Guizhou Kumkuat Materials Ltd.

Guiyang, China

Guizhou Kumkuat Materials Ltd.

Guiyang, China
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Zhang J.,Guizhou University | Zhang J.,National Engineering Research Center for Compounding and Modification of Polymer Materials | He M.,Guizhou University | He M.,Guizhou Kumkuat Materials Ltd. | And 9 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2015

N-phenylmaleimide-maleic anhydride copolymers(NMA) were synthesized by solution polymerization and the structure of the copolymer was characterized through FT-IR. Nylon 6/N-phenylmaleimide-maleic anhydride(PA6/NMA) blends were prepared by melt blending method. The structure and properties of blends were investigated by SEM, DSC, TGA, heat distortion tester and rotational rheometer. FT-IR confirms that the N-PMI content in NMA increases with increment of N-PMI feeding amount; DSC and TGA show that the melting temperature and crystallinity decrease, the thermal stability of PA6 increases after NMA modified; the heat distortion temperature and mechanical properties of blends decrease first and then increase with decrease of N-PMI content; SEM and rotational rheometer confirm that the adhesion of PA6 and NMA increases with decrement of N-PMI content. ©, 2015, Chengdu University of Science and Technology. All right reserved.


Guo J.,National Engineering Research Center for Compounding and Modification of Polymer Materials | He M.,Guizhou Kumkuat Materials CO. | Li Q.,National Engineering Research Center for Compounding and Modification of Polymer Materials | Yu J.,National Engineering Research Center for Compounding and Modification of Polymer Materials | Qin S.,National Engineering Research Center for Compounding and Modification of Polymer Materials
Journal of Applied Polymer Science | Year: 2013

Nanocomposite of thermoplastic elastomer ethylene-octene copolymer/maleated ethylene-octene (POE/POE-g-MAH) with organo-montmorillonite (OMMT, 11 wt %) as masterbatch have been obtained by melt blending and it has been characterized by transmission electron microscopy (TEM). Flame retardant POE/POE-g-MAH/OMMT/ ammonium polyphosphate-pentaerythritol (APP-PER) (an intumescent flame retardant with 75 wt % ammonium polyphosphate and 25 wt % pentaerythritol) composites were prepared by using melting processing to study their structures, flame-retardancy, thermal, and mechanical properties. TEM showed exfoliated structures throughout POE/POE-g-MAH/OMMT masterbatch and POE/POE-g-MAH/OMMT/APP- PER nanocomposites. Synergistic effect was observed between OMMT and APP-PER resulting in significant improvements on thermal stability, flame-retardancy and mechanical properties in the POE/POE-g-MAH/OMMT/APP-PER nanocomposites. © 2013 Wiley Periodicals, Inc.


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 | Shao H.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Zhang K.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Wu B.,Guizhou Kumkuat Materials Ltd.
Science and Engineering of Composite Materials | Year: 2015

A series of long glass fiber (LGF)-reinforced epoxy resin (ER), thermoplastic polyurethane (TPU) elastomers, and poly(methyl methacrylate) (PMMA) composites were prepared by using self-designed impregnation device. Dynamic mechanical properties of the LGF/ER/TPU/PMMA composites have been investigated by using dynamic mechanical thermal analysis (DMA). The results indicated that the content of PMMA and TPU and scanning frequency had important influence on dynamic mechanical properties and glass transition of the LGF/ER/TPU/PMMA composites. In addition, the Arrhenius relationship has been used to calculate the activation energy of α-transition of the LGF/ER/TPU/PMMA composites. The thermal properties of the LGF/ER/TPU/PMMA composites were studied by thermogravimetric analysis (TGA). Morphology and mechanical properties of the composites are investigated by scanning electron microscopy (SEM), a universal testing machine, and a ZBC-4 Impact Pendulum. © 2015 by De Gruyter.


Zuo X.-L.,Guizhou University | Zuo X.-L.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Zhang D.-H.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Luo X.,Guizhou University | And 6 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2013

The wick effect and combustion characteristic of the flaming process of flame retardant long glass fiber reinforced polyamide 6 (PA6) are reviewed. Various flame retardant agents suitable for long glass fiber reinforced PA6 are highlighted. The comprehensive development trends are prospected based on the current status of flame retardant long glass fiber reinforced PA6 at home and abroad as well.


Zhang J.,Guizhou University | Zhang J.,National Engineering Research Center for Compounding and Modification of Polymer Materials | Zhang L.,Guizhou University | Zhang L.,National Engineering Research Center for Compounding and Modification of Polymer Materials | And 6 more authors.
Hecheng Shuzhi Ji Suliao/China Synthetic Resin and Plastics | Year: 2015

Polyamide (PA) 6 was modified by a self-made compound heat resistant modifier of N-phenylmaleimide-maleic anhydride copolymer (NMA) and nano-organic montmorillonite (nano-OMMT). The effects of different mass ratios on crystallization and melting behavior, thermal properties and mechanical properties of PA 6 were studied. The results show that the layers of nano-OMMT are exfoliated and distributed in PA 6 matrix. The melting temperature, crystallization temperature, crystallinity and melting enthalpy of the PA 6/NMA/nano-OMMT composites increase first and then decrease with the increment of nano-OMMT content. When the mass ratio of NMA to nano-OMMT is 8∶2, the composite has the highest flexural strength, flexural modulus, tensile strength and distortion temperature under load, which are 117.1, 3 301, 80.5 MPa and 82.7℃, and 21.2%, 25.0%, 12.9%, 27.8% higher than those of the composite without nano-OMMT respectively. ©, 2015, Hecheng Shuzhi Ji Suliao/China Synthetic Resin and Plastics. All right reserved.


Guo J.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Guo J.,Guizhou University | Zhang K.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | Zhang D.,National Engineering Research Center for Compounding and Modification of Polymeric Materials | And 5 more authors.
Advanced Materials Research | Year: 2013

The effects of polypropylene grafted with maleic anhydride (PP-g-MA) on the interfacial interaction of PP/GF composites were investigated by means of scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), and mechanical properties. The experimental results demonstrate that PP-g-MA 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/LGF (66.5/3.5/30) composites was observed. 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.

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