Средства индивидуальной защиты Hoffmann Group 2026 - страница 173

GBP 57 MATERIALS SCIENCE Acrylic Neoprene In acrylic in connection with textiles is polyacrylonitrile (PAN). See chloroprene. As a pure substance, the polymer is very hard, stiff and resistant to chemicals and solvents. In addition, it has a melting point above the decomposition temperature. Nitrile Nitrile polymers are chemically very resistant and have rubber-like Aramides characteristics. Non-allergenic and therefore a good alternative to latex gloves. Aramides are polyamides with specific chemical (aromatic) characteristics. Very good protection characteristics for contact with oil, grease, and petrol. They have very high tensile strength (breaking length is five times as high as for steel) Danger of slipping for contact with water. and are used in bullet resistant vests or helmets, for example. Nylon Cotton A trade name for polyamide 6.6. Developed and patented by DuPont in 1935. Cotton is a natural fibre. Cotton is generally regarded as kind to the skin, Originally used for toothbrushes and stockings, the first entirely absorbent, heat resistant, long-lasting, hard-wearing and stretchable. synthetic fibre is now used in many areas. Uncoated cotton gloves are used for dry, light work, and as liner gloves. PE-HD Butyl High Density Polyethylene (HDPE). Isobutene-isoprene rubber, or butyl rubber, is a polymer in the group Weakly branched polymer chain, hence the high density. of synthetic rubbers. Materials vulcanised with rubber have a very low gas permeability and are highly resistant to oxygen. Therefore this Polyamide material is ideally suited as protection against many chemicals. Originally developed as a synthetic substitute for silk, polyamide is used today in many areas. Polyamide is highly elastic, wear-resistant, durable and relatively resistant to chemicals. Chloroprene For multi-purpose gloves, the leading backing material, which Chloroprene is almost always polymerised to chloroprene rubber, also known under can be combined with different coating materials. the brand name neoprene. It is increasingly used in the automotive industry and for insulating sportswear. Neoprene gloves have good properties regarding oil and Polyester grease resistance, heat resistance, acid resistance, resistance to alkalis and solvents. Describes a large family of synthetic polymers (plastics). Polyester fibres (PES) are used for textiles, non-woven fabrics and Dyneema® microfibres. Trade names include Fleece and Thermolite. Trademark of Royal DSM N.V. Belongs to the family of HPPE fibres, which have up to 15 times greater tensile strength than steel at the same load and are about Polyurethane (PU) 40% stronger than aramide. Dyneema® is used for instance as the backing material Depending on the production, hard and brittle or soft and flexible. Elastic PU has of cut-resistant gloves. a relatively high tear resistance. Foamed and non-foamed PU is used in many areas (mattresses, shoe soles, sealants, adhesives). Elastane Many gloves benefit from the properties of a PU or PU-foamcoating: This is a very stretchy synthetic fibre that is similar to rubber, but has Good sense of touch, high abrasion resistance, oil resistance. substantially higher strength and durability. Keeps its shape, light and soft. Also known under the trade name Lycra. Polyvinyl alcohol (PVA) Thermoplastic with high tensile strength and flexibility. Glass fibre Melting point is 230 °C. Good resistance to solvents. Long thin glass fibres. Glass fibres can be used in many different areas, such as fibre optic cable for data transmission & illumination, Poly vinyl chloride (PVC) or due to their special mechanical properties also as reinforcement fibre for Thermoplastic polymer. After polyethylene (PE) and polypropylene (PP), PVC is the composite materials or cut-resistant gloves. third most important polymer for plastics. The material is also used for safety gloves because it has high abrasion resistance and it provides relatively good combined protection Graphene against acids, alkalis and alcohol. Graphene is a material consisting of a single layer of carbon atoms in a hexagonal structure. This structure resembles a honeycomb pattern and is only one atomic layer thick. Preox-aramide Graphene is thus the thinnest known material and has a variety of remarkable properties Preox fibre is created by the oxidation of polyacrylonitrile (PAN). thanks to its unique structure. Usually the preox fibres are mixed in a 70/30 ratio with para-aramides; the mixture is then perfectly suited for thermal and acoustic insulation for technical textiles. HPPE fibre (seats in aeroplanes, protective clothing for fire fighters, heat resistant clothing in foundries) High Performance Polyethylene fibre. Split leather Intercept yarn Created during the splitting process as part of leather production (tanning). This is Ansell brand name for a cut resistant yarn. the middle and lower layer of the leather. It has inherently two rough sides. Kevlar® Spandex Trade name for aramides. English designation for elastane. Latex Taeki5 Latex originally referred to the milky sap of the rubber tree. Brand name for a cut resistant speciality fibre. Today the term is also used for natural rubber or rubber. Latex is not resistant to oil. Thinsulate® Leather Trademark from 3M for a thermal insulation fleece made from synthetic fibre. The name is a Leather is an animal skin that has been chemically preserved by tanning. The natural portmanteau of thin & insulate. It is mainly used in the textile industry for cold protection fibre structure is largely preserved. It has multiple layers, which can be split apart. products. Gloves are primarily made of leather from cattle. Viton Nappa leather DuPont trade name for fluoroelastomers. This relatively expensive material is used in technical Nappa leather is a very soft, chrome-tanned leather from calf or applications as a sealing material with high thermal and chemical resistance. sheep with grain. It is coloured and the surface is finished, which means that the pores are closed by a number of very thin layers, Full leather making the leather insensitive to dirt and moisture. Full leather is the top of the skin (toward the hair side) which has been brought to the required thickness by processing the flesh side or by splitting. 173