Product description, Product introduction:
Cryolite is double salt of sodium fluoride and aluminum fluoride. The chemical formula is 3AaF·A1F3. Cryolite stone is soft, waxy luster, hardness is 2.5 to 3, the gravity is from 2.95 to 3.01, and the color is white. The cryolite can improve process performance, improve friction coefficient and extend the service life of lining.
The character of Fluorite:
Cryolite is of natural and artificial two kinds. Natural cryolite is associated with granite.Producing method of producing artificial cryolite is as below: adding the sulfuric acid in fluorite, heating to make it produce hydrogen fluoride, and then make the sodium aluminate react to made cryolite. In addition, the phosphate rock also can be the raw material to produce artificial cryolite. In the process of manufacture phosphate fertilizer, recycle fluorine from the ore, and react with sodium hydroxide, then make the aluminum hydroxide react to make cryolite.
property:
Na content : 33 % min
Al content: 112.5% min
P content: 52% min
SiO2 content: 0.25% max
grade:200mesh,325mesh
sieving rate: 97%
Product description, Product introduction: Bentonite is clay rock with the main minerals of montmorillonite, it belongs to the aquifer shape aluminum silicate minerals. Physical properties of bentonite: Mohs Scale Hardness is from 2 to 2.5,density is 2.6 g/cm3 ,and the color is white or light yellow.Bentonite is characterized by the natures of strong hygroscopicity, decentralization, suspension, certain viscosity, Thixotropy and lubricity, and strong cation exchange capacity.Bentonite is used in Brake pad Drum brake or clutch, The recommended regular consumption of kaolin is from 2% to 8%. The character of bentonite: Bentonite is of oil luster, waxy luster, earthy luster. The fracture is of shells or dentate shape.Sodium base bentonite is dense clumps commoly, calcium base bentonite is loose earthy commonly, the surface has smooth feeling, relative density is 2- 3.Bentonite has strong hygroscopicity, the biggest water quantity is 8 to 15 times of its volume, it will expansion from several times to thirty times after water absorption.Bentonite has High plasticity and good cohesiveness. The main chemical ingredients of Bentonite are K,Na,Ca, etc., and these ingredients often exist in different content in bentonite. The Na2O and CaO content directly affects the physical and chemical properties of bentonite.Sodium base bentonite has better expansibility and cohesiveness than that of calcium base bentonite.To meet many application needs,it need to change bentonite base to improve the technical performance of bentonite. Because the variety of excellent performance, bentonite can be used as binder, Filler, catalyst, stabilizer, plasticizer and thickener etc..Bentonite can be used as filler in friction material to reduce cost. Property: A1203: 18% min SiO2: 56% min Na2O+K2O: 2%-3% PH: 8.5-10.6 expansion coefficient: 20times-30times grade: 200mesh,325mesh sieving rate: 97%
Product description, Product introduction: Rubber powder is made by crushed and screened methyl vinyl silicone rubber pieces The rubber powder used for friction materials in order to improve the friction performance, improve the friction coefficient and reduce noise. The character of rubber powder: The rubber is used as auxiliary materials, the purpose is to reduce product of hardness and elastic modulus, improve the toughness and impact strength. In brake rubber, the formula of the rubber consumption may be equal to or more than resin usage. The main Ingredient of the rubber binder is rubber, while phenolic tree as auxiliary Ingredient. The rubber has good elasticity, elastic temperature range from 70 �?? to 130 �??.The rubber has excellent flexing resistance, flexible about more than 206 times. Rubber has good abrasion resistance, cold resistance and insulation. If brake material is harder, it is easier to cause braking noise. When add rubber ,it reduces the material hardness and enlarge the adhesive surface to obviously reduce the brake noise. As the main made of soft brake pads products of which the binder is mainly made by Rubber belong to low noise or non-noise friction materials property: Ingredient: mainly of Vinyl silicone rubber powder Color: black or yellow grade:40mesh to 60 mesh
Chromite is lack or brown, The main ingredient of chromite FeOr2O3. It is shaft and granular crystal system. The hardness is 5.5 and density is 4.3 g/cm3. Because melting point of chrome oxide is 1900?,so can adjust high-temperature friction coefficient or decrease high temperature heat recession , clean the friction couple in the high temperature to increase the efficiency of the brake. Chromite can applied in brake pad drum brake or clutch.The recommended regular consumption is 2?8% density: 4.3-4.6/cm3 chrome oxide content: =30% screen analysis: +S 200
Product introduction: chalcocite is lightgray powder,it is made by selected and crushed chalcocite ore, the main ingredients is cuprous sulfide. The density is 8.3-8.9g/cm3, the hardness is 3 ,the melting point is 1030 centigrade and the boiling point is 2310 centigrade. Chalcocite used for friction materials to adjust the high temperature friction properties and wear resistance, it suitable for disc brake pads and drum brake pads. According to the requirements of the performance,the recommended regular consumption is between 2% and 8%. Property: density: 5.4-5.8g/cm3 copper content:18%-20% moisture:2%max screen analysis: +S 100 0 -S 180 90%max grade:200mesh,325mesh sieving rate: 97%
The character of concentrate iron: Iron in nature is mainly of the iron oxide and sulfide, and are mainly of divalent and trivalent, and trivalent compounds is the most stable. Magnetic iron ore is the most important basic structural material.Almost all large scale iron ore in china are rich in elements, for example, panzhihua iron ore containing rare earth; daye iron mine containing copper, cobalt and gold;dadingshan iron ore containing tin, etc.Ferroferric oxidecan improve the friction function of final product and have shading effect
Product description, Product introduction: Zeolite is a kind of new material, by aqueous alkali or alkaline earth metal aluminum silicate minerals Main Chemical composition of Zeolite are Si02,A1203, H2O and alkaline earth metals, Si02 and A1203 content is about 80%.Physical properties of zeolite: Moh�??s Scale Hardness is from 3.5 to 5.5,density is from 2.1 g/cm3 to 2.5 g/cm3.Zeolite Has good performance of adsorption, cation exchange properties, catalytic properties, heat resistance, acid etc.Zeolite is used as friction material to for stable friction coefficient,and can reduce the cost. It can be used in brake pad drum brake or clutch. The recommended regular consumption of zeolite is from 2% to 8%. The character of Zeolite: Zeolite is the floorboard of the family of zeolite minerals, a frame structure, is a kind of aqueous alkali or alkaline earth metal aluminum silicate minerals. At present our country found more than 10 kinds of natural zeolite,such as clinoptilolite ,mordenite zeolite, alkali ling zeolite and calcium cross,but widely used only clinoptilolite and mordenite zeolite.Zeolite has many function and usage. Zeolite density is small, high foam, good activity, zeolite water of crystallization and the general structure of water (OH) is different, because it as water molecules, the zeolite water under a certain temperature heating, the lattice structure are not destroyed after dehydration, the location of the original molecules there are still gaps, form a lattice structure, sponge with water and gas suction space feature, when the temperature rises, the zeolite cavity that the larger molecules to enter, cooled molecules trapped within the cavity and keep for a long time, until the heat release. The characteristics of zeolite was known as the "boiling". Foreign patent added zeolite in friction material to absorb gaseous and liquid molecules emitted by thermal decomposition to achieve the purpose of reducing thermal annealing Property: SiO2: 65%min A1203: 18% -22% Zeolite content: 60% min grade: 200mesh,325mesh sieving rate: 97%
The character of antimony sulfide: The melting point of antimony sulphide is 548 centigrade, it is of soft metal sulfide with low melting point. It would forms inorganic binder and have the smiliar sintering effect with sintering ceramic in at high temperature.When add with antimony sulfide, it can reduce the dosage of organic binder.As a result, the resin dosage in brke pad is only 7%-8% or even lower like 5% to 6% because add the antimony sulphide. Using antimony sulfide is good for reducing the heat recession of friction coefficient, and for reducing the high temperature wear. Antimony sulfide hardness is low, can reduce the brake noise of brake pads Property: Density: 6.6g/cm3 Antimony sulfide content: 90% Grade:200mesh, 325mesh
Product description, Product introduction: The light calcium carbonate is made by limestone by the polarization method. The light calcium carbonate physical characters: mohs hardness is from 3 to 3.5, the density is from 1 g/cm3 to 1.5 g/cm3 and the color is white. Light calcium carbonate is mainly used in rubber, plastic, paper making, medicine, chemical,building materials and other industries. Used for friction materials, light calcium carbonate play a role of reinforcing, tensile filling, flame retardant, etc. The character of Light calcium carbonate: Light calcium carbonate is a kind of basic raw materials in chemical industry. It is widely used in rubber, plastic, papermaking, coating, medicine, health care and pesticide industries. Light calcium carbonate is an ideal chemical filler, the final product made by the filler of light calcium carbonate can be waterproof and insulating. Light calcium carbonate has the unique and high quality like Beautiful light, durable, smooth and clear. Light calcium carbonate can reduce production cost, improve quality, increase efficiency. Light calcium carbonate is a kind of ideal chemical filler,the finished product with filler of light calcium carbonate is of waterproof and insulating. Property: CaC03: 98.3% M: 0.08% Fe203: 0.04% PH value(10% slurry): 10.1 Sedimentation value: 2.83.6 g?cm3 Volatite matter at 105 (%)?0.24% grade: 200mesh,325mesh sieving rate: 97%
Product description, Product introduction: Used in the friction material Precipitated barium sulfate has good dispersibility, and strong precipitation resistance, it can be adsorbed easily with all kinds of resin, and can improve high temperature resistance and abrasion performance of resin binder and friction materials. The precipitated barium sulfate to adjust the performance of friction coefficient. The material is widely used in friction material industry. The character of Fluorite: The precipitated barium sulfate is made by chemical precipitation. In order to improve the dispersion, or other functional purposes,The so-called modified barium sulfate, is conducted on the basis of precipitated barium sulfate or barite surface modification treatment.There arent any difference in physical properties, chemical properties and usage. Of course, there may be detailed difference in usage because of different surface treatment agent, such as conductivity, PH value of acid or alkali, etc. property: BaSO4 : 48 % min Fe content: 0.05% max Solubility in water: 0.3% max Oil absorption: between 15 and 20 grade:200mesh,325mesh sieving rate: 97%
