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Shihezi, China

Liu C.,South China Normal University | Liu C.,South China University of Technology | Luo Y.F.,South China University of Technology | Jia Z.X.,South China University of Technology | And 4 more authors.
International Journal of Polymeric Materials and Polymeric Biomaterials | Year: 2013

Poly(vinyl chloride) (PVC)/halloysite nanotubes (HNTs) nanocomposites were prepared by melt blending. Transmission electron microscopy (TEM) results showed that HNTs were uniformly dispersed in the PVC matrix. The thermal properties of PVC/HNTs nanocomposites were investigated in detail. The apparent activation energies (Ea) were analyzed by means of Kissinger and Flynn-Wall-Ozawa methods. Thermogravimetric analysis results showed that the thermal properties of PVC/HNTs nanocomposites were improved. Cone calorimetry was used to measure the smoke evolution and fire properties. The addition of HNTs led to a remarkable reduction in the smoke production rate, the total smoke production, and the peak heat release rate. © 2013 Copyright Taylor and Francis Group, LLC.


Liu C.,South China University of Technology | Luo Y.F.,South China University of Technology | Jia Z.X.,South China University of Technology | Zhong B.C.,South China University of Technology | And 3 more authors.
Express Polymer Letters | Year: 2011

Halloysite nanotubes(HNTs) grafted with Polymethyl methacrylate(PMMA) were synthesized via radical polymerization. The properties of PMMA-grafted HNTs were characterized by transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). The results showed that PMMA grafted to the surfaces of HNTs successfully. Then, PVC/PMMA-grafted HNTs nanocomposites were prepared by melt compounding. The morphology, mechanical properties and thermal properties of the nanocomposites were investigated. PMMA-grafted HNTs can effectively improve the toughness, strength and modulus of PVC. The glass transition and thermal decomposition temperatures of PVC phase in PVC/PMMA-grafted HNTs nanocomposites are shifted toward slightly higher temperatures. The grafted HNTs were uniformly dispersed in PVC matrix as revealed by TEM photos. The fracture surfaces of the nanocomposites exhibited plastic deformation feature indicating ductile fracture behaviors. The improvement of toughness of PVC by PMMA-grafted HNTs was attributed to the improved interfacial bonding by grafting and the toughening mechanism was explained according to the cavitation mechanism. © BME-PT.


Wang H.,Xinjiang Tianye Group Co
Hecheng Shuzhi Ji Suliao/China Synthetic Resin and Plastics | Year: 2010

The author studied the variations in melt flow rate, carbonyl index, tensile strength and tensile strain at break before and after adding antioxidant of polyethylene (PE) for drip irrigation tape that was subject to multiple extrusions. The effect of antioxidant on oxidative aging of the PE made of the repeatedly extruded PE was analyzed. The results show that adding antioxidant can lower the reaction rate of thermal oxidation and can significantly improve both micro-chemical and macro-mechanical properties of the PE compared with its counterpart without the antioxidant.


Liu C.,South China University of Technology | Luo Y.,South China University of Technology | Jia Z.,South China University of Technology | Li S.,Xinjiang Tianye Group Co | And 2 more authors.
Journal of Macromolecular Science, Part B: Physics | Year: 2012

Poly(vinyl chloride)(PVC)/halloysite nanotubes (HNTs) nanocomposites were prepared by melt blending. The effects of HNT content on the mechanical properties, morphology, and rheological properties of the nanocomposites were investigated. The results showed that HNTs were effective in toughening and reinforcing PVC nanocomposites. The notched impact, tensile and flexural strength, and flexural modulus of the nanocomposites were remarkably increased compared with those for the pure PVC. Scanning electron microscopy (SEM) results illustrated the ductile behavior of the nanocomposites, with a possible cavitation mechanism. Transmission electron microscopy (TEM) results showed that HNTs were uniformly dispersed in the PVC matrix. Interfacial interaction of hydrogen bonding between the HNTs and PVC matrix was substantiated. The plasticization times of PVC/HNTs nanocomposites were found to be shorter and the equilibrium torque was higher than that for the pure PVC. © 2012 Taylor and Francis Group, LLC.


Trademark
Xinjiang Tianye Group Co. | Date: 2010-02-02

Calcined soda; calcium carbide; citric acid for industrial purposes; hydrochloric acid; vinyl chloride; dispersions of plastics, namely, unprocessed plastics; chlorine; sulphuric acid; chemical salts; fertilizers. Water conduits installations comprised of hydrants, safety valves, pumps, gauges, meters, pipes and couplings; automatic watering installations, namely, irrigation spray nozzles, sprinklers and hoses for garden plant; irrigation fittings, namely, drip irrigation emitters; water filtering apparatus; bath installations; air conditioning installations; regulating accessories for water or gas apparatus and pipes, namely, metered valves; lamps. Tomato sauce; ketchup; condiments, namely, pepper sauce, pickled ginger, curry sauce, pimiento and soya bean paste; ice cream; leaven; essences for foodstuffs, except etheric essences and essential oils; cooking salt; soya sauce; vinegar.

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