How to figure out the stock portfolio of blowing real estate agents for XPS production
In my own previous how to we discussed how to configure your XPS production line. Today, I will let you know something about how exactly to figure out the portfolio from the blowing realtors for XPS production. I will discuss from 4 aspects, local regulation, source availability, regional insulation regular, and technical issues.
First of all, local regulation, probably the most well-known blowing agent of XPS is Freon, some halocarbon including CFCs, HFCs and hcfcs. Every national country provides its own regulations about the usage of Freon. In most developed countries, HCFC now is banned, while in a few developing countries like China, still can use it until 2030, Indonesia may use it until 2040. But many countries are undertaking the new plan to increase the phasing out plan of HCFCs. One thing I must address is that because of the poor solubility in polystyrene, CO2 can't be used as blowing agent by itself; it must be used with other co-blowing agent like ethanol together, butane or DME etc. as solvent to greatly help CO2 solve in to the polystyrene.
Secondly, source availability. In some national plastic film extrusion countries, some forms of blowing providers are not available. For instance, in a few Middle East countries, ethanol isn't available rather than permitted to import, which means you have to use something else to become alternatives. And in some countries, hFCs are not available and not allowed to make use of actually, aside from HCFCs. You have to consult with your expert to start to see the source availability.
Finally, local insulation standard. Nearly every national country has its standard of thermal conductivity of XPS panel. Let's take China; the China nationwide regular of thermal conductivity of XPS is certainly 0.030. Alternatively, some countries don't use thermal conductivity because the standard; they make use of thermal resistance value or R worth instead. But so how exactly does the standard has something to do with your recipe of blowing agent? Associated with that using different blowing agent can lead to different thermal conductivity. For example, by using HFCs or HCFCs, it is possible to control the lambda worth below 0.029. However if you use CO2 plus ethanol, it really is hard to help make the lambda value under than 0.033. To get the lambda value below 0.030, some ongoing companies are employing the combination of HFC, Ethanol and co2.
The final issue, I'd like to talk about is the relationship between thickness, hardness as well as the recipe of blowing agent. Using HFCs or HCFCs is easier to obtain thickness like 15cm. If you use CO2 alone as the primary blowing agent, it might be very hard to get such thickness unless your line can produce 1.5 ton each hour. But CO2 is certainly advisable if you produce high compressive strength board like 1000kpa for particular use, because CO2 has smaller cell volume which is helpful to obtain finer cell framework of the board.