Re: Uhmw-Pe Lining
Could you explain how a liner prevents spontaneous combustion?
I would have assumed that adding a liner of this type would have reduced the thermal losses through the vessel wall and hence made spontaneous combustion more likely?
Do you mean that if the vessel is borderline between mass flow and core flow thie liner may push it into mass flow and hence avoid stagnant areas?
Am I right to assume that if the liner doesn't change the flow regime of the stored material, adding the liner will make spontaneous combustion more likely? ■
Re: Uhmw-Pe Lining
I think spontaneous combustion is reduced due to reduced risk of electrostatic discharges. ■
Re: Uhmw-Pe Lining
I don't believe that electrostatics are relevant to this one, isn't spontaneous combustion normally considered to be biological / chemical activity which takes place inside the mass of stored product causing local overheating, smouldering and then combustion. It is normally related to time, temperature and moisture content.
As an aside, isn't the risk of electrostatic discharges increased? Assuming the vessel you are fitting the lining to is conductive, you would be putting an insulating liner inside which would allow the material to build up a greater static charge. For materials with an MIE of 25 mJ, BS5958 indicated you were safe from static ignition in a vessel of 65 cum if it was metal or conductive but only 5 cum if it was made from high resistance material. ■
Re: Uhmw-Pe Lining
UHMW Polyethylene liners can perform very well in some situations. That is in no doubt.
However, as with all wear materials, this must not be seen as a cure-all.
Field experience and laboratory tests that I have witnessed show that this material performs very well up to critical abrasive stress level and then it fails.
I have seen it applied to the underpans of iron ore screens on three different sites, at different times, and it failed rapidly each time.
On a timber handling conveyor, the performance has been extremely impressive.
With wear materials, nothing fixes all problems. ■
Re: Uhmw-Pe Lining
Electro Static Dissipative UHMW liners are available in the market if required.
As a general rule of thumb polymer liners should be used against abrasive wear i.e. sliding of material, and are useless against erosive wear. Hence they don’t perform against materials like iron ore or glass etc. ■
Re: Uhmw-Pe Lining
Originally posted by RPD
isn't spontaneous combustion normally considered to be biological / chemical activity which takes place inside the mass of stored product causing local overheating, smouldering and then combustion. It is normally related to time, temperature and moisture content.
Thats what I thought, am I wrong? ■
Spontaneous Combustion About Uhmw-Pe
It 's amazing to see so many of you get interested in UHMW-PE material.
It is no doubt that lining made in UHMW-PE prevents spontaneous combustion,we are supplying 350 mm wide,12mm thick crosslink sheet,and soon,we are able to supply 2000 mm wide,7mm thick crosslink sheet.
Pay attention to us:www.fronticorp.com ■
Re: Spontaneous Combustion About Uhmw-Pe
Originally posted by Efighter
It 's amazing to see so many of you get interested in UHMW-PE material.
I think what we are really interested in is how UHMW-PE prevents spontaneous combustion.
Rather than a bold statement, can you give an explanation of HOW UHMW-PE prevents spontaneous combustion? ■
Re: Uhmw-Pe Lining
We swing in with some Flame Retardant to prevent spontaneous combustion ,though it reduce other charecteristics of UHMW-PE .
We are trying our best to make this material more suitable for
lining. ■
Re: Uhmw-Pe Lining
Sorry, not very bright today.
How does adding flame retardant to the UHMW-PE lining material prevent spontaneous combustion of the stored bulk material? ■
Uhmw-Pe Prevent Spontaneous Combustion
Dear all.
Good news!
We have researched out injection molding grade UHMW-PE prevent spontaneous combustion.It won't combustion after igniting ten seconds.Besides,It is antistatic.
Best regards
Sharon ■
Re: Uhmw-Pe Lining
All is now clear.
The use of the phrase "spontaneous combustion" is incorrect and it's use refers to the UHMW PE not the stored material. (Must admit I've never come across UHMW spontaneously combusting)
What is being refered to is making the UHMW PE flame/fire resistant. ■
Re: Uhmw-Pe Lining
Sorry, but I think you have misunderstod what "spontaneous combustion" is.
Your material may be "non-cumbustible" (i.e. it will not burn) but that does not mean it "prevents spontaneous combustion".
See the previous comments for a description of what spontaneous combustion is. ■
Uhmw-Pe Used In Mining
Maybe what I say is puzzling.Only I want to express is : our UHMW-PE with flame retardant won't fire after igniting ten seconds.
Our customer used them in the coal mine industry.And the finished product has passed the CCC (China Compulsory Certification). ■
UHMW-PE Lining
UHMW (Ultra High Molecular Weight Polyethylene ) lining prevents sticking, freezing and spontaneous combustion. It has been successfully used by WIDCO ( Washington Irrigation and Development Company ), Texas lignite mines, Florida phosphate mines and in coal bins, silos and truck beds.
Frontier Technology Group provides UHMW-PE sheet . Please feel free to visit our website.UHMW-PE Linings Highlights:
•Extra Slick from added silicone in every sheet
•Bright color for high visibility—even in bad weather
•High abrasion resistance—every sheet crosslinked
•High impact strength—no stress cracking, breaking
•Ultra Violet Stabilized—every sheet weathers well
For more information, please visit:
https://edir.bulk-online.com/oldedirredirect/204722.htm
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