Composites Central


Reply
Old 01-15-2011, 11:28 AM   #1
Roo

Forum Donor
Member
 
Roo's Avatar
 
Join Date: Nov 2010
Location: Lake Orion, MI
Posts: 60
Thanks: 4
Thanked 2 Times in 1 Post



Default PVA Shelf Life

I have a gallon of PVA sitting on the shelf at home... opened it and only used maybe a quarts worth, if that.

Been sitting maybe 2 to 3 years.

Good to use or buy a fresh gallon?

(please, no "why are you using PVA comments)

-Andrew
Roo is offline   Reply With Quote
Old 01-15-2011, 01:23 PM   #2
kmt63

Member
 
Join Date: Mar 2010
Location: washignton usa
Posts: 106
Thanks: 0
Thanked 5 Times in 5 Posts



Default

i have used pva that has sat around for over a year.you could test it by spraying some on a piece of aluminum.let cure.check to see if it peels off.then hold it up to the light.if you cant see pin holes in it.then i would say its fine.
kmt63 is offline   Reply With Quote
The Following User Says Thank You to kmt63 For This Useful Post:
Roo (01-15-2011)
Old 01-15-2011, 10:05 PM   #3
canyon

Administrator
Site Admin
Composites Expert
 
Join Date: Jan 2010
Location: Orange/La County
Posts: 1,243
Thanks: 57
Thanked 98 Times in 70 Posts



Default

When I first started with composites I was given half a quart of PVA that must have been at least 2 years old and it worked fine (that is once I figured out how to use it). It was stored at consistent temp in a dark closet though.
__________________
Someday I'll be a pro. But today I'm getting there one step at at time.
canyon is offline   Reply With Quote
Old 01-16-2011, 05:49 AM   #4
riff42

Composites Expert
 
Join Date: Oct 2003
Location: Uni. of Delaware.
Posts: 2,112
Thanks: 5
Thanked 99 Times in 84 Posts



Default

Not sure that PVA is mixed with....water or alcohol....but you can prob' thin it down if it gets thick. I have some PVA pellets at work that I mix with water.....so I can imagine that a PVA solution can just be rehydrated.
__________________
---
I want my last words to be:
"Hey, this is fun!"
riff42 is offline   Reply With Quote
Reply

Bookmarks

Tags
life, pva, shelf

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -8. The time now is 01:46 AM.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Inactive Reminders By Icora Web Design