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Nano-zinc oxide-filled diatomite-rubber powder composite modified aging-resistant asphalt and preparation method thereof

A technology of nano-zinc oxide and compound modification, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of resource waste, environmental pollution, etc., achieve good compatibility, improve light and oxygen aging resistance, and improve heat resistance Effect of Oxygen Aging Properties

Inactive Publication Date: 2018-05-29
ANHUI HONGSHI OPTOELECTRONICS HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improper handling will cause environmental pollution and waste of resources

Method used

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Examples

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Comparison scheme
Effect test

Embodiment

[0018] A preparation method for aging-resistant asphalt modified by diatomite-rubber powder composite modification filled with nano-zinc oxide, characterized in that, the following steps are carried out:

[0019] a. Calcinate 4kg of diatomite at 500-600°C for 1 hour, mechanically grind and pulverize it, pass through a 200-mesh sieve, and dry it in an oven at 130-140°C for 1 hour;

[0020] b. Surface modification of waste rubber powder:

[0021] Mechanically pulverize 8 kg of waste tires and pass through a 60-mesh sieve to obtain waste rubber powder;

[0022] Add distilled water to ethanol to make a solution with an alcohol content of 90%, add acetic acid to adjust the pH to 4-6, add 0.5kg of silane coupling agent under stirring, hydrolyze for 10 minutes, spray it evenly on the surface of rubber powder, and mix thoroughly; Treat under 600-700W microwave for 10 minutes, soak in sodium hydroxide solution, heat up to 50-60°C and stir for 30 minutes; then dry in an oven at 80-90°C...

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PUM

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Abstract

The invention discloses nano-zinc oxide-filled diatomite-rubber powder composite modified aging-resistant asphalt which is characterized in that a preparation method comprises the following steps: calcining diatomite at a high temperature, mechanically grinding and crushing, sieving and then drying; mechanically crushing and sieving a waste tire to obtain a waste rubber powder; adding a silane coupling agent in an alcoholic solution, hydrolyzing, uniformly spraying on the surface of the rubber powder and fully mixing; after microwave treatment, soaking with a sodium hydroxide solution and thendrying in a drying box to obtain the modified rubber powder; dissolving graphene oxide in dimethyl formamide to obtain a liquid A; dissolving nano-zinc oxide in dimethyl formamide to obtain a liquidB; mixing the liquids A and B and organic vermiculite and performing magnetic stirring and water-bath heating to obtain a compound aging-resistant modifier; heating petroleum asphalt to a flow state,adding the materials obtained previously, uniformly stirring, placing in an oil bath pan for heat preservation, cutting and swelling to obtain the aging-resistant asphalt.

Description

technical field [0001] The invention relates to the field of asphalt, in particular to a method for preparing aging-resistant asphalt compound-modified by diatomite-rubber powder filled with nanometer zinc oxide. Background technique [0002] With the continuous development of my country's transportation industry, the use of automobiles continues to increase, followed by the problem of disposal of waste tires. Improper handling will cause environmental pollution and waste of resources. In recent years, waste tire rubber powder has been more and more widely used in practical projects as a green ecological road material. The addition of waste tire rubber powder can significantly improve the road performance of asphalt mixture. Diatomite is a natural inorganic mineral material, and its unique microporous structure also has the function of improving the performance of asphalt roads. Contents of the invention [0003] The main technical problem to be solved by the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08K13/04C08K7/26C08K3/04C08K3/22C08K3/34C08K7/00
CPCC08K2003/2296C08K2201/011C08L95/00C08L2201/08C08L19/003C08K13/04C08K7/26C08K3/04C08K3/22C08K3/346C08K7/00
Inventor 徐道际张建波张成文邓书醒肖杰
Owner ANHUI HONGSHI OPTOELECTRONICS HIGH TECH CO LTD
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