Basic Info.
Application
Rubber, Plastic, Chemical, Metallurgy, Ceramic, Casting
Transport Package
25kg in Woven Bag, Jumbo Bag, as Per Request
Specification
400-1250mesh
Product Description
Product IntroductionCristobalite powder is made of selected vein quartz ore calcined at about 1500 ºC, processed by non-polluting grinding, magnetic separation and classification.
The properties are stable, the silicon content is over 99.8%, the crystalline phase is tetragonal, the hardness is about 6.5, the density is 2.45, large specific surface, high porosity, good weather resistance, good precipitation resistance, good thermal shock resistance .
Item | Unit | Standard Scope | Typical Values |
Appearance | - | White powder | 600mesh |
SiO2 | % | 99%-99.8% | 99.6 |
Mean Grain size | µm | 2-25 | 11.56 |
Whiteness | % | 90-98 | 94 |
Fe2O3 | % | ≤0.03 | 0.012 |
Burning Vector | % | 0.1-0.3 | 0.16 |
PH Value | | 6.5-8.0 | 7.2 |
Moisture | % | 0.02-0.1 | 0.08 |
Cristobalite | % | 65-95 | 73.8 |
BET(SSA) | m2/kg | 1700-8000 | 4828 |
Density | g/cm3 | 2.45 | 2.45 |
Moh's hardness | | 5-7 | 6 |
Melting Point | ºC | 1750 | 1750 |
We can produce 400-6000 mesh products with different specifications according to customer requirements. |
Application:It is used in jewelry casting, precision casting, dental materials, electronic chip polishing, polishing materials, building interior and exterior wall coatings, road reflective coatings, automotive primers, plastics, rubber, silicone rubber, adhesives, national defense and other fields.
Certificates :ISO 9001
Main Features:1. Excellent optical properties. The refractive index of cristobalite decreases from 1.55 to 1.48, which is closer to that of PE, PP and some resins. The blended resin is transparent and does not cover the color of the pigment itself, while filling with other fillers will make the color of the pigment lighter and distorted.
2. High reflectivity. The concrete structure of cristobalite can help light reflection and replace glass beads as reflective paint. It can not only enhance the anti-skid property, but also improve the reflectivity of paint.
3. High whiteness, low density and bright color. The whiteness of cristobalite is over 95%. It can replace part of titanium dioxide and reduce the cost of formulation when used in coatings and paints.
4. Corrosion resistance, scratch resistance and scrubbing resistance.
5. It does not contain organic pollution and has very low metal content. It can enhance the UV resistance of the coating and has good insulation.
6. Excellent thermal shock resistance. When quartz is heated at 220 - 240 C, a certain degree of thermal expansion occurs, which compensates for the shrinkage of epoxy resin and gypsum during curing reaction at this temperature, so that the casting body does not deform.
7. Application of cristobalite in adhesives
It has low oil absorption value, basically no edges and corners, low viscosity relative to white carbon black, stronger weathering property than white carbon black (white carbon black is alkaline), good bonding effect ( rough surface), good peel strength, high pull-out strength and high surface resistance. After modification, it can be better combined with epoxy resin system to eliminate bubbles and settlement.
A suitable proportion of diatomite can be added to the formulation so as to better improve the adhesion. The silicon powder has many joint surfaces, obvious edges and corners, and difficult to bond. Kaolin is hexagonal flake, red after burning, and has many joints (not easy to bond).
8. Modified quartz powder is usually used as an anti-caking material for transparent PP and PE, LDPE, LLPDE. In film production, because quartz has the same refractive index, for most polyolefin films, this additive has little effect on the optical properties of films. Other special applications include ultrathin films and double extrusion films, which require ultrafine quartz powders. 600 mesh quartz powder is usually used as IR absorption material in greenhouse film.
9. Cristobalite powder has high surface energy, hydrophilic and oleophobic surface, easy agglomeration. It is difficult to disperse evenly in non-polar or weakly polar paints. Therefore, it is necessary to modify the surface of ultrafine powder so that the surface of quartz particles can be coated with a layer of organic substances (such as coupling agents, surfactants, etc.) to make it oleophobic and hydrophilic to oleophilic and hydrophobic. This not only enhances the compatibility and binding force between quartz powder and matrix/substrate, but also enhances the dispersion of quartz.
OUR SERVICE:1. Timely response
Timely response to your inquiry, multiple choice recommendations based on your demand, quickly respond mails and provide solutions.
2.Sample check
Samples and trial order are accepted for the quality check.
3. Strict quality control
Arrange production on time and control quality strictly.
4. Shorter delivery time
Larger production capacity and convenient transportation guarantee the delivery time.
5. Professional and complete shipping documents
Provide all the information and pictures in details from order to delivery;
Offer relative export documents and original certificate if needed;
6. Warm and considerable after-sale service
FAQ:Q1. Can I have a sample order for quartz products?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2. What about the lead time?
A:Sample needs 3-5 days, mass production time needs 1-2 weeks for order quantity more than
Q3. Do you have any MOQ limit for Quartz product order?
A: Low MOQ, 0.5KGS for sample checking is available
Q4. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional.
Q5. How to proceed an order for Quartz Products?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.
Contact Us :ALEX002()163.COM
Address:
5-18 Houqiangwei Village, Tuofeng Town, Donghai, Lianyungang, Jiangsu, China
Business Type:
Manufacturer/Factory
Business Range:
Metallurgy, Mineral & Energy
Management System Certification:
ISO 9001, ISO 14001, OHSAS/ OHSMS 18001
Company Introduction:
Lianyungang XINHAI QUARTZ Products Co., Ltd. (HS) was founded in May 2012. It is a high-tech enterprise with leading technology in China, specializing in the production of silica powder and quartz sand and passed ISO 9001: 2015 ISO14001 OHSAS 18001 certification.
At the same time, we have built professional and high-level laboratories and cooperated with many domestic universities to achieve the combination of production, learning and research, and built a professional R&D and innovation team with high-end product development and technological innovation capabilities.
At present, more than 30 kinds of specifications of silicon powder products have been developed and produced, such as crystalline silicon powder, fused silicon powder, active (modified) silicon powder, high purity silicon powder, soft composite silicon powder, electronic silicon powder, electrical silicon powder, ultrafine silicon powder, spherical silicon powder, glass powder, cristobalite powder, high purity quartz sand, fused quartz sand, etc.
The products are used in hundreds of different industries, such as adhesives, electronic materials, electrical insulation materials, liquid crystal glass, medical materials, dental materials, precision casting, paint coatings, functional rubber, plastics, chemical materials, nano materials, advanced building materials, etc. Our products are sold to more than 20 provinces and regions in China and exported to Asia, Europe, USA, Africa and other countries.
XINHAI has strong technical force, advanced testing instruments, and perfect pre-sale, in-sales and after-sales service system. Always adhere to the concept of "Quality First, Innovation Guiding", relying on the rich quartz mineral resources in Donghai County, we are committed to becoming the world′s leading supplier of industrial powder materials application, striving to provide customers with the best quality products and services.