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Modified asphalt master batch and preparing method and application thereof

A modified asphalt and masterbatch technology, which is applied in the field of its preparation and modified asphalt masterbatch, can solve the problems of reducing the performance of SBS modified asphalt, complex production process, uneven quality, etc., and achieve good asphalt compatibility, The production process is simple and the quality is stable

Active Publication Date: 2015-12-16
SUZHOU TOPOLINE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the low technical threshold, there are more and more manufacturers producing SBS modified asphalt, and its quality is uneven, and many construction units even produce it themselves; in addition, SBS modification needs to add at least 4.5% to achieve good performance. Considering the cost factor, some low-cost additives are usually added during use. The actual amount of SBS in asphalt is less and less, and the high cost limits its application; further, SBS modified asphalt The production process of SBS is complex, and it needs to go through multiple processes such as grinding, swelling, development, high-temperature storage, high-temperature transportation, etc., and the entire production cycle is long; in addition, the compatibility between SBS and asphalt is limited, and SBS modified asphalt is only a temporary stable system. If the high temperature storage time is too long, segregation will occur and the performance of SBS modified asphalt will be reduced
[0004] Therefore, although the effect of SBS modified asphalt is good, and various detection indicators can meet the requirements of the specification, its quality in actual use is still questioned by the industry

Method used

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  • Modified asphalt master batch and preparing method and application thereof
  • Modified asphalt master batch and preparing method and application thereof

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preparation example Construction

[0031] The method for preparing the above-mentioned modified asphalt masterbatch of the present application comprises adding 40-60 parts of EVA, 5-15 parts of polyethylene, 3-5 parts of stearic acid and 5-10 parts of organic compounds by weight in a high-speed mixer. Wax to form evenly mixed fine particles; add 10-20 parts of aromatic hydrocarbon extraction oil and 2-5 parts of plasticizer, mix evenly, so that a layer of liquid film is attached to the surface of the particles; add 5-10 parts of rubber powder, 2-4 parts of Nanoparticles and 0.1-0.5 parts of antioxidant are mixed evenly, so that the powder is attached to the surface of the particles as much as possible, and the sum of the weight percentages of the above components is 100%; Pellet through a pelletizer.

[0032] For the application of the modified asphalt masterbatch of the present application, by weight percentage, 90-99 parts of base asphalt are heated to 170°C-180°C, 1-10 parts of the above-mentioned modified a...

Embodiment 1

[0036]In the high-speed mixer, firstly add 50 parts of EVA, 10 parts of polyethylene, 10 parts of PE wax and 3 parts of stearic acid according to the weight ratio and mix well. In this embodiment, the content of VA in EVA is 20%, and the poly Ethylene is low-density polyethylene, and then 15 parts of furfural extraction oil and 2 parts of epoxidized soybean oil are added to mix evenly, so that a layer of liquid film is attached to the surface of the particles, and then 7 parts of 50-mesh waste tire rubber powder and 2.5 parts of nano calcium carbonate are added. , 0.5 parts of antioxidant 1010 mixed evenly, so that the powder adheres to the particle surface as much as possible. Finally, the uniformly mixed material is extruded and granulated through a double screw rod, and then diced by a granulator to obtain the modified asphalt masterbatch.

[0037] In the specific application of this embodiment, 5 parts of modified asphalt masterbatch and 95 parts of base asphalt are respec...

Embodiment 2

[0048] In the high-speed mixer, firstly add 60 parts of EVA, 10 parts of polyethylene, 5 parts of 70 parts by weight # Microcrystalline wax and 4 parts of stearic acid are mixed evenly. In this embodiment, the content of VA in EVA is 14%, and polyethylene is low-density polyethylene, and then 10 parts of rubber extraction oil and 3.5 parts of epoxy soybean oil are added to mix. uniform, so that a layer of liquid film is attached to the surface of the particles, and then 5 parts of 40 mesh waste tire rubber powder, 2 parts of nano-titanium dioxide, and 0.5 part of antioxidant 1076 are added and mixed evenly, so that the powder adheres to the surface of the particles as much as possible. Finally, the uniformly mixed material is extruded and granulated through a double screw rod, and then diced by a granulator to obtain the modified asphalt masterbatch.

[0049] In the specific application of this embodiment, 5 parts of modified asphalt masterbatch and 95 parts of base asphalt ar...

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Abstract

The invention relates to the technical field of modified asphalt and particularly provides a modified asphalt master batch. The modified asphalt master batch is prepared from, by weight, 40-60 parts of EVA, 10-20 parts of extract oil of aromatic hydrocarbon, 5-10 parts of rubber powder, 5-10 parts of organic wax, 5-15 parts of polyethylene, 3-5 parts of stearic acid, 2-5 parts of plasticizer, 2-4 parts of nano-particle and 0.1-0.5 part of antioxidant. The invention further provides a preparing method and application of the modified asphalt master batch. According to the modified asphalt master batch, asphalt is modified by organically combining the EVA, the rubber powder, the organic wax, the nano-particles and other raw materials, the high-low temperature performance and stability of the asphalt can be remarkably improved, separation of the asphalt in the use process can be effectively relieved through the good compatibility with the asphalt, and the good modified effect is achieved; the production process is simple, use is convenient, and quick and large-scale production of modification of the asphalt can be achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of modified asphalt, in particular to a modified asphalt master batch, a preparation method and application thereof. 【Background technique】 [0002] Asphalt pavement is a semi-rigid pavement with the characteristics of shock absorption, comfort and easy maintenance. It is currently the preferred pavement form for roads. With the increase of traffic volume, traffic load, traffic speed, and the gradual increase of extreme weather, such as extreme cold and extreme heat, people have put forward more stringent requirements for road paving asphalt materials. However, the existing ordinary asphalt is easy to crack at low temperature, and is easy to soften and cause rutting at high temperature, which can no longer meet the actual needs of the road. [0003] Various modified asphalt technologies have emerged. Among them, SBS (Styreneic Block Copolymers, styrene-butadiene-styrene triblock copolymer) modified asphal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L91/00C08L21/00C08K13/02C08K3/22C08K3/26C08K5/09C08K5/134C08J3/22
CPCC08J3/226C08J2395/00C08J2423/08C08K2201/011C08K2201/014C08L23/0853C08L95/00C08L2205/02C08L2205/025C08L2205/035C08L2207/066C08L2555/50C08L2555/60C08L2555/86C08L23/06C08L91/00C08L21/00C08K2003/265C08K5/09C08K5/1345C08L91/06C08K2003/2241C08L23/12C08K2003/2296C08K5/13
Inventor 牛艳辉陈悬
Owner SUZHOU TOPOLINE TECH
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