1925 results about "Tackifier" patented technology

An absorbent article comprising a hotmelt adhesive comprising a styrene-block-copolymer (SBC), an amorphous polyolefin and optionally a tackifier. The SBC is preferably selected from the group of SEBS, SEPS and SEP polymers, and the amorphous polyolefin is preferably a propylene-based copolymer (PbP) having a weight-average molecular weight Mw of less than 10 000 g / mol. The hotmelt adhesive bonds two components of the article, for example SAP particles on the core wrap.

The invention discloses a mechanical polishing pad with a CMP composite groove and a preparation method of the mechanical polishing pad, and belongs to the technical field of polishing pads. The mechanical polishing pad comprises a polishing layer, a bonding layer and a substrate layer, and the polishing layer is bonded to the surface of the substrate layer through the bonding layer; the bonding layer is prepared from the following raw materials in parts by mass: 47 to 50 parts of EVA resin, 35 to 36 parts of tackifier, 8 to 12 parts of paraffin, 3 to 7 parts of filler and 0.5 to 2 parts of antioxidant. The mechanical polishing pad solves the problem that when an existing mechanical polishing pad is used, a groove of the mechanical polishing pad cannot well convey polishing liquid, the mechanical polishing pad cannot be well supported, and the mechanical polishing effect is poor. The polishing liquid conveying performance of the mechanical polishing pad can be improved, the mechanical polishing pad is prevented from deforming during polishing, it can be guaranteed that polishing pressure is evenly transmitted, the size stability and the compression permanent deformation resistance of the mechanical polishing pad can be improved, and the mechanical polishing effect can be effectively improved.

The invention discloses a concrete composite tackifier and a preparation method thereof, and relates to the technical field of concrete. When the concrete composite tackifier is prepared, firstly, polyacrylic resin obtained by polymerizing acrylic acid, methyl methacrylate, acrylamide and vinyl diphenylphosphine reacts with modified porphyrin, and then sulfonation is performed to obtain modified polyacrylic resin; the preparation method comprises the following steps: firstly, pre-treating silica fume with vinyltrimethoxysilane, then carrying out a reaction on the silica fume pre-treated with vinyltrimethoxysilane, tetravinyltetramethylcyclotetrasiloxane and vinylboronic acid pinacol ester to obtain modified silica fume, and finally, mixing polyacrylic resin and the modified silica fume to obtain the concrete composite tackifier. The concrete composite tackifier prepared by the invention has good working performance and antibacterial property.

The invention provides a low-viscosity high-thermal-conductivity organic silicon bonding pouring sealant and a preparation method thereof, the organic silicon bonding pouring sealant comprises a component A and a component B, the component A is prepared from a basic silica gel polymer, a thermal conductive filler, an anti-settling agent, a cross-linking agent and a tackifier M, and the component B is prepared from a basic silica gel polymer, a thermal conductive filler, an anti-settling agent, a catalyst, an inhibitor and a tackifier N; the tackifier M has at least two alkoxy groups, and the tackifier N is silylated maleic anhydride. The two tackifiers are matched, the heat conductivity coefficient of the prepared high-heat-conductivity pouring sealant is 2.0 W / (m.k) or above, and the prepared high-heat-conductivity pouring sealant is low in viscosity, so that the prepared high-heat-conductivity pouring sealant is good in flowability and has a very good bonding effect on base materials such as Al, PVC, PMMA and a PCB.

A high-strength stainless steel waterproof coiled material and a method for preparing same. The high-strength stainless steel waterproof coiled material sequentially comprises, from bottom to top, a stainless steel material, a first bonding layer, a waterproof layer, a second bonding layer, and an isolation film. The raw materials of the first bonding layer comprise the following components in parts by weight: 80-90 parts of butyl rubber, 10-30 parts of polypropylene, 20-30 parts of filler A, 12-18 parts of a tackifier, 0.2-0.5 part of a coupling agent, 8-12 parts of a softener, 1-2 parts of stannous chloride, 1-3 parts of a vulcanizing agent, and 2-3 parts of an accelerant. The tackifier is composed of polyurethane and o-ethoxyphenyl isocyanate. The first bonding layer and the second bonding layer have the same raw materials. The high-strength stainless steel waterproof coiled material solves the problems in existing stainless steel waterproof coiled materials that bonding and stripping strength are low, and bonding and stripping strength decline significantly after soaking in water.

The present invention relates to the field of heat-conducting interface materials, and in particular relates to single-component high-thermal-conductivity silicone mud and a preparation method therefor. The single-component high-thermal-conductivity silicone mud is composed of the following components: 100 parts of silicone oil, 10-50 parts of an MQ silicone resin, and 1500-2600 parts of a high-thermal-conductivity powder. The silicone mud further comprises 0.3-10 parts of a chain extender, 0.5-5 parts of a cross-linking agent, 1-10 parts of a catalyst, 5-20 parts of a tackifier, 5-15 parts of a plasticizer, and 1-5 parts of a pigment. In the present application, by cooperating both the silicone oil and the MQ silicone resin with a heat-conducting filler and other components, the heat-conducting silicone mud, which has good plasticity, high heat conductivity, low oil permeability and low high-and-low-temperature plastic deformability, can be obtained. Moreover, by further regulating and controlling the structures of the silicone oil and the MQ resin and the reaction conditions in the preparation process, the comprehensive performance of the silicone mud is further improved.

The invention relates to a two-component polyurethane elastic structural adhesive suitable for bonding a plastic base material of an automobile spoiler. The two-component polyurethane elastic structural adhesive consists of a component A and a component B in a volume ratio of (0.8-1.2): 1, the component A comprises 10-30 parts by weight of liquid polybutadiene polyol; 10 to 30 parts by weight of polyester polyol; 1-10 parts by weight of modified castor oil polyol; 1-10 parts by weight of a chain extender; 20-40 parts by weight of a filler; 1-10 parts by weight of a molecular sieve; 1-5 parts by weight of white carbon black; 0.2 to 2 parts by weight of a tackifier; the component B comprises the following components in parts by weight: 20-40 parts of isocyanate; 20 to 40 parts by weight of liquid polybutadiene polyol; 10-20 parts by weight of a plasticizer; 20-40 parts by weight of a filler; 1-5 parts by weight of white carbon black; 0.2 to 2 parts by weight of an anti-aging agent; 0.2 to 2 parts by weight of a water absorbent; and 0.2 to 2 parts by weight of carbon black. The two-component polyurethane elastic structural adhesive provided by the invention has low hardness and high elongation at break, can realize high adhesive force when SMC / PP and other base materials are only subjected to surface flame treatment, has a bonding failure mode of cohesive failure, and is especially suitable for bonding of automobile spoiler plastic base materials.

The invention discloses a load type regenerated asphalt mixture composite regenerant, which is composed of a porous carrier and a regenerant loaded in the pore channel of the carrier, and the mass ratio of the porous carrier to the regenerant is 5: 1. The regenerant is prepared from the following raw materials in parts by weight: 90 to 110 parts of furfural extract oil, 5 to 10 parts of triallyl isocyanurate, 2 to 6 parts of triethoxysilane, 4 to 10 parts of a three-dimensional porous material, 3 to 8 parts of a penetrant, 20 to 30 parts of toluene-2, 4-diisocyanate, 10 to 20 parts of hydroxyl-terminated polybutadiene, 5 to 12 parts of a plasticizer and 5 to 10 parts of a tackifier. The regenerant is loaded in pores of the porous carrier, so that the deformation resistance of asphalt mortar can be improved, the aging resistance of asphalt can be effectively improved, and the regenerant can improve the high-temperature stability, low-temperature stability and water stability of the thermally-regenerated asphalt mixture and can improve the skid resistance and sound absorption performance of the thermally-regenerated asphalt mixture. Meanwhile, the economic cost is saved.

The invention discloses a lithium battery negative electrode binder of modified carboxymethyl cellulose lithium, and belongs to the technical field of lithium ion batteries, and the modified carboxymethyl cellulose lithium is prepared by grafting carboxymethyl cellulose with an acrylic monomer and a sulfonic monomer, acidifying, lithiating, cross-linking with cystine, and carrying out surface modification with 2-(3, 4-dihydroxyphenyl) ethylamine. The preparation method comprises the following steps: grafting an acrylic monomer and a sulfonic monomer copolymerization long chain on a main chain of carboxymethyl cellulose, introducing additional carboxyl and sulfonic groups, and introducing cystine with a disulfide bond as a cross-linking agent and 2-(3, 4-dihydroxyphenyl) ethylamine with a catechol group as a tackifier to prepare modified carboxymethyl cellulose lithium; the lithium content of the obtained modified lithium carboxymethyl cellulose is higher than that of common lithium carboxymethyl cellulose, the adhesive property is enhanced, the toughness is improved, and the cycle performance is enhanced.

The invention discloses a waterproof sealing flexible hot melt adhesive and a preparation method thereof, and relates to the field of hot melt adhesives. The waterproof sealing flexible hot melt adhesive is prepared from 65 to 70 parts of EVA (Ethylene Vinyl Acetate) resin, 20 to 22 parts of POE (Polyolefin Elastomer), 5.5 to 6.5 parts of maleic anhydride grafted POE, 4.2 to 4.8 parts of SIS (Styrene Isoprene Styrene) block copolymer, 1.2 to 1.8 parts of maleic anhydride grafted SIS block copolymer, 15 to 20 parts of tackifier, 4 to 6 parts of viscosity modifier and 1 to 1.5 parts of antioxidant. According to the hot melt adhesive, the EVA resin, the POE polyolefin elastomer and the SIS block copolymer are matched, and the compatibility of the EVA resin, the POE polyolefin elastomer and the SIS block copolymer is improved through the maleic anhydride grafted POE polyolefin elastomer and the maleic anhydride grafted SIS block copolymer, so that the hot melt adhesive with a good bonding effect on a film-coated paper box and a good low-temperature-resistant effect can be obtained; and the bonding durability of the film-coated paper box in a humid environment or a low-temperature environment can be effectively improved.

The invention relates to a degradable acrylic pressure-sensitive adhesive and a preparation method thereof, and belongs to the technical field of acrylic pressure-sensitive adhesives. The degradable acrylic pressure-sensitive adhesive provided by the invention is prepared from the following raw materials: polylactic acid, butyl acrylate, 2-ethylhexyl acrylate, benzoyl peroxide, ethyl acetate, temperature-sensitive microcapsules, a tackifier, an antioxidant and a stabilizer. The degradable acrylic pressure-sensitive adhesive disclosed by the invention is prepared from a plurality of components, and the polylactic acid not only endows the pressure-sensitive adhesive with good biodegradability, but also provides proper mechanical strength and flexibility; butyl acrylate and 2-ethylhexyl acrylate are combined, so that the pressure-sensitive adhesive has excellent adhesion and weather resistance; due to the introduction of the temperature-sensitive microcapsules, the tackifier, the antioxidant and the stabilizer, the performance of the pressure-sensitive adhesive is further improved, and the degradability of the pressure-sensitive adhesive is improved.

The invention discloses a hot and moisture dual-cured organic silicon sealant and a preparation method thereof. The organic silicon sealant is prepared from the following raw materials: hydroxyl-terminated methyl vinyl polysiloxane, alkoxy-terminated polydimethylsiloxane, active nano calcium carbonate, fumed silica, a cross-linking agent, a catalyst and a tackifier. The organic silicon sealant organically combines the advantages of a condensation type curing system and an addition type curing system, can be quickly positioned and cured, is high in strength, good in adhesion, excellent in temperature resistance and long in storage life after being cured, and can be used for various occasions needing quick positioning and assembling.

The invention relates to the technical field of high polymer materials, in particular to a heat-resistant packaging material, a preparation method and application of the heat-resistant packaging material in solar cells. The preparation method comprises the following steps: compounding azide polyurethane acrylate and propargyl oxybenzophenone by utilizing a click chemical reaction to obtain ultraviolet absorption type polyurethane acrylate; the preparation method comprises the following steps: mixing an ethylene-vinyl acetate copolymer, ultraviolet absorption type polyurethane acrylate, an alkenyl zinc oxide / silicon carbide composite material, nano aluminum oxide, a tackifier gamma-glycidyl ether oxypropyl trimethoxy silane, an antioxidant and a photoinitiator, casting to form a film, cooling and drafting to obtain the heat-resistant packaging material. The material has heat-resistant heat-conducting property and ultraviolet aging resistance, is good in adhesive property, and can be used as a packaging material to be applied to solar cell packaging.

An object of the present invention is to provide a pressure-sensitive adhesive composition capable of firmly bonding members when no voltage is applied and forming a pressure-sensitive adhesive layer whose adhesive force is sufficiently reduced when a voltage is applied, a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer formed of the pressure-sensitive adhesive composition, and a bonded body. The present invention relates to a pressure-sensitive adhesive composition containing a polymer, an ionic liquid, and a tackifier having a hydroxyl value of 150 mgKOH / g or less, a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer formed of the pressure-sensitive adhesive composition, and a bonded body.

The invention discloses a high-temperature-resistant low-damage high-density solid-free well killing fluid which comprises 50-80 parts of water, 10-40 parts of calcium chloride, 10-40 parts of calcium bromide, 0.5-2 parts of a temperature-resistant tackifier, 1-3 parts of a temperature-resistant filtrate reducer, 0.5-2 parts of a high-temperature stabilizer, 0.5-3 parts of a high-temperature corrosion inhibitor, 0.5-2 parts of a salt crystallization inhibitor and 0.1-1 part of a waterproof locking agent. The technical problems that the saline water base fluid is unstable in density in a high-temperature environment, a reservoir is damaged, and a shaft is corroded are solved. The invention also discloses a preparation method of the high-temperature-resistant low-damage high-density solid-free kill fluid, which comprises the following steps: adding the water into a stirring kettle, then adding the calcium chloride, the temperature-resistant filtrate reducer, the temperature-resistant tackifier and the high-temperature corrosion inhibitor, uniformly stirring, and supplementing the calcium bromide during stirring to obtain a mixture; a salt crystallization inhibitor is injected into the stirring kettle, meanwhile, a high-temperature stabilizer is added, the stirring kettle is heated for full stirring, and the well killing fluid is obtained.

The invention relates to the technical field of adhesives, and particularly discloses an electrogenerated viscosity-reducing adhesive as well as a preparation method and application thereof. The electrogenerated viscosity-reducing glue is prepared from the following raw materials in parts by weight: 100 to 150 parts of polyacrylate, 30 to 50 parts of polyvinyl alcohol, 20 to 40 parts of functional monomer, 1 to 5 parts of conductive agent, 2 to 6 parts of alkenyl-containing ionic liquid, 1 to 5 parts of lithium salt, 1 to 5 parts of tackifier, 1 to 2 parts of dispersant, 0.1 to 2 parts of initiator and 60 to 100 parts of organic solvent, and the conductive agent is obtained by synergistically modifying hydroxylated carbon nanotubes with 2-thiophenecarboxylic acid and 2-picolinic acid. The electrogenerated viscosity-reducing adhesive is applied to the electrogenerated viscosity-reducing adhesive tape, and the obtained adhesive tape is excellent in peel strength and shear strength, high in power-on viscosity-reducing efficiency, free of adhesive residue during peeling, reusable and wide in application prospect.

The invention discloses a moxidectin pouring solution and a preparation method thereof, and belongs to the technical field of veterinary drug preparations. Every 500 ml of the moxidectin pouring solution comprises 0.1%-10% of moxidectin, an antioxidant, a penetrating agent, a tackifier, a cosolvent, a coloring agent and the balance of a fat solvent, and preferably, soybean oil is used as the fat solvent. The preparation method comprises the following steps: mixing and dissolving the components according to a specific sequence, filtering and sub-packaging. The moxidectin pouring solution disclosed by the invention has the advantages of low cost, convenience in preparation, good quality stability, no influence on impurity detection and the like, effectively solves a plurality of problems of the moxidectin pouring solution in the prior art, and has a good application prospect.

The invention relates to the technical field of EVA (Ethylene Vinyl Acetate) hot melt adhesives, and discloses a hot melt adhesive, a preparation method thereof and an application of the hot melt adhesive in a card protecting film. The preparation method comprises the following steps: adding EVA resin, EVA-based polyurethane and an antioxidant into a reaction kettle, heating, stirring and melting, then adding a plasticizer, an auxiliary agent and a tackifier, and cooling to obtain the hot melt adhesive. The EVA-based polyurethane contains an EVA molecular chain, so that the polyurethane and EVA resin have better compatibility, a better toughening effect is achieved, the shear strength and the elongation at break of the hot melt adhesive are improved, the EVA-based polyurethane contains a hydrophobic fluorine-containing alkyl chain, the hydrophobicity of the polyurethane is improved, the hydrophobicity of the hot melt adhesive is improved, and the hot melt adhesive has a good application prospect. The water absorption rate is reduced, and better water resistance is shown. Good practical application is realized in the aspects of card protecting films and the like.

The invention discloses a bio-based flexible cementing material and a cold-mix asphalt mixture, and relates to the field of adhesives. The bio-based flexible cementing material comprises 80-85 wt% of a component A and 15-20 wt% of a component B, the component A comprises bio-based polyol, natural asphalt, natural rubber, a tackifier and a bio-based plasticizer according to a weight ratio of (160-180): (45-55): (75-85): (140-160): (380-410), and the component B is an isocyanate cross-linking agent. The bio-based flexible cementing material is used as a cementing material of a cold-mixed asphalt mixture, can be directly constructed at low temperature or normal temperature, does not need to be heated to improve the flowability, is convenient to construct, can form a stable skeleton structure through crosslinking, and can form a stable structure under the cooperation of natural rubber and natural asphalt. The bio-based flexible cementing material has both high temperature resistance and low temperature resistance, and the stability of a road structure can be improved.

The invention relates to the technical field of solder paste, in particular to halogen-free soldering flux for solder paste and a preparation method of the halogen-free soldering flux. The halogen-free soldering flux for the solder paste comprises the following raw materials in parts by mass: 20-40 parts of hydrogenated rosin, 1-5 parts of maleic anhydride, 0.1-0.4 part of p-toluenesulfonic acid, 1-5 parts of activated mesoporous silica, 10-20 parts of a composite organic acid active agent, 5-10 parts of a thixotropic agent, 1-3 parts of a tackifier, 1-2 parts of a pH regulator, 1-2 parts of a surfactant, 1-2 parts of a chelating agent, 1-2 parts of an antioxidant and 50-80 parts of an organic solvent. Through the innovative component design and the preparation process, the technical contradiction existing in the field of halogen-free scaling powder for a long time is effectively solved, and an ideal material solution is provided for high-reliability electronic packaging.

The invention discloses two-component addition type low-density liquid foaming silicone rubber and a preparation method thereof, and belongs to the technical field of silicone rubber preparation. Comprising a component A and a component B, the component A is prepared from the following components in parts by weight: 50 to 70 parts of vinyl terminated polysiloxane, 10 to 20 parts of vinyl hydroxyl silicone oil, 0.5 to 2 parts of platinum catalyst, 15 to 25 parts of HGM (at) PN-rGO / APP and 3 to 8 parts of methyl vinyl MQ resin; the component B is prepared from the following components in parts by weight: 50 to 60 parts of vinyl-terminated polysiloxane, 8 to 15 parts of hydrogen-terminated hydrogen-containing silicone oil, 10 to 20 parts of methyl-terminated hydrogen-containing silicone oil, 5 to 10 parts of hydroxyl-terminated silicone oil, 0.002 to 0.01 part of an inhibitor, 10 to 20 parts of fumed silica and 1 to 3 parts of a tackifier. The synergistic components in the HGM-coated PN-rGO / APP can greatly improve the flame retardant property of the silicone rubber, improve the compression strength and reduce the heat release rate at the same time.

The invention provides an anaerobic adhesive composition, an anaerobic adhesive and a preparation method of the anaerobic adhesive. The anaerobic adhesive composition comprises a main agent and a promoting primer, and the main agent comprises the following components in parts by weight: 30-70 parts of an acrylate monomer, 5-20 parts of an acrylate oligomer, 5-20 parts of a tackifier and 1-10 parts of an amide monomer; the accelerating primer is prepared from the following components in parts by weight: 0.01 to 30 parts of phosphorus-containing acrylate monomer and 0.001 to 1 part of reaction accelerator; wherein the reaction accelerant is an organic compound containing transition metal. According to the anaerobic adhesive composition, the curing degree of the anaerobic adhesive can reach the standard in a short time (within 3 min), and high drawing strength and an excellent damage form are achieved, so that the bonding requirement of a silicon steel sheet of a motor iron core is met; and the anaerobic adhesive has the advantages of high temperature resistance, no cracking, high drawing strength, vibration resistance, good oil-resistant stability and the like.

The invention provides a preparation method of organic silicon hybridized acrylate pressure-sensitive glue and a pressure-sensitive adhesive tape, and relates to the technical field of adhesives. (methyl) acrylate organic silicon monomers with higher copolymerization reaction activity with acrylate and other (methyl) acrylate soft monomers, hard monomers, functional monomers and the like are subjected to copolymerization reaction; introducing a monomer containing an organic silicon side chain to a polymer main chain to obtain an organic silicon hybridized acrylate main glue solution; and mixing the organic silicon hybridized acrylate main glue solution with an organic silicon flexible cross-linking agent, a tackifier, an antioxidant and other additives to obtain the organic silicon hybridized acrylate pressure-sensitive glue. The main component of the adhesive layer of the pressure-sensitive adhesive tape prepared from the organosilicone hybridized acrylate pressure-sensitive adhesive is an acrylate polymer into which a large proportion of organosilicone groups are introduced, so that the wettability of the adhesive layer of the pressure-sensitive adhesive tape to a silicon-based substrate is better, and the adhesion of the adhesive tape to the substrate is improved.

The invention discloses pre-swelling multipolymer high-viscoelastic asphalt modified particles and a preparation method thereof, and belongs to the technical field of road engineering materials. The pre-swelling multipolymer high-viscoelastic asphalt modified particles are prepared from the following components in parts by weight: 10 to 40 parts of desulfurized waste tire rubber powder, 20 to 30 parts of styrene-butadiene-styrene block copolymer, 15 to 20 parts of adhesive, 10 to 17 parts of compatilizer, 13 to 18 parts of tackifier and 2 to 5 parts of auxiliary agent. In the pre-swelling multi-polymer high-viscoelastic asphalt modified particle provided by the invention, the desulfurized waste tire rubber powder is pre-swelled in the compatilizer, and the SBS develops in advance in the asphalt adhesive to form a continuous phase system which is not easy to deform and has a certain degree of elastic property with asphalt; according to the preparation method, high-volume desulfurized waste tire rubber powder and SBS in the prepared modified particles can be stably dispersed in matrix asphalt, the performance is rapidly improved, the construction workability is improved, and the modified particles have the advantages of good viscoelasticity, adjustment and optimization as required, stable system, high economic benefit and the like.

The invention discloses a self-healing polyolefin packaging adhesive film and a preparation method thereof. The self-healing polyolefin packaging adhesive film is prepared from the following raw materials in parts by mass: a polyolefin copolymer, a self-healing functional monomer, a cross-linking agent, an antioxidant, a light stabilizer and a tackifier. According to the packaging adhesive film, dynamic borate bonds with reversible properties are introduced into a polyolefin adhesive film material to construct a topologically rearranged cross-linked network structure, so that the packaging adhesive film for the photovoltaic module is endowed with excellent adhesion performance and self-healing efficiency.

The invention provides a marine antifouling coating based on fluorine-silicon low-surface-energy resin. The marine antifouling coating comprises a fluorine-silicon low-surface-energy resin coating (1), an organic silicon epoxy floating coating (2) and an epoxy base coating (3), a ketoxime-removing curing agent is arranged between the fluorine-silicon low-surface-energy resin coating and the organic silicon epoxy floating coating; wherein the fluorine-silicon low-surface-energy resin coating is an antifouling coating; the epoxy prime coat layer is an epoxy resin polymer; the organic silicon epoxy floating coat adopts an organic silicon modified epoxy coating to form a coating system matched with the epoxy prime coat and the fluorosilicone low-surface-energy resin coating; the organic silicon modified epoxy coating contains a siloxy group and an epoxy group, so that the combination of the organic silicon epoxy floating coat coating, the epoxy prime coat coating and the fluorine-silicon low-surface-energy resin coating is realized; the deketoxime curing agent takes KH550, KH570, methyl diacetylmonoxime silane and ethyl diacetylmonoxime silane as raw materials, and the raw materials react with part of water under a heating condition, so that the multifunctional curing / tackifying agent is formed.

The invention discloses a concrete viscosity modified material and a preparation method thereof, and belongs to the technical field of building materials. The concrete viscosity modifying material comprises the following components in percentage by mass: 65%-85% of a mineral admixture, 15%-35% of a modified tackifier, 1%-5% of an inorganic thixotropic agent and 1%-5% of an organic thixotropic agent, wherein the modified tackifier is obtained by taking rice hull ash obtained by calcining rice hulls, pretreated biogel and a silane coupling agent as raw materials, and performing dispersion, standing and spray drying. The modified tackifier is prepared from the rice hull ash, the biological glue and the silane coupling agent, then the mineral admixture, the inorganic thixotropic agent and the organic thixotropic agent which have high-quality thixotropic performance are compounded, the finally prepared concrete viscosity modified material has excellent thixotropy, the working performance of concrete can be improved, and meanwhile, the concrete viscosity is improved. The problems of bleeding, segregation and the like of mortar and concrete are effectively solved, and the application value is high.

According to the technical scheme, a multifunctional reactive flame retardant needs to be prepared firstly, the synthesized multifunctional reactive flame retardant tackifier is more environmentally friendly compared with halogen, phosphate ester and modified substances of the halogen, the phosphate ester and the modified substances of the halogen, the phosphate ester and the modified substances of the halogen, the phosphate ester and the modified substances of the halogen, the phosphate ester and the modified substances of the halogen, the phosphate ester and the modified substances of the halogen, the phosphate ester and the modified substances are added into the prepared sealant to prepare a finished product. And the flame-retardant V-0 level can be reached under the condition of a small addition amount. The multi-branch structure can form physical crosslinking on an organic interface and an inorganic interface and form chemical crosslinking inside, so that the cohesion strength and the interface strength of a cured product are greatly improved. And the extrusion rate, density, hardness, bonding strength, volume resistivity and other performance indexes all meet high requirements in the fields of new energy automobiles and the like.

The present disclosure is to provide a water-based hot melt adhesive for healthcare packaging. The water-based hot melt adhesive includes 100 weight parts of water-based polyolefin resin; 40 to 85 weight parts of wax particles; and 25 to 85 parts by weight of tackifier particles; wherein a total weight of the wax particles and the tackifier particles is from 45 wt % to 60 wt % of a total weight of the water-based hot melt adhesive. The coating layer coated by the water-based hot melt adhesive of the present disclosure on the healthcare packaging substrate has great gas-permeability, and satisfied seal strength and peelability after sealing with the periphery part of a flexible sheet or a blister container.

The invention relates to a film-forming filtrate reducer and a preparation method thereof, workover fluid and a workover method, and relates to the field of workover, the film-forming filtrate reducer comprises an oil phase, an emulsifier, acrylamide, N-vinyl pyrrolidone, 2-acrylamido-2-methylpropanesulfonic acid, hexadecyl dimethyl allyl ammonium chloride, water and an initiator; the workover fluid comprises water, a tackifier, a plugging agent, an acid-soluble temporary plugging agent, an interface modifier, a corrosion inhibitor, a weighting agent and the film-forming filtrate reducer. According to the film-forming filtrate reducer provided by the invention, specific acrylamide, N-vinyl pyrrolidone, acrylamido-2-methylpropanesulfonic acid and hexadecyl dimethyl allyl ammonium chloride are subjected to reverse emulsion polymerization to obtain a polymer, and the polymer is greatly adsorbed on the surface of a filter cake under the action of high temperature and high pressure to form a high-toughness polymeric film; the filter loss is reduced; the temperature resistance of the workover fluid is larger than or equal to 180 DEG C, the pressure-bearing plugging capacity of the workover fluid to a crack core is larger than 10 MPa, and the permeability recovery value is larger than or equal to 92%.