I. The necessity of adding magnesium hydroxide flame retardant in soft PVC
Polyvinyl chloride (PVC) is a common chemical material, usually divided into two kinds of rigid PVC and soft PVC. Rigid PVC has a certain degree of self-extinguishing, while soft PVC due to the addition of many plasticizers to increase its plasticity and processing properties, resulting in a significant decrease in the flame retardant properties of the PVC system. And if PVC burns, it will produce a lot of toxic gases and smoke, which is very unfavorable to the human body and the environment. Therefore, in order to improve the flame retardant properties of soft PVC, but also to reduce the damage of the material to the human body and society, non-halogen, smoke suppression, does not produce corrosive gases, non-toxic and environmentally friendly magnesium hydroxide flame retardant has entered the field of vision. It is currently recognized as one of the efficient and environmentally friendly inorganic flame retardants.
2, magnesium hydroxide flame retardant on the mechanical properties of PVC system to solve the problem
Magnesium hydroxide is widely used in the field of polymer flame retardant due to its high thermal decomposition temperature, efficient promotion of substrate carbonization and strong acid removal ability. However, the addition of magnesium hydroxide flame retardant will have an effect on the mechanical properties, so it is also necessary to modify the magnesium hydroxide treatment.
Messi Biology experiments found that the addition of modified magnesium hydroxide flame retardant system of oxygen index than the unmodified system and pure matrix resin has a great degree of improvement, does improve the system’s flame retardant properties; at the same time, so that the surface of magnesium hydroxide wrapped in a layer of organic matter, greatly reducing the surface energy, so that it can be uniformly dispersed in the soft PVC system and compatibility, and therefore is not easy to agglomerate, so that the mechanical properties of the system than the unmodified Improvement.
3, the development prospects
Soft PVC market demand, about 1/3 of the market, the development prospects are very promising. Can be made into better agricultural films, raincoats, tablecloths, ticket holders, handbags and so on. Also widely used in the manufacture of plastic shoes and ceilings and artificial leather surface layer. But the more widely used the more attention should be paid to the flame retardant PVC materials, choose Messi Biology professional manufacturers of magnesium hydroxide flame retardant products, so that Zehui for the thousands of households of personal and property safety escort.