38results about How to "Emulsification process is simple" patented technology

The invention relates to the field of sizing agents in the papermaking industry, in particular to alkenyl succinic anhydride sizing agent emulsion, which comprises white mud waste residue, alkenyl succinic anhydride and water, wherein a mass ratio of the alkenyl succinic anhydride to the water is 1:(1-4), and a mass ratio of the white mud waste residue to the alkenyl succinic anhydride is 1:(20-1,000). The preparation method comprises the following steps of: dispersing the white mud waste residue into the alkenyl succinic anhydride, adding the water, and mixing uniformly; or dispersing the white mud waste residue into the water, and uniformly mixing with the alkenyl succinic anhydride to prepare the stable oil-in-water (O / W) alkenyl succinic anhydride (ASA) emulsion. The industrial waste residue is recycled, and virtuous economic cycle is realized; the white mud serving as an emulsifier is lower in consumption compared with an inorganic nano-material serving as an emulsifier; under the condition of low consumption of the emulsifier, a good sizing effect can be achieved, so that the emulsification cost is lower; the alkenyl succinic anhydride sizing agent emulsion has the advantages of simple emulsification process and high concentration of the prepared emulsion; and after the alkenyl succinic anhydride sizing agent emulsion is diluted with water and added into a paper stock for sizing in pulp, and the sizing efficiency is high.

The invention discloses a preparation method of hyper-branched polyether amide block silicone. The preparation method comprises the following steps: preparing polyether / epoxy block silicone oil and preparing hyper-branched polyether amide block silicone. According to the preparation method, hyper-branched polymers and linear polyether amino block silicone are combined together to develop a new silicone softening agent with a newly modified silicone chemical structure; the synthesized hyper-branched material has a reticular structure which not only strengthens cohesive force between fibers, but also strengthens cohesive force between yarns; the invention is high in molecular weight, low in viscosity, rich in hydrophilic groups and capable of endowing soft, well-rounded and washable touch on fabrics; the problem of easy demulsification of traditional amino-modified silicone oil is solved; the product has self-emulsifying performance in water and is good in emulsion stability; the hyper-branched polyether amide block silicone is reduced in yellowing performance and enhanced in hydrophilicity; fabrics made accordingly has good hydrophilicity and low yellowing performance; and the hyper-branched polyether amide block silicone combines with the fabrics in a form of chemical bonds, so that the wash resistances is enhanced and the soft effect of amino silicone oil is achieved.

The invention discloses a preparation method of hyperbranched ternary polymerization organic silicon. The preparation method comprises the following steps: preparing allyl polyoxyethylene glycidyl ether; preparing epoxy-terminated polyether block siloxane; preparing polyether / epoxy block silicone oil; preparing hyperbranched ternary polymerization organic silicon. According to the preparation method, a hyperbranched polymer and linear polyether amino block organic silicon are bonded together to research a novel organic silicon softener with a novel modified organic silicon chemical structure, and a synthesized hyperbranched matter is capable of enhancing the cohesive force among fibers and endowing a fabric with soft, plump and washable hand feel, high in molecular mass and low in viscosity and has much hydrophilic groups; the problem that emulsion of traditional amino modified silicon oil is easily broken is solved, the product has self-emulsifying property in water and is good in emulsion stability; the yellowing property is reduced, and the hydrophily is enhanced; a processed fabric is good in hydrophily and low in yellowing property and is bonded with fabric by virtue of chemical bonds, so that the washability is improved, and the fabric has a flexible effect of amino silicon oil.

Disclosed are a silicone surfactant, and a preparation method and the use thereof. The silicone surfactant has a structure as shown in formula (I), wherein c is not 0; a, b, c are all integers and 10< a + b + c < 200; m = 0-40; n = 0-30; x = 3-30; x,m,and n are all integers, and m and n are not both 0; R is a C6 - 20 linear or branched long-chain alkyl, or an alkyl phenyl; and R' is H, CH3, C2H5, C3H7, or C4H9. The silicone surfactant has a novel structure, and an excellent emulsifying ability. The silicone surfactant has a good emulsifying ability for polydimethyl siloxanes and a variety of modified polydimethyl siloxanes in a very wide viscosity range. A good emulsifying effect can be achieved using the surfactant alone without formulating with other emulsifiers, and the emulsifying process thereof is simple and convenient to use without needing any homogenizer or any other special emulsifying process, in order to obtain a stable O / W type silicone oil emulsion.

The invention belongs to the technical field of papermaking, and discloses a papermaking surface sizing agent emulsified by magnetic composite particles and a preparation method thereof. The preparation method is as follows: (1) dispersing ferric ferric oxide nanometer solid particles coated with silicon dioxide in In water, stir evenly to obtain a suspension, adjust the pH value of the suspension to obtain a suspension of magnetic complex particles; (2) Add the alkyl ketene dimer to the reaction kettle, then add polyvinyl alcohol, and heat up to make the additive into a liquid state, insulated and stirred to obtain the modified alkyl ketene dimer sizing oil; (3) heating the magnetic composite particle suspension in a water bath, then adding the modified alkyl ketene dimer sizing oil, After mixing, heat-preserve and emulsify to obtain the papermaking surface sizing agent emulsified by the magnetic composite particles. The paper-making surface sizing agent emulsion is stable, has high sizing efficiency, and can endow paper with water resistance and magnetism; the method does not need to add surfactants, uses less emulsifiers, is low in cost, low in pollution and short in curing time.

The invention provides a method for preparing Pickering emulsion type alkenyl succinic anhydrides (ASA) papermaking sizing agent. The method comprises the following steps of: intercalating quaternary ammonium salt into nano cation-based modified montmorillonite to prepare nano solid fine grain emulsifier; dispersing the nano solid fine grain emulsifier and magnesium salt into deionized water to form a water phase, mixing the water phase and oil phase ASA, and emulsifying the mixture through high speed shearing to obtain the Pickering emulsion type ASA papermaking sizing agent, wherein the volume ratio of the oil phase to the water phase is (1:1)-(1:6). The Pickering emulsion type ASA papermaking sizing agent is coupled with the emulsion and stabilization characteristics of organic surfaceactive substances and inorganic solid fine grains; compared with the emulsion which is emulsified and stabilized by independently using the surface active substances, the Pickering emulsion type ASA papermaking sizing agent is more stable and higher in sizing efficiency; furthermore, the preparation process is simple, and the ASA can be emulsified into stable emulsion without adding any surfactant and high-molecule polyelectrolyte; and the using amount of the emulsifier is small and the emulsifying cost is low.

The invention discloses a preparation method of a solid particle emulsified and stabilized papermaking sizing agent. The method includes: dispersing nano-bentonite solid particles with a single particle diameter of 25nm-800nm in deionized water, and stirring them evenly to obtain a suspension solution; heating solid paraffin to a liquid oil phase, then mixing it with alkenyl succinic anhydride, and stirring them evenly at 65DEG C-90DEG C, thus obtaining a mixed sizing oil fluid; mixing the sizing oil fluid with the suspension solution according to a volume ratio of 1:7-3:1, and emulsifying the mixture so as to obtain a solid particle emulsified and stabilized papermaking sizing agent emulsion. The papermaking sizing agent emulsion has higher sizing efficiency. Also, the preparation process involved in the invention is simple, and the alkenyl succinic anhydride can be emulsified into a stable emulsion without adding any surfactant and high polymer polyelectrolyte. The emulsifying agent dosage is small, the emulsification cost is low, and environmental pollution is little.

The invention discloses a waterborne polyurethane adhesive which comprises the following compositions in mass portion: 100 portions of waterborne polyurethane dispersoid, 0.08 to 0.25 portion of thickener, 0.08 to 0.25 portion of flatting agent, 0.02 to 0.05 portion of antifoaming agent and 0.02 to 0.05 portion of antioxidant. The invention also discloses a method for preparing the adhesive. The preparation method is to drip multi-amine compound into the waterborne polyurethane dispersoid, to react for 15 to 30 minutes at a temperature of between 10 and 25 DEG C, to remove organic solvent in the waterborne polyurethane dispersoid, to add the thickener, the flatting agent, the antifoaming agent and the antioxidant again, to uniformly mix the materials, and then to obtain the waterborne polyurethane adhesive. The preparation method disclosed by the invention has a simple technology, and the waterborne polyurethane adhesive prepared has the characteristics of high solid content, quick drying speed, large bonding strength, large tensile strength, good elasticity, and superior water resistance, solvent resistance and high and low temperature resistance.

The invention relates to a sizing agent in the technical field of papermaking, in particular to stable alkenyl succinic anhydride sizing emulsion for papermaking. The stable alkenyl succinic anhydride sizing emulsion for papermaking comprises deionized water, alkenyl succinic anhydride, hectorite and alanine, wherein a mass ratio of the alkenyl succinic anhydride to the water is 1:(1-5); a mass ratio of the hectorite to the alkenyl succinic anhydride is 1:(20-200); and a mass ratio of the alanine to the hectorite is 1:(20-200). A preparation method is characterized by comprising the following steps of: dispersing the hectorite in the deionized water to obtain a hectorite colloid; adding an aqueous solution of alanine into the hectorite colloid; regulating pH, and uniformly mixing with the alkenyl succinic anhydride (ASA) to obtain the stable alkenyl succinic anhydride sizing emulsion for papermaking. The using amount of an emulsifier is small, and the emulsification cost is low; and the prepared emulsion has high concentration, stability and sizing efficiency. An emulsification process is simple, and the sizing efficiency of the obtained emulsion can be greatly improved.

The invention discloses a preparation method and a product of a fabric waterproof and darkening finishing agent, including the preparation of p-acryloyloxybenzoic acid; the preparation of tridefluorooctyl p-hydroxybenzoate; 2-(perfluorohexyl) Preparation of ethyl-4-[4-(acryloyloxy)-benzoyloxy]benzoate; preparation of fluorine-containing alkyl modified amino silicone oil; preparation of fluorine-containing alkyl modified amino silicone oil emulsion . In the molecular structure of the fabric waterproof and darkening finishing agent of the present invention, 2-(perfluorohexyl) ethyl-4-[4-(acryloyloxy)-benzoyloxy] benzoate is used as the fluorine-containing functional unit The body, which connects two rigid benzene rings through an ester group, and uses it as a linking group to bond an environmentally friendly short fluorocarbon chain to the amino silicone oil molecule, and uses the liquid crystal effect of the biphenyl group to promote short fluorocarbon chains. Regularly arranged outward and perpendicular to the surface of the substrate, it provides a more significant and effective fluoroalkyl shielding effect, resulting in an excellent waterproof and deepening effect.

The invention discloses a method for preparing a magnetism papermaking sizing agent stabilized by magnetism solid particle emulsification. The method comprises the steps of adding magnetism nanometer solid particles in the particle diameter of 18nm to 50nm into deionized water, carrying out ultrasonic dispersion, adding absolute ethyl alcohol, then adding a silane coupling agent, stirring, standing the solution, cooling the solution to room temperature, obtaining magnetism nanometer solid particles modified by the silane coupling agent, then dispersing the magnetism nanometer solid particles into deionized water, mixing the solution with alkenyl succinic anhydride oil liquid, carrying out high-speed shearing emulsification, and obtaining the magnetism papermaking sizing agent stabilized by the magnetism solid particle emulsification. The magnetism papermaking sizing agent with the stable magnetism solid particle emulsification prepared by the method allows a paper sheet to have water resistance, meanwhile has magnetism, and is high in sizing efficiency, simple in preparation, capable of allowing alkenyl succinic anhydride to be emulsified into Pickering type emulsion with quite high stability without addition of any superficial active agent, little in emulsion emulsifier dosage, high in stability and low in foam, toxicity and cost.