Latest revision as of 02:37, 9 August 2021

Problem Statement

Gluing rubber, such as EPDM.
Contact cement works on EPDM - [1]. Customer says this is 'closest to ideal' for EPDM on metal [2]
DAP 234 is essentially toluene, hexane, acetone with some dissolved rubber.
Dissolved rubber is polychlorinated rubber, the thing of rubber paint [3]
What is solvent of rubber paint? Toluene and xylene - [4]
Dissolved rubber - LionGuard [5] - for EPDM it's dissolved neoprene, in aromatics and ketone? Yes, same as DAP 123 (aromatics + acetone ketone).

Structural acrylic glues work - Permabond TA4605 and Permabond TA4610 structural acrylic adhesives - [6]

Wikipedia - CA -
Does not work well because it will stick, but contraction will easily break the glue - [7]
- -> Use rubbery (Styrene Butadiene Latex) solvent glues. Solvents soften the EPDM, styrene butadiene bonds.

EPDM is not neoprene [14]
Latex bonding agents - [15]. Latex is polymer particles in water.
- Styrene Butadiene Latex (SBL). See difference between Styrene Butadiene Rubber and Styrene Butadiene Latex [16]. Sourcing - [17] - 30% by weight SBL. 150-250 sf coverage. Can be used as primer for glue? Data Sheet - [18]. Sourcing - [19]
- Polyvinyl Acetate Latex
- Acrylic Latex. Ex - MAPEI [20], cement additive - [21]
Polyvinyl acetate is wood glue, Elmer's glue [22]
What is plastidip made of? Sorry sucka, that's secret. [23]

@@ Line 17: / Line 17: @@
 =Sourcing=
+*Menards - $150 - [https://www.menards.com/main/building-materials/roofing/low-slope-roofing/epdm-rubber-roofing-contact-adhesive-5-gallon/7-1502611-1/p-1444444064529.htm]
 *5 gallons, $121 - 60 sf/gal - is this really CA glue? [https://www.bestmaterials.com/detail.aspx?ID=19595]. $71 shipping.
 *5 gal, 60 CA Adhesive, $250 - [https://pack-n-tape.com/3M-60CA-Scotch-Weld-General-Purpose-60-CA-Adhesive-Clear-5-gal-Pail-1-per-case-Bulk-NOT-FOR-CONSUMER-RETAIL-SALE-OR-USE.html?gclid=CjwKCAjw6fCCBhBNEiwAem5SO4N3BMPGhmQCbzInkElI55_-qYKAwsnUz-ezVLNz5hCuuvVwtvuM1RoCzW4QAvD_BwE#product-details-tab-specification]