260results about How to "Extended opening hours" patented technology

The invention relates to a building material, and in particular relates to an exterior wall color surface decoration mortar and a preparation method thereof. The exterior wall color surface decoration mortar comprises the following raw materials by weight: 20%-30% of white cement, 50%-60% of quartz sand, 0.1%-0.5% of chopped fiber, 10%-20% of heavy calcium carbonate, 0.2%-1% of latex powder, 0.3%-0.5% of cellulose ether, 1%-5% of an inorganic pigment, 0.2%-0.4% of a water repellent, 5%-10% of coal powder ash, 0.1%-0.15% of a defoaming agent, 1%-3% of metakaolin, 0.2%-0.5% of a thixotropic lubricant and 1%-2% of a water reducing agent. The exterior wall color surface decoration mortar has the advantages of crack resistance, weather resistance, good ultraviolet resistance, permanent and uniform color, good whiskering resistance, and the like, can be well combined with various inorganic base layer materials, is good in coating density, and can be widely used in the building fields such as exterior wall decoration and the like.

The invention provides a real stone paint. The real stone paint comprises, by weight, 90-130 parts of water, 2-5 parts of hydroxyethyl cellulose, 2-5 parts of a dispersant, 1-3 parts of a wetting agent, 4-8 parts of an antifoaming agent, 2-3 parts of an antiseptic, 100-150 parts of an emulsion, 5-12 parts of a film forming assistant, 1-3 parts of a pH adjusting agent, 5-20 parts of an antifreeze agent and 400-900 parts of a color sand component, wherein the color sand component comprises two or more than two natural stone flours with similar color. The invention further provides a preparation method of the real stone paint. The natural stone flowers with similar color in raw materials are blended in the embodiment of the invention to balance the color difference of all the natural stone flours, so even the color of one of the natural stone flours changes, the color difference of real stone paint products in batches is very small under the contrast of other natural stone flours with similar color, thereby the color difference change of the real stone paint is well controlled.

The invention relates to a method for preparing polyurethane hot melt adhesive capable of achieving quick positioning. The preparing method includes the steps that 1, reactive tackifier and hydrogenated bisphenol A are added into a reaction still, dehydration is conducted for 2 hours at the temperature of 110 DEG C and the pressure intensity of -0.095 MPa, the mixture is cooled to 70 DEG C, a catalyst and polyisocyanate are added, stirring is conducted at the rotation speed of 400-700 r / min, a reaction is conducted for 1-3 hours at the temperature of 70 DEG C-80 DEG C, then a silane modifier is added, a reaction is conducted for 2-5 hours at the temperature of 70 DEG C-80 DEG C, and modified prepolymer at the sending end of silane is obtained; 2, dehydration is conducted on polyester polyol, polyether polyol and acrylic resin for 2 hours at the temperature of 120 DEG C and the pressure intensity of -0.095 MPa, after dehydration is conducted, the polyisocyanate is added, stirring is conducted at the rotation speed of 400-700 r / min, a reaction is conducted for 1-3 hours at the temperature of 100 DEG C-120 DEG C, then the prepared modified prepolymer at the sending end of the silane, antioxygen and the catalyst are added, the temperature is raised to 110 DEG C, vacuumizing is conducted till the pressure intensity is below -0.095 MPa, air bubble removing is conducted for 30 minutes, discharging and sealed packing are conducted, and the polyurethane hot melt adhesive capable of achieving quick positioning is obtained.

The invention discloses a high-initial-adhesion-strength moisture-curable polyurethane hot melt adhesive and a preparation method thereof. The adhesive is prepared from the following raw materials inparts by weight: 20-50 parts of polyether polyol, 10-40 parts of crystalline polyester polyol, 5-30 parts of liquid polyester polyol, 10-20 parts of polyisocyanate, 10-35 parts of thermoplastic acrylic resin, 2-15 parts of tackifying resin, 0.1-0.5 parts of a catalyst and 0.1-1 part of an antioxidant. The moisture-curable polyurethane hot melt adhesive provided by the invention has the advantagesof long opening time, high initial adhesion strength, high curing speed, higher final adhesion strength, favorable damp-heat resistance and favorable high / low-temperature impact resistance, and can achieve the goals of no pressure maintaining and high-efficiency production of electronic products.

The invention relates to a long-opening-time primer and a preparation method thereof. The primer is matched with a single-component moisture-curing polyurethane sealant. The primer comprises the following components in percentage by mass: 15-35% of silane terminated polymer, 2-10% of bonding accelerator, 0.1-2% of stabilizing agent, 1-10% of plasticizer, 3-15% of colorant, 0.3-1.5% of dispersing agent, 0.1-2.5% of antioxidant, 0.1-2.5% of ultraviolet absorbent, 0.1-2.5% of light stabilizer and 30-70% of solvent. The primer can be used for enhancing the bonding stability of the single-component polyurethane adhesive when being used for glass assembly and elastic bonding. The system is free of isocyanate, lowers the reaction speed, prolongs the opening time of the primer, has favorable adhesion with ink glass, common primers and finish coats, and enhances the medium resistance and bonding performance of the silane terminated polymer.

The invention discloses an JS elastic waterproof coating consisting of the following components in percentage by weight: 20-30% of a liquid material and 70-80% of a powder material, wherein the liquid material comprises the following components in percentage by weight: 80-95% of a pure acrylic emulsion, 4.9-19% of water, 0-2% of a water reducing agent, 0.1-0.2% of a preservative and 0-1% of a defoaming agent; the powder material comprises the following components in percentage by weight: 40-65% of Portland cement, 15-30% of quartz sand, 10-30% of quartz powder and 0-0.5% of cellulose. The waterproof coating disclosed by the invention has excellent waterproof performance, good weather resistance and gas permeability, high binding strength and excellent construction process, and can be used for repairing cracks.

The invention provides a planting method of tree-shaped honeysuckles. The planting method comprises selection of cultivated fields, sorting of the cultivated fields, planting time, the planting method, field management, tree form cultivation, pest control, reasonable using of pesticides and harvest-machining-drying. Annual seedlings which do not carry with viruses and are strong in disease resistance capacity are rapidly propagated at a high temperature and high humidity condition. Through the field planting method of scientific pruning, fertilization, and the like, the half-lignification tree-shaped honeysuckles are cultivated. Through the method, honeysuckle blossom of 4-5 stubbles is achieved, flower bud blooming time is long, yield is high, yield dry goods per tree are 400-500 grams averagely, survival rate of nursery stocks is 98%, the tree age is 30 to 50 years, and developed root systems are ideal nursery stocks for returning farmlands to forests.

The invention provides a method for detecting an alkali burnout resistance of a priming coat, which includes the following steps of applying putty on an experimental plate in batch, brushing and coating the priming coat after the putty is dried, brushing and coating a finishing coat after the priming coat is dried, and observing the oozy degree of white alkaline substances on the paint film surface of the finishing coat through naked eyes, wherein the drying steps of the putty, the priming coat and the finishing coat are performed under the conditions that the temperature is in a range from 35 DEG C to 45 DEG C and the relative humidity is 60-90%, and the pigment volume concentration of the finishing coat is 40-60%. According to the method for detecting the alkali burnout resistance of the priming coat, detection results can be observed in a short time, the development time of novel products is greatly saved, the work efficiency of the development of the novel products is increased, the development cost of the novel products is lowered, besides, the method is simple in operation and easy to implement.

The invention discloses a production technology for preparing premixed dry-mixed mortar from recycled aggregate. The production technology comprises the following steps that firstly, building waste is classified; secondly, waste concrete and waste sintered bricks are smashed to form the recycled aggregate; thirdly, the recycled aggregate is screened and classified according to the diameter specification and stored; fourthly, cement is taken and put into a cement metering bin for use, and additives are taken and put into corresponding additive metering bins, wherein the additives comprise a water-retaining agent, a water reducing agent, an air entraining agent, a thixotropic lubricating agent and an infiltration dispersing agent; fifthly, the materials in all the metering bins in the third step and the fourth step are metered according to proportions, discharged out of the bins and mixed, and the premixed dry-mixed mortar is formed. The production technology for preparing the premixed dry-mixed mortar from the recycled aggregate can reduce environment pollution while the high-performance premixed dry-mixed mortar is prepared.

The invention relates to surface mount adhesive for the surface mount technology and a preparation method of the surface mount adhesive. The surface mount adhesive is prepared by utilizing low-viscosity liquid epoxy resin, latent curing agent, curing accelerator, thixotropic agent, inorganic filler and pigment as raw materials, adding the raw materials into a stirring container and stirring uniformly in vacuum, and is obtained after discharging. The obtained surface mount adhesive has excellent high-temperature-resistant performance, fast in curing, fine in storage stability, high in humidity and strength, fine in thixotropy and free of wiredrawing and collapse and can be widely applied to the SMT (surface mount technology).

The invention relates to a water-based spray gel which comprises the following components in parts by weight: 40-60 parts of natural latexes, 20-60 parts of acrylic latexes, 40-100 parts of water-based tackifying resin, 20-60 parts of water-based polyurethane emulsions, 6-10 parts of hydrophilic aerosil, 1.2-3 parts of emulsifying agents, 0.3-0.5 part of defoaming agents, 1-3 parts of pH stabilizing agents and 0.2-0.5 part of rheology modifiers. The water-based polyurethane emulsions, the acrylic latexes and the natural latexes are compounded to form a stable system by adding the pH stabilizing agent, the emulsifying agents, the water-based aerosil and the like and regulating the addition sequences of the components, thus the water-based spray gel disclosed by the invention has the advantages of high solid content, fast drying, excellent property, long opening time, high adaptability on an adhesive material, incombustibility, no corrosion and low VOC, meets the requirement for environment friendliness, is convenient to operate by an operator and can be used for effectively preventing the generation chances of a fire and an occupational disease.

The invention relates to a preparation method of a light / humidity dual-curing polyurethane hot melt adhesive. The preparation method comprises the following steps of: introducing N2 into an HDI (hexamethylene diisocyanate) tripolymer, removing water vapor, carrying out a protective reaction, respectively adding a polymerization inhibitor and a catalyst and dropwisely adding HEA (hydroxyethyl acrylate); after dropwisely adding and reacting, adding polyisocyanate, and stirring uniformly to obtain 3HDI-HEA / polyisocyanate; heating and fusing polyalcohol and stirring for dehydration; adding the 3HDI-HEA / polyisocyanate and the catalyst; discharging after reacting, packaging the sample with an aluminum foil bag for standby application to obtain a light / humidity dual-curing polyurethane hot melt adhesive prepolymer; melting the prepolymer, and adding a photoinitiator, a polymerization inhibitor, a plasticizer and the catalyst, stirring uniformly in a molten state, rising the temperature and removing air bubbles; and ending stirring and discharging to obtain the light / humidity dual-curing polyurethane hot melt adhesive. The obtained hot melt adhesive has high initial bonding strength and final strength.

The invention discloses an environment-friendly solvent universal glue and a preparation method thereof. The best weight ratio of the universal glue is 9% of starburst SBS thermoplastic styrene-butadiene rubber, 2% of linear SBS thermoplastic styrene-butadiene rubber, 7% of rosin, 9.5% of hydrogenated rosin, 4% of C9 petroleum resin, 6% of a tackifying resin, 15% of No. 6 extraction solvent oil, 30% of methylal, 15% of methyl acetate, 0.2% of a wetting agent, 0.8% of an anti-aging agent, 0.5% of an antioxidant and 1.0% of a softening agent. The environment-friendly solvent universal glue has the comprehensive superiorities of low VOC, high solid content, no heavy metals, low smell, excellent initial adhesion, excellent cohesive strength, excellent permanent adhesion, excellent heat-resistant and ageing-resistant performance, short drying time, long opening time, large spraying area per weight (glue economization), and the like, has the advantages of reducing environment pollution, improving operation and construction environment, being low cost and low smell, and the like, is widely used in plate decoration industries of aluminum-plastic plates, clamping plates, density plates, paint-free plates, polymer plates, metal sheets, and the like, and is particularly suitable for applications in green high-grade decoration industries.

The invention discloses a water soluble polyurethane associative thickener, and an inverse polymerization method and use thereof. The method comprises: dehydrating polyethylene glycol by using an organic solvent with a boiling point below 110 DEG C; adding diisocyanate in the protection of an inert gas to perform a reaction; adding fatty alcohol of which the chain is 8 to 22 carbon atoms long as a capping agent for further reaction; adding polyol containing at least three hydroxys as a chain extender to perform an reaction till there are no free isocyanate groups; and adding water, and removing the organic solvent by an azeotropic process to obtain the water soluble polyurethane associative thickener which is white, transparent and sticky fluid. The dehydration temperature of water soluble associative polyurethane is low, so the side reactions are inhibited effectively; and reaction is performed in the organic solvent and catalyst is not required, so cost is reduced and the hydrolysis side reaction of the product due to the catalyst is avoided. Because the polyol is used as a chain extender, the thickener of the invention has a branch structure and high thickening performance.

The invention provides a fireproof insulation board and a manufacturing method thereof. The fireproof insulation board comprises a component A and a component B, wherein the component A comprises the following materials in parts by weight: 60-80 parts of magnesium oxide, 2-14 parts of talcum powder, 0.1-0.5 part of retarder, 0.01-0.05 part of cellulose ether, 0.02-0.1 part of hydrophobic rubber powder or 0.1-2 parts of organic silicon emulsion, 0.1-0.5 part of inorganic pigment, 16-26 parts of magnesium chloride, 5-10 parts of water glass and 70-90 parts of water; the component B comprises the following materials in parts by weight: 4-8 parts of first polystyrene particles, 2-4 parts of second polystyrene particles and 1-2 parts of third polystyrene particles. The fireproof insulation board has the advantages that the manufacturing open time in the board production process can be prolonged, the waterproofness and the tensile strength of the board can be improved, the fire resistance of the fireproof insulation board can be excellent and the problem of unachievable A fireproof grade is thoroughly solved; the fireproof insulation board is better in thermal insulation effect.

Provided texture paint is aqueous texture paint employing macromolecular synthetic resin emulsion and additives. By employing a strong-thixotropy alkali-swelling type thickener and cellulose ether for cooperative use, the texture paint is reasonable in thixotropy and relatively good in thickening property, storage property and construction property, and has no influence on water whitening resistance of the emulsion. After a high-viscosity auxiliary agent with water-retaining property replaces part of cellulose ether, the texture paint is high in viscosity, good in water-retaining property, no sand falls off during construction, the opening time is long, the scraping and the levelling are facilitated, and the use amount of the paint is substantially reduced. The addition of a thixotropy lubricant helps to improve the lubrication viscosity-reducing property, reduce construction resistance, improve sagging resistance, improve construction performances, prevent knife-adhering phenomenon from generating and prolong construction time.

The invention discloses an adhesive for aldehyde-free plywood, and a preparation method thereof, a plywood prepared from the adhesive, and a preparation method thereof, wherein the adhesive is prepared from the following raw materials in parts by weight: 7-12 parts of polyvinyl alcohol, 0.5-1 part of a thickening agent, 0.01-0.1 part of a defoaming agent, 10-15 parts of phosphoric acid, 0.5-1 partof a copper salt, 15-30 parts of flour, 88-93 parts of deionized water and 25-35 parts of polyfunctional isocyanate. According to the invention, no formaldehyde is generated in adhesive production and plywood preparation, and the formaldehyde release amount of the obtained plywood is equivalent to the formaldehyde release amount of the raw material veneer, and the formaldehyde-free purpose is achieved; and by introducing phosphoric acid and a copper salt into the adhesive system, the viscosity increasing rate of the system at a normal temperature is slow, the opening time is long, the adhesive curing rate during hot pressing is moderate, and the production efficiency of the plate is high.

The invention relates to a preparation method of a polyurethane hot melt adhesive adhered with a lower surface energy material. The polyurethane hot melt adhesive prepared by the method provided by the invention has favorable flexibility and body tensile strength, can overcome the influence of an expansion factor difference between different materials, and is uniform in stress distribution so as to adapt to base materials in different types; an anti-dropping performance is good: the times for dropping a roller is higher than 300 times; the adhesion strength is high: the adhesion strength of PEI and a nickel-plated steel disc is higher than 6.0MPa; salt spray resistant and ageing-resistant performances are good: no damage is caused after a salt spray test is carried out for 500 hours, and no remarkable intensity attenuation is caused after a dual-85 test is carried out for 1000 hours.

The invention relates to a flexible true stone paint which comprises the following components: water, non-ionic water soluble cellulose ether, a waterborne multifunctional additive, a defoaming agent, a dispersing agent, a wetting agent, acrylic composite emulsion modified by organo-siloxane, elastic acrylate emulsion, a coalescing agent, a complex solubilizer, an antibacterial preservative, a rheological agent and aggregates. The flexible true stone paint disclosed by the invention overcomes the defects of relatively insufficient toughness, high cracking possibility of a paint film and poor stain resistance of an existing true stone paint, and has the advantages of outstanding flexibility, good cracking resistance, and excellent water resistance, weather resistance and stain resistance.

The invention relates to a photocuring double-component polyurea waterproof coating and a preparation method thereof. The photocuring double-component polyurea waterproof coating is composed of a component A and a component B. The raw material formula of the component A comprises a polyurea prepolymer and an acrylic acid modified polyurea prepolymer, and the polyurea prepolymer is prepared through a reaction of isocyanate and steric hindrance secondary amine. The raw material formula of the component B comprises amino-terminated polyether, an amine chain extender, a photoinitiator, a defoaming agent, an antioxidant and a plasticizer. The steric hindrance secondary amine and the amine chain extender are respectively selected from asparaginic acid ester steric hindrance type secondary amine. An asparaginic acid ester compound is introduced into the component A and the component B at the same time, the photoinitiator is used in cooperation, the coating can be rapidly and deeply dried and cured to form a film after being irradiated by ultraviolet rays, and the weather resistance is good. Acrylic acid is introduced for modification, so that the coating has the flexibility of polyurethane and the hardness of acrylic acid at the same time, and the coating also has excellent cohesiveness, excellent self-repairing and self-healing performance and long opening time.

The present invention relates to a two-component composition comprising a polymer-polyol, optionally further polyols, an aldimine of the formula (I), a zirconium (IV) catalyst and, in the second component, diphenylmethane diisocyanate. The composition is particularly suitable as a solvent-free, low-odor elastic adhesive. The composition has a particularly long open time, a low density and a high level of final strength and cures quickly and without complications.

The invention relates to a preparation method of a thermosensitive polyurethane embedding adhesive. The preparation method comprises the following preparation steps: 1, uniformly mixing polyether polyol, a thermosensitive catalyst and a thermosensitive auxiliary agent to obtain a polyol component; 2, uniformly mixing a fire retardant and polyisocyanate to obtain a polyisocyanate component; and 3, uniformly mixing the polyol component and the polyisocyanate component according to the mass ratio of 100:50-100 so as to obtain the thermosensitive polyurethane embedding adhesive. The thermosensitive polyurethane embedding adhesive is not solidified at normal temperature within 80 minutes. Within 40-90 DEG C, solidification speed is accelerated rapidly with the rising of the temperature. At 90 DEG C, the fastest solidification time is 1 minute 30 seconds. Main properties of the embedding adhesive are as follows: hardness: Shore A hardness 30-100; tensile strength (MPa): 0.4-1.0; volume resistivity (omega.M): being greater than 1*1013; fire resistance UL94; and vertical burning: V0.

Disclosed are polyacrylamide modified bentonite for mortar and a preparation method thereof. The polyacrylamide modified bentonite for mortar is formed by bentonite and polyacrylamide glue wrapping the surface of the bentonite. The polyacrylamide glue comprises, by weight percent based on the bentonite, 1%-4% of polyacrylamide, 1%-6% of ethylene glycol, 4%-10% of water reducer, and 20%-40% of water. By the aid of the polyacrylamide modified bentonite, molecular chain frames of the bentonite and the polyacrylamide are changed. By modification, negative effects of the bentonite and the polyacrylamide on mortar are avoided, compressive strength, bending strength and bonding strength of the mortar can be improved evidently, and application property, water retention and opening time of the mortar are improved. On the condition that the strength of the mortar is unchanged, consumption of cement in the mortar is reduced, consumption of expensive redispersible latex powder is reduced, and material cost of the mortar is reduced.

The invention discloses an environmentally-friendly water-based two-component polyurethane coating and a preparation method thereof. The polyurethane coating is composed of an A component and a B component according to the mass ratio of (2.7-3.0):(0.9-1.0); the A component includes the following materials in percentages by weight: 35-40% of hydroxy acrylate dispersion I, 20%-24% of hydroxy acrylicdispersion II, 0.2%-1.0% of a defoaming agent, 2.0%-3.0% of dipropylene glycol butyl ether, 2.0%-3.0% of ethylene glycol butyl ether, 0.2%-1.0% of a levelling agent, 15%-38% of color paste, and 0.1%-0.3% of a thickener; and the B component includes the following materials in percentages by weight: 30%-33% of propylene glycol diacetate, 43%-49% of polyurethane curing agent I, and 18%-24% of polyurethane curing agent II. The water-based two-component polyurethane coating obtained by the method provided by the invention has better physical and mechanical properties such as hardness, abrasion resistance and flexibility, and performance of water resistance, salt spray resistance, heat and humidity resistance and aging resistance.

The invention relates to ultra-gasoline resistant aqueous varnish and a preparation method thereof. The aqueous varnish comprises a component A resin paint and a component B curing agent in a weight ratio of 3: 1, wherein the component A resin paint comprises 45-65 parts of aqueous hydroxyl acrylic emulsions, 15-30 parts of aqueous hydroxyl polyurethane dispersions, 0.2-0.5 part of a defoaming agent, 0.2-1.0 part of a wetting leveling agent, 0.2-0.6 part of an aqueous drier, 0.1-0.3 part of a bactericide, 1-3 parts of light stabilizers and 5-15 parts of solvents A; and the component B curing agent comprises 55-75 parts of curing agents and 10-30 parts of solvents B. Compared with the prior art, the preparation method is simple, raw materials are widely selected, and the prepared aqueous varnish has excellent chemical resistance, especially gasoline resistance, effectively improves surface drying speed and activation period, has good interlayer adhesion, and has the advantages of fast hardness establishment, high fullness and the like.

The invention discloses a novel sculpture mortar. The novel sculpture mortar comprises the following components: 40-50% of 32.5R ordinary Portland cement, 45%-55% of 40-80 mesh sand ( quartz sands), 1-2% of 50-70 mesh light-weight aggregates, 0.01-0.1% of cellulose ether, 0.02-0.2% of dispersible latex powder, 0.2-0.4% of a water-reducing agent, 2-3% of silica powder, 0.3-0.4% of lignin fiber and 0-0.04% of polyropylene fiber. The component composition is to fulfill the following purposes: the operation is simple; no other materials are required for adding and the sculpture mortar can be directly utilized; the novel sculpture mortar facilitates the construction and has excellent workability; the sag resistance of the novel sculpture mortar enables the thickness of the troweling at one time to be more than 5 cm; a more stereoscopic and richer sculptural effect can be created; the construction efficiency is improved; cracks are rarely found on the sculpture and the simulation effect is improved; the structure is compact; the matching is reasonable and the service life can be prolonged; industrialized production is realized, so that the quality is stable and guaranteed.

The invention belongs to the technical field of construction materials, and particularly relates to a low-temperature repairing material for a high-speed rail base concrete in a severe cold region and application of the concrete low-temperature repairing material. The low-temperature repairing material comprises the following components: 425 ordinary Portland cement, 425 sulphoaluminate cement, 725 sulphoaluminate cement, a waterproof admixture, rubber powder, an aggregate, a water reducer, a construction improver, a water-retaining agent, an early strength agent, a nano multifunctional water repellent agent, and PP (polypropylene) fiber. The low-temperature repairing material for the high-speed rail base concrete in the severe cold region, provided by the invention, has a repairing construction time meeting a skylight time requirement of a high-speed rail, has compression strength after completion of hydration matching with that of the base concrete, is high in tensile bond strength with the base concrete, is slightly expanded and strong in anti-freezing circulation capability at -40 DEG C, can avoid secondary detachment, and well meets requirements on the low-temperature repairing material for the high-speed rail base concrete in the severe cold region.

The invention discloses putty leveling integrated gypsum mortar. The mortar is formed by mixing and stirring, by weight, 60-70 parts of desulfurized gypsum, 10-15 parts of 250-mesh heavy calcium carbonate, 6-10 parts of quartz sand of 20-30 meshes, 10-15 parts of 40-mesh quartz sand, 2-5 parts of glass bead heat preservation lightweight aggregate, 1-2 parts of redispersible emulsion powder VAE, 0.2-0.5 part of hydroxyethyl methylcellulose ether and 0.03-0.05 part of modified protein retarder. By means of the putty leveling integrated gypsum mortar, the traditional indoor leveling construction is greatly simplified, multiple construction procedures such as existing adhesion agents, leveling mortar and putty are replaced, forming can be completed at a time, the maintenance period is short, the construction period is greatly shortened, and the construction efficiency is improved.

The invention relates to a special flooring waterborne polyurethane sub-gloss varnish product and a preparation method and application thereof. Particularly, the varnish product comprises a first container and a second container; the first container comprises a component A which is prepared from, by weight, 40-70 parts of polyacrylate dispersoid, 0.01-5 parts of siloxane dispersing agent, 0.01-5 parts of organosilicone defoaming agent and 0.01-5 parts of non-organosilicone defoaming agent; the second container comprises a component B which is prepared from 10-35 parts by weight of isocyanate curing agent. The invention further discloses the preparation method and application of the varnish product. The varnish product is excellent in surface finishing effect and chemical resistance, other comprehensive properties are balanced, and the varnish product can well meet various indexes of requirements of the national standard.

The invention relates to the hot melt adhesive field, and especially discloses a cross-interface penetration adhesive which can achieve penetration adhesion to a surface film or a gold stamping layer. The penetration adhesive is composed of, by weight, 1-10 parts of ethylene-acrylic acid copolymer wax, 2-12 parts of paraffin, 10-18 parts of maleic anhydride grafting EVA, 10-21 parts of EVA with a high VA content, 6-15 parts of metallocene catalysis polyolefin, 10-18 parts of dehydrated malic acid abietin, 10-25 parts of rosin glyceride, 1-8 parts of liquid-state C5 petroleum resins, 0.5-2 parts of leveling agents, 1-6 parts of plasticizers, 0.2-1.2 parts of high-molecular coupling agents and 0.2-1 part of antioxidants. The obtained cross-interface penetration adhesive can penetrate through printing ink and the like and adheres to internal organic matters, the adhesion fastness is raised and the service life is prolonged.