How To Remove 3m 4200
Popular theory in boat repair is that the 3M adhesive chosen 5200 can create a bond stronger than the materials information technology bonds, and it can't exist unbonded. But is information technology truthful? We constitute one product that the maker claims can "DeBond" 5200.
The pop polyurethane adhesive 5200 has competitors under different brands, but polyurethane is the most-reached-for goo in boatyards and factories when it's time to mount cleats, through-hull fittings and synthetic teak products, and fifty-fifty join the hull to deck. No wonder. Polyurethane adhesive cures tough and flexible. It sticks to wood, metal, fiberglass and, if you let it cure long enough, your skin also. Fabrics accept been repaired with it, and the best-congenital boats take pounds of it in various places. Its curing procedure is days long just, curiously, faster when in contact with h2o, making it ideal for through-hull fittings.
Simply if yous desire to disengage it, polyurethane is demonic, insidious and tenacious. Bonded deck cleats are then hard to remove that it isn't unusual to remove gelcoat with them. And so I was startled to hear there's a production that tin can disassemble 5200 seams and joints. The gauntlet was thrown downwards to BoatingLAB, and we ready virtually to create a test, pitting DeBond confronting acetone, denatured alcohol and MEK solvents commonly used in paint and fiberglass shops.
Functioning Report
This is a unique chemical compound with a short story that began when its originator needed to unfasten a boat function secured with 5200. Per its safe data sail (SDS), the product is a combination of iv compounds: methoxypropoxypropyl acetate (a solvent used in ink and paint), nonylphenol ethoxylate (a surfactant used in detergent), and citrus terpene and limonene (compounds plant in citrus peels). Terpene is besides a form of vitamin A, and some chemists don't distinguish between terpene and limonene, which are commonly used as organic degreasers. They are flammable, which is why twisting a lemon peel over a candle creates a tiny burn down bear witness, only in the order of nasty solvents, this combination barely hits the danger scale when compared to those that follow. These latter chemicals suggested Goo Gone and an orange degreaser would be comparable, just they were primarily acetone-based. How It Works
Well, we don't know how information technology actually works, but we do know the literature says to score the adhesive with a knife and spray the scored area with the solvent. Echo every five minutes, then use some blazon of wedge, like a screwdriver, to widen the gap and repeat. Information technology was fastest when I pried open the joint and quickest to remove the 5200 residue and mucilage. Ease of Attempt on 5200: iii/3
Ease of Endeavor on Mucilage: 3/iii Removed all 5200? Yeah
Removed all gum? Yes Zack Stovall
Performance Report
MEK elevates flammable warnings to explosive levels. Breathing information technology is linked to neurological and organ impairment, all prospects adding to the thrill of this test. It is used in gums, rubber, resins and plastics, and as a paint and epoxy remover. There is really nothing on the label that indicates information technology's a solvent ideal for 5200 (or polyurethane), only every bit one of the most common solvents found in a boat shop, we felt it should be in our test lineup. How It Works
While it'south offered as a paint remover and solvent, no directions were offered on the label for that awarding. Nosotros scored the exam bond and brushed the production onto information technology, so deepened the cut. It evaporated quickly and was slowest to cutting the bond, merely worked well at cleaning the residue and did well on the gum, removing it quickly. Ease of Effort on 5200: 2/3
Ease of Effort on Gum: ii/3 Removed all 5200? Yep
Removed all gum? Yes Zack Stovall
Operation Written report
The manufacturer's SDS on denatured alcohol is even scarier than the ane for MEK. Information technology'southward combustible, explosive and poisonous. If exposed via animate, skin contact or ingesting (well, naturally if ingested), call the poison eye. Its recommended uses are as a paint thinner, hard surface cleaner and sanding agent, which when applied will lift the grain and evaporate quickly, allowing for more efficient sanding and a smoother stop. How It Works
Denatured alcohol is basically poisoned moonshine unfit for human consumption. If consumed, it may give y'all one last skilful party without the badgerer of waking upwardly to a hangover. Information technology'southward not noted equally a cancer-causing agent, and it isn't disallowed in California where information technology could be served to Republicans. It wasn't whatever good at mucilage and poor on 5200. Ease of Endeavor on 5200: 2/iii
Ease of Effort on Glue: 1/3 Removed all 5200? Yes
Removed all gum? No Zack Stovall
Functioning Report
Climbing the scale of explosivity, we come up to boatbuilding's oldest solvent — acetone. It evaporates so rapidly that information technology feels cool on your easily while information technology penetrates and burns the upper cells. Information technology is used to thin fiberglass resins, epoxy and adhesives. Dire warnings aside, acetone is the chief ingredient in blast-shine remover to prep the blast for a new coat. Acetone keeps things make clean in organic chemistry labs, but information technology would be a poor substitute for 409. How It Works
The water-soluble solvent evaporates quickly simply also mixes with resins and many adhesives, a property that gives it the ability to remove such compounds where they are no longer wanted. Like the fast-evaporating denatured booze, we brushed information technology on a scored edge of the 5200, waited and scored again. It was lousy at removing 5200 — no news there. Ease of Effort on 5200: 1/3
Ease of Effort on Gum: i/3 Removed all 5200? Yes
Removed all mucilage? Yes Zack Stovall
How We Tested
Purple Marine in Orlando, Florida, donated some fiberglass hatch cutouts as test panels. We fashioned five panels to be easily clamped to a bench. Then we bonded smaller panels to them using 5200. Since 5200 cures faster when it'southward moist, we misted it with h2o immediately, and then again 2 days later, and allow the panels cure for seven days — longer than the literature called for.
Removing 5200 per the DeBond directions required scoring the adhesive bond with a knife, spraying the production on the scored marker, assuasive it to soak in, and so scoring, spraying and repeating until the bond was removed. This was the procedure we used with all the solvents.
Chewing gum happens, so we pressed some into an unfinished open-grain board and let it harden for 24 hours, then used a rag and the solvent to remove it.
How Nosotros Scored
Product successfully removed 5200: Aye or No
Removed chewing gum: Yes or No
Ease cistron (how much effort was needed?): Easy = three, OK = 2, Difficult = ane
After a calendar week, our 5200 had cured around the edges of the panels about a ½ inch underneath, but not in the eye. That could accept weeks we didn't take in the schedule. We worked each product every bit close to the same manner as possible. Step ane
We scored the agglutinative dewdrop which allowed the solvent to penetrate into the dewdrop to do its piece of work. Only DeBond came in pump and aerosol containers for piece of cake application. We wiped on the other products, or dribbled them on every bit carefully equally possible. Randy Vance
On each panel, we scored, and then doused, then moved on to the next console, assuasive five minutes or so between application and scoring. After nosotros had scored deeply enough to wedge a screwdriver into the gap, nosotros did so, adding more than solvent and repeating to get them off. Randy Vance
Step iii was to remove the residue, a process we ended with plastic razor scrapers. The DeBond did this faster, as was the case with the initial removal of the console. It's higher viscosity may have aided in this, keeping the product working instead of evaporating. Randy Vance
Source: https://www.boatingmag.com/marine-solvents-for-removing-5200/
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