Rubber accelerator M
Accelerator M is a natural rubber accelerator, both plasticizer effect. Vulcanization of low critical temperature, easy to make the rubber compound early curing. Can be used alone or in combination with other accelerators. For tires, rubber shoes, industrial rubber products. Due to bitter taste, not suitable for food industry with rubber products. Chloroprene rubber can be used as a retarder. This product and its derivatives is the most important accelerator.
English name: 2-Mercaptobenzothiazole
CAS NO: 149-30-4
Molecular weight: 167.24
EC NO: 205-736-8
Molecular formula: C7H5NS2
Appearance (visual) Light yellow or off-white powder
Initial melting point, ° C ≥ 173.0 171.0 170.0
Ash,% ≤0.30 0.30 0.30
Heating loss,% ≤ 0.30 0.40 0.50
Sieve residue (150 μm),% ≤0.0 0.1 0.1
Traits: light yellow monoclinic needle or crystal. Bitter, smelly, non-toxic, melting point 164 ~ 175 ℃, the relative density of 1.42 ~ 1.52. Case of fire burning, flash point 515 ~ 520 ℃, soluble in ethyl acetate, acetone, soluble in ethanol, propanol, chloroform, ethyl ether, carbon disulfide, ammonia, sodium hydroxide and sodium carbonate solution, slightly soluble in benzene, Insoluble in water and gasoline.
Uses: This product is a general-purpose rubber accelerator, widely used in all kinds of rubber. This product has a wide range of curing, can be used alone, or with dithiocarbamates, thiurams, guanidine, and other basic accelerators and use. This product is easily dispersed in the rubber, do not pollute. Mainly used in the manufacture of tires, tubes, tapes, shoes and other industrial products.
Packaging and storage: Woven bags, lined with plastic bags, net weight 20 kg. Store in ventilation. Dry place, not near the fire.
First, the design of vacuum disk dryer Description:
1, the performance and scope of application
Our company design and production of vacuum disc continuous dryer is based on the absorption of technology at home and abroad to improve and innovate efficient energy-saving continuous drying equipment. Its unique structure and working principle determines that it has high thermal efficiency, low energy consumption, small footprint, simple configuration, easy operation and control. Good operating environment and other characteristics. Widely used in chemical industry, medicine, pesticides, feed, new materials and other industries drying products.

Second, the vacuum disk dryer working principle and process

After the wet material is continuously added to the hopper of the host machine and the upper electric vacuum ball valve is opened, the material is distributed to the top two hoppers in turn. The vacuum ball valve on the upper and lower parts of the hopper is switched on and off. The materials are continuously added to the upper part of the drier under the action of the stirring motor A layer of dry plate, rake arm with rake leaves make rotary motion so that the rake leaf continuous material, so that the material fully absorb heat, the material flows along the index spiral line on the surface of the drying plate, the material on the small drying plate was Transferred to the outer edge, and fell to the outer edge of the outer edge of the large dry disk, the material on the large dry plate to move inside and from the middle of the discharge port into the lower small dry plate, the size of the dry plate alternately arranged up and down, The continuous flow of material through the entire dryer, the hollow drying plate into the heating medium. Heating medium from one end of the dry disk into the dry disk, derived from the other end. Dried material from the last layer of drying plate fell to the shell with the cooling floor, and finally rake leaves transferred to the discharge port discharge two tanks at the bottom, and by the upper and lower electric vacuum valve rotation switch discharge. The moisture evaporates and evaporates from the material and escapes. The material is forcibly extracted by the vacuum pump in the material tank arranged at the upper part and the lower part. The solvent is condensed into the buffer tank through the condenser for recovery, and the moisture is finally discharged.

Vacuum tray dryer process is suitable for the drying of low temperature sensitive materials such as pharmaceuticals, vitamins, biological products, enzymes, solvent-containing materials. The wet material is added in batches to the quantitative feeder capable of negative pressure, the vacuum pump is turned on, the tray dryer is in a negative pressure state, the material is uniformly added to the dryer through a continuous stopper to perform the drying operation, and the dried material is dried from the dried Discharge port at the bottom of the discharge. The moisture escaping from the material is recovered by the condenser and the solvent receiving tank, and the entire operation is carried out under negative pressure.
Third, the vacuum tray dryer to adapt to materials:

Closed recovery solvent tray continuous dryer process is suitable for the recovery of solvent drying process and the moisture is flammable, explosive, toxic substances, can not be directly discharged into the atmosphere, the recovery process must be dried. Such as wet parts of methanol, ethanol, gasoline, pyridine, petroleum ether, halogenated hydrocarbons, acetone, formaldehyde and so on. On the basis of the basic configuration, adding a continuous material out of the stopper, condenser, solvent receiving tank and vacuum pump. The moisture (solvent vapor) escaping from the desiccator enters the solvent recovery condenser from the top of the desiccator, condenses into a solvent liquid upon cooling of the cooling medium, enters the solvent receiving tank, and the noncondensable gas exits the solvent receiving tank from the vacuum pump air. Cooling medium should be based on the characteristics of the solvent, the choice of cooling water or cold brine.
1 Wet material 2 Dosing feeder 3 Continuous ball valve feed 4 Vacuum tray dryer 5 Condenser 6 Heating medium inlet 7 Heating medium outlet 8 Solvent receiver 9 Vacuum pump 10 Dried product 11 Cooling medium inlet 12 Cooling medium inlet 13 Exhaust gas exhaust

Fourth, vacuum disc dryer nitrogen supplement principle:
The nitrogen cycle-protected tray continuous dryer process is suitable for drying which is particularly susceptible to oxidation, particularly flammable, explosive and highly toxic. On the basis of the basic configuration, equipped with solvent condensers, solvent receiving tank, inert gas recycling machine, fin heater, inert gas tank and other equipment. Wet material from the quantitative feeder through a continuous stopper added to the dryer, from top to bottom movement to complete the drying process. Dry material is discharged from the bottom of the dryer through a continuous stopper. The moisture which escaped from the material enters the condenser from the top of the dryer to condense into a liquid and flows into the solvent receiving tank. The cooled inert gas is sent to the dryer by a circulating machine Inside the device, absorb the wet material into the condenser to re-cool, forming a closed loop. The inert gas is preheated by the fin heater before it enters the dryer. The inert gas tank replenishes the system with depleted nitrogen.
Fifth, a unique place of vacuum disk dryer

The material enters the hopper 1, the pneumatic ball valves a and d are opened at the same time, the material in the hopper 1 enters into the hopper 1, and the material in the hopper 2 enters the drier under the action of the stirring device , The pneumatic ball valve a and d are closed at the same time, the pneumatic ball valves b and c are opened at the same time, the material in the hopper 2 enters into the feed transition silo 2, meanwhile, the material in the transitional silo 1 enters the dryness under the action of the stirring device Machine, so repeatedly, wet material into the dryer on the top of the drying plate.

The dried material enters the inlet of the pneumatic ball valve e under the action of the rake knife, the pneumatic ball valve e and h are opened at the same time, the dry material enters the discharging hopper 1, the material in the discharging hopper 2 passes through
the pneumatic ball valve h Dryer, the same, the dried material under the action of the razor into the pneumatic ball valve g imports, pneumatic ball valve g and f at the same time open, dry material into the discharge hopper 2, the discharge material within the hopper 1 Through the pneumatic ball valve h out to the dryer, so repeatedly, dry material out to the dryer outside the package.

Vacuum tray dryer The company has applied for a patent, patent number: 201420254725.9, the information to be reproduced company must study, vacuum tray dryer production, design, the company has a wealth of technology and customer case, the vacuum tray dryer to adapt and solvent Material drying, solvent recovery condenser characteristics, choose P Nair dry, so you do not have to worry about.

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  Rubber accelerator vacuum disc dryer