National Engineering Research Center for Compounding and Modification of Polymeric Materials

Guiyang, China

National Engineering Research Center for Compounding and Modification of Polymeric Materials

Guiyang, China

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Zhang K.,Shanghai University | Zhang K.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Guo Q.,Shanghai University | Guo J.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Zhang D.,National Engineering Research Center for Compounding and Modification of Polymeric Materials
Advanced Materials Research | Year: 2013

The effects of polypropylene grafted with maleic anhydride (PP-g-MA) and epoxy resin (ER) on the interfacial interaction of the long glass fiber reinforced PP composites were investigated by means of scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and mechanical properties. The experimental results demonstrate that PP-g-MA and ER could effectively improve interfacial interaction between the PP and LGF. Based on SEM, good interfacial adhesion between PP and LGF in PP/ PP-g-MA/ER/LGF composite was observed. DSC results showed that the existense of PP-g-MA or ER caused crystallization temperature shift to low temperature, and melting temperature shift to high temperature. All results in this paper were consistent, and showed the good interaction between PP and LGF, which were proved by the mechanical properties of the composites. © (2013) Trans Tech Publications, Switzerland.


He X.T.,Guizhou University | Zhang Q.,Guizhou University | Qin S.H.,National Engineering Research Center for Compounding and Modification of Polymeric Materials
Advanced Materials Research | Year: 2014

According to the type of Guizhou marine sedimentary phosphorus ore, the main reason of refractory is the similar surface properties of collophane and dolomite. In addition, the interaction of dissolved components of mineral and external ion leads the new eguilibrium system in aqueous solution, which further affects the selective adsorption of the agent in mineral surface. Selecting collophanite-dolomite system as the research object, this article studies the effect of the interaction of some inorganic anions on the floatability difference of the two minerals in the flotation system. The effect of the interaction on the electric properties of the mineral surface and adsorption characteristics were also examined with the purpose to find out the interaction mechanism. It hopes to provide theoretical basis for practical mineral selection. The research findings shows that in the range of pH 3 to 5, the interaction of PO4 3- and SO4 2- has a better effect of the separation between collophanite and dolomite. The interactions of SiO3 2- and CO3 2- makes the floatability difference of collophanite and dolomite closer when the pH is greater than 9.25, and simultaneously shows some negative effects on the flotation separation of the two minerals. © (2014) Trans Tech Publications, Switzerland.


Zhang D.-H.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | He M.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | He M.,Guizhou University | Guo J.-B.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Zhang K.-Z.,National Engineering Research Center for Compounding and Modification of Polymeric Materials
Acta Polymerica Sinica | Year: 2014

A series of long glass fiber reinforced polystyrene composites with different contents of compatibilizer were prepared by using a self-designed impregnation device. The matrix resin is polystyrene, the compatibilizer is polystyrene grafted maleic anhydride, and the toughening agent is a thermoplastic polyurethane elastomer. Effects of compatibilizer content on performance of long glass fiber reinforced polystyrene composites were studied. The results demonstrates that the storage modulus of long glass fiber reinforced polystyrene composites first increases and then decreases with increasing compatibilizer content, which predicts that the mechanical properties of long glass fiber reinforced polystyrene composites first increase and then decrease with increasing compatibilizer content; the tanδ values of long glass fiber reinforced polystyrene composites first decrease and then increase with increasing compatibilizer content, which demonstrates that the compatibility of the composites first increases and then decreases with increasing compatibilizer content; SEM results demonstrated that glass fibers were coated by the matrix resins, when the compatibilizer was added into the composites, and the compatibility mechanism was analyzed.


Lu P.,Guizhou University | Lu P.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Yu J.,Guizhou University | Yu J.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | And 7 more authors.
Sensors and Actuators, B: Chemical | Year: 2014

A novel composite film of nickel oxide hollow spheres (NiOHSs)-reduced graphene oxide (RGO)-nafion (NF) modified glassy carbon electrode (NiOHSs-RGO-NF/GCE) was successfully fabricated via a facile, effective and general strategy and applied in the sensitive and selective determination of glucose. The synthetized nickel oxide was characterized by the hollow spheres with porous surface. The composition, morphology, and structure of the as-prepared NiOHSs-RGO were characterized by the techniques such as Raman spectroscopy, powder X-ray diffraction, energy-dispersive X-ray spectrum, scanning electron microscopy and transmission electron microscopy. Compared with the bare GCE, RGO-NF/GCE, and NiOHSs-NF/GCE electrodes, the NiOHSs-RGO-NF/GCE had higher catalytic activity toward the oxidation of glucose. Under the optimal conditions, selective detection of glucose in a linear concentration range of 0.6246 μM-10.50 mM was obtained with the limit of 0.03 μM (3S/N). Moreover, the proposed method was successfully applied to determine glucose in real serum sample with satisfactory results. The results showed that the modified electrode exhibits an excellent catalytic activity, good selectivity, reproducibility, and long-term stability. © 2014 Published by Elsevier B.V.


Yang Y.-Y.,Zhejiang University | Zhang K.-Z.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Song Y.-H.,Zhejiang University | Zheng Q.,Zhejiang University
Chinese Journal of Polymer Science (English Edition) | Year: 2011

Environment friendly thermosetting composites were prepared by blending wheat gluten (WG) and rice protein (RP) at different weight ratios with glycerol as plasticizer followed by compression molding the mixture at 120°C to crosslink the proteins. Reducing agent of sodium bisulfate and sodium sulfite and crosslinking agent formaldehyde were used to adjust the properties of the composites. Morphology, moisture absorption and tensile properties were evaluated. The results showed that formaldehyde could increase tensile strength of the composites without significant influence on Young's modulus and elongation at break. On the other hand, reducing agents could improve tensile strength and extensibility simultaneously, which was much marked at WG/RP ratios from 7/3 to 3/7. © 2010 Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg.


Zhu X.,Zhejiang University | Song Y.,Zhejiang University | Song Y.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Chen S.,Zhejiang University | And 3 more authors.
Polymer International | Year: 2011

An acrylate processing aid (ACR)-based ionomer containing lanthanide (La(III)) ion was synthesized and the influences of the ionomer on thermal stability, fusion time, transparency and tensile properties of rigid poly(vinyl chloride) (PVC) were investigated. Results revealed that the ionomer with a suitable La(III) content behaved as a good stabilizer as well as processing aid to the rigid PVC product. The ionomer could accelerate fusion of PVC much more quickly than ACR because of the strong interaction between La(III) carboxylate and PVC. Moreover, it exhibited a stabilizing efficiency comparable to lanthanum and calcium stearates (LaSt3 and CaSt2). The composite stabilizer of ionomer/zinc stearate (ZnSt2) exhibited an ability to improve initial discoloration better than LaSt3/ZnSt2 and CaSt2/ZnSt2 because the ionomer could form a complex with ZnSt2 much more slowly than LaSt3 and CaSt2. The compounds stabilized using ionomer/ZnSt2 exhibited a transparency comparable to those stabilized using organotin or liquid barium/zinc stabilizers, which was much better than those stabilized using LaSt3/ZnSt2 and CaSt2/ZnSt2. © 2011 Society of Chemical Industry.


Shan Z.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Qin S.H.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Wei L.Q.,National Engineering Research Center for Compounding and Modification of Polymeric Materials
Applied Mechanics and Materials | Year: 2014

Designed the weld line quantization algorithm based on the moldflow secondary development of technology, obtained the numerical experimental data of weld line with this. Analyzed of the impact of the relationship between the process parameters and weld line, and optimized the process parameters by orthogonal experimental design. These provided an important basis for the forming process design. © (2014) Trans Tech Publications, Switzerland.


Guo J.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Zhang K.,National Engineering Research Center for Compounding and Modification of Polymeric Materials
Advanced Materials Research | Year: 2012

Poly (ethylene 1-octene) (POE) was functionalized to varying degrees with maleic anhydride (MA) by melt grafting processes. Fourier transform infrared spectra (FT-IR) confirmed that maleic anhydride was successfully grafted onto the POE. The POE-g-MAH elastomers were used to toughen Polybutylene terephthalate(PBT). The mechanical properties, morphology and the dispersal phase size were investigated. Results showed that the grafting degree strongly influenced the morphology, mechanical properties and the dispersal phase size. All results in this paper were consistent, and showed good interaction between POE and PBT, which was proven by the mechanical properties of blends. © (2012) Trans Tech Publications, Switzerland.


Zhang D.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Guo J.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Zhang K.,National Engineering Research Center for Compounding and Modification of Polymeric Materials
Journal of Thermoplastic Composite Materials | Year: 2015

The polypropylene-long glass fiber (PP/LGF) composites were prepared using self-designed impregnation device. The mechanical properties and dynamic mechanical properties of PP/LGF composites with two different compatibilizers including PP grafted with glycidyl methacrylate (PP-g-GMA) and maleic anhydride-grafted PP copolymer (PP-g-MA) were investigated on injection molding standard bars. The experimental results demonstrated that the addition of PP-g-GMA led to decrease in mechanical properties and storage modulus. However, it is found that the maximum mechanical properties and storage modulus are reached for the PP/LGF composites when PP-g-MA are 7 wt%. Moreover, PP-g-MA is better than PP-g-GMA in the PP/LGF composites. © The Author(s) 2013.


Shan Z.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Luo H.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Qin S.H.,National Engineering Research Center for Compounding and Modification of Polymeric Materials
Applied Mechanics and Materials | Year: 2014

For getting rid trial-and-error method of polymer blending modification depends on experience, nonlinear relation of polymer ratio and its properties is obtained by Support Vector Machine and Genetic Algorithm. While the application of genetic algorithms to optimize the SVM model. Decision function in the relational model of SVM as the objective function, and optimized the value of polymer properties and its ratio by genetic algorithms. Experiments show that the method has some values. © (2014) Trans Tech Publications, Switzerland.

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