C

41 Posts in this encyclopedia category

C-fibre (carbon fibre)

Carbon fibre is carbon in fibre form used in very strong and lightweight composites. The fibre is characterised by a very small elongation before it breaks (less than a quarter of the elongation of aramid fibre). Carbon fibre has the property that it does not rust under the influence of water and oxygen. The main advantages of carbon fibres are: excellent mechanical properties in both tension and pressure, good thermal resistance (no expansion), low density and good chemical stability. The disadvantages are: very expensive, fragile, sensitive to shocks and poor wear resistance. Carbon fibre composites are used in applications where low weight, high strength and high rigidity are required, such as in aerospace, in the automotive industry, in masts and booms of sailing yachts and in the construction industry. Carbon fibres are mainly used as external reinforcement.

Capillary action

A capillary is a tube with a small inner diameter that can be used to suck up a liquid. This can be done using a suction balloon or by capillary action itself. Capillaries for this purpose are often made of glass so that one can read the liquid level

Carbon

Carbon also called carbon is the common name for a composite material consisting of carbon fibres and synthetic resin. It is distinguished by high strength, high rigidity and low weight. for more info see; https://www.v-sure.eu/en/products/fibre-reinforcement/carbon/

Carbon fabric

Carbon fabric is a fabric composed of carbon fibres.

Carbon fibre

Carbon fibres are mineral fibres employed for reinforcing composites. Carbon fibres have the following good properties: excellent mechanical properties in both tension and pressure, good thermal resistance (no expansion), low density and good chemical stability. As disadvantages, we mention that carbon fibres are very expensive, fragile and sensitive to shocks. Moreover, they have poor resistance to abrasion. for more info, see: https://www.v-sure.eu/en/products/fibre-reinforcement/

Carbon fibre

Carbon fabric is used if the desired properties with glass as reinforcement of the plastic are not feasible. For example, if one wants to achieve high rigidity, carbon fabric is a good substitute for glass fabric. see more info: https://www.v-sure.eu/en/products/fibre-reinforcement/

Cast floor

Screed flooring was introduced a few years ago as residential concrete. A cast floor looks like a concrete floor or a cement floor. It is an easy-to-maintain floor that is fireproof, colourfast and hard-wearing and is available in many varieties. A cast floor, contrary to what the name suggests, is not always cast. Some types are poured, while others are simply applied. Many cast floors are made of a mixture of plastic and resin. for more info, see; https://www.v-sure.eu/en/knowlegde-center/inspiration/discover-the-advantages-of-a-pu-cast-floor/

Cast plate

In gloss casting, the casting plate is the plate that is poured with a casting resin.

Cast rubber

Casting rubber has two applications. First, a casting rubber or liquid rubber is used to make an elastic mould from an existing model with a detailed or complex surface. To make elastic moulds, latex rubber, polyurethane rubber or silicone rubber can be used. Examples include reliefs, rosettes, candles, fossils and sculptures. Secondly, casting rubbers are used to develop prototypes and to easily duplicate parts made of polyester, epoxy, plaster, concrete or wax. see more info; https://www.v-sure.eu/en/products/silicones/

Cast wood

Cast wood is a synthetic wood used for casting off into silicone rubber moulds, for example. It is a liquid polyester resin that has a wood-like structure. After curing, the moulded wood can be worked in the same way as wood. If you treat the moulded wood with a stain and/or colour it, you obtain a real wood imitation. Unfortunately, this product is no longer produced and has been replaced by a PU with filler. For more info; https://www.v-sure.eu/en/pur-mc-6-a-b-2-kg

Casting

A casting coating is a coating that is cast. A cast coating is used to protect electronic components, among other things. For example, Vosschemie offers Flexovoss K6S. Flexovoss K6S is a liquid two-component casting coating that has excellent adhesion to wood, metal and concrete, as well as other plastics. For more info, see:https://www.v-sure.eu/en/flexovoss-k6s-a-b-5-kg

Casting

The objects most commonly used for casting are phenol formaldehyde polyester and epoxy resin. The objects are made by pouring liquid resin into a mould, leaving the resin to cure without any upper or lower pressure and with or without elevated temperature. During casting, it is important that no air bubbles are trapped.

Casting epoxy

A casting epoxy is an epoxy that can be used for casting. Epoxy Glosscoat, for example, is a transparent casting epoxy used for gloss casting. Here, the transparent casting epoxy can be coloured with pigments if required. For more info; https://www.v-sure.eu/en/knowlegde-center/inspiration/creating-a-river-table/

Casting resin

Casting resin is a modern material, which can be processed easily and without great expense. The expertly correct name is 'unsaturated polyester resin' or 'polyester resin' for short. The two components, namely the syrupy polyester resin and a hardener, are mixed in a certain ratio, whereupon a chemical reaction begins that causes the resin to harden completely within a few hours. Since neither a special temperature (room temperature is sufficient) nor pressure is required for this process, anyone can easily manufacture cast resin pieces. By casting in polyester resin, decorative objects with utility value can be manufactured, such as paperweights, bookends, lampshades, medallions, key rings, coasters, etc., among others. For more info: https://www.v-sure.eu/en/casting-resin-gts-mekp-0.5-kg

Cellulose

Cellulose is a polymeric sugar made by almost all plants (especially trees) that gives the plant strength. Wood consists largely of cellulose, but also contains other substances such as lignin. Cotton and cotton wool are almost pure cellulose. Cellulose is used to manufacture paper, textiles, cotton wool, viscose, and celluloid, among others.

Cellulose fibre

Cellulose fibre is a fibre composed of biodegradable carbohydrate polymers. Cellulose is used as a thickening material and to control rheological behaviour. (rheology is the science that studies the deformation of matter and materials, studying the relationships between strain, stress and time).

Cellulose gypsum

Cellulose gypsum is a gypsum made from biodegradable carbohydrate polymers. Cellulose is used as a thickening material and to control rheological behaviour (rheology is the science that studies the deformation of matter and materials, studying the relationships between strain, stress and time).

Cellulose putty

Cellulose putty is a putty made from biodegradable carbohydrate polymers. Cellulose is used as a thickening material and to control rheological behaviour. (rheology is the science that investigates the deformation of matter and materials, studying the relationships between strain, stress and time).

Cement mortar

The method using cement mortar is one used in pond construction. The preparation involves applying a bonding layer, which can be a chipboard, cement mortar or gypsum-jute substrate. The cement mortar substrate is porous on the surface, so some resin is sucked up. The cement mortar must first harden for 28 days before one can start covering with polyester and glass mat.

Centrifugal casting

This processing method consists of pouring filled resins with glass fibres and quartz sand into a rotating tube and using centrifugal force to hurl the mass outwards, i.e. towards the outside of the mould. This produces a smooth outer surface, the thickness of which can be determined by the resin mass applied. This technique is mainly used to produce pipes and tubes.

CHP hardener

A hardener or hardener is the name usually used for peroxides (hardeners for polyester resins) CHP hardener (cyclohexanone peroxide) is only used in specific applications. for more info: https://www.v-sure.eu/en/yc-hardener-chp-gelc.-rep-bottle-20-gr

Coating

A coating (topcoat) is a mixture of substances that can be ironed onto different products. Coatings are applied to metal, wood, glass, plastic, paper, etc. A coating consists of the following components: pigment, solvent, binder. To improve properties, admixtures can also be added. A coating is used to improve the properties of the material. Some examples are: an anti-static coating on polyester films, a coating that makes the coated material conductive and a coating that makes the material impermeable to oil and grease.

Cobalt accelerator

Cobalt accelerators are perhaps the most widely used accelerators and are used in MEKP, CHP and ACP hardeners. A cobalt accelerator is a deep violet liquid (metal). When the accelerator is added, in combination with a peroxide, it starts the formation of radicals, which accelerates curing. Cobalt accelerators have little effect on the colour of the final product, do not give stability problems, no discolouration by UV light and have little effect on air inhibition in the resin after incorporation of curing agents. Cobalt accelerators, on the other hand, are sensitive to moisture and influences of fillers and pigments.

Cobalt octoate

Solutions of cobalt octoate accelerate the curing process. for more info see:https://www.v-sure.eu/en/accelerator-cobalt-1-0-5-kg

Cold glue

Cold adhesive is a white powder made from casein. When touched with water, it forms a good wood glue.

Cold pressing

With the cold pressing technique, the final step of the production process, namely curing, will be done in a closed room. This can be done in several ways. In the pressing process, the top of the mould is sealed with a counter mould and pressure is applied to it. This produces a product with a high glass content, high strength and a smooth surface. Depending on the temperature at which this pressing takes place, it is called cold pressing or hot pressing. In cold-pressing, a normal cold-curing resin can be used.

Cold-curing

Cold-curing means that the process of hardening occurs under normal atmospheric temperature in dry air, usually room temperature.

Cold-curing plastics

Cold-curing plastics are substances in which the process of hardening occurs under normal atmospheric temperature in dry air. Examples of cold-curing plastics are polyester, epoxy, and polyurethane resins. see more info: https://www.v-sure.eu/en/book-cold-curing-plastics

Colour paste

A colour paste is a pigment paste, which can impart a transparent or opaque colour to resin. For example, a quantity of polyurethane colour paste can be added to a casting resin to give the resin the desired colour. Polyurethane colour pastes are known for their strong colouring power. For more info, see; https://www.v-sure.eu/en/products/ancillaries/pigments-dyes/

Composite element

A composite element is an element composed of several parts, often in multiple layers.

Composite laminate

Composite laminate is composed of two (or more) different materials with different properties, each with its own mechanical purpose. The composite composition allows you to combine the good properties of the individual materials. Important composites are the 'fibre-reinforced plastics', which are combinations of resins and reinforcement fibres.

Composite matrix

The matrix is one of the elements that make up a composite product. The matrix is a macromolecular material that connects the various reinforcing fibres. In doing so, the matrix must distribute and transfer the stresses of the structure to the fibres. The intense connection between the matrix and the reinforcing fibres is the basis of any composite material. Many different resins can be considered for this matrix, such as polyesters, polyurethane, vinyl ester, epoxy and silicones.

Composite profile

A composite profile is the L, U or O profile manufactured by the pultrusion method, usually from glass-fibre reinforced polyester.

Composite structure

The composite structure is the composition of two heterogeneous materials, each with its own mechanical properties, into one coherent structure. From this structure, the mechanical properties of the core materials result.

Composites

Composites are heterogeneous materials composed of two different materials with different properties, each with its own mechanical purpose. Composite composition allows one to combine the good properties of the individual materials. Important composites are the 'fibre-reinforced plastics', which are combinations of resins and reinforcement fibres . They are an interesting alternative to several traditional materials because they are both strong and lightweight. Today, composite materials are found in all sectors of industry, ranging from automotive, construction to marine, aerospace etc.

Copper sulphate

Copper sulphate is used together with sodium aluminate as an algaecide in ponds and swimming pools. Both these preparations should be added to chlorinated water alternately every eight days. The physical properties of copper sulphate (CuSO4) are as follows: its molecular mass is 159.6 g/mol, it decomposes below boiling point at 650°C, its density is 3.6g/cm³ and its solubility in water is 20.3 g per 100 ml at 20°C.

Crystalline

In a crystalline substance, the particles of a substance occupy an ordered position in relation to each other. The folded chains then coexist in the folded state. Since plastics are chain molecules, they are difficult to structure. Consequently, most plastics are (partially) amorphous. There are three conditions under which a plastic can crystallise: the chain must be linear (i.e. it must have no branches), the side groups must not be bulky and the chain must have a regular arrangement of the side groups relative to the main chain (tacticity). However, complete crystallisation is not possible in macromolecular substances. This is because the chains never show a completely regular structure and entanglements occur between the chain molecules that disrupt the crystal pattern. Thus, in addition to the crystalline phase, an amorphous phase always occurs in a plastic. Consequently, crystallinity is expressed as the percentage of crystallised material relative to the total polymer.

Curing

Curing refers to the final phase of the curing of a resin mixture.

Curing time

Curing time indicates the length of time required for a resin mixture to cure completely.

Cyanoacrylate

Cyanoacrylate is an acrylate used to make traces on light surfaces and weak traces more visible. One does this by evaporating the examined objects with cyanoacrylate. To improve the contrast of traces on light surfaces and also weak traces made visible with cyanoacrylate, the cyanoacrylate-damped objects can be treated with fluorescent dye solutions.

Cyanoacrylate adhesive

Cyanoacrylate adhesive is composed as follows: it contains methyl, ethyl and butyl ester of cyanoacrylic acid, methyl methacrylate, hydroquinone and phthalates, among others. Cyanoacrylate glue can make the skin stick together. Especially near the eyelids, caution is needed. There is a risk of hypersensitivity with continued skin contact. Cyanoacrylate adhesive is used as a versatile seconds glue.