STM-903 is a reactive polysiloxane water based rubber release agent. It has good wettability to the rubber and can form a uniform and dense film on the surface of the rubber. The film can effectively reduce the adhesion between the rubber and the mold, make the product easy to release and improve the appearance quality of the product. Moreover, it can block the diffusion of harmful substances into the mold and reduce the corrosion rate of the mold.
Application Area： Flat and special pattern rubber conveyor belt.
Usage： STM-903 can be applied on dies or on raw rubber surface directly. Before use, it can be diluted by water. The proportion of water added depends on the situation of field use. The recommended ratio of STM-903 to water is 1:5.
★ When used on moulds, the mould should be thoroughly cleaned and recommended for spraying. For the first spraying, the separator should be sprayed uniformly on the hot mould for 2-3 times, and solidified for a period of time. The longer the drying time and the higher the temperature, the longer the isolation film will be, and the more effective demoulding times will be. After these operations are completed, production can begin. In the later vulcanization process, it is only necessary to spray STM-903 once every few intervals and solidify it for a period of time.
★ Spraying, brushing, roll coating and rubbing can be used to coat the surface of the compound evenly with STM-903. After the moisture evaporates on the surface of the compound, the vulcanization can be installed. The coating should be uniform as far as possible, and there should be no leak spots to avoid affecting the isolation effect. During the vulcanization process, part of the product will be transferred to the surface of the die, forming an isolation film on the surface of the die. Therefore, after several successive coating cycles, painting can be carried out at intervals of several cycles; painting cycle and interval period should be determined by experiments according to specific conditions. For flat and shallow pattern conveyor belts, both methods can be used; for deep pattern products, it is recommended to apply directly on raw film.
Technical indicators： Composition: reactive polysiloxane emulsion with special structure. Appearance: white liquid PH: 4~8
Packing： 25kg/ plastic bucket 50kg/ plastic bucket
Safety： The correct use of this product will not cause any harm. For more information, please ask for our MSDS.
Storage and transportation： According to the law of transportation, the mold isolating agent STM-903 is a non hazardous product and transported by non hazardous goods. Because of its reactivity, STM-903 must be sealed and stored, and should be protected from freezing, high temperature and direct sunshine. The validity period is 12 months.
Special description： Product technical information and data is based on the best information available and does not constitute or imply a warranty or patent infringement of any kind. The user is responsible for testing product suitability before to use the production.If the conveyor belt release agent special release agent for rubber belt is the one you are looking for, welcome to buy the best products with our professional manufacturers and suppliers in China. We are equipped with a productive factory at your service. And our company will offer you good service and fast delivery.