The company Marquardt KDB has ceased business operations. This site has been archived and is not updated anymore.
Glossar
A - B - D
- E - H - I
- K - L - M
- P - R - S
- T - W
- A
- Abrasive
- (of a substance or material) capable of polishing or cleaning a hard surface by
rubbing or grinding (e.g. with sandpaper)
- Acid anhydrides
- the compound obtained by removing the elements of water from a particular acid
- Amines
- an organic compound derived from ammonia by replacement of one or more hydrogen
atoms by organic radicals
- Apply
- bring or put into operation or use
- B
- Biofilm
- a thin but robust layer of mucilage adhering to a solid surface and
containing a community of bacteria and other microorganisms
- Blow holes
- holes in hardened duroplastic materials
- C
- Cathodic protection
- corrosion protection by using the opposite current
- Corrosion
- damage caused to metal, stone, or other materials due to the environment
- D
- Deformation
- the action or process of deforming or distorting
- Duroplastic materials
- denoting substances (especially synthetic resins) which set permanently
when heated (see also under thermosetting)
- "DVGW" worksheet W 270
- reproduction of microorganisms on materials used in the drinking water
industry - examination and evaluation
- "DVGW" worksheet W 543
- lexible, pressure-resistant hoses for potable water hose installations,
requirements and evaluation
- E
- Elastomers
- natural or synthetic polymers having elastic properties, e.g. rubber
- EN 971-1
- requirements for varnishes and paints according to the DIN EN 971-1 guidelines
from September 1996 provided by the German association for varnishes and paints (VdL):
"Varnishes and coating materials - technical terms and definitions for coating materials
- part 1: general terms"
- Epoxy resin
- special duroplastic material
- H
- Hardener
- hardeners are used to make duroplastic materials out of resins
- I
- Inliner
- material used for the coating of the insides of pipes and containers
- K
- Kinetic examination
- the study of chemical reaction relating or resulting from motion
- KTW
- guidelines for synthetic materials in contact with potable water
- L
- Laboratory disperser
- specific stirrer
- Low-emission
- low production and discharge of substances, especially gas or radiation
- M
- Macromolecule
- a molecule containing a very large number of atoms, such as a protein,
nucleic acid, or synthetic polymer
- Migration
- movement of chemicals into the water
- P
- Pickling
- preparation of solid bodies by using chemicals in order to change the surface
- Photometer
- instrument to measure the intensity of chemicals in a chemical solution
- Polyaddition
- specific way to form duroplastic materials without the produce of by-products
- Polymere
- a substance which has a molecular structure built up chiefly or completely
from a large number of similar units bonded together , e.g. many synthetic organic
materials used as plastics and resins
- Product analytics
- he determination of the composition and properties of in-house products (e.g. hoses)
- R
- Rheologie
- the branch of physics that deals with the deformation and flow of matter, especially
the non-Newtonian flow of liquids and the plastic flow of solids
- Rheometer
- an instrument for measuring the rheological properties of a substance
- S
- Sandblasting
- roughening or cleaning of a surface with a jet of sand driven by compressed air
or steam in order to prevent from rust, stains, paints or other contamination
- Setting
- to harden something
- Shore hardness
- after Albert Shore, a measure of the hardness of elastomers and plastics.
In practice measures are divided into Shore A and Shore D
- T
- Thermo-mechanical tests
- tests of the mechanical quality of materials depending on strength, temperature and time
- Thermoplastics
- denoting substances (especially synthetic resins) that become plastic on heating
and harden on cooling, and are able to repeat these processes
- Thermosetting
- denoting substances (especially synthetic resins) which set permanently when
heated (see also under duroplastic materials)
- TOC
- total organic carbon is the amount of carbon bound in an organic compound
and is often used as a non-specific indicator of water quality
- W
- Water jetting
- high-pressure cleaners using water pressure up to 2500 bar (see also under sandblasting)