Styrene-acrylic latex
Styrene-acrylic latex
CAS: 苯丙乳液
Molecular Formula: C11H12O2
Styrene-acrylic latex - Names and Identifiers
| Name | Styrene-acrylic latex |
| Synonyms | Styrene-acrylic latex |
| CAS | 苯丙乳液 |
Styrene-acrylic latex - Physico-chemical Properties
| Molecular Formula | C11H12O2 |
| Molar Mass | 176.212 |
| Storage Condition | 2-8℃ |
| Use | Used as high-grade interior and exterior wall coating resin base material, styrene-acrylic architectural coating preparation with adhesive, etc |
Styrene-acrylic latex - Physical and chemical properties]
milky white liquid with blue light. Solid content 40 ~ 50%, viscosity 80 ~ 2000mPa-s, monomer residue 0.5%, pH value 8~9. Styrene-acrylic emulsion has good adhesion, transparent film, water resistance, oil resistance, heat resistance and aging resistance.
styrene-acrylic emulsion is used as a paper adhesive, and can also be used in combination with starch, polyvinyl alcohol, sodium carboxymethyl cellulose and other adhesives. Storage in the warehouse of 5~30 degrees C, storage period of 1 years.
Last Update：2024-04-10 22:29:15
Styrene-acrylic latex - Product characteristics
The polymerization of a monomer dispersed in water by an emulsifier into an emulsion state is called emulsion polymerization. The conventional emulsion polymerization system mainly consists of four parts: monomer, water, water-soluble initiator and water-soluble emulsifier, and the formula for industrial application is much more complicated. Emulsion polymerization is often copolymerization, in addition to the main monomer, there may be second, third monomer.
Advantages of emulsion polymerization:
(1) Water as a medium, cheap and safe. LaTeX viscosity is low, conducive to stirring heat transfer, transport and continuous production;
(2) The polymerization rate is fast, and the molecular weight of the product is high, and the polymerization can be carried out at a lower temperature;
(3) is conducive to the direct use of latex and the production of environmentally friendly products, such as water emulsion paint, binders, paper, leather, fabric treatment agents and so on.
disadvantages of emulsion polymerization:
(1) when solid products are needed, the emulsion needs coagulation, washing, dehydration, drying and other processes, and the cost is higher;
(2) there are impurities such as emulsifier in the product, which is difficult to completely remove, and the electrical properties are damaged.
Last Update：2024-04-10 22:29:15
Styrene-acrylic latex - Classification
The acrylic emulsion system with hard monomer styrene, known as styrene-acrylate emulsion, is widely used in the fields of adhesives, papermaking sizing agents and coatings due to its high cost performance.
with the development of paper industry, styrene-acrylic emulsion in the paper industry and paper processing has become an indispensable industrial supplies, it is widely used in pulp additives, A paper Impregnating agent, a paper coating agent, and the like to improve the tensile strength, ring crush strength, water resistance, and the like of the paper. According to the different process and function, styrene-acrylic emulsion mainly has the following classification:
(1) silicone modified styrene-acrylic emulsion
silicone modified styrene-acrylic emulsion referred to as Silicon styrene-acrylic emulsion. Silicone has excellent resistance to high and low temperature, resistance to ultraviolet and infrared radiation, resistance to oxidative degradation and other properties, with silicone modified styrene-acrylic emulsion, can significantly improve its weather resistance, light retention, elasticity and durability, etc.
(2) organic fluorine modified styrene-acrylic emulsion
with organic fluorine polymer or fluorine modified organic polymer as the main film-forming material coating, has excellent weather resistance, durability, chemical resistance and corrosion resistance, wear resistance, insulation, non-attachment and pollution resistance and other properties, widely used in construction, aviation, electronics, electrical, mechanical and household commodities, wood furniture and other fields, is a collection of high, new, special in one of the excellent performance of the coating, in the coating industry occupies a very important position, enjoy the "coating King" reputation.
(3) epoxy resin modified styrene-acrylic emulsion
epoxy modified styrene-acrylic emulsion not only has the advantages of high strength, corrosion resistance and strong adhesion of epoxy resin, but also has the characteristics of weather resistance and good gloss of styrene-acrylic emulsion, good resistance to pollution and water resistance, there is a great value to promote.
(4) functional monomer modified styrene-acrylic emulsion
The research on further improving and perfecting the properties of styrene-acrylic emulsion is becoming more and more active, and the research on the functional monomer of the system is one of the hot spots. Comonomer composition can be generally divided into three parts, the first is the soft monomer (acrylate), the glass transition temperature is low, giving the polymer adhesive properties; The second is the hard monomer (styrene), the glass transition temperature is high, give the polymer cohesion; The third is the functional monomer, which can be copolymerized with soft and hard monomers to obtain a copolymer with functional groups, which can significantly improve the overall performance of the emulsion.
(5) cationic styrene-acrylic emulsion
The cationic styrene-acrylic emulsion refers to a polymer or a copolymer obtained by using a cationic surfactant or a positively charged acrylic system. The basic feature is that the polymer surface or the polymer itself is positively charged. Due to the positive charge of the cationic styrene-acrylic emulsion, it is not only beneficial to the neutralization, adsorption and adhesion of the negatively charged surface, but also has the effects of sterilization, dust prevention and antistatic.
Last Update：2024-04-10 22:29:15
Styrene-acrylic latex - Use
styrene-acrylic emulsion (styrene-acrylate emulsion) is prepared by emulsion copolymerization of styrene and acrylate monomers. Styrene-acrylic emulsion is one of the ten most important non-cross-linking emulsions in the world. As an important intermediate chemical product, styrene-acrylic emulsion has a very wide range of uses, which is mainly used as architectural coatings, metal surface latex coatings, floor coatings, paper adhesives, adhesives, etc. Styrene-acrylic emulsion has good adhesion, transparent film, water resistance, oil resistance, heat resistance and aging resistance. Styrene-acrylic emulsion used as paper adhesives, can also be used with starch, polyvinyl alcohol, sodium carboxymethyl cellulose and other adhesives
Last Update：2024-04-10 22:41:56
