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Zhang Q.,Tianjin Polytechnic University | Zhang Q.,Key Laboratory of Advanced Textile Composite | Yang W.,Tianjin Polytechnic University | Yang W.,Key Laboratory of Advanced Textile Composite | And 4 more authors.
Advanced Materials Research | Year: 2011

As the problem of shrinkage on wool fabric, the chitosan was applied to solve it in this paper. The volume of retraction bulb and strength were considered to describe the results of anti-shrinkage after the finishing. It shows that great anti-shrinkage is got in this experiment, and the best treatment process is defined as follow: the concentration of chitosan 6g/l, pH 5, 80min, 90°C and bath ratio 1:50. © (2011) Trans Tech Publications, Switzerland.


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.


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.


Jia J.-R.,Tianjin Polytechnic University | Jia J.-R.,Key Laboratory of Advanced Textile Composite | Yao J.-B.,Tianjin Polytechnic University | Yao J.-B.,Key Laboratory of Advanced Textile Composite
Wool Textile Journal | Year: 2015

Waste wool is one of important and inexpensive keratin resources, which has a very high research value. The dissolved extractions methods of wool keratin were described, such as reduction, acid and alkali method, ionic liquid method, oxidation method, metal salt method, enzymatic method, molten urea method, etc, as well as build on new extraction methods. The applications of wool keratin in areas such as functional finishing of textiles, biomedical materials, composite materials regeneration of keratin membrane and electrostatic spinning and so on were also mentioned. The problems and future in the dissolution and recycling of wool keratin were stated.


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.


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.


Dong E.Y.,Tianjin Polytechnic University | Ren Y.L.,Key Laboratory of Advanced Textile Composite | Jin Y.S.,Tianjin Polytechnic University
Advanced Materials Research | Year: 2013

The flame retardancy, thermal degradation, morphological properties, chemical composition of wood flour-plastic composites have been investigated. Ammonium polyphosphate (APP), melamine (MEL) and dipentaerythritol (DPER) were used as intumescent flame retardants. The Limited oxygen index (LOI) and thermogravimetric analysis (TGA) were employed for the study of fire retardance. According to the results obtained from the experiments, the LOI and the char residue of the fire retarded composites increased from 18.1% and 10.1% to 33.9% and 24.2%, respectively. And the thermal stability also became better. From the SEM pictures we visually observed that there are lots bubbles on the surface of the retarded composites not neat composite. FTIR also reflected its chemical composition changing more or less. Overall, ratios of flame retardant monomers had significant impact on fire resistance of wood-flour/PE composites. © (2013) Trans Tech Publications, Switzerland.


Huang J.,Tianjin Polytechnic University | Zhong Z.,Tianjin Polytechnic University | Zhong Z.,Key Laboratory of Advanced Textile Composite | Liu H.,Tianjin Polytechnic University | Bao J.,Tianjin Polytechnic University
Applied Mechanics and Materials | Year: 2012

The tensile properties of basalt filament were measured and compared with these of E-glass fiber. The plain basalt filament fabric (PBFF), twill basalt filament fabric (TBFF) and plain glass filament fabric (PGFF) that woven by the CSW-03 loom under the same fabric density were used to make diaphragm preforms. Thermoplastic acrylic resin was chosen to coat on the diaphragm preforms using Werner Mathis AG LTF97885 coating machine when the coating thickness is 0.1mm, curing time is 30min. Tensile tests were carried out on the diaphragm performs and coating diaphragm by 3380Instron advanced testing machine. Effect of curing temperature (<200 °C) on tensile properties of diaphragm materials was investigated. The coating PBFF and the coating TBFF were compared to analysis the effect of organization structures on the elastic modulus. The results indicated that the best elastic modulus of diaphragm materials was achieved when the curing temperature was 120 °C. PBFF is more suitable for diaphragm materials than PGFF and TBFF. The proposed curing temperature for making diaphragm with different elastic modulus ranges from 100 °C to 140 °C. © (2012) Trans Tech Publications, Switzerland.


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.


Yu J.,Tianjin Polytechnic University | Ren Y.,Tianjin Polytechnic University | Ren Y.,Key Laboratory of Advanced Textile Composite | Liu T.,Tianjin Polytechnic University | Wang L.,Tianjin Polytechnic University
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2015

In order to increase hydrophilic property of polypropylene (PP) meltblown nonwoven, acrylic acid (AA) was successfully graft polymerized onto polypropylene meltblown nonwoven (PP-g-AA) via UV irradiation technique with diphenyl ketone (BP) as photo initiator. The effect of UV irradiation time, monomer and initiator concentration and solvent on grafting percent (GP) was studied. The structure of PP-g-AA was characterized by FT-IR, XPS and SEM, and the water contact angle, wetting time and absorbency were all tested. The results indicate that the increase of BP or AA concentration can make the GP increase rapidly, then the GP decreases. With the UV irradiation time prolonging, the GP firstly increases and then becomes smooth. The polar solvent is benefit to graft polymerization. The water contact angle decreases from 132° to 68.75° and the wetting time shortens to 14.5 s when the GP is about 280%. The PP-g-AA sample can reach the equilibrium water absorption rate within 2 h when the GP is over 178%, showing excellent hydrophilicity. ©, 2015, Chengdu University of Science and Technology. All right reserved.

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