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A kind of bio-based asphalt modifier and preparation method thereof

An asphalt modifier, bio-based technology, applied in building structures, building components, building insulation materials, etc., to achieve the effects of wide sources, wide range of raw materials, and improved modulus

Active Publication Date: 2021-06-08
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a bio-based asphalt modifier and its preparation method, which overcomes the shortcomings and deficiencies of existing asphalt modifiers

Method used

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  • A kind of bio-based asphalt modifier and preparation method thereof
  • A kind of bio-based asphalt modifier and preparation method thereof
  • A kind of bio-based asphalt modifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The raw materials used in the bio-based asphalt modifier are as follows: 70wt% of biomass-based matrix material, 15wt% of olefin-based rigid polyester modifier, 1wt% of auxiliary agent, 12wt% of interface enhancer, and 2wt% of nano inorganic filler.

[0030] Wherein, include coupling agent and initiator in the auxiliary agent, coupling agent is made up of silane coupling agent and titanate coupling agent, and its mass ratio is 1:1; Initiator is benzoyl peroxide tert-butyl ester initiation agent, the mass ratio of silane coupling agent, titanate coupling agent and benzoyl tert-butyl peroxide initiator is 1:1:1; the interface enhancer is a carbon nanotube interface enhancer with a mesh number of 3nm; The inorganic filler can be nanometer zinc oxide with a mesh number of 15nm.

[0031] The preparation method of the bio-based asphalt modifier is as follows: ①Weigh the biomass-based matrix material according to the above ratio, add the polyester modifier and additives in seque...

Embodiment 2

[0054] The raw materials used in the bio-based asphalt modifier are as follows: 65wt% of biomass-based matrix material, 18wt% of polyester modifier, 1wt% of auxiliary agent, 14wt% of interface enhancer, and 2wt% of nano inorganic filler.

[0055] The specific composition and parameters of each component are consistent with Example 1, and the preparation method, preparation process and performance test are consistent with Example 1.

Embodiment 3

[0057] Bio-based asphalt modifier components are consistent with Example 2. The polyester modifier is an olefin-based rigid polyester modifier. Among them, the auxiliary agent includes a coupling agent and an initiator, the coupling agent is composed of a silane coupling agent and a titanate coupling agent, and its mass ratio is 1:1; the initiator is a methyl ethyl ketone peroxide initiator; the interface enhancer It is nano-graphene with an average particle size of 3nm and a height of 0.7nm; the nano-inorganic filler can be nano-calcium carbonate with a mesh size of 30nm.

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Abstract

The invention provides a bio-based asphalt modifier and a preparation method thereof. The bio-based asphalt modifier includes the following components in terms of mass percentage: 60wt%-80wt% of biomass-based base materials, 10wt%-20wt% of polyester modifiers, 0.5wt%-2wt% of additives, and interface enhancers 10wt% to 15wt%, nano inorganic filler 2wt% to 10wt%. A new type of biomass-based organic-inorganic composite high modulus additive was prepared by a simple one-step high-temperature melt blending modification. The novel biomass-based high-modulus additive proposed by the present invention has outstanding advantages such as excellent performance, low cost, and good compatibility with asphalt, and a series of products can be developed according to different engineering needs; the high-modulus asphalt has complex shear It has outstanding advantages such as high modulus, large anti-rutting factor, good anti-fatigue performance, and strong elastic recovery ability.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to a bio-based asphalt modifier and a preparation method thereof. Background technique [0002] With the development of my country's national economy, the traffic volume has increased rapidly, and the mileage of my country's highways has reached the first place in the world. Because asphalt pavement has the characteristics of good driving comfort, fast construction speed, and convenient maintenance, it is more and more widely used in pavement structures. At the same time, heavy and overloaded road traffic is becoming more and more common. In addition, the frequency of extreme and continuous high-temperature climates in many places is increasing, and the rutting disease of asphalt pavement is becoming more and more serious. It has become the first of several major diseases, directly affecting driving comfort and performance. safety. According to incomplete statistics, amon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/00C08L67/00C08L95/00C08K3/22C08K3/26
CPCC08K2003/2296C08K2003/265C08K2201/011C08L91/00C08L95/00C08L2201/08C08L2205/03C08L67/00C08K3/22C08K3/26
Inventor 任瑞波赵品晖孟伟坤徐强耿立涛王立志周浩李志刚
Owner SHANDONG JIANZHU UNIV
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