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    Phenolic Resin

    • Last Update: 2021-09-23
    • Source: Internet
    • Author: User
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    Introduction Phenolic Resin (PF) is prepared from phenols and aldehydes through the action of catalysts and curing agents, and through addition condensation reaction.
    It is the first synthetic resin to be industrialized by mankind
    .
    According to the difference of raw materials, catalysts, reaction conditions and reaction systems, different phenolic resins can be prepared
    .
    Because it is often used to make electrical materials, it is commonly known as Bakelite
    .
    In 1872, German chemist Adolf von Bayer synthesized phenolic resin for the first time
    .
    In 1907, the chemist Leo Hendrick Baekeland improved the production technology of phenolic resin and promoted the industrialization of the resin
    .
    In 1910, he established General Bakelite to produce phenolic resins and gave the phenolic resin the brand name "Bakelite" according to his own name
    .
    Features High temperature resistance, even at very high temperatures, it can maintain its structural integrity and dimensional stability, high bonding strength, low smoke, non-toxic, chemical resistance, good sensory characteristics, visual: opaque, touch: hard, hearing: low pitch Smell: odorless form of solid resin, particles, powder, foam, adhesives, fibers.
    Applicable process injection molding, compression molding, transfer molding applications compression molding powder-thermoplastic phenolic resin compression molding powder is mainly used to make switches, sockets, plugs And other electrical parts, daily necessities and other industrial products; thermosetting phenolic resin compression molding powder is mainly used to make phenolic coatings for high electrical insulation parts-woodware, furniture, construction, machinery, motors, ships and chemical anti-corrosion coatings and other phenolic coatings — —Structural adhesive phenolic fiber — protective clothing and flame-resistant fabrics or phenolic foam materials for interior decorations — central air-conditioning systems, light-weight thermal insulation color steel plates, house thermal insulation, energy-reducing thermal insulation, chemical pipeline thermal insulation materials (especially deep and low temperature Insulation), phenolic composite materials in the field of insulation in places such as vehicles and ships-phenolic resin adhesives such as phenolic resin FRP, phenolic-epoxy composite FRP and other phenolic resin adhesives.
    Phenolic resin adhesives have high bonding strength, high temperature resistance, water resistance, oil resistance, and easy Modification is one of the most widely used varieties in the field of synthetic adhesives
    .
    A single phenolic resin is brittle and is mainly used for bonding plywood and precision casting sand molds; adhesives based on phenolic resins modified by other polymers play an important role in structural adhesives
    .
    ? Phenolic resin paint Phenolic resin paint or phenolic resin paint is a paint or phenolic resin paint made of phenolic resin or modified phenolic resin as the main resin.
    It has been used in the coating industry for more than 70 years, mainly to replace natural resin and dryness.
    Paint with oil
    .
    Phenolic resin imparts hardness, gloss, quick-drying, water resistance, acid and alkali resistance, and insulation properties to coatings.
    Therefore, it is widely used in woodware, furniture, construction, ships, machinery, electrical and chemical corrosion protection, etc.
    However, phenolic resin is in the aging process The medium paint film is prone to yellowing, so it is not suitable to make white and light-colored paints
    .
    ? Phenolic fiber Phenolic fiber is a kind of golden or yellow-brown fiber with outstanding flame resistance performance.
    The limiting oxygen index is 34.
    It is instantly exposed to the oxygen-acetylene flame at nearly 7500℃.
    It does not melt or spread.
    It is self-extinguishing and resistant Concentrated hydrochloric acid and hydrofluoric acid, but poor resistance to sulfuric acid, nitric acid and strong alkalis
    .
    Phenolic fiber is mainly used as protective clothing and flame-resistant fabrics or interior decorations.
    It can also be used as insulation, heat insulation and heat insulation, filtering materials, etc.
    , and can also be processed into low-strength and low-modulus carbon fiber, activated carbon fiber and ion exchange fiber
    .
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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