UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
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.
Ophakathi
Half a day
Imiyalelo
1
1
Weigh 8 : 3 : 3
Weigh 8 : 3 : 3
Weigh 8 parts PVC resin, 3 parts tricresyl phosphate and 3 parts dibutyl phthalate.
Izinto zokwakha zalesi sinyathelo:
I-PVC resin8 parts
Tricresyl Phosphate3 parts
Dibutyl Phthalate3 partsAmathuluzi adingekayo:
Isikali sesilinganiso2
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.
Amathuluzi adingekayo:
Ibhodwe elikhulu lensimbi engagqwali
Ibhavu Likawoyela
Ipuleti Elishisayo
Isigovuzi
Ithemomitha Yaselabhorethri
Ikhabethe lomusi (elinepayipi)
Amagilavu Amelana Nokushisa
Izibuko Zokuchitheka Kwamakhemikhali3
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.
Amathuluzi adingekayo:
Ithileyi lokupholisa irayisi elinamathelayoAmagilavu Amelana Nokushisa4
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.
Amathuluzi adingekayo:
I-PelletizerIzinto
3- 8 partsIsibambeli
- 3 partsIsibambeli
- 3 partsIsibambeli
Amathuluzi Adingekayo
11- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
Le blueprint yenza
Ama-blueprint ahlobene
Lama-blueprint abelana ngolwazi — amasu, izinto noma izimiso
Yingozi
PVC Resin: Vinyl Chloride Polymerised in Water without Emulsifier
ngu-Charlie
Kwezimboni
6
0
0
0
0
0
Yingozi
Tricresyl Phosphate: Cresol and Phosphorus Oxychloride over Magnesium Chloride
ngu-Charlie
Kwezimboni
3
0
0
0
0
0
Yingozi
Dibutyl Phthalate: Phthalic Anhydride and Butyl Alcohol, Water Drawn Off under Vacuum
ngu-Charlie
Kwezimboni
6
0
0
0
0
0
CC0 Isizinda Somphakathi
Le blueprint ikhishwe ngaphansi kwe-CC0. Ukhululekile ukukopisha, ukuguqula, ukusabalalisa, nokusebenzisa ngaphandle kwemvume.
Sekela uMenzi ngokuthenga imikhiqizo nge-Blueprint yabo IKhomishane Yomenzi kumiswe ngabathengisi, noma dala inguqulo entsha yale Blueprint bese uyifaka njengoxhumaniso ku-Blueprint yakho ukuze wabelane ngemali engenayo.