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Scratch Resistance Agent also called Anti-Scratch Agent, it is PP as the carrier, made of ultra-high molecular weight polysiloxane. It is widely used in automotive PP interior parts, household appliances PP modified plastics and other field, which is not tackiness, not odor, not exudation, and has low VOC and less influence of stress whitening. It has excellent long-lasting scratch resistance and excellent thermal stability. It can improve the final products’s surface gloss and smoothness. It can also be used as a plastic processing agent to improve the flow ability and demolding, decrease the torque, the equipment wear and decrease the die build up.
It is suitable for directly injection molding, extrusion and blown film after mixing with the plastic particles.
As a Silicone Additives, it has following product feature:
1) Significantly improve scratch resistance even after aging
2) Good stability and non-mobility,
3) Promote the dispersion of the fillers
4) Significant decrease of friction coefficient, improve the surface smoothness
5) Decrease the torque and the die build up
6) Low VOC, no odor, no exudation, low stress whitening influence
7 )Impart the processing performance and final products appearance
As a Plastic Additives, our silicone product DX519A Scratch Resistance is one of the top high quality Silicone Additives in China. Our clients test our samples in their labs, and from their testing data, it shows our products has the best scratch resistance property compared to other Chinese Silicone Production factories, which is only a little bit difference compared to USA Dow’s similar products. With 2% dosage of our products, the ΔL value can rapidly reduce to 0.4.
As the top one scratch resistance performance parameter in China, the general character of DX519A is as follows:
| Appearance | Melting Point | MFI g/10min | Density g/cm³ | Recommend Dosage(W/W) | Moisture % （5min；90℃） | Hardness Injection Board |
| White Pellet | 170-190 | 10-12 | 0.86-0.90 | 0.5-2% | <=0.2 | 97±2 |
| Test Name | Test Method | Unit | STD.Value | DX519A |
| Hardness | DS-342 A | Asker C | 63±3 | 62 |
| Compression Set | DS-309 B | ％ | Max 60 | 56 |
| Elongation at Break | DS 306 C | ％ | Min 200 | 525 |
| Tear Strength | DS 307 A | KN/m | Min 3 | 3.65 |
| Split Tear | DS 308 B | N/mm | Min 2.7 | 3.64 |
Anti-Scratch Masterbatch were designed with super scratch resistance property to compete with imported products, like USA Dow, Germany Wacker, Japan Shin-Etsu and so on.
As a Scratch Resistance Agent for Automotive PP interior parts, like pillar trim, center console, dashboard and instrument panels, bumper and other side grill, our products has more supper advantage compare to other products, you can check following testing data to know our DX519A.
| Test Name | DX519A | Imported Anti-Scratch | Silicone Anti-Scratch |
| Cross Scratch ∆L(10N) | 0.35 | 1.38 | 2.55 |
| Cross Scratch ∆L(10N) (102°C,168h) | 0.43 | 0.99 | 1.94 |
| Stress Whitening ∆L | 0.2 | 1.04 | 1.46 |
| Tensile Strength(MPa) | 22.78 | 21.68 | 22.07 |
| Flexural Strength(MPa) | 29.69 | 29.32 | 29.68 |
| Breaking Elongation(％) | 63.98 | 69.25 | 64.06 |
| Notch Impact Strength (23°C,kj/m2) | 27.66 | 26.55 | 27.61 |
| Surface Migration | No | No | No |
| Surface Migration (Thermal Ageing 168h) | No | No | No |
Automotive industry develop very fast these ten years, and it requests us to research and develop the new products to meet the new requirments. Except the Scratch Resistance, we also focus on the quality of in-vehicle air. PP has obviously low scratch resistance which is the critical performance for auto-parts such as dashboard, center console and door trim. Furthermore, the own characteristics of general scratch resistant agent easily results the over high content of VOC in PP, thus can not meet the requirements on odor and atomization property for auto interior. The previous amide lubricant with low molecular not only leads problems such as stickiness and blooming when they migrate to the material surface, but will also affect odor and emission characteristics of material, leading high content of VOC, which become the “hidden killer” to the heath of drivers and passengers by seriously polluting the air in vehicle interior. Therefore, it is getting the main research direction and target for plastics and automobile industry that how to solve the problems of odor dispersion and scratch resistance of PP at the same time.
