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Liu Y.,Tianjin Polytechnic University | Ren Y.,Tianjin Polytechnic University | Ren Y.,Key Laboratory of Advanced Textile Composite | Dong E.,Tianjin Polytechnic University
Advanced Materials Research | Year: 2011

Wood-plastic composites (WPC), a fast growing class of material used by the furniture and building industry for its excellent mechanical performance and functionality. However, WPC is easily combust because the raw material of it, i.e. wood and plastic burns so easily which result in more fire dangers of WPC. Unfortunately, in the case of WPC, few researchers have carried out to reduce its flammability which still has a long way to go. In this paper, the current development of halogen-free flame retardant WPC at domestic and abroad was reviewed. Especially, the fire retarded WPC with phosphorus, nitrogen, boron, silicon and other flame retardant elements, the fire retarded mechanism, the problems, such as poor compatability, bad resistance to heat and limitation of wood adding quantity, and the solution to the problems were emphasized. © (2011) Trans Tech Publications, Switzerland. Source

Shi Y.,Tianjin Polytechnic University | Feng Y.,Tianjin Polytechnic University | Feng Y.,Key Laboratory of Advanced Textile Composite
Advanced Materials Research | Year: 2011

With the development of industry, water pollution is increasingly severe. The research and development of oil-absorbing materials plays an important role in solving the ecological environment protection. Various oil-absorbing materials are introduced. Then, the new oil-absorbing materials are introduced mainly, including classification, production methods, oil-absorbing mechanism and properties. The limitations of the new oil-absorbing materials are pointed. And the development direction of oil-absorbing materials should be toward the high efficiency, low-cost, environmentally friendly and biodegradable. © (2011) Trans Tech Publications. Source

Chen L.,Tianjin Polytechnic University | Chen L.,Key Laboratory of Advanced Textile Composite | Chen L.,Tianjin Transportation Vocational College | Zhang R.,Tianjin Transportation Vocational College | Xie Y.-F.,Tianjin Polytechnic University
Journal of Donghua University (English Edition) | Year: 2011

Pattern design is very important for knitting industry. Fractal theory is adopted to create image automatically, which is applied to design knitted sweaters. Based on Mandelbrot set (Mset), image could be generated automatically by visual basic (VB) program. Plenty of wonderful patterns are created by the following methods: selecting any parts of the image and magnifying, extending generalized M-set, editing the selected images with photoshop. The edited pattern is used to set on any parts of clothes to show fashion effect Actual knitted structure is simulated by knitting CAD software. The results show that the fractal theory has greater potential applications in knitted pattern design, and it deserves further research. Source

Ren Y.,Tianjin Polytechnic University | Ren Y.,Key Laboratory of Advanced Textile Composite | Wang Y.,Tianjin Polytechnic University | Wang L.,Tianjin Polytechnic University | Liu T.,Tianjin Polytechnic University
Construction and Building Materials | Year: 2015

The effects of fire retardant synergistic agents zinc borate (ZB), montmorillonite (MMT), manganese dioxide (MnO2) and stannic oxide (SnO2) on the mechanical properties, thermal degradation and flame retardant performance of wood flour-recycled polypropylene composites (WPC) comprised of intumescent flame retardants (IFR) were studied. The species were characterized by thermogravimetric analysis (TGA), limiting oxygen index (LOI), UL-94 tests, and cone calorimeter measurements. The results showed that the synergistic effect between IFR and ZB or MnO2 was greater than that of MMT or SnO2. The addition of 5 wt% of ZB or MnO2, MMT and SnO2 created fire retardant WPC with a V0 rating, exhibiting excellent fire retardancy. © 2014 Elsevier Ltd. All rights reserved. Source

Liu S.,Tianjin Polytechnic University | Yang K.,Tianjin Polytechnic University | Yang K.,Key Laboratory of Advanced Textile Composite
Proceedings of ICCIA 2010 - 2010 International Conference on Computer and Information Application | Year: 2010

In order to investigate the knittability of high-performance fiber, the method that the curvature radius of the needle loops is employed to investigate the knitting action of high-performance fibre. The carbon fiber and the UHMW-PE fiber were knitted into the plain knitted structure and 1 x 1 rib structure with three different DSC values. Images of the knitting action were taken by using a digital camera, then the images were treated and analyzed, and the geometrical equation of the curve of the needle loop was fitted by using a polynomial function and the curvature radius of needle loop was calculated. The results of the experiments indicate that the material and the DSC value are two important influence factors. These results show that the method is effective for investigating the knittability of high-performance fibre. © 2010 IEEE. Source

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