Thermal stability and heat resistance of chromized carbon steel

1970 ◽  
Vol 12 (6) ◽  
pp. 515-516
Author(s):  
M. A. Krishtal ◽  
E. P. Ponomarenko ◽  
Yu. K. Belov ◽  
A. P. Mokrov
Keyword(s):  
Thermal Stability ◽  
Carbon Steel ◽  
Heat Resistance

Effects of Micro-Eggshells Filler on Tracking and Erosion Resistance of Silicone Rubber Composites

2020 ◽  
Vol 846 ◽  
pp. 37-41
Author(s):  
Pattarabordee Khaigunha ◽  
Tanakorn Wongwuttanasatian ◽  
Amnart Suksri
Keyword(s):  
Thermal Stability ◽  
Heat Resistance ◽  
Silicone Rubber ◽  
Erosion Resistance ◽  
Rubber Composites ◽  
Surface Tracking ◽  
Rubber Composite ◽  
The Matrix ◽  
Thermal Stability Of ◽  
Inclined Plane Test

This study investigates the effects of micron-sized eggshells filler on resistance to tracking and erosion of silicone rubber composite. Eggshells with particle size from 44 to 53 microns were filled into liquid room temperature vulcanizing (RTV) silicone rubber with 0, 5, 15, 25, and 30 part per hundred of rubber (phr). IEC-60587 inclined plane test (IPT) was employed to appraise the surface tracking resistance. Thermogravimetric analysis was conducted to evaluate its thermal stability. Experimental results revealed an improvement of tracking and erosion resistance due to an addition of eggshells particles. Furthermore, the thermal stability of the composites showed variation in the increasing amount of the filler. The filler indicated that higher thermal stability of eggshells influences the heat resistance of the matrix. An increase of the heat resistance resulted in the ability to slow down tracking growth and erosion in the discharge region.

Indole-based high-performance polymeric materials with enhanced mechanical and thermal properties via cation-π interaction

2019 ◽  
Vol 32 (6) ◽  
pp. 662-668
Author(s):  
Xiao-fang Guan ◽  
Cong Liao ◽  
Li Yang ◽  
Guan-jun Chang
Keyword(s):  
Thermal Stability ◽  
Heat Resistance ◽  
Self Assembly ◽  
High Performance ◽  
Mechanical Performance ◽  
Polymeric Materials ◽  
Design Strategy ◽  
Mechanical And Thermal Properties ◽  
Innovative Design ◽  
High Performance Polymers

The preparation of high-performance polymeric materials with both excellent overall mechanical properties and heat resistance remains a considerable challenge. Inspired by the delicate self-assembly processes in nature, a facile strategy is reported for the preparation of high-performance polymeric materials with enhanced mechanical strength and improved thermal stability. In this instance, we successfully constructed a cation- π cross-linked polyimide (Na-poly(aryl indole) imide (Na-PINI)) film with enhanced mechanical performance and heat resistance (∼490°C). This work presents an innovative design strategy for realizing robust polymeric materials with integrated strength and thermal stability; the cation- π interaction is demonstrated to be a new method that may achieve many useful properties for high-performance polymers.

Study on Acrylic Emulsion Adhesive Modified by Double Siloxane

2013 ◽  
Vol 395-396 ◽  
pp. 367-370
Author(s):  
Cai Hua Gao ◽  
Wen Lu Guo ◽  
Zhi Ming Jin
Keyword(s):  
Thermal Stability ◽  
Comparative Study ◽  
Heat Resistance ◽  
Chemical Process ◽  
Water Resistance ◽  
Orthogonal Experiment ◽  
Acrylic Emulsion ◽  
Macroscopic Properties ◽  
The Stability ◽  
Thermal Stability Of

The acrylic emulsion adhesive was modified by D4 and KH570 with chemical process, and we can get the modified product successfully via the best technology parameter which was confirmed by orthogonal experiment. The structure of acrylic was characterized by FTIR, while there was a comparative study on the macroscopic properties and thermal stability of the unmodified and modified product. The results showed that when m(D4):m(KH570) was 2:1, the dosage of emulsifier was 3.0%, the dosage of KPS was 4.0%, the monomer(soft and hard) ratio was 1:1, the stability of the acrylic emulsion adhesive modified by double siloxane was good, and its viscosity, water resistance, heat resistance were improved greatly.

Investigations on the Machinability of Titanium Alloy TC25

2014 ◽  
Vol 800-801 ◽  
pp. 92-96
Author(s):  
Hong Shan Zhang ◽  
Xing Ai ◽  
Zhan Qiang Liu ◽  
Ji Gang Liu ◽  
Zhao Lin Zhong
Keyword(s):  
Thermal Stability ◽  
Surface Roughness ◽  
Titanium Alloy ◽  
Service Life ◽  
Heat Resistance ◽  
Cutting Forces ◽  
Cutting Parameters ◽  
Aircraft Industry ◽  
Excellent Thermal Stability ◽  
Cemented Carbide Tools

Titanium alloy TC25 has been widely used in aircraft industry due to its excellent thermal stability, heat resistance and longer service life. In this paper, cemented carbide tools were applied to carry out orthogonal milling experiments for both titanium alloy TC25 and TC4 with identical cutting conditions. Cutting forces, cutting temperatures and surface roughness were measured to assess the machinability for TC25 and TC4. From the experimental results, the cutting parameters can be optimized to guide efficient machining processing of TC25.

Engineering interface structures between lead halide perovskite and copper phthalocyanine for efficient and stable perovskite solar cells

2017 ◽  
Vol 10 (10) ◽  
pp. 2109-2116 ◽  
Author(s):  
Y. C. Kim ◽  
T.-Y. Yang ◽  
N. J. Jeon ◽  
J. Im ◽  
S. Jang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Heat Resistance ◽  
Copper Phthalocyanine ◽  
Perovskite Solar Cells ◽  
Halide Perovskite ◽  
Interface Structures ◽  
Lead Halide

CuPC-applied perovskite solar cells show excellent long-term thermal stability which is attributed to the reliable interface and intrinsic heat-resistance of CuPC.

scholarly journals CURING OF DIGLYCIDAL ESTERS OF BISPHENOLS WITH ACID HARDENERS

World Science ◽  
2021 ◽  
Author(s):  
Givi Papava ◽  
Nora Dokhturishvili ◽  
Nazi Gelashvili ◽  
Ia Chtrekashvili ◽  
Ketevan Papava ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Heat Resistance ◽  
Chemical Structure ◽  
Modern Technology ◽  
Temperature Range ◽  
Epoxy Polymers

The unique properties of epoxy polymers have led to their wide application in various fields of modern technology. The influence of the structure of bisphenols on the properties of epoxy polymers, especially thermal ones, is known. However, the chemical structure of the hardener also affects the properties of cured epoxy polymers. As hardeners, we used acid hardeners of various structures: anhydrides of maleic, phthalic, pyromellite, methyltetrahydrophthalic and other acids. The following hardeners give high results in heat resistance: pyromellite and methyltetrahydrophthalic anhydrides. Polymers obtained by curing with these hardeners are deformed in the temperature range of 220-245°C. The use of these hardeners gives high results in terms of thermal stability. These polymers are formed by curing these components. It is known that the properties of epoxy polymers depend on the chemical structure of the glycide ether. There was some interest in investigating the influence on the properties of epoxy polymers as a chemical structure, as well as the nature of hardeners. For this purpose, diglycidal esters based on bisphenols were synthesized.

Tribological Performance Comparison and Analysis on Friction Material: Four Modified Phenolic (PF) Resins

2016 ◽  
Vol 693 ◽  
pp. 653-661 ◽  
Author(s):  
Da Bin Zhang ◽  
Can Li Li ◽  
Yang Cao ◽  
Ze Lu ◽  
Qi Xiang Cui
Keyword(s):  
Thermal Stability ◽  
Wear Rate ◽  
Heat Resistance ◽  
Testing Machine ◽  
Friction Material ◽  
Performance Comparison ◽  
Surface Appearance ◽  
Tung Oil ◽  
Frictional Properties ◽  
Blending Method

This paper makes PF weaving friction material (p0.0) from tung oil, PF weaving friction material (BP) from boric acid, modified PF weaving friction material (SP) of nanopalygorskite by in-situ method, and modified PF weaving friction material (MP) of nanopalygorskite by blending method. The contrast tests of frictional properties are carried out on DMS-1 friction-abrasion tester. Hot recession test is performed on CHASE-M600 testing machine, and surface appearance analysis of friction sample is made on electronic probe. The result shows that after modification, the heat resistance and thermal stability of PF are all improved to different extent. SP friction material has best thermal stability and strongest braking ability under high temperature; while BP takes second place, and P0.0 is the worst. The heat resistance of BP, SP and MP is stronger than P0.0. The critical temperature of hot recession for weaving friction material on the base of nanopalygorskite/tung oil PF raises by 40~50°C. On the aspect of frictional properties, friction coefficients of SP, BP, and MP show quite stable. Among these samples, SP has the most stable friction coefficient, and P0.0 the worst. The wear rate of SP, BP and MP has the same trend with the temperature changes. However, the wear rate of P0.0 is getting intense with temperature rise. Its wear rate is much higher than SP, BP, and MP’s under same temperature.

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