Activated quartz powder is a unique process of modifying the surface of quartz powder particles using silane coupling agents and other materials on the basis of ordinary crystalline quartz powder, thereby changing the original physical properties of the surface, effectively improving the adhesion and interfacial hydrophobicity between resin and quartz powder, thereby increasing the mechanical strength, elastic modulus, thermal aging performance, weather resistance of the cured product, and more importantly, greatly improving 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 does not promote or hinder the curing reaction of the resin and curing agent system, nor does it affect the casting processability. Activated quartz powder is widely used in industries such as casting of medium and high voltage electrical appliances and packaging of electronic materials.
The main use of silane coupling agent added to quartz powder is as a functional filler for rubber and plastic; Artificial stone as the main material; Building structural adhesive filler; Epoxy resin casting filler; Electrical insulation fillers, etc.
Activated quartz powder is a non-toxic, odorless, and pollution-free hydrophobic (oleophilic) high-purity white micro powder, which has excellent properties such as good temperature resistance, acid and alkali corrosion resistance, poor thermal conductivity, high insulation, low expansion, stable chemical properties, and high hardness. When used in polyolefin plastics, it does not reduce the MFR value, has good affinity, does not absorb water, and can provide ordinary plastic products with good impact strength, stiffness, and improved physical properties such as cold and heat resistance.
Performance characteristics of modified quartz powder:
1. Make old materials reach the impact strength of new materials, and new materials reach the impact strength of specialized engineering materials;
2. Especially to achieve impact strength of polyolefin plastics even exceeding that of pure polyolefin plastics at room temperature under low temperature conditions, to prevent product rupture and loss caused by transportation, loading and unloading collisions, and accidental drops at low temperatures;
3. Toughening, increasing rigidity, lowering freezing point temperature, and raising thermal deformation temperature by 10-15 ℃;
4. Greatly reduce the cost of raw materials for products;
5. Extend the service life of the product.
