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High-strength aluminum-plastic composite template and preparation method thereof

An aluminum-plastic composite, high-strength technology, applied in the field of building construction tooling, can solve the problems of high moisture absorption of nylon and difficulty in applying concrete formwork, etc., to improve heat insulation performance, facilitate molding and maintenance, and improve durability Effect

Inactive Publication Date: 2022-06-03
安徽海铭塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nylon has high moisture absorption, and its water absorption mass fraction can reach 2%-4% in general humid environments. After absorbing water, it produces a plasticizing effect, which is difficult to apply to concrete formwork.

Method used

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  • High-strength aluminum-plastic composite template and preparation method thereof
  • High-strength aluminum-plastic composite template and preparation method thereof
  • High-strength aluminum-plastic composite template and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The present embodiment prepares a kind of modified PA resin, and the specific implementation process is as follows:

[0033] Step A1: Take a three-necked flask equipped with a stirrer and a thermometer, add 100 g of 3,5-dimethylbenzoic acid to the three-necked flask, and then add 800 mL of xylene to start stirring, and no 3,5-dimethylformaldehyde can be seen when stirring for 8 minutes. The benzoic acid has been completely dissolved, and then 90 mL of thionyl chloride was added to the three-necked flask, and the three-necked flask was heated in a water bath. When the temperature reached 50 °C, the heat preservation reaction was carried out for 3 hours. After the reaction, the alcohol lamp was used for heating until the The temperature of the reaction solution reaches 140°C, the temperature difference is allowed to float by 2°C, and high-speed stirring is performed for 5 minutes to decompose the unreacted thionyl chloride, and at the same time, a small amount of solvent x...

Embodiment 2

[0037] The present embodiment prepares a kind of modified PA resin, and the specific implementation process is as follows:

[0038] Step A1: Take a three-necked flask equipped with a stirrer and a thermometer, add 100 g of 3,5-dimethylbenzoic acid to the three-necked flask, and then add 1200 mL of xylene to start stirring, and no 3,5-dimethylformaldehyde can be seen when stirring for 7 minutes. The benzoic acid has been completely dissolved, and then 110 mL of thionyl chloride was added to the three-necked flask, and the three-necked flask was heated in a water bath. When the temperature reached 55 °C, the thermal insulation reaction was carried out for 5 h. After the reaction was completed, use an alcohol lamp to heat until The temperature of the reaction solution reaches 140°C, the temperature difference is allowed to float by 2°C, and high-speed stirring is performed for 5 minutes to decompose the unreacted thionyl chloride, and at the same time, a small amount of solvent xy...

Embodiment 3

[0042] This example prepares a high-strength aluminum-plastic composite template, please refer to Figure 1-Figure 2 The specific implementation process is as follows:

[0043] Step S1: Take four groups of aluminum corner protectors 10, the aluminum corner protectors 10 are formed into a 90° plate shape, and a bottom plate is provided on the bottom surface of the aluminum corner protectors 10 to provide welding sites, and the four groups of aluminum corner protectors 10 are placed on the bottom surface of the aluminum corner protector 10. The corner of the mold is positioned, and then the aluminum bracket 20 is taken. The middle of the aluminum bracket 20 is provided with a support ring, which is used to provide a support point when the mold is closed, and the force is evenly distributed to prevent the support from cracking the template. The aluminum bracket 20 The ends of 4 groups of aluminum corner protectors 10 are welded and fixed respectively;

[0044] Step S2: Take 10kg...

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Abstract

The invention relates to a high-strength aluminum-plastic composite template and a preparation method thereof, and belongs to the technical field of building construction tools. The composite formwork comprises an aluminum angle bead and an aluminum support fixedly connected with the aluminum angle bead, the aluminum angle bead protects the tip of a modified PA plate, slurry leakage caused by knocking damage from the tip when the formwork is assembled and disassembled is avoided, the aluminum support has a bearing effect on the whole modified PA plate, a supporting ring in the middle provides a supporting site, stress is evenly dispersed, the situation that the formwork is pressed against and cracked by a supporting piece is avoided, and the service life of the modified PA plate is prolonged. A modified PA plate is poured on the inner side of the aluminum bracket; the modified PA plate is formed by polymerizing diacid containing benzene rings and diamine, a main chain contains a large number of benzene rings and has high rigidity, fluorine-containing groups are introduced into diacid polymerization monomers through hexafluoroisopropanol, fluorine atoms of side chains are spirally distributed along the main chain after polymerization, the main chain is tightly shielded, water absorption is reduced, and the service life of the modified PA plate is prolonged. The tolerance performance is improved, and the water absorption rate of the modified PA plate is about 0.2% through tests.

Description

technical field [0001] The invention belongs to the technical field of building construction tooling, and in particular relates to a high-strength aluminum-plastic composite template and a preparation method thereof. Background technique [0002] The building formwork is a temporary support structure, which is made according to the design requirements, so that the concrete structure and components are formed according to the specified position and geometric size, maintain their correct position, and bear the self-weight of the building formwork and the external load acting on it. [0003] The traditional building formwork includes wooden formwork and steel formwork, among which the wooden formwork is not strong and easily damaged, and the steel formwork is cumbersome and inconvenient to assemble, so various composite formwork are born, such as steel-wood composite mould, aluminum composite mould and aluminum-plastic composite mould. The aluminum-plastic composite mold is fav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/00C08L77/10C08K7/28C08K3/04C08J5/18C08G69/32
CPCB29D7/00C08J5/18C08G69/32C08J2377/10C08K7/28C08K3/04
Inventor 张海侠张涛征义
Owner 安徽海铭塑业有限公司
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