Study On The Fire-retardant And Anti-static Of Polyethylene Foam

In this paper, the LDPE foam risen property, the fire-retardant property, the anti-static property and molding handicraft were investigated, have ascertained concrete material being allotted proportion set with material function relation. also, discussed polyethylene foam material anti-static mechanism and fire-retardant mechanism.Adopt SN and ASA2 be antistatic agent, studied an impact of two kinds antistat agent over polyethylene foam material volume electric resistance.. Discover antistat dosages, the ambient temperature and humidity city weighing to ultimate volume of foam material electric resistance. Use ASA2 type into foam surface produced antistatic polyethylene foam, when antistatic liquid thickness greater than 8% o'clock, Foam volume electric resistance is lowered to 10⁶O·m Strengthen the color agent adding be able to bear water scrubbing and friction and antistatic durability having improved the foam surface...Study the formula having deduced the experience betweenρ_v and antistat thickness:ρ_v =(1+1/C₂)k/C₁..Study DBDPO, CPE, Sb₂O₃, Mg (OH)₂ to be burning agent affect fire-retardant function effect to PE foam material., The usage thick gravy department alone fire-retardant agent DBDPO/CPE, burn the black cigarette having a great quantity occasionally, And the partner has a molten drop, can not reach very good effect. The organic silicon compound is Mg (OH)₂'s effective fire-retardant a synergist, The red phosphorus burns to LDPE/Mg (OH)₂/organosilicon fire-retardant having the fairly good coordination effect. The basis that blends in LDPE/Mg (OH)₂ with 60/40 is upper, add organosilicon , red phosphorus , stearic acid magnesium every 5 share, This formula oxygen exponent has reached 33, satisfied fire-retardant a request. Also, level that system hot strength and tearing elongation rate have kept comparatively highly..Study the foam handicraft existing in fire-retardant agent and anti-static agent. Base body resin selects and uses low-density polyvinyl resin, The vesicant is selected and used AC, DCP to be Cross-linked agent, ZnO and Zn (st)₂ to be foaming assistant agent. When the mould pressing temperature 170℃, pressure under 8 MPa, dwell time 12 mins technological conditions. AC can decompose completely, foaming body density change is less, foaming body function change is other also less. The anti-static electricity making finally is polyethylene foam volume resistivity being lower than 10⁷O·m, Oxygen exponent greater than 30, Shao hardness is in 20-40 between, density is 0.02-0.1 g/cm³. The dosage Mg(OH)₂ effect such as stretching an intensity, tearing an intensity apart to LDPE bipeltate are not big, But, system density, the hardness with Mg(OH)₂ dosage increasing by rise. elongation rate , permanent functions such as deformable, pounding springback rate come down with that rising...