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Road-surface asphalt modified additive at normal temperature and its production

A technology of additives and asphalt, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of complex composition and production process, high production cost, and affecting usability, so as to improve high temperature stability and low temperature crack resistance, The construction is convenient and fast, and the effect of prolonging the service life

Active Publication Date: 2007-11-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production of cold patched asphalt binder requires multiple synthesis steps to complete, its composition and production process are relatively complicated, and the production cost is relatively high
Moreover, the cold patch mixture is easy to agglomerate during storage, which affects the usability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、2、3

[0034] Embodiment 1,2,3 preparation method is as follows (each raw material weight ratio is as described in Table 1):

[0035] 1) A certain weight portion of high molecular polymer SBS (molecular weight is about 200,000), aromatic rubber filler oil KA8012 (aromatic content ≥ 80%, kinematic viscosity 10-14mm 2 / s), C 9 Petroleum resin (softening point about 110°C), plasticizer is dioctyl phthalate, cross-linking agent is elemental sulfur, and stirred and reacted at 105°C for 1.0 hour.

[0036] ingredients

Implementation 1

Implementation 2

Implementation 3

Implementation 4

Implement 5

Implementation 6

Implementation 7

Polymer

Material

thickening

resin

filler oil

light distillate

Divide the oil

flame retardant

plasticizer

crosslinking agent

Anti-stripping agent

Antiaging agent

SBS

SBR

C9 petroleum resin

Rosin modified tree

Aromatic filling

...

Embodiment 4

[0039] Embodiment 4 preparation method is as follows:

[0040] The additive and modified asphalt were prepared with reference to Example 1, except that the tackifying resin was a rosin-modified resin (softening point about 85° C.).

Embodiment 5

[0041] Embodiment 5 preparation method is as follows:

[0042] Prepare additives and modified asphalt with reference to Example 1, the difference is that the thermoplastic elastomer SBS and styrene-butadiene rubber SBR are used as composite materials, and the light distillate oil is mixed oil of gasoline and kerosene.

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PUM

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Abstract

A road surface asphalt modified additive at normal temperature and its production are disclosed. It consists of high-molecular polymer 5-15 proportion, filling oil 20-40 proportion, light distillates 35-70 proportion, viscosity-increasing resin 3-12 proportion, fire-retardant agent 1-3 proportion, and cross-linking agent 0.1-0.5 proportion. The process is carried out by dissolving asphalt, modifying asphalt and blending with stone material at normal temperature. It's safe, has better stability, weather and temperature resistances.

Description

technical field [0001] The invention relates to an additive for modifying pavement asphalt at normal temperature and a preparation method thereof, which is suitable for pavement asphalt materials mixed and constructed at normal temperature. Background technique [0002] Traditional pavement asphalt modification mostly adopts thermal processing technology, that is, polymer modifiers and additives are put into heated and melted hot asphalt to modify the asphalt at a higher temperature, and the modified asphalt products are sent to storage tanks for heat preservation. The production of modified asphalt by this process is suitable for large-scale mass production, centralized location, and large-scale road paving and maintenance construction. In the process of using the road surface, in order to ensure the smooth flow of road traffic, it is often necessary to timely repair the damage such as potholes, looseness, cracks and peeling of the road surface. It is very inconvenient to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/06C08K5/521
Inventor 陈杰
Owner CHINA PETROLEUM & CHEM CORP
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