2023-09-11- readingsHydroxyethyl cellulose has the features of dispersing, emulsifying, suspending and stabilizing in polymerized or copolymerized elements like vinyl fabric chloride and styrene, and bring a protective colloid. The ensuing polycellulose substance features a uniform particle form which is reduce. Higher denseness, good fluidity and thermal stability. Examples of programs in this area are listed below:
1. Polymerize vinyl fabric chloride and h2o in the existence of hydroxyethyl cellulose as a safety colloid as well as a hydrogen peroxide initiator to obtain fine-grained polyvinyl chloride using a completely K value of 55, which can be along with dibutyl phthalate and dibutyl phthalate. After plasticization with barium laurate or cadmium and nonocanoic acid solution wax tart, the calendered video has excellent thermal stableness.
2. Vinyl fabric chloride at .04 to .25 % by weight, 1 to 99 percent h2o-soluble HEC and 1 to 99 percent methyl Suspensions polymerization is completed in the existence of a cellulose mixture as well as an initiator, and also the obtained polyvinyl chloride includes a filter particle size circulation, is easy to gel, along with the received clear movie has no "undefinedspecies of fish view".
3. Use hydroxyethyl cellulose having a viscosity of 10-ten thousand centipoise being a suspension stabilizer for vinyl fabric chloride polymerization or copolymerization. In the existence of an oils-soluble polymerization initiator, the producing polyvinyl chloride homopolymer or copolymer has excellent certain gravitational forces and fluidity. Its bulk denseness is .75g/ml and its angle of repose is 28°.
4. Revocation polymerization of vinyl chloride in hydroxyethyl cellulose and hydroxypropyl methylcellulose as merged revocation substances and then in the existence of peroxide initiator to put together improved porosity and very low "undefinedseafood eye" in addition to plasticization Polychlorocellulose vinyl resin that flows like beach sand following getting together with the representative. Its regular pore size is .429μ along with the inner pore volume level is .258cm3/g.
5. In the structure of 310 areas of monomer vinyl fabric chloride, 65 areas of vinyl acetate, and 750 parts of normal water, 1.5 aspects of hydroxyethyl cellulose is used being a safety colloid. In the existence of peroxide initiator and 37.5 areas of solvent acetone or butyl acetate, During copolymerization, if there is no acetone, the fluidity is 15s and also the volume occurrence is 560g/L.
6. Include a modest amount of hydroxyethyl cellulose for the monomer styrene and h2o for revocation polymerization to obtain a bead polymer using a produce in excess of 99undefinedPer cent.
7. Suspensions polymerize 4950kg of styrene in 3580kg water and 1.5kg of hydroxyethyl cellulose at 90°C in the actual existence of dibenzoyl peroxide, and so on., then include 12.7kg of hydroxyethylcellulose as well as heat to 135°C , following 2 hours, flat non-bead-designed polystyrene can be found, 86undefined% that can move BS10 mesh (1700μ) and 14undefinedPer cent can successfully pass BS22 mesh (700μ).
8. The monomer styrene cellulose goes through revocation polymerization in the presence of hydroxyethyl cellulose and an initiator to have non-bead-formed polystyrene, which happens to be particularly suited to shot molding.
9. Inside the polymerization of styrene, include a tiny amount of hydroxyethyl cellulose and vinyl acetate, etc., and perform suspension polymerization in the existence of a hydrogen peroxide initiator. The generate is far more than 96undefined%, and it can be used for extrusion. .
10. 70/80Percent styrene and twenty to thirty% acrylonitrile, .02undefinedPer cent .08undefinedPercent hydroxyethyl Cellulose and a small amount of epoxy resin are copolymerized in the presence of tert-butyl benzoyl hydrogen peroxide to get a bead-like polymer. This bead-like polymer can be used as impregnation and foaming. Make useful things.
