Add foaming agent to the mixture
Times or even dozens of times. After cooling and hardening, the pores inside can be fixed. Production process:Plasticizer (tire powder, ammonium bicarbonate) and reinforcing agent (talc powder or lithopone powder) are mixed evenly. 5.ufeffPMI foam'>Is the PMI foam insulation board good for heat insulation? In the plastic molding process, when some gas is added or some foaming agent is added, a large number of bubbles can be generated, which makes the volume of the plastic suddenly expand.
Dissolving raw materials: dissolve waste foam, toothbrushes, combs, buttons and other materials Add the mixed organic solvent (acetone, toluene) to dissolve the PMI foam under agitation (benzene can also be used instead) to make it a plastic mixture. Heating and foaming: Put the stainless mold into a water bath at about 95℃ and heat for 4N6 minutes, a lot of bubbles will be produced, and the polystyrene will expand rapidly like 'fermentation' After reaching a certain volume (expandable 4-6 times), immediately put the mold into cold water to cool down rapidly to shape the plastic board.
The solvent evaporates until it becomes dry and hardened. It becomes a light, soft and porous foam plastic board. Molding: Pour the resulting mixed slurry (paste) into a stainless steel mold and place it in a ventilated place. Mixing: Add foaming agent to the mixture.
Shape and flatten: During the heating and foaming process of PMI foam, the foam volume should be expanded Cover (made of stainless steel) when it reaches 4 times, so that China PMI foam both the upper and lower sides of the heat insulation board are smooth and beautiful. 523 PMI foam, PMI foam manufacturer, PMI foam price What is the raw material of PMI foam? Is the foam sealant high temperature resistant?. 2. 4
