PP plastic being flame-resistant burning inhibitor's choice burning inhibitor it divides into according to the element type: The halogen is, the phosphorus is, the halogen - phosphorus is, the nitrogen is, the silicon is, the aluminum magnesium is and so on, divides into the inorganic burning inhibitor, the organic burning inhibitor, the high polymer burning inhibitor according to the chemical constitution and so on, with is been flame-resistant according to the burning inhibitor the material relations to divide into the increase burning inhibitor and the response burning inhibitor. usually the method which often uses in the plastic being flame-resistant modification is the increase burning inhibitor blending modified method. PP (polypropylene) is flame-resistant the burning inhibitor which often uses to include: The aluminum magnesium is the burning inhibitor, namely magnesium hydroxide, aluminum hydroxide; The phosphorus is the burning inhibitor, the red phosphorus mother grain and so on; The nitrogen is burning inhibitor MCA, MA and so on; Some also use the organosilicon burning inhibitor. the polypropylene quality of material sends crisply, the anti-impact properties do not calculate are too good, if introduced the intermiscibility difference or the inorganic material in the polypropylene plays the packing role objectively, often will cause the polypropylene the mechanical property to worsen, the longitudinal strength, the shock strength by far possibly will not be able to satisfy the target, at present improved the method often used the plasticizer plasticizing, the plasticizer price is high, the plasticizing at the same time material's rigidity worsed, very possibly lost uses the polypropylene originally value. Therefore should better not use regarding the polypropylene either as far as possible little uses the inorganic packing way modification or reduces the cost, while uses its own characteristic the suitable improve properties target is the best plan fully. makes the burning inhibitor which the being flame-resistant polypropylene usually uses to have the halogen department, inorganic magnesium hydroxide, aluminum hydroxide; Phosphorus department, red phosphorus and so on; The nitrogen is MCA, MA and so on and the organosilicon department. the magnesium hydroxide and so on belongs to the inorganic burning inhibitor, is flame-resistant the mechanism is when the combustion releases the union the water, simultaneously filled the quantity also to reduce the organic material ignitability high. With being flame-resistant merits and so on magnesium hydroxide is the environment-protective is good, does not release the smog, does not produce harmful and has the dispute gas, the cost is inexpensive. The shortcoming is the recruitment is big, the V0 rank being flame-resistant standard general increase proportion ≥65%, the such high recruitment may think that being flame-resistant in PP the inorganic filler occupies above entire system's 2/5. Causes directly the consequence is flame-resistant the PP proportion to be big, surpasses 1.5; The longitudinal strength from ordinary has not been flame-resistant PP about 23 to drop to 18 below; The elongation ratio drops from 23 about to 1.3; The shock strength from 15 drops to 1 about. Worsened the PP performance seriously. Therefore is often used requests high in the softening point, but other performance may neglect situation.