Need Help!- Bonding Gray PVC (Type-I)

[PVC]

I've been using IPS Weld-on 3 for acrylic bonding and was told (by IPS) that I could use Weld On 16 to bond acrylic to PVC and PVC to PVC. So I did a test joint, and it didn't turn out so hot. I was able to break the bond rather easily 24 hours later. Admittedly, I didn't clamp it for very long, and handled it a little bit, but it definitely did not fuse to the PVC at all, the glue was easily flaked/scraped off. The glue on the acrylic side was fused/welded, so it definitely works for welding the acrylic.

After doing some reading on IPS's site, it became clear that I need to use something else for bonding PVC to itself and/or acrylic. It looks like these are my options:

Weld-On 2007: "WELD-ON 2007 is formulated for rigid vinyl, and foamed PVC to themselves and to each other."

"let the two surfaces be in gentle contact for a few seconds to allow the cement to soften the dry surface"
I think this is what I want - I want the PVC to be 'melted' and then re-solidize (is that a word??)
http://www.ipscorp.com/pdf/assembly/...2007_Jul02.pdf

Weld-On 1802: "WELD-ON® 1802™ is formulated to bond acrylic (poly-methyl methacrylate), ABS, cellulose acetate butyrate, rigid PVC, and polystyrene to themselves and to each other."
http://www.ipscorp.com/pdf/assembly/...1802_Apr08.pdf

Weld-On 1001: "WELD-ON® 1001™ is formulated for bonding a wide variety of plastics such as vinyl, rigid PVC, flexible PVC, foamed PVC, ABS, and non-plastics to themselves and each other"
http://www.ipscorp.com/pdf/assembly/...1001_Sep08.pdf

There's dozens to choose from. I need an adhesive that will be able to hold solid and watertight, and not break apart. So Acrylic welding softens and makes the piece one. I need something that does the same for PVC to PVC and for PVC-Acrylic.

[RomanLini]

Electricians use a "PVC conduit jointing glue" that is a solvent and PVC mix (to make it thick like honey).

It "welds" the PVC together very well and makes the conduit tubing watertight. It's cheap and available from electrical suppliers and large hardware stores. However it may have a colour dye added.

[PVC]

I should have clarified, I have used PVC cement many, many times, in plumbing applications, so I am aware of that capability.

This is different - I am trying to bond 1/4" sheet PVC at a perpendicular to sheet PVC or clear/black acrylic.

I tried also using the PVC cement for pipe fitting and the bond didn't seem to be any better. That is why I am looking for a special cement that does something similar to what Weld-On for acylic does, actually melts or liquidizes the PVC and then it becomes one piece.

[mactec54]

PVC

Two very different meterials, I don't think It's going to get any better with glue, than what you have tryed, You may be able to ultrasonic weld the 2 meterials, I don't think anything else will do it, ABS to Acrlic can be ultrasonic welded

Polymer materials for ultrasonic plastic welding | PowerUltrasonics

They say that this one will work but I think you will have the same problem

[PVC]

That sounds ideal, but not readily available to do by myself or at low cost. But thanks for the link!

I am hoping that someone on this site works with flat sheet PVC Type-I and can help. I can look at the IPS site all day and find a dozen products that say they work, but I won't really know until I try each one.

I might try calling them again and talking to a technician. The person I spoke with was probably just looking at a data sheet that I could have pulled up myself!

[PVC]

A fabricator in Florida I spoke to this morning said to use Weld On 2007 for PVC to PVC, which is water-thin like #3. He also told me to mix 16 and 2007 for PVC to Acrylic. IPS told me flat out "No, don't do that".

The IPS guys concurred that 2007 will do for PVC to PVC, and still recommended #16 for Acrylic to PVC.

After searching some more, I talked to Ridout Plastics and I think I got the answer I needed. They said that 2-part Weld-On 40 is used for repairing and making acrylic aquariums and that it has extremely high bond strength, and it will work for PVC to Acrylic as well.

Does anyone see any issues using Weld-On 40 in this manner?

It seems like 2007 would do, but 40 has 3.5 times the bond strength. Plus, I will be using it in a wet application, so making a watertight joint is critical.

[dandy7200]

4052 works really well for pvc-acrylic bond.