UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Flexible PVC Compound: PVC Dissolved Hot in Tricresyl Phosphate and Dibutyl Phthalate
Flexible PVC was Waldo Semon's discovery at B. F. Goodrich (US 1,929,453, 1933): hard PVC dissolved at high temperature in a non-volatile liquid sets on cooling into a tough, rubbery solid. His gasoline-resistant composition is 8 parts PVC, 3 parts tricresyl phosphate and 3 parts dibutyl phthalate; more plasticiser makes it softer. It can be moulded and extruded, and he names insulating electric wire and lining hose among its uses. Cutting it into pellets is our step.
The picture: our diagram.
Hagati
Half a day
Amabwiriza
1
1
Weigh 8 : 3 : 3
Weigh 8 : 3 : 3
Weigh 8 parts PVC resin, 3 parts tricresyl phosphate and 3 parts dibutyl phthalate.
Ibikoresho by'iyi ntambwe:
Ifu ya PVC8 parts
Trikeresili Fosifate3 parts
Dibutili Fatalate3 partsIbikoresho bikenewe:
Umunzani w'ibiro2
2
Dissolve hot
Dissolve hot
Heat and stir the mixture to about 180 °C (the temperature the patent gives for its other compositions) until it is one homogeneous liquid. Work under a hood.
Ibikoresho bikenewe:
Isafuriya nini y'icyuma kitagira ingese
Ubwogero bw'amavuta
Urubaho rushyushya
Igikoresho cyo kuvanga
Igipima Ubushyuhe cy'Ubushakashatsi
Akabati k'umwotsi (gafite umuyoboro)
Uturindantoki twihanganira ubushyuhe
Amadarubindi yo Kwirinda Ibinyabutabire3
3
Cool to a rubbery solid
Cool to a rubbery solid
Pour it out and let it cool: it sets to a stiff, rubbery gel. More plasticiser gives a softer, more stretchy product; less gives a harder, stronger one.
Ibikoresho bikenewe:
Isahani yo guhoza umuceri ufatanaUturindantoki twihanganira ubushyuhe4
4
Cut into pellets
Cut into pellets
Ours: cut the cooled compound into pellets for the extruder. The patent extrudes the compound, for example as insulation around wire.
Ibikoresho bikenewe:
Imashini ikata utubutoIbikoresho
3- 8 partsUmwanya
- 3 partsUmwanya
- 3 partsUmwanya
Ibikoresho bikenewe
11- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
Akaga
PVC Resin: Vinyl Chloride Polymerised in Water without Emulsifier
na Charlie
By'Inganda
6
0
0
0
0
0
Akaga
Tricresyl Phosphate: Cresol and Phosphorus Oxychloride over Magnesium Chloride
na Charlie
By'Inganda
3
0
0
0
0
0
Akaga
Dibutyl Phthalate: Phthalic Anhydride and Butyl Alcohol, Water Drawn Off under Vacuum
na Charlie
By'Inganda
6
0
0
0
0
0
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.