SBS modified asphalt and production method thereof

A technology of modified asphalt and production method, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems of easy aging of SBS modified asphalt and uneven dispersion of SBS modifier, and achieve the effect of improving stability

Inactive Publication Date: 2015-11-25
天津天合建岭路桥工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a kind of SBS modified asphalt and its production method, which solves the problems of uneven dispersion of SBS modifier and easy aging of SBS modified asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: A kind of SBS modified asphalt, made of the following raw materials in weight ratio: 40 parts of base asphalt, 1 part of rock asphalt, 2 parts of SBS modifier, and 1 part of stabilizer.

[0014] The SBS modifier is in powder form.

[0015] The stabilizer is a mixture of zinc oxide and petroleum resin, the weight ratio of which is zinc oxide: petroleum resin is 3:1.

[0016] The production method is as follows: mix the SBS modifier with a solvent at 140°C to obtain the SBS modifier mother liquor, and then initially blend the SBS modifier mother liquor with 60% of the base asphalt to obtain the primary The blended product is secondarily blended with the remaining base asphalt, stabilizer and rock asphalt to obtain SBS modified asphalt.

[0017] The solvent is petroleum distillate with high aromatic content and high boiling point, the boiling point is above 300° C., and the mass content of aromatic hydrocarbon is above 30%.

[0018] The initial blending uses a...

Embodiment 2

[0020] Example 2: A kind of SBS modified asphalt, made of the following raw materials in weight ratio: 90 parts of base asphalt, 40 parts of rock asphalt, 10 parts of SBS modifier, and 2 parts of stabilizer.

[0021] The SBS modifier is in powder form.

[0022] The stabilizer is a mixture of zinc oxide and petroleum resin, the weight ratio of which is zinc oxide: petroleum resin is 3:1.

[0023] The production method is as follows: mix the SBS modifier with a solvent at 165°C to obtain the SBS modifier mother liquor, and then firstly blend the SBS modifier mother liquor with 70% of the base asphalt to obtain the primary The blended product is secondarily blended with the remaining base asphalt, stabilizer, and rock asphalt, and the uniformly mixed mixture obtained is the SBS modified asphalt.

[0024] The solvent is petroleum distillate with high aromatic content and high boiling point, the boiling point is above 300° C., and the mass content of aromatic hydrocarbon is above ...

Embodiment 3

[0027] Embodiment 3: A kind of SBS modified asphalt, made of the following raw materials in weight ratio: 50 parts of base asphalt, 5 parts of rock asphalt, 4 parts of SBS modifier, and 1 part of stabilizer.

[0028] The SBS modifier is in powder form.

[0029] The stabilizer is a mixture of zinc oxide and petroleum resin, the weight ratio of which is zinc oxide: petroleum resin is 3:1.

[0030] The production method is as follows: mix the SBS modifier and solvent at 150°C to obtain the SBS modifier mother liquor, and then carry out the initial blending of the SBS modifier mother liquor and 65% of the base asphalt to obtain the primary The blended product is secondarily blended with the remaining base asphalt, stabilizer and rock asphalt to obtain SBS modified asphalt.

[0031] The solvent is petroleum distillate with high aromatic content and high boiling point, the boiling point is above 300° C., and the mass content of aromatic hydrocarbon is above 30%.

[0032] The initi...

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Abstract

SBS modified asphalt is prepared from, by weight, 40-90 parts of matrix asphalt, 1-40 parts of rock asphalt, 2-10 parts of SBS modifier and 1-2 parts of stabilizer. The SBS modifier is powdery, the stabilizer is a mixture of zinc oxide and petroleum resin, and the weight ratio of zinc oxide to petroleum resin is 3 to 1. The SBS modifier and a solvent are mixed at the temperature of 140 DEG C to 165 DEG C, SBS modifier mother liquor is obtained, then the SBS modifier mother liquor and the 60%-70% of matrix asphalt are blended for the first time, an obtained preliminary blending product and the remaining matrix asphalt, stabilizer and rock asphalt are blended for the second time, and the SBS modified asphalt is obtained.

Description

technical field [0001] The invention relates to a modified asphalt, in particular to a SBS modified asphalt and a production method thereof. Background technique [0002] SBS modified asphalt is a modified asphalt formed by blending SBS rubber modifier and base asphalt in a certain proportion. It has excellent high temperature resistance but poor anti-aging performance. The working environment of the road surface changes greatly, and the high temperature and low temperature in winter and summer make the working environment of the road surface extremely harsh. SBS is a synthetic rubber product. In the long-term harsh use environment, it is easily aged by the influence of the climate, thus affecting the stability of the road surface and the low-temperature cracking resistance. Moreover, the amount of SBS modifier added is small, generally about 10% of the base asphalt, so it is difficult to disperse evenly in the base asphalt, resulting in low quality of the final shaped asph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L57/02C08K3/22
Inventor 郑建岭苏怡然
Owner 天津天合建岭路桥工程科技有限公司
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