53results about How to "Increase the strength of hydrogen bonds" patented technology

The invention relates to a method for producing a pasty mask through using a persimmon fruit vinegar film. The mask which adopts a novel raw material persimmon fruit vinegar as a nutrient and allows chitosan lactate, the persimmon fruit vinegar film, sodium alginate and carboxymethyl cellulose sodium to form a blend film improves their respective water retention property, increases the hydrogen bond action force and makes water loss difficulty, so the prepared pasty mask has a good water retention property, and can lock water on the surfaces of skins for a long time; and the full utilization of organic acids comprising lactic acid, acetic acid and the like in the invention can promote the expansion of capillary vessels, increase the skin blood circulation, kill some bacteria on the skins, whiten and nourish faces, and smoothen, brighten and clean skins. The method which allows weak-acidity vinegar treatment to be effectively applied to face skins has the advantages of simple technology and benefiting for the industrial enforcement.

The invention discloses a preparation method of a wet type moisturizing and dust-suppressing agent and belongs to the technical field of environmental protection. The preparation method disclosed by the invention has the beneficial effects that due to existence of double electric layers in modified zeolite powder, alpha-1, 4 glucosidic bond is hydrolyzed from the inner parts of starch molecules ina random mode by utilizing endonuclease of alpha-starch amylase, and soybean isolate protein contains more polar groups along the own peptide chain skeleton, so that wetting and absorption for dust in the air are improved; due to addition of ox bile, the wettability of the dust-suppressing agent can be improved, the surface tension of water can be reduced, the water can be prevented from condensing into droplets and the volatilization rate can be reduced; since oxidized dextrin swells after absorbing water, the filling capacity is also increased, and in addition, due to water-absorbing groupssuch as hydroxyl groups and the like exposed in the oxidized dextrin, the action force of the formed hydrogen bonds is stronger; calcium chloride doped in the oxidized dextrin can permeate into a spatial network structure of an oxidized-dextrin grafting product, and after the dust-suppressing agent falls to the ground, the calcium chloride absorbs carbon dioxide to form hard calcium carbonate, sothat diffusion of the dust can be controlled and the application prospect is wide.

The invention discloses a preparation method of aromatic tar-reducing cigarette paper, and belongs to the technical field of paper product preparations. The preparation method is characterized by thata softwood pulp is subjected to alkali cooking treatment to produce a delignified wood pulp; and a mixed gas of propylene and acetyl chloride is introduced into the wood pulp, and trans-3-pentene-2-dione is produced in the wood pulp under a catalytic action of aluminum chloride, so that an aroma-emitting wood pulp is obtained. According to the preparation method, a principle that a Fridel-Craftsreaction of an alkene with an acid halide yields a corresponding alpha,beta-unsaturated ketone is used, after lignin is removed from the wood pulp, burning of the cigarette paper will not produce a wood gas with a sour and astringent taste, and a scent will go into mouth, so that both of the taste and the odor of the cigarette paper are improved; and softwood fiber is long and soft, and has thin cell walls and large cell cavities, so that the softwood fiber is easy to fibrillate during a beating process, and fibers are combined tightly to each other, and after the delignification, the porosityof the fibers is improved, so that the amount of oxygen is increased when a cigarette is burned, thereby making tar fully burned, and achieving a purpose of reducing tar in the cigarettes, therefore,the aromatic tar-reducing cigarette paper has a wide application prospect.

The invention discloses a preparation method for waterproof starch adhesive for wood and belongs to the technical field of a high polymer material. The method comprises the following steps: mixing starch with yeast liquid, standing by and fermenting, and then freeze-drying, thereby acquiring degraded starch; mixing the degraded starch with water, and then adding a cross-linking agent and a catalyst, stirring and reacting and then freeze-drying and crushing, thereby acquiring the cross-linked starch; and mixing the cross-linked starch with water, adding nanometer silicon dioxide, ultrasonicallyoscillating, adding the organosilicone hydrolysate and the catalyst, stirring and reacting and then performing rotary evaporation concentration, thereby acquiring the waterproof starch adhesive for wood. The starch adhesive prepared according to the invention has excellent water resistance and higher adhesive strength.

The invention discloses a preparation method of a filter tip material, and belongs to the technical field of preparation of filter materials. Based on the principle that olefin and acid halide are subjected to a Friedel-Crafts reaction to generate corresponding [alpha],[beta]-unsaturated ketone, an aluminum chloride solution is dispersed in wood pulp, then mixed gas of propylene and acetyl chloride is introduced into the wood pulp to generate trans-3-pentene-2-ketone, which has a fruity flavor; and unsaturated ketones can react with hydroxyl groups in wood pulp fibers, so that the distance between the fibers and unsaturated ketone molecules is reduced, and the adsorption capacity of the filter tip material on wood offensive gas is enhanced. Roots and rhizomes of Platycodon grandiflorum andlicorice roots in the flavor enhancer can absorb nitrosamine gas in smoke and have the effects of relieving cough and reducing sputum. Sugar in corn flour and protein in egg white can be subjected toa Maillard reaction under a heating condition to generate aroma molecules. Agilawood powder can obviously cover cigarette offensive gas, so that the smoke is fine and mellow, and nitrosamine substances can be converted into nitrosamine salt to be adsorbed in the porous gel of the konjak. The product has a wide application prospect.

The invention discloses a rare earth plastic shell material. The rare earth plastic shell material is prepared from the following raw materials in parts by weight: 0.1 to 0.2 part of cerium oxide, 0.1 to 0.2 part of lanthanum citrate, 3 to 4 parts of carbon nanotubes, 40 to 50 parts of thionyl chloride, 3 to 5 parts of N,N-dimethylformamide, 100 to 120 parts of ethylenediamine, 16 to 20 parts of melamine, 36 to 40 parts of 35 to 37% formaldehyde aqueous solution, 170 to 200 parts of polyvinyl chloride, 20 to 30 parts of 75 to 80 wt% sulfuric acid, 30 to 40 parts of 95 to 98wt% nitric acid, 2 to 3 parts of sodium carboxymethylcellulose, 4 to 7 parts of anhydrous calcium chloride, 30 to 40 parts of attapulgite, 2 to 3 parts of dimethylethanolamine and 10 to 13 parts of octyl epoxy stearate. According to the rare earth plastic shell material, the cerium oxide and the lanthanum citrate are added, so that the surface strength of a finished plastic shell product can be effectively increased, and the weather resistance is increased.

The invention provides a method for preparing racemic cis-8-benzyl-2, 8-diazabicyclo [4, 3, 0] nonane. The method comprises the following steps of: step S1, preparing a platinum dehydrogenation catalyst; S2, catalyzing piperidine cyclic dehydrogenation reaction by adopting the platinum dehydrogenation catalyst; and S3, carrying out a catalytic hydrogenation reaction by using a chiral brominated acid catalyst. The method for preparing the racemic cis-8-benzyl-2, 8-diazabicyclo [4, 3, 0] nonane of the invention is high in raceme purity and high in reaction yield.

The invention discloses an antiaging transplanter plastic casing material which is prepared from the following raw materials in parts by weight: 1-2 parts of sodium sulfite, 3-4 parts of carbon nanotube, 40-50 parts of thionyl chloride, 3-5 parts of N,N-dimethylformamide, 100-120 parts of ethylenediamine, 16-20 parts of melamine, 36-40 parts of 35-37% formalin, 170-200 parts of polyvinyl chloride, 20-30 parts of 75-80 wt% sulfuric acid, 30-40 parts of 95-98 wt% nitric acid, 3-4 parts of polyphthalic diamide, 1-2 parts of 2-mercaptobenzimidazole, 0.6-1 part of N-isopropyl-N'-phenyl-p-phenylenediamine, 2-3 parts of diniconazole, 10-13 parts of polycarbamate and 30-40 parts of fluorite powder. The plastic casing has the advantages of high aging resistance, long service life, high weather resistance, high strong adaptability to the environment and excellent comprehensive properties.

The invention relates to the technical field of oil sludge treatment, and discloses an oil base mud and landing oil sand treatment device and technology. A first extraction kettle, a second extractionkettle, a mud cleaning deposition tank and a centrifugal dryer are included. A mixing assembly is arranged in the first extraction kettle and comprises a first feeding pipe, a second feeding pipe anda discharging pipe. The discharging pipe stretches into the first extraction kettle. A rotation rod is rotationally connected in the first extraction kettle. The end portion of the rotation rod is connected with a mixing piece mixing disc located above the discharging pipe. The oil base mud and landing oil sand treatment device and technology have the following advantages and effects that an extraction agent and a collaborative extraction agent are injected into a tank, the extraction effect is improved, the extraction agent and the collaborative extraction agent which upwards flow are scattered on the rotating mixing disc, the contact area with mud is increased, and the extraction effect is improved; and in addition, oil base mud is sequentially extracted through supercritical CO2 and supercritical n-butane or iso-butane, light oil and heavy oil in the oil base mud are extracted, and the oil content of the mud is reduced.

The invention belongs to the technical field of space leather bass, and particularly relates to an aqueous dispersion of polyurethane or polyurethane urea, a preparation method of the aqueous dispersion, a water-based space leather bass and a preparation method of the water-based space leather bass. Polyurethane or polyurethane polyurea contained in the aqueous dispersion is prepared from the following components: (a) dihydric alcohol and / or polyhydric alcohol; (b) diisocyanate and / or polyisocyanate; (c) a hydrophilic compound comprising ionic and / or latent ionic groups and comprising 2-3 NCO reactive functional groups; (d) a nonionic hydrophilic compound; (e) a cyclic compound reactive to isocyanates and comprising hydroxyl and amino functional groups; (f) a silane coupling agent comprising hydroxyl and amino functional groups; (g) a neutralizing agent; and (h) a small molecule compound containing an amino group. The obtained aqueous dispersion is high in flocculation speed, good in flocculation effect and good in storage stability. The obtained space leather base is high in peel strength and excellent in normal and low temperature flexure resistance and chemical resistance.

The invention discloses a flame retardant plastic shell material. The flame retardant plastic shell material is prepared from, by weight, 1-2 parts of fatty acid diethanol amide, 3-4 parts of carbon nano tubes, 40-50 parts of thionyl chloride, 3-5 parts of N-dimethyl formamide, 100-120 parts of ethylenediamine, 16-20 parts of melamine, 36-40 parts of a 35-37% formaldehyde solution, 170-200 parts of polyvinyl chloride, 20-30 parts of 75-80wt% sulfuric acid, 30-40 parts of 95-98wt% nitric acid, 30-40 parts of talcum powder, 10-13 parts of tributyl citrate, 3-4 parts of pentaerythritol, 4-6 parts of ammonium polyphosphate, 10-12 parts of polytetrafluoroethylene wax, 3-4 parts of allyl polyethylene glycol and 1-2 parts of ferrous sulfate. The talcum powder, the ammonium polyphosphate and the like are added into the flame retardant plastic shell material, the flame retardant performance of finished plastic is effectively improved, and the use safety is improved.