1033results about "Polyether adhesives" patented technology

The invention discloses an electrolytic adhesive, an electrolytic cotton adhesive tape and a preparation method of the electrolytic adhesive. The electrolytic cotton adhesive tape comprises the following components in parts by weight: 5-10 parts of 1, 1 '-ferrocene diformyl chloride, 10-15 parts of acrylic acid beta-cyclodextrin ester, 3-8 parts of polyethylene glycol diglycidyl ether, 10-20 parts of ionic liquid, 1.5-3 parts of a cross-linking agent, 10-15 parts of tackifying resin and 0.5-1.5 parts of an initiator, and a polymer matrix comprises an acrylic acid-hydroxypropyl acrylate copolymer and acrylic acid-2-ethylhexyl ester. Comprising an adhesive layer and an adhesive tape base layer, the adhesive layer is prepared from the electrolytic adhesive, and the adhesive tape base layer is prepared from acrylic foam; the obtained electrolytic cotton adhesive tape has high initial adhesion and viscosity strength after power-on and power-off re-adhesion.

The invention relates to silane modified polyether-polybutadiene, a transparent hydrolysis-resistant silane modified polyether sealant and a preparation method thereof. The silane modified polyether-polybutadiene is obtained by reaction of silane modified polybutadiene and polyether amine, and the silane modified polybutadiene is obtained by reaction of hydroxyl-terminated epoxidized polybutadiene and isocyanate silane. The preparation raw materials of the silane modified polyether sealant comprise the silane modified polyether-polybutadiene disclosed by the invention. The silane modified polyether sealant disclosed by the invention has very low water permeability and excellent hydrolysis resistance and mechanical properties.

The invention discloses a mobile phone narrow frame low-pressure injection molding sealing adhesive and a preparation method thereof, and belongs to the technical field of adhesives. According to the technical scheme, the adhesive is characterized by being prepared from, by weight, 35-46 parts of aliphatic epoxy resin, 10-20 parts of polyether polyol, 16-25 parts of reactive diluent, 15-20 parts of toughened resin, 1.4-2.0 parts of initiator, 0.8-1.2 parts of coupling agent and 1.5-2.0 parts of fumed silica, and an adhesive layer obtained after the adhesive is subjected to UV curing is low in shrinkage rate, high in modulus and good in adhesion property. The width of the mobile phone frame can be well controlled, compared with a plastic piece, the screen-to-body ratio of a mobile phone screen can be further improved, and meanwhile the requirements for bonding and reliability of a client side can be met.

The invention discloses a silane modified polyether flame-retardant adhesive and a preparation process thereof, and relates to the technical field of sealants, a phosphate plasticizer is selected as a plasticizer, a flame-retardant filler is selected from any one or two of aluminum hydroxide and magnesium hydroxide, and silane modified polyether resin is added as flame-retardant resin. All the components are compounded and mixed to obtain the modified flame-retardant adhesive, and the flame-retardant resin, the flame-retardant filler and the plasticizer have a good synergistic flame-retardant effect, so that the flame-retardant adhesive achieves a good flame-retardant effect. According to the invention, mercaptoacetic acid modified silicon resin microspheres are prepared, then the mercaptoacetic acid modified silicon resin microspheres react with lead acetate and zinc acetate by utilizing the adsorbability of sulfydryl to prepare modified silicon resin, and the silicon resin is an anti-dripping flame retardant and can form a stable and compact carbon layer structure after combustion; lead acetate and zinc acetate are beneficial to dehydrogenation and charring in the combustion process, so that the flame retardant property is further improved.

The invention relates to the technical field of epoxy splicing adhesives, in particular to a high-performance prefabricated part epoxy splicing adhesive and a preparation method thereof.The epoxy splicing adhesive comprises a component A and a component B. The component A is prepared from 3%-8% of polyether polyol, 2%-4% of hydrophobic fumed silica, 0.1%-1% of a silane coupling agent, 0.01%-0.5% of a defoaming agent, 50%-75% of modified quartz sand, 1%-5% of color paste and the balance epoxy resin; the modified quartz sand is prepared by grafting an amino silane coupling agent on the surface of quartz sand, then reacting with polychlorophosphazene, and then reacting with glycidol; the component B comprises the following components in percentage by weight: 0.2-4% of color paste, 1-5% of hydrophobic fumed silica, 0.1-1% of an amino silane coupling agent, 10-25% of 0.5 mm quartz sand, 40-60% of 0.1 mm quartz sand and the balance of a modified amine curing agent; the preparation method has the advantage that the mechanical strength and the bonding strength of the epoxy splicing adhesive are improved.

When considering the prior art, the objective of the present invention is to provide a curing catalyst which is highly safe and has a curing rate suitable for practical use. According to the present invention, provided is a curing catalyst [B] which is used for curing a polymer [A] having a reactive hydrolyzable silicon-containing group, the curing catalyst [B] containing a metal alkoxide [B1] and an ammonium hydroxide [B2], wherein: the metal alkoxide [B1] includes one or both of a titanium compound [B1a] represented by chemical formula (1) and another metal alkoxide [B1b]; the another metal alkoxide [B1b] is an alkoxide of a metal other than titanium; and the ammonium hydroxide [B2] is represented by chemical formula (2).

The invention belongs to the technical field of adhesives, and relates to a packaging adhesive and a preparation method thereof, a component A of the packaging adhesive comprises 50-85 parts of trimethoxysilane-terminated polyether, 5-10 parts of an epoxy curing agent, 1-5 parts of a coupling agent, 1-3 parts of a dewatering agent, and 15-40 parts of a filler; the component B comprises 45-85 parts of polyurethane modified epoxy resin, 10-30 parts of a plasticizer, 0.5-3 parts of a catalyst, 1-3 parts of water and 15-45 parts of filler; the mass ratio of the component A to the component B is 1: (0.8-1.2). The packaging adhesive has excellent temperature resistance, good adhesive flexibility, low modulus at low temperature and excellent aging performance, a cured body with excellent sealing performance, good air tightness and good adaptability to a base material is formed after the component A and the component B are mixed and cured, and the packaging adhesive is a packaging material providing long-term comprehensive protection for a power battery; and the component A and the component B do not contain volatile matters, are low in odor and are beneficial to the use environment and operators.

Provided are: a curable resin composition that obtains a cured product having excellent adhesiveness, flexibility and dismantling properties; a cured product thereof; and a disassemblable adhesive material. A curable resin composition according to the present embodiment contains: an epoxy resin (A) having a specific structure and having an epoxy equivalent weight of 500-10,000 g / eq, an epoxy resin (B) having an epoxy equivalent weight of 100-300 g / eq, a curable functional group-containing compound (C), and thermally expandable particles (D). The curable functional group-containing compound (C) has a specific structure having a reversible bond.

The invention provides a single-component modified silane adhesive as well as a preparation method and application thereof. The adhesive is prepared by mixing the following components: silane modified polyether resin, silane modified polymer resin, a plasticizer, a composite light stabilizer, a filler, a rheological additive, a water removal agent, a coupling agent and a catalyst, the silane modified polyether resin is silane-terminated resin prepared by a hydrosilylation method; the silane-modified polymer resin is a silane-terminated polymer resin containing a urethane bond. The adhesive is excellent in comprehensive performance, the tensile strength of a body is larger than 3 MPa, the elongation at break is larger than 450%, the adhesive is high in adhesion universality to metal base materials, PET films, ceramics, glass, wood floors, PVC, PC, ABS, wood-plastic composite materials and paint faces, the base materials do not need to be specially treated, the damage form is cohesive failure, and the adhesive has good adhesion strength, tear resistance and excellent temperature resistance and is suitable for being applied to the field of wood products. After aging at 120 DEG C for one week, the tensile strength of the body is greater than 3 MPa, the elongation at break is greater than 430%, and the surface layer can be coated after curing.

The present disclosure relates to a process of manufacturing curable precursor of a structural adhesive composition. According to another aspect, the present disclosure is directed to method of bonding two parts.

Disclosed is a method for producing a joined body obtained by joining a base material A, a solid joining agent containing an amorphous thermoplastic resin, which is at least one of a thermoplastic epoxy resin and a phenoxy resin, as a main component, and a base material B in this order, in which at least the base material A is a thermoplastic resin base material, an epoxy equivalent of the amorphous thermoplastic resin is 1,600 g / eq. or more or the amorphous thermoplastic resin does not contain an epoxy group, and a heat of fusion of the amorphous thermoplastic resin is 15 J / g or less, and the method has a step of superposing and a joining step (1), or has a joining step (2-1) and a joining step (2-2).

The invention relates to the technical field of adhesives, and provides a high-thermal-conductivity modified silane polyether adhesive and a preparation method thereof.The silane-terminated polyether sealant is prepared from silane modified polyether resin, modified filler, a flame retardant, a silane coupling agent, a catalyst, an antioxidant and a water removal agent; the modified filler is obtained by grafting a hydroxylated AlN filler or a hydroxylated BN filler or a hydroxylated AlN and hydroxylated BN compound filler with silane under the catalysis of a weak acid to form a Si-O-Al or / and Si-O-B covalent bond network, and then mixing the Si-O-Al or / and Si-O-B covalent bond network with nano silicon dioxide particles of which the surfaces are coated with polydopamine. Through a multi-dimensional filler modification technology and reasonable matching of other auxiliaries, the problem of synergism of heat conduction, flame retardance and mechanical properties of the MS adhesive under a high filling system is solved, and the material is suitable for a new energy power battery module.

The invention provides a single-component silane modified polyether sealant as well as a preparation method and application thereof. The single-component silane modified polyether sealant is prepared from the following raw materials in parts by weight: 280 to 300 parts of silane modified polyether resin, 100 to 130 parts of environment-friendly plasticizer, 500 to 550 parts of nano calcium carbonate, 10 to 30 parts of fumed silica, 3 to 5 parts of ultraviolet light absorber, 3 to 5 parts of light stabilizer, 3 to 5 parts of antioxidant, 15 to 20 parts of dewatering agent, 15 to 25 parts of silane coupling agent and 3 to 5 parts of catalyst. The single-component silane modified polyether sealant provided by the invention has excellent bonding performance to a metal substrate, has high hardness, high tensile strength, high elongation at break and high shear strength, is moderate in viscosity, is beneficial to conventional process construction, and has excellent comprehensive performance.

This reactive silicon group-containing polyoxyalkylene derivative in which one or both terminals of a polyoxyalkylene chain are blocked with a group represented by structural formula (1) has good curability even if an amine-based compound is used as a curing catalyst, and gives a cured product having excellent yellowing resistance and heat resistance. (In the formula, R1 and R2 each independently represent a hydrogen atom, a C1-10 aliphatic saturated hydrocarbon group or a C6-10 aryl group, each R3 independently represents a C1-10 aliphatic saturated hydrocarbon group or a C6-10 aryl group, and n is an integer of 2-12. The wavy line represents a bond.)

The invention provides a high-thermal-conductivity pouring sealant which comprises the following components in parts by weight: a component A consisting of modified bisphenol A epoxy resin, polyether polyol, isocyanate ethyl acrylate, a siloxane coupling agent, a platinum catalyst, hollow glass microspheres and zinc borate, the component B is composed of vinyl silicone oil, dimethyl silicone oil, a modified heat-conducting filler, allyl glycidyl ether and a silane coupling agent; through the synergistic effect of the component A and the component B, the pouring sealant with the properties of high heat conductivity, high flame retardance and the like is obtained.

The invention relates to a chemically curable composition, comprising - at least one chemically curable matrix; - more than 70 wt.-%, based on the total composition, of at least one thermally conductive filler; - optionally additives, in particular selected from curing catalysts, accelerators, plasticizers, organosilanes, stabilizers, and colorants; characterized in that said thermally conductive filler is surface-coated by silanzation using a mixture of at least one organosilane OS1 according to R1-Si(OR3)3 and at least one organosilane OS2 according to R2-Si(OR3)3, wherein R1 is a linear or branched C2 to C20 alkyl or alkenyl group optionally having cyclic and / or aromatic moieties, and wherein R2 is a polyether group, and wherein R3 is a methyl or ethyl group, with the provisio that the mass ratio of organosilane OS1 and organosilane OS2 employed for the surface silanization coating is between 1:2 and 2:1, preferably between 1:1.5 and 1.5:1, in particular between 1:1.1 and 1.1:1. The chemically curable composition shows low viscosity and improved applicability alongside with exceptionally high filler levels and thus excellent thermal conductivity and is particularly suitable as adhesive, gap filler, or sealant suitable for e-coat applications and battery bonding especially in electric automobile battery assembly.

The present invention provides a UV adhesive composition, a UV viscosity-reducing adhesive and a UV viscosity-reducing film. In terms of mass percentage, the UV adhesive composition comprises: 38-80wt% of a mixed resin, 10-48wt% of an active monomer, 0.01-5wt% of a photoinitiator, 0.01-5wt% of a curing agent, and 0.01-40wt% of a solvent; wherein the mixed resin is a non-photosensitive resin and a photosensitive resin, the non-photosensitive resin is selected from any one or more of an epoxy resin, a hydroxyl-containing resin, and a polyurethane resin, and the photosensitive resin is a bifunctional acrylic resin and / or a multifunctional acrylic resin. Through the mutual coordination of the components in the UV adhesive composition, the appropriate viscosity, suitable crosslinking density and hardness of the bonded object are achieved, thereby helping to reduce the probability of overflow, reduce the difficulty of peeling during the process, and improve the process yield.

The invention provides bio-based MS base resin, bio-based MS glue and a preparation method of the bio-based MS base resin and the bio-based MS glue, and belongs to the technical field of high polymer materials. The MS base resin is isocyanate group silane terminated bio-based polyether polyol or polyether polyol subjected to chain extension. The polyether polyol is selected from one or more of bio-based polyethylene glycol, bio-based polypropylene glycol, bio-based poly (trimethylene ether glycol) and bio-based polytetrahydrofuran ether glycol. And mixing the bio-based MS base resin, the plasticizer, the filler, the catalyst III, the coupling agent and the auxiliary agent, and stirring under a vacuum condition to obtain the bio-based MS adhesive. The bio-based MS adhesive prepared by the invention is high in bio-based material content, uncomplicated in preparation process and low in energy consumption, and meanwhile, an adhesive body is good in mechanical property, high in stability and good in high temperature resistance and humidity and heat resistance.

The invention discloses a dry-method electrode binder and a preparation method thereof. The dry-method electrode binder comprises polyethylene glycol-methacrylate. According to the invention, the limitation of the existing polytetrafluoroethylene as a dry-method electrode binder is overcome, so that the preparation process of the battery electrode and the performance of the battery are improved. According to the invention, the structure is optimized through copolymerization modification. Through copolymerization with a monomer with a functional group, the molecular structure of polyethylene glycol-methacrylate can be further adjusted, so that higher bonding strength, good thermal stability and better conductivity are realized. The copolymerization modification can also effectively improve the temperature resistance and corrosion resistance of the polyethylene glycol-methacrylate, so that the polyethylene glycol-methacrylate keeps better performance under different environmental conditions, thereby effectively improving the performance of the battery, reducing the production cost and promoting the innovation and optimization of the lithium battery manufacturing process.

The invention discloses a preparation method of a UV viscosity-reducing adhesive tape. The preparation method specifically comprises the following steps: (1) adding a thermal initiator into an acrylic monomer for heating copolymerization; (2) adding a photoactive monomer and an active tin reagent for heating and grafting; (3) adding a photoinitiator and an auxiliary agent, and mixing; (4) coating the base material layer and baking; and (5) covering a release film, and curing. According to the invention, the photoactive monomer is directly grafted to the branched chain of the base adhesive skeleton, the UV viscosity-reducing adhesive can be prepared without subsequent addition of a multifunctional monomer or oligomer, and meanwhile, the auxiliaries are creatively added, so that the effective adjustment of the UV viscosity-reducing adhesive between the adhesive force and the viscosity can be realized. The UV viscosity-reducing adhesive tape prepared from the UV viscosity-reducing adhesive is high in initial adhesion (19.09 N / 25 mm at most), can well protect and fix a protected material, is low in stripping force (0.18 N / 25 mm at least) after being irradiated by UV light, is easy to strip from the protected material, and has the characteristics of no pollution, no residue and the like.

The invention relates to the technical field of resin composite materials, in particular to a layer-adding adhesive film for an FC-BGA packaging carrier plate, a preparation method of the layer-adding adhesive film and an adhesive-coated copper foil. The layer-adding adhesive film is prepared from the following raw materials in parts by mass: 50 to 60 parts of epoxy resin, 180 to 200 parts of inorganic filler, 30 to 36 parts of curing agent, 4 to 6 parts of modified phenoxy resin, 3 to 5 parts of carbodiimide resin and 0.2 to 0.4 part of 4-dimethylaminopyridine. Modified phenoxy resin and carbodiimide resin are added on the basis of main components such as epoxy resin, inorganic filler and a curing agent, meanwhile, 4-dimethylaminopyridine is used as a curing accelerator, and through the synergistic effect of all the components, the dielectric loss angle tangent of a layer-adding adhesive film can be effectively reduced, the glass-transition temperature of a layer-adding adhesive layer is increased, and the bonding strength of the layer-adding adhesive film is improved. Good flame retardance of the layer-adding adhesive film is ensured, and the layer-adding adhesive film is applied to the adhesive-coated copper foil.

The invention relates to an underfill adhesive for flip chips, which is prepared from the following raw materials in parts by mass: 22-30 parts of bifunctional epoxy resin, 5-8 parts of polyfunctional epoxy resin, 10-14 parts of polyether modified flexible epoxy resin, 7-10 parts of trifunctional maleimide compound shown in a formula (I), 4-7 parts of curing agent containing more than two amino groups and 3-4 parts of low molecular weight polyamide, 1-3 parts of a coupling agent, 0.5-2 parts of a curing accelerator and 100 parts of coupling agent modified spherical silica powder. The underfill adhesive provided by the invention has very good fluidity, relatively high Tg, proper mechanical strength and excellent warping resistance, also has high-temperature-resistant and damp-heat-resistant aging resistance and excellent moisture resistance, and can be applied to various high-temperature / high-humidity scenes.

The present invention relates to a process for preparing a bonding resin, lignin in solid form or in the form of a dispersion in water is mixed with a crosslinker; and optionally one or more additives followed by addition of a basic solution. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards, laminates or mineral wool insulation.

The invention discloses a preparation method of calcium carbonate carbon dot fluorescent powder and an ultraviolet aging resistant fluorescent sealant, and relates to the field of sealants, carbon dot powder is prepared by controlling the weight ratio of anhydrous citric acid to cysteine hydrochloride, the proportion of amino groups and carboxyl groups on the surfaces of carbon dots can be effectively regulated and controlled, and then the ultraviolet absorption performance of the carbon dots is regulated and controlled. And dissolving the carbon dot powder in a calcium salt solution to form a mixed solution, dropwise adding the mixed solution into a carbonate solution for reaction, and preparing the calcium carbonate carbon dot fluorescent powder which is good in fluorescence property and is beneficial to improving the ultraviolet aging property of the sealant by a simple and rapid preparation method. The silane modified polyether prepolymer is selected as a base material, polypropylene glycol, an organic tin catalyst and 3-(aminopropyl) trimethoxysilane are compounded, the prepared sealant has excellent fluorescence performance, the ultraviolet aging resistance of the sealant can be remarkably improved, and the degradation degree of mechanical properties of the sealant before and after aging is remarkably reduced.

The invention relates to the technical field of new energy automobile power battery modules, in particular to a heat-conducting structural adhesive for a power battery and a preparation method thereof.The heat-conducting structural adhesive comprises a component A and a component B. The component A is prepared from 40-50 parts of siloxane-terminated polyether resin, 110-130 parts of heat-conducting filler, 0.4-0.6 part of a curing agent, 0.2-0.4 part of a coupling agent and 0.3-0.7 part of a water removal agent; the component B is prepared from the following components in parts by weight: 17 to 23 parts of epoxy resin, 45 to 55 parts of heat-conducting filler, 0.01 to 0.03 part of modified graphene oxide, 0.8 to 1.2 parts of water, 0.4 to 0.8 part of thixotropic agent, 0.3 to 0.7 part of adhesion promoter, 1 to 1.4 parts of coupling agent, 0.1 to 0.5 part of defoaming agent and 0.3 to 0.5 part of catalyst; the heat-conducting structural adhesive has the advantages that the heat-conducting property of the heat-conducting structural adhesive is improved, and the tensile strength is kept.

Disclosed in the present invention are a packaging film, a manufacturing method therefor, and a filter chip packaging method. Raw materials for the packaging method comprise: 20-24 parts by mass of silicon dioxide, 24-26 parts by mass of aliphatic polyurethane acrylate, 12-15 parts by mass of phenoxy resin, 5-13 parts by mass of a flexible liquid epoxy resin, 10 parts by mass of bisphenol F epoxy resin, 17-19 parts by mass of a curing agent, 2-5 parts by mass of a photoinitiator and 0.4-0.8 part by mass of an accelerant, the curing agent being prepared by compounding a bisphenol F benzoxazine curing agent and a dicyandiamide curing agent according to a mass ratio of 10:(7-9). The packaging film of the present invention has excellent flexibility and adhesive force, low moisture absorption rate and high heat resistance, and therefore is particularly suitable for packaging of filter chips.

The invention relates to the technical field of adhesives, in particular to MS resin-epoxy resin two-component hybrid glue and a preparation method thereof.The MS resin-epoxy resin two-component hybrid glue comprises a component A and a component B. The component A comprises silane modified polyether resin, polysiloxane-polyether epoxy block copolymer, a silane coupling agent, an antioxidant, an epoxy resin curing accelerator, first filler and a first catalyst; the component B comprises epoxy resin, a silane coupling agent, a plasticizer, a silane modified polyether resin curing accelerator, a second filler and a second catalyst; and the silane coupling agent is a compound of KH-560 and KH-792. According to the MS resin-epoxy resin two-component hybrid glue, the polysiloxane-polyether epoxy block copolymer is added, and the bifunctional silane coupling agent is adopted, so that the compatibility of the MS resin-epoxy resin two-component hybrid glue is improved, effective chemical crosslinking is formed between the MS resin component and the epoxy resin component, and the performance of the two-component hybrid glue is improved.

The invention discloses an underwater sealing structural adhesive as well as a preparation method and application thereof. The underwater sealing structural adhesive is prepared from 20 to 30 parts of organic silicon modified epoxy resin, 10 to 20 parts of silane-terminated polyester, 10 to 15 parts of polyether polyol, 50.5 to 60.5 parts of filler, 15 to 25 parts of talcum powder, 1 part of fumed silica and 4.5 to 5.5 parts of titanium dioxide. The preparation method comprises the following steps: weighing the organic silicon modified epoxy resin, the silane-terminated polyester, the polyether polyol, the filler, the talcum powder, the fumed silica and the titanium dioxide in proportion, sequentially adding into a stirrer, stirring for 1-3 hours, uniformly stirring to obtain the underwater sealing structural adhesive, and packaging the discharged underwater sealing structural adhesive into a rubber tube. The application is to bond a joint in a water channel without cutting off water. According to the technical scheme provided by the invention, the technical problem that the bonding effect is poor when new and old geomembranes or concrete structures or the geomembranes and the concrete structures are bonded underwater is solved.

The invention belongs to the technical field of natural adhesives, and discloses a natural adhesive with coconut pectin biomass as a raw material and a preparation method thereof.The preparation method comprises the steps that coconut shell fibers, coconut meat residues and other coconut fruit waste are utilized, and active polysaccharide and vegetable protein are obtained through an oxidized saline water extraction technology; the composite adhesive is formed by self-assembly crosslinking of the modified starch, the polyvinyl alcohol, the modified starch and the epoxidized glyceryl polyether. The adhesive is high in bonding strength, the initial strength of 80% or above can still be kept after the adhesive is soaked in water, the content of VOCs is lower than 10 g / L, and the environment-friendly requirement is met. The problem of environmental pollution of a traditional petroleum-based adhesive is solved, meanwhile, the technical defects that an existing bio-based adhesive is insufficient in strength and poor in water resistance are overcome, a green and environment-friendly adhesive substitute is provided for the wood industry, and the production cost is remarkably reduced.

A curable thermally conductive adhesive comprising a curable binder and a thermally conductive filler, wherein a cured product of the curable thermally conductive adhesive has a tensile storage elastic modulus of 2.0×108 Pa or less and a tanδ of 0.05 or more and 0.6 or less measured by dynamic viscoelasticity measurement at 10 Hz at 25°C.