860 results about "Rosin" patented technology

The invention relates to the field of hot melt adhesives, and discloses a biodegradable hot melt adhesive based on castor oil and rosin resin and a preparation process thereof, the biodegradable hot melt adhesive comprises EVA resin, modified castor oil, rosin resin, a modified additive, a lubricant and an antioxidant; the modified castor oil is prepared by crosslinking castor oil and isophorone diisocyanate and reacting lignin, 1, 4-butanediol and isocyanate groups; the modified castor oil and the modified additive are added, the modified castor oil and the modified additive are added, the modified castor oil and the modified additive are added, the modified castor oil and the modified additive are added, the modified castor oil and the modified additive are added, the modified castor oil and the modified additive are added, and the modified castor oil and the modified additive are added, so that the modified castor oil and the modified additive are added, and the modified castor oil and the modified additive are added; the tensile property and the adhesive property of the hot melt adhesive are improved, and meanwhile, the flame retardant property and the high and low temperature resistance of the hot melt adhesive can be improved.

The invention belongs to the field of plastic product production, and particularly relates to a composite material for preparing a textile dyeing tube. The composite material mainly comprises the following components in parts by weight: 10 parts of PET resin, 10 parts of ASA resin, 1-6 parts of matt master batches, 1-3 parts of titanium dioxide, 1-2 parts of rosin, 0-1.5 parts of an antioxidant, 0-1 part of a fire retardant and 1-2 parts of a lubricating agent, wherein titanium dioxide is rutile titanium dioxide. Compared with the prior art, the components are good in compatibility; the molded product has excellent physical and mechanical properties, low glossiness, high strength (caused by titanium dioxide) and good tenacity, and is suitable for injection molding of plastic products; the metallic luster caused by titanium dioxide can be reduced; the noise can be reduced; titanium dioxide can be used for disinfecting under irradiation of an ultraviolet lamp; the composite material is very convenient; and the lubricating agent is added, so that the surface is relatively smooth.

The utility model relates to a blanking pipe dredging device for rosin resin conveying, which comprises a pipe body, a side shell is fixedly sleeved on the peripheral surface of the pipe body, the side shell is filled with heat conducting oil, a heater is fixedly connected to the peripheral side of the side shell, an upper pipe is fixedly arranged at the upper half part of the pipe body in a penetrating manner, and two ends of the upper pipe extend into the side shell. A rotating pipe is arranged in the pipe body, the upper half portion of the rotating pipe extends into the upper pipe, the rotating pipe is rotationally connected with the upper pipe, a driving part is arranged below the rotating pipe, and a heat conduction part is arranged in the rotating pipe. The utility model relates to the technical field of rosin resin conveying. The first water pump works to drive high-temperature heat conduction oil to circularly flow in the rotating pipe and the side shell, the peripheral side of rosin resin in the pipe body is subjected to heat conduction of the heat conduction oil in the side shell, the interior of the rosin resin is subjected to heat conduction of the heat conduction oil in the rotating pipe, and therefore the temperature rising speed of the rosin resin is increased, and the discharging speed is increased.

The invention relates to the technical field of high polymer materials, and discloses rosin-based bio-based ultraviolet curing resin as well as a preparation method and application thereof. The structural formula of the rosin-based bio-based ultraviolet curing resin provided by the invention is shown as a formula (I). The ultraviolet curing resin has a tricyclic diterpene rigid structure and carbon-carbon double bonds, has good crosslinking density, adhesion property, mechanical property and thermal stability after being cured into a film, and can be applied to the fields of adhesives, sealants or ultraviolet curing coatings and the like. The ultraviolet curing resin is prepared by taking a bio-based material as a raw material, and the preparation method is simple, green and environment-friendly. # imgabs0 #

The invention relates to the technical field of building waterproof materials, and provides a multi-layer self-protection self-adhesion waterproof roll and a preparation method thereof. The multi-layer self-protection self-adhesion waterproof roll sequentially comprises an isolating membrane, a self-adhesion glue layer, an elastic polyester felt buffer layer, an adhesive layer and a polymeric membrane layer from top to bottom, and the self-adhesion glue layer is prepared from, by weight, 65-75 parts of butyl rubber, 15-20 parts of SBS modifier, 8-12 parts of tackifying resin I, 0.5-1.5 parts of anti-aging agent, 8-15 parts of filler, 1-3 parts of polyethylene and 1-2 parts of flexibilizer. The tackifying resin I comprises rosin resin. According to the technical scheme, the problems that the self-adhesive waterproof roll does not have the self-protection capability, the peel strength is low and the holding power is poor in the prior art are solved.

The invention discloses a single-component self-polishing antifouling coating suitable for the surface of a rubber base material and a preparation method thereof. The single-component self-polishing antifouling coating is prepared by sequentially adding flexible antifouling resin, toughened resin, a toughening agent, rosin liquid, cuprous oxide, a composite antifouling agent, filler, pigment and a thixotropic agent into a grinding tank in proportion, stirring and dispersing uniformly. The coating provided by the invention adopts the degradable flexible resin as a base material, and the toughening resin and the toughening agent are added, so that the problems that the antifouling coating is easy to crack and poor in adhesive force on a flexible base material are solved. Meanwhile, the antifouling paint disclosed by the invention can be directly coated on a chlorinated rubber base material, and an intermediate connecting coating is not needed.

The invention relates to the technical field of novel resin and application thereof, in particular to modified rosin phenolic resin, a preparation method thereof and offset printing frosted ink. The modified rosin phenolic resin comprises silica powder grafted rosin phenolic resin, and the preparation method of the modified rosin phenolic resin comprises the following steps: preparing the silica powder grafted rosin resin, and modifying the phenolic resin by the silica powder grafted rosin resin. The resin is used for offset printing frosted ink, enables the frosted ink to be uniformly and stably transferred to the surface of a printing stock, is good in transfer property, uniform in frosted effect and good in concave-convex feeling, effectively enhances the adhesive force of a base material, is suitable for high-speed offset printing, and is excellent in printing adaptability.

The invention relates to the technical field of soldering tin, in particular to a low-splashing lead-free tin wire coated with rosin, which comprises the following alloy components: Sn, Sb, Cu, Ge, P, Ga, In and Ni. The solder wire is manufactured through extrusion forming and is coated with scaling powder composed of rosin resin, maleic anhydride, polyoxypropylene glycerol ether, composite ammonium salt, a solvent, sodium carboxymethyl cellulose and polyvinyl butyral. By optimizing the alloy components and the formula of the soldering flux and adding antimony, copper, germanium, phosphorus, gallium, indium and nickel elements, the fluidity and wettability of a solder wire are improved, soldering tin is easier to spread in the welding process, the outer covering rosin is decomposed in the welding process to generate active substances, oxides on the surface of metal can be removed, and the welding quality is improved. Good contact between the soldering tin and the metal surface is promoted, the surface tension of the soldering tin is further reduced, the fluidity of the soldering tin is improved, and therefore the splashing rate is remarkably reduced.

The invention relates to high-flexibility phenolic-aldehyde-free rosin modified resin, and belongs to the technical field of rosin resin. The raw materials comprise rosin, maleic anhydride, phthalic anhydride, pentaerythritol, glycerol, an acrylate monomer and magnesium oxide. The preparation process comprises four key reactions: (1) rosin and maleic anhydride are subjected to a Diels-Alder reaction to construct a rigid skeleton; (2) introducing phthalic anhydride to form a compact cross-linked network; (3) carrying out composite esterification on pentaerythritol and glycerol; and (4) the interface binding energy is improved by regulating and controlling the in-situ RAFT polymerization of the acrylate monomer. The resin does not contain phenolic aldehyde components, VOCs emission is smaller than 50 g / L, free formaldehyde is not detected, and the resin has high flexibility, heat resistance and excellent chemical resistance.

The invention relates to the technical field of turpentine processing, in particular to a turpentine continuous melting and clarifying processing device and method.The turpentine raw material is put into a feeding cylinder, piled in an inclined scattering cylinder, subjected to axial autorotation along with the feeding cylinder, discharged downwards and distributed in all areas in a dissolving tank, and after dissolving is completed, the turpentine raw material is poured into the feeding cylinder to be subjected to continuous melting and clarifying processing. When the telescopic part drives the sieve plate to move upwards until the bottom end of the movable cylinder abuts against the sieve plate, the sieve plate axially rotates along with the feeding cylinder and drives the movable cylinder to axially rotate, so that the material leakage port and the material scattering port are staggered, the movable cylinder rolls solid matters in the circumferential direction of the sieve plate, and the resin liquid is discharged into the clarifying tank along the liquid leakage pipe while slag is discharged from the slag outlet; after grease water in the clarification tank is layered, most of the water layer is discharged, the grease water is put into the feeding cylinder for circular treatment, and the steam injection system and the emptying pipe in the clarification tank are opened for distillation treatment, so that the continuous processing efficiency is further improved.

The invention discloses rosin modified zinc acrylate self-polishing resin, an antifouling paint containing the resin and a synthesis method. Firstly, under the action of an initiator, an acrylic prepolymer is synthesized from an acrylic monomer through a polymerization reaction; then, under the action of zinc oxide and benzoic acid, rosin resin is grafted to the side chain of the acrylic prepolymer, and zinc acrylate resin with the side chain containing rosin is obtained; and mixing, dispersing and grinding the rosin modified zinc acrylate resin, an anti-fouling agent, pigment filler, an auxiliary agent and a solvent to obtain the self-polishing anti-fouling paint based on the rosin modified zinc acrylate resin. The prepared rosin modified zinc acrylate self-polishing resin is high in polymerization degree, concentrated in molecular weight distribution and good in plasticity and flexibility, and the self-polishing antifouling paint based on the rosin modified zinc acrylate self-polishing resin comprises a cuprous oxide main antifouling agent and a composite organic antifouling agent and has the stable copper ion seepage rate and the good antifouling effect.

The invention relates to the technical field of amorphous calcium carbonate preparation, in particular to rosin-coated stable amorphous calcium carbonate and a preparation method and application thereof. Preparing a polyaspartic acid solution, adding an alcohol organic solvent to obtain a composite solvent, adding the regenerated micro-powder into the composite solvent, stirring and uniformly mixing to obtain a suspension, injecting CO2, and carrying out wet carbonization, vacuum filtration separation, washing and drying to obtain regenerated micro-powder micron particles containing ACC; the preparation method comprises the following steps: adding the calcium carbonate into a rosin solvent, uniformly stirring and mixing, and then carrying out vacuum filtration separation, washing and drying to obtain the rosin-packaged amorphous calcium carbonate micron particles. A uniform coating layer can be formed on the surfaces of ACC particles in a viscous solvent state, so that the influence of moisture on ACC crystallization is fully isolated, and the ACC stability is effectively maintained. Meanwhile, controllable dissolution is achieved through protonation in an alkaline environment, the gelling function of calcium carbonate can be recovered in a cement system, and the material performance is improved.

The invention discloses a thermosetting epoxy adhesive for a photovoltaic 0BB technology. The thermosetting epoxy adhesive comprises the following components in parts by mass: 10-20 parts of castor oil structure oxetane, 30-70 parts of alicyclic epoxy, 1-10 parts of polyester polyol, 1-5 parts of hydrogenated rosin resin, 0.6-3 parts of a thermal initiator, 0.5-1.5 parts of a coupling agent, 0.2-1.0 part of an anti-aging agent and 1-7 parts of a thixotropic agent. The thermosetting epoxy glue for the photovoltaic 0BB technology has the advantages of good yellowing resistance, low volatile matter at high temperature and good high and low temperature impact performance.

The invention relates to the field of solder materials, and provides a non-ferrous metal solder for low-temperature brazing and application, the solder is composed of carbon-coated copper nanorods, tin-bismuth alloy-coated silver nanoparticles, 2-mercaptobenzimidazole, rosin resin, an organic active agent, a dispersing agent, ionic liquid, hydroxyethyl cellulose, indium nitrate and citric acid. The silver particles are of a core-shell structure and are coated with tin-bismuth alloy layers, and continuous carbon layers are formed on the surfaces of the copper nanorods, so that the conductivity and the interface stability of the solder are effectively improved. The non-ferrous metal solder with excellent conductivity, low melting point and good wettability is prepared through step-by-step mixing, hot press molding and low-temperature heat treatment processes, and is suitable for electronic device packaging, power device connection and flexible circuit interconnection, and the defects of existing solder in the aspects of low-temperature welding and high conductivity are overcome.

The invention discloses an environment-friendly cooling anti-radiation refrigeration coating and a preparation method thereof, and belongs to the technical field of coating preparation. The raw materials are prepared from core materials, auxiliary materials and ingredients. The core material is prepared from a main raw material, hollow glass beads and environment-friendly resin, the auxiliary material is prepared from a nano additive and mineral pigment, and the ingredients are prepared from ferroferric oxide, nano titanium dioxide, diopside and polyvinylidene fluoride. The main raw materials comprise carbon quantum dots, carbon nanofibers, carbon nanospheres and graphene quantum dots; the environment-friendly resin base material is prepared from waterborne polyurethane resin, rosin resin, shellac resin and polytetrafluoroethylene; the nano additive is composed of silicon carbide, carbon black, carbon fibers, magnesium borate and carbon nanotubes. According to the coating, solar energy can be converted into light energy, the sunlight reflectivity of the coating is improved through the unique optical property of the coating, the sunlight reflectivity of the coating can be correspondingly improved along with increase of the sunlight intensity, and therefore the situation that a building absorbs excessive heat is avoided.

The invention relates to the technical field of high polymer materials, and discloses a high-durability pressure-sensitive adhesive with low VOCs release and a preparation method thereof.The high-durability pressure-sensitive adhesive is prepared from, by weight, 50-80 parts of acrylate copolymer, 0.5-5 parts of cross-linking agent, 10-30 parts of tackifying resin, 1-10 parts of inorganic filler, 0.1-2 parts of antioxidant and 20-50 parts of solvent. Wherein the tackifying resin is at least one of hydrogenated petroleum resin and glycerol ester of rosin, and the inorganic filler is one of nanoscale silicon dioxide and calcium carbonate. Butyl acrylate is used as a main monomer, 2-ethylhexyl acrylate is used as a comonomer, acrylic acid is used as a functional monomer, benzoyl peroxide is used as an initiator, free radical polymerization is carried out at the temperature of 60-85 DEG C under the protection of nitrogen for 4-8 hours, and a copolymer chain with the molecular weight distribution index (PDI) smaller than or equal to 2.5 is formed, so that the viscosity and elasticity of colloid can be balanced; the peeling strength and the weather resistance are improved, and the colloid is prevented from being too soft or embrittled.

The invention relates to the field of functional plastic materials, and discloses a low-moisture-absorption high-yellowing-resistance PPA material and a preparation method thereof. The low-moisture-absorption and high-yellowing-resistance PPA material is prepared from the following raw materials in parts by weight: 50-70 parts of PPA resin, 32-42 parts of glass fibers, 10-20 parts of mineral filler, 25-35 parts of hydrophobic nylon resin, 5-8 parts of a flame retardant and 1-3 parts of an antioxidant. The hydrophobic nylon resin is prepared from PA (Polyamide) resin, rosin modified maleic resin, tetrameric ricinoleate, dibutyl itaconate and a silane coupling agent; the preparation method comprises the following steps: mixing the PPA resin, the hydrophobic nylon resin, the glass fiber, the mineral filler, the flame retardant and the antioxidant, performing melt extrusion, cooling and drying. And dicing. The preparation process is simple, and the prepared PPA material has relatively good water resistance and yellowing resistance, has relatively good welding stability and temperature-resistant stability when being applied to an electronic connector, and is not easy to crack.

The invention provides a metallic yarn protection liquid and a preparation and application method thereof, and the preparation and application method comprises the following steps: S1, dissolving an alkali-resistant resin mixture in a solvent, stirring, and uniformly dispersing to obtain a uniform solution, wherein the alkali-resistant resin mixture is prepared from the following components in percentage by mass: 30 to 35 percent of epoxy resin, 20 to 25 percent of polyvinyl butyral resin, 20 to 25 percent of polyurethane resin and 15 to 20 percent of fluorocarbon resin; s2, adding a tackifier, a plasticizer, an ultraviolet absorbent, a wear-resistant additive, a waterproof additive and an antioxidant into the uniform solution, fully stirring, and uniformly dispersing to obtain a transparent solution, wherein the tackifier is rosin; and S3, adding a surfactant into the transparent solution, continuously stirring, and uniformly dispersing to obtain the metallic yarn protection liquid, wherein the prepared metallic yarn protection liquid has multiple functions of high alkali resistance, solarization resistance, friction resistance and washing resistance.

The invention relates to the technical field of hot melt adhesive preparation, and discloses a modified rosin castor oil-based polyurethane degradable hot melt adhesive and a preparation method thereof. The modified rosin castor oil based polyurethane degradable hot melt adhesive is prepared from the following raw materials in parts by weight: 200 to 250 parts of castor oil modified polyurethane, 80 to 120 parts of modified rosin resin, 15 to 30 parts of functional modified nanoparticles, 10 to 15 parts of ammonium polyphosphate, 5 to 10 parts of aluminum hydroxide, 0.5 to 5 parts of plasticizer and 0.1 to 0.5 part of antioxidant. The rosin resin is modified by acrylic acid and then compounded with castor oil-based polyurethane resin, so that the adhesion, heat resistance, glossiness and hardness of the material are improved, the material has good antibacterial property by adding functional modified particles, and meanwhile, the flame retardant property of the material is further improved.

The invention relates to the technical field of adhesives, in particular to a high-fluidity hot melt adhesive for compounding industrial ton bags and a preparation method thereof.The high-fluidity hot melt adhesive is prepared from, by weight, 15-25 parts of compound rubber, 32-40 parts of petroleum resin, 20-35 parts of naphthenic rubber oil, 5-12 parts of liquid rosin resin and 0.2-0.5 part of auxiliaries; the petroleum resin comprises hydrogenated resin and monomer resin; the composite rubber comprises one or two of SIS (styrene-isoprene-styrene) and SEBS (styrene-ethylene-butylene-styrene). By introducing the specific SEBS, the hydrogenated C5 / C9 copolymer resin, the liquid resin and the monomer resin, the prepared ton bag composite adhesive has relatively good coating viscosity, low-temperature initial adhesion compositing property and short-time high-temperature shearing resistance, and can meet the requirements on a spraying process in different use scenes.

The invention relates to the technical field of adhesives, in particular to a hot-melt pressure-sensitive adhesive, a preparation method thereof and a label product. The hot-melt pressure-sensitive adhesive is prepared from the following components in parts by weight: 14 to 25 parts of diluent, 15 to 35 parts of styrene block copolymer, 2.5 to 6 parts of ethylene-acrylic acid copolymer, 35 to 55 parts of hydrogenated rosin resin and 0.2 to 2 parts of antioxidant, the acid value of the hydrogenated rosin resin is greater than or equal to 150mg KOH / g. The hot-melt pressure-sensitive adhesive disclosed by the invention has excellent adhesive strength, thermal stability and aging resistance, and is good in environmental protection property; a label product prepared from the hot-melt pressure-sensitive adhesive disclosed by the invention can be separated from a pasted object within 5 minutes (the fastest time can be within 1 minute) after alkali water washing, so that the realization of an automatic container recovery process is facilitated.

The present application provides a method for preparing rosin resin, which belongs to the field of rosin processing. The preparation method comprises the following steps: (1) putting rosin into a reactor, heating to 180-200°C under inert gas protection and melting; (2) adding a catalyst of 0.01-0.5% by weight of rosin and a polyol of 6-12% by weight of rosin, and reacting at 200-290°C for 6-15 hours; (3) evacuating until the rosin resin reaches a specified acid value; (4) adding an antioxidant of 0.01-0.5% by weight of rosin, stirring evenly, and discharging to obtain rosin resin. The present application adds a post-treatment agent, so that the prepared rosin resin has less effect on cell activity, shows excellent cell compatibility, and has good weather resistance, and has important application value in the medical field.

The invention relates to rosin modified resin and a preparation process thereof and low-odor printing ink, the rosin modified resin is prepared from maleic anhydride, sulfonate alkyd resin, rosin and a metal organic framework, and the sulfonate alkyd resin is prepared from neopentyl glycol, dibutyltin dilaurate, m-phthalic acid-5-sodium sulfonate, phthalic anhydride and pentaerythritol. The printing ink has the effect of improving the strength and smell of the printing ink.

Disclosed in the present invention are a super-hydrophobic polylactic acid film having long-lasting self-cleaning performance and a preparation method therefor, belonging to the technical field of materials. The method comprises: by using polylactic acid as a main material, polymerized rosin as a pore-foaming agent and toluene as an extraction agent, performing non-solvent induced phase separation to prepare a polylactic acid porous film; and then soaking same in a hydrophobic substance solution so as to obtain the super-hydrophobic polylactic acid film. The super-hydrophobic polylactic acid film obtained in the present invention has an initial water contact angle reaching 150 degrees or above, and has super-hydrophobicity and a remarkable self-cleaning effect. In addition, after a plurality of times of rubbing, 94% or above of the water contact angle of the film can be kept and the self-cleaning property is still remarkable. Therefore, said film has wide application prospects in the fields such as self-cleaning, fluid drag reduction, oil-water separation and icing and corrosion prevention.

The invention discloses a waterborne polyurethane adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials. The waterborne polyurethane adhesive provided by the invention comprises a main agent and a curing agent, and most of raw materials of the main agent and the curing agent are waterborne materials, such as a waterborne polyurethane dispersion, a waterborne acrylic emulsion, a waterborne EVA emulsion, a waterborne rosin resin emulsion, a waterborne terpene resin emulsion and waterborne isocyanate. Due to the water-based materials, the adhesive has the characteristics of low VOC (volatile organic compounds), zero formaldehyde and low odor. Moreover, the water-based isocyanate in the curing agent and the active hydroxyl in the main agent component can be subjected to addition polymerization reaction to form a cross-linked network polymer, so that the adhesive has relatively high cohesiveness and can meet the bonding requirement of the automotive trim.

The present invention relates to the technical field of photocurable materials, and in particular to a cationic epoxy resin photocurable adhesive and a preparation method and application thereof. The cationic epoxy resin photocurable adhesive provided by the present invention comprises the following components by weight percentage: 25-55% alicyclic epoxy resin, 10-25% organosilicon-modified alicyclic epoxy resin, 10-25% oxetane, 5-20% rosin ester diol, 5-10% adhesion promoter, 0.3-3% sensitizer, and 0.1-2% photoacid generator. The cationic epoxy resin photocurable adhesive provided by the present invention is used in the bonding of electronic materials, and has the advantages of high adhesion and high elongation, especially the adhesion to copper materials is higher than that of conventional cationic epoxy adhesives, which solves the defects of conventional cationic photocurable adhesives, and the cured product has excellent performance, high aging reliability, and a wide range of applications.

To provide: a reactive adhesive that has excellent alkali releasability and does not undergo strength degradation over time even when the contents include acidic components, alkaline components, volatile components, surfactant components, and the like, and that also exhibits excellent recyclability and long-term content resistance; and a laminate, a packaging material and a packaged article that achieve both recyclability and long-term content resistance.SOLUTION: The reactive adhesive comprises a polyol composition and a polyisocyanate. The polyol composition comprises a polyester polyol (A) and a rosin-modified resin (B) having a hydroxyl group and an acidic group. The polyester polyol (A) is produced from polybasic acids or derivatives thereof and polyhydric alcohols as essential raw materials. The content of polybasic acids or derivatives thereof having an aromatic ring in the total amount of polybasic acids or derivatives thereof is 35 mass% or more. The mass ratio ((B) / (A)) of the rosin-modified resin (B) to the polyester polyol (A) is from 0.03 to 1.5.SELECTED DRAWING: None

The invention relates to the technical processing field of copper powder columns, in particular to a production process of an integrated supporting copper powder column and a VC vapor chamber, and the production process comprises the following steps that a mold is provided with a plurality of powder containing units, each powder containing unit is provided with a plurality of powder preparing grooves, and the adjacent powder preparing grooves are connected through a channel; the preparation method comprises the following steps: uniformly stirring copper powder, bismuth trioxide, antimony trioxide, silver, rosin resin, an adhesive, carbon nanotubes, a pore forming agent and water to obtain mixed powder; filling the mixed powder into a powder making groove and a channel; inserting the mixed powder into the center of the powder making tank filled with the mixed powder to obtain a pre-fired product; and preheating the pre-fired product in an environment with the temperature of 200-300 DEG C, preserving heat for 40-60 minutes at the temperature of 600-800 DEG C, preserving heat for 2-3 hours at the temperature of 1070-1100 DEG C, cooling to 20-30 DEG C, and demolding to obtain a finished product. Through the design of the powder containing unit of the mold, copper column inserting firing is matched after powder filling, an integrated supporting structure is formed, the overall stability of the supporting column is enhanced, different height requirements are met, collapse and falling are avoided, and the use stability of the vapor chamber is guaranteed.

The invention discloses a natural resin adhesive, a production method and application in paper-plastic composite packaging, and belongs to the technical field of adhesives, raw materials adopt bio-based rosin resin and amber resin as main materials and polyimide resin containing antioxidant modified polysilsesquioxane as an auxiliary material, and the requirements of green and environmental protection are met. The adhesive has excellent ultraviolet shielding function, can meet the requirement of long-time adhesion of packaging without aging in paper-plastic composite packaging, and structurally contains rigid structures of polysilsesquioxane and titanium-based MOF, so that the overall strength of the adhesive can be improved, cracking and stripping are avoided, and the adhesive has high adhesive strength. And the porosity of the polysilsesquioxane and the titanium-based MOF can improve the heat dissipation capability of the adhesive.

The invention relates to a lead-free and halogen-free soldering paste and a preparation process thereof, and belongs to the technical field of soldering paste production, through the combination of nano-silver-loaded carbon nanotubes, organically coated solder alloy powder and soldering flux, the surface tension of the lead-free and halogen-free soldering paste can be reduced by carbon nanotube surface carboxyl in the nano-silver-loaded carbon nanotubes, so that the lead-free and halogen-free soldering paste is obtained. Nano-silver and tin form an Ag3Sn strengthening phase which synergistically promotes wetting and spreading of the solder on a substrate, meanwhile, the carbon nanotubes loaded with the nano-silver are uniformly dispersed in the soldering paste to play a dispersion strengthening role, and the brittleness caused by bismuth segregation is effectively inhibited in cooperation with the grain refinement effect of copper and indium in the solder alloy powder; and the organic coating layer hydrogenated rosin-terpene resin and the soldering flux alcohol ether solvent form a slight dissolution-fusion effect, so that the welding flux alloy powder is prevented from being oxidized, an organic acid active agent can be released to remove a substrate oxidation film, the metallurgical bonding quality of a welding interface is further guaranteed, and the defects of pseudo soldering, cavities and the like are reduced.