Background and overview[1]
Polystyrene (PS) microspheres are a widely used material for preparing photonic crystals. This is because polystyrene microspheres have a simple preparation method, good monodispersity, and controllable particle size; polystyrene The difference in physical and chemical properties with inorganic oxides makes it very easy to use it as a template to remove; polystyrene materials have good mechanical properties, which makes them useful in the preparation of modulated photonic crystals. Monodisperse nanoscale polystyrene acrylic copolymer has the advantages of regular morphology, uniform particle size, good surface reactivity and easy functionalization. It is also highly researched and applied in the fields of immunology technology and early diagnosis of diseases. value.
Apply[2-4]
Examples of applications of polystyrene acrylic copolymer are as follows:
1) Prepare a polystyrene acrylic copolymer microsphere. The polymer microspheres are: styrene monomer and acrylic acid monomer are prepared through soap-free emulsion polymerization to obtain polystyrene-acrylic latex particles. After the polystyrene-acrylic latex particles are dispersed into emulsion, they are further processed by silicone oil deposition method. Polystyrene-acrylic acid polymer microspheres were prepared. Compared with traditional polymer microspheres, the polystyrene-acrylic acid polymer microspheres prepared by the method of the present invention have uniform particle size, small particle size, large specific surface area, regular and orderly structure, strong adsorption, and aggregation effect. Due to its large size and strong surface reactivity, it has great application potential in biochemistry, analytical chemistry, immunomedicine and certain high-tech fields.
2) Prepare an anti-mold and formaldehyde-removing coating, which consists of polystyrene-acrylic acid copolymer or polyacrylic acid copolymer or polyvinyl acetate-acrylic acid copolymer, talc powder, additives, pigments, and anti-mold fungicides , adsorbent, water; the method includes the step of mixing antifungal agent and auxiliary agent; the step of mixing talcum powder, pigment and adsorbent; mixing polystyrene-acrylic acid copolymer or polyacrylic acid copolymer or polyvinyl acetate- steps of acrylic copolymer and water and mixing the former together. The coating prepared by the method of the invention can effectively resist mildew and has a long-lasting effect. At the same time, the coating has the function of removing formaldehyde.
3) Prepare an environmentally friendly paint, especially for surface decoration such as indoor walls, ceilings, and gypsum boards. The preparation process of environmentally friendly interior wall coatings with low odor, low VOC (volatile organic compounds), and low formaldehyde is as follows: first, add dispersant, wetting agent, defoaming agent, thickener, anti-mold and anti-mildew agent in sequence at low speed. Algae agent; add titanium dioxide, pH regulator, heavy calcium, calcined kaolin (washed kaolin), and talc powder in sequence at medium speed; disperse or sand grind at high speed to a fineness of <50 μm; finally add polystyrene in sequence at low speed -Acrylic acid copolymer, polyacrylic acid copolymer or polyacetic acid-ethylene-acrylic acid copolymer, film-forming aids, antifreeze, preservatives, defoaming agents, rheology agents and H2O; after passing the inspection, they are filtered and packaged into low-odor, low-density VOC, low free formaldehyde environmentally friendly interior wall coating.
4) Prepare a tough coating made of the following raw materials in parts by weight: 2.5-5 parts by weight of aliphatic polyurethane acrylic acid, 3.5-7 parts by polystyrene-acrylic acid copolymer, and 1.2-2.7 parts by rosin polymer parts, iron oxide red 0.8-2.4 parts, polyoxyethylene fatty amide 1.2-3.4 parts, polypropylene fiber 2.2-3.8 parts, 2,4-dimethyl-p-toluidine 3.5-4 parts, azobisisoheptanitrile 0.8- 1.6 parts and 1.2-2.3 parts of phenolic resin. The invention is flexible and can adapt to a certain degree of vibration and displacement of the building structure. It can form a homogeneous and waterproof sealing layer, which is seamless and integrated without forming stress points. It has good bonding strength and can be bonded with wood and metal. Materials, ceramic tiles, various stones, cement and other substrates all have good bonding properties, and can seal loose substrates, special-shaped parts and pre-cast joints.
Main reference materials
[1] CN201511021698.6 Polystyrene-acrylic acid polymer microsphere and preparation method thereof
[2] CN201310557784.3 Preparation method of anti-mold and formaldehyde-removing coating
[3] CN200710009927.1 An environmentally friendly coating
[4] CN201310580648.6 A kind of tough coating
