Adhesion of NR Faceblank and CPU Flexible Lens for Respirators |
Received:February 08, 2018 Revised:February 08, 2018 |
DOI: |
Key Words: Respirators; faceblank; flexible lens; polyurethane adhesives; adhesion |
Author Name | Affiliation | E-mail | WANG De-yin | State Key Laboratory of NBC Protection for Civilian,Research Institute of Chemical Defense | xpz2004@sohu.com | LI Xiao-yin | 国民核生化灾害防护重点实验室 | | HUANGFU Xi-le* | 国民核生化灾害防护重点实验室 | 13581826542@139.com | RONG De-gong | 山西新华化工有限责任公司 | | WANG Gang | 山西新华化工有限责任公司 | |
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Abstract: |
In this paper, the connection between natural rubber (NR) faceblank and casting polyurethane elastomer (CPU) flexible lens for respirators employing adhesive technology instead of traditional clamp connection. Surface compositions and morphologies of the pristine and chemical treated NR faceblank are analyzed by X-ray photoelectron spectroscopy (XPS), attenuated total reflection fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), and the bonding properties for the joints of NR faceblank/CPU flexible lens are investigated. Results show that surface treatment of NR faceblank by trichloroisocyanuric acid/ethyl acetate (TCI/EAC) not only introduces a large amount of Cl and O elements through chlorination and epoxidation but also changes the surface morphology greatly. Acceptable bonding properties can be achieved by using polyurethane adhesive, and T-peel strength of lap joints and pull out force of scarf joints are ca.3.7KN/m and 560N. Surface chemical treatment is an effective way to improve the adhesion properties. |
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