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Recent content by Beorges

  1. Beorges

    Rubber Selection

    Similar to compression, is transfer, could give you a little bit more precision, a multi cavities
  2. Beorges

    Help on Holes on polyurethane film

    Team we are working on the making of polyurethane rubber, injected molded in the form of pads. but we have started seen some holes very small after molding, we clean the mold and there is no dirt, temperatures and presure have been remain the same. What can be causing this aside processing...
  3. Beorges

    Undercure Rubber - Molding Tool

    I working to troubleshoot an Undercure NR Oring with Injection Molding, Any suggestion on potential root cause with the Mold Tool Sprue, Gates, Cold deck. From what i read, mostly this issue is caused by process parameters (Time Pressure Temp), or compounding. But what about the tool...
  4. Beorges

    Reclaim rubber testing

    You may want to take a look to ASTM D 5603-01 is widely used as a QA for ASTM Standard Classification for Rubber Compounding Materials--Recycled Vulcanizate Particulate Rubber
  5. Beorges

    HELP on Elemental Sulfur

    Team im trying to find out what would be the Effect of Gamma Sterilization on the content of Elemental (FREE) sulfur, with a NR formulation using sulfur as a curing agent. From my understanding the Gamma will continue the crosslink, and it is expected to have consume more of the sulfur, But...
  6. Beorges

    HELP plastic cracking/breaking HELP

    Team I'm a rubber eng, but i have to do an analysis on a plastic cracking/breaking The FTIR concludes the presence of an Oil similar to Castor Oil or Tall Oil. There is a plastic casing an a wire wrapped comming inside of the casing. Any idea or where does it can came, Wire wrap, plastic...
  7. Beorges

    HELP, Plastic Cracks, FTIR results interp. HELP

    Team I'm a rubber eng, but i have to do an analysis on a plastic cracking/breaking The FTIR concludes the presence of an Oil similar to Castor Oil or Tall Oil. There is a plastic casing an a wire wrapped comming inside of the casing. Any idea or where does it can came, Wire wrap, plastic...
  8. Beorges

    Rubber Tilt Tangential Mixer

    Does anyone have an article on this kind of Mixers, i know that there was a publication of Rubber World July 2003 that speaks about it Regards
  9. Beorges

    Silicone to Metal Adhesion Force

    Hi im doing an over molding of Metal Pins, with Silicone, to isolate. Im having some issues due to the Silicone stripping off the metal pin. There is any ASTM Standard or Industry Standard, to measure the Adhesion Force of the Silicone and Metal ?
  10. Beorges

    polyurethane tackiness

    Team I had a molded very thin wall polyurethane rubber After the molding the parts are so sticky that I put them into a chlorine bath The problem is that after the wash the parts suffer from discoloration There is any alternative lubricant/coating to decrease this tackiness and stiffness ...
  11. Beorges

    DPG Accelerators being banned by REACH

    Thanks, seems that DPG is on the pre-registration list in REACH, just for in case, you know any replacement of this accelerator ?
  12. Beorges

    DPG Accelerators being banned by REACH

    Hi someone have news on the DPG Accerators (Guanides) being banned by the European Reach ? Any information on alternatives, dates would be highly apreciated

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