نتایج جستجو برای: protective materials

تعداد نتایج: 545555  

Journal: :RUDN Journal of Engineering Researches 2020

2014
Nermin M. Aly M. M. Saad

Protective clothing performs a vital role in maintaining the safety of human in workplace. The developments in this field are proceeding to fulfill the needs with multifunctional materials at competitive costs. Recently, the protective clothing field introduces the usage of composite materials taking advantage of their outstanding properties. In this paper, the multifunctional performance of hy...

Journal: :International journal of occupational safety and ergonomics : JOSE 2008
Lotfi Harrabi Patricia I Dolez Toan Vu-Khanh Jaime Lara

Two mechanical methods have been developed for the characterization of the flexibility of protective gloves, a key factor affecting their degree of usefulness for workers. The principle of the first method is similar to the ASTM D 4032 standard relative to fabric stiffness and simulates the deformations encountered by gloves that are not tight fitted to the hand. The second method characterizes...

Journal: :International journal of occupational safety and ergonomics : JOSE 2009
Patricia I Dolez Toan Vu-Khanh

The field of personal protective equipment (PPE) has led to several high technology innovations. Indeed, improved protection against the various possible encountered risks is looked for, in particular at the workplace. This has generated the development of new materials and new manufacturing technologies, as well as the introduction of new applications for existing ones. However, the remaining ...

Journal: :Ergonomics 2017
Khairil Anas Md Rezali Michael J Griffin

For three samples of material (12.5, 25.0 and 37.5 mm diameter) from each of three gloves, the dynamic stiffnesses and the vibration transmissibilities of the materials (to both the palm of the hand and the thenar eminence) were measured at frequencies from 10 to 300 Hz. Additional measurements showed the apparent masses of the hand at the palm and the thenar eminence were independent of contac...

Journal: :IOP Conference Series: Materials Science and Engineering 2018

Journal: :International journal of occupational safety and ergonomics : JOSE 2013
Agnieszka Brochocka Krzysztof Makowski Katarzyna Majchrzycka Piotr Grzybowski

The basic aim of this research was to establish the efficiency of filtering materials widely used in respiratory protection devices with particular interest in their porosity, degree of electric and changeable process parameters, such as the flow rate of the test nanoaerosol and the size range of nanoparticles. Tests were carried out with an NaCl solid aerosol of 3.2 × 105 particles/cm3 for the...

Journal: :Journal of physics 2023

Abstract Silicone rubber (SR) materials play a crucial role in the field of mechanical impact protection technology. However, adhesive stability between SR and various substrates actual application process is still challenging task. The surface free energy about 19.9 mJ/m 2 , which can directly lead to fall off peel during process. In present study, new type bifunctional polyborosiloxane interf...

Journal: :Journal of occupational and environmental hygiene 2011
Catherine O'Brien Laurie A Blanchard Bruce S Cadarette Thomas L Endrusick Xiaojiang Xu Larry G Berglund Michael N Sawka Reed W Hoyt

Personal protective equipment (PPE) refers to clothing and equipment designed to protect individuals from chemical, biological, radiological, nuclear, and explosive hazards. The materials used to provide this protection may exacerbate thermal strain by limiting heat and water vapor transfer. Any new PPE must therefore be evaluated to ensure that it poses no greater thermal strain than the curre...

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