A method of fletching a thermal insulator

Abstract

The application belongs to the technical field of industrial accessory processing, and particularly relates to a heat insulation piece flocking method, which comprises the following steps: step one: providing a heat insulation piece; step two: spraying inorganic adhesive on the heat insulation piece, so that the inorganic adhesive covers the heat insulation piece and forms an inorganic adhesive layer; and step three: implanting flock on the inorganic adhesive layer to form a flocking layer, and the inorganic adhesive layer fixes the flocking layer on the heat insulation piece. The application provides a heat insulation piece flocking method, which sprays inorganic adhesive on the heat insulation piece, so that the inorganic adhesive covers the heat insulation piece and forms an inorganic adhesive layer, implants flock on the inorganic adhesive layer to form a flocking layer, and the inorganic adhesive layer fixes the flocking layer on the heat insulation piece. By implanting flock on the heat insulation piece to form a flocking layer, the heat insulation piece has better heat insulation, anti-scalding, high-temperature resistance and noise reduction effects, and is not easy to scald.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of industrial accessory processing, and particularly relates to a heat insulation part flocking method. BACKGROUND

[0002] Since the object has good heat insulation and high temperature resistance after being flocked, the flocking process is widely applied to parts needing heat insulation, such as automobile exhaust pipes, motorcycle exhaust pipes and boiler covers.

[0003] The motorcycle exhaust pipe is an important component of the engine exhaust system, and mainly functions to reduce noise. The flocked exhaust pipe uses electrostatic flocking principle to use electrostatic attraction to adsorb the flock on the base material. By flocking the inner side of the exhaust pipe, since the flock uniformly distributed on the surface is a fibrous structure, the fibrous structure of the material will reflect, refract and disperse the energy of the sound wave, thereby reducing the propagation and reflection of the sound wave. Meanwhile, the flocking layer with sufficient density and thickness also has the function of heat insulation.

[0004] The existing patent with the authorization announcement number CN209354229U discloses an automobile exhaust pipe with a sound reduction function. The main body is a hollow tubular structure, and the sound absorption layer, the air passage chamber, the mixing chamber, the sound insulation cavity and the exhaust main pipe are sequentially arranged from outside to inside. The air passage chamber is divided into left and right air passage chambers by a partition plate, the top end of the air passage chamber is communicated with the air inlet pipe, the bottom end is communicated with the bottom end of the mixing chamber, the top end of the mixing chamber is downwardly communicated with the top end of the exhaust main pipe and is provided with a horizontal sound absorption plate, the mixing chamber and the exhaust main pipe form a closed sound insulation cavity, the outer wall of the exhaust main pipe is provided with a sound absorber, and the bottom end of the exhaust main pipe is provided with a flow divider, and a plurality of flow dividing pipes penetrating the flow divider and communicated with the exhaust main pipe are arranged on the flow divider. The application uses the combination of the two principles of absorption and reflection to reduce noise, increases the gas flow rate by rotating exhaust to ensure exhaust efficiency, and significantly improves the sound reduction effect through the combined action of the sound absorption plate, the sound absorber, the sound insulation cavity and the sound absorption layer.

[0005] However, the heat insulation, anti-scalding and high temperature resistance effect of the above-mentioned automobile exhaust pipe is not good, and scalding is prone to occur. SUMMARY

[0006] The application aims to provide a heat insulation part flocking method, and aims to solve the technical problems of poor heat insulation, anti-scalding and high temperature resistance effect of the parts needing heat insulation such as the automobile exhaust pipe, the motorcycle exhaust pipe and the boiler cover in the prior art, and the scalding caused by the poor effect.

[0007] To achieve the above-mentioned purpose, the heat insulation part flocking method provided by the application embodiment comprises the following steps:

[0008] Step one: providing a heat insulation part;

[0009] Step two: spray inorganic adhesive on the thermal insulation part, the inorganic adhesive covers the thermal insulation part and forms an inorganic adhesive layer;

[0010] Step three: implant the fluff on the inorganic adhesive layer and form a fluff layer, the inorganic adhesive layer fixes the fluff layer on the thermal insulation part.

[0011] As an optional solution of the application, the inorganic adhesive includes air-drying type inorganic adhesive, water-solid type inorganic adhesive, hot-melt type inorganic adhesive and reaction type inorganic adhesive.

[0012] As an optional solution of the application, the air-drying type inorganic adhesive includes water glass.

[0013] As an optional solution of the application, the water-solid type inorganic adhesive includes silicate cement, aluminate cement, magnesium oxide cement and gypsum.

[0014] As an optional solution of the application, the hot-melt type inorganic adhesive includes glass glue, metal glue, ceramic glue and sulfur mortar.

[0015] As an optional solution of the application, the reaction type inorganic adhesive includes silicate inorganic adhesive, phosphate inorganic adhesive, colloidal silica inorganic adhesive, colloidal alumina inorganic adhesive, silicic acid alkanoic acid inorganic adhesive, dental cement inorganic adhesive, alkaline salt inorganic adhesive and maitreya cement inorganic adhesive.

[0016] As an optional solution of the application, the inorganic adhesive is added with thickening agent, the inorganic adhesive and the thickening agent are mixed uniformly at a ratio of 1:0.01-0.1 and then sprayed on the thermal insulation part.

[0017] As an optional solution of the application, the thickening agent includes inorganic thickening agent, cellulose ether thickening agent, natural polymer thickening agent, synthetic polymer thickening agent and complex organic metal compound thickening agent.

[0018] As an optional solution of the application, the thickness of the fluff layer is 1-10 mm.

[0019] As an optional solution of the application, the fluff of the fluff layer uses high-temperature-resistant meta-aramid, para-aramid, heterocyclic aramid, carbon fiber or glass fiber.

[0020] The one or more technical solutions in the thermal insulation part fluff implantation method provided by the application embodiment at least have one of the following technical effects:

[0021] The application provides a heat insulation piece flocking method, in which the heat insulation piece is sprayed with inorganic adhesive, the inorganic adhesive covers the heat insulation piece and forms an inorganic adhesive layer, the flock is implanted on the inorganic adhesive layer of the inorganic adhesive and forms a flocking layer, and the inorganic adhesive layer fixes the flocking layer on the heat insulation piece. Through implanting the flock on the heat insulation piece and forming the flocking layer, the heat insulation, scald prevention, high-temperature resistance and noise reduction effects are better, and scald is less likely to occur. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0023] Figure 1 The formula table of the silicate inorganic adhesive of the heat insulation piece flocking method provided by the application.

[0024] Figure 2 The formula table of the inorganic sealant adhesive of the heat insulation piece flocking method provided by the application.

[0025] Figure 3 The formula table of the copper oxide-phosphoric acid adhesive of the heat insulation piece flocking method provided by the application.

[0026] Figure 4 The formula table of the silicate adhesive of the heat insulation piece flocking method provided by the application.

[0027] Figure 5 The formula table of the phosphate-silicate adhesive of the heat insulation piece flocking method provided by the application.

[0028] Figure 6 The formula table of the sulfate adhesive of the heat insulation piece flocking method provided by the application.

[0029] Figure 7 The structural schematic diagram of the heat insulation piece flocking method provided by the application applied to a motorcycle exhaust pipe.

[0030] Figure 8 The exploded view of the heat insulation piece flocking method provided by the application applied to a motorcycle exhaust pipe.

[0031] In the drawings, various reference signs represent:

[0032] 1, cylinder body; 2, heat insulation patch; 3, exhaust pipe head; 4, exhaust pipe. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described below are presented by way of example to explain the present application, and are not intended to limit the present application.

[0034] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0036] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In one embodiment of the present application, as shown in Figures 1-8 A method for flocked heat insulation member is provided, comprising the following steps:

[0038] Step 1: providing a heat insulation member;

[0039] Step 2: spraying inorganic adhesive on the heat insulation member, the inorganic adhesive covering the heat insulation member and forming an inorganic adhesive layer;

[0040] Step 3: planting the flock on the inorganic adhesive layer to form a flocked layer, and the inorganic adhesive layer fixing the flocked layer on the heat insulation member.

[0041] The application provides a method for planting fluff on a thermal insulation piece, which sprays inorganic adhesive on the thermal insulation piece, covers the inorganic adhesive on the thermal insulation piece, forms an inorganic adhesive layer, plants fluff on the inorganic adhesive layer, forms a fluff layer, and fixes the fluff layer on the thermal insulation piece by planting fluff on the thermal insulation piece and forming the fluff layer. The thermal insulation piece has better heat insulation, anti-scalding, high-temperature resistance and noise reduction effects and is not easy to scald. The method can also be applied to exhaust cylinders, and the exhaust cylinders have noise reduction function after being planted with fluff.

[0042] In another embodiment of the application, the inorganic adhesive includes air-drying inorganic adhesive, water-solidifying inorganic adhesive, hot-melt inorganic adhesive and reaction-type inorganic adhesive.

[0043] In another embodiment of the application, the air-drying inorganic adhesive includes water glass. The most commonly used air-drying adhesive is sodium silicate solution, commonly known as water glass. The bonding effect of water glass is essentially the process of changing the silicon dioxide solution into silicon dioxide gel. The nSiO2 in water glass is a colloidal microparticle composed of a polymer of silicic acid molecules. Due to hydration, the colloid has considerable negative charge, and the surrounding is bright hydrogen ion. The effect of alkali metal ions is to maintain balance and stability. When water glass reacts with the dehydrated substrate or forms a hydrogen bond, SiO2 colloid is washed out of the solution. The newly formed SiO2 has great activity and can bond the substrate. The air-drying inorganic adhesive is sprayed on the thermal insulation piece, covers the air-drying inorganic adhesive on the thermal insulation piece, forms an adhesive layer, plants fluff on the adhesive layer, forms a fluff layer, and fixes the fluff layer on the thermal insulation piece.

[0044] In another embodiment of the application, the water-solidifying inorganic adhesive includes silicate cement, aluminate cement, magnesium oxide cement and gypsum. The water-solidifying inorganic adhesive is a substance that can be combined and solidified when encountering water. The water-solidifying inorganic adhesive belongs to this category, including silicate cement, aluminate cement, magnesium oxide cement, gypsum and the like. The water-solidifying inorganic adhesive is sprayed on the thermal insulation piece, covers the water-solidifying inorganic adhesive on the thermal insulation piece, forms an adhesive layer, plants fluff on the adhesive layer, forms a fluff layer, and fixes the fluff layer on the thermal insulation piece.

[0045] In another embodiment of the invention, the hot-melt inorganic adhesive includes glass glue, metal glue, ceramic glue, and sulfur putty. The bonding mechanism of the hot-melt inorganic adhesive involves heating a solid adhesive into a liquid state, then applying it to the surface of the object to be bonded. After the adhesive cools, a strong bond is formed. The bonding mechanism of hot-melt adhesives is related to their composition. Hot-melt adhesives are typically composed of polymers, resins, adhesives, additives, and other components. These components undergo a chemical reaction upon heating, forming a cross-linked structure, thereby giving the adhesive strong bonding force. The hot-melt inorganic adhesive is sprayed onto the thermal insulation component, covering it and forming an adhesive layer. Flocking is then implanted into the adhesive layer, forming a flocked layer, which is then fixed to the thermal insulation component by the adhesive layer.

[0046] In another embodiment of the present invention, reactive inorganic adhesives include silicate inorganic adhesives, phosphate inorganic adhesives, colloidal silica inorganic adhesives, colloidal alumina inorganic adhesives, silicic acid inorganic adhesives, dental putty inorganic adhesives, alkaline salt inorganic adhesives, and litharge putty inorganic adhesives. Silicate type: Based on alkali metals and silicates such as quaternary ammonium tertiary amines and guanidines, a curing agent and a skeleton material are added and mixed according to actual conditions. The formulations of silicate inorganic adhesives are shown in the table below. Figure 1 As shown. Phosphate type: A type of adhesive that uses concentrated phosphoric acid as a binder. Mainly includes silicate-phosphoric acid, acid phosphates, oxide-phosphoric acid, etc. For example, copper oxide-phosphoric acid adhesives, etc. The formulations of inorganic adhesives are as follows:

[0047] 1. Inorganic sealant, formulation as follows Figure 2 As shown.

[0048] 2. Copper oxide-phosphate adhesive, formulation as follows Figure 3 As shown.

[0049] 3. Silicate adhesives, formulation as follows Figure 4 As shown.

[0050] 4. Phosphate-silicate adhesives, formulation as follows Figure 5 As shown.

[0051] 5. Sulfate adhesives, formulation as follows Figure 6 As shown.

[0052] Reactive inorganic adhesives can quickly react and form strong bonds when force is applied. The reaction capability of this adhesive makes it widely used in various applications. The basic principle of reactive adhesives is chemical reaction. Adding a chemical to the adhesive, when in contact with another substance, a chemical reaction occurs. This reaction causes the adhesive to harden instantly and bond with the adherend. This reaction is fast and reliable, so it is very convenient to use in situations where quick bonding is required. Spray the thermal insulation with reactive inorganic adhesive, the reactive inorganic adhesive covers the thermal insulation and forms an adhesive layer, the fluff is implanted on the adhesive layer to form a flocking layer, and the adhesive layer fixes the flocking layer on the thermal insulation.

[0053] In another embodiment of the present application, in order to ensure the stability of the fluff bonding, a thickening agent needs to be added to the inorganic adhesive. The inorganic adhesive and the thickening agent are mixed uniformly at a ratio of 1:0.01-0.1 and then sprayed on the thermal insulation, i.e. the amount of thickening agent is 1%-10% of the inorganic adhesive. The thickening agent has the function of increasing the viscosity and consistency of the adhesive, and can improve the adhesion and bonding performance of the adhesive. The thickening principle of the adhesive thickening agent is to change the physical properties of the adhesive, increase its viscosity and consistency, and thus improve the flowability and adhesion of the adhesive. At the same time, the thickening agent also helps to improve the durability and shear resistance of the adhesive, enhances the stability of the bonding site, and makes the inorganic adhesive bonding fluff more stable.

[0054] In another embodiment of the present application, the thickening agent includes inorganic thickening agent, cellulose ether thickening agent, natural polymer thickening agent, synthetic polymer thickening agent, and complex organic metal compound thickening agent. The inorganic thickening agent includes inorganic salt thickening agent and inorganic gel mineral thickening agent, such as fumed silica, sodium-based bentonite, organic bentonite, diatomite, attapulgite, molecular sieve, and silica gel. The system using inorganic salt as thickening agent is generally a surfactant aqueous solution system. The surfactant forms micelles in the aqueous solution, and the presence of electrolytes increases the association number of micelles, leading to the transformation of spherical micelles to rod-like micelles, increasing the resistance to movement, and thus increasing the viscosity of the system.

[0055] The cellulose ether thickening agent includes methyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethyl cellulose, and hydroxyethyl cellulose. The thickening mechanism of cellulose thickening agent is that the hydrophobic backbone associates with surrounding water molecules through hydrogen bonds, increasing the fluid volume of the polymer itself and reducing the space for particle free movement, thereby increasing the viscosity of the system. Natural polymer thickening agent is a high molecular substance extracted from natural plants, animals and microorganisms. They have biocompatibility and biodegradability, and do not pollute the environment.

[0056] Common natural polymer thickening agents include starch, gelatin, sodium alginate, casein, guar gum, chitosan, gum arabic, xanthan gum, soybean protein glue, natural rubber, lanolin, agar and the like. The principle of natural polymer thickening agent is to use the polysaccharide, protein and pectin in plant extract to combine with water molecules to form a colloid, thereby increasing the viscosity and concentration of the liquid. The specific principle is as follows: polysaccharide structure: the polysaccharide in plant extract has a branched structure and a high molecular weight, which can form hydrogen bonds and electrostatic forces between water molecules and interact, thereby making the solution viscous. Synthetic polymer thickening agent is made of high molecular compound.

[0057] Common synthetic polymer thickening agents include polyacrylamide, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide, carbopol resin, polyacrylic acid, sodium polyacrylate, polyacrylate copolymer emulsion, cis-butadiene rubber, styrene-butadiene rubber, polyurethane, modified polyurea, low molecular polyethylene wax. High molecular compound is a long chain molecule composed of a large number of repeating units, which has a high molecular weight and a molecular weight distribution. In the liquid, the long chain molecules of the high molecular compound can interweave and entangle with each other to form a network structure, thereby increasing the viscosity and viscosity of the liquid.

[0058] Complex organic metal compound thickening agent includes amino alcohol complex type acid ester, organic zirconium complex.

[0059] In another embodiment of the present application, the thickness of the flocking layer is 1-10 mm, preferably 5 mm. Further, the flocking layer uses high-temperature-resistant meta-aramid, para-aramid, heterocyclic aramid, carbon fiber or glass fiber to ensure the stability of the flocking layer under high temperature.

[0060] The present application provides a kind of heat insulation piece flocking method, can be widely used in vehicle accessories field, for example, can be used for motorcycle exhaust cylinder. As shown in Figure 7 And 8 As shown in the motorcycle exhaust cylinder includes cylinder body 1, heat insulation patch 2, exhaust cylinder head 3 and exhaust pipe 4, heat insulation patch 2 is fixedly connected to the outer side of cylinder body 1, cylinder body 1, exhaust cylinder head 3, exhaust pipe 4 are sequentially arranged, connect, the inner side of cylinder body 1, heat insulation patch 2, exhaust cylinder head 3 and exhaust pipe 4 is sprayed inorganic adhesive, inorganic adhesive covers in cylinder body 1, heat insulation patch 2, exhaust cylinder head 3 and exhaust pipe 4, and forms inorganic adhesive layer, flocking layer is implanted on inorganic adhesive layer, and forms, inorganic adhesive layer is fixed on cylinder body 1, heat insulation patch 2, exhaust cylinder head 3 and exhaust pipe 4 on flocking layer, cylinder body 1, heat insulation patch 2, exhaust cylinder head 3 and exhaust pipe 4 implant flocking layer, improve the heat insulation and heat resistance after.

[0061] The heat insulation piece flocking method provided by the present application can also be applied to the automobile exhaust cylinder, and the flocking layer can be implanted on the automobile exhaust cylinder to improve the heat insulation and heat resistance of the automobile exhaust cylinder.

[0062] The method for planting the flocking layer can also be applied to the field of boilers. For example, a flocking layer can be planted on a boiler cover according to the method to achieve heat insulation and scald prevention.

[0063] The method for planting the flocking layer can also be applied to exhaust pipes. The exhaust pipes have the function of noise reduction after being planted with the flocking layer.

[0064] The above merely preferred embodiments of the present application and are not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for flocking thermal insulation components, characterized in that, The heat insulation component is an exhaust pipe, comprising the following steps: Step 1: providing a heat insulation component; Step 2: spraying an inorganic adhesive onto the heat insulation component, the inorganic adhesive covering the heat insulation component and forming an inorganic adhesive layer; Step 3: implanting flocking fibers onto the inorganic adhesive layer to form a flocked layer, the inorganic adhesive layer fixing the flocked layer to the heat insulation component, the thickness of the flocked layer being 1-10mm; The flocked layer uses high-temperature resistant meta-aramid, para-aramid, heterocyclic aramid, carbon fiber or glass fiber as the flocking fibers. The inorganic adhesive contains a thickener. The inorganic adhesive and the thickener are mixed evenly at a ratio of 1:0.01 to 0.1 and then sprayed onto the heat insulation component. The thickener is polyacrylamide or an organozirconium complex. The inorganic adhesive is a silicate inorganic adhesive. The formulation of the silicate inorganic adhesive is: 97.85 parts by weight of sodium silicate, with a density of 1.25-1.37 g / cm³. 3 Aluminum oxide 1.35 parts by weight; iron oxide 0.47 parts by weight; calcium oxide 0.16 parts by weight; magnesium oxide 0.13 parts by weight; zinc oxide 0.04 parts by weight.

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