Results 21 to 30 of about 585 (182)
Manufacturing of speed reducer bars (break discs and bumzes) for vehicles and tractors using local raw materials [PDF]
مجلة التربية والعلم, 2005 Phenol-formaldehyde , Asbestos and Rubber blend was prepared and used as speed reducer bars ( brake-discs and bunzes) alternative to the imported one. we also succeed to prepare an asbestos and novolac blend and used as car brake bunzes.
Mohammed Al Ajili, Jamal Abbas
doaj +1 more source
Applied Sciences, 2022 For the design of stretchable and flexible high-performing materials, the reinforcement of elastomeric grades plays a crucial role. State-of-the-art fillers such as carbon black benefit from a high reinforcement but often negatively affect the processing
Lara Strohmeier +4 more
doaj +1 more source
Polímeros, 1999 Este trabalho descreve uma utilização mais nobre para a lignina obtida de processos industriais de polpação. Foram preparadas resinas fenólicas tipo novolaca, utilizando-se lignossulfonato de amônio e lignossulfonato de sódio (com diferentes teores de ...
Fernando dos Santos +1 more
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Eurasian Chemico-Technological Journal, 2020 Composites consisting of propargyl- and allyl/propargyl- modified novolac resins and carbon fabric were obtained by the vacuum infusion molding process. It was established that the presence of potassium cations remaining after the synthesis increase the ...
S. Nechausov +6 more
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Absorption properties of novolac-alumina-graphite mixture microwave absorbers in x-band frequencies
Iraqi Journal of Physics, 2021 Absorption properties (Attenuation coefficient, the percentage of the reflection, and the percentage of absorption) in x-band have been investigated in this paper for novolac – alumina- graphite mixture.
Qayes A. Abbas
doaj
Improvement in Ablation and Thermal Properties of Ultra-lightweight Silicone/Cork Composites Insulator Using Novolac Aerogel [PDF]
علوم و تکنولوژی پلیمر, 2018 Hypothesis: Thermal insulating materials are essential in optimization of energy consumption and to reduce heat and energy loss. Lightweight thermal insulator materials can reduce weight/density and improve the performance of final product.
Majid Haghir Madadi +2 more
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Thermosetting resin compositions based on novolac and modified novolac
Advances in Polymer Technology, 2011 AbstractNovel formaldehyde novolac resins at various molar ratios of monomers (4,4′‐methylenedianiline/p‐nonylphenol/p‐formaldehyde) were synthesized in the presence of an acid catalyst. The obtained resins were characterized by using elemental analysis, FT IR, and 1H NMR spectroscopic methods.
openaire +1 more source
Detection for Bacillus spp In Milk Powder Infant Formula
Tikrit Journal for Agricultural Sciences, 2021 This study was included isolation and identification Bacillus spp bacteria from childrens milk powder under 2 years of age .45 milk sample were collected with 3 replicates per label. Dialak , Novolac AD, Similac 1, Nactalia 1, Celia2, Sunny baby1, Nursoy,
Mohammed Mosa Jafaar +1 more
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Using High-Density Polyethylene and Novolac Polymers to Improve the Properties of Gypseous Soil
مجلة النهرين للعلوم الهندسيةThis study explores the impact of adding high-density polyethylene (HDPE) and Novolac polymers to gypseous soil from Tikrit City, Iraq, to enhance its geotechnical properties.
Maher M. Khazaal +1 more
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Recent advances in polymeric chemically amplified positive resists: Materials and design strategies
Smart Molecules, EarlyView.This review summarizes recent advances in the molecular design of positive chemically amplified resists, focusing on photoacid generators and polymer architectures. Key strategies for enhancing sensitivity—including self‐amplification effects, copolymerization of sensitive monomers, controlled polymerization, and photosensitized chemically amplified ...
Litao Zhou +3 more
wiley +1 more source