Activated quartz powder is based on ordinary crystalline quartz powder through a unique process to modify the surface of quartz powder particles with silane coupling agent and other materials, thereby changing the original physical properties of the surface and effectively improving the adhesion between resin and quartz powder. and interface hydrophobicity, thereby increasing the mechanical strength, elastic modulus, thermal aging performance, weather resistance of the cured product, and more importantly, it can greatly improve the occurrence of local free discharge in high-voltage electromechanical products.
Activated quartz powder can react and crosslink with resin and curing agent, but it will not promote or retard the curing reaction of resin and curing agent system, nor will it affect the casting process. Active quartz powder is widely used in the casting of medium and high voltage electrical appliances, packaging of electronic materials and other industries.
The main uses of silane coupling agent after adding quartz powder: rubber, plastic functional filler; artificial stone main material; building structural adhesive filler; epoxy resin casting filler; electrical insulating filler, etc.
Activated quartz powder is a non-toxic, odorless, non-polluting hydrophobic (lipophilic) high-purity white micropowder with good temperature resistance, acid and alkali corrosion resistance, poor thermal conductivity, high insulation, low expansion, stable chemical properties, hardness Large and other excellent performance. When used in polyolefin plastics, it will not reduce the MFR value, has good affinity, and does not absorb water, so that ordinary plastic products can obtain better impact strength, stiffness, and improve physical properties such as cold and heat resistance.
Modified quartz powder performance characteristics
1. Make the old material reach the impact strength of the new material, and the new material to reach the impact strength of the special engineering material;
2. Toughening, increasing rigidity, reducing freezing point temperature and increasing heat distortion temperature by 10-15℃;
3. Greatly reduce the cost of raw materials;
4. In particular, the impact strength of polyolefin plastics at low temperature can reach or even exceed the impact strength of pure polyolefin plastics at room temperature, so as to prevent the product from breaking losses due to transportation, loading and unloading collisions and accidental drops at low temperatures;
5. Extend the service life of the product.