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Stabilizers

Stabilizers

 

 

Purposes:
(1)   Improve thermal storage stability of SBS modified asphalt and prevent segregation.
We are committed to research and development of techniques of production of modified asphalt and have developed an efficient modified asphalt stabilizer by means of synthetic process and complex technology. Its reaction mechanism: Under certain thermal conditions, this stabilizer produces active free radicals which cross link and graft with polymer (e.g. SBS) molecule chains and active functional groups in asphalt to allow polymers and asphalt to form a stable colloidal system so that the thermal stability of modified asphalt is improved, the storage segregation problem of modified asphalt is resolved, and the storage stability of modified asphalt products can be maintained for more than 90 days.
(2)   The use of this product renders reduction in addition amount of SBS and improvement in composite indicator of modified asphalt.
After the stabilizer is added, a stable interphase absorption layer will form between polymer phase and base asphalt phase in modified asphalt so that interphase surface tension is reduced, affinity between the two phases are increased, and thus compatibility between the two phases is accelerated. The use of this stabilizer increases utilization efficiency and reduces addition amount of SBS, significantly increases softening point of modified asphalt, and gives products good high-temperature and low-temperature properties.
(3)   Achieve good safety and environmental protection
This product is stable, non-toxic and odorless at normal temperature. With a high flash point, it is nonflammable. It applies to urban road engineering as well as express highways.
 
Product indicators:
 
Indicator
LZ-STAB-05
LZ-STAB-04
Quality indicators
Appearance
Gray solid fine powder
Yellowish solid fine powder
Content of active ingredients (%)
≥95.0
≥95.0
Apparent density (g/cm3)
0.6-0.8
0.5-0.7
Melting point ()
50
110
Fineness (80-mesh residue on sieve) (%)
≤2
≤2
Moisture (%)
≤0.5
≤0.5
Amount and usage
Addition amount
1-3‰
1-3‰
Addition temperature ()
170-173
170-173
Addition method
Add it and polymers into base asphalt at the same time and put them through the mill together.
After SBS is dissolved, add it uniformly and stir until complete reaction is achieved.
Scope of application
It applies to production of finished polymer modified asphalt and is well-suited to SBS thermoplastic elastomeric (TPE), SBR modified asphalt. Less heat released during reaction, no volatiles produced insoluble in water, stable at normal temperature, non-toxic and odorless, safe to operate.

SHAN DONG ASPHALT AND EQUIPMENT CO.,LTD.
ADD:The wind road in Ji'nan city in Shandong province hi tech Development Zone, No. 322 of world No. 1 building room 511
E-mail:496873101@qq.com
E-mail:info@jinanzhongjiao.com