如何测试食品纸的耐油和防潮性能？
创建于04.22
Ukuze uhlole iphepha lokudla lokumelana namafutha nokwaziswa, sebenzisa lezi zindlela ezihlelwe kahle, eziqala ezivivinyweni ezilula ezisebenzayo ziye ezinqubweni ezijwayelekile:
Ukwahlwa Kwe-Oil Resistance
1. Simple Oil Application Test
- Materials: Iziqhamo zezitshalo, i-dropper, i-timer, iphepha elimhlophe.
- Procedure:
1. Beka iifood paper kwi white tissue.
2. Faka amafutha angu-2 kuya kwangu-3 ephepheni.
3. Lindela imizuzu engu-15–30.
4. Bheka ithishu ukuze ubone izikhala ze-oyela. Akukho zikhala zikhombisa ukumelana okuhle.
2. Kit Test (Standardized Method)
- Standard: TAPPI T 507 or ASTM D722.
- Materials: Kit test solutions (liquids ze surface tension numbered 1–12).
- Procedure:
1. Faka izixazululo (uqala ezibhalwe phansi) ephepheni.
2. Bheka ukufaka (ukukhanya/ukucaca).
3. Inombolo ephezulu engaphumeleli ibala izinga lokumelana negrease.
3. Ijolowo ti a mu ki o ni awọ Test
- Materials: Olie gemeng met voedselkleurstof.
- Procedure:
1. Faka i-oyili ebomvu ephepheni.
2. Bheka ingemuva ukuze ubone ukudluliselwa kombala.
3. Ukungena okusheshayo kukhombisa ukumelana okuphansi.
Moisture Resistance Testing
1. Uhlolo lweMvula
- Materials: 水, 滴管, 计时器.
- Procedure:
1. Beka i-ndwangu ye-mvula ephepheni.
2. Bheka isikhathi sokumunca. Ukubumba kukhombisa ukumelana; ukumunca okusheshayo kukhombisa ukumelana okuphansi.
2. Cobb Test (Standardized)
- Standard: ASTM D3285.
- Materials: Cobb tester, distilled water, scale.
- Procedure:
1. Gcina iphepha kwi-Cobb ring.
2. Yongeza amanzi imizuzwana engama-30 (noma isikhathi esichaziwe).
3. Misa uremu wokuya emva kokuhlolwa. Ukunciphisa ukumuncwa = ukumelana okungcono.
3. Ukulinganisa kwe-Angle Yokuxhumana
- Amathuluzi: I-goniometer yokuthinta angulo.
- Procedure:
1. Beka i-ndwangu ye-mvula ephepheni.
2. Measure the angle formed. Larger angles (>90°) indicate higher hydrophobicity.
Izikhumbuzo Jikelele
- Controls: B comparar con un papel resistente conocido.
- Environment: Conduct tests at standard temperature/humidity (e.g., 23°C, 50% RH).
- Quantitative Analysis: Weigh paper before/after exposure to measure absorption.
Izi zindlela zilinganisa ubulula bokusebenzisa ekhaya/nasemaphandleni kanye nokunemba ezindaweni zokuhlola, kuqinisekisa ukuhlolwa okujulile kokumelana nokwaziswa kwefutha kanye nomswakama ephepheni lokupakisha ukudla.
Ray
Ferrill
Evelyn