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⚗ Polymers Forum - discussions about the science and properties of polymers (plastics) . This forums is a Web, Mobile and Social Media interface to sci.polymers.
There are 3408 articles in 1060 discussions. See the most recent and the best rated articles in ⚗ Polymers Forum

The most recent discussions

Please Help... Polishing Polyethylene

May 17, 2017, 1:50 am

I know it sounds weird. I've got a polythene bodied RC car. I use elbow grease and plain white toothpaste. No, really, give it a go once you're down to the fine scratch stage. Read more »

Starlite flameproof plastic?

March 2, 2017, 8:43 am

Try this website I found, you don't have to read all of it but just scan it for key points and make sure to read the last paragraph Here's the link: What happened to `starlite', a material with se... Read more »

Fish scale pattern on catheter

February 8, 2017, 12:35 am

Hi all, I am having issues when reflowing a catheter using a 40D resin pebax segment. It is presenting a fish scale effect defect, these are little flashes in a regular pattern. Materials are PTFE in... Read more »

PMMA and Silicon oil

December 31, 2016, 6:25 pm

can any one please suggest PMMA and silicon oil common solvents benzene i know but i want other than benzene please suggest.. Read more »

How would you identify a polymer that coated ones entire body and hair?

December 21, 2015, 7:47 pm

This polymer becomes adhesive when barely warmed. It has also been ingested and inhaled.Also, how, over time would it have been applied to cover the entire body? Lastly, where would one go to find ... Read more »

How to increase mfi of a filler master batch

December 9, 2015, 5:26 pm

I would like to know how to increase mfi of a filler master batch compound Base resin Lldpe Read more »

Help for extrusion flow problem

September 7, 2015, 8:51 pm

Hello Im new into extrusion and need some help Om extruding pe with a self made extruder i have lots of hdpe and few ldpe my need is a soft flexible end product is there a way to make hdpe as soft a... Read more »

How to remove cement from plastic

July 11, 2015, 5:51 pm

Please how do I remove cement from plastic windows Read more »

Need help finding the right urethane

January 7, 2015, 8:30 pm

I'm trying to find a cast-able urethane that is: 1) FDA biocompatible (iec 10993) for skin contact 2) RoHS compliant (no mercury) 3) compatible with hydrogen peroxide (30%) solution. Could someo... Read more »

Instron Bluehill2 software demo or Time limited version

December 9, 2014, 4:04 am

Hi all I am looking for a demo or time limited version of an Instron software to run under any version of windows for controlling our Instron 4400 to give it a try. Any help will be appreciated. Plea... Read more »

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The best rated discussions

polymers: calculate degree of crystallinity? rating: 5

polymers: calculate degree of crystallinity? in [1[2,3]] an equation for quiscent crystallisation kinetics, calculating material derivative or relative degree of crystallisation is given: (1*) (D/Dt... Read more »

soft airtight material? rating: 5

Is there such a thing as a soft airtight material that does not leak over time so it could be used as cushioning in a boot cuff? Is there any example of a soft airtight material used in a manufactur... Read more »

How to remove cement from plastic rating: 5

Please how do I remove cement from plastic windows Read more »

Shock/impact absorbing materials? rating: 5

I've seen demonstrations of both d3o (http://www.d3o.com/) and Sorbothane (http://www.sorbothane.com/). Unfortunately, d3o is not available to the general public in sheets, and sorbothane sheets are... Read more »

inner diameter tube polyurethane coating rating: 5

hello! i would like to get some advice on what type of resin should i choose. i want to make a resin coating on the inner diameter of a tube. The way the coating will be made is the following. Firs... Read more »

PP and LDPE blend rating: 5

Hi, I would like to know if I blend PP and LDPE for extrusion. What is maxium percentage of LDPE can be used? and I heard that i need to add random copolymer PP in PP and LDPE blend to help the mis... Read more »

DSC and pvT data for PMMA and PA12 rating: 5

Hi I am conducting a transient thermal solution for plastic materials for which I need specific heat, conductivity and density data for these materials as functions of temperature (room temp to melt ... Read more »

Possible to shrink expanded O-rings rating: 4.67

Hi, I have four tiny but very expensive O-rings used for dust scraping around pistons in motorcycle brake calipers. Thay have expanded due to an oil leakage and I hope that it's possible to shrink th... Read more »

What is Melt tension(strength) in PE, PP rating: 4.67

Hello, everyone I don't know the meaning of melt tension(strength) in polymer, especially PE, PP. I would like to know what melt tension is and why it is measured in PE, PP processing. please teach m... Read more »

Is the HARDENED epoxy toxic? rating: 4.5

Hello! A short question only. Everyone says that epoxy is toxic and carcinogens, but when they state that, they think of NOT hardened epoxy. And what about the hardened epoxy? Is that toxic and carci... Read more »

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