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A high-strength stress-absorbing film material and its preparation method

A stress-absorbing, membrane material technology, applied in the direction of fiber type, textile and papermaking, conjugated synthetic polymer rayon, etc., can solve the problems of poor mechanical properties of stress-absorbing membrane materials, optimize stress-absorbing strength, improve Mechanical properties, the effect of low density

Active Publication Date: 2021-08-31
南通市交通建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of poor mechanical properties of stress-absorbing membrane materials, this application provides a high-strength stress-absorbing membrane material and its preparation method, adopting the following technical solutions:

Method used

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  • A high-strength stress-absorbing film material and its preparation method
  • A high-strength stress-absorbing film material and its preparation method

Examples

Experimental program
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Effect test

preparation example 1

[0040] Preparation of modified aramid fiber: Take 1000g of aramid fiber and add it to 6000g of 8% calcium chloride solution by mass fraction, keep it warm at 75°C for 3 hours, let it cool down to room temperature, wash it with deionized water for 3 times, and dry it to obtain Pre-treated aramid fibers; take another 100 g of pre-treated aramid fibers, 450 g of 2% dopamine aqueous solution and 450 g of deionized water, stir and mix them and let them stand at room temperature for 20 hours, then centrifuge and collect the lower precipitate, and vacuum freeze-dry , to obtain modified aramid fiber 1;

[0041] Preparation of thermoplastic elastomer fiber: take 1000g thermoplastic elastomer and place it in a micro-mixing extruder, melt spinning process and collect the spun blended elastomer fiber, control the spinning temperature to 160°C, and the winding temperature to 15r / min, the screw speed is 25r / min, and the thermoplastic elastomer fiber 1 with a diameter of 0.2mm is collected,...

preparation example 2

[0043] Preparation of modified aramid fiber: Take 1000g of aramid fiber and add it to 7000g of 8% calcium chloride solution by mass fraction, heat it at 77°C for 4 hours, let it stand and cool to room temperature, wash it with deionized water for 4 times, and dry it to obtain Pre-treated aramid fiber; take 125 g of pre-treated aramid fiber, 475 g of 2% dopamine aqueous solution and 475 g of deionized water, stir and mix and let stand at room temperature for 22 hours, centrifuge and collect the lower layer of precipitate, vacuum freeze-dry , to obtain modified aramid fiber 2;

[0044] Preparation of thermoplastic elastomer fibers: take 1500g thermoplastic elastomer and place it in a micro-mixing extruder, melt spinning process and collect the spun blended elastomer fibers, control the spinning temperature to 165°C, and the winding temperature to 17r / min, the screw speed is 26r / min, and the thermoplastic elastomer fiber 2 with a diameter of 0.3mm is collected, and the thermopla...

preparation example 3

[0046] Preparation of modified aramid fibers: Take 1000g of aramid fibers and add them to 8000g of 8% calcium chloride solution by mass fraction, heat-preserve and react at 80°C for 5h, let stand and cool to room temperature, wash with deionized water for 5 times, and dry to obtain Pre-treated aramid fibers; take another 150 g of pre-treated aramid fibers, 500 g of 2% dopamine aqueous solution and 500 g of deionized water, stir and mix them and place them at room temperature for 24 hours, then centrifuge and collect the lower precipitate, and vacuum freeze-dry , to obtain modified aramid fiber 3;

[0047] Preparation of thermoplastic elastomer fiber: take 2000g thermoplastic elastomer and place it in a micro-mixing extruder, melt spinning process and collect the spun blended elastomer fiber, control the spinning temperature to 170°C, and the winding temperature to 18r / min, the screw speed is 28r / min, and the thermoplastic elastomer fiber 3 with a diameter of 0.5mm is collecte...

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Abstract

This application relates to the field of building construction, and specifically discloses a high-strength stress-absorbing membrane material and a preparation method thereof. The high-strength stress-absorbing membrane material includes a base cloth layer and an absorbing layer, and the absorbing layer includes the following substances in parts by weight: 6 ~8 parts of HDPE resin; 35~45 parts of base asphalt; 10~15 parts of modified fibers; the modified fibers include thermoplastic elastomer fibers with a diameter of 0.2~0.5mm. This application uses thermoplastic elastomers to replace the waste rubber tires or rubber particle materials used in traditional solutions to optimize the stress absorption strength of the stress-absorbing film. At the same time, this application uses a fiber structure to replace the traditional rubber powder structure, thereby further improving the stress-absorbing film. The high-strength stress that the material can bear in actual use and repair effectively improves the mechanical properties of the stress-absorbing membrane material.

Description

technical field [0001] The application relates to the field of building construction, more specifically, it relates to a high-strength stress-absorbing membrane material and a preparation method thereof. Background technique [0002] The pavement structure commonly used in cold regions is a semi-rigid base asphalt concrete pavement structure. The semi-rigid base itself has good integrity and elasticity. Setting the semi-rigid base on the roadbed can effectively ensure the stability of the road subgrade. However, the semi-rigid base is very prone to cracks due to untimely maintenance during construction or under the influence of temperature changes. If the surface layer is a cement concrete pavement structure, the impact of the cracks produced by the semi-rigid base on the cement concrete pavement is not obvious in the short term. , but for asphalt concrete pavement, the cracks in the semi-rigid base will reflect upward to the asphalt concrete pavement in the early stage of r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/04D06N3/00D06M15/37D06M11/155D01F8/10D01F8/16D06M101/36
Inventor 顾世俊徐青松孙玉吴金伟
Owner 南通市交通建设工程有限公司
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