21 Posts in this encyclopedia category


Acetone (also known by the names dimethylketone and 2-propanone) is a liquid widely used as a cleaner. It is the simplest organic chemical compound containing a ketone group. Acetone is a volatile and highly flammable liquid. Its melting point is -95.4°C and its boiling point is 56.53°C. Although acetone is toxic, skin contact is less harmful than with many other solvents. It also has disinfectant properties. Acetone is mainly used as a cleaning agent for tools. For more info: https://www.v-sure.eu/en/cleaning-agent-a-1-l


Acrylate is a very clear, UV-resistant plastic. Thanks to its unique weather resistance and high wear-resistance, it can be used as glazing material in many ways. In addition, acrylate is around 25 times stronger than glass in the same thickness. A major advantage is that acrylic will not shatter when broken but will break into a number of large pieces. Acrylate can withstand intensive processing, unlike polycarbonate, for example. By polishing, for example, saw edges (solid sheets), one can very easily give the material a nice finish and thereby mount it in sight without using profiles. To bend acrylate, the material must always be heated. for more info;https://www.v-sure.eu/en/products/acrylate/

Adhesive sealant

Sealants are mostly inorganic substances used to bond objects of various kinds together. Sealants harden without evaporation of the solvent


Aeroball is a phenol filler for lightweight fillings.


Aerocell is a finishing powder consisting of microscopic balloons. These are hollow, white spheres of extremely low density. They give a lightweight filler for use above the waterline, which is easy to sand. Glue powder should also be added to a finishing mixture to prevent sagging in large layer thicknesses and to simplify application. for more info, see: https://www.v-sure.eu/en/products/ancillaries/aerocell-aeroball/


Albastine is used to fill holes in walls. It is easily paintable.

Algae paint

Algae paint is a copper-based antifoul used for boat maintenance (algae-inhibiting paint for the hull below the waterline). The use of copper-based antifoulings on pleasure boats has been banned by the Board for the Authorisation of Pesticides (CTB) from 1 March 1999. Copper-based antifoulings may only be used by the professional seafaring (and offshore industry) and navy.However, buying, selling and possessing this paint, which is harmful to the wet environment, is not prohibited. The likely consequence is that many private individuals treat their boats with this paint, in violation of the law.


An easy-to-use impression material based on natural and biodegradable fibres. Ideal for quickly producing negative forms of body parts. For more info, see; https://www.v-sure.eu/en/products/ancillaries/alginate/


Molecules with an aliphatic compound have an open carbon chain. Aliphatic hydrocarbons do not have benzene rings. When a hydrocarbon molecule does contain benzene rings, it is called an aromatic hydrocarbon. Usually in the case of polyurethanes. These are then UV-resistant.


An amine is a functional group consisting of a nitrogen atom with three carbon or hydrogen atoms bonded to it. The designation amine is also used for an organic chemical compound with such a group. Amines resemble ammonia (NH3) in structure. The simplest amine is methylamine and the simplest aromatic amine is aniline. Amine compounds generally have an unpleasant odour.

Amine accelerator

An amine accelerator speeds up the curing process of polyester and vinyl ester with BPO. The possible disadvantages of amine accelerators are that they provide a limited potlife, give a yellow to brown colour after curing and are sensitive to UV light at cured stage. Depending on the application, three accelerators are used: DMA (dimethylaniline): the most commonly used amine accelerator.


An amorphous material is a material that is not liquid at a temperature below the solidification temperature and has no crystalline structure. By cooling a liquid very rapidly (a cooling rate of 1,000,000 Kelvin per second), one can obtain an amorphous structure. In terms of physical properties, amorphous materials have, among other things, a lower softening temperature, lower specific gravity, higher flexibility and greater transparency than crystalline materials. Note that a material is always amorphous to a certain percentage. Thus, a material contains both amorphous and crystalline phases. A well-known example of an amorphous substance is the so-called metallic glasses.


Anisotropic substances are substances whose natural properties such as elasticity, thermal conductivity, refraction of light, permeability of magnetism depend on direction. For example, certain crystalline substances have different properties in different directions

Anti rust mat

Anti-noise mats are products that belong to the Car system range. They absorb shocks and noises in the car.

Anti rust mat

Antirust spray is a product that belongs to the Car system range. It is a sprayable liquid that combats rust on cars


Antifouling is the prevention of fouling (including algae, barnacles and the like) on ships, among others. When developing alternative antifouling techniques, a division is made between chemical strategies (derivatives of natural products, organic biocides, proteins, etc.) and physical strategies (non-stick, fibres, electrochemical techniques).

Antislip poeder

Anti-slip powders are added under a lacquer or coating to prevent the surface from becoming too slippery (e.g. on stairs and floors). for more info see:https://www.v-sure.eu/en/antiskid-powder-50-g

Aramid fibres

Aramid fibres are synthetic fibres used as reinforcement materials, as high-performance engineering tools and in safety clothing (bullet and shrapnel resistant vests and fire-resistant clothing). The main advantages of aramid fibres are very high tensile strength, low density, no thermal expansion, good shock absorption and resistance to impact and good chemical stability. The main disadvantages of aramid fibres are that they are difficult to process and show weak resistance to compressive forces. Thus, preparation and processing of the fibres is greatly complicated by their extremely high melting point and low solubility. Spinning is therefore not done from a melt but from a solution in concentrated sulphuric acid. Subsequently, the fibres are slightly stretched to further increase their mechanical properties. For more info, see: https://www.v-sure.eu/nl/producten/vezelversterking/


Aramid is the monomer from which polyaramide can be manufactured by polycondensation. Polyaramid is chemically related to nylon (polyamide). The difference from nylon concerns the presence of an aromatic group (benzene ring) in the chain, where nylon has a single set of carbon atoms. Polyaramid is characterised by particularly high tensile strength, low weight, small elongation and resistance to relatively high temperatures. Aramid fibres are used in bullet and fragment-proof vests, towing and hoisting cables, fire-resistant clothing and strong and lightweight composites, among others. for more info; https://www.v-sure.eu/nl/producten/vezelversterking/kevlartape/


Aromatic means fragrant but is also used in the context of aromatic compounds in chemistry. An aromatic compound is then an organic compound in which there is a conjugated system of π-bonds in which 4n+2 electrons are delocalised. When not two, but four electrons are shared between two atoms, thus providing the chemical bond (a so-called double bond, two of those electrons are located between the atoms, and the other two are located in a plane adjacent to the bond. The latter two are called π-electrons. These π-electrons are not only between the atoms they bind, but also a little bit next to them. When two double bonds in a structure are separated by a single bond, the π-electrons of the two double bonds lie in the same plane, and the π-electrons can come from one double bond to the other. Such systems are called conjugated, and the electrons that can move through the molecule are called delocalised. When a conjugated system contains 4n+2 electrons (6 or 10 or 14 etc.), this provides a very large extra stability to the molecule. A molecule with such a system is called aromatic.


An autoclave is a device that uses steam under pressure to sterilise instruments, glass, certain plastics and cloths. Processing in the autoclave uses both pressure, vacuum and temperature. This technique is fairly expensive as the investment of the autoclave is quite high. The autoclave is also used when making moulded parts. Here, prepregs (pre-impregnated fibres) are placed dry in the negative mould and then heated at a temperature of 120 °C to 200 °C using bottom and top pressure, depending on the moulded part to be made.