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In order to provide deeper insight in this question we attempt to correlate the amounts of water formed upon friction of PU nanocomposites by using sensitive mass-spectrometric method and relate it to wear of the materials.
The flake-like wear debris typical for all PU-based materials formed after friction in vacuum is seen in the figure.
Savkin, Friction and wear in polymer based materials, Pergamon Press, 1982, p. 409 [3] A.P.
Journal of Macromolecular Science, Part B: Physics, 2013, 52(12), 1681-1696
Kestelman, Electrophysical Phenomena in the Tribology of Polymers, Gordon and Breach Science Publishers, p. 1999 [8] D.K.

Firdiyono2,b, Akhmad Herman Yuwono3,b, Sri Harjanto4,d, Bambang Suharno5,e 1,2Research Centre for Metallurgy, Indonesian Institute of Sciences (LIPI), Kawasan Puspiptek Serpong, Tangerang Selatan 15314, Indonesia 1,3,4,5Department of Metallurgy and Materials, Faculty of Engineering, University of Indonesia, Jawa Barat 16424, Indonesia aifa_sari@yahoo.com,alati003@lipi.go.id, bflor001@lipi.go.id, cahyuwono@metal.ui.ac.id, dharjanto@metal.ui.ac.id , esuharno@metal.ui.ac.id Keywords: ilmenite, titanium dioxide, decomposition, sodium hydroxide, hydrothermal ABSTRACT Ilmenite is an economically important and interesting mineral.
This mineral has can be used as the source of making titanium metal, titanium dioxide (TiO2) pigment and material for photo catalysts.
The utilization of Indonesia ilmenite to produce economically valuable material remains an interesting research topic due to abundant ilmenite reserves of more than 40 million tonnes[1].
Material The starting ilmenite used in this research is a natural ilmenite or iron titanate (FeTiO3) as by- product of tin production in Bangka Indonesia.
[6] Xiaoyan Zhang, Yujun Sun, Xiaoli Cui, Zhiyu Jiang : A green and facile synthesis of TiO2/graphene nan˚Composites and their phot˚Catalytic activity for hydrogen evolution, International Journal of Hydrogen Energy xxx (2011), p. 1-5

Decomposition Kinetics and Cook-off Numerical Simulation of Insensitive Energetic Plasticizer Plasticized Propellants Ya-Lun WANG1,a, Yu CHEN1,b* and Yun-Fei LIU1,c 1School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, People's Republic of China apoipsi@sina.com, bcylsy@163.com, cssclyf@bit.edu.cn *Corresponding author Keywords: Insensitive NEPE propellant, BuNENA plasticizer, Thermal decomposition kinetics, Cook-off numerical simulation.
Energetic materials such as propellants undergo a gradually thermal decomposition reaction when heated.
ρCp∂T∂t = λ(∂2T∂r2 + 1r∂T∂r + 1r2∂2T∂φ2 + ∂2T∂x2) + Qρe-Ea/Rt (3) Tab. 1 Thermal constant and decomposition heat of different materials Materials ρ [kg m–3] λ [W m-1 k-1] Cp [J kg-1 k-1] Q [J kg-1] Q#1 [J kg-1] BuNENA Propellant 1778 0.4293 1071 6500 640.0 NG/BTTN Propellant 1782 0.4465 1130 7200 1150 45# steel 8030 16.27 502.5 None None Air 1.225 0.0242 1006 None None Fig. 1 Constructed geometric model and meshing of cook-off numerical simulation.
Zhang, Chinese Journal of Energetic Materials 28 (2020) 1036-1042
Li, Chinese Journal of Energetic Materials 27 (2019) 735-742.

Materials Chemistry and Physics, 2001. 67(1): p. 72-77
Materials Chemistry and Physics, 2013. 138(1): p. 405-415
Materials Science and Engineering: A, 2012. 538: p. 135-144
Materials & Design, 2009. 30(9): p. 3444-3449
Journal of Materials Processing Technology, 2005. 168(3): p. 505-510

Experimental Program Materials and Mix Design, Sample Preparation.
Materials & Design (1980-2015), 36, 191-198
Mechanical and microstructural characterization of alkali-activated materials based on fly ash and slag.
In IOP Conference Series: Materials Science and Engineering (Vol. 230, No. 1, p. 012046).
Construction and Building Materials, 125, 809-820

The SEM analysis shows the wear tracks results of the composite materials.
Based on the literature review to select the materials.
Results and Discussion Analysis of Microstructure : Figure 1 shows that microstructure image of composite materials.
Velasco, “P/M aluminum matrix composites: an overview”, Journal of Materials Processing Technology, vol. 133, issues 1-2, 2003, pp. 203- 206
In: Proceedings of materials solutions’97 on wear of engineering materials, 15–18 September, Indianapolis, Indiana; 1997. p. 205–11.

Agronomy Journal, https://doi.org/10.2134/agronj14.0064
Research Journal of Chemistry and Environment
E-Journal of Chemistry, https://doi.org/10.1155/2010/782134
International Journal of Environmental Sciences
Indian Journal of Environmental Protection

[3] Liao, F.S., Su, A.c. and Hsu, T – C.J Vibration Damping of Interleaved Carbon Fiber-Epoxy Composite Beams, Journal of Composite Materials, 28 (1994) 1840-1854
[4] Gintautas, Damping Properties of Concrete with Rubber Waste Additives, Materials science 15 (2009) 266-272
Materials Science and Engineering, 458(1-2). pp. 330-335, 2007
[11] ASTM D638, Standard test method for tensile properties of polymer matrix composite materials, Annual book of ASTM standards
[12] ASTM D790-03, Standard test method for flexural properties of unreinforced and electrical Insulating Materials, Annual book of ASTM standards

Under thermal mechanical and loading, the materials expand in the interface.
Materials data are given in Table 2.
Journal of Power Sources, 2009, 194(2):581-587
IEEE Transactions on Device & Materials Reliability, 2014, 14(1):194-202
IEEE Transactions on Device & Materials Reliability, 2012, 12(1):124-132.

To date, ultrahigh strength DSP cementitious materials have attracted increased attention.
Experimental Materials.
All materials were calculated by weight.
The other materials of the matrix used are the same with previous tests in 3.2.3.
Bache : Aalborg Portland, Aalborg, 1981, CBL Report No. 41 [2] Ping Lu: GuideTheory of Cement Material Science( Tongji University Press, China 1991) [3] Jinzhen Yang: Housing Materials & Applications Vol.90,No.2(1999): p.25 (in Chinese) [4] Aijun He: Feasibility Study of Prepare DSP Cement by Use of Ultrafine Fly Ash instead of Silica Fume(Ph.