Influence of silane/MaPE dual coupling agents on the rheological and mechanical properties of sawdust/rubber/HDPE composites
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Xinwu Xu
,
Ling Chen
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.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The authors are grateful for the support from Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), Key Project of Zhejiang Province (2017C01117), National Natural Science Foundation of China (nos. 31400505, 31770609) and the Analysis and Test Center of Nanjing Forestry University.
Employment or leadership: None declared.
Honorarium: None declared.
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Phylogenetic analysis of Aquilaria Lam. (Thymelaeaceae) based on DNA barcoding
- The complete plastome of real yellow wood (Podocarpus latifolius): gene organization and comparison with related species
- Calibration of near infrared spectroscopy (NIRS) data of three Eucalyptus species with extractive contents determined by ASE extraction for rapid identification of species and high extractive contents
- Formation of heartwood, chemical composition of extractives and natural durability of plantation-grown teak wood from Mexico
- Investigations on densified beech wood for application as a swelling dowel in timber joints
- Variation of the contents of biphenyl structures in lignins among wood species
- Activation of glucose with Fenton’s reagent: chemical structures of activated products and their reaction efficacy toward cellulosic material
- Purification of pulp mill condensates by an adsorptive process on activated carbon
- Preparation of mineral bound particleboards with improved fire retardant and smoke suppression properties based on a mix of inorganic adhesive
- Influence of silane/MaPE dual coupling agents on the rheological and mechanical properties of sawdust/rubber/HDPE composites
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Phylogenetic analysis of Aquilaria Lam. (Thymelaeaceae) based on DNA barcoding
- The complete plastome of real yellow wood (Podocarpus latifolius): gene organization and comparison with related species
- Calibration of near infrared spectroscopy (NIRS) data of three Eucalyptus species with extractive contents determined by ASE extraction for rapid identification of species and high extractive contents
- Formation of heartwood, chemical composition of extractives and natural durability of plantation-grown teak wood from Mexico
- Investigations on densified beech wood for application as a swelling dowel in timber joints
- Variation of the contents of biphenyl structures in lignins among wood species
- Activation of glucose with Fenton’s reagent: chemical structures of activated products and their reaction efficacy toward cellulosic material
- Purification of pulp mill condensates by an adsorptive process on activated carbon
- Preparation of mineral bound particleboards with improved fire retardant and smoke suppression properties based on a mix of inorganic adhesive
- Influence of silane/MaPE dual coupling agents on the rheological and mechanical properties of sawdust/rubber/HDPE composites
