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Yes it does, we tried to mix the compound without the ZDEC and the products no longer have white migration on them... It affects the hardness tho, so we had to adjust the N-550 quantity to get the hardness.

Dear all, I hope i will get your help with my problem. We`ve been using PERKACIT ZDEC in our EPDM compounds since ever. When we started using the last batch we noticed that the vulcanized products started having some white chemical migration and during time this migration increases and forms...

Yes we know that the oil resistance is reduced - but this was not very important for the final product in our case, tests have been made and the results were ok. Thanks for the tip.

We have had similar problem with the NBR - we solved it with changing the base polymer - instead of PERBUNAN 3345 we used KRYNAC 2850 and the results were surprisingly good.

Thanks a lot - luckily our compound showed great results on injection molding.

Hi there, We are new in the injection molding technology. Our experience in compression molding is big and resourceful but when it comes to injection molding we are at the beginning. So i would like to now if anyone can recommend me some good literature or course for compounding of the rubber...

In my experience natural rubber itself has the best adhesion to metal surfaces from all the rubbers. I suggest you try following: - clean the metal surface with sandblasting if it`s steel, or burn it if it`s brass. Allow the metal to cool down before applying adhesive. - the vulcanisation can be...

Dear, Is the metal properly cleaned before applying bonding agent?

We tried all different speeds and that did not solve the problem. It must have some problem in the compounding...

Dears, We are developing a soft rubber compound for covering rubber rollers used in printing industry. The rubber compound we got is 25-30 shA hardness but we have some problem with the surface we got after grinding the roller-it is not smooth enough. I will be grateful if someone has any...

Hi there, We are issuing a problem in compounding the SBR 1712C instead of SBR 1712 HI-AR. The final products crack very easy and the raw rubber material is much more rough. Any suggestion about solving this problem?

Hi there, We are issuing a problem in compounding the SBR 1712C instead of SBR 1712 HI-AR. The final products crack very easy and the raw rubber material is much more rough. Any suggestion about solving this problem?

Thank you very much, This was useful. Can you tell me if there is some book or other material avaliable online about rubber production procesing? I am having some but i want more for my research. Thank you very much

Hi, I am having a research about raw rubber materials and i hope that someone could give me some link to a reliable website that follows the ups and downs in rubber raw material prices. Thank you

Thanks. I know that is very old and not made any longer, but i hope that i`ll find sth to fix it.

dears, Can you please advise me where to search temperature controller for rheometer R100S? the picture of it is attached. Thanks http://files.engineering.com/getfile.aspx?folder=8014c083-c4fc-4cd6-a959-3f4dfdcd4598&file=20141007_073840.jpg

dears, Can you please advise me where to search temperature controller for rheometer R100S? the picture of it is attached. Thankshttp://files.engineering.com/getfile.aspx?folder=e13279da-141d-44d5-8701-b00ed900067a&file=20141007_073840.jpg

Hi Tom, Thanks for your answer. We`ve made a research and now we cure the rollers under bigger pressure in autoclave, and with bigger wrap pressure and they don`t have porosity, but from time to time holes are appearing as a trapped air and the wrapping tape is cutting the rubber during...

Hi there, We are working with rollers and recently we came at a problem. The rollers that we cover with oil resistant rubber with hardness from 35-45 shA came out from the autoclave with holes and the rubber was porous. We vulcanized them at the temperature 125*C and pressure around 2atm for...