| Effect of Treatment of NR to Maintain Constant Viscosity on Its Properties |
| Received:November 09, 2018 Revised:November 09, 2018 |
| DOI：10.12136/j.issn.1000-890X.2019.09.0675 |
| Key Words: NR；constant viscidity treatment；natural rubber latex；coagulum；hydroxylamine hydrochloride；Mooney viscosity |
| Author Name | Affiliation | E-mail | | ZHANG Guimei | Yunnan Institute of Tropical Crops | zgm1027@163.com | | JIANG Shi-kuan | Yunnan Institute of Tropical Crops | | | YAN Li | Yunnan Institute of Tropical Crops | | | XU Rong | Yunnan Institute of Tropical Crops | | | ZOU Jianyun* | Yunnan Institute of Tropical Crops | zoujianyunbn@sina.com |
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| Abstract: |
| The effects of three different treatment methods of natural rubber（NR） to produce constant
viscosity NR，including adding hydroxylamine hydrochloride to flash natural rubber latex，soaking natural
coagulum granules in hydroxylamine hydrochloride solution and spraying hydroxylamine hydrochloride
solution to natural coagulum granules，on the properties of NR were studied. The results showed that after
treatment，the initial plasticity number and Mooney viscosity of NR decreased，the plasticity retention
index increased，and tensile properties deteriorated. All of the three treatment methods reduced the Mooney
viscosity of NR effectively，and the viscosity retention of the compound treated by using the first method was
the best while that of the compound treated by using the last method was the worst. |
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