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Introduction A renewable natural organic fibers act as reinforcing materials which are biodegradable and ecofriendly for the use of glass or carbon fiber and inorganic fillers.
Materials The recycled high density polyethylene (rHDPE) with a melt flow index of 0.7 g/min at 160 °C and a density of 939.9 kg/m3 were supplied by Mega Makmur Sdn.
Acknowledgements Author is grateful to the School of Materials, Universiti Malaysia Perlis for the provision of laboratory facilities and technical assistance.
“Influence of nanoclay on properties of HDPE/wood composites” Journal of Application Polymer Science, 103, 3056
G. (2010) “Nanoclay-reinforced, polypropylene-based wood–plastic Composites,” Journal of Polymer Engineering and Science, 3.

Materials Characterization, 89(2014),43-55
Journal of Materials Processing Technology,214(2014),3112- 3121
Journal of Materials Engineering and performance, 26(11)(2017),5519-5529
Materials and Design,106(2016),177-183
Journal of the Minerals Metal & Materials Society(JOM), 71(2)(2019),703-708

However, the extraction of these natural fibers are difficult due to the hardness of these materials.
Materials and Methods Cellulose-based fiber preparation.
The treatment were done in order to remove hemicellulose, lignin and other soluble materials.
Sain, in: BioResources Vol. 6(4), (2011), p. 3775-3790 [7] L.P Cru-Lopes, in: International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, Vol. 10(8), (2016) [8] M.
Asim, et.al, submitted to: International Journal of Polymer Science (2015)

In addition, the lack of effective way of safety training and safety training materials also increased the difficulty to safety training.Most of the construction unit safety management system is not perfect.
In the long run, the use of below standard configuration will bring problems for performance degradation, and low-quality materials used.
Journal of building materials and decoration (in Chinese),7,319 -321
Journal of management(in Chinese),15,331
Journal of construction safety (in Chinese), 11,34 -37

Experiment Materials.
In order to consideration of these materials’ strain rate dependence, Cowper-Symonds dynamic constitutive equation shown in Eq.(1) was adopted
(1) Here, is dynamic yielding stress, is static yielding stress, is strain rate and are materials’ constants, respectively.
Table 5 Strain rate papameters Materials C P Brass 3.2-E+5 4.9 PC 25 2.7 PMMA 11 6 Analytical results The collision analysis results are shown in Fig.9.
This deformation mode stems largely from the strain rate dependence of the bullet and target materials.

Based on the traditional basement, it combines materials science, contrology, environmentology, energy science.
We extract material and energy from the nature, and manufacture the engineering materials after machining.
This process will waste lots of materials and also break the environment.
It can use the materials effectively and reduce the pollution.
The current green manufacturing techniques include: Resource saving technique.Manufacturing engineering cost raw materials the most.

A Study on Mathematical Model of Deformation Force for Tube Nosing with Conical Die Liang CHU1,2,a,Qingwei WANG 4,Yan BI1,Dasen BI1,3,b 1School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China 2Key Laboratory of Display Materials & Photoelectric Devices (Tianjin University of Technology), Ministry of Education, Tianjin 300384, China 3Tianjin Key Lab for Photoelectric Materials & Devices, Tianjin 300384, China 4460mm pipe plant of Tianjin Pipe (Group) Corporation, Tianjin 300301, China achuliangszhm@163.com（correspondence author）,btjbds@sina.com（correspondence author） Key words：tube nosing deformation force, slab method, work-hardening, mathematical model Abstract.
2） At conical die semi-angle ＞25° a）Eqn.（21）is the mathematical model of deformation force calculated for tube nosing with a conical die applied to the non-hardening materials or in hot working; b）Eqn.（22）is the mathematical model of deformation force calculated for tube nosing with a conical die applied to the linear strain-hardening materials; c）Eqn.（23）is the mathematical model of deformation force calculated for tube nosing with a conical die applied to the most power-exponent strain-hardening materials.
References [1] Lu xian-feng, Chu liang: Journal of plasticity engineering Vol.11,No.6（2004）, p.43-46 [2] Wang xiao-pei: Handbook of pressing（2nd edition）.
（Jiangxi Science & Technology Press,China 2003） [5] Yu han-qing, Chen jin-de: The principle of metal plastic forming.
（Machine Industry Press, China 1982） [10] Lu xian-feng: Journal of Nanchang University（Engineering & Technology）Vol.25,No.1（2003）, p.90-100

Wear mechanism of the coatings is oxidation wear and a large amount of counterpart material is transferred to the coatings.
Therefore, material removed by oxidation wear is less and vice versa.
Acknowledgement This work was financially supported by the National Natural Science Foundation of China (Grant No. 51365024) , the National Natural Science Foundation of China (Grant No. 51361020).
References [1] Zhenyu Zhang, Zhiping Wang, Bunv Liang, Journal of Rare Earths, 23(2005) 73 [2] Xinhong Wanga, Min Zhang, Zengda Zou, Shiyao Qu, Surface ＆coatings technology, 161(2002):195-199 [3] A.
Journal of Materials Processing Technology, 2009, 209: 1368-1374

Figure.3-1 Distribution of sizes in Shiwu Fault Depression reservoir Figure.3-2 The relation of hydrocarbon and distribution of grain size Size pattern of clastic rock Fig.4 is the content diversification of Shiwu Fault Depression reservoir interstitial materials.The reservoir interstitial materials are mainly matrix and cement.
Carbonate and shaly are as interstitial materials in Shiwu Fault Depression reservoir clastic rocks,secondly kaolinite. 4.
Sandstone ingredient are low compositional maturity, poor psephicity,good sorting and high percent of cuttings.As a result,depositional environment energy is strong,handling distance is short,far away from parent rock areas.These provide rich materials for secondary pore, conduciving to secondary pore.
References [1] Guomin Fu,Xin Li,Zhilu Liang.Diagenesis and chang 6 formation sandstone and its effect on reservoir property in sanya regions in ordos basin[J].Journal of Xi’an University of Science and Technology,2007,27(3):377～380
[2] Zhenlin Chen,Guoshou Wang,Jun Wang.Diagenesis and Porosity Evolution of Lower Cretaceous Denglouku Formation in southern Songliao Basin [J].Journal of Jianghan Petroleum Institute,1996,18(1):14～17

Materials and Methods Materials.
Journal of Cleaner Production 57 (2013) 2-18
Materials and Design 36 (2012) 829-839
Superhydrophobic Coatings on Cellulose-Based Materials: Fabrication, Properties, and Applications.
Use of Chitosan in Surface Modification of Textile Materials.