Abstract: The disclosure belongs to the technical field of synthetic adhesives, and discloses a bionic wet surface adhesion promoter and the preparation thereof, and a room temperature curable silicone sealant composition and the preparation thereof. A method for preparing a bionic wet surface adhesion promoter includes: reacting polyvinylpyrrolidone with 2-chloro-3?,4?-dihydroxyacetophenon; purifying the product obtained in the reaction step using n-hexane; drying the product obtained in the purification step using a vacuum drying process; and grinding the product obtained in the drying step into powder using a ball milling process; wherein the mass ratio of polyvinylpyrrolidone to 2-chloro-3?,4?-dihydroxyacetophenon is (0.8˜1.2):1.

Abstract: The present invention provides an adhesive material with improved bonding performance to a wet substrate, the adhesive material includes a first component selected from a polysiloxane-based adhesive, or a polyurethane-based adhesive; and a second component of a catechol-containing polymeric additive which includes a reaction product of polyvinylpyrrolidone with 3?,4?-dihydroxy-2-chloroacetophenone, and the weight ratio of polyvinylpyrrolidone to 3?,4?-dihydroxy-2-chloroacetophenone ranging from 10:1 to 1:1. The adhesive material being a mixture of at least the first component and the second component, where the second component is approximately 1 wt. % to 10 wt. % of the first component.

Abstract: The invention relates to a modular integrated construction joint which includes a first building module, a second building module or a structural wall and a joint between the first building module and the second building module or structural wall. The joint includes a flexible seamless stitching system, which provides a long-term firestop, smokestop and waterproof for the joint cavity in-between modules in modular integrated construction (MiC).

Abstract: The present disclosure provides an encapsulated particle for anti-UV radiation. The encapsulated particle includes a core comprising an anti-UV agent, and a shell at least partially enclosing the core and comprising a polymer. Due to the presence of the shell, the anti-UV agent can be released into surroundings at a controlled manner. The encapsulated particle can be incorporated into coatings or articles to extend their service life.

Abstract: A durable, hydrophobic and anti-scratching nano-coating for coating on a glass substrate or surface having a water contact angle of about 90° or more, a reduced coefficient of friction by 50% or more, and a reduced surface roughness compared to those of the glass substrate or surface without the nano-coating is provided, which includes a layer of fluorinated silica derived from sol-gel hydrolysis between one or more tetraalkoxysilanes having at least three alkoxy groups and one or more polyfluorinated silanes having at least a trialkoxysilane and from 15 to 17 fluorine atoms in the presence of a catalyst to a reaction mixture of the sol-gel hydrolysis between the one or more tetraalkoxysilanes and the one or more polyfluorinated silanes, and a solvent. A related method of fabricating the nano-coating via atomization of acid-containing or alkali-containing solution and sol-gel precursor solution onto the glass surface is also provided.

Abstract: The invention relates to a modular integrated construction joint which includes a first building module, a second building module or a structural wall and a joint between the first building module and the second building module or structural wall. The joint includes a flexible seamless stitching system, which provides a long-term firestop, smokestop and waterproof for the joint cavity in-between modules in modular integrated construction (MiC).

Abstract: The present application provides for water capsules, preparation methods of water capsules, a preparation method for lightweight concrete and a structure of lightweight concrete. Each of the water capsules comprises an alkali-sensitive shell and water inside; the water capsules are used to mix with a cementitious matrix, the water capsules can survive during concrete mixing and transportation processes but then gradually rupture in hardened concrete; the water released during the hardening of the concrete is beneficial for the hydration of the concrete. The water capsules and their preparation method, the preparation method for and structure of the lightweight concrete of the present application are of unique design and strong practicability.

Abstract: The present invention provides an adhesive material with improved bonding performance to a wet substrate, the adhesive material includes a first component selected from a polysiloxane-based adhesive, or a polyurethane-based adhesive; and a second component of a catechol-containing polymeric additive which includes a reaction product of polyvinylpyrrolidone with 3?,4?-dihydroxy-2-chloroacetophenone, and the weight ratio of polyvinylpyrrolidone to 3?,4?-dihydroxy-2-chloroacetophenone ranging from 10:1 to 1:1. The adhesive material being a mixture of at least the first component and the second component, where the second component is approximately 1 wt. % to 10 wt. % of the first component.

Abstract: A durable, hydrophobic and anti-scratching nano-coating for coating on a glass substrate or surface having a water contact angle of about 90° or more, a reduced coefficient of friction by 50% or more, and a reduced surface roughness compared to those of the glass substrate or surface without the nano-coating is provided, which includes a layer of fluorinated silica derived from sol-gel hydrolysis between one or more tetraalkoxysilanes having at least three alkoxy groups and one or more polyfluorinated silanes having at least a trialkoxysilane and from 15 to 17 fluorine atoms in the presence of a catalyst to a reaction mixture of the sol-gel hydrolysis between the one or more tetraalkoxysilanes and the one or more polyfluorinated silanes, and a solvent. A related method of fabricating the nano-coating via atomization of acid-containing or alkali-containing solution and sol-gel precursor solution onto the glass surface is also provided.

Abstract: The present invention provides a one-component silicone sealant composition curable when exposed to moisture at room temperature. The resulting silicone sealant has excellent stain-resistance, good overall mechanical performances and good adhesion on both dry and wet substrates. The composition contains modified hydroxyl-terminated polyorganosiloxanes polymer network in different viscosities being cross-linked with branched silicone oil in the presence of an environmental-friendly and tin-free catalyst and cross-linkers while some inert and/or functional nanofillers are added into the composition to provide mechanical and/or functional properties to the resulting silicone sealant. A method for preparing the present composition is also provided.

Abstract: The present disclosure provides an encapsulated particle for anti-UV radiation. The encapsulated particle includes a core comprising an anti-UV agent, and a shell at least partially enclosing the core and comprising a polymer. Due to the presence of the shell, the anti-UV agent can be released into surroundings at a controlled manner. The encapsulated particle can be incorporated into coatings or articles to extend their service life.

Abstract: The present invention relates to an anti-bacterial and anti-dust coating for air ducting. In one embodiment, the anti-bacterial and anti-dust coating comprises: a polymer emulsion; a cross linking agent; a film forming agent; a filler and anti-dust agent; an anti-bacterial agent; hardener nanoparticles; a defoamer; and water. The anti-bacterial agent can be in powder or in liquid form. The coating can be applied on the inner surface of metal air ducting to reduce dust aggregation and prevent growth of bacteria, mold and mildew that causes stains and odors inside air ducting. With the aids of nanotechnology, various specific nanoparticles are added in the waterborne polymer emulsion to provide the anti-bacterial, anti-dust, anti-acid, anti-alkali, good flexibility and hardness for the coating. The product is also tested to be flame retardant and water resistance for increased safety in air ducts.

Abstract: The present invention provides a one-component silicone sealant composition curable when exposed to moisture at room temperature. The resulting silicone sealant has excellent stain-resistance, good overall mechanical performances and good adhesion on both dry and wet substrates. The composition contains modified hydroxyl-terminated polyorganosiloxanes polymer network in different viscosities being cross-linked with branched silicone oil in the presence of an environmental-friendly and tin-free catalyst and cross-linkers while some inert and/or functional nanofillers are added into the composition to provide mechanical and/or functional properties to the resulting silicone sealant. A method for preparing the present composition is also provided.

Abstract: A method of applying a riblet structure coating on the internal surface of a pipe includes coating the internal surface of a pipe with a resin layer and applying a cavity mold having a reverse riblet pattern structure to the coated internal surface of the pipe. A flexible air bag is inserted into the interior of the pipe and charged with air to hold the mold against the coated internal surface of the pipe. The air bag may be charged with air for a sufficient amount of time to allow the coating to cure in the riblet shape of the mold. Afterwards, the air bag and the mold are removed from the pipe to yield a pipe coated with an internal riblet structure.

Abstract: The present application provides for water capsules, preparation methods of water capsules, a preparation method for lightweight concrete and a structure of lightweight concrete. Each of the water capsules comprises an alkali-sensitive shell and water inside; the water capsules are used to mix with a cementitious matrix, the water capsules can survive during concrete mixing and transportation processes but then gradually rupture in hardened concrete; the water released during the hardening of the concrete is beneficial for the hydration of the concrete. The water capsules and their preparation method, the preparation method for and structure of the lightweight concrete of the present application are of unique design and strong practicability.

Abstract: A method of applying a riblet structure coating on the internal surface of a pipe includes coating the internal surface of a pipe with a resin layer and applying a cavity mold having a reverse riblet pattern structure to the coated internal surface of the pipe. A flexible air bag is inserted into the interior of the pipe and charged with air to hold the mold against the coated internal surface of the pipe. The air bag may be charged with air for a sufficient amount of time to allow the coating to cure in the riblet shape of the mold. Afterwards, the air bag and the mold are removed from the pipe to yield a pipe coated with an internal riblet structure.

Abstract: The present invention relates to a coating composition and method of manufacturing said coating composition. The coating composition is a two-component coating composition for construction surfaces. The present coating composition is effectively bonded to the surface without an additional application of intermediate layer overcoming the existing problems associated with conventional concrete surface treatment methods.

Abstract: The present invention relates to a method of producing a water repelling surface or imparting hydrophobicity onto a surface comprises applying a polymer-based coating composition. The water repelling surface or the hydrophobic surface imparted by the present method has at least 90° of water contact angle. The water repelling surface or the hydrophobic surface imparted by the present method is preferably on a concrete surface. The present method imparts hydrophobicity onto surfaces that are durable without an additional primer layer between the surfaces and the coating composition.

Abstract: A method of fabricating a porous metal-based biomaterial, the method includes dispersing microwave susceptors into organic solvent to form a homogeneous suspension, dispersing bioactive fillers into organic solvent to form a homogeneous solution, mixing metal powder with the homogeneous solution and the homogeneous suspension to form a mixture, cold-pressing the mixture into a compact with predefined shape and size, placing the compact in a sintering container, and emitting microwave to heat the compact and remove the organic solvent resided in the compact at the same time.

Abstract: The present invention relates to a method of producing a water repelling surface or imparting hydrophobicity onto a surface comprises applying a polymer-based coating composition. The water repelling surface or the hydrophobic surface imparted by the present method has at least 90° of water contact angle. The water repelling surface or the hydrophobic surface imparted by the present method is preferably on a concrete surface. The present method imparts hydrophobicity onto surfaces that are durable without an additional primer layer between the surfaces and the coating composition.