Carboxylic styrene butadiene latex performance impact factors

carboxyl butyl benzene latex, main factors affecting the function of 1 carboxylic styrene butadiene latex yield process is a process of emulsion polymerization, latex emulsion polymer is very complicated, there are many kinds of monomers, including conditioning agent, surface active agent, agent caused a total of more than 10 kinds. Butyl benzene latex function in addition to the influence of polymerization conditions, the share of styrene and butadiene also has a great influence to it. When styrene content increased, latex plastic increase, increase hardness, high pressure and temperature during calender, it can develop high gloss and smooth degree, film-forming function good paper, but the coating adhesion and stability. 1. 1 carboxylic has strong activity, with latex carboxyl degree progress, coated paper shear viscosity and water retention has been progress, but at high shear force under the action of coating shows the characteristics of shear thinning, it would be very suitable for high speed blade coating. To bring in carboxyl butyl benzene latex of nitrile, amide, ester monomer of monomer or increase the containing carboxyl groups, such as to improve the function of the latex. 1. 2 high glass transition temperature, the carboxyl butyl benzene latex film is relatively hard. Glass transition temperature of polymer had a great influence on its flexibility, made of low glass transition temperature of latex paint, can progress buffer of coated paper, paper has outstanding optimum printing function.

1。 The crosslinking density of 3 carboxyl butyl benzene latex Gel is affected by the pH value, Gel value is high, the coated paper to print gloss and high dry hair strength, but its resistance to foaming ( Vacuum packing) Wet hair with intensity variation.

2 use special emulsifier, some patents with molecular weight 5000 ~ 10000 of emulsion, can clear progress of water-borne latex binder, cut the coagulum content and progress of coating lubrication function.

2。 1 carboxylic styrene butadiene latex particle size is small, means that the latex own needs more emulsifier to settle. A relatively large particle size, high gloss paper, coated paper, vacuum packaging function is good, bonding strength is lower. Manipulation of the latex particle size range and particle size of scattered, size range and size distribution also affects the finished paper generalized functions. 2. The use of 2 carboxylic styrene butadiene latex for paper and two effects on the quality of products. 3 wet part, main is to improve the tensile strength of paper and board, tear strength, water resistance, oil resistance, softness and so on. 3 after the paper or paperboard forming on the surface sizing machine, advances its physical function and optimum printing function, etc. 3. 1 carboxylic styrene butadiene latex as machine inside or outside, of paper or paperboard coating adhesive, in order to progress the strength of the coating, paper gloss and print gloss, comfortable sex, and made of paper or cardboard has wear-resisting, bending resistance, water resistance, oil resistance, and other functions. 3. 2 impregnation, such as some special industrial paper products, after dipping in latex and get some special requirements by the function. 3. For carboxylic styrene butadiene latex emulsion polymerization system is complex, many influence factors, in the practice production, demand on the basis of site specific environment, the types, quality request, produce of coated paper coating machine type, drying and curing conditions, and many other aspects, in many internship summarizes various characteristic of latex, complement each other, and choose the most economic and suitable types of latex. Along with the high speed printing industry the paper put forward a higher request, and must be in want to rely on coating latex further progress to meet the market request.