Lexan Plastic-What Solvent to use in Gluing
ger...@wwa.com
(shown in his Table Saw book and video). Have a piece of Lexan
XL for the safety guard, but don't know what solvent to use in
gluing pieces up. Can anyone help?? The Lexan is made by GE
(bringin good things to life)-does anyone have a customer service #
for their plastics division I can call??
Gerry Mucha
Steve Worcester
You can use regular superglues, or use what I do is buy the glue made
for Lexan (polycarbonate) If the store where you bought it doesn't
have it, look in the Yellow Pages (finger walkin') for a plastic
dealer, shouldn't be too hard to find....
- Steve
Chris Paris
while ago. They sent me methylene chloride, which is also one of the
solvents that can be used to bond acrylic. I've used this stuff on
acrylic, but haven't gotten to the bonding part of my Lexan project,
so I can't tell you how well it works on Lexan.
--
Chris Paris <ca...@cmu.edu> Support censorship -- go to CMU
For information see http://www.cs.cmu.edu/Web/People/kcf/censor/
luka...@vsd.clc.gmeds.com
>I'm building Kelly Mehler's crosscutting jig for my table saw
>(shown in his Table Saw book and video). Have a piece of Lexan
>XL for the safety guard, but don't know what solvent to use in
>gluing pieces up. Can anyone help?? The Lexan is made by GE
>(bringin good things to life)-does anyone have a customer service #
>for their plastics division I can call??
I purchased solvent adhesive for polycarbonate from the plastics company where
I got the plastic. Cyanoacrylate glue was recommended as an "excellent"
adhesive for polycarbonate by one of our plastic suppliers here at GM.
--
Keith Lukaszek luka...@clc.vsd.gmeds.com
Dave Castiglione
alliphatic hydrocarbons (most namely methylene chloride). The technique is to
moisten a rag with the solvent thoroughly and dab or wipe it on the surfaces
you want to join and quickly putting them together. You want the Lexan to
still be damp with solvent when they contact. Clamp carefully, and let sit for
a few minutes.
*** The only hitch with this (and it's a biggie) is that methylene chloride and
all similar solvents (chloroform, Carbon tetrachloride, etc) are rather nasty
so I would only do this in a fume hood, wearing solvent-impermeable gloves,
goggles and your asbestos underwear ;-). I've done it before, but only in a
laboratory under the conditions noted...
The solvent works by slightly disolving the polymer and welding it together as
it dries. Methylene Chloride is one of the solvents that polycarbonates are
processed in, which is why it work so well.
If I were you I'd use the cyanoacrylate mentioned above, but you _DID_ ask
about solvent welding...
--
Dave Castiglione (dmcast...@mmm.com)
Erick Borbons
writes:
solvent bonding many plastics, i.e. acrylic, acrylonitrilebutadiene
styrene, high impact styrene, and other thermoplastics, but they are
also extremely hygroscopic. Polycarbonate (Lexan) has an inherent
water content, which can interfere with the bonding (crosslinking)
process, resulting in an extremely weak bond. An alternate solvent is
tetrahydrofuran, a component in PVC cement, applied with a hypo
applicator, and allowed to cure for 24 to 48 hours. I've built many
protective guards/shields on a professional basis without problems.
I've also been using methylene chloride on a daily basis, and it hasn't
affected me affected me hardly at all:)
Erick
Eric Randal Sooy
>>Guys, Guys, Guys,...Chlorinated aliphatic hydrocarbons are fine for
>>solvent bonding many plastics, i.e. acrylic, acrylonitrilebutadiene
>>styrene, high impact styrene, and other thermoplastics, but they are
>>also extremely hygroscopic. Polycarbonate (Lexan) has an inherent
>>water content, which can interfere with the bonding (crosslinking)
>>process, resulting in an extremely weak bond. An alternate solvent is
>>tetrahydrofuran, a component in PVC cement, applied with a hypo
>>applicator, and allowed to cure for 24 to 48 hours. I've built many
>>protective guards/shields on a professional basis without problems.
>>I've also been using methylene chloride on a daily basis, and it hasn't
>>affected me affected me hardly at all:)
>>Erick
>
>worked there :-) I'm sure THF works fine, though I haven't tried it, but I
>know CH2Cl2 works quite well. If water uptake is your concern, stick it in an
>oven at 200 deg F or less for a couple of hours before working it. One nit to
>pick: polycarbonate is a thermoplastic and NEVER crosslinks in any manner. The
>bonding process is simply putting the ends of surface polymer chains into
>solution, re-entangling them with chains in the other piece and removing the
>solvent to lock everything in place. Really it's a mechanical process at the
>molecular level.
I have some interest in this thread. Could someone please tell me what
this stuff is in ENGLISH. Like: CH2C12 and THF (is that simply PVC
cement?), and methylene chloride. Where do you get this goop??
--
Eric R. Sooy | es...@bgnet.bgsu.edu
Instructor of Percussion, BGSU | in...@blackswamp.com
Master Designer, Black Swamp Percussion | http://www.blackswamp.com/bswamp
vanderdu...@gmail.com
I spaced the joint with 0.01" Pt wire spacer and used a 20cc syringe with a 24 gauge needle with the point ground off. Squirt the solution in the joint and let the surfaces soak for a minute or two (60- 120 seconds). Then pull the spacers out and clamp it up.
whit3rd
> I have some interest in this thread. Could someone please tell me what
> this stuff is in ENGLISH. Like: CH2C12 and THF (is that simply PVC
> cement?), and methylene chloride. Where do you get this goop??
chloride aka 'paint stripper', 'carburetor cleaner'. And getting the goop
is easy at a plastics supplier
<http://www.tapplastics.com/product/repair_products/plastic_adhesives/weld_on_4_cement/465>
but difficult otherwise, because it's nasty stuff (and shipping regulations and restrictions
apply). Adhesives manufacturers are notoriously stingy about disclosing the composition
of their goods, and aren't going to offer any descriptions in plain English.
John McCoy
> wrote:
On Saturday, April 30, 2016, whit3rd <whi...@gmail.com> wrote in
news:dd11f2db-c156-4ef0...@googlegroups.com:
<an answer>
21 years! Is this a new record for a late response to a question?
John