goldenshinner Posted June 17, 2016 Report Share Posted June 17, 2016 Curious if anyone cares to contribute..is it true heat stabilizer acts by preventing free radicals chain reaction..much like adding absorbic acis(vitamin c).if so it will work for limited number of reheats and or only to such a point if an area got to hot its powr will be used up and plastic will show signs of damage. Quote Link to comment Share on other sites More sharing options...
JRammit Posted June 18, 2016 Report Share Posted June 18, 2016 I always wondered why they don't just mix heat stabilizer in the plastic before selling.... Kinda like buying your kid a toy, batteries not included Quote Link to comment Share on other sites More sharing options...
Roger Linnell Posted June 18, 2016 Report Share Posted June 18, 2016 I always wondered why they don't just mix heat stabilizer in the plastic before selling.... Kinda like buying your kid a toy, batteries not included tru dat Quote Link to comment Share on other sites More sharing options...
mark poulson Posted June 18, 2016 Report Share Posted June 18, 2016 I always wondered why they don't just mix heat stabilizer in the plastic before selling.... Kinda like buying your kid a toy, batteries not included I think I read somewhere here on TU that they actually do add it. Quote Link to comment Share on other sites More sharing options...
majic man Posted June 18, 2016 Report Share Posted June 18, 2016 Its in there. Some companies just like to sell you a bunch. Quote Link to comment Share on other sites More sharing options...
rayhorse Posted June 18, 2016 Report Share Posted June 18, 2016 It is in there, without heat stabilizer nothing works. Soft plastic get stained very fast. Quote Link to comment Share on other sites More sharing options...
Painter1 Posted June 18, 2016 Report Share Posted June 18, 2016 This my understanding of the chemistry, for what it's worth. I think it has more to do with compound & molecule separation than smaller particles like free radicals. Plastisol is made up of 3 components: Polyvinyl Chloride (same PVC pipe is made from) , Plasticizer, and Heat Stabilizer. There are a lot of different kinds of plasticizer and it's there to modify the PVC so it doesn't turn out as hard as pipe. During the cooking process the PVC compound splits, producing and separating the vinyl and the chloride. Without Heat Stabilizer the active chloride will (too) quickly re-bond with the vinyl causing the vinyl to discolor. So the heat stabilizer works by attaching to the chloride (technically the chloride salt) - a one time bonding process. To much stabilizer will produce oily, stinky & inconsistent plastic. There is only so much chloride it can attach to so excess floating around in the mix will make the product unstable. Reheating after the heat stabilizer is "used up" causes the rapid re-bonding of the vinyl & chloride, same as before, but the heat stabilizer is not available to slow things down. You may be able to add more but see the note about too much. Ultimately, and obviously, the vinyl and chloride must reattach, but in a different final structure. 4 Quote Link to comment Share on other sites More sharing options...
DaveMc1 Posted June 18, 2016 Report Share Posted June 18, 2016 This my understanding of the chemistry, for what it's worth. I think it has more to do with compound & molecule separation than smaller particles like free radicals. Plastisol is made up of 3 components: Polyvinyl Chloride (same PVC pipe is made from) , Plasticizer, and Heat Stabilizer. There are a lot of different kinds of plasticizer and it's there to modify the PVC so it doesn't turn out as hard as pipe. During the cooking process the PVC compound splits, producing and separating the vinyl and the chloride. Without Heat Stabilizer the active chloride will (too) quickly re-bond with the vinyl causing the vinyl to discolor. So the heat stabilizer works by attaching to the chloride (technically the chloride salt) - a one time bonding process. To much stabilizer will produce oily, stinky & inconsistent plastic. There is only so much chloride it can attach to so excess floating around in the mix will make the product unstable. Reheating after the heat stabilizer is "used up" causes the rapid re-bonding of the vinyl & chloride, same as before, but the heat stabilizer is not available to slow things down. You may be able to add more but see the note about too much. Ultimately, and obviously, the vinyl and chloride must reattach, but in a different final structure. From what I've been able to research, the ingredient list is a bit more involved but the same basic premise. Quote Link to comment Share on other sites More sharing options...
goldenshinner Posted June 19, 2016 Author Report Share Posted June 19, 2016 DaveMc... can you share what ever information...anything we would be interested in. please share. Quote Link to comment Share on other sites More sharing options...
DaveMc1 Posted June 19, 2016 Report Share Posted June 19, 2016 DaveMc... can you share what ever information...anything we would be interested in. please share. It's not my info to share. Quote Link to comment Share on other sites More sharing options...
goldenshinner Posted June 19, 2016 Author Report Share Posted June 19, 2016 im surprised how little scientific information is available on this subject in this country. im sure a fair amount of research is public, just not easily accessible to most people. dow corning and dupont probably have a bunch of information, and if you could read Japanese im sure it would be amazing compared to what is known in this country. Japanese have researched everything, and its well organized. but impossible to get in this country. Quote Link to comment Share on other sites More sharing options...
