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Rubber alloy asphalt modifier with high storage stability and preparation method thereof

A technology of storage stability and asphalt modifier, which is applied in building components, building insulation materials, construction, etc., and can solve problems such as difficult processing, transportation, poor compatibility and adhesion, and insufficient storage stability of rubber asphalt. Achieve the effect of not easy segregation, uniform swelling, and performance improvement in all aspects

Inactive Publication Date: 2019-10-29
CHINA FIRST HIGHWAY ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, in order to solve the problems of insufficient storage stability of rubber asphalt, poor compatibility and adhesion, difficulty in processing, transportation and on-site mixing process, the present invention provides a high-grade asphalt with simple operation, low cost and easy storage. Storage Stability Rubber Plastic Alloy Asphalt Modifier

Method used

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  • Rubber alloy asphalt modifier with high storage stability and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0038] A rubber-plastic alloy asphalt modifier with high storage stability, comprising the following components in parts by mass: 65 parts of rubber powder, 5 parts of waste plastics, 0.05 parts of glucuronic acid, 10 parts of polydimethylsiloxane, poly Ether epoxy resin 10%, graphene powder 0.005 part.

[0039] Prepared by the following method:

[0040] Remove metal, fiber and sundries from waste rubber, and then crush it into 30-mesh flocculent rubber powder with a density of 1.0-1.3kg / m3, impurity content less than 1%, metal content less than 0.5%;

[0041] (2) Activate desulfurization and regenerate the flocculent rubber powder obtained in step (1) by microwave radiation, the microwave radiation frequency is 900-1000MHz, the microwave power is 75kW, and the time is 1min;

[0042] (3) After fully mixing the above components, put them in an oven at 140°C for curing for 1 hour, then pour the modifier into the twin-screw extruder at a constant speed, the extrusion temperature...

Embodiment 2

[0046] A rubber-plastic alloy asphalt modifier with high storage stability, comprising the following components in parts by mass: 65 parts of rubber powder, 6 parts of polyethylene waste plastics, 0.075 parts of glucuronic acid, and 17.5 parts of polydimethylsiloxane part, 9 parts of polyether epoxy resin, and 0.000075 part of graphene powder.

[0047] Prepared by the following method:

[0048] (1) Remove metal, fiber and sundries from waste rubber, and then crush it into flocculent rubber powder with 25 mesh small particles, with a density of 1.0-1.3kg / m 3 , impurity content is less than 1%, metal content is less than 0.5%;

[0049] (2) Activate desulfurization and regenerate the flocculent rubber powder obtained in step (1) by microwave radiation, the microwave radiation frequency is 900-1000MHz, the microwave power is 80kW, and the time is 2min;

[0050] (3) After fully mixing the additives, pour the modifier into the twin-screw extruder at a constant speed, the extrusion...

Embodiment 3

[0054] A rubber-plastic alloy asphalt modifier with high storage stability, comprising the following components in parts by mass: 70 parts of rubber powder, 7 parts of polyethylene waste plastics, 0.1 part of glucuronic acid, and 20 parts of polydimethylsiloxane part, 10 parts of polyether epoxy resin, and 0.01 part of graphene powder. Prepared by the following method:

[0055] (1) Remove metal, fiber and sundries from the waste rubber, then crush it into flocculent rubber powder with 40 mesh small particles, the density is 1.0-1.3kg / m3, the impurity content is less than 1%, and the metal content is less than 0.5%;

[0056] (2) Activate desulfurization and regenerate the flocculent rubber powder obtained in step (1) by microwave radiation, the microwave radiation frequency is 900-1000MHz, the microwave power is 85kW, and the time is 3min;

[0057] (3) After fully mixing the additives, put them in an oven at 140°C for curing for 1 hour, then pour the modifier into a twin-screw...

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Abstract

The invention discloses a rubber alloy asphalt modifier with high storage stability. The rubber alloy asphalt modifier is prepared from the following components in parts by weight: 60-70 parts of rubber powder, 5-7 parts of waste plastic, 0.05-0.1 part of glucuronic acid, 15-20 parts of polydimethylsiloxane, 8-10 parts of polyether epoxy resin and 0.00005-0.01 part of graphene powder. Preparationcomprises the steps: (1) waste rubber is crushed into small-particle flocculent rubber powder; (2) the flocculent rubber powder obtained in the step (1) is activated and desulfurized to be regeneratedthrough microwave radiation, and activated rubber powder is obtained; (3) the components are fully mixed, dried, extruded and granulated, and the granular asphalt modifier is obtained; and (4) matrixasphalt is heated, after the modifier is added, the temperature is increased, high-speed shearing and drying are conducted, and then modified asphalt is obtained. According to the prepared modifier,the high-and-low temperature performance of the matrix asphalt can be effectively improved, the storage stability is improved, the adhesiveness between the asphalt and aggregate is increased, storageis easy, the blending, transporting and storage costs are effectively saved, and the production cost is greatly lowered.

Description

technical field [0001] The invention relates to the technical field of asphalt modification, in particular to a rubber-plastic alloy asphalt modifier with high storage stability and a preparation method thereof. Background technique [0002] The black pollution caused by waste automobile tires is a concern of the whole society. The application of rubber asphalt and waste tire rubber powder asphalt mixture in road construction is in the ascendant. The temperature performance and elastic recovery have been significantly improved. The use of waste tire rubber powder in modified asphalt not only improves the performance of asphalt and improves economic benefits, but also solves the increasing problem of black pollution. Therefore, rubber asphalt and rubber particle modified asphalt It has become an internationally recognized best way for waste tire disposal, harmless disposal and resource utilization. [0003] The disadvantage is that the asphalt modified by waste tire rubber p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L23/06C08L83/04C08L63/00C08K3/04C08K5/1545
CPCC08L95/00C08L2201/08C08L2205/035C08L2207/20C08L2207/24C08L19/003C08L23/06C08L83/04C08L63/00C08K3/042C08K5/1545
Inventor 贺晓宇万朋均屈小飞尧棋刘斌彭嫘
Owner CHINA FIRST HIGHWAY ENG
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