Influence of silane/MaPE dual coupling agents on the rheological and mechanical properties of sawdust/rubber/HDPE composites
Source abstract
Abstract
Abstract Proper utilization of recycled rubber is of high environmental and resource concern. In this study, a composite (COMP) was created based on high-density fiberboard sawdust (HDFS), ground tire rubber (GTR) particles and virgin high-density polyethylene (HDPE) with the ratio of HDFS:GTR:HDPE=30:21:49 and with 1% PE wax as lubricant. A dual coupling agent system, i.e. bis-(triethoxysilylpropyl) tetrasulfide (TESPT, up to 5% based on the COMP total weight) together with maleated polyethylene (MaPE, 3, 5 and 8% based on the COMP weight), was applied. The rheological properties of the hybrid during the extrusion process was evaluated in a HAAKE miniLab rheometer, and the bending and tensile properties of injected COMP were tested. The results showed that addition of MaPE and TESPT has an evident influence on the shear viscosity and stress of the COMP fluid, and the two coupling chemicals have synergetic effects. Increased content of MaPE and/or TESPT improved the tensile and bending strength of the COMP, while excessive addition of TESPT (over 1%) decreased the bending modulus. To conclude, a dual coupling system, 5% MaPE plus 1% TESPT, seems to be advantageous for the COMP behavior.
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Research context
OpenAlex topics: Natural Fiber Reinforced Composites · Tribology and Wear Analysis · Polymer crystallization and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Materials Science and Engineering, Nanjing Forestry University , Nanjing 210037 , P.R. China
Dehua Tubaobao Institute of Decoration Materials , Deqing 313218 , P.R. China
References (25)
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