IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
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.
Àárín
Half a day
Ìlànà
1
1
Weigh 8 : 3 : 3
Weigh 8 : 3 : 3
Weigh 8 parts PVC resin, 3 parts tricresyl phosphate and 3 parts dibutyl phthalate.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Résínì PVC8 parts
Tricresyl Phosphate3 parts
Dibutyl Phthalate3 partsÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba2
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.
Àwọn irinṣẹ́ tí a nílò:
Ìkòkò ńlá irin tí kò kán
Ìwẹ̀ Epo
Pátákó Gbígbóná
Ohun ìrúwé
Ẹ̀rọ Ìwọ̀n Ooru Yàrá Ìwádìí
Àpótí eérú (tí ó ní ọ̀pá ìjáde)
Ìbọ̀wọ́ Tí Ń Fara Da Ooru
Gílásì Ààbò Fún Ìfọ́n Kẹ́míkà3
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.
Àwọn irinṣẹ́ tí a nílò:
Àwo ìtutù ìrẹsì alálẹ̀mọ́Ìbọ̀wọ́ Tí Ń Fara Da Ooru4
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.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ Ìṣe Pẹ́lẹ́ẹ̀tìÀwọn ohun-èlò
3- 8 partsÀyè
- 3 partsÀyè
- 3 partsÀyè
Àwọn irinṣẹ́ tó nílò
11- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
Léwu
PVC Resin: Vinyl Chloride Polymerised in Water without Emulsifier
láti ọwọ́ Charlie
Ti Ilé-iṣẹ́
13
0
0
0
0
0
Léwu
Tricresyl Phosphate: Cresol and Phosphorus Oxychloride over Magnesium Chloride
láti ọwọ́ Charlie
Ti Ilé-iṣẹ́
10
0
0
0
0
0
Léwu
Dibutyl Phthalate: Phthalic Anhydride and Butyl Alcohol, Water Drawn Off under Vacuum
láti ọwọ́ Charlie
Ti Ilé-iṣẹ́
12
0
0
0
0
0
CC0 Àgbègbè Gbogbogbò
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