Patent
Fluorine-free oil-proof agent and preparation method and application thereof
The application provides a fluorine-free oil-proof agent, a preparation method and application thereof, and belongs to the technical field of textile assistants. The fluorine-free oil-proof agent is prepared by reacting fluorine-free oleophobic monomers with hydrophobic silica aerogel particles, wherein the fluorine-free oleophobic monomers have umbrella-shaped liquid characteristics, and the hydrophobic silica aerogel particles have a three-dimensional porous network structure. The fluorine-free oil-proofing agent can endow fabrics with good oil-proofing effect.
Water repellant composition, water-repellent fiber product, and method for manufacturing water-repellent fiber product
This water repellant composition includes a non-fluorinated polymer (?) containing constituent units derived from a (meth)acrylic acid ester monomer (A1) represented by general formula (A-1) and constituent units derived from a compound (A2) represented by general formula (A-2), and a silicone resin (?). [In formula (A-1), R1 represents hydrogen or a methyl group, and R2 represents
Fluorine-free polyether sulfone as well as preparation method and application thereof
The invention discloses fluorine-free polyether sulfone, a preparation method and application thereof, and relates to the technical field of polyether sulfone. The technical proposal is as follows: mixing bisphenol compound with non-coplanar groups, bisphenol S, 4' -dichloro diphenyl sulfone, an acid binding agent, dimethylbenzene and an aprotic polar solvent, carrying out salt forming reaction at 160-170 ? under the protection of nitrogen, refluxing and separating water for 1-3h, distilling off dimethylbenzene, continuously heating to 190-230 ?, preserving heat for 4-8h, adding sulfolane to dilute a polymerization solution, cooling to 70-110 ?, adding epichlorohydrin for continuous reaction for 2-10h, filtering, crushing, washing with an alcohol aqueous solution, and drying to obtain fluorine-free polyether sulfone. The invention reduces the dielectric constant of the polyethersulfone under the condition of keeping the high heat resistance of the polyethersulfone, introduces epoxy alkyl into the end group of the polyethersulfone, and keeps the solubility of the polyethersulfone in a conventional solvent on the premise of further reducing the dielectric constant.
Fluorine-free flame-retardant PC material and preparation method thereof
The application relates to the field of polymer composite materials, in particular to a fluorine-free flame-retardant PC material and a preparation method thereof, wherein the fluorine-free flame-retardant PC material comprises the following raw materials in percentage by weight: 10-15% of silicon PC, 0.1-1% of anti-aging agent, 2-6% of fluorine-free flame retardant and the balance of PC; the fluorine-free flame retardant consists of at least three of polydiphenyloxy phosphazene, tetraphenyl bisphenol A diphosphate, polydimethylsiloxane and methacrylate-based phenyl polymer compound. When more than three of polydiphenyloxy phosphazene, tetraphenyl bisphenol A diphosphate, polydimethylsiloxane and methacrylate phenyl polymer compound are compounded, the synergistic effect is achieved, and silicon PC is matched, so that the PC material has better flame retardant property, light transmittance, ageing resistance and physical property.
Product Tag:
Flame Retardant Polymer
Industry Tag:
Material
Microstructure self-healing super-hydrophobic coating, preparation method and application
The invention belongs to the field of super-hydrophobic coatings, and particularly relates to a microstructure self-healing super-hydrophobic coating, a preparation method and application thereof. Calcining diatomite, adding the calcined diatomite into NaOH solution to obtain diatomite A, mixing the diatomite A with octadecylamine liqui
Fluorine-free binder for positive electrode of lithium ion battery, preparation method of fluorine-free binder, positive electrode of battery and battery
The application provides a fluorine-free binder for a lithium ion battery anode, a preparation method, a battery anode and a battery, wherein the fluorine-free binder for the lithium ion battery anode structurally comprises a cross-linked core and an oil-soluble shell, the cross-linked core is a spherical polymer with a cross-linked structure, the oil-soluble shell is a polymer shell layer polymerized in situ on the cross-linked core, and one end of a molecular chain segment of a shell layer polymer is bound on a central cross-linked core; the adhesive comprises the following raw material components in parts by mass: 25-75 parts of A1 monomer, 25-50 parts of A2 monomer, 7-15 parts of crosslinking monomer, 20-50 parts of B1 monomer, 50-100 parts of B2 monomer and 5-20 parts of functional monomer, the adhesive provided by the application can relieve the volume change of active substances in the charge and discharge process, maintain the structural integrity of an electrode, and avoid the excessive coating of the active substances and the conductive agent by the solution type adhesive, thereby reducing the contact resistance between particles, improving the performance and stability of the battery, and also provides a preparation method of the adhesive, a positive electrode sheet and the battery.
Fluorine-free flame-retardant PC/ABS regenerated material and preparation method thereof
The application relates to the field of regenerated plastic materials, and discloses a fluorine-free flame-retardant PC/ABS regenerated material and a preparation method thereof. The fluorine-free flame-retardant PC/ABS reclaimed material is prepared from the following raw materials in percentage by weight: 50-85% of modified PC/ABS reclaimed materials, 2.5-25% of reinforced resin, 3-15% of compatilizer, 4-9% of flame retardant, 0.2-4% of lubricant and 0.3-2% of antioxidant; the flame retardant consists of an organic phosphorus flame retardant and a phosphazene flame retardant; the modified PC/ABS reclaimed material is prepared from PC reclaimed material, ABS reclaimed material, styrene-epoxy group copolymer, pentaerythritol triallyl ether, silane coupling agent and rosin glyceride; the preparation method comprises the following steps: mixing raw materials, melting and extruding, cooling and granulating. The PC/ABS reclaimed material prepared by the application has good flame retardance, wave permeability, impact resistance and fatigue resistance, and is applied to communication equipment with high requirements such as 5G antenna shells and the like.
Mixed coating liquid, fluorine-free oil-proof barrier paper and preparation method thereof
The invention relates to the field of food packaging, in particular to a mixed coating liquid and fluorine-free oil-proof barrier paper and a preparation method thereof, wherein the mixed coating liquid is prepared by uniformly mixing the following raw materials in percentage by mass: and (3) a component A: 1-5% of silica gel; and the component B comprises the following components: 1-5% of methyl hydrogen siloxane/polysiloxane; and C, component: styrene 5-15%; and D, a component: 3-10% of acrylic acid; and E component: 5-20% of butyl acrylate; and F, component: 20-70% of water; the sum of the mass percentages of the components is 100 percent. Also provided is a fluorine-free oil-repellent barrier paper which is formed by coating a mixed coating liquid on at least 1 surface of a paper substrate. The proposal completely eliminates the use of fluoride, realizes green packaging product materials harmless to human bodies, and accords with the environmental protection and health concepts. Meanwhile, the special silicon nano modified substance mixed coating liquid achieves the oil-proof grade of 6 grade or more (12 grade at most) required by the market, so that the grease is effectively prevented from penetrating, and the outer surface of the package is kept clean.
Product Tag:
Oil Repellent Coating
Industry Tag:
Packaging
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