Results 21 to 30 of about 348 (180)

Preparation and catalytic hydrogenation of nano nitrile rubber latexes

Hecheng xiangjiao gongye
Nitrile rubber latex was prepared by conventional emulsion polymerization combined with low-temperature batch polymerization process, the latex was hydrogenated with self-made ruthenium catalyst, and the influence of catalyst amount and hydrogen pressure
LI Wen-xin, ZHANG Bao-jia, ZHOU Jun-yang, SONG Jian-hui, WANG Hui
doaj   +1 more source

Sealing properties and structure optimization of packer rubber under high pressure and high temperature

Petroleum Science, 2019
During hydraulic fracturing operations of low-permeability reservoirs, packers are the key component to ensure the success of multistage fracturing. Packers enable sections of the wellbore to be sealed off and separately fractured by hydraulic pressure ...
Wen-Jian Lan, Han-Xiang Wang, Xin Zhang, Sheng-Shan Chen   +3 more
doaj   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Preparation of in situ modified hydrogenated nitrile rubber with unsaturated carboxylic acid from biomass

Hecheng xiangjiao gongye
Zinc sorbate (ZDS) reinforced hydrogenated nitrile rubber was prepared using sorbic acid and zinc oxide as raw materials by in situ generation method, and the in situ reaction mechanism of sorbic acid and effect of zinc sorbate on physical and mechanical
XUE Ao-nan, LIU Da-chen, ZHU Bo-cong, XIAO Xiao-kun
doaj   +1 more source

Comparative study on the sealing performance of packer rubber based on elastic and hyperelastic analyses using various constitutive models

Materials Research Express, 2022
Evaluation of the sealing performance of the packer rubber varies according to specific simulation models. This paper aims at revealing the difference between elastic and hyperelastic analyses using the finite element mothed (FEM). The study extracts the
Xuelin Dong, Zhiyin Duan
doaj   +1 more source

Can Elastomers Combine Stiffness, Toughness and Fatigue Resistance?

Advanced Materials, EarlyView.
This review studies how the molecular and macroscopic architecture of elastomers influence their mechanical properties including: stiffness, stretchability, toughness, fatigue resistance, and damping behavior. By linking the structure to performance, it proposes design principles for advanced elastomeric systems that combine mechanical properties ...
Eva Baur, Esther Amstad
wiley   +1 more source

"Determination of bound acrylonitrile content in nitrile rubber by Kjeldahl method optimized by titanium dioxide mixed catalyst"

Hecheng xiangjiao gongye
Titanium dioxide mixed catalyst was used to optimize the determination of bound acrylonitrile content in nitrile rubber by Kjeldahl method. The effects of sample mass, distillate vo?鄄lume and catalyst type on the determination results were systematically
LIU Suibo, CHEN Genping, LIU Bei, CAO Yanqiang, SONG Jierui, WANG Zhen
doaj   +1 more source

Flanking‐Group Engineering Unlocks Emerging Functionalities in Diketopyrrolopyrrole Semiconductors

Advanced Science, EarlyView.
This review presents a comprehensive and unified perspective of flanking‐group engineering in Diketopyrrolopyrrole (DPP) based organic semiconductors that connects molecular‐level design with cross‐device functionalities. By integrating insights from molecular design, solid‐state packing, and device physics, this review seeks to establish general ...
Xiaoyun Wu, Shanshan Zhou, Meng Li, Aung Ko Ko Kyaw, Xiao‐Lei Shi, Qian Liu   +5 more
wiley   +1 more source

Analyzing the Cross-Linking of HNBR Utilizing Peroxide and Triazine Compounds

Фізика і хімія твердого тіла
Investigated the role of polymer peroxide (1,4-bis-tret butyl peroxy isopropyl benzene) and triazine compounds (6-bis-trichloromethyl sym-triazine, 2-phenyl-4) under heating in hydrogenated butadiene nitrile rubber (HNBR) systems.
A.Kh. Mammadov, R.F. Khankishiyeva, H.N. Akhundzada, A.Kh. Salehov   +3 more
doaj   +1 more source

Robust Stitching Interface and Deep Learning Empowered Hydrogel Human‐Machine Interface

Advanced Science, EarlyView.
A molecular design strategy is presented that exploits synergistic carboxylate anion–quaternary ammonium interactions to simultaneously strengthen the hydrogel–PET interface and the bulk hydrogel network. Integrated with deep learning signal processing, the stable hydrogel–PET interface enables consistent signal acquisition and reliable human‐machine ...
Hao Dong, Yiming Luo, Chuanliu Liu, Mahamood Modupe Rasheedat, Wenjiayi Tan, Fangyu Zhao, Yixue Zhang, Chris Connor, Hua Hou, Hamdy Khamees Thabet, Ben Bin Xu, Huige Wei   +11 more
wiley   +1 more source