Introduction of polyphenolic resin, polyester resin, vinyl resin, epoxy resin, phenolic resin differ

Polyphenol oxy tree refers to epoxy resins with molecular weights in the range of 100,000 to 450,000, which are called ultra-high molecular weight epoxy resins, also known as phenoxyl resins (phenoxyl resin).

The difference between polyester resin, vinyl resin, epoxy resin, phenolic resin, etc.

Dear, I am glad to answer for you: polyester resin vinyl resin epoxy resin phenolic resin The difference between polyester resin vinyl resin epoxy resin phenolic resin From the molecular structure, polyester resin is mainly obtained by polycondensation of diacids and diols, because the molecular structure contains ester bonds, so it is called polyester resin. In application, the active groups at both ends are mainly used, and the carboxyl and hydroxyl groups are the majority.

The curing reaction is also dominated by polycondensation, which produces small molecule volatiles such as water. Vinyl resin refers to a resin that contains a -c=c-vinyl structure in its molecular structure. Different groups can be attached to the side chain by chemical reactions.

When applied, it mainly relies on the double-bond ring-opening reaction to form cross-linking curing. There are no small molecule by-products and UV light-initiated curing is also possible. Of course, if there are other reactive groups on the side chain, such as epoxy groups, then these groups will also react when the conditions are right.

Epoxy resin refers to a resin that contains an epoxy group in its molecular structure. Due to the epoxy ternary ring, it is very unstable, so it exhibits high chemical activity. There are no small molecule by-products in the curing reaction of epoxy resin, the curing shrinkage is small, the electrical properties are good, and the bonding effect is good.

Phenolic resin refers to the resin obtained by polycondensation of phenols (phenol, o-cresol) and aldehydes (formaldehyde). Contains phenolic hydroxyl groups, which can be further re-underwent polycondensation reaction. The polycondensation reaction has small molecular by-products.

If you carefully observe the production materials of many daily necessities and decorations, you will find that there are phenolic resins in many supplies. So, what is a phenolic resin? What is it used for?

Below, Tuba Rabbit will give you a brief introduction to phenolic resin, as well as its uses, advantages and applications, to help you understand this material.

Phenolic resin

Phenolic resin is a synthetic plastic, usually colorless or yellow-brown, in liquid state and solid. Since it is often used in some electrical equipment, it can also be called "bakelite". In terms of classification, phenolic resin can usually be divided into two different resins, thermoplastic and thermoset, but its storage method should be noteworthy, under normal circumstances, it is suitable to be placed in a cool, dry and ventilated place, not in an overheated environment, in addition, it is best to be equipped with fire-fighting equipment.

Advantages of phenolic resins:

The advantages of phenolic resin are that it has good resistance to high temperature and water, and is not easy to burn, and it has good acid resistance, but it has poor alkali resistance. At the same time, phenolic resins are easy to cut and are often used in electrical equipment, so they have good mechanical and electrical properties. In addition, phenolic resin is not easy to degrade and has a long storage time.

Among them, if you dislike the poor alkali resistance of phenolic resin, you can add some components to the phenolic resin to improve, so that the phenolic resin can obtain some special properties, such as alkali resistance, wear resistance and so on.

Uses of phenolic resins

Due to the high temperature resistance of phenolic resin, it can keep the structure of the object unchanged in a high-temperature environment, that is, stability, therefore, phenolic resin can be used in some high-temperature fields, such as some fireproof board and other refractory materials, as well as some casting, thermal insulation materials and so on. In addition, phenolic resin has good water resistance, so it can be made into a binder for bonding wood and other materials.

In addition, phenolic resin is easy to cut, has excellent mechanical properties and good acid resistance, and can be improved by adding some ingredients, which makes it possible to make various compression molding powders, plastics, and some insulating or corrosion-resistant coatings. Due to the non-degradability and good stability of phenolic resin, phenolic resin can be made into a variety of daily necessities or decorative products, which are widely used in people's lives.

The above is the phenolic resin introduced in this article, as well as its advantages and specific uses, I believe that people should have an understanding of phenolic resin, especially its use, after reading this article. If you want to know more about Da Yanguo, it is recommended that you find some products made of phenolic resin, and then understand and study the instructions of these products, especially the raw materials.

You can get it for free

The thermal stability of phenolic resin is good, but it needs to be heated and pressurized during curing, and there is by-product water in the reaction, so there are bubble residues, there are disadvantages of large shrinkage of curing volume, and poor alkali resistance.

Generally, bisphenol A epoxy resin can be cured at room temperature under normal pressure, with small volume shrinkage, acid and alkali resistance, but poor thermal stability.

The phenolic epoxy resin produced by epoxidation using linear phenolic as the polymer framework has both the high thermal stability of phenolic resin and the main reactivity of epoxy resin.

Therefore, it can be said that it is a phenolic resin modified by an epoxy group.

It is a variety of epoxy resin.

Phenolic resin is a material used in the manufacture of composite materials and plastic products. Here are some well-known manufacturers that use phenolic resins for your reference:1

Jindong Chemical Group ****2Kirin Chemical Group ****3American Standard Chemical****4

Shanghai Wanbang Chemical Materials****5Dalian Shenghui Chemical****6Beijing Changping Xinhao composite materials ****7

Shenyang Huayu Chemical Materials****8Anhui Xinyun Chemical **** Note, this is only a part of it, there are many other companies are also using phenolic resin for production, you can choose the right manufacturer according to your needs and actual situation. Due to the rapid changes in the industry, this information may be outdated, and it is recommended that you check and confirm it in real time during the use of phenolic resins.