General
SBS modified asphalt is a system composed of high polymer SBS modifier as the dispersed phase, which is uniformly dispersed into the continuous phase of asphalt by physical method with a certain particle size. Because only partial adsorption and compatibility exist between polymer and asphalt, but not complete melting. This kind of system belongs to the thermodynamic instability system, the separation between two phases is easy to occur, thus causing the segregation phenomenon. The actual production and experiments show that: in the production and transportation of modified asphalt, once the external force stops acting, SBS will be separated from the asphalt and float on the surface to condense, forming the rough skin of larger particles (star SBS is more serious). The fundamental reason is the compatibility of the base asphalt and SBS, if the compatibility is not good or not fully compatible, then the base asphalt separation from SBS will occur, which will seriously affect the quality and technical indexes of modified asphalt.
To solve the above problems, we need to use the modified asphalt stabilizer. ZX-BP-04 SBS modified asphalt stabilizer has been applied in many domestic modified asphalt production and processing enterprises. Its compatibility and heat storage stability are good, and it can also expand the procurement scope of raw material asphalt of processing enterprises.
Composition
SBS modified asphalt stabilizer is a mixture made by sulfocompound, benzene rubber-type compounds, inorganic salt crosslinking modification agent and modified resin extension agent, etc.
Product properties
|
Items |
Technical Specification |
|
Visual Appearance |
Gray or light yellow solid fine powder |
|
Effective Ingredient content |
≥99.0% |
|
Appearent Density(25℃) |
＞0.9 |
|
Flash point (℃) |
≥230 |
|
Fineness (80 mesh sieve residue) |
≤1% |
|
Dosing amount |
1.5~2.5% |
|
Water |
≤0.5% |
Application
Application of modified asphalt stabilizer
(1)ZX-BP-04 modified asphalt stabilizer can improve the thermal storage stability of SBS modified asphalt and prevent the occurrence of segregation. My company together with University experts committed to the research and development of modified asphalt production technology, the synthetic process and distribution of technology to develop efficient modified asphalt stabilizing agent (YNWDJ - type 1, YNWDJ - type 2), stabilizing agent under the condition of certain heat generate reactive group, and the SBS polymer molecular chain, such as asphalt reactive cross connection branch, makes the SBS and asphalt form stable colloidal system, so as to improve the thermal stability of modified asphalt, SBS modified asphalt storage segregation problem, the storage stability of SBS modified asphalt products can reach more than 60 days.
(2)ZX-BP-04 modified asphalt stabilizer can reduce the amount of SBS and improve the comprehensive index of modified asphalt. After the addition of stabilizer, a stable interfacial adsorption layer is formed between the polymer phase in the modified asphalt and the base asphalt phase, which reduces the surface tension of the interface and increases the affinity between the two phases, thus promoting the compatibility between the two phases. Improve the use efficiency of SBS, reduce the amount of SBS, significantly improve the softening point of modified asphalt, the product has good high temperature performance and low temperature performance. Safe and environmental protection typeThis product is stable at room temperature, non-toxic, no peculiar smell, high flash point, non-flammable products, suitable for the production and application of various SBS modified asphalt.
(3)ZX-BP-04 modified asphalt stabilizer can increase the content of aromatic content and improve the compatibility of matrix asphalt and SBS. Because the addition of modified asphalt stabilizer can increase the aromatic content, so that SBS can be well compatible in the base asphalt. For some domestic and foreign asphalt that is not easy to be modified, it can also be normally processed and produced through language and phase customer stabilizer, which is conducive to the procurement and use of raw materials of modified asphalt production enterprises.
Usage and methods
1.Adding temperature: 170-175℃
2. Adding method: matrix asphalt is heated to about 170-175 degrees, SBS is added to shear for 40 minutes, and then stir and develop; Stabilizer was added after 2 hours of development and continued for 40-60 minutes.
Suggestions: According to the reactivity difference of different SBS and different matrix bitumen, the best scheme should be determined by experiment.
Package and storage
25 kg paper-plastic bag packaging or other method as customers' request.
Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat source: keep sealed: avoid mixed storage: use explosion-proof lighting and ventilation facilities: the storage area should be equipped with leakage emergency treatment equipment and appropriate receiving materials.
Safety and handling
Keep away from the fire, and keep the temperature of the device and container below 195 degrees Celsius (preferably within 190 degrees Celsius). Smoking is strictly prohibited in the workplace. Use the explosion-proof ventilation system and equipment. When adding, attention should be paid to the flow rate, not too fast (preferably use the automatic feeding system), to prevent static electricity accumulation
When handling, light loading and unloading, to prevent damage to packaging and containers. Equipped with the corresponding varieties and quantities of fire-fighting equipment.
Operators must undergo special training, strictly abide by the operating procedures, and must wear work clothes.
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