Since RBF neural network is likely to converge to local minimum and has low learning efficiency, we proposed an improved neural network in this paper. Our proposed network transmit the output of the hidden node to its...
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In this study, the optimized manufacturing process of Shrub Scrimber has been researched by using orthogonal experiment. The dynamic mechanical properties of Shrub Scrimber were measured by Fast Fourier Transform (FFT...
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Production of dissolving pulp by means of the Kraft process has received much attention these days in Canada. In this process, wood chips are pretreated with steam before Kraft pulping. This steaming leads to dissolut...
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A wall insulation material with good heat insulation and fire resistance was prepared by in-situ compounding of the inorganic glazed hollow bead (GHB) and fire-resistant polyurethane (PU). The effects of GHB particle ...
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A wall insulation material with good heat insulation and fire resistance was prepared by in-situ compounding of the inorganic glazed hollow bead (GHB) and fire-resistant polyurethane (PU). The effects of GHB particle size and polyol species on the structures and performance of foam composite were investigated by SEM, oxygen index and mechanical evaluation. Test results indicate that the GHB particle size has significant influences on the bubble structure of foam composites. Both strength-to-mass ratio and oxygen index of foam composites are even-increasing upon decreasing the GPB particle size. Due to various molecular weights and functionality that affect he reaction rate between polyisocyanate and polyols, the polyether polyols species influence the foaming properties, microstructures and some performances of the foam composites to some extent.
Ultra stable Y type(USY) zeolite and HUSY zeolite were applied to catalytic cracking of wood-plastic composite(WPC) fast pyrolysis vapors using analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). Com...
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Basalt fibers (BFs) were surface-treated with γ-aminopropyltriethoxysilane (KH-550) coupling agent to improve the mechanical properties of wood fiber reinforced high density polyethylene (HDPE) composites. Basalt fib...
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Basalt fibers (BFs) were surface-treated with γ-aminopropyltriethoxysilane (KH-550) coupling agent to improve the mechanical properties of wood fiber reinforced high density polyethylene (HDPE) composites. Basalt fibers were characterized by SEM and FT-IR. The effects of the basalt fiber content and apparent morphology on the mechanical properties of the hybrid composites were investigated in this paper. Results showed that BF coated with γ-aminopropyltriethoxysilane coupling agent contributed to an improvement in mechanical properties due to the increased interfacial compatibility between BF and HDPE. The tensile and impact properties increased obviously with 4 wt% treated basalt fibers.
High density polyethylene composites (WPC) filled with 60% wood fibers (10~20, 20~40, 40~80, and 80~120 meshes) were prepared by extrusion, extrusion compound-hot pressing, extrusion compound-compression molding, and ...
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High density polyethylene composites (WPC) filled with 60% wood fibers (10~20, 20~40, 40~80, and 80~120 meshes) were prepared by extrusion, extrusion compound-hot pressing, extrusion compound-compression molding, and forming mat-compression molding. The flexural properties of these WPCs were investigated. The results show that preparation method has a significant effect on the flexural properties of WPC. Extrusion provides WPC the best flexural property and follow by the extrusion compound-hot pressing. While forming mat-compression molding gives the lowest bending strength and extrusion compound-compression molding gives the poorest elastic modulus. 20-40 mesh fiber is a good choice for preparing WPC.
The decay of wood and other cellulosic materials by fungi cause significant economic loss. The widely used chromated copper arsenate was prohibited for the environmental impact and safety of arsenic and chromium. It w...
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Ultra stable Y type(USY) zeolite and HUSY zeolite were applied to catalytic cracking of wood-plastic composite(WPC) fast pyrolysis vapors using analytical pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS).Compa...
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ISBN:
(纸本)9781479933372
Ultra stable Y type(USY) zeolite and HUSY zeolite were applied to catalytic cracking of wood-plastic composite(WPC) fast pyrolysis vapors using analytical pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS).Compared with the results of non-catalytic pyrolysis,there was a dramatic increase in the concentration of olefins and aromatic compounds of the derived pyrolytic *** catalysts significantly reduced aldehydes,acetic acid and *** addition,levoglucosan was completely eliminated after *** results showed that both USY and HUSY zeolite exhibited high activity in the decarboxylation and decarbonylation of the pyrolytic products,and USY performed better than HUSY.
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