Cold-resistant and high temperature-resistant composite material and preparation method thereof

A composite material and high temperature resistance technology, applied in the field of additives, can solve the problems of unstable quality of asphalt mixture, complicated production process of modified asphalt, inability to meet regional climate characteristics, etc., to shorten the construction period and achieve good acid-base compatibility. , The effect of reducing transportation and storage costs

Active Publication Date: 2011-04-27
深圳市天坤元环保科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

Although this technical product fills the gap in my country's asphalt modification technology and improves the high-temperature anti-rutting and low-temperature stability of asphalt pavement; however, the technical performance indicators are not ideal, and can only achieve a failure strain of not less than 2500 at -10°C. The dynamic stability at a high temperature of 60°C is not less than 2800, and the average service life of asphalt pavement is less than 5 years
These products cannot meet the complex regional climate characteristics of our country, and this technology requires investment in modified asphalt equipment, which increases the construction cost
In addition, the modified asphalt production process is complex, high energy consumption, high pollution, and unstable performance, easy to segregate during transportation, which makes the quality of the produced asphalt mixture unstable

Method used

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  • Cold-resistant and high temperature-resistant composite material and preparation method thereof
  • Cold-resistant and high temperature-resistant composite material and preparation method thereof
  • Cold-resistant and high temperature-resistant composite material and preparation method thereof

Examples

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preparation example Construction

[0078] Such as image 3 Shown, the preparation method of composite material of the present invention comprises the following steps:

[0079] a) Primary mixing step: Add ABS, PVB, SBS, SMN resin and lignocellulose to the horizontal mixer 1 of the silo device and mix and stir until uniformly obtained raw material mixture;

[0080] b) Secondary mixing step: Put the above-mentioned raw material mixture into the hopper 3 of the single-screw extruder through the transmission device 2, add diatomaceous earth, nano-calcium carbonate, JC-G530C reinforcing agent for mixing and stirring, and pass through the single-screw extruder 4 Extrusion of semi-finished composite materials;

[0081] c) Three mixing steps, introducing the semi-finished composite material into the twin-screw machine hopper 5, adding PE and EVA for mixing and stirring, and extruding through the twin-screw machine 6 to obtain the cold-resistant and high-temperature-resistant composite material.

[0082] In the prepara...

Embodiment 1

[0103] One mixing step, add 15 parts of ABS (Samsung ABS0150), 5 parts of PVB (Shanghai Sixi Chemical Co., Ltd.), 12 parts of linear SBS (Taiwan LGSBSPB-575), 25 parts of SMN resin, 0.3 parts of lignocellulose were mixed and stirred until uniform to obtain a raw material mixture; the temperature of the first mixing was room temperature, and the time was 5 minutes.

[0104] Secondary mixing step, putting the raw material mixture into the hopper of a single-screw extruder through a transmission device, adding 10 parts of diatomaceous earth, 17 parts of NPCC-701 modified nano-resin calcium carbonate (Warner Nano Materials Co., Ltd.) 10 parts of JC-G530C reinforcing agent (Jiuchuan Nano Material Technology Co., Ltd.) were mixed and stirred and the semi-finished composite material was extruded through a single-screw machine; the temperature of the second mixing step was controlled at 42°C to 53°C for 3 minutes.

[0105] Three mixing steps, introducing the semi-finished composite ma...

Embodiment 2

[0107] In one mixing step, add 12 parts of ABS, 10 parts of PVB, 10 parts of linear SBS, 20 parts of SMN resin, and 0.5 part of lignocellulose into the horizontal mixer of the silo device and mix and stir until uniformly obtained raw material mixture; The temperature was room temperature and the time was 8 minutes.

[0108] Secondary mixing step, put the raw material mixture into the hopper of the single-screw extruder through the transmission device, add 20 parts of diatomaceous earth, 15 parts of NPCC-701 modified nano-resin calcium carbonate, and 8 parts of JC-G530C to enhance The mixture is mixed and stirred and the semi-finished composite material is extruded through a single-screw machine; the temperature of the secondary mixing step is controlled at 42° C. to 53° C., and the time is 4 minutes.

[0109] Three mixing steps, introducing the semi-finished composite material into the hopper of a twin-screw extruder, adding 27 parts of LLDPE and 10 parts of EVA for mixing and...

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Abstract

The invention relates to a cold-resistant and high temperature-resistant composite material and a preparation method thereof. The composite material is prepared from the following raw materials in part by weight: 20 to 30 parts of polyethylene, 5 to 10 parts of polyvinyl butyral, 10 to 15 parts of SBS, 10 to 20 parts of diatomite, 5 to 10 parts of vinlacetate copolymer (EVA), 10 to 15 parts of acrylonitrile (ABS), 20 to 25 parts of SMN resin, 5 to 10 parts of JC-G530C reinforcing agent, 0.3 to 0.5 part of lignocellulose and the balance of nano calcium carbonate, wherein the nano calcium carbonate accounts for 15 to 25 percent of the total weight of the materials. The composite material overcomes the defects of poor low-temperature stability of bituminous pavements in monsoon climate regions of medium latitudes in China and poor high-temperature rutting resistance of the bituminous pavements at the same time. In addition, most of the raw materials of the composite material are recyclable and renewable materials, so that the composite material is energy-saving and environmentally-friendly. The composite material is very flexible and convenient in use and has very high economic and social benefits.

Description

technical field [0001] The invention relates to additives in the fields of roads, bridges and tunnels, and more specifically relates to a cold-resistant and high-temperature-resistant asphalt concrete additive and a preparation method, as well as products made from the additive. Background technique [0002] Since my country introduced the Austrian SBS modified asphalt technology in 2000, 99% of expressway construction has adopted this technology. Although this technical product fills the gap in my country's asphalt modification technology and improves the high-temperature anti-rutting and low-temperature stability of asphalt pavement; however, the technical performance indicators are not ideal, and can only achieve a failure strain of not less than 2500 at -10°C. The dynamic stability at a high temperature of 60°C is not less than 2800, and the average service life of the asphalt pavement is less than 5 years. These products cannot meet the complex regional climate characte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L29/14C08L53/02C08L55/02C08L25/08C08L67/02C08K3/34C08K3/26C04B26/26
Inventor 彭麒桦
Owner 深圳市天坤元环保科技有限公司
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