Chinese dried Reuters recently, China Chemical Industry Guilin Engineering Co., Ltd. invention patent four composite rubber extruder head of Guangxi won the first patent inventions achievement trade fair project gold medal. The main performance and technical indicators of this equipment have reached the international advanced level. The compound rubber extruder is the key process equipment for tire production. It is composed of 4 sets of pin barrel cold feed extruders. The 4 different formulas are heated and plasticized by an extruder and then delivered to the compound head. Extrusion allows accurate control of extrusion product temperature, dimensional accuracy and extrusion speed to meet a variety of production process requirements. In addition, the machine-external laminating and out-of-machine compounding technology of the original tire production can be converted into a variety of in-machine composites. This is of great importance to improving the quality of tires, increasing productivity, and reducing energy and raw material consumption. In the production of sealant tapes, the three composite heads and four composite heads have also developed rapidly. In China, the compound head of the sealant strip production line that was introduced earlier is mostly equipped with a shear head. The structure of the head is relatively complex. After years of development, the three-composite and four-compound heads used today are quite simple and have good results. The shear head is no longer used. With the development of home-made composite extrusion equipment, compound extrusion technology and production technology will emerge a relatively rapid development. The localization of advanced equipment is conducive to new types of equipment and technology, improving the level of enterprise equipment and promoting production development, especially due to the rapid development of radial tire production in China and the advantages of pin-type cold-feed extruders in recent years. The application of the cold feed extruder has greater advantages, becoming a new generation of hot feed extruders and ordinary cold feed extruders, providing broad development and application prospects for pin-type cold feed extruders. . Sodium Tripolyphosphate, Na5P3O10, Molecular weight 367.86, white powder; Melting point 622 °C. free soluble in water, aqueous solution appears ACID. It has got salient chelating capacity to metal ions of Ca and Mg etc. and can soften hard water to make suspension into solution, alkalinity, without causticity. It is an inorganic compound with formula Na5P3O10, is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid.Sodium tripolyphosphate is produced by heating stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions. Sodium Tripolyphosphate,Stpp Food Grade,Washing Powder Stpp,Detergents Preservatives HENAN JINHE INDUSTRY CO.,LTD , https://www.speciatyelement.com
It has different bulk density, i.e. low density 0.35-0.6g/cm 3 , medium density 0.6-0.8g/cm3 and high density 0.8-1.0g/cm3. This product has two crystalline forms, namely phase I (high temperature phase) and phase II (low temperature phase). The chemical properties of the two phases are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving.
It can be used as one of the main auxiliaries for synthetic Detergent, synergist for soap; water softener, tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.
As an oil contamination resistance agent in paper production; As in foodstuff industry it is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans. It may tender the meat in canned ham and soften the skin of horse bean in canned horse bean. It may also serves as a softener or densifier in foodstuff industry.