Common types, synthesis methods and cross-linking methods of acrylic resins

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acrylic resin is a resin made of acrylics and methyl acrylates and other ole monomer co-polymerization, through the selection of different resin structures, different formulations, production processes and solvent composition, can be synthesized into different types, different properties and different applications of acrylic resin, acrylic resin according to the structure and membrane structure differences can be divided into thermoplastic acrylic resin and thermoacetic acid resin.The main absorption peak of light with acrylic and methyl acrylic monochrysmogenes is outside the solar spectral range, so the acrylic paint has excellent light resistance and outdoor aging properties.thermoplastic acrylic resin does not occur further cross-linking in the process of film-forming, so its relative molecular weight is large, with good color preservation, water resistance chemical resistance, fast drying, easy construction, easy construction and rework, aluminum powder preparation whiteness, positioning is good. Thermoplastic acrylic resins are widely used in automobiles, electrical appliances, machinery, construction and other fields.thermal solid acrylic resin refers to the structure with a certain amount of official energy group, in the paint through and added to the amino resin, epoxy resin, polyurethane and other official energy group reaction to form a mesh structure, thermostatic resin is generally relatively low molecular weight. Thermo-solid acrylic coating has excellent plumpness, gloss, hardness, solvent resistance, weather resistance, in the high temperature baking unchanged color, not yellowing. The most important application is with amino resin to make ammonia-acrylic paint, currently used in automobiles, motorcycles, bicycles, rolled steel and other products are very widely used.can be classified according to the way of production can be divided into 1, emulsion polymerization is through monosome, trigger and its reaction solvent together reaction polymerization, the resin is generally a solid content of 50% of the resin solution! Is a resin containing about 50% solvent, its general reaction for benzene (toluene or xylene), esters (ethyl acetate, butyl acetate), generally single or mixed! Solid emulsion-type acrylic resin has solvent immutability! Generally depending on the choice of solvents and make the product performance is not the same! Generally have a certain color number! Glassing temperature is lower, because it is generally used without methyl acrylates to react down! Solid this type of resin can have a higher solid content, can reach 80%! But because the solvent is immutable, transportation is not convenient!2, suspended polymerization is a more complex production process, generally as a method for the production of solid resin! Solid acrylic resin, which is generally the use of methyl acrylic down reaction polymerization! Acrylics without methyl are generally with a certain amount of official energy! Its polymerization reaction in the reaction is not easy to control, easy to stick to the explosion pot! The general process is to put monobodies, triggers, additives into the reaction axe and then put into the distilled water reaction! Wash and dry after a certain time and temperature reaction! Filtering, etc!! The production control of its products is more strict! If in the middle of which link can not get a bit, its products will have a certain impact! Generally reflected in the color above and molecular weight differences!3, ontogenal polymerization is a high-efficiency production process! Generally put raw materials into a special plastic film! Then react into a lumpy shape, take out the crush, and then filter out, generally the method of producing solid acrylic resin its purity is the highest of all production methods! His product stability is also the best, but his shortcomings are also full! Acrylic resins polymerized from benzene are not soluble for solvents! Sometimes the same monolith is several times more difficult to dissolve than with suspended polymerization! And pigment dispersion is not as good as suspended polymerized acrylic resin!4, other polymerization method solvent method reaction, reaction by solvent together to do intermediary substances! After the reactor is good, then take off the solvent!Acrylic monomer (acrylates, ethyl acrylic, orthobute acrylates and methyl acrylates, methyl acrylates, etc.) as the basic components, interlinked into the network structure of insoluble acrylic polymers.thecross-linking method is divided into two types1,
reaction cross-linking type, the polymer in the official energy group has no cross-linking reaction capacity, must be added to at least 2 official groups of cross-linking groups (such as melamine resin, epoxy resin, pyrethrea resin and metal oxides, etc.) after the reaction and cross-curing, cross-linking groups can not be long-term storage, should be used in a timely manner;2,
self-interlinking type, polymer chain itself contains more than two kinds of reactive ability of the official energy group (hydroxy, carboxyl, alamide, hydroxymethyl, etc.), heated to a certain temperature (or at the same time add catalyst), the official energy group reacts with each other, complete cross-linking. This thermoo-solid acrylic resin is mainly used in fabrics, leather, paper handlers, industrial paints and architectural coatings.: Part of the content of this article from the network, we have indicated the source, copyright owned by the original author! If there is infringement or original do not want to be reproduced, please contact us to delete in time (email: 609052959@qq.com)!for more information, please pay attention to WeChat Public Number: Paint Mall/ Paint Raw Materials and EquipmentContribution Hotline: 0571-86195869Advertising Hotline: 18969103469