I Praefatio
Thickener est quaedam rheology additive, quod non solum tendet in coating et ne sagging durante constructione, sed etiam dotare de coating cum optimum mechanica proprietatibus et repono firmitatem. Thickener has the characteristics of small dosage, obvious thickening and convenient use, and is widely used in coatings, pharmaceuticals, printing and dyeing, cosmetics, food additives, oil recovery, papermaking, leather processing and other industries.
Thquillantes in olea et aqua, secundum systems secundum diversas usus systems, et maxime de tribulaners sunt hydrophilic polymer componit.
In praesens, ibi sunt multa genera sponsioni praesto in foro. Secundum compositionem et mechanism agendi, sunt maxime dividitur in quattuor genera: Thessionum, Cellulose, Polyacryte et consuetudine polyurethane.
II Ordo
Cellulosic Thickener
Cellulosic thestyeren habere diu history of usu et ibi sunt plures varietates, inter methyl Cellulose, carboxymethyl cellulosa, hydroxyethyl celluloseth, hydroxypropyl Methyl cellulosis, etc., qui solebat esse amet de tribulatione. Maxime communiter usus horum est hydroxyethyl Cellulose.
Crasso mechanism:
The thickening mechanism of the cellulose thickener is that the hydrophobic main chain and the surrounding water molecules are associated through hydrogen bonds, which increases the fluid volume of the polymer itself and reduces the space for free movement of the particles, thereby increasing the viscosity of the system. Viscositas potest augeri per entanglement de mucro vincula, ostendens excelsum viscositas ad stabilis et humilis tondendas et humilis viscositas ad altum tondendas. Quia ad stabilis vel humilis tondendas rates, cellulosa mocyculares vincula inordinatam statum faciens ratio altus viscosa Dum altum tondendas rates, moleculis disposita ordine parallela fluunt directionis et facile slide invicem ita ratio viscositas guttae.
Polyacrylic Thickener
Polyacrylic Acidum Thickener, etiam quae alkali tumor Thickener (ASE), quod plerumque est EMULSIO paratus a (Midia) acidum acidum ethyl acidum per quaedam polymeriza.
Generalis structuram de alkali, swellable Thickener est:
Crasso mechanism: quod crasso mechanism of polyacrylic acidum Thickener est quod Dissolvit Dissolvitur in aquis, et per idem-sexus electrostatic de carboxylate iones, in virga figura extenditur a viscositas ad aquam, ita augendae a viscositas aquae. Praeterea, etiam format a network structuram per bringging inter LATEX particulas et pigmentis, augendae ad viscositas ratio.
Associative Polyurethane Thickener
Polyurethane Thickener, referred to as Heur, est Hydrophobic coetus-modified et Ethoxytis Polyurethane aquam, solutum polymer, quod pertinet ad non-ionic consortio. Heur est composito ex tribus partes: Hydrophobic coetus, hydrophilic catenam et polyurethane coetus. Et Hydrophobic coetus ludit an Association partes et est decretorium factor in crasso, plerumque Oleyl, Octadigyl, Dodecylphen, NonyLPhenol stabilitate et viscosity stabilitatem potest providere chemical stabilitatem et viscosity stabilitatem potest providere eget sunt polyethes et viscosity stabilitatem, communiter usus est polyethes et viscosity stabilitate, communiter usus est polyethes et viscosity stabilitatem, communiter usus est polyethos et et polyoxyethylene et ejus derivationes. Molecular torquem Heur est extenditur a Polyurethane coetus, ut Ipdi, TDI et HMDI.
Crasso mechanism:
I) Et Hydrophobic finem Molecule Associates cum Hydrophobic structurae ut LATEX particulas, surfactants, et pigmenta ad formare tres dimensiva network structuram, quae est fons excelsum tondendas viscosity;
II) sicut surfactant, cum current concentration est altior quam discrimine micellel concentration, micelles formatae sunt, et medium tondendas viscosity (1-100s-I) est maxime dominatus;
III) et hydrophilic torquem moleculo agit in hydrogenii vinculum aqua moleculo ad consequi incredit.
Inorganicis Thickener
Inorganicis, maxime includit fed album ipsum Carbon Nigrum, Sodium Bentonite, organicum Bentonite, Diatomaceous Terra, Attapulgite, Molecular cribrum, et Silica Gel.
Crasso mechanism:
Hic taking organicum Bentonite exemplo, mechanism est quod sequitur:
Organicum Bentonite plerumque non est in forma primaria particulas, sed plerumque aggregatum multiplex. Primary particularum potest produci per processus of madefecissem, disperso et activation, formatam efficientem Thixotropic effectus.
In Suspendisse System et Suspendisse activator non solum praebet eget industria ad auxilium organicum Bentonite dispergere, sed etiam aqua continebat in eo migratum ad hydroxyl coetus in extremis in Bentonite fickes ad formam. Ecce per cameram aqua moleculis, innumerabiles Bentonite filates formare gel structuram et hydrocarbon vincula in fickke superficiem systematis et producere Thixotropic effectus per fortis solvit. Sub actu externi structuram destruitur et viscositas decrescit et externa redit ad originale. Viscositas et structuram.
III applicationem
Cellulosic Thickener Cellulosic Thickener habet princeps incrassatus efficientiam, praesertim in crasso aquae phase; Hoc est pauci restrictiones in coatings et late adhibetur; Non potest esse in lato phien. Tamen, illic es incommoda ut pauperum adtritio, magis splashing in cylindro coating, pauper stabilitatem, et susceptibilis ad microbial degradation. Quia non habet humilis viscositas sub magno tondendas et excelsum viscositas sub static et humilis tondendas, viscositas crescit celeriter post coating, quod potest ne sagens, sed in alia causa pauperes.
Polyacrylic Acidum Thickener Polyacrylic Acidum Thickener habet fortis incrassatus et adtritio proprietatibus boni biologicum stabilitatem, sed est sensitivo PH valorem et pauper aqua resistentia.
Associative structuram consuetudine Polyurethane Torrens destruitur sub actione tondebis vis et viscositas decrescit. Cum vi evanescit, viscositas potest restitui, quod potest impedire phaenomenon Sag in constructione processus. Et ejus viscositas recuperatio habet quaedam hysteresis, quae est conducere ad adtritio de coating film. Et relativum Missam (millia decem millia) de polyurethane est multo minus quam relativum Molecular Missam (centum millia ad millions) de prima duo genera thestiónibus, et non promovere splashing duas. Et princeps aqua Solubility of Cellulose Thickener erit afficit aqua resistentia de coating film, sed Polyurethane Thickener Molecule habet et hydrophilic et hydrophobic coetus, et hydrophobic coetus habet fortis affinitate cum matrice de coating film potest augendae cum aquis resistentia de coating film, potest augendae cum matrice de coating film potest augendae cum aquis resistentia de coating film potest augendae cum aquis resistentia de coating amet. Cum autem LATEX particulas participare in consociatione, ibi erit ultra flocculation, ita et coating film potest esse lenis et habere altum illud.
Inorganicis Thickener aqua-fundatur Bentonite Thickener habet commoda fortis crasso, bonum Thixotropy, amplis phale phanica accommodatio, et bona stabilitate. Sed quia Bentonite est inorganicis pulveris cum bono luce effusio, potest significantly reducere superficiem superficiem et coating film et agere sicut agente. Ideo cum per Bentonite in nitidum LATEX pingere, operam esse solvit ad moderantum dosis. Nanotechnology est intellexit Nanoscale of inorganicis particulas, et quoque dotled inonagante, cum aliqua nova proprietatibus.
Post tempus: Feb-22-2025