文章摘要
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 NameAffiliationE-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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