8 results about "Polyamide epoxy" patented technology

The application relates to the papermaking technical field, and particularly discloses a paper pulp papermaking reinforcing agent and a preparation method thereof, which comprises the following raw materials in parts by weight: polyamide epoxy chloropropane resin 10-20 parts, silicon dioxide 1-2 parts, polyvinyl alcohol 1-5 parts, crosslinking agent 0.1-1 part, deionized water 120-150 parts, modifier 0.5-2 parts, wherein the modifier contains fluorine elements, silicon elements and organic amine groups in a molecular structure, and the dry tensile property, the wet tensile property, the folding resistance, the flame resistance and the wet / dry tensile index ratio of the paper pulp reinforcing agent are improved, and the paper pulp papermaking reinforcing agent prepared by the application can be widely applied to paper strengthening and has a wide application prospect.

The invention discloses regenerated high-strength corrugating base paper, a preparation method thereof and a corrugated board for shoe boxes. The preparation method of the corrugating base paper comprises the steps that waste paper pulp is subjected to enzyme modification treatment and pulped, and then cationic starch, a polyamide epichlorohydrin wet strength agent, carboxylated cellulose nanocrystals and alkyl ketene dimer are added and mixed to obtain corrugated paper primary pulp; carrying out papermaking forming on the corrugated paper primary pulp, and carrying out squeezing dehydration and drying to obtain shaped paper; a reinforcing sizing material is applied to the surface of the sizing paper, and the sizing paper is dried and calendered to obtain corrugated base paper; the reinforced sizing material is prepared from 80 to 90 parts of a film-forming reinforcing agent, 3 to 5 parts of carboxylated reduced graphene oxide dispersion liquid, 1 to 2 parts of a carbodiimide cross-linking agent, 1 to 5 parts of a borate coupling agent and 5 to 8 parts of polydimethylsiloxane; the film-forming enhancer comprises a styrene-acrylic emulsion and a carboxylated styrene-butadiene emulsion, so that the obtained corrugating base paper has high strength and excellent moisture resistance, and is suitable for being made into a corrugated board for a shoebox.

The invention discloses a bamboo fiber paper-based material as well as a preparation method and application thereof, and belongs to the field of biomass chemical engineering technologies and environmental remediation. The preparation method comprises the following steps: grinding a bamboo pulp fiber suspension to obtain mechanically modified bamboo fibers, and adding water into absolutely dry bamboo pulp fibers to prepare a mechanically modified bamboo fiber suspension; the preparation method comprises the following steps: respectively dispersing and dissolving polyethyleneimine and glutaraldehyde in water to obtain a polyethyleneimine solution and a glutaraldehyde solution; mixing the bamboo fibers with a polyethyleneimine solution for reaction, adding a glutaraldehyde solution, continuously stirring, and washing to obtain chemically modified bamboo fibers; and defibering the chemically modified bamboo fibers, adding polyamide epichlorohydrin resin and cationic polyacrylamide, and carrying out papermaking and drying treatment to prepare the bamboo fiber paper-based material. The bamboo fiber paper-based material prepared by the method has super-efficient capturing capability on micro-nano plastics, the removal efficiency reaches 99%, the adsorption capacity reaches 250mg / g, the bamboo fiber paper-based material can be popularized and used on a large scale, and the removal cost is greatly reduced.

The application discloses a polyamide epoxy resin curing agent, a preparation method and application. The curing agent is prepared by reacting raw materials including the following components by weight: a) hydrophobic amine 1-40 parts; b) water-soluble amine 0-30 parts; c) carboxyl or ester group-containing compound 10-40 parts; d) epoxy group-containing polyether 5-40 parts; and e) epoxy group-containing resin / compound 0-40 parts. The application uses hydrophobic amine as a raw material, and adjusts the formula composition to obtain an epoxy resin curing agent with good water solubility. The curing agent has improved water resistance and corrosion resistance when applied to water-based paint based on reduced hydrophilic segments. Meanwhile, the epoxy resin curing agent shows a clear solution form before or after water dispersion, is more conducive to long-term stable storage without flocculation, and has better product application.

The method comprises the following steps: by taking aminopropionitrile rectified high-boiling oil generated in a working section of preparing aminopropionitrile from acrylonitrile during production of VB1 as a raw material, carrying out reduced pressure rectification or in-situ catalytic cracking reduced pressure reaction rectification to obtain a distillate with the mass percentage content of dicyanoethylamine greater than 97% at the yield of 75% or more relative to the mass of the aminopropionitrile rectified high-boiling oil; dissolving the distillate by using an organic solvent, and carrying out catalytic chemical reduction or catalytic hydrogenation under an alkaline condition and in the presence of a catalyst to obtain a reduced material containing dipropylenetriamine, and centrifuging or filtering to separate out the catalyst and insoluble substances; the preparation method comprises the following steps: preparing a raw material into an organic solvent, sequentially distilling to recover the organic solvent, rectifying under reduced pressure, collecting rectified fractions according to a relational expression t = 92.42 + 9.645 / (1.573-lgP) between a boiling point t (DEG C) of the material and a corresponding external pressure P (mmHg) to obtain dipropylenetriamine with the mass percentage of more than 97%, reacting dipropylenetriamine with sebacic acid to generate a polyamide prepolymer, reacting with epichlorohydrin, and obtaining the dipropylenetriamine with the mass percentage of more than 97%. The polyamide epoxy resin wet strength agent is obtained.

The invention belongs to the technical field of pressure-sensitive adhesives, and discloses a silicone rubber-based pressure-sensitive adhesive and a preparation method thereof. The invention relates to a fluorine-containing polyether modified hydroxyl-terminated polysiloxane adhesive, which is prepared from the following ingredients in parts by weight: 45 to 65 parts of fluorine-containing polyether modified hydroxyl-terminated polysiloxane, 3 to 6 parts of alkoxy silane-tributyl boron and titanate compound cross-linking agents, 6 to 12 parts of silane coupling agents KH-602 modified nano aluminum nitride, 12 to 25 parts of silicon resin-hydrogenated rosin glyceride-polyterpene resin ternary compound tackifiers and 0.2 to 1.2 parts of organic zirconium catalysts. 15-35 parts of an environment-friendly mixed solvent; 2-5 parts of a polyether amine-polyamide epoxy curing agent compound; the invention aims to overcome the defects that the existing silicone rubber-based pressure-sensitive adhesive is insufficient in temperature resistance, poor in bonding effect on base materials difficult to adhere, uneven in crosslinking, poor in filler dispersity, insufficient in key component disclosure and the like, and provides the silicone rubber-based pressure-sensitive adhesive which is innovative in component design, controllable in process and excellent in performance and the preparation method thereof.

The application relates to the technical field of industrial coatings, in particular to a salt-fog-resistant water-based industrial paint and a preparation method thereof. The salt-fog-resistant water-based industrial paint comprises components A and B with a mass ratio of (12-15):1. The component A comprises the following components: a cationic water-based epoxy resin, a water-based acrylic modified epoxy resin, a pH regulator, an amphoteric surfactant, mica powder, nano zinc oxide, a silane coupling agent, a polyether modified siloxane, a wet dispersant and deionized water. The component B comprises the following components: a polyamide epoxy curing agent, 2-ethyl-4-methyl imidazole, propylene glycol methyl ether acetate and deionized water. The cationic water-based epoxy resin and the water-based acrylic modified epoxy resin are compounded, the salt-fog resistance is maintained, the weather resistance is improved, and the salt-fog-resistant water-based industrial paint is suitable for rust prevention on a metal surface.

The application relates to a preparation method of high-performance high-flexibility formaldehyde-free impregnated film paper and application thereof, and belongs to the technical field of impregnated film paper. The application aims to solve the problems that the existing impregnated film paper cannot simultaneously have high strength, high toughness, crack resistance, scratch resistance, wear resistance and formaldehyde-free release, and the low adhesive transparency influences the paper texture. Preparation: 1, adjusting the pH of polyamide epoxy chloropropane resin; 2, preparing polyvinyl alcohol / melamine adhesive; 3, impregnating the decorative base paper in the polyamide epoxy chloropropane resin after the pH is adjusted, then drying to obtain primary impregnated paper, and then impregnating the primary impregnated paper in the polyvinyl alcohol / melamine adhesive at room temperature, and then drying to obtain high-performance high-flexibility formaldehyde-free impregnated film paper. Application: the high-performance high-flexibility formaldehyde-free impregnated film paper is used as a veneer material of artificial board.