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Wollastonite
Characteristics:
Wollastonite is a calcium salts Piangui Suan minerals, chemical composition theory 48.3% CaO 51.7% SiO2.
Wollastonite has a small fiber-like, fibrous, flake-like crystals, such as shape, because of its non-toxic and high brightness, good dielectric properties and high heat resistance, thermal expansion coefficient of 6.5 * 10 -- 6. C-1, oil-based bargain-hunting, low water absorption, thermal stability, chemical stability, and other physical and chemical properties, which are widely used in the construction ceramics, paint, plastics, rubber, refractory and metallurgical industries, particularly with organic Polymer composite material is more eye-catching.
Uages:
Wollastonite powder modified needle-like powder used in engineering plastics do fill a major role is: To improve the mechanical properties of plastics and heat resistance: Plastic products to improve the function of strength, reinforcing effect, and enhance the role: To adjust the plastic flow Ability to change; Improve the dimensional stability; Alternative to more expensive prices for glass fiber filler can be part of the alternative high price of plastic consumption, thereby reducing the cost of products.
As a filler in the use of plastic filled with modified technology, wollastonite products now account for Europe and the United States inorganic filler market 10% -15%. Its main advantage is that it not only from filling the role, and also mica, talc comparable to or even can do to enhance materials to replace asbestos. At present, it has been in the epoxy, phenolic, thermosetting polyester, such as polyolefin plastic in a variety of applications received.
In the nylon 6, nylon 66 / PA compound high-temperature applications has the following advantages: Low moisture absorption, can replace the grinding Glass, enhance economic efficiency, to replace some of the short glass fiber, increase the thermal conductivity and dimensional stability, increase the heat distortion temperature, Refractive index and increase the surface plating layer, reduce the degree of fog.
In the application of polyurethane has the following advantages: RRIM in LDR and complex ground glass in the alternative, enhance economic efficiency, improve the appearance of the surface and reduce slurry viscosity, injection molding compound with no settlement, no stratification, low moisture absorption, Reduce the linear expansion coefficient (CLTE), increase the heat distortion temperature (HTD).
In the PP / CTPO / HDPE materials in the application of the following advantages: Lower the linear expansion coefficient CLTE (seamless), to improve anti-scratch-resistant performance, increase heat distortion temperature (HDT), to increase the impact of low temperature / thermal
Properties of collapse, and man-made fiber Compared to the cost savings, the rate of contraction in general and the current injection can match the processing equipment, hardness and excellent impact resistance, non-toxic tasteless material.
In the LCP / PBT / PET applications in the following advantages: Improve the dispersion and wet, mold to improve liquidity and cycle time, improve the appearance of the surface and improve the physical and mechanical properties to replace the abrasive chopped glass fiber and glass fiber to improve the economy Efficiency, increase the heat distortion temperature.
In the elastomer (Elastomers) application has the following advantages: Increase the heat aging performance, lower compression deformation
Flame-retardant, good thermal stability, low moisture absorption.
Packaging: 25KG/BAG composite plastic woven bags lined polyethylene film bag.
Product Specifation
| Index | Sio 2 ≤ | Cao ≤ | AL 2 O 3 ≤ | Fe 2 o 3 ≤ | Tio 2 ≤ | Mgo ≤ | S ≤ | P ≤ | Loss L/D | Standard | whiteness ≥ | application |
| particle size | 45-56 | 38-45 | 0.8 | 0.5 | 0.003 | 0.8 | 0.003 | 0.003 | 5-10 | 0-10mm | 75 | Ceramic idiosome |
| glaze powder | 49-51 | 44-46 | 0.8 | 0.25 | 0.003 | 0.8 | 0.003 | 0.003 | 1-3.5 | 325-800mesh | 85 | glaze coating |
| metallurgy grade powder | 49-51 | 44-46 | 0.8 | 0.25 | 0.003 | 0.8 | 0.003 | 0.003 | 1-3.5 | 200-325 mesh | 90 | metallurgy |
| Needle powder | 49-51 | 44-46 | 0.8 | 0.25 | 0.003 | 0.8 | 0.003 | 0.003 | 1-3.5 | 100-1250mesh | 90 | Plastics, rubber |
| oil absorption 0.008 water absorption 0.02 PH 7-8 activation rate > 96.7 | ||||||||||||
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