{"id":835,"count":17,"description":"<strong>Resin<\/strong> is a very sticky natural or synthetic compound that hardens under certain conditions. For example, pine sap is a sticky substance that hardens over time and is considered a natural resin. On the other hand, we have synthetic resins, which include thermoplastics, epoxy, thermoset, polyester, etc. In the rest of this article, we will learn more about the types of resins.Types of Resins In the rest of this article, we will learn more about the types of resins. <strong>Acrylic Resin<\/strong>Acrylic resin is a thin, waterproof layer that prevents water and moisture from penetrating after use. Acrylic resin is divided into two separate groups called thermoplastic and thermoset. Thermoset type has better gloss than thermoplastic and also has greater chemical resistance. <strong>Alkyd resin<\/strong>Alkyd resin is used in almost all oil paints. <a href=\"https:\/\/kimiafiber.com\/shop\/resin\/\"><strong>Alkyd oil resin<\/strong><\/a> creates a durable and resistant layer on a surface such as wood. This type of resin is inexpensive and is widely used for renovating various surfaces. Alkyd resins also have high chemical resistance and electrical\/thermal properties. <strong>Polyester Resin<\/strong>Polyester resin is mixed with a certain amount of hardener just like epoxy resin, except that unlike epoxy, polyester resin must spend time in an oven. This durable material is very useful for making artificial stones and sculptures. Polyester resin is cheaper than epoxy resin, but it is also much more toxic! Therefore, you must follow all safety precautions when working with this resin.Unsaturated polyester resins are widely used throughout the world. These resins are very flexible and have high resistance to heat and chemicals. Polyester resins are mainly low-cost and are used in various processes such as construction, lamination, aircraft and ship components, decorative accessories, coatings, etc. <strong>Vinyl ester resin<\/strong>Vinyl ester resin has excellent mechanical and chemical properties and is highly resistant to hydrolysis and corrosion. Vinyl ester resin has similar applications to polyester resin. The most common use of this resin is in the coating of concrete and steel structures. <strong>Epoxy resin<\/strong>Epoxy resin is highly efficient and is always used with a hardener. Epoxy resin is effectively used to strengthen, repair, and reinforce various structures (especially composite products). Epoxy resin also has artistic applications, as it is less toxic. For example, this resin can be used in the production of decorative items and jewelry. Epoxy resin has high resistance and also has good adhesion properties. It is worth noting that epoxy resin is also considered an excellent electrical insulator and is therefore widely used in the production of various electrical components such as generators.<strong>Other types of resins<\/strong> <strong>Polystyrene resin:<\/strong> These are inexpensive resins with acceptable transparency and flexibility. <strong>Polypropylene resin:<\/strong> These resins have good heat resistance and are often used in the production of medical equipment. <strong>Polyamide resin:<\/strong> Types of polyamide resins with a low coefficient of friction have good resistance to abrasion and chemicals. <strong>Polycarbonate resin:<\/strong> These resins are thermoplastics that have a high refractive index and good resistance to filtration and staining. <strong>Phenolic resin:<\/strong> Phenolics are included in the list of thermosetting resins. Phenolic resins have high strength and resistance to heat and impact and are easily machined.<strong>Unsaturated polyester resin<\/strong> is a type of polymer and a category of resins that is also known by the abbreviation UPR. This type of resin is marketed in two types: orthophthalic and isophthalic and is used in many industries. Unsaturated polyester resin has high plasticity and is therefore used as one of the basic materials in structures.It is used in various applications such as plastic products, paints, etc.In the rest of this article, we intend to look at the characteristics of this type of resin from all angles and also compare it with types of saturated polyester resin; stay with us.<strong>What is unsaturated polyester resin?<\/strong>Polyesters are a subset of synthetic resins that are divided into two groups: saturated (thermoplastic) and unsaturated (thermoset). The saturated types melt when heated and solidify when cooled. On the other hand, unsaturated types do not melt when heated, but rather decompose irreversibly at high temperatures.Unsaturated polyester resin is the most widely used type of resin, which is produced in three types: orthophthalic, isophthalic, and terephthalic. Unsaturated polyester resin types can be used in various ways such as hand lamination, screw thread, molding, RTM, pultrusion, SMC, and BMC.<strong>Raw materials for unsaturated polyester resin<\/strong> <strong>Unsaturated dicarboxylic acid<\/strong>The important carbon-carbon double bond is the characteristic of unsaturated polyester resin, which is produced through dicarboxylic acid. Dicarboxylic acids such as maleic anhydride, maleic acid, and formic acid are used to produce this type of polyester resin. <strong>Saturated dicarboxylic acid<\/strong>The use of saturated dicarboxylic acid will have an important impact on the curing reaction as well as the mechanical and strength properties of the final product. In other words, it is essential to have a combination of saturated and unsaturated dicarboxylic acids. In the list of saturated dicarboxylic acids, orthophthalic acid, phthalic anhydride, and isophthalic acid are widely used. <strong>Glycol<\/strong>Glycols are widely used in the production of unsaturated polyester resin. Among the most common ones are diethylene glycol and dipropylene glycol. <strong>Dicyclopentadiene (DCPD)<\/strong>DCPD is a by-product of naphtha cracking that has properties such as high heat resistance. Also, in the production of unsaturated polyester, the presence of this substance prevents shrinkage.<strong>Method of producing unsaturated polyester resin<\/strong>The production of unsaturated polyester resins is carried out through the decomposition of organic peroxides, by means of an accelerator or by applying heat, or both. In general, unsaturated polyester resin is produced by the reaction of an unsaturated dicarboxylic acid with a saturated acid, along with a polyfunctional alcohol and the resulting polymer network is crosslinked with styrene.<strong>Advantages of unsaturated polyester resins<\/strong> Flexible structure Excellent and long-term durability against water High resistance to extreme weather conditions Resistant to high temperatures and UV rays Cheaper price compared to most resins available in the Iranian market High chemical resistance to substances such as acids or vegetable oils<strong>Unsaturated polyester resin price<\/strong>Buy and sell all types of resins Unsaturated polyester is abundant in the Iranian market, as these materials are used in various industries. The price of unsaturated polyester resin varies depending on its type. Also, things such as the manufacturer and the quality of the product have a significant impact on the final price. You can contact Kimia Fiber experts now to get advice on purchasing unsaturated polyester resin.&lt;img class=&quot;aligncenter wp-image-619 size-full&quot; src=&quot;https:\/\/kimiafiber.com\/wp-content\/uploads\/2023\/12\/\u0631\u0632\u064a\u0646-\u067e\u0648\u0644\u064a\u0633\u062a\u0631-\u063a\u064a\u0631\u0627\u0634\u0628\u0627-2.webp&quot; alt=&quot;\u0642\u064a\u0645\u062a \u063a Unlike unsaturated types, saturated polyester resins do not have double bonds in their main chain, so there is no unsaturated factor in this type of polymer.Unsaturated and saturated polyester resins are also slightly different in terms of application. Saturated types are mostly used in the production of coil coatings. However, unsaturated types are usually used to produce laser printers, sheet molds, etc.Buy all types of resins from Kimia Fiber CompanyKimiya Fiber Company provides the highest quality services in the field of resins, fiberglass and composites to its valued customers nationwide. Kimiya Fiber Group is proud to produce and supply zero to one hundred glass fiber products, various types of resins, polyurethane foams, etc. at affordable prices, with more than forty years of brilliant history and useful experience.","link":"https:\/\/kimiafiber.com\/en\/product-category\/resins\/","name":"Resins","slug":"resins","taxonomy":"product_cat","parent":0,"meta":[],"menu_order":0,"_links":{"self":[{"href":"https:\/\/kimiafiber.com\/en\/wp-json\/wp\/v2\/product_cat\/835","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kimiafiber.com\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/kimiafiber.com\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"wp:post_type":[{"href":"https:\/\/kimiafiber.com\/en\/wp-json\/wp\/v2\/product?product_cat=835"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}