157results about "Polysaccharide adhesives" patented technology

A rotary engine that generates electricity using differences in relative humidity. A water-responsive material expands and contracts as water evaporates which drives the rotation of two wheels. The rotary motion drives an electrical generator which produces electricity. In another embodiment, the water-responsive material is used to actuate an artificial muscle of a robotic device.

The invention belongs to the field of binders, and particularly relates to a flame-retardant binder as well as a preparation method and application thereof. The preparation method of the flame-retardant binder comprises the following steps: uniformly stirring and mixing a biomass raw material and a solvent to obtain a biomass solution; uniformly stirring and mixing a cross-linking agent and the biomass solution to obtain a precursor solution with the solid content of 5-50wt%; and adjusting the pH value of the precursor solution to 3-5 to prepare the flame-retardant binder. According to the invention, the biomass raw material and the cross-linking agent are taken as raw materials, the construction of a cross-linked network is realized by taking pH as driving force, and the bio-based adhesive with the advantages of high adhesive property, high flame retardant property, recoverability, environment friendliness and the like is prepared by controlling the solid content of a precursor solution and the pH of a system; the method can be applied to preparation of products such as a multilayer plate composite material, a particle plate composite material, a coating composite material and a flame-retardant film, and has wide practical application.

An Australian eucalyptus composite board and a preparation method therefor. Australian eucalyptus wood is used as a raw material, a surface layer material is pretreated, and meanwhile, a specific adhesive is applied to the surface layer material and a core layer material, so that a force can be uniformly distributed on the prepared surface layer structure and core layer structure, the comprehensive performance is obviously improved, the static bending strength of the product can be up to 25 MPa, the screw holding capability of the board surface and the board edge reaches 1200 N or above, moreover, the lowest formaldehyde emission amount of the product is only 0.06 mg / L, and the 24-hour absorption expansion rate is less than 3%.

The invention provides a negative electrode binder composition, a negative electrode plate and a secondary battery, aiming at the problem that an existing negative electrode binder cannot effectively inhibit volume expansion of a silicon negative electrode. The negative electrode binder composition comprises a polysaccharide compound, a compound containing a linear rigid chain and metal cations complexed with the polysaccharide compound, and the mass ratio of the polysaccharide compound to the compound containing the linear rigid chain to the metal cations is (0.5-10): (10-40): (0.02-0.5); the polysaccharide compound and the compound containing the linear rigid chain both contain carboxyl groups, the pH value of the negative electrode binder composition is 5-8, and at least parts of the carboxyl groups in the polysaccharide compound and the carboxyl groups in the compound containing the linear rigid chain are complexed with metal cations. According to the negative electrode binder composition provided by the invention, the polysaccharide compound and the compound containing the linear rigid chain form a self-recovery network structure, so that crushing of negative electrode material particles is effectively prevented, and a material interface is stabilized.

The present application belongs to the technical field of electrode paste. The present application provides a bio-based binder. The present application also provides a preparation method of the bio-based binder. The present application further provides an electrode paste based on the bio-based binder, which comprises 80-90 parts by mass of aggregate, 10-20 parts by mass of the bio-based binder, and 0.7-1.2 parts by mass of attapulgite. The bio-based binder comprises alcohol with a purity of 55-65%, vegetable pitch, syrup, and starch, and the mass ratio of the alcohol, the vegetable pitch, the syrup, and the starch is (20-25):(150-170):(70-85):(90-110). The present application also provides a preparation method of the electrode paste based on the bio-based binder. The prepared binder is environmentally friendly and has good uniformity. Meanwhile, the cold ramming paste prepared according to the preparation method of the cold ramming paste has high mechanical strength and low porosity.

The invention provides a negative electrode binder composition, a negative electrode plate and a secondary battery, aiming at the problem that an existing negative electrode binder cannot effectively inhibit volume expansion of a silicon negative electrode. The negative electrode binder composition comprises a polysaccharide compound, a compound containing a linear rigid chain and metal cations complexed with the polysaccharide compound, and the mass ratio of the polysaccharide compound to the compound containing the linear rigid chain to the metal cations is (0.5-10): (10-40): (0.02-0.5); the polysaccharide compound and the compound containing the linear rigid chain both contain carboxyl groups, the pH value of the negative electrode binder composition is 5-8, the carboxyl groups in the polysaccharide compound and the carboxyl groups in the compound containing the linear rigid chain are at least partially complexed with metal cations, and the polysaccharide compound complexed with the metal cations forms a double helix structure. According to the negative electrode binder composition disclosed by the invention, the polysaccharide compound and the compound containing the linear rigid chain form a self-recovery network structure, so that crushing of negative electrode material particles is effectively prevented, and a material interface is stabilized.

The invention relates to a preparation method of a high-conductivity lithium composite aqueous binder for a high-voltage positive electrode material, which comprises the following steps: adding carrageenan into deionized water, uniformly mixing, adding sodium carboxymethyl cellulose, and stirring and mixing at room temperature for 24 hours to prepare a carrageenan-sodium carboxymethyl cellulose solution; and adding a pyrrole monomer into the carrageenan-sodium carboxymethyl cellulose solution, stirring and mixing for 5 minutes at room temperature, adding an initiator, stirring overnight at room temperature, and polymerizing to obtain the high-conductivity lithium-conductivity composite aqueous composite binder. According to the binder prepared by the invention, the conductivity and lithium conduction performance of the binder are bidirectionally improved, multi-electron transfer of an active material is excited, and the lithium ion transport stability is improved, so that the first-circle coulombic efficiency and long cycle performance of an electrode are improved.

The present invention provides a pressure-sensitive adhesive composition suitable for forming a pressure-sensitive adhesive sheet having a smooth surface. The pressure-sensitive adhesive composition of the present invention includes a β-1,3-glucan derivative G. The pressure-sensitive adhesive composition has a tan δ of 0.7 or more at 200° C. as determined by the following test. Test: a disc-shaped evaluation sample is produced from a pressure-sensitive adhesive composition. The evaluation sample is subjected to a dynamic viscoelasticity measurement to determine a tan δ thereof at 200° C.

The present invention provides a pressure-sensitive adhesive composition suitable for producing a pressure-sensitive adhesive sheet having a low glass transition temperature. The pressure-sensitive adhesive composition according to the present invention includes a β-1,3-glucan derivative G. The β-1,3-glucan derivative G has an acyl group a having a carbon number of 8 or more and an acyl group b having a carbon number different from the carbon number of the acyl group a, and the carbon number of the acyl group b is 8 or more. A pressure-sensitive adhesive sheet 1 according to the present invention is formed from the pressure-sensitive adhesive composition. A laminate 10 according to the present invention includes the pressure-sensitive adhesive sheet 1 and a substrate sheet 2.

The present invention provides a novel pressure-sensitive adhesive composition including a glucan derivative. The pressure-sensitive adhesive composition of the present invention includes a glucan derivative G having a glucoside bond A, and a glucoside bond B having a different bonding form from the glucoside bond A. The glucoside bond A is, for example, a 1,6-glucoside bond. A pressure-sensitive adhesive sheet 1 of the present invention is formed from the pressure-sensitive adhesive composition. A laminate 10 of the present invention includes the pressure-sensitive adhesive sheet 1 and a substrate sheet 2.

The invention belongs to the technical field of electrode paste. The invention provides a bio-based binder. The invention also provides a preparation method of the bio-based binder. The invention also provides an electrode paste based on the bio-based binder. The electrode paste comprises 80-90 parts by mass of aggregate, 10-20 parts by mass of the bio-based binder and 0.7-1.2 parts by mass of attapulgite, wherein the bio-based binder comprises alcohol with the purity of 55%-65%, vegetable pitch, syrup and starch, and the mass ratio of the alcohol to the vegetable pitch to the syrup to the starch is (20-25): (150-170): (70-85): (90-110). The invention further provides a preparation method of the electrode paste based on the bio-based binder, the prepared binder is environmentally friendly and good in uniformity, and meanwhile the cold ramming paste prepared according to the preparation method of the cold ramming paste is high in mechanical strength and low in porosity.

The present invention provides a production method for a β-1,3-glucan derivative, which is suitable for reducing a load on the environment. A production method for a β-1,3-glucan derivative according to present invention includes performing an esterification reaction of β-1,3-glucan at a temperature of 40° C. to 120° C. in the presence of an acid catalyst. In the production method for a β-1,3-glucan derivative, for example, the esterification reaction is performed by bringing the β-1,3-glucan into contact with acid anhydride.

The invention relates to a preparation method of a functional natural polysaccharide adhesive, which comprises the following steps: fermenting dried orange peel by using poria cocos zymophyte powder, extracting mixed polysaccharide, and cutting the mixed polysaccharide into large, medium and small molecular weight base materials through an ultrafiltration membrane; then poria cocos zymophyte powder is used for fermenting folium cortex eucommiae, raspberry tea powder is added for combined extraction of genipin and dihydromyricetin, the combined extract can improve the mechanical performance, antibacterial performance and the like of the polysaccharide adhesive, the flexibility of the polysaccharide adhesive is improved, and the brittleness of the polysaccharide adhesive is reduced; and fully mixing the polysaccharide base material with the combined extract of genipin and dihydromyricetin to prepare the functional natural polysaccharide adhesive. The functional natural polysaccharide adhesive is good in adhesive property and stability, has biocompatibility and biodegradability, is green, environment-friendly, non-toxic and harmless, further has multiple biological activity functions such as tumor resistance, oxidation resistance, inflammation resistance, bacterium resistance and immunity improvement, and can be widely applied to multiple fields such as food, cosmetics and medicine.

The disclosure generally relates to poly alpha-1,3-glucan compositions and articles containing them. In particular interest is comprising poly alpha-1,3-glucan ester derivatives. The poly alpha-1,3-glucan derivatives are useful in thermoprocesses and in particular, injection molding processes.

The present invention relates to an aqueous sizing composition for mineral or organic fibers comprising: - 40% to 95% by weight of furanic resin, and - 5% to 60% by weight of at least one reducing sugar and / or at least one non-reducing sugar, relative to the total dry weight of the composition, said sizing composition having a dry matter content of between 0.5% and 50% by weight. The present invention also relates to a process for manufacturing insulation products based on mineral or organic fibers bonded with a binder using the aforementioned sizing composition, as well as the insulation products obtained by such a process.

Provided is a hot-melt adhesive having high sustainability and excellent adhesiveness.　The hot-melt adhesive contains a β-1,3-glucan derivative and, when applied to a wood piece, has compressive shear bonding strength in a specific range.

The present application provides self-adhesive false eyelashes with self-adhesive natural glue. A gelatin-carrageenan-Pullulan composite formula is utilized to create a self-adhesive natural glue that exhibits optimal viscosity. Therefore, this formulation imparts a strong self-adhesive effect to false eyelashes while maintaining low allergenicity. Consequently, the resulting false eyelashes are particularly well-suited for individuals with sensitive skin. The self-adhesive natural glue, which is formulated using a gelatin-carrageenan-Pullulan system, possesses notable superiorities in terms of adhesive performance, compatibility, reusability, safety, rebound resilience, skin adhesion, and other aspects for the self-adhesive false eyelashes within the scope of the present application. This innovation offers users a more convenient, comfortable, safe, and environmentally friendly makeup experience.

Biocompatible adhesive materials, such as biocompatible adhesive materials for use with biological tissue and / or medical implants, as well as methods and kits for making and using the biocompatible adhesive materials are provided. The biocompatible adhesive material includes a functionalized poloxamer component and an oxidized polysaccharide component, and can be tailored according to specific tissue types and conditions.

The invention discloses a method for efficiently preparing a plantain seed gum-ferulic acid green adhesive, and belongs to the technical field of plantain seed gum-ferulic acid green adhesive preparation processes, plantain seed gum and ferulic acid are used as raw materials, an efficient, simple and convenient grafting reaction can be achieved through the method, and after a sugar-phenol compound (5%) prepared through the method is fully dissolved, the plantain seed gum-ferulic acid green adhesive is obtained. The preparation of the green adhesive can be realized.

The invention relates to the technical field of adhesives, in particular to a paper tube adhesive and a preparation method and application thereof. The paper tube adhesive is prepared from the following raw materials in parts by weight: 80-100 parts of an adhesive component A, 20-25 parts of an adhesive component B, 0-5 parts of an adhesive component C and 50-65 parts of water. The paper tube adhesive prepared by the invention is relatively good in water solubility and safe to use, and does not cause any environmental pollution; the stickiness is high, bonding can be carried out at the moment of paper contact, and the forming quality of paper tubes is guaranteed; the drying speed is high, the paper tube is rapidly dried within one minute after being formed, the paper tube forming stiffness requirement is met, the production efficiency is improved, and the waiting time is shortened; and the production speed can be improved, the device can be suitable for different machine types, and the production speed is not lower than 60 m / min.

The invention discloses a plant-based composite adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The plant-based composite adhesive is prepared from peach gum essence, a composite thickener, boric acid, a composite stabilizer, absolute ethyl alcohol, deionized water and tea polyphenol. By optimizing a peach gum essence preparation process, adopting a composite thickening system of konjac glucomannan and xanthan gum and a composite stabilizing system of phytosterol and trehalose, and optimizing process parameters, the viscosity and bonding strength of the adhesive are effectively improved, the stability of the adhesive is enhanced, layering of the adhesive in the storage and use process is prevented, and the adhesive has the advantages that the adhesive is not prone to cracking, and the service life of the adhesive is prolonged. And multi-scene green requirements such as gold printing are met.

The application discloses a water-based composite binder for a silicon-based negative electrode of a lithium ion battery and a preparation method and application thereof, and belongs to the technical field of lithium batteries. The water-based composite binder for inhibiting volume expansion of the silicon-based negative electrode is prepared by cross-linking fucoidan and gallic acid. The water-based composite binder prepared by the application has the advantages of good dispersibility, self-healing property and strong adhesion. The three-dimensional network structure formed after the binder is cross-linked is beneficial to the transmission of electrons and ions, greatly improves the mechanical property and interface stability of the binder, enables the SiOx electrode to maintain good integrity in a cycle process, effectively inhibits the volume expansion of the SiOx negative electrode material in the charging and discharging process of the electrode, and enables the SiOx negative electrode to exhibit good cycle stability and durability.

Biocompatible adhesive materials, such as for use with biological tissues and / or medical implants, are provided, as well as methods and kits for making and using the biocompatible adhesive materials. The biocompatible adhesive materials include a functionalized poloxamer component and an oxidized polysaccharide component, and may be tailored for specific tissue types and conditions.

The present invention relates to the technical field of wood artificial flooring processing, and relates to a preparation method for a fireproof, flame-retardant, wear-resistant, scratch-resistant and environmentally-friendly solid wood composite flooring. A solid wood composite flooring is a common wooden flooring. A multi-layer solid wood board is sturdy, moisture-resistant and less prone to deformation. The solid wood composite flooring is a flooring processed by taking a natural wood as a surface board and solid wood strips or a single board as a base material, and thus has the characteristics of the wood, i.e., comfortable walking experience, strong stability and highly natural visual appearance, and has good adaptability to underfloor heating. In the present invention, a coating is additionally arranged on the surface of a wear-resistant layer, so that the flooring has better wear resistance and scratch resistance; in the present invention, a modified vegetable glue is used in a base material board, so that the emission of formaldehyde is reduced; in addition, in the present invention, a modified antibacterial wax composite coating is used in a fully wax sealing process, which is more in line with the concept of environmental protection.

The present invention relates to a microneedle patch for blocking ultraviolet rays and, more specifically, to a microneedle patch which can be attached to the skin of a user to deliver useful drugs while simultaneously blocking ultraviolet rays.

To provide an adhesive composition for hot press molding which can yield a hot press molded article having sufficient strength and water resistance through material recycling of lignin, a method for producing a hot press molded article, and a hot press molded article.SOLUTION: An adhesive composition for hot press molding contains a polyisocyanate and residual lignin after ethanol production from cellulose biomass.SELECTED DRAWING: None

The invention provides an adhesive for a ceramic pigment, a preparation method of the ceramic pigment and the ceramic pigment, and belongs to the technical field of pigments. The preparation method of the adhesive for the ceramic pigment comprises the following steps: cleaning and drying peach gum particles, and crushing to obtain peach gum powder; a mixture containing peach gum powder and deionized water is subjected to heating treatment in a first temperature interval so that the peach gum powder can be completely swelled, peach gum swelling liquid is obtained, the PH value of the mixture is 8-13, the mixture is prepared from, by mass, 20%-50% of peach gum powder and 80%-50% of deionized water, and the first temperature interval is 50-90 DEG C; heating the peach gum swelling liquid at a second temperature interval of 100-125 DEG C to obtain a peach gum solution crude product; and decoloring the peach gum solution crude product, and adjusting the pH value of the decolored peach gum solution to 7-8 to obtain the adhesive. The adhesive does not have pungent smell, so that the ceramic pigment prepared by adopting the adhesive does not have pungent smell.

The invention discloses a water-based composite binder for a silicon-based negative electrode of a lithium ion battery as well as a preparation method and application of the water-based composite binder, and belongs to the technical field of lithium batteries. The water-based composite binder for inhibiting volume expansion of the silicon-based negative electrode is prepared by crosslinking fucoidin and gallic acid. The water-based composite binder prepared by the invention has the advantages of good dispersity, strong self-healing property and cohesiveness and the like. A three-dimensional network structure formed after crosslinking of the binder is beneficial to transmission of electrons and ions, the mechanical property and the interface stability of the binder are also greatly improved, a SiOx electrode can keep good integrity in the circulation process, volume expansion of a SiOx negative electrode material in the electrode charging and discharging process can be effectively inhibited, and the service life of the SiOx electrode is prolonged. And the SiOx negative electrode shows good cycling stability and durability.

The application belongs to the technical field of biological adhesives, and particularly relates to a preparation method of a konjac bio-based adhesive and application thereof. The application constructs a high-performance konjac bio-based adhesive through a multi-step aqueous process: firstly, a PVA mother liquor is prepared, high shear is introduced to form a hydrogen bond interpenetrating network with konjac glucomannan, so as to guarantee wettability and early holding force; then, a reversible thixotropic sub-network is constructed by sodium lignosulfonate, tannic acid and kaolin, so as to realize shear thinning and stress buffering; a pre-hydrolyzed silane forms a Si-O-C bridge under weak acid conditions, so as to realize the transition of the interface from physical intercalation to chemical anchoring; a latent crosslinking agent (BTCA / SHP) ensures storage stability, and activates esterification reaction to strengthen the bulk phase when used; silane modified nano-SiO2 forms an inorganic lattice, which cooperates with energy consumption to inhibit cracks; finally, a dense glue line is obtained through vacuum degassing and filtration.

In response to the problem that the existing negative electrode cannot effectively suppress the electrode sheet bonding failure caused by the floating of styrene-butadiene rubber, the present invention provides a negative electrode binder composition, a negative electrode sheet, and a secondary battery. The negative electrode binder composition includes a first binder polymer and a second binder polymer, the first binder polymer includes an aromatic vinyl structural unit and a conjugated diene structural unit; the second binder polymer includes the following structural units: a, an ionic unit; b, an acrylate unit and / or an amide unit. The negative electrode binder composition provided by the present invention introduces a second binder polymer with an ionic unit, so that the molecular chain of the second binder polymer is stretched, the dispersion ability of the negative electrode slurry is improved, the consistency of the negative electrode sheet is further improved, and the problem of lithium plating on the negative electrode is suppressed. At the same time, the second binder polymer can disperse SBR well, form a good traction effect with SBR, suppress the floating of SBR, and thus improve the peeling force of the electrode sheet.