[TowerTalk] [Bulk] Re: Phillystran

[Grant Saviers]

Kevlar is very UV sensitive but essentially inert to water.  Large deep 
water anchoring jobs (think oil rigs) and technical/research instrument 
towing is done with Kevlar lines.

A concern about Phillystran is the water gets inside and freezes, 
damaging the cover, so do seal the ends.

Kevlar 49 is the fiber in Phillystran.  Everything you might want to 
know about K49 is at

http://www.dupont.com/content/dam/dupont/products-and-services/fabrics-fibers-and-nonwovens/fibers/documents/DPT_Kevlar_Technical_Guide_Revised.pdf

Grant KZ1W

On 3/17/2016 20:28 PM, Roger (K8RI) on TT wrote:
> Kevlar may be strong, but it is adversely affected by rain and UV.  
> Don't forget to seal the end caps.
>
> 73
>
> Roger (K8RI)
>
> Elements are rain, wind, fire, and earth. All that other stuff is just 
> made up.  Even the ancients knew that.
>
>
> On 3/17/2016 Thursday 6:16 PM, Patrick Greenlee wrote:
>> Uh, ya but heat will burn/melt the plastic jacket off of the 
>> Phillystran and then it is exposed to the elements.  Why do we call 
>> the environment the elements, anyway. What has Earth, Fire, Air, 
>> Water, and maybe phlogiston got to do with it?
>>
>> On 3/17/2016 4:50 PM, Spencer wrote:
>>> Real kevlar rope is fire resistant. I have side scan sonar cable 
>>> that a bernzomatic torch will not melt.
>>> The only way I can cut it is with a sharp hacksaw blade.
>>>
>>> Spencer W1GAK
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>