precision 99 Alumina Ceramic insulating tube bush
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Alumina Ceramics:
The modified varieties of alumina ceramic polyethylene mainly include chlorinated polyethylene, chlorosulfonated polyethylene, cross-linked polyethylene and blended modified varieties. Alumina ceramics are random chlorides obtained by partially replacing hydrogen atoms in polyethylene with chlorine. Chlorination is carried out under the initiation of light or peroxide, and is mainly produced by aqueous suspension method in industry. Due to the difference in the molecular weight and distribution of the raw material polyethylene, the degree of branching, the degree of chlorination after chlorination, the distribution of chlorine atoms and the residual crystallinity, chlorinated polyethylene can be obtained from rubber-like to hard plastic-like. The main purpose is to be used as a modifier of polyvinyl chloride to improve the impact resistance of polyvinyl chloride. Chlorinated polyethylene itself can also be used as electrical insulation material and ground material. Alumina ceramics, when polyethylene reacts with chlorine containing sulfur dioxide, part of the hydrogen atoms in the molecule is replaced by chlorine and a small amount of sulfonyl chloride groups to obtain chlorosulfonated polyethylene. The main industrial manufacturing method is the suspension method. Chlorosulfonated polyethylene is resistant to ozone, chemical corrosion, oil, heat, light, abrasion and tensile strength. It is an elastomer with good comprehensive properties and can be used to make food contact equipment parts. Alumina ceramics use radiation method (X-ray, electron beam or ultraviolet radiation, etc.) or chemical method (peroxide or organic silicon cross-linking) to make linear polyethylene into a network or body-shaped cross-linked polyethylene. Among them, the silicone cross-linking method has a simple process, low operating cost, and molding and cross-linking can be carried out step by step, and blow molding and injection molding are suitable. The heat resistance, environmental stress cracking resistance and mechanical properties of cross-linked polyethylene are greatly improved than polyethylene, and it is suitable for large-scale pipes, cables and wires, and rotomolding products.
properties: High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc.
Data Sheet↓
Color: White/Ivory Density: 3.9g/cm3 Alumina Content: 96% 99% 99.5% Gas permeability: 0 Water Absorption: 0 MONS' Hardness: 82 Vickers Hardness (Hv50): 15.7(1600) Gpa(Kg/mm²) Flexural Strength(20°C): 330Mpa Compressive Strength(20°C): 2000Mpa Fracture Toughness (20°C): 4 MPam1/2 Thermal Conductivity(20°C): 27.5W(m.K) Thermal Expansion Coefficient: 7.6 10-6/°C Thermal Shock Resistance: 200 △T°C
Maximum use temperature 1650°C
Dielectric Strength: ＞10 KV/mm
Dielectric Constant: 9.1er
Dielectric Loss Angle(1MHz): 0.0002-0.0003
Volume Resistivity(20°C): ＞1014Ω.cm
Application industry: Machinery, electronic, chemical, petroleum etc. Specific application: Electrical ceramic substrate, plunger, sealing ring etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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