Description: Chlorine-sulfonated polyethylene containing 1.5% sulfur and 27% chlorine. Its properties are comparable to those of chlorine-butadiene-rubber CR. Because of the chlorine atoms contained within
Description: A transponder is a transmitting unit with a defined frequency range. It is used for (mainly wireless) communication, displaying or controlling tasks. It receives
Description: TFB is a thermoplastic fluoroterpolymer, which consists of tetrafluoroethylene (TFE), hexafluoropropylene (HFP) and vinylidenefluoride (VDF). TFB is also known as THV® from Dyneon. The
Description: Raw monomeric chloroprene is a colourless fluid. It is insoluble in water but soluble in most organic solvents and has got a tendency towards
Description: Time needed by a chemical for permeating through a material. An important characteristic, e.g. for gloves, which can be determined. Relevant question for this
Description: Permeation tubes are small, inert tubes containing a chemical compund in its pure form. The chemical is in a two phase equilibrium (either between
Description: Produced by hydrolysing ethylene-vinyl-acetate polymers. EVOH features good barrier qualities, mechanical stability, elasticity, brightness, transparence and resistance to weather and abrasion. Usage: Packagings and
Description: PPOs are a family of amorphous, intransparent, light-grey-colored thermoplastics. They feature an outstanding stability at high temperatures and therefore can be applied within a
Description: Diffusion is the mechanism causing microscopic particles from fluids or gases to spread out freely and evenly within a given volume or through (semi-)permeable
Description: Raw PE can be obtained in form of a milky white, partly crystalline powder by polymerisation of ethylene (high-pressure, mid-pressure and normal-pressure method). It
Description: Testing fuel for determining permeation and resistance properties in general. Composition: 79 – 86 vol% Ethanol Depending on amount of ethanol: 14-21 vol% Hydrocarbon
Description: Produced by adding a carboxylic acid group to a nitrile-rubber, this material contains more cross-linking points than the common NBR. The result is a
Description: FPM is an elastomer based on fluoro-rubber. FPM is characterised by his resistance to heat, chemicals, atmospheric exposure and ozone. FPM is resistant in
Description: Chemistry means the science dealing with the structure and the behaviour of matter as well as with the according principles. Category:Definition
Description: A polymer is a chemical compund that consists of molecule chains (macromolecules). The process of formation of the chains, i. e. the linking of
Description: Permeation rate is a measurement for the amount of substance (permeate) permeating through a solid within a certain time. The rate indicates the amount
Description: Odourless, transparent and thermoplastic fluorocopolymer consisting of vinylidenefluoride and hexafluoropropylene. Usage: envelope for fibre-glass circuit envelope for cupper cables Formula: Category:Thermoplastic
Description: The process called facilitated diffusion takes place when a substance passes through a membrane being conveyed to the other side by a so-called carrier.
Description: Containing a quite small number of ionised acid groups, these ionomers are characterised by good flexibility and impact strength within a wide range of
Description: Transparent, modiefied Nitrile with excellent chemical stability, high gas barrier and high resistance module. The permeabiliy of AMA is independendent of the presence or
Description: Copolymere consisting of butadiene and acrylic nitrile. Good resistance to hydrocarbons out of mineral oil or fuels. There are different product qualities, depending on
Description: Application temperatures up to ca. +130°C, resistant to water, steam and weather.EPDM can be vulcanised with sulfur; EPM can be cross-linked using peroxides. Usage:
Description: Solvents are fluids that are able to contain gases, solids, and other fluids without undergoing chemical reactions. Category:Definition
Description: These polyethers containing cross-linkable glycidyl groups are usually produced by polimerisation of Bisphenol A and epichlorohydrin or reacting phenolic novolak with epichlorohydrin. Usage: Protective
Description: Composites are materials consisting of several other materials, whereby all technical relevant properties are enhanced during the synthesis. Compounds for composites are mainly polymers,
Descpription: Also called melamine resin; temperable condensation product of melamine and formaldehyde; colourless and transparent. MF features high surface hardness, abrasion-resistance and resistance to fire,
Description: features an excellent resistance to heat and hot oil. ACM ist also resistant to heay oils (sulfuric, amine or saponifying cross-linking). Covers a range
Title: Rubber, vulcanized or thermoplastic – Rubber sheets and rubber-coated fabrics – Determination of transmission rate of volatile liquids (gravimetric technique) (ISO 6179:1998); German version
Description: Thermoplastic of milky white color that feels like wax. Because of its special properties, this material has a unique position compared to other thermoplastics.
Description: Technique for permeation rate measurement of a fluid through a film-like polymer. The material of which the permeation rate has to be determined is
Description: Testing fuel for determining permeation and resistance properties in general. Composition: 10 vol% Ethanol 90 vol% Fuel C Category:Testing Fuel
Description: Coating that prevents a substance from permeating through a such protected surface. Materials whose permeability is low in genereal are preferred, e.g. aluminium. In
Description: PNB is an amorphous polymer with high thermal stability, optical transparency and a low dielectric constant. Usage: PNB can absorb very large amounts of
Description: Polysiloxane is a normally odorless and non-toxic material that is stable within a wide range of temperature. It features good resistance to sunlight, ozone
Beschreibung: Norming data sheet dealing with “Plastics – Film and sheeting – determination of the gas transmision rate, part 1: the differential pressure method”. It
Description: Norming data sheet dealing with “Plastics – Film and sheeting – determination of the the thickness by mechanical scanning”. The method is not suitable
Description: Flexible and linear structured polyolefines; the homopolymers are produced from But-1-en, the copolymers contain ethylenes. Some of their important characteristics are: excellent resistance to
Description: Functionalised polymers are chemical compounds composed of molecular chains (macromolecules) with funtionalised side chains. Category:Definition
Description: A substance accelerating normally slow-running chemical or biochemical reactions is called catalyst. The catalyst is never consumed during the reaction so there is always
Title: Standard Test Method for Rubber Property -Effect of Liquids Category: Elastomer Please note: Complete standard sheets are made available by Beuth Verlag.
Description: A polybutylene succinate produced from blown film has large anisotropy of the tensile strength between the longitudinal and transverse directions and is characterized by
Description: Testing fuel for determining permeation and resistance properties in general. Composition: 50 Vol.% Toluene 30 Vol.% Isooctane 15 Vol.% Diisobutylene 5 Vol.% Ethyl alcohol
Description: PSU, an amorphous thermoplastic, belongs to the family of high temperature resistant polymers and contains sulfone (-SO2-) and ether (-O-) functions between the partly
Descpription: Copolymer composed of ethylene and methacrylate containing carboxylic side groups (COOH). The properties of EAR include excellent resistance to ozone and an extraordinary energy
Description: ISO = International Organisation for Standardisation ISO is a network of the national standards institutes of 156 countries, on the basis of one member
Description: Chemical compounds that produced by chemical methods are called chemicals. They are produced in laboratories, the chemical industry and bioreacors. Category:Definition
Description: Collective name for organic acrylic glasses composed of polymethacrylates, which are produced by polymerisation and additional extrusion and injection molding. They feature high transparency
Description: Specific temperature at which amorphous or partly crystalline polymers pass from the solid state into the liquid phase. When reaching the glass transition temperature,
Description: The term “semipermeable” means half diaphanous. It is often used regarding membrane properties and contains the meaning of “selective permeable”. Semipermeability means that a
Description: Testing fuel for determining permeation and resistance properties in general. Composition: 75 vol% Fuel C 25 vol% Methanol Category:Testing Fuel
Description: Linear structured polyesters of the carbonic acid which combine many properties of metals, glass and plastics. They are transparent and feature a very good
Description: PET is often just called polyester. The material is hard and stiff, rigid, resistant to deformation and only little water-absorbant. PET features a good
Usage: Floor covering, protective sealings, printed circuit boards, canvas, several material grades Category:Definition
Description: During a permeation rate measurement, the retentat is the depleated particle stream that leaves the separated measuring cell (see also: permeat = loaded particle
Description: Fuels are materials emitting technically usable energy while they are burned.Examples for solid fuels: Wood Carbon Nuclear fuels (like uranium or plutonium) Wax Examples
Description: Although CR combines many preferable properties, none of these reach peak values. In general, it features good mechanical qualities. At low temperatures, CR undergoes
Descpription: Produced by radical polymerisation of acrylic nitrile, PAN is a plastic which is insoluble in water. It has a density of 1.16 to 1.19
Description: SR is produced by reaction of sodium polysulfide with an organic dichloride. The result is a product with outstanding resistance to oils, greases and
Description: This plastic the monomers of which are existant in form of a colorless, specificly and intesivly smelling gas is hardly soluble in water but
Descpription: Polyisobutylene is obtained by cationic polymerisation of isobutene with boric trifluoride as cataylitic agent at temperatures below -50°C in form of either viscous oils,
Description: Nafion is a copolymer of tetrafluoroethylene (Teflon) and perfluoro-3,6-dioxa-4-methyl-7-octene-sulfonic acid. Like Teflon, Nafion is highly resistant to chemical attack, but the presence of its
Description: A permeation measurement cell is a testing unit for permeation rate measurements. The actual process of permeation takes place in this cell: The solid
Description: Both monomers can be copolymerised in any proportion. Products containing less than 30 mass percent of ethylene are partly crystalline and thermoplastic, those containing
Description: Covers a wide range of temperature, good heat-resistance. Shows a very good flexibility at low temperatures. The structure of AEM is comparable to the
Description: This thermoplastic features the following properties: mechanical strength, stiffness, hardness, high durability at high temperatures, good resistance to chemicals and a consistent low flammability
Description: This semi-cyrstalline, white or whiteish looking polyester composed of dimethyl-therephthalate and butanediole can be compared to polyethylene-therephthalate (PET) concerning its composition as well as
Description: This process means the determining the composition of a certain material (in this case: a polymer) in order to characterise its different properties such
Description: Testing fuel for determining permeation and resistance properties in general. Composition: 92,5 vol% Fuel C 5 vol% Methanol 2,5 vol% Ethanol Category:Testing Fuel
Descpription: An ion is an atom or molecule which carries a positive or a negative charge. The charge is caused by a lack or an
Description: A hose consisting of several material layers. The material combination provides optimisation of permeation properties (resp. density) and chemical resistance. Usage: Protective hoses (for
Description: Polyvinylfluoride (PVF) is a fluorine-containing polymer. PVF is a thermoplastic and belongs to the fluorine synthetic class of polymers. By polymerizationreaction the vinylfluoirde molecules
Description: Being a sythetic natural rubber, IR is very similar to NR but can be produced more evenly and purely. Usage: IR is mostly blended
Description: Since 1988 FEP is the abbreviate form for coplymers consisting of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP). FEP is a thermoplastic copolymer, which is characterized
Description: Amine-cross-linking, thermal resistance up to +135°C, CO is only flexible at low temperatures down to -15°C, little swelling in oil and benzine, resistant to
Description: A general characterisation is impractical because of the wide range of possible modifications. The production of polyesters is done by linking the monomers via
Description: The diffusion coefficient characterises the thermal migration of molecules within a certain material.SI-Unit (m2/s). Category:Definition
Description: Basically, there are two methods usable for seperating gases: separation by membranes (view also: permeability) using membrane contractors whereas the membran itself takes no
Description: Also called “AMS 2629 Type I”. Testing fuel for determining permeation and resistance properties in general. Composition: 31% (by weight) Toluene 34% (by weight)
Description: Testing fuel for determining permeation and resistance properties in general. Composition: 10 vol% Methyl-tert-butylether (MTBE) 90 vol% Fuel C Category:Testing Fuel
Descpription: The word “hygroscopic” is a technical term used in chemistry and physics. Hygroscopic materials are water-attracting substances. Those substances show the tendency to bind
Description: Linear-structured, gel-free copolymer resin made from Isobutylene and quite small amounts of Isoprene. Usage: Used in tire industry, for heat-resistant tubes an in rubber-processing
Description: This polymer made of propylene has a structure similar to the one of PE but each second carbon atom of the backbone is linked
Description: Amorphous, flavourless and odourless plastic which is obtained by radical polimerisation or, on a large scale, by emulsifying polymerisation of acidic acid vinyl ester.
Description: Produced by vapor-phase-polymerisation of p-xylene. The main component is Parylene-N (poly-p-xylylene), a highly criystalline material with a linear structure. Usage: Encapsulating of electronic and
Description: SB (SBR = styrene-butadiene-rubber) consists of Butadiene and more than 50% Styrene. They feature good transparency and resilience and can be easily processed. Usage:
Description: DIN = German Institute for Standardization (registered association) German institute, responsible for standardisation and developing German Standards. It represents German interests at international and
Descpription: Transparent, amporphous copolyester (synthetic resin) composed of cyclohexylene-dimethyldiole and therephthalic acid featureing a very good resistance to high tempertures. Usage: Bags Formula: Category:Thermoplastic
Description: ECTFE is a fluorinecopolymer, which consists of ethylene and chlorotrifluoroethylene (CTFE). This partially fluorinated, semi-crystalline fluorinecopolymer offers a unique combination between mechanical properties, chemical
Description: EFEP is a transparent terpolymer, which is consisting of ethylene, tetrafluoroethylene (TFE) and hexafluoropropylene (HFP). Due to his resistance to atmospheric corrosion and his
Description: Fuel cell technology is concerned with developing fuel cells for efficient production of energy. Compared to other energy sources, fuel cells have a very
Description: Normally inmeltable, often amber-colored and highly temperature-resistant high-performance polymer consisting mainly of aromatic molecules. Polyimides feature excellent high-temperature properties as well as an extraordinary
Description: AU is a high-molecular organic material the structure of which is marked by a high number of Urethane-groups. Within defined ranges of temperature, Polyurethane
Description: Industrial chemical, frequently used source material vor synthesis; white to light brown flakes or powder Usage: Important source material for a variety
Description: PAIs are amorphous high-performance polymers with linear structured, mainly aromatic molecules and a high heat resistance. They feature good high-temperature-properties as well as a
Description: Amorphous, transparent, amber-colored high-performance thermoplatic with a cyclic structure, containing aromatic diethers, dianhydrides and aromatic diamines. Compared to PEEK, it is less temperature-resistant and
Description: Aliphatic polymers composed of carbon monoxide, ethylene and minor amounts of other aliphatic olefines. This unique new family of semi-crystalline polymers features many properties
Description: Multi-layer-foils are thermoplastic plaxtic films composed of two or more combined, different or similar, layers. The layers are put together e.g. by coextrusion or
Descpription: SBS are produced by anionic polymerisation whereat each block is built up by gradual addition of the monomers. Main properties of SBS are good
Description: E/TFE is a semi-crystalline, transparent and thermoplastic fluorinecopolymer, which is characterised by resistance to chemicals, good mechanical properties and good resistance to atmospheric corrosion.
