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1、1河南工程学院专业英语考查课课程论文论文题目TENSILE MECHANICAL PROPERTIES OF WOOD FIBER/PVCCOMPOSITES学生姓名： 肖金普 学 号： 201110617227 学 院： 机械工程学院 专业班级： 材控 1142 专业课程： 专业英语（机械） 任课教师： 党旭丹 2014 年 11 月 28 日2评 定 项 目 分值 成绩1、选题：科学实用，有新颖性，属于材料科学与工程范畴具体而不空泛。102、论点：论文论点正确，观点鲜明，主题突出。203、论文结构：论文结构合理，层次清晰，逻辑性强。204、论证：独立思考问题并完成论文，能够理论联系实际，论
2、文内容充实，论证严密，引用的数据或资料详实可靠。305、创新：有新意。 106、写作规范：符合学术论文的基本体例，语言通顺，篇幅适当，格式规范。10总成绩：教师： 时间： 3TENSILE MECHANICAL PROPERTIES OF WOOD FIBER/PVCCOMPOSITESABSTRACT To fully exploit the tensile mechanical properties of wood-plastic composites, the effects of the pine powder and rice husk powder content, particl
3、e size and the titanate coupling agent（NDZ-101) content were been examined. The results showed that the tensile modules of elasticity increased from 1535.72MPa to 1670.92MPa, while the tensile strength decreased from 23.09MPa to 21.9MPa with the pine powder content from 30 shares to 60 shares (phr m
4、ethod).The tensile modules of elasticity rise from 1310.68MPa to 1398.23MPa, while the tensile strength decrease from 23.66MPa to 21.81 M Pa with the content of rice husk powder from 30 shares to 60 shares. Whether the pine powder or rice husk powder used as filler, the tensile elongation at break o
5、f the composites dropped slightly less than 1%, meanwhile pine powder size from150 pm to 315 pm did not affect the tensile strength of composites, all about in the vicinity of 24MPa. When the amount of titanate coupler was 1.5 (Phr method), the stretching integrated performance was best. With adding
6、 the same amount of pine powder or rice husk powder, rice husk powder/PVC composites are more plastic, but pine powder/PVC composites are more rigid.KAYWORDS PVC Composites Mechanical Properties Stress Strain1. IntroductionWPC (Wood-Plastic Composites, short for WPC) are used useless wood fiber (i.e
7、. sawdust, bamboo powder, rice husk, crop straw, etc.) as reinforcement or filler, used thermoplastics and their recycling as the basic material, according to a certain percentage of hybrid, and added a special agent, high temperatures, extrusion, molding process to make the new materials. They have
8、 a widely use. WPC both has wood and plastic dual performance, the integrated performance is better 1. PVC-based composites are not only mothproof, anti-bacterial, flame-retardant, good mechanical properties, but also environmental materials, which have some characteristics, rich raw materials in lo
9、w-cost, recyclable, reducing environmental pollution, the protection of forest resources 2. Overseas researchers had researched the wood/plastic composite in-depth3-6; In recent years, Chinese people have also stepped up research in wood fiber/ PE, PP or PVC8-10 .but the emphasis are different. Ther
10、e are a number of factors influenced on the wood-plastic Composites,such as wood fiber types and content, the type and content of coupling agent 11-12, wood fiber size13both of compatibility 14-17,test temperature and humidity and so on. This paper mainly investigated the influence of various wood f
11、iber types, content, size and content of the titanate coupler on tensile mechanical properties.2. Experiments2.1 Experimental materialsVirgin PVC( QS-IOOOF) resin were purchased from Guangzhou Plastic Industrial Corporation Ltd. Pine powder were obtained from Guangzhou wood factory. Rice husk were o
12、btained from College of Agriculture test site rice mill, South China 4Agricultural University. All pine powder and rice husk obtained were milled to pass through four screen, included 40, 60, 80, 100 meshes. Titanate coupler（NDZ-101) were purchased from Guangzhou Yaxin Trade Ltd; Rare Earth Stabiliz
13、er (GS-21 E) were provided by Guangdong Guangyang Hi-tech Co,Ltd. DBP were purchased from the market, Other additives were purchased from the market.2.2 Processing equipments and test instrumentsLSE-35 conical twin-screw extruder: Shunde L&S plastic extruder manufacturing Equipment Co., Ltd.; WD-20k
14、N Precision-Controlled Micro- EIecVonic Universal Testing Machine, Guangzhou Guangcai Material Test Equipment Co.,Ltd; CH-10 Groove Mixer: Laisheng Guangzhou Machinery Equipment Co., Ltd.; 101 一 Air Supply Electric-Oven:Jinping, Shanghai Instrument Manufacturing Co., Ltd; MA 30-OOOV3 rapid infra-red
15、 water tester: Germany Mettler-Toledb Equipment Manufacturing Company;2.3 Sample preparation and process flow chartPrior to blending, all wood fiber were milled, filtrated and dried to 2-3% moisture content at 1000C.Firstly the rice husk powder and pine powder were used calcium carbonate powder coat
16、ed wood flour in order to make a small amount of titanate evenly loading on the filler surface; secondly all the pine powder or rice husk powder were put into mixer; At the same time, spraying mist into the diluted titanate coupler, and then continue to blend 10-30 minutes. thirdly added plasticizers, heat stabilizers, GMS inside lubricant, PVC, and so on, into a typical mixe
