Sylgard 184
Which material are scuba masks sealing and feeding bottle tips made of?
2023.08.16 15:45 AS-506 Which material are scuba masks sealing and feeding bottle tips made of?
 | Hello! submitted by AS-506 to InjectionMolding [link] [comments] We are designing a vascular model for training at our hospital. We are requiring a flexible, transparent and tear resistant material. After reading some papers we did our first test with , Dow corning sylgard 184 silicone. Sadly as seen on picture it wasn’t as tear resistant as expected. Crack produced on Sylgard 184 Thinking of transparent, flexible and tear resistant silicones, we thought about the ones used on the sealing of scuba mask or feeding bottle tips. Where can we source this material? Thanks! https://preview.redd.it/l6m5ue8z7hib1.png?width=892&format=png&auto=webp&s=0d17a4714c7066269fa3815432ba8d8425304606 https://preview.redd.it/f1ygqll08hib1.png?width=417&format=png&auto=webp&s=337fcdd364ef0b60f987591fba825cc6f224bf2f |
2023.08.16 15:40 AS-506 What are scuba masks sealing and feeding bottle tips made of?
 | Hello! submitted by AS-506 to DIY [link] [comments] We are designing a vascular model for training at our hospital. We are requiring a flexible, transparent and tear resistant material. After reading some papers we did our first test with , Dow corning sylgard 184 silicone. Sadly as seen on picture it wasn’t as tear resistant as expected. Crack produced on Sylgard 184 Thinking of transparent, flexible and tear resistant silicones, we thought about the ones used on the sealing of scuba mask or feeding bottle tips. Where can we source this material? Thanks! https://preview.redd.it/pdy03v637hib1.png?width=892&format=png&auto=webp&s=fdbe774dd0a1d381111e4be0a533c87a1eabe186 https://preview.redd.it/6vn6r5n37hib1.png?width=417&format=png&auto=webp&s=5c912fb5d933b76afde824a5499491aa9ca55c12 |
2023.08.16 15:36 AS-506 What are scuba masks sealing and feeding bottle tips made of?
 | Hello! submitted by AS-506 to MaterialsScience [link] [comments] We are designing a vascular model for training at our hospital. We are requiring a flexible, transparent and tear resistant material. After reading some papers we did our first test with , Dow corning sylgard 184 silicone. Sadly as seen on picture it wasn’t as tear resistant as expected. Crack produced on Sylgard 184 Thinking of transparent, flexible and tear resistant silicones, we thought about the ones used on the sealing of scuba mask or feeding bottle tips. Where can we source this material? Thanks! https://preview.redd.it/jhv16qoj6hib1.png?width=892&format=png&auto=webp&s=e0ff51424597e04366ef8c5b0a77cc2a6d072587 https://preview.redd.it/6j0kdnbk6hib1.png?width=417&format=png&auto=webp&s=9ff29b42ec0504cf905301fb2c455b8d589afa63 |
2023.08.16 15:27 AS-506 What are scuba masks sealing and feeding bottle tips made of?
Hello!
We are designing a vascular model for training at our hospital. We are requiring a flexible, transparent and tear resistant material. After reading some papers we did our first test with Dow corning sylgard 184 silicone. Sadly as seen on picture it wasn’t as tear resistant as expected.
https://drive.google.com/file/d/1m--X8qzqM3NekyixdhblKlUlvl7HW_gJ/view
Thinking of transparent, flexible and tear resistant silicones, we thought about the ones used on the sealing of scuba mask or feeding bottle tips.
https://drive.google.com/file/d/1CzouldvEpTSlK92ECtovO64Hos_0svLW/view?usp=sharing
https://drive.google.com/file/d/1CywuQDnKUMKNzWkNdQ7pt4iqnN5-u07Z/view?usp=sharing
Where can we source this material? Thanks!
submitted by AS-506 to AskEngineers [link] [comments]
We are designing a vascular model for training at our hospital. We are requiring a flexible, transparent and tear resistant material. After reading some papers we did our first test with Dow corning sylgard 184 silicone. Sadly as seen on picture it wasn’t as tear resistant as expected.
https://drive.google.com/file/d/1m--X8qzqM3NekyixdhblKlUlvl7HW_gJ/view
Thinking of transparent, flexible and tear resistant silicones, we thought about the ones used on the sealing of scuba mask or feeding bottle tips.
https://drive.google.com/file/d/1CzouldvEpTSlK92ECtovO64Hos_0svLW/view?usp=sharing
https://drive.google.com/file/d/1CywuQDnKUMKNzWkNdQ7pt4iqnN5-u07Z/view?usp=sharing
Where can we source this material? Thanks!
2023.08.16 14:53 AS-506 What are scuba masks and feeding bottle tips made of?
 | Hello! submitted by AS-506 to moldmaking [link] [comments] We are designing a vascular model for training at our hospital. We are requiring a flexible, transparent and tear resistant material. After reading some papers we did our first test with , Dow corning sylgard 184 silicone. Sadly as seen on picture it wasn’t as tear resistant as expected. Crack produced on Sylgard 184 Thinking of transparent, flexible and tear resistant silicones, we thought about the ones used on the sealing of scuba mask or feeding bottle tips. https://preview.redd.it/psbdcqbgygib1.png?width=892&format=png&auto=webp&s=512ec78a20aa46116afb9e5189ff20dbcefd1072 https://preview.redd.it/tz8on2ykygib1.png?width=417&format=png&auto=webp&s=ffe9446ac86df63b632524a498041ce40f89b10c Where can we source this material? Thanks! |
2023.07.19 12:29 AS-506 Sylgard 184 not tear resistant. ¿Method error? ¿Material alternatives?
 | Hello, submitted by AS-506 to MaterialsScience [link] [comments] We are requiring a transparent flexible material. Now we are using Sylgard 184 under the recommended instructions,1/10 mix, 15min vacuum and curing at ambient temperature for 3 days. Surprisingly after our first pour we find the behaviour of the material extremely fragile on certain flexions, as it develops cracks (not tear resistant) that easily propagate (see linked picture). https://preview.redd.it/j1mmdnydfwcb1.jpg?width=2985&format=pjpg&auto=webp&s=255c22b2c4611b171cdc140d983226994c479053 ¿Are we doing something wrong? ¿Is there any variation on the technique to avoid these cracks? ¿Would you recommend any other castable flexible, tear resistant and transparent material? Thanks! |
2023.02.21 15:48 TooLateToPush Help me find a useable encapsulant for work
We currently use an encapsulant by the name of Sylgard 184. It works for a lot of what we use, but has been having bonding issues with what we are doing currently
I am trying to find something that is somewhat similar, but with a bond that wont have issues in temperatures and humidity
Also, the least toxic the better lol
thanks in advance
submitted by TooLateToPush to HelpMeFind [link] [comments]
I am trying to find something that is somewhat similar, but with a bond that wont have issues in temperatures and humidity
Also, the least toxic the better lol
thanks in advance
2022.10.20 21:03 theresnonamesleft2 PDMS bubbles
I am trying to figure out a way to reduce bubble formations when pouring PDMS into a mold for creating microfluidic devices. I mix the 184 sylgard with a 10:1 ratio with the curing agent, then degas it in a vacuum chamber for 30 minutes before attempting to pour the mix into a microfluidic device mold. The annoyance is every time I try and pour into the mold new bubbles are forming in the mixture that I then have to go and pop by hand, I was wondering if anyone had any experience in preventing this from happening. I cannot degas the mixture in the mold because the master-print is very fragile and cracks under the negative pressure, so I am stuck popping the bubbles by hand using a paperclip which is very frustrating.
submitted by theresnonamesleft2 to chemhelp [link] [comments]
2021.07.03 18:43 Muttly2001 Help: Using UV resin as a mold. Object is tacky where it adheres to the resin mold.
I did a search and couldn’t find a good answer.
Question about using basic UV resin as a mold. After releasing the object cast the bottom was really tacky. Is this a property of using UV resin as a mold? Below is the process used:
I rinsed the mold with isopropyl alcohol. Mixed sylgard 184 at a 10 to 1 ratio. I poured it onto the mold. Degassed it in a vacuum chamber for 20 min until the bubbles were gone. Then I put it in an oven at 150 deg C for 10 min. Then it sat, at room temp for another 24h ish.
No release agent. I used a scalpel to separate it from the four walls then I peeled it off. The side that was against the mold is extremely tacky. Is this a result of using basic UV resin as a mold?
It is basically a clear plate used for lab work. Not looking for detail or longevity of the mold since I only need 1-2 of these rectangle plates.
Thanks in advance!
submitted by Muttly2001 to ResinCasting [link] [comments]
Question about using basic UV resin as a mold. After releasing the object cast the bottom was really tacky. Is this a property of using UV resin as a mold? Below is the process used:
I rinsed the mold with isopropyl alcohol. Mixed sylgard 184 at a 10 to 1 ratio. I poured it onto the mold. Degassed it in a vacuum chamber for 20 min until the bubbles were gone. Then I put it in an oven at 150 deg C for 10 min. Then it sat, at room temp for another 24h ish.
No release agent. I used a scalpel to separate it from the four walls then I peeled it off. The side that was against the mold is extremely tacky. Is this a result of using basic UV resin as a mold?
It is basically a clear plate used for lab work. Not looking for detail or longevity of the mold since I only need 1-2 of these rectangle plates.
Thanks in advance!
2021.01.31 06:13 Alexander_Jayden Any idea how I can assign specific nodes to act like the active area to apply voltage , in other word to act like electrodes
Can anyone help me in simulating a Dielectric elastomer actuator? The material I am using is a pre-stretched SYLGARD 184 with CNT patches as electrodes on the top and bottom of the sheet. How to apply a voltage at the center of my Elastomer sheet from the top and bottom?
I am doing my simulation in ANSYS APDL and I really don't know how to do it my knowledge is very limited and I can not find any reference that can help. I tried a lot of commands like, (CP,NSEL, etc.) to represent the electrode but I could not.
My geometry is simple it is just a rectangular with the following dimensions : length = 60 mm , Width = 60 mm, thickness = 0.5 mm and the electrodes diameter = 20 mm
I hope that someone can help and guide me with the commands I can use to apply the voltage at the center of my elastomer sheet
Best Wishes,
Alexander
submitted by Alexander_Jayden to ANSYS [link] [comments]
I am doing my simulation in ANSYS APDL and I really don't know how to do it my knowledge is very limited and I can not find any reference that can help. I tried a lot of commands like, (CP,NSEL, etc.) to represent the electrode but I could not.
My geometry is simple it is just a rectangular with the following dimensions : length = 60 mm , Width = 60 mm, thickness = 0.5 mm and the electrodes diameter = 20 mm
I hope that someone can help and guide me with the commands I can use to apply the voltage at the center of my elastomer sheet
Best Wishes,
Alexander
2019.05.23 17:36 SolarTortality Will PDMS react with D-limonene?
I am trying to create a very complex part using a 3D printed mold and casting SYLGARD-184 PDMS in it. Currently, I am thinking that the best method for obtaining the finished, casted product is to dissolve the mold away. I have chosen HIPS as my 3D printable material as I can first treat it with an acetone vapor bath in order to obtain greater surface smoothness and I know that after the product is casted I can dissolve it away with the solvent limonene.
My question here is will limonene have any adverse effects on my PDMS product? If so I will not be able to use this method. Thanks for anyone who can help and sources would be very appreciated but any help is better than none!
submitted by SolarTortality to chemistry [link] [comments]
My question here is will limonene have any adverse effects on my PDMS product? If so I will not be able to use this method. Thanks for anyone who can help and sources would be very appreciated but any help is better than none!
2019.05.23 17:17 SolarTortality Will PDMS react with limonene
I am trying to create a very complex part using a 3D printed mold and casting SYLGARD-184 PDMS in it. Currently, I am thinking that the best method for obtaining the finished, casted product is to dissolve the mold away. I have chosen HIPS as my 3D printable material as I can first treat it with an acetone vapor bath in order to obtain greater surface smoothness and I know that after the product is casted I can dissolve it away with the solvent limonene.
My question here is will limonene have any adverse effects on my PDMS product? If so I will not be able to use this method. Thanks for anyone who can help and sources would be very appreciated but any help is better than none!
submitted by SolarTortality to chemhelp [link] [comments]
My question here is will limonene have any adverse effects on my PDMS product? If so I will not be able to use this method. Thanks for anyone who can help and sources would be very appreciated but any help is better than none!
2016.11.17 22:55 LosLocosKickYourAss DIY solar panels
My university just started a cube sat program, and I was placed in the power system team. We have a Solar car program, and they graciously donated a dozen of the GaAs triple junction cells for us to use. I'm hoping to encapsulate these and make our own solar panels. My initial research came back with using Dow Corning Sylgard 184, but after talking with their customer support, they recommend using 93-500 due to outgassing issues. Has anyone used this product or done their own solar panels? Google is only directing me to sites with pre-made ones. Any help would be appreciated.
submitted by LosLocosKickYourAss to cubesat [link] [comments]
2016.06.07 20:08 zannyfamily Silicone casted in PLA mold - cloudy surface [xpost from /r/resincasting]
Hi everyone! I made a PLA printed ball. I casted silicone inside that "mold" with another PLA element inside. Outcome I wanted was to get a silicone ball with that PLA element in. I used silicone like Sylgard 184 (local replacement) and let it cast for over 48 hours. However... the surface of silicone ball, which had contact with PLA is totally cloudy and has very poor visibility:
https://drive.google.com/open?id=0B1BElkTKAmk9Z3lwUXlhV2ctUnM
https://drive.google.com/open?id=0B1BElkTKAmk9Nm8wMjJXdDRUb3c
As you can see, the top of "ball", which had no contact with PLA, and is level of silicone that was poured in, is really clear! Do you have any ideas how to smooth the cloudy surface and improve visibility? Thank you!
EDIT: I followed your tips and finished the PLA. What I did was: 1) sanding PLA; 2) layer of XTC-3D; 3) repeat 1-2 once. Now it looks PERFECTLY! Thank you so much.
submitted by zannyfamily to DIY [link] [comments]
https://drive.google.com/open?id=0B1BElkTKAmk9Z3lwUXlhV2ctUnM
https://drive.google.com/open?id=0B1BElkTKAmk9Nm8wMjJXdDRUb3c
As you can see, the top of "ball", which had no contact with PLA, and is level of silicone that was poured in, is really clear! Do you have any ideas how to smooth the cloudy surface and improve visibility? Thank you!
EDIT: I followed your tips and finished the PLA. What I did was: 1) sanding PLA; 2) layer of XTC-3D; 3) repeat 1-2 once. Now it looks PERFECTLY! Thank you so much.
2016.06.07 19:43 zannyfamily Silicone casted in PLA mold - cloudy surface [xpost from /r/resincasting]
Hi everyone! I made a PLA printed ball. I casted silicone inside that "mold" with another PLA element inside. Outcome I wanted was to get a silicone ball with that PLA element in. I used silicone like Sylgard 184 (local replacement) and let it cast for over 48 hours. However... the surface of silicone ball, which had contact with PLA is totally cloudy and has very poor visibility:
https://drive.google.com/open?id=0B1BElkTKAmk9Z3lwUXlhV2ctUnM
https://drive.google.com/open?id=0B1BElkTKAmk9Nm8wMjJXdDRUb3c
As you can see, the top of "ball", which had no contact with PLA, and is level of silicone that was poured in, is really clear! Do you have any ideas how to smooth the cloudy surface and improve visibility? Thank you!
submitted by zannyfamily to 3Dprinting [link] [comments]
https://drive.google.com/open?id=0B1BElkTKAmk9Z3lwUXlhV2ctUnM
https://drive.google.com/open?id=0B1BElkTKAmk9Nm8wMjJXdDRUb3c
As you can see, the top of "ball", which had no contact with PLA, and is level of silicone that was poured in, is really clear! Do you have any ideas how to smooth the cloudy surface and improve visibility? Thank you!
2016.06.07 19:33 zannyfamily Silicone casted in PLA mold - cloudy surface
Hi everyone! I'm not sure whether it is correct sub but it seems to be closest to what I need so I thought I'd just ask you guys.
So I made a ball printed in 3D with PLA material. I casted silicone inside that "mold" with another PLA element inside. Outcome I wanted was to get a silicone ball with that PLA element in.
I used silicone like Sylgard 184 (local replacement) and let it cast for over 48 hours. However... the surface of silicone ball, which had contact with PLA is totally cloudy and has very poor visibility:
https://drive.google.com/open?id=0B1BElkTKAmk9Z3lwUXlhV2ctUnM https://drive.google.com/open?id=0B1BElkTKAmk9Nm8wMjJXdDRUb3c
As you can see, the top of "ball", which had no contact with PLA, and is level of silicone that was poured in, is really clear! Do you have any ideas how to smooth the cloudy surface and improve visibility? Thank you!
EDIT: I followed your tips and finished the PLA. What I did was: 1) sanding PLA; 2) layer of XTC-3D; 3) repeat 1-2 once. Now it looks PERFECTLY! Thank you so much.
submitted by zannyfamily to ResinCasting [link] [comments]
So I made a ball printed in 3D with PLA material. I casted silicone inside that "mold" with another PLA element inside. Outcome I wanted was to get a silicone ball with that PLA element in.
I used silicone like Sylgard 184 (local replacement) and let it cast for over 48 hours. However... the surface of silicone ball, which had contact with PLA is totally cloudy and has very poor visibility:
https://drive.google.com/open?id=0B1BElkTKAmk9Z3lwUXlhV2ctUnM https://drive.google.com/open?id=0B1BElkTKAmk9Nm8wMjJXdDRUb3c
As you can see, the top of "ball", which had no contact with PLA, and is level of silicone that was poured in, is really clear! Do you have any ideas how to smooth the cloudy surface and improve visibility? Thank you!
EDIT: I followed your tips and finished the PLA. What I did was: 1) sanding PLA; 2) layer of XTC-3D; 3) repeat 1-2 once. Now it looks PERFECTLY! Thank you so much.
2014.01.29 10:09 limopdms Will a PDMS solid in a Limonene solution react?
Dear chemists,
I need to know if a PDMS solid will react with a limonene solution?
PDMS: Dow Corning Sylgard-184
Limonene: Undefined
Thanks for the help!
submitted by limopdms to chemhelp [link] [comments]
I need to know if a PDMS solid will react with a limonene solution?
PDMS: Dow Corning Sylgard-184
Limonene: Undefined
Thanks for the help!
2011.07.19 21:19 graylunarmake What happens as I cure PDMS?
I'm using a Sylgard 184 Elastomer Kit to produce a silicone known as polydimethylsiloxane or PDMS. http://www.dowcorning.com/applications/search/products/Details.aspx?prod=01064291&type=PROD
To cure (I'm not sure what the technical definition of this is either) the silicone, I add a curing agent to the silicone base in a 1:10 ratio.
What exactly is happening here, at the chemical level? Does the base consist of silicone monomers which are somehow polymerized by the curing agent? Or is the curing agent taking the polymers and forming crosslinks somehow?
Thanks!
submitted by graylunarmake to askscience [link] [comments]
To cure (I'm not sure what the technical definition of this is either) the silicone, I add a curing agent to the silicone base in a 1:10 ratio.
What exactly is happening here, at the chemical level? Does the base consist of silicone monomers which are somehow polymerized by the curing agent? Or is the curing agent taking the polymers and forming crosslinks somehow?
Thanks!