durbans heat resistant epoxy formula

[Georgesalmon]

Re: durbans heat resistant epoxy formula

After reading a lot of this I am guessing that what durban used might be an asbestos like material and not the real thing. Since they are using it in home building it is likely just as good as asbestos was but not the real thing, only a very good new kind of fire retardant material

 

[Faztbullet]

Re: durbans heat resistant epoxy formula

motor doesnt get near to this heat so i wouldnt worry about it

Two-strokes generally run best when the exhaust temperature (measured approximately 3 to 6 inches from the block exhaust port) falls between 1150 and 1300 degrees Fahrenheit at wide-open throttle (WOT). Partial throttle readings will typically measure quite a bit less. A well-tuned outboard usually shows temperatures in the 700- to 800-degree range at idle to off-idle speeds, climbing to about 850 or 900 degrees in the midrange, then finally to about 1200 degrees at three-quarters to full throttle. Source for this information and guages below....

Digatron Instruments
Dept. BWB, 8102 North Freya St., Spokane, WA 99217 509/467-3128 digatron.cc

Exhaust Gas Technologies
Dept. BWB, 1381 N. Kraemer Blvd., Anaheim, CA 92806
800/348-4678 exhaustgas.com

Gaffrig by Livorsi Marine
Dept. BWB, 10 Gaffrig Drive, Grayslake, IL 60030
847/548-5900 livorsi.com

Hewitt Industries
Dept. BWB, 5492 Bolsa Ave., Huntington Beach, CA 92649; 714/891-9300 hewittindustries.com

Hydro-Dynamics
Dept. BWB, 1 Hydro Lane, P.O. Box 418, Benton, LA 71006
318/965-0201(no website)

Nordskog Performance Products
Dept. BWB, 1120 Yarnell Place, Oxnard, CA 93033
805/483-2411 nordskogperformance.net

Racepak/CSI
Dept. BWB, 30402 Esperanza, Rancho Santa Margarita, CA 92688; 949/709-5555 racepak.com

 

[metriccrescentwrench]

Re: durbans heat resistant epoxy formula

WOA, STOP RIGHT THERE ! ! ! !

Just because you can hold a chunk of epoxy in a flame for a few moments and it doesn't burn DOES NOT mean that it's suitable for elevated temperatures. And just because you embed some material that is suitable for high temperatures in a certain type of epoxy DOES NOT make the composite material suitable for high temperatures.

When using epoxy to form a composite material you have to consider the epoxies' glass transition temperature (Tg). That's the temperature at which the epoxy will soften and the composite will loose structural integrity. In the case of West Systems epoxy that's somewhere in the range of 160 to 180 degrees F (I can't remember exactly but I know for sure that it's somewhere in that range). No matter what you add to West Systems it is absolutely not suitable for use above that temperature range.

There are other epoxies out there suitable for higher temperatures, but they don't have the ability to wet-out fiberglass cloth as nicely as West Systems and other laminating epoxies. You gotta' find an epoxy that matches your intended use.

 

[durban]

Re: durbans heat resistant epoxy formula

funny enough i mixed the epoxy with the fibre filling that they sell & painted it on my exhaust adaptor in the inside where the hot fumes come out from the ports on my rad con motor , after the motors has been idleing 25 lts of petrol out , when i did my bench tests i found that the adaptor gets a little bit hot , so i stripped it down & replaced it with another exhaust adaptor that has been modified for water to flow in & around it , on examination of the first adapotor i pianted with the fibre filling mixed with the epoxy i noticed that its still good & showed no signs of distorsion from the heat , the adaptor with the cooling water that i modified has now got the asbestos fibre mixed with the epoxy in on the inside & outside of the exhaust adaptor in the hotest area & that is where i find holes on most adaptors ive stripped on these old 1970,s 70hp

so once the motor is ready to be testest in the water at wot after many hours , then we will know if the proof is in the pudding , so theres no piont in saying this & that if theres no proof to go on by about this concept of the formula k , the fact that this formula does not chatch a light with a ciggarrett lighter as apose to the fibre filling that i used & that it also goes into the fibre cloth or matting whatever you call it for me this is one step up on the ladder this tells me i can biuld a fire proof boat & what ever else ,so there no big deal to get excited for nothing , cheers

 

[dockrat100]

Re: durbans heat resistant epoxy formula

Do I understand this to mean that someone has invented JB Weld? What a relief.

 

[durban]

Re: durbans heat resistant epoxy formula

Do I understand this to mean that someone has invented JB Weld? What a relief.

i will show you later something else you can do with my concept k , have a great day , cheers

 

[nwcove]

Re: durbans heat resistant epoxy formula

this tells me i can biuld a fire proof boat & what ever else ,so there no big deal to get excited for nothing , cheers

no offense durban.....but i think someone already beat you to the punch on a lightweight material for building fire proof ( resistant) boats....its called aluminum.

 

[durban]

Re: durbans heat resistant epoxy formula

no offense durban.....but i think someone already beat you to the punch on a lightweight material for building fire proof ( resistant) boats....its called aluminum.

what ever ? i am in no competion with no one in this world & just enjoy my hobbie & share my knowledge with the universe , cheers

 

[durban]

Re: durbans heat resistant epoxy formula

you very well know not all boats are biult from aliuminium , if i have the money i will biuld my own boat from this as i dont have a boat

 

[phillnjack2]

Re: durbans heat resistant epoxy formula

well to add a couple of things here to people who seem hell bent on putting Durban off his experiments.
for those who seem to think he is mad, (nwcove take note ) alluminium boats not only catch fire but
alluminium is terrible once it gets going.
Look what happened during the argentina v uk war when one of our new alluminium frigates got hit !!!!
it went up real fast and many of our sailors got burned to death due to the alluminium burning at such a rate.
get some alluminium fillings and chuck a match at it, then come back saying alluminium is fireproof.

epoxy falling apart at 160 degrees f is total rubbish, it gets hotter than on summers day in kuwait, and the epoxy boats
dont melt on their trailers do they... 160 f ha ha my shower is hotter than that......



But just one critical point to ask Durban.
I have noticed you have no boat, so why have you got a 3 cylinder outboard engine ?



phill.

 

[dockrat100]

Re: durbans heat resistant epoxy formula

No one is trying to discourage Durban from experimenting with whatever he wants. I do recall a few good neighbors expressing concern when he was supposedly filing and grinding carcinogenic material.

Yes, aluminum can burn, and so can magnesium. It takes a heck of a lot to get them going. More thermal energy than is likely to occur on the boat while fishing. That wasn't the point.

At what temperature does West system epoxy degrade? There is a real number, and now I am curious what it is. Never mind, I just spent three minutes on West system's website, and found this:

"Experience has also shown that while heat tends to soften epoxy while it remains warm, if WEST SYSTEM epoxy is not exposed to damaging heat (exceeding 230?F for extended periods), it will return to full strength when cooled to room temperature." WEST SYSTEM - Projects - If you can’t take the heat...

So according to West Systems, 230 F for extended periods is deemed as "damaging heat." I am guessing that the exhaust part in question will achieve that temperature rather quickly. (And for extended periods.)

West system epoxy is, according to the manufacturer, wholly unsuited for use in a high temperature environment. That took me a whole nine minutes of internet research to figure that out.

If one is going to reinvent the wheel, it is good to remember that playdoh is a poor material to work with. (I think the playdoh website says so):facepalm:

 

[durban]

Re: durbans heat resistant epoxy formula

my brian is not stuck just on westsystems epoxy as thier are other resins where i can use the formula , exampale vinyl ester resin takes far more heat degrees F as they make carbon grafhiet my formula will work with this aswell

 

[oldman570]

Re: durbans heat resistant epoxy formula

Yep the new J B Alumaweld dose a great job repairing aluminium just like the older J B Weld did on steel. I have used it to repair a few skegs and water jacket plates on Merc's where heat is present and it has worked for me.
Oldman570

 

[durban]

Re: durbans heat resistant epoxy formula

well to add a couple of things here to people who seem hell bent on putting Durban off his experiments.
for those who seem to think he is mad, (nwcove take note ) alluminium boats not only catch fire but
alluminium is terrible once it gets going.
Look what happened during the argentina v uk war when one of our new alluminium frigates got hit !!!!
it went up real fast and many of our sailors got burned to death due to the alluminium burning at such a rate.
get some alluminium fillings and chuck a match at it, then come back saying alluminium is fireproof.

epoxy falling apart at 160 degrees f is total rubbish, it gets hotter than on summers day in kuwait, and the epoxy boats
dont melt on their trailers do they... 160 f ha ha my shower is hotter than that......



But just one critical point to ask Durban.
I have noticed you have no boat, so why have you got a 3 cylinder outboard engine ?



phill.

ive sort of got a boat but is a scrap bought for 200 dlrs & ive got 7 motors , the boat not ready yet iam gonna make it longer & put in a freeboard deck & x2 scuppers & biuld a stand up console , when its finished my 70hp rad con motor gonna go on you will see the photos here
http://forums.iboats.com/boat-topics-questions-not-engine-topics/durbans-new-boat-564427.html

 

[durban]

Re: durbans heat resistant epoxy formula

today i showed the fibre glass shop owner a man thats been in the biusness for more than 42years & supplyies fibre glass & epoxy products to the marine & boating & industrial trade i showed him what i did with his product , he could not beleave what he saw when i put a lighter to it , he was imediatley interested & wanted to know where he could get it from as the council electrical boxes get set a light by kids & he wants a company to biuld them from my formula useing polyester resin this will solve the problem , , theres a soultion for most things , cheers

 

[metriccrescentwrench]

Re: durbans heat resistant epoxy formula

epoxy falling apart at 160 degrees f is total rubbish, it gets hotter than on summers day in kuwait, and the epoxy boats
dont melt on their trailers do they... 160 f ha ha my shower is hotter than that......

Nobody said anything about West System epoxy "falling apart" or melting. I was talking about a physical property of resin systems called Glass Transition Temperature, the temperature where it changes from a hard glass-like material to a rubbery material. Once cooled the resin will go back to it's full strength glass-like state, but while above Tg it is significantly weaker. Fiberglass composites can more or less withstand heating above Tg because most of the strength of the composite is with the glass, but a fiberglass composite heated above Tg will 'sag' when the resin becomes rubbery. Also, as Dockrat mentioned and I didn't, there's another temperature that you NEVER want to exceed with any resin system, the temperature specified by the manufacturer as "damaging heat". And, as Dockrat also pointed out, all of these physical properties can be found on the manufacturers website.

And I guarantee that there are no boats out there built using West Systems epoxy, in fact the vast majority use polyester resin.

 

[dockrat100]

Re: durbans heat resistant epoxy formula

http://www.westsystem.com/ss/assets/Product-Data-PDFs/105205-Technical-Data.pdf

Physical properties of cured epoxy
Specific gravity ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1.18
Hardness (Shore D) ASTM D-2240? ? ? ? ? ? ? ? ? ? ? ? ? ? 83
Compression yield ASTM D-695 ? ? ? ? ? ? ? ? ? ? ? ? 11,400 psi
Tensile strength ASTM D638 ? ? ? ? ? ? ? ? ? ? ? ? ? 7,900 psi
Tensile elongation ASTM D-638? ? ? ? ? ? ? ? ? ? ? ? ? ? 3.4%
Tensile modulus ASTM D-638? ? ? ? ? ? ? ? ? ? ? ? ? 4.08E+05
Flexural strength ASTM D-790 ? ? ? ? ? ? ? ? ? ? ? ? 14,100 psi
Flexural modulus ASTM D-790 ? ? ? ? ? ? ? ? ? ? ? ? 4.61E+05
Heat deflection temperature ASTM D-648 ? ? ? ? ? ? ? ? ? ? 118?F
Onset of Tg by DSC ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 129?F
Ultimate Tg ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 142?F
Annular shear fatigue @ 100,000 cycles ? ? ? ? ? ? ? ? ? ? 10,600 lb

 

[nwcove]

Re: durbans heat resistant epoxy formula

no offense durban.....but i think someone already beat you to the punch on a lightweight material for building fire proof ( resistant) boats....its called aluminum.

philnjack2...take note! as you can see from my post, i meant no offense to durban. i actually have commended him in numerous threads for his out of the box thinking, and willingness to try new things. forums are a place to express opinions and give advice.....its just my opinion that a boat made from epoxy and gypsum would not be as fire resistant as a good old tinny!!
( and i didnt get my knickers in a knot when some of the members here told me my solar powered flashlight idea wasnt a good one!!)

 

[dockrat100]

Re: durbans heat resistant epoxy formula

I love out of the box thinking.....When we had our first daughter, my wife wanted a breast pump, and I was too cheap (broke) to buy one. So I built one out of a windshield wiper motor. It has worked great for two kids now. It is, quite by accident, fire resistant and uses neither epoxy or gypsum in its construction.

 

[HighTrim]

Re: durbans heat resistant epoxy formula

I love out of the box thinking.....When we had our first daughter, my wife wanted a breast pump, and I was too cheap (broke) to buy one. So I built one out of a windshield wiper motor. It has worked great for two kids now. It is, quite by accident, fire resistant and uses neither epoxy or gypsum in its construction.

Thats hilarious.

My wife is pretty forgiving, but dont think she would let that fly!

If you hook one up to the compressor you could probably pump enough for a week in minutes!