In the previous article, the editor talked to you about the classification of artificial stone. Among them, the editor also said that the production of unsaturated polyester polyester artificial marble is the most commonly used, and the topic is based on the synthesis process of polyester artificial marble.
Unsaturated polyester resin In the production process of artificial marble, the performance of the binder unsaturated polyester resin is particularly important. Artificial marble is a material made of an unsaturated polyester resin and finely ground filler (such as limestone powder or alumina trihydrate). The filler particles are uniformly dispersed in the continuous matrix of the resin, and the pigments are unevenly dispersed, resulting in a marble-like pattern. The resin used must meet the requirements of the artificial marble production process.
The synthesis process of unsaturated polyester resin The synthesis process of unsaturated polyester resin can basically be divided into 3 stages:
In the first stage, the polycondensation reaction of dicarboxylic acid and glycol is carried out to produce unsaturated long-chain polyester molecules.
In the second stage, the polycondensation product is diluted and dissolved in the unsaturated monomer to become a viscous liquid, which is the resin product. In order to prevent the resin from cross-linking and curing before use or during storage, a polymerization inhibitor must be added to the resin. The above two stages are generally completed continuously during the resin production process.
In the third stage, in the process of manufacturing various products, initiators and accelerators are added (sometimes the accelerator has been added by the resin manufacturer as a pre-accelerator), and mixed with various reinforcing materials, fillers, etc., according to a certain process Conditions, make the resin cross-linking and curing reaction, while forming into a certain specification, the third stage, in the process of manufacturing various products, add initiator and accelerator (sometimes the accelerator has been added by the resin manufacturer as a pre-accelerator) , And mixed with various reinforcing materials, fillers, etc., according to certain process conditions, the resin will undergo cross-linking and curing reaction, and at the same time, it will be shaped into a certain specification and form of product
Artificial quartz stone
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