文章摘要
Study of preparation and properties for PU/NBR Chemical-grafted water swelling rubber
Received:December 22, 2015  Revised:December 22, 2015
DOI：
Key Words: Polyurethane; NBR; Chemical-grafted; Repeated Water Expansion Properties
Author NameAffiliationE-mail
Li Zaifeng* Key Laboratory of Eco-chemical Engineering of State Cultivation Base,Qingdao university of Science and Technology,Qingdao lizfengphd@126.com 
Hu Xiaoyun Key Laboratory of Eco-chemical Engineering of State Cultivation Base,Qingdao university of Science and Technology,Qingdao  
Jiang Yuxiang Key Laboratory of Eco-chemical Engineering of State Cultivation Base,Qingdao university of Science and Technology,Qingdao  
Wang Xiaohuan Key Laboratory of Eco-chemical Engineering of State Cultivation Base,Qingdao university of Science and Technology,Qingdao  
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Abstract:
      Water-absorbing polyurethane (PU) reactive macromolecular resin was synthesized by step-reaction polymerization reaction with polyethylene glycol, toluene diisocyanate and hydroxyethyl methacrylate as raw materials. The salt-resistance water-swellable NBR rubbers were processed by graft radical reaction of PU resin with the double bond of nitrile butadiene rubber. The influence of the relative content of PU resin among the mixture of PU with SAP and DCP on the mechanical properties and the maximum mass swelling ratio(ΔWe) of the WSR were studied, respectively, the repeat water swellable efficiency was also studied. The results showed that with an increase of PU content in the mixture of PU and SAP, both the mechanical properties and the maximal mass swelling ratio(ΔWe) of WSR increased. When SAP resin was replaced by PU, the higher content of DCP in WSR, the lower overall properties. When the content of DCP was 2 phr, the ΔWekeep above 2.04. The repeatable water swellable efficiency kept above 98%.
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