• 2021-01-27

Relying on its own innovation and development, SANYI has developed 12 series and more than 100 varieties of  resins with high quanlity, and expanded more and more extensive application fields. In 2020, COVID-19 was raging, Sanyi's annual output still reached 15000 tons, about 20000 cubic meters. Products classification 1. Strong acid cation exchange resin (SAC) 2. Weak acid cation exchange re...

• 2021-09-30

Chemical desalination refers to the process in which various ions contained in water are removed by ion exchange reaction with ion exchange resin, also known as ion exchange demineralized water treatment. When various cations in the water react with the cation exchange resin, the water contains only hydrogen ions exchanged from the cation resin; After various anions in water react with anion excha...

• 2022-02-15

Industrial water can be generally divided into the following six categories: （1）First grade softened water, hardness ＜0.02 mmol/L （2）Second grade softened water, hardness ＜0.0025 mmol/L （3）Alkali removal softened water, hardness ＜0.0025 mmol/L；degree of alkalinity，0.15 ~ 0.25 mmol/L （4）First grade demineralized water，conductivity ＜5 μS/cm，silicon dioxide ＜0.1 mg/L （5）Second grade demineralized wat...

• 2022-04-16

Because phenolic ion exchange resin, polystyrene ion exchange resin and polyacrylic acid ion exchange resin show many excellent properties, the synthesis technology of ion exchange resin has developed rapidly, and inorganic ion exchanger and natural ion exchanger have been gradually replaced by synthetic organic ion exchange resin. In addition to strong acidic and weak acidic cation exchange resin...

• 2022-05-16

Crosslinked polystyrene is the matrix for the synthesis of a variety of ion exchange resins. The benzene ring on its high molecular chain can carry out many substitution reactions like small molecular aromatic hydrocarbons, so as to introduce various ion exchange groups to make ion exchange resin with excellent performance. 1. Preparation of crosslinked polystyrene spheres （1）Styrene monomer The p...

• 2022-05-23

(3)Suspension Crosslinking Copolymerization method Suspension polymerization is a method for preparing spherical polymers. Copolymerization is one of the ways to prepare binary or ternary copolymers and improve the properties of polymers. Suspension Crosslinking Copolymerization is a unique polymerization reaction used to prepare ion exchange resin skeleton copolymers. Suspension polymerization is...

• 2022-06-21

In addition to conventional ion exchange resins, micron fine-grained ion exchange resins are also developing rapidly. This kind of resin is mainly used for chromatographic separation. Therefore, a sufficiently small particle size (100~400 mesh) and a relatively narrow particle size distribution are key technical indicators. Suspension polymerization can prepare spheres with diameters ranging from ...

• 2022-10-12

The aforementioned suspension crosslinking copolymerization is an important method for preparing polymers. The copolymerization is carried out in a dispersed small ball. In fact, this is a micro bulk polymerization, and the product is a gel type transparent sphere. If a certain amount of inert solvent or linear polymer (collectively referred to as porogen) is added to the comonomer, the porogen wi...

• 2022-10-13

As a result, the preparation of macroporous ion exchange resin copolymer spheres can be divided into the following types: (1) Suspension copolymerization of macroporous ion exchange resin with non good solvent as porogen: the method is to mix monomer, initiator and porogen together for suspension copolymerization. From a single sphere, this is a micro precipitation copolymerization reaction. At th...

• 2022-10-14

When the macroporous ion exchange resins is used as a porogen in a bad solvent, the properties, dosage and crosslinking degree of the porogen have significant effects on the pore structure of the copolymer. With the increase of the amount of divinylbenzene and pore forming agent, the phase separation appeared earlier and the gel point also appeared earlier. The separated macromolecular chains are ...

• 2022-10-15

(3) Suspension copolymerization with mixed solvent as pore forming agent: macroporous ion exchange resins prepared by suspension copolymerization with good solvent or bad solvent as pore forming agent differ greatly in pore structure and performance, which indicates that the properties of pore forming agent have a very significant impact on the pore structure of copolymer. This effect is mainly at...

• 2022-10-24

Anion exchange resins produced in industry are mostly made of styrene divinylbenzene copolymer spheres as the skeleton, and introduced quaternary ammonium groups or other amine groups through chloromethylation and amination. Its varieties and specifications are far more than those of cation exchange resin. Therefore, it is widely used and one of the main strains of ion exchange resin. The basic sy...