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Key words: special for copper clad laminate, high insulation, high thermal conductivity, high thermal stability, acid and alkali resistance, wear resistance
Description: taking natural quartz and other inorganic non-metallic minerals as raw materials, our company provides high-quality composite soft filler and crystalline silicon micro powder for copper clad laminate, optimizes the product structure according to customers' needs, and provides reliable and durable products. Silicon powder used in copper clad laminate industry has remarkable physical characteristics: three high - high insulation, high thermal conductivity and high thermal stability; III. low - low coefficient of thermal expansion, low dielectric constant and low raw material cost; Two resistance - acid and alkali resistance and wear resistance. With the improvement of the surface treatment conditions of silica, its compatibility with the resin system is improved. Therefore, the application of silica as a filler in copper clad laminate can not only reduce the cost, but also improve some properties of copper clad laminate (such as thermal expansion coefficient, bending strength and dimensional stability). In short, from the mechanical and electrical properties
Basic characteristics of soft composite silicon powder:
| Physical and chemical properties | unit | Typical value |
| appearance | / | White powder |
| density | kg/m3 | 2.59×103 |
| Mohs hardness | / | 5 |
| Dielectric constant | / | 5.0（1MHz） |
| Dielectric loss | / | 0.003（1MHz） |
| Linear expansion coefficient | 1/K | 3.8×10-6 |
Soft composite silicon micro powder can be distinguished according to the following characteristics and matched according to customer requirements:
| Product characteristics | Relevant indicators | explain |
| chemical composition | SiO2 content, etc | It has stable chemical composition to ensure consistent performance. |
| Ionic impurity | Na +, Cl -, etc | It can be as low as 5ppm |
| Particle size distribution | D50 | D50 = optional within 0.5-10 µ M |
| distribution of partial size | It can be adjusted on the basis of typical distribution according to requirements, including multi peak distribution, narrow distribution, etc. | |
| Surface properties | Hydrophobicity, oil absorption value, etc | Different functional treatment agents can be selected according to customer requirements |
Simon new crystal materials
Jing yi refinement
