refractory YSZ Zirconia Ceramic machining components
Reputation depends on quality, quality comes from Hard!
Zirocnia Ceramics:
Zirconia solution method: The polymerization is carried out in a solvent, but both ethylene and polyethylene are dissolved in the solvent, and the reaction system is a homogeneous solution. The reaction temperature (≥140℃) and pressure (4～5MPa) are relatively high. It is characterized by short polymerization time and high production intensity. It can produce polyethylene with high, medium and low densities at the same time, which can better control the properties of the product; but the polymer obtained by the solution method has a low molecular weight, a narrow molecular weight distribution and a solid The content is low. Zirconia gas phase method: ethylene is polymerized in a gaseous state, generally using a fluidized bed reactor. There are two types of catalysts: chromium series and titanium series, which are quantitatively added into the bed from a storage tank, and high-speed ethylene is circulated to maintain the fluidization of the bed and remove the heat of polymerization. The polyethylene produced is discharged from the bottom of the reactor. The pressure of the reactor is about 2 MPa, and the temperature is 85-100°C. The gas phase method is the most important method for the production of linear low-density polyethylene. The gas phase method eliminates the solvent recovery and polymer drying processes, and saves 15% of the investment and 10% of the operating cost compared with the solution method. It is 30% of the investment of the traditional high pressure method and 1/6 of the operating cost. As a result, it has developed rapidly. However, the gas phase method needs further improvement in product quality and variety. Zirconia uses a chromium catalyst supported on silica gel to polymerize ethylene under medium pressure in a loop reactor to produce high density polyethylene. Processing and application: It can be processed by blow molding, extrusion, injection molding and other methods, and is widely used in the manufacture of films, hollow products, fibers and daily sundries. In actual production, in order to improve the stability of polyethylene to ultraviolet rays and oxidation, and improve processing and use performance, a small amount of plastic additives must be added. Commonly used ultraviolet absorbers are ortho-hydroxybenzophenone or its alkoxy derivatives, etc. Carbon black is an excellent ultraviolet shielding agent. In addition, antioxidants, lubricants, colorants, etc. are also added to expand the application range of polyethylene. Zirconia Ceramics: more than half are used for film products, followed by pipes, injection molded products, wire wraps, etc. Medium and low pressure zirconia: injection molded products and hollow products are the main products. Ultra-high pressure zirconia: due to the excellent comprehensive properties of ultra-high molecular weight polyethylene, it can be used as engineering plastics.
Data Sheet↓
Color: Customized Density: 6.0g/cm3 Zirconia Content: 94.4% Gas permeability: 0 Water Absorption: 0 Crystal Size: 0.5um Rockwell Hardness(45N): 78R45N Vickers Hardness (Load 500g): 11.5(1175)Gpa(Kg/mm²) Flexural Strength(20°C): 800Mpa Compressive Strength(20°C): 2000Mpa
Modulus of Elasticity(20°C): ＞200Gpa
Fracture Toughness(20°C): 9.0 MPam1/2 Thermal Conductivity(20°C-400°C): 2.5W(m.K) Thermal Expansion Coefficient: 9.6 10-6/°C Thermal Shock Resistance: 250 △T°C
Application industry:
Machinery, fiber optic, knife, medical, food, petroleum etc.
Specific application:
plunger, Ceramic Shaft, fiber optic bushing, stub, grinding, ceramic knife, ceramic slide guide, machined plunger, mobile phone shell, watch case, haircut razor blade 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
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
