tag:blogger.com,1999:blog-401164737462963207.post8341480866543611157..comments2024-03-28T00:14:10.834-07:00Comments on Ben Krasnow: Adhesive for polypropylene and other low-energy surface plasticsBen Krasnowhttp://www.blogger.com/profile/04234629396863486242noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-401164737462963207.post-92012143089959180242020-08-06T10:41:08.848-07:002020-08-06T10:41:08.848-07:00The recycle code can tell you a lot, too. Mine is...The recycle code can tell you a lot, too. Mine is 5 - polypropylene.Anonymoushttps://www.blogger.com/profile/08344373417534875650noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-80355952252560410592020-02-11T22:26:07.036-08:002020-02-11T22:26:07.036-08:00I've heard Contact Cement doesn't hold up ...I've heard Contact Cement doesn't hold up well under heat. 3M 17.6-fl oz Bonding Clear Multipurpose Adhesive would likely be a decent alternativeSean Simpsonhttps://www.blogger.com/profile/03437487083775017798noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-16331718537010309532019-01-19T12:00:19.760-08:002019-01-19T12:00:19.760-08:00There should be letters molded into the plastic. E...There should be letters molded into the plastic. Example(s) HDPE, PP of which you will be able to learn the type of used.Anonymoushttps://www.blogger.com/profile/02000073345147128127noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-90811803452200817892018-12-06T21:09:09.165-08:002018-12-06T21:09:09.165-08:00Best Test Rubber Cement Thinner is Hexane, availab...Best Test Rubber Cement Thinner is Hexane, available at better art supply stores.Dave Jonsonhttp://photogentink.comnoreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-48112368850092261912018-08-08T13:06:47.542-07:002018-08-08T13:06:47.542-07:00How can I repair a cracked (broken) basket from my...How can I repair a cracked (broken) basket from my Fellowes paper shredder? Manuf could not tell me the type of plastic used!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-53380483080564164792018-06-29T23:01:56.326-07:002018-06-29T23:01:56.326-07:00Ok you need to change the surface energy, dyne (a ...Ok you need to change the surface energy, dyne (a measurement of that energy) with a silane, usually but there other ways these have quite the affinity to carbon and hydrgen atoms but not to itself, so the thickness of this coating is very important then apply the cynoactrylate adhesive with a soft brush this helps with silane thickness .The other ways are flame and corona/plasma treatment but due to the delicate nature of the process it is exceptionally difficult to do by hand on a one off basis and is usally reserved for automated processes Another way is to florinate the surface with florine gas but as this stuff is detrmental to most living things I would avoid trying this. Hope this helps with laying out the issues of poly propylenes, poly ethylenes and the rest of the polyolfin range This not so much a how to, but a why to.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-14809051905086067792017-02-13T03:09:51.067-08:002017-02-13T03:09:51.067-08:00A DVD case made of PP cleaned with alcohol, cyanoa...A DVD case made of PP cleaned with alcohol, cyanoacrylate (superglue) and a piece of plywood did not stick at all.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-39436558092491113322016-09-05T03:20:33.963-07:002016-09-05T03:20:33.963-07:00Another test showed Contact Cement worked even bet...Another test showed Contact Cement worked even better than cyanoacrylateBillhttps://www.blogger.com/profile/12954055336330744253noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-56894978205312537302016-08-29T06:06:54.838-07:002016-08-29T06:06:54.838-07:00Heat welding is the best but if joining dissimilar...Heat welding is the best but if joining dissimilar plastics like ABS to Polypropylene for example some times a two step approach might work. You mechanically joint the two pieces first (bolts, screws, pegs etc. ) to keep the pieces together then use something applied before assembly to fill the gaps like ABS--PVC transition solvent.<br /><br />From a pure gluing perspective a small test I did showed cyanoacrylate (crazy glue on roughened surface) had considerable holding power. Other people show mixing this with baking powder. This would give it bulk and perhaps work as a sealant.<br /><br />August 29, 2016 at 5:55 AMBillhttps://www.blogger.com/profile/12954055336330744253noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-22957312029410497222016-08-29T05:55:56.521-07:002016-08-29T05:55:56.521-07:00This comment has been removed by the author.Billhttps://www.blogger.com/profile/12954055336330744253noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-3732940865049792442016-07-14T06:21:45.645-07:002016-07-14T06:21:45.645-07:00Loctite makes a primer which I believe contains he...Loctite makes a primer which I believe contains hexane. It is a clear liquid. You brush it on, wait a few seconds for it to flash dry and the plastic will accept their cyanoacrylate (crazy glue). I use their 401. It is also sold in the usual retail stores in a tiny combi pack, good for one or two small jobs. The solvent treats the surface of PP, PE, teflon, delrin, etc. To accept the adhesive. Works oretty good. I have forgotten the number if the primer but it aint cheap, eitherRunning Low on foodhttps://www.blogger.com/profile/13488402900997076874noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-80376753708922976462016-07-14T06:17:10.753-07:002016-07-14T06:17:10.753-07:00Loctite makes a primer which I believe contains he...Loctite makes a primer which I believe contains hexane. It is a clear liquid. You brush it on, wait a few seconds for it to flash dry and the plastic will accept their cyanoacrylate (crazy glue). I use their 401. It is also sold in the usual retail stores in a tiny combi pack, good for one or two small jobs. The solvent treats the surface of PP, PE, teflon, delrin, etc. To accept the adhesive. Works oretty good. I have forgotten the number if the primer but it aint cheap, eitherRunning Low on foodhttps://www.blogger.com/profile/13488402900997076874noreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-84875722712999164802015-05-31T15:14:27.992-07:002015-05-31T15:14:27.992-07:00The gritty mixture can be explained by the datashe...The gritty mixture can be explained by the datasheet "The joint design of the substrates should facilitate a .005" to .008" adhesive thickness at the bondline. Adhesive contains .008" micropheres for this purpose". I first suspected my adhesive had been contaminated when I used it.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-70851195432705434042011-12-07T10:23:34.044-08:002011-12-07T10:23:34.044-08:00I had a similar problem to solve with HDPE (high d...I had a similar problem to solve with HDPE (high density polyethylene); I tried this same adhesive without success. However, I was surprised how easy it was to just melt the two parts together - they solidify and intermix forming a strong bond. I didn't try it but you might look into plastic welding using hot air - from your other posts I think you might like it!Mike Jacksonnoreply@blogger.comtag:blogger.com,1999:blog-401164737462963207.post-22699722959541876002011-07-15T12:53:46.556-07:002011-07-15T12:53:46.556-07:00Amazing GOOP 3.7 oz Interior/Exterior Plumbing Gl...Amazing GOOP 3.7 oz Interior/Exterior Plumbing Glue<br /><br />You can get it at Lowes or Home Depot... their motto is "Glues whatever. Lasts forever." I use it all the time to glue just about every type of surface, including poly-plastics. I glued a makeshift nozzle into one outlet of my garden sprinkler (cut from a WD-40 straw) with Goop and it's holding under pressure.amz-fxhttp://www.muzique.com/noreply@blogger.com