A material that will undergo a chemical reaction driven by heat, catalysts or other mechanisms, and leading to a relatively infusible state.
A material that cannot be reshaped or formed by heating. EPDM and Butyl are thermosets.
plastics that after being heated and softened during manufacture cannot be changed or softened again Thyristor an electronic component which can be used to control both ac and dc current. With ac current it acts as an electronic switch. With dc current it acts as a latch.
A material, such as epoxies, that will undergo or has undergone a chemical reaction by the action of heat, chemical catalyst, ultraviolet light, etc., leading to an infusible state.
A polymer that doesn't melt when heated. Thermoset polymers "set" into a given shape when first made and afterwards do not flow or melt, but rather decompose upon heating. They are often highly cross-linked polymers, with properties similar to those of network covalent solids, i.e., hard and strong.
A polymer that solidifies when heated, in other words it sets and cannot thereafter be changed, is called a thermoset. Some polymers behave like this because the heating process causes the chains of the polymer to bind to each other, via cross-links, and these cannot then be broken. Polymers that remain malleable after heating and cooling are referred to as thermoplastics. Polymers of this kind can also be cross-linked by the addition of certain cross-linking agents and turned into rigid materials.
A material that hardens or sets when heat is applied and that, once set, cannot be re-softened by heating. The application of heat cures or vulcanizes the material.
A material which will undergo or has undergone a chemical reaction by the action of heat, catalysts, ultraviolet light, etc., leading to a relative insensitivity to temperature changes.
plastics which have permanent physical properties not subject to change.
A plastic that undergoes a permanent chemical change to become infusible and insoluble after cure.
Substances that are cured by heat, but do not soften when subsequently subjected to high temperatures.
having the property of becoming permanently hard and rigid when heated or cured; "the phenol resins and plastics were the original synthetic thermosetting materials"
a polymer that can be heated until soft, poured into a mold, and allowed to cool
polymer in which the chain molecules are cross-linked in three dimensions through covalent bonds
a hard and stiff crosslinked material that does not soften or become moldable when heated. (Compare thermosets with thermoplastics, which do become moldable when heated.) Also, thermosets are different from crosslinked elastomers. Thermosets are stiff and don't stretch the way that elastomers do. (see: elastomer, thermoplastic)
1). To cure through chemical reaction by heat to a point of not being resoftened by subsequent heating. 2). A resin which cures by chemical reaction.
Composite matrix cured by heat and pressure or with a catalyst into an infusible and insoluble material. Once cured, a thermoset cannot be returned to the uncured state.
An epoxy based material that, once formed, cannot be re-shaped or re-formed.
A material which hardens or sets by heat, chemical or radiation cross linking techniques and which, once set, cannot be re-softened by heating.
A term used to describe a plastic that, once formed, will not melt.
Plastic that is heat set.
a hard and stiff crosslinked material. Thermosets are different from thermoplastics, which become moldable when heated. Thermosets are crosslinked, so they don't. Also, they are different from crosslinked elastomers. Thermosets are stiff and don't stretch the way elastomers do. (see: elastomer, thermoplastic)
A plastic which when cured changes into a substantially infusible or insoluble product.
A category of plastics that cannot be reformed upon reheating. Thermosets remain permanently hard.
A plastic material that is capable of being cured by heat or catalyst into an infusible and insoluble material. Once cured, a thermoset cannot be returned to the uncured state.
A polymer that once it is formed, is fixed in that position. Typically a chemical reaction takes place to form a thermoset. Such as epoxy, urethane.
A material which hardens or sets when heat is applied, and which, once set, cannot be resoftened by heating. The application of heat is called "curing."
A term used to describe a wide range of materials that cure through chemical reaction by heat to a point of NOT being capable of melting or softening by subsequent heating. Thermoset plastics are typically harder and more brittle than thermoplastics.
A material that will undergo a chemical reaction when heated, leading to a new solid structure. Typical thermosetting resins are alkyds, urea and melamine, and phenolics.
A plastic which, when cured by application of heat or chemical means, changes into a substantially infusible and insoluble material.
A class of plastic materials that undergo a chemical transformation to become a permanent plastic article. Not readily recyclable.
A material that will undergo or has undergone a chemical reaction by the action of heat, catalysts, ultraviolet light, etc., leading to a relatively infusible and cross-linked state. Typical of the plastics in the thermosetting family are the epoxies, glytals, melamines, urea formaldehyde resins, and phenolics. Thermosets are typically supplied in powder, granules, or modules, and are normally processed by compression molding. Thermosets cannot be remolded once processed.
Plastics, which once cured, cannot be made to reflow.
A term that refers to the family of materials that can be melted only once during the original processing and cannot be reprocessed after the original part is made.
A resin or plastic compound that in its final state is substantially infusible and insoluble.
A material that will undergo a chemical reaction caused by heat, catalyst, etc., leading to the formation of a solid. Once it becomes a solid, it cannot be reformed.
Thermosets are a type of plastic that is the reaction product of two or more chemical compounds. While reacting and while still in a liquid shape thermoset plastics are moulded to form a wide variety of parts. Once the reaction is complete, thermoset plastics form durable solid articles (they "set"). Unsaturated polyester resins that are used to make glass reinforced plastics are an example of a thermoset plastic.
a network polymer obtained by cross-linking a linear polymer to make it infusible or insoluble.
A material that solidifies or "sets" irreversibly when heated. This property is usually associated with crosslinking of the molecules induced by heat or radiation.
A type of plastics that must be cured, forming network like structures that do not soften at high temperature.
a plastic which flows and then sets permanently on first heating, as s result of setting up a three-dimensional cross-linked molecular structure, and subsequently will not soften or dissolve
a classification of plastic resin that cures by chemical reaction when heated and, once cured, cannot be re-softened by heating.
A material which will undergoe a chemical reaction by action of heat, catalysts etc.. Leading to a relatively infusible state.
A material which, when cured by application of heat or chemical means, changes into a substantially infusible and insoluble product.
Resin that, when cured by application of heat or chemical means, changes into a substantially infusible and insoluble material. Thermosetting resins will soften but will not dissolve in any solvents.
A material that undergoes a chemical reaction when heated resulting in a hardened material when cooled. The material does not soften with additional applications of heat.
Products that will only cure when exposed to heat are described as thermoset resins. After they are cured, subsequent heat exposure will have little or no effect on the properties of the cured resin.
Materials that undergo a chemical cross linking of molecules when processed, heated, and molded, and therefore cannot be re-shaped.
A plastic that, when formed, does not melt.
Certain plastics and synthetic resins that once solidified will not resoften or fuse when heated. Thermoset materials may decompose at high temperature, but will not soften or melt.
A material that will undergo or has undergone a chemical reaction by the action of heat, catalysts, ultr-violet light, etc. leading to a relatively infusible and crosslinked state. Typical of the plastics in the thermosetting family are the epoxies, glyptals, ureaformaldehyde resins and phenolics.
Elastomers that undergo a permanent chemical crosslinking of molecules when processed, heated and molded, and therefore cannot be reprocessed.
Material that will undergo or has undergone a chemical reaction by the action of heat, catalysts, ultra-violet light, etc., leading to a relatively infusible state. Typical of the plastics in the thermosetting family are the aminos (melamine and urea), most polyesters, alkyds, epoxies, and phenolics.
A plastsic that, when cured by application of heat or chemical means, changes into a substantially infusible and insoluble material.
a polymer that does not melt when heated.
A plastic material that is capable of being changed into a non-melting or insoluble product by heat or chemical means.