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.PMI 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
China PMI foam,
+ نوشته شده در پنجشنبه 18 دی 1399 ساعت: 12:38 توسط radomfoam
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There is no economical industrial production method. In recent years, due to the increase of explosions and terrorist attacks, foam aluminum sandwich panels have gradually gained attention as building explosion-proof materials. In view of the above reasons, the core material foam is used in construction explosion-proof engineering The application in practice still has a long way to go. The results show that the new type of protective door has a good attenuation performance against explosion shock waves and can play a protective role.
The quantitative relationship between the microstructure and the macroscopic constitutive structure of the sandwich panel material has not been established, and the response of the sandwich panel under dynamic load is not clear. The impact of anti-explosion performance. According to the anti-explosive effect of the cascell core material foamed plastic board, the front and back of the door The steel plate is filled with foam to make a new type of protective door, and ANSYS/LS-DYNA is used to verify the explosion-proof effect of the protective door. The higher cost limits the application range of the sandwich panel.
The results show that the core material foamed plastic beam made of industrial pure aluminum panels has better explosion-proof performance under the impact of explosion. Problems in application The core material foamed plastic board has excellent anti-explosion function, but it is still less used in building explosion-proof. 553 Core material foam, core material foam manufacturer, core material foam price The correct use method of foam bridge core mold application of high temperature resistant foam aluminum material.Core material foam plastic '
The application of core material foam plastic board in building explosion-proof: core material foam plastic board can absorb energy through plastic deformation under explosion or strong impact load. Compared with single-layer board, it has higher Quasi-static strength and high anti-explosion performance. The main reasons are the following two aspects: First, the core material foamed plastic board material is still in the research stage. Furthermore, the explosion-proof mechanism of the foam core material is still It is not completely clear.
The same foam aluminum core material is used to compare industrial pure aluminum panels and 304 stainless steel panels. 1. The production cost of the foam itself is relatively high, and the sandwich panel needs to increase the cost. Application research in building explosion-proof steel plate aluminum foam The multi-layer composite structure has better explosion-proof effect than a single foam aluminum and can be used in the explosion-proof design of military buildings
cascell ,
+ نوشته شده در جمعه 5 دی 1399 ساعت: 13:14 توسط radomfoam
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