Pakikipagtulungan
SINING
BEAUTY AT WELLNESS
CRAFTS
KULTURA AT KASAYSAYAN
LIBANGAN
KAPALIGIRAN
PAGKAIN AT INUMIN
REVERSE ENGINEERING
AGHAM
ISPORTS
TEKNOLOHIYA
MGA WEARABLE
Acrylic Polymer Medium: Methyl Methacrylate Emulsified by Persulfate Alone
Acrylic polymer medium is an emulsion of acrylic polymer in water, the binder of acrylic paint. ICI's Renfrew and Gates (US 2,296,403, 1942) found that a persulfate alone both keeps the monomer dispersed and starts it polymerising, so no soap is needed. Their Example 2 stirs 30 parts methyl methacrylate and 20 parts dibutyl phthalate (a plasticiser) hard in 100 parts water with 1 part persulfate at about 80 °C; the batch heats itself to 90-95 °C and gives a very stable emulsion. Using it as paint medium is our choice.
The picture: our diagram.
Katamtaman
Half a day
Mga Tagubilin
1
1
Weigh the charge
Weigh the charge
Weigh 30 parts methyl methacrylate, 20 parts dibutyl phthalate, 100 parts water and 1 part persulfate (ours: potassium persulfate; the example used lithium persulfate, and the patent names potassium among the alternatives).
Mga materyales para sa hakbang na ito:
Methyl Methacrylate30 parts
Dibutyl Phthalate20 parts
Tubig100 parts
Persulfate na pansimula ng reaksiyon1 partMga kailangang kasangkapan:
Timbangang panimbang
Salamin Laban sa Tilamsik ng Kemikal
Gwantes na goma2
2
Stir hard at about 80 °C
Stir hard at about 80 °C
Put everything in a flask with a reflux condenser and stir very vigorously at about 80 °C, where it refluxes gently.
Mga kailangang kasangkapan:
Prasko na bilog ang ilalim
Kondenser na Pang-reflux
Panghalo
Water Bath
Pang-init na Plato
Termometrong Panlaboratoryo
Kabinet ng usok (may tubo)3
3
Let it heat itself
Let it heat itself
After about half an hour the polymerisation starts giving off heat and the temperature climbs to 90-95 °C on its own. Keep stirring.
Mga kailangang kasangkapan:
PanghaloTermometrong Panlaboratoryo4
4
Cool
Cool
When the temperature starts to fall, the polymerisation is complete. Stop stirring and let it cool. The result is a very stable emulsion.
Mga kailangang kasangkapan:
Termometrong PanlaboratoryoMga Materyales
4- 30 partsPlaceholder
- 20 partsPlaceholder
- 100 partsPlaceholder
- Placeholder
Mga Kinakailangang Kasangkapan
10- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
Ang blueprint na ito ay gumagawa ng
Kaugnay na Blueprint
Ang mga blueprint na ito ay nagbabahagi ng kaalaman — mga teknik, materyales, o prinsipyo
CC0 Pampublikong Domain
Ang blueprint na ito ay inilabas sa ilalim ng CC0. Malaya kang kumopya, magbago, mamahagi, at gumamit nang walang pahintulot.
Suportahan ang Maker sa pamamagitan ng pagbili ng mga produkto sa kanilang Blueprint Komisyon ng Maker itinakda ng mga Vendor, o lumikha ng bagong bersyon ng Blueprint na ito at isama bilang koneksyon sa iyong Blueprint upang ibahagi ang kita.