypropylene skin material for surface of building template and preparation and use methods
  • Self-repairing polypropylene skin material for surface of building template and preparation and use methods

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Embodiment Construction

[0038] The thickness of the self-repairing polypropylene skin 1 used on the surface of the building formwork of the present invention is only 0.5-2 mm, and it is paved on the surface of the building formwork 4 and arranged in contact with the surface of the building formwork 4 .

[0039] The skin 1 of the present invention can be fixedly or not fixedly connected with the building formwork 4, without affecting the pouring construction of the concrete in the formwork; its specific use method includes the following steps:

[0040] Step A, cleaning the surface of the building formwork 4, erasing impurities on the surface, avoiding damage to the skin 1 caused by raised and sharp objects; the skin 1 prepared by the present invention is suitable for building formwork 4 of any material type;

[0041] Step B, setting the skin 1 fit cover on the outer surface of the building template 4;

[0042] According to the structure of the skin 1, the installation of the skin 1 can be divided into...

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Abstract

The invention relates to the technical field of construction building templates, and discloses a self-repairing polypropylene skin material for the surface of a building template and preparation and use methods thereof. The skin material is in contact with the surface of the building template and comprises the following components in parts by weight: 100 parts of polypropylene, 5-20 parts of polypropylene elastomer, 5-20 parts of ethylene propylene diene monomer, 1-10 parts of repairing agent, 5-20 parts of filler, 5-20 parts of flame retardant, 0.1-3 parts of antioxidant, 0.1-3 parts of ultraviolet light absorber and 0.1-3 parts of a dispersing agent. The material is attached to the surface of the existing building template for use, has good demoulding property, is tough and scratch-resistant, and can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of construction building templates, in particular to a self-repairing polypropylene skin used on the surface of building templates and a preparation and use method. Background technique [0002] Building formwork is a commonly used concrete forming mold in the field of civil engineering, and the formwork is removed after the concrete has formed a certain strength. In order to prevent the concrete from sticking to the formwork and increase the difficulty of demolition, a release agent is usually sprayed on the inner surface of the building formwork to isolate or lubricate between the concrete and the formwork. Traditional building formwork release agents mainly include waste engine oil, gutter oil and soybean oil, etc. Although the cost is low, the release effect is average, and they are often prone to defects such as pores, pulverization and corrosion of the formwork. [0003] At present, in the domestic co...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/08C08L23/16
CPCC08L23/12C08L2205/035C08L23/14C08L23/0815C08L23/16
Inventor 孙志鹏王博秦杰屈建李艳稳
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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