| 摘要: |
| 本试验利用现代测试手段比较研究了国产5种高吸水性树脂,区分出吸水与溶胀两种不同性质.一般所称的吸水量实际是溶胀度。水中溶有盐类时,强烈降低其溶胀度。试验证明,在田间其吸水量和溶胀度不如报道的多,吸水力也较弱,大部分小于1bar。无论是所吸或溶胀的水皆易供作物利用,但也易被周围较干土壤吸收。本试验为正确使用这类高吸水剂提供了依据。 |
| 关键词: 高吸水性树脂 吸水量 溶胀度 |
| DOI： |
|
| 基金项目: |
|
| STUDY ON WATER RETAINING PROPERTIES OF SEVERAL SYNTHETIC RESINS |
|
|
|
| Abstract: |
| 5 species of so-calledhigh water retaining synthetic resinsmanufactured by different laboratories and factories in China were employed for the study. Two mechanisms of water retention by thoes synthetic resins were found:absorp- tion and imbibition.Absorption is a very slow process.It requires a length of several months to attain equilibrium.The amount of absorption(absorbing capacity,g/g)ranges from 30-70 or even less.Imbibition in distilled water may attain to a value of several hundred times over the wei... |
| Key words: high water retaining resins absorbing capacity imbibition |
