कला
सुन्दरता र कल्याण
हस्तकला
संस्कृति र इतिहास
मनोरञ्जन
वातावरण
खाना र पेय
रिभर्स इन्जिनियरिङ
विज्ञान
खेलकुद
प्रविधि
पहिर्न मिल्ने
Plasticised PVC (Plastisol)
PVC was known for decades as a hard, brittle powder nobody could use. In 1926 Waldo Semon at B.F. Goodrich found that certain liquids dissolve it only when hot, and that the hot solution sets on cooling into a soft, rubber-like gel - flexible PVC.
**US 1,929,453**, "Synthetic rubber-like composition and method of making same", Semon, assigned to B.F. Goodrich, granted 10. October 1933, claims dissolving "an insoluble polymerized vinyl halide at an elevated temperature" in a liquid that dissolves it only well above room temperature, and gelling it by cooling. One example: 8 parts PVC, 8 parts tricresyl phosphate, 3 parts dibutyl phthalate.
**Plastisol is that idea in a bottle**: PVC grains suspended, undissolved, in plasticiser. Heat makes the liquid dissolve the grains and fuse into solid flexible PVC. You bake test films at three temperatures and pull them apart to find where it truly fuses.
शुरुआती
2 hours
निर्देशनहरू
1
1
Ventilate and set the oven
Ventilate and set the oven
Use a toaster oven kept for crafts, never food, by an open window. Put the probe thermometer inside - dial settings are rarely accurate.
चाहिने औजार:
टोस्टर ओभन
भित्रै छाडिने प्रोब थर्मोमिटर
N95 श्वास मास्क2
2
Stir the plastisol
Stir the plastisol
The PVC grains settle. Stir the plastisol from the bottom for 2 minutes until even. Read the label's fusion temperature.
यस चरणका सामग्री:
प्लास्टिसोल150 मिलिचाहिने औजार:
चलाउने डण्डी3
3
Spread three films
Spread three films
On the silicone mat, spread three 100 x 40 mm films about 1.5 mm thick with the palette knife.
यस चरणका सामग्री:
प्लास्टिसोल50 मिलिचाहिने औजार:
सिलिकन बेकिङ म्याट
प्यालेट चक्कुको सेट
फलामे रुल4
4
Bake at three temperatures
Bake at three temperatures
Bake one film 10 minutes each at 130 °C, 150 °C and the label's fusion temperature (commonly 160–180 °C). Never exceed the label maximum.
चाहिने औजार:
टोस्टर ओभन
अवरक्त तापमापक
वेल्डिङका पन्जा5
5
Cool and cut strips
Cool and cut strips
Cool 10 minutes. Peel each film and cut a 10 mm strip from its centre. Mark its temperature.
चाहिने औजार:
काम चलाउने चक्कुफलामे रुल6
6
Stretch and pull
Stretch and pull
Clamp one end in the vise. Hook the spring scale to the other and pull slowly. Record the peak force and how it failed.
चाहिने औजार:
बलमापक (स्प्रिङ तराजु)
बेन्चको भाइस
सफा सुरक्षा चस्मा7
7
Recipe, cure curve, siblings
Recipe, cure curve, siblings
Jupyter नोटबुक लोड हुँदैछ…
8
8
History & Context
History & Context
**What the patent specifies:** gelling PVC in high-boiling liquids such as tricresyl phosphate and dibutyl phthalate. **Modern build (derived):** a commercial plastisol; many now use phthalate-free plasticisers.
Flexible PVC became cable insulation, shower curtains, hoses and flooring. Its limits: the plasticiser slowly migrates out, so old soft PVC stiffens and turns sticky; and overheated PVC yellows and releases hydrogen chloride, which is why the label's maximum temperature matters.
सामग्री
1- 200 मिलिप्लेसहोल्डर
आवश्यक उपकरणहरू
13- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- वेल्डिङका पन्जा10% कमिसनप्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
- प्लेसहोल्डर
सम्बन्धित ब्लुप्रिन्ट
यी ब्लुप्रिन्टहरूले ज्ञान साझा गर्छन् — प्रविधि, सामग्री वा सिद्धान्त
CC0 सार्वजनिक डोमेन
यो ब्लुप्रिन्ट CC0 अन्तर्गत जारी गरिएको छ। तपाईं अनुमति नसोधी प्रतिलिपि, परिमार्जन, वितरण र प्रयोग गर्न सक्नुहुन्छ।
ब्लुप्रिन्ट मार्फत उत्पादनहरू किनेर सिर्जनाकर्तालाई सहयोग गर्नुहोस् सिर्जनाकर्ता कमिसन विक्रेताले तोकेको, वा यो ब्लुप्रिन्टको नयाँ संस्करण बनाउनुहोस् र आम्दानी बाँड्न आफ्नो ब्लुप्रिन्टमा जडानको रूपमा समावेश गर्नुहोस्।