subject: Dripping Flocking Printing Fabric Products, Research And Development - Dripping Flocking, Printing - [print this page] Dripping Printing paste The composition of the
Dripping Printing Pulp and its essence is plasticized PVC paste, PVC paste resin is suspended in a liquid plasticizer in the fluid mixture. Polyvinyl chloride (PVC) paste resin by definition is mainly made of such resin paste the application form, people often referred to as the plasticized paste paste such as polyvinyl chloride paste resin production process is different in nature have also been differences, PVC production process are: emulsion, seed emulsion, micro-suspension, micro-suspension and mixing the seed law.
Emulsion PVC resin fine particles, its size between 0.2 ~ 2 m. It is mixed with the plasticizer which when suspended in the form similar to the mushy dispersion, so called emulsion resin paste as emulsifying resin or powder. Formosa Plastics Corporation PR415, PR1069, such as the United States GOOdRich121 or made in China chemical plant in Tianjin can use PVC grades for the P-415, P-440, P-445, 450,460,510,550,1069 were seeded emulsion paste resin. Shanghai Tianyuan Chemical Plant produced by seed emulsion PVC paste resin grades are P-440, 415,445,450,460,510,550,1069. Shenyang Chemical Plant trademark has PSH-10, 20,31, etc..
Currently, about 75% of PVC by the suspension system, so the resin is in the procurement of printing companies must clearly ask what method is used for production, because the PVC paste resin and the resin suspension is different, and once buy PVC resin paste suspension when the process is relatively complex, PVC paste resin of the most prominent feature: its secondary particles, the plasticizer can be "collapsed" reduced to a particle, can be made stable by plastic paste. The coarse particles of suspension PVC resin, plasticizer at room temperature conditions, and can not be mixed into a paste, paste process requires the use of red, red paste process is the process: first, a small amount of suspension PVC resin with a small amount of growth plasticizer mixture, then add a large number of pre-heated to a temperature of hot plasticizer, the plasticizer added quickly while stirring by thick paste. When cooled paste resin and other according to formula with added agent, stirring the paste into the required compound. Soft PVC plasticizer is in the greatest influence on the mechanical properties of plastic additives, resin molecules are very strong Fant Ward combined force, the role of plasticizer in this Power of so weakened, so that the activities of molecules with each other more easily, the nature of PVC finished mostly determined by the plasticizer, the plasticizer can be given different types of resins with different characteristics, whether it is "the Lord" or 'secondary' plasticizer mixed in different proportions, can be caused by the desired result. Therefore, the choice of plasticizer of PVC paste processing application is very important. Therefore, the formula may be simple plastic drop printing paste can be complicated.
Plastic drop printing paste of the preparation method The most convenient method of preparation
Are some examples: PVC paste resin, 50 ~ 60g Plasticizer (dioctyl phthalate) 40 ~ 50g
Preparation method: to weigh a good plasticizer solution into the container, starting mixer combined with powdered resin, while stirring, medium-speed stirring, to prevent high heat to make paste and stir for about 1 hour or so, because the plasticized agents when blended with PVC, PVC plasticizers will also wet latex, colloidal particles to penetrate slowly, so as to form a liquid mixture of good; if time is too short not to infiltrate plasticizer powder Internally, particles have not been opened, this time to the printing pattern difficult to reach the required height, Moreover, the poor spend slurry rheology, printing profile will be unclear. Will generally beating its pulp for 12 hours after printing out with better results.
