TWI333464B - System and method for closing tank opening - Google Patents

Description

1333464 IX. Description of the Invention: [Technical Field] The present invention relates to a system for closing an opening in a sump having excellent * barrier properties and a method for closing an opening in a sump. [Prior Art] General-purpose resins, such as polyethylene and polypropylene, are often used in various applications due to their good plasticity, excellent mechanical properties, and excellent moisture barrier properties. However, such resins have limited availability in terms of liquids and gas storage tanks requiring hydrocarbon-barrier properties. Based on these limitations, it is replaced by a multilayer structure formed by co-extruding, laminating or coating a general-purpose resin and other resins. At present, ethylene-vinyl alcohol copolymers and polyamide resins have excellent gas barrier properties and are often used in the manufacture of multilayer molded plastic articles requiring barrier properties. However, ethylene-ethylene glycol copolymers and polystyrene are more expensive than general-purpose resins. Therefore, there is a continuing need for a resin composition which has excellent barrier properties despite the use of less ethylene glycol copolymer or polyamine resin. On the other hand, liquid or gas sumps used in various types of vehicles must generally meet the tightness and permeability criteria associated with their type of design and must meet environmental requirements. In Europe and the world today, in general, regulations restricting the discharge of pollutants into the atmosphere and the environment are becoming stricter. Therefore, the design of liquid and gas storage tanks is approaching the technology that ensures better sealing and safety under various operating conditions. It is also trying to reduce the number of tank-related fittings and piping as much as possible. Leakage. One method sometimes used to incorporate certain accessories and distributions into the expansion slot' thus removes the interface with the outside atmosphere. It is known from the patent application WO 01/21428 of Solvay that an opening in the multi-slot can be closed by covering the opening with a multi-layer plastic sheet welded to the wall of the tank, wherein the plastic layer is welded. The surface layer of the sump of the sump has a compatible composition. In contrast, the sump described in the patent application maintains a fuel line between the barrier layer and the wall surface of the tank, which is usually installed inside the closed-storage multilayer structure. The pipeline is made of plastic such as HDPE. The impermeability of the made plate to fuel is not optimal. The 塑胶~ 叫 蛰 蛰 蛰 蛰 蛰 蛰 蛰 蛰 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于 由于Furthermore, there is another problem that the plastic stalk for the plate is limited to the composition of the sump. For example, when the sump HDPF ^ i _ continues

If the layer of the board is HDpE = with poor barrier properties, there will be fuel leaking through the joint between the surface layer of the tank and the layer. SUMMARY OF THE INVENTION The present invention is directed to providing a line and method for use in a closed-fuel storage summer, which is used for a single-layer structure: a cerium phase, and a liquid-barrier property. a plate formed by a nanocomposite with a sump wall material π I, thereby inhibiting leakage through the slab joint between the plate and the fuel sump groove wall 1333464 according to the present invention In order to achieve the above object, a system for closing an opening in a sump is provided, the system comprising a plate that is fused to a groove wall at a position around the opening of the sump, wherein the plate includes The nanocomposite composition is composed of the following components, and the nanocomposite composition is composed of the following components: (1) 0.5 to 60 4 parts by weight. a nanocomposite having a barrier property consisting of a layered clay and at least one resin having a barrier property selected from the group consisting of ethylene glycol copolymer, polystyrene, and ionic a group consisting of a polymer and a polyethylene glycol, 纟(4)j to 30 parts by weight Compatibilizer. In one embodiment of the present invention, the polyolefin resin may be selected from the group consisting of high-grade polyethylene, low-density polyethylene, linear low-density polyethylene, ethylene-propylene copolymer, metallocene polyethylene, and poly A resin consisting of propylene and a mixture of such mixtures. The polypropylene may be selected from the group consisting of propylene homopolymers and copolymers, metallocene polypropylenes, and composite resins, which are added to propylene by at least one additive selected from the group consisting of talc, flame retardants, and the like. The homopolymer or copolymer is prepared by enhancing the physical properties of the homopolymer or copolymer of the polypropylene. In other specific embodiments of the present invention, the layered clay may be selected from the group consisting of montmorillonite, bentonite (bentonite), kaolinite, mica, montmorillonite (hectorite, hectorite), and flurite. Fluorite (fluorohectorite), saponite, beidelite, nontronite, stevensite, vermicullite, hallosite, valerite (volkonstoite), 7 1333464 a group consisting of suconite, magadite, kenyalite, and mixtures of these. In other embodiments of the invention, the polyamide may be selected from the group consisting of ruthenium nylon 46, 2) nylon 6, 3) nylon 66, 4) nylon 61 〇, 5) nylon 7, 6) nylon 8, 7) nylon. 9, 8) nylon π, 9) nylon 12, 1 〇) nylon 46, 11) MXD6, 12) amorphous polyamide, 13) containing polyamine 1;) to 12) two or more A mixture of a polyamide copolymer of guanamine, and a mixture of two or more polyamines of M) polyamines to 12). In another embodiment of the present invention, the ionic polymer has a melt index ranging from 0.1 to 10 g/10 minutes (丨卯, 2, 16 〇g). Another specific example of the present invention The compatibilizing agent may be at least one copolymer selected from the group consisting of ethylene-ethylene = anhydride-acrylic acid copolymer, ethylene-ethyl acrylate copolymer, ethylene-propionic acid Alkyl ester-acrylic acid copolymer, yttrium maleate modified (grafted) high density polyethylene, maleic anhydride modified (grafted) linear low density polyethylene, ethylene alkyl alkane methacrylate-methacrylic acid copolymer a group consisting of ethylene-butyl acrylate di-acrylate, mono-ethylene-vinyl acetate copolymer and monomaleic anhydride (a group of ethylene-ethylene acetate copolymers. In another embodiment of the invention) The plate may be configured with at least one line of the plate. 'In another embodiment of the present invention, the plate may be attached to at least one fitting inside the sump. In another embodiment of the present invention The plate may have a multilayer construction. 1333464 in accordance with the present invention In another aspect, a method for closing an opening in a sump is provided, the method comprising the steps of: (a) dry blending the following ingredients: (i) 100 parts by weight of a polyolefin resin, (ii) 0.5 to 60 parts by weight of a nanocomposite having a barrier property consisting of a layered clay' and at least one resin having barrier properties selected from the group consisting of ethylene-vinyl alcohol copolymer, polyamine, a group consisting of an ionic polymer and polyvinyl alcohol, and (iii) 1 to 30 parts by weight of a compatibilizing agent; (b) a sheet formed by molding • I forming, the board comprising a combination of nanocomposites Forming a layer of the object; and (c) refining the plate around an opening in a sump to close the opening. In one embodiment of the invention, the plate may be by a hot plate The splicing method, the vibration welding method or the laser welding method is fused to the opening in the sump. In other specific embodiments of the invention, at least one of the plates may be welded before the at least one fitting is welded to the periphery of the opening. The fitting is welded to the plate. In another embodiment of the present invention, At least one accessory may be attached to the inner wall of the sump adjacent the opening before the sump is closed by simultaneously welding the plate to the fitting and the periphery of the opening. In another embodiment of the invention, The storage tank can be used as a fuel tank for a steam locomotive. 'Embodiment】 The present invention will be described in more detail below. The term "storage tank" is a closed chamber that has various shapes and is usually closed for isolation from the outside. Various fittings may be provided in the interior of the tank or through the wall of the tank. The tank may be a gas storage tank, a liquid storage tank or a storage tank designed to contain both a gas and a liquid. Preferably, the storage tank is a tank. a liquid storage tank or a liquid storage tank which may also contain a gas phase. Some storage tanks have one or more openings, that is, circular or other shaped slits which are made through the wall of the tank for various purposes, such as It can be used to introduce at least one accessory that cannot be set at the time of manufacture. In order to be able to use the tank for the normal use of storing and containing liquids and gases, it is necessary to design and match the sealing system which can close the tank as much as possible after inserting the fitting. The present invention provides a system for closing an opening in the sump, the system comprising a plate, wherein the plate comprises a layer formed of a composition, the composition being prepared by dry blending of the following components (a) 100 parts by weight of a polyolefin resin, (b) 0.5 to 60 parts by weight of a nanocomposite having barrier properties, the nanocomposite being composed of a layered clay and at least one resin having barrier properties, The resin is selected from the group consisting of ethylene-vinyl alcohol copolymer, polyamine, ionic polymer and polyvinyl alcohol, and (c) from 1 to 30 parts by weight of a compatibilizer. The closure system of the present invention is designed for a plastic sump having a single or multi-layer construction. The term "plastic" is used to include synthetic polymers, thermoplastic and thermoset materials which are solid under ambient conditions and which comprise a mixture of at least two of these materials. The polymers include homopolymers and copolymers. The sump is preferably made of a resin having barrier properties. In the case where the sump has a multilayer structure, it is preferred that at least one of the inner layers is a barrier layer. Examples of such barrier compositions include, but are not limited to, poly(R) 464 amine and copolyamide resins, statistical copolymers of ethylene and vinyl alcohol, and thermal-oriented liquid crystal polymers such as p-benzylic acid and 6- Hydroxy-2_naphthoic acid or copolyester of dibenzoic acid and 4,4,-dihydroxybiphenyl.

More preferably, the plastic sump has the same composition as the panel of the closure system of the present invention. That is, the sump has a single layer or a plurality of layers including a layer formed of the composition prepared by dry blending of the following components: (a) 1 part by weight of the polyolefin a resin, (b) a nanocomposite having a barrier property of 5 to 6 Torr, the nanocomposite being composed of a clay and at least a resin having a barrier property f selected from the group consisting of a group consisting of a woman's squama copolymer, a (tetra)amine, an ionic polymer, and a polyethylene, and (c) an i to 3 parts by weight of a compatibilizer.

The term "plate" means any solid element which is small in thickness compared to the surface area and which is rigid like the groove wall of the tank. The plate can have a variety of shapes, and generally the shape of the plate depends on the various types of the sump and the location of the sump surface to be closed. The panel has a flat or slightly curved surface, especially in the case of a small opening, such as a circular opening, which does not exceed 80 mm. Can /

In the closed system of the invention, the polyolefin resin 1 is selected from the group consisting of a south density polyethylene (10) PE, a low density polyethylene (LDPE) low density polyethylene (LLDPE), a ethylene (four) silk, The composition of the genus of the genus of the genus and the genus of the genus of the genus, the propylene group and the bismuth metal; The preparation is carried out by adding at least one optional talc, _, an additive to a propylene polymer or a total of 1333464 to enhance the physical properties of the polypropylene homopolymer or copolymer. In the closed system of the present invention, the nanocomposite having barrier properties is prepared by mixing a layered clay and at least one resin having barrier properties selected from the group consisting of ethylene-vinyl alcohol (EVOH) copolymers and polyfluorenes. A group consisting of an amine, an ionic polymer, and polyvinyl alcohol (PVA). The nanocomposite having the barrier property thus prepared has a form selected from the group consisting of exfoliated, partially destratified, intercalated, and partially intercalated. The most important is that the shape of the nanocomposite having barrier properties is maintained even after the formation is completed. Preferably, the fully destratified form has the advantage of improving the barrier properties of the nanocomposite. In the nanocomposite having barrier properties, the weight ratio of the resin having barrier properties to the layered clay is in the range of 58.0: 42.0 to 99.9: 0.1, preferably 85.0: 15.0 to 99.0: 1.0. When the resin having barrier properties is present in an amount of less than 58.0% by weight, the layered clay will agglomerate and is not suitable for dispersion in the nanocomposite having barrier properties. Meanwhile, when the resin having a barrier property is present in an amount of more than 99.9% by weight, the barrier property cannot be further improved without being expected. The layered clay is preferably organically modified by embedding an organic modifier between the layers of the layered clay. The content of the organic modifier in the layered clay is preferably in the range of from 1 to 45% by weight. When the weight ratio of the organic modifier is less than 1%, the layered clay is poorly compatible with the resin having barrier properties. Meanwhile, when the weight ratio of the organic modifier is more than 45%, the resin molecular chain having a barrier property is difficult to be interposed between the layers of the layered clay. 12 1333464 Layered clay is preferably selected from the group consisting of montmorillonite, bentonite (bentonite), kaolinite, mica, hectorite (hectorite, hectonte), montmorillonite, and stone. (saponite), beidellite, nontronite, stevensite, vermiculhte, hau〇site, valerite (v〇lk〇nst〇) A group of ite ), sucomte, magadite, kenyalite, and mixtures of these. Preferably, the organic modifier has a φ having a primary ammonium, a secondary recording, a tertiary recording, a fourth-order recording, a scale, a maleate, a citrate, an acrylate, an acid-saving group, and an anthracene. An organic material in which a functional group is selected from the group consisting of sulfonate and distearyl decyl ammonium. The molar content of the ethylene content in the ethylene-vinyl alcohol copolymer used in the present invention is preferably from 10 to 50%. When the molar ratio of the ethylene content is less than 10%, the melt forming of the final composition becomes difficult due to poor workability. At the same time, when the molar ratio of ethylene content is higher than 50%, sufficient oxygen and liquid-barrier properties cannot be achieved. • Polyamide can be selected from 1) nylon 46, 2) nylon 6, 3) nylon 66, 4) nylon 610, 5) nylon 7, 6) nylon 8, 7) nylon 9, 8) nylon 11, 9) nylon 12, 10) Nylon 46, 11) MXD6, 12) amorphous polyamine, 13) Polyamine copolymer containing two or more polyamines of polyamines 1) to 12) and 14 a mixture of two or more polyamines of polyamines 1) to 12). The term "amorphous polyamine" as used herein refers to a polyamine having a lack of crystallinity' when using a differential scanning calorimeter (DSC), as measured by ASTM D3417, 1 (TC/min, 13 1333464 No endothermic crystallization melting peak is observed. In general, polyamines can be prepared from diamines and dicarboxylic acids. Suitable examples of diamines include hexamethylenediamine and 2-methylpenta Mercaptodiamine, 2,2,4-tridecylhexamethylenediamine, 2,4,4-trimethylhexamethylenediamine, anthracene (4-aminocyclohexyl)methane, 2 2-贰(4-Aminocyclohexyl) isopropylidene, 1,4-diaminocyclohexane, 1,3-diaminocyclohexane, m-xylenediamine, 1,5 -diaminopentane, 1,4-diaminobutane, 1,3-diaminopropane, 2-ethyldiaminobutane, 1,4-diaminomethylcyclohexane, Di-p-phenylenediamine, alkyl-substituted or unsubstituted phenyl-diamine and p-phenylenediamine. Suitable examples of dicarboxylic acids include alkyl substituted or unsubstituted Isophthalic acid, terephthalic acid, adipic acid, sebacic acid and butyl - Dicarboxylic acid. Polyamine prepared from aliphatic diamines and aliphatic dicarboxylic acids is usually a semicrystalline polyamide (also known as crystalline nylon) and is a non-amorphous polyamine. Polyamines prepared from aromatic diamines and aromatic dicarboxylic acids are difficult to handle under general melt processing conditions. Therefore, amorphous polyamines can be derived from aromatic diamines and aliphatic dicarboxylic acids. An acid, or prepared from an aromatic dicarboxylic acid and an aliphatic diamine. The aliphatic group of the amorphous polyamine is preferably a Ci-Cb aliphatic group or a c4-c8 alicyclic alkyl group. The aromatic group of the indoleamine is preferably a substituted C!-C 6 ^ monocyclic- or bicyclic aromatic group. However, not all types of amorphous polyamines are necessarily suitable for use in the present invention. For example, Meta-diphenylene diamine hexamethylenediamine (i.e., decylamine formed from meta-diphenylene diamine and adipic acid) is easily crystallized under typical heating conditions of a thermoforming process or when oriented. Suitable for use. 14 1333464 A specific example of an amorphous polyamine suitable for use in the present invention includes hexamethylenediamine benzene. Indoleamine, hexamethylenediaminem-xylylenediamine/p-xylyleneamine terpolymer, wherein the ratio of one isophthalic acid/terephthalic acid is between 99/1 and a mixture of 60/40), 2,2,4- and 2,4,4-trimethylhexamethylenediamine terephthalamide, and isophthalic acid, terephthalic acid or a copolymer of a mixture with hexamethylenediamine or 2-mercaptopentamethylenediamine. Polyamides having a high terephthalic acid content mainly composed of hexamethylenediamine m-xylyleneamine/p-benzoic acid can be used, but must be mixed with another diamine, for example 2-decyldiaminopentane to produce a processable amorphous polyamine. The amorphous polyamine based on the above monomers may contain only a small amount of decylamine, such as caprolactam or laurylamine, as a co-monomer. Importantly, the polyamine is generally amorphous. Therefore, any co-monomer can be used in the present invention as long as it does not crystallize the polyamine. The amorphous polyamine may comprise a liquid or solid plasticizer in a weight ratio of less than 10%, such as glycerin, sorbitol or terpene φ sulphate (Santicizer, manufactured by Monsanto). In most applications, the Tg value of the amorphous polyamine (as measured in the dry state, that is, the weight ratio of water contained below 0.12%) must be between 70 ° C and 170 ° C. And preferably between 80 ° C and 160 ° C. The amorphous polyamine does not specifically "blend" and has a Tg value of about 125 ° C in the dry state. The minimum Tg value of the amorphous polyamine is about 70 ° C, although it is not so clear. The maximum limit of the Tg value of the amorphous polyamine is also unclear. However, the use of amorphous polyamines having a Tg of about 170 ° C or above will make thermoforming of the final composition difficult. Therefore, polyamine having an aromatic group in the acid or amine moiety is not suitable for the purpose of the present invention because it has a Tg value of 15 1333464 which is too high to be thermoformed. Polyamide can also be semi-crystalline. The semi-crystalline polydecylamine is usually prepared using an intrinsic amine such as nylon 6 or nylon 11, or an amino acid, or a diamine such as hexamethylenediamine and a dibasic acid, such as a number. Acid, adipic acid or sebacic acid are prepared by condensation. The polyamine may be a copolymer or a terpolymer, for example, a copolymer of hexamethylenediamine/adipic acid and caprolactam (e.g., nylon 6 and nylon 66). Mixtures of two or more polyamides can also be used. The semicrystalline and amorphous polyamines are prepared by a polycondensation process well known in the art. The ionic polymer is preferably a copolymer of acrylic acid and ethylene having a melt index of from 0.1 to 10 g·min (190 ° C, 2,160 g). The content of the nanocomposite having barrier properties in the nanocomposite composition is preferably from 0.5 to 60 parts by weight, and more preferably from 3 to 30 parts by weight. When the amount of the nanocomposite having a barrier property is less than 0.5 part by weight, the improvement in barrier properties is meaningless. At the same time, when the amount of the nanocomposite having a barrier property is more than 60 parts by weight, processing is difficult. In the closed system of the present invention, the compatibilizer functions to improve the compatibility of the polyolefin resin with the nanocomposite having barrier properties to form a composition having a stable structure. The compatibilizer can be a polar hydrocarbon polymer. When a polar group-containing hydrocarbon polymer is used, the polymer base hydrocarbon portion can improve the affinity of the compatibilizer for the polyolefin resin and the nanocomposite having barrier properties, and thus 16 1333464 produces a structurally stable final Formed items. With respect to the compatibilizer, at least one copolymer selected from an epoxy resin-modified polystyrene copolymer, an ethylene-ethylene anhydride-acrylic acid copolymer, and a copolymer may be used. Ethylene-ethyl acrylate copolymer, an 'ethylene-alkyl acrylate-acrylic acid copolymer, maleic anhydride modified (grafted) high density polyethylene, maleic anhydride modified (grafted) linear low density polyethylene, Ethylene-alkyl methacrylate-mercaptoacrylic acid copolymer, ethylene-propylene butyl acrylate copolymer, ethylene-ethylene acetate copolymer, maleic anhydride modified (grafted) ethylene-ethylene acetate copolymer And the modified products of the materials, and the group consisting of the mixtures. The content of the compatibilizing aid in the nanocomposite composition is preferably from 1 to 30 parts by weight, more preferably from 3 to 15 parts by weight. If the amount of the compatibilizing agent is less than 1 part by weight, the mechanical properties of the shaped article produced by the nanocomposite composition are deteriorated. If the amount of the compatibilizer is more than 30 parts by weight, the forming process of the composition becomes difficult. • A preferred epoxy-modified polystyrene copolymer as a compatibilizer, the copolymer consisting of a skeleton and branches comprising 70 to 99 parts by weight of styrene and 1 to 30 weights The epoxy compound is represented by the following formula 1: _R_g_g_R. \/ 0 wherein R and R' are each independently a Ci-C having a double bond at the end of the molecular structure. An aliphatic or C5-C2G aromatic residue, and the branch contains 1 to 80 parts by weight of an acrylic acid 17 1333464 monomer as shown in the following formula 2:

Ch3

-CH2-CH Each of the maleic anhydride modified (grafted) high density polyethylene, maleic anhydride modified (grafted) linearly low, degree polymethylene and maleic anhydride modified (grafted) ethylene-B The thin sour vinegar copolymer 'preferably consists of 100 parts by weight of the skeleton and 1 to 10 parts by weight of the branch containing maleic anhydride. When the amount of maleic anhydride present is less than 0.1 part by weight, the compatibilizing agent fails to perform satisfactorily. At the same time, when the maleic acid needle is present in an amount of more than 10 parts by weight, an unpleasant taste will be produced during the formation of the composition. The nanocomposite composition of the present invention is prepared by simultaneously adding a barrier-type nanocomposite, a compatibilizing agent and a polyolefin resin in the form of particles of a set ratio in a particle mixer, followed by dry blending. The dry blended composition is melt blended and formed in an extrusion molding machine to form a constituent layer of the sheet. The forming can be carried out in accordance with a conventional forming method including blow molding, extrusion molding, press molding, and injection molding. • The plate is welded to the groove wall at the location around the opening. The term "welding" means that the plate is integrated with the wall of the groove by the following steps: the plate is in contact with the entire periphery of the opening at the edge of the opening of the sump, so that the plate is juxtaposed with the edge of the groove wall and makes it two main One of the side surface molecules penetrates into the groove wall to form a closed surface in the form of a closed ring, a circle or any shape, and the closed surface is more or less shaped according to the outer circumference of the side of the plate. The board has a layer structure comprising a layer formed of a composition having a barrier property nanocomposite. In this case, the barrier having the barrier properties can be incorporated into the layer or into the structure to insert a particular additional layer which is primarily composed of a composition of the composite. In particular, the insertion of the core layer must be carried out by a barrier compound having a barrier property, and the slab of the sump has a multi-layer structure, and is preferably melted. Name_"The outer layer has a composition composition compatible with the outer layer of the storage tank," means that the layered composition of the reservoir is good in the layered composition of the storage plate; the chemical of the outer wall of the storage tank near the pupil And physical compatibility. The phenomenon of separation, in order to stop any composition of the welded parts composition _ a component of the physical phenomenon. 4 化学 The chemical reaction that is harmful to the storage tank after the opening is closed. The multi-layer construction, which generally ensures that the board has long-term adhesion to the tank, can be the same as the tank wall itself. In sealing, it is generally preferred that the plate construction be the same as the groove wall. The best system irl uses (4) structure' and the barrier composite nanocomposite composition itself is identical and constitutes the same polymer layer. j. The term "outer layer of the board" is used to mean a layer whose surface is adjacent to the surface of the other layer n of the board in contact with the environment outside the board. The system according to the present invention is well suited for closing a single opening of a sump. It is also suitable for the opening of the sump. According to a particularly preferred embodiment of the closure system of the present invention, the panel is integrated with at least the fitting on the inner surface of the reservoir. The term "accessory J" means any element that allows a liquid or gas to pass through, or is in contact with a liquid or gas to perform special functions on the device in which the sump is installed, including liquid and/or gas between two other components of 19 1333464 The function of the conveyance. Examples of such accessories include the following accessories, but not limited to this. A container of money contains fresh or complex materials, especially steam filter cans; - a liquid or gas meter; - a guiding liquid Or an electronic connection line for a gas meter; - a liquid or gas pump; - a safety valve that is used to control the storage tank closure in certain special circumstances, such as a tumbling restrictor valve (10) V), or automatically in the event of a tank reversal a valve; a drain container for collecting liquid; an electronic connector for supplying power to a liquid or gas pump; • a liquid conduit for directing feed to any device, particularly a motor ',, • A liquid-vapor separation unit, for example, an automotive oil and gas recovery (ORVR) valve, that is, a device that recovers steam when the tank is replenished with fuel, or an automobile diagnostic (OBD) 3 Any combination of at least two types of fittings may be used, and there may be several identical fittings. According to this embodiment, the fitting is integrated with the panel, i.e., it is mechanically coupled to the panel. The fitting is attached to the panel by any mechanical means which is compatible with the type of tank, the nature of the liquid and the gas stored therein and the normal use provided by the tank. The plate can provide a solid 20 bucket 04

St:: means. It is also possible to use, for example, to attach the accessory by using the board to slap, slap, and set. Such devices include, for example, and the like. It can also be used at the time of production, that is, by means of, for example, a means. It is also possible to use a more permanent attachment: it is usually better to attach one

The sump is attached to the slab. The slat is attached to the slab. The fitting can include at least one passage through the slab and is slid by the opening. The wire may be in a shape that is only likely to be in close contact with the environment to be closed and the attachment and volume. The plate is attached to the liquid-steaming through the hole through the vapor of the plate to escape the conduit, resulting in

= Fortune provides - a kind of secret closure - storage - opening method, including the following (four) · (4) The following ingredients are dry: (1) _ weight injury of the poly-fruit fat '(8) G. 5 to 6G parts by weight _ nature a nanocomposite, which is composed of a layered clay and at least one resin having a barrier/biomass selected from the group consisting of a polyethylene compound, a poly-amine ion-type compound, and a group consisting of polyacetone, and (from) i to 30 parts by weight of a compatibilizer; (1) by molding a sheet comprising a layer formed of a nanocomposite composition And (C) dissolve the plate around the opening of the sump to close the opening. 21 1333464 The boards used in this method are available from a variety of sources. For example, it can be manufactured independently of the sump itself, either at the same time as the manufacturing tank, or at the same time, by a specific method (not necessarily the same as the one for manufacturing the sump). For example, the panel can be obtained by compression molding followed by coextrusion. It can also be obtained using one of many known forming techniques. Such techniques can be, for example, blow molding, compression forming, injection molding, and thermoforming. When the plate is manufactured separately from the sump, the opening in the sump is made to be slightly smaller in size than the sump, and then the opening is closed by a splicing plate. In a variant, the plate can be used with the sump It is manufactured at the same time and cut from the plastic used to make the storage tank. This mode of operation is particularly advantageous from the point of view of the simultaneous manufacture of the storage tank and its associated accessories. For example, it is possible to cut the plate directly from the groove wall area after the sump is manufactured, or from one of the sump portions. This variant also assumes that the innermost outer layer of the multi-layer construction of the sump is compatible with the outermost layer. Another variation is to cut the panel from the waste material from which the sump is made, but Φ the waste material has a suitable multilayer structure. The plate can also be cut from a sump extension specifically designed for use in a panel and fabricated simultaneously with the sump. Finally, the same layer as the wall of the sump can be formed by pressurizing the two layers to produce the same layer comprising the two layers of the sump wall structure. In this case, for example, a specific portion of the parison used to make the sump can also be compressed. In such a production, it is particularly advantageous to pressurize the layers of the same structure against the model of the production tank. The operation of welding the plate to the sump can be carried out in accordance with conventional techniques. 22 1333464 For example, 'hot plate _, shock splicing or lightning (four) connection technology can be used. Preferably, it is a hot plate fusion technique. According to a particular embodiment of the method of the invention, at least one of the fittings is attached to the plate and towards the side of the interior of the sump. In general, any attachment method that is compatible with the storage tank, the nature of the liquid, and the gases being stored and its conditions of use will apply. However, it is preferred to perform the attachment by the method of joining. • The term “attachment” and “the side facing the inside of the tank” have the same meaning as described above in the closed system. In accordance with a particular embodiment of the method of the present invention, a first modification package includes at least one fitting to the plate prior to the attachment of the plate to which the fitting is attached. In this way, the board acts as a support accessory and allows it to be easily inserted into the sump. In contrast, the attachment of the second change comprises: in the first step, attaching the spring accessories to the inner wall of the sump adjacent to the opening, and in the subsequent second step, the component is transferred to the accessory by the (four) And opening the sump (4) 0 regardless of any particular embodiment of the method, when the sump is subjected to force for any reason (eg, by its own weight, or during splicing, perpendicular to the surface of the sump) When a soft deformation of the sheep occurs in the vicinity of the opening, a problem occurs during the operation of the plate to be welded to the groove wall. This situation does occur when the tank is directly from the production line and the bath wall temperature is still quite high. Another reason is that the diameter of the opening is quite large, so that the edge of the opening is attached to 23 1333464. The present invention is also directed to the problem of softening deformation of the groove wall by the formation of the wall-shaped convex portion branch #opening groove wall when the plate is welded. The protrusion can be formed on the outer wall of the sump near the opening. The groove wall here can be supported by the jig holding the convex portion. A convex portion similar to the above can also be used to prevent deformation of the groove I when the plate is cut from the groove wall. The convex portion may also cause any uniformity of the surface of the sump before the correction (4) operation. Finally, these also help to perfectly match the shape of the outer surface of the sump to the plate. The invention also relates to the above-mentioned green (four), secret material_opening of the fuel tank, especially the fuel tank of the steam locomotive. The term "motor vehicle" is used to refer to a vehicle that is started by an internal combustion engine, such as a truck, car or locomotive. Hereinafter, the present invention will be explained in more detail with reference to the accompanying drawings. The first figure is a cross-sectional view of a closed "closed tank" by the present invention. A tank 10 has a single-layer structure in which an opening is closed by a plate 6 with two fittings and is provided with a barrier property. The nanocomposite composition is formed. According to the single layer structure of a wall 2 of a storage tank 10, a siphon tube i is fastened to one edge 3 of the wall 2 of the storage tank 10. A discharge R〇v valve 5 has a float 4 and is provided. a polyacetal baffle for fastening to the siphon tube. The plate 6 comprising a single layer structure formed of a nanocomposite composition having a barrier property is formed by thermoforming so that the surrounding regions 78 and 11 Gradually shrinking. The plate 6 is welded to the outside of the storage tank by hot plate welding. Table 24 J353464 In a variant, the interlayer is formed. According to this variation, the multilayer structure may also comprise two different layers of identical construction, = In a preferred embodiment, the plate has two layers which are the same as the wall of the groove so that the laminate is formed on the edge of the structure of the two walls and the groove, and the embossing is formed on the top of the plate. The thickness is reduced. This: each layer in the sub-convex (especially, the point outside the barrier layer can be One step _ the transfer wheel is located in the refining of the plate and the sump. According to a preferred method of the method of the present invention, the laser ray is introduced into the shrinkage zone in contact with the outer surface of the sump: by laser or infrared ray The composition to be melted has a preferred composition of two pairs of lasers or a composition that is opaque to infrared rays. Conventional: refers to or reflects most of the level of infrared radiation, and examples of such compositions are carbon. Black filler. This person: The polymer material is well distributed evenly below the layer directly adjacent to the groove wall, and the invention is explained in more detail with reference to examples. However, these examples are for illustrative purposes only and are not This limitation is the present invention. The materials used in the following examples are listed as follows: -EVOH ·· E105B, Japan Kuraray Corporation - Nylon 6 : EM 500, Korea KP Chemical Company - Ionic Polymers · SURLYN 8527, DuPont 8 1 25 1333464

-HDPE-g-MAH : Compatibilizer, PB3009, CRAMPTON Company -HMWPE : High molecular weight polyethylene resin, PB150, Korea LG

Daesan Petrochemical Company

- Clay: Cloisite 20A, SCP - Thermal stabilizer: IR 1098, Songwon Industrial Co., Ltd. - Adhesive: AB130, LG Chemical Co., Korea [Preparation Example 1] Preparation of EVOH-layered clay composite 97% by weight of ethylene - Vinyl alcohol copolymer (EVOH) (E-105B (ethylene content: molar ratio 44%), 曰Kuraray company; melt index · 5.5g/10 minutes, density: i.i4g/cm3) added to the co-rotating twin-screw extrusion In the main feed hopper of the machine (Φ40) (Korea sMPlatek company). Then '% by weight of organic modified montmorillonite (cloisite 2〇A, American Southern Clay Products Company) as a layer of clay and Oi parts by weight of thermal stabilizer (IR 1098) 'based on the EVOH A total of 100 parts by weight of 'the organic modified montmorillonite was separately added to the twin-screw extruder side feed port' to prepare an EVOH/layered clay nanocomposite in the form of pellets. The extrusion was carried out under the following conditions: the extruder temperature was 18 〇 _19 〇 2 〇〇 _ 200-200-200-200 ° C, the screw rotation speed was 3 rpm, and the discharge rate was 30 kg/hr. [Preparation Example 2] Preparation of nylon 6-layered clay nanocomposite 97% by weight of polyamine (nylon 6, EN300) was added to the main feed hopper of the co-rotating twin-screw extruder (Φ40) (Korea sMPlatek) . 26 1333464 Then, 3.0% by weight of the organically modified montmorillonite is a layered clay and (U parts by weight of thermal stabilizer (IR 1〇98) based on the total weight of the polyamine (10) And the organic modified montmorillonite was separately added to the twin-screw extruder side feed port to prepare a polyamide/layered clay nano-composite in the form of particles. The extrusion was carried out under the following conditions: extruding machine The temperature is 220_225.245-245-245-245-245° (:, the screw rotation speed is 3 rpm, and the discharge rate is 40 kg/hr. « [Preparation Example 3] Ionic polymer - layered point soil Preparation of composites by weight percentage 97/ί> The ionic polymer was added to the main feed hopper of the co-rotating twin-screw extruder (Φ40) (SM Platek, Korea). Then, • 3.0% by weight of organically modified montmorillonite It is a layered clay and 0.1 part by weight of a thermal stabilizer (IR 1098) based on 100 parts by weight of the total amount of the ionic polymer, and the organically modified montmorillonite is separately added to the twin-screw extrusion Machine-side feed port 'Preparation of ionic polymer/layer in granular form The nanocomposite was extruded under the following conditions: the extruder temperature was 220-225-245-245-245-245-245 ° C, the screw rotation speed was 300 rpm, and the discharge rate was 40 kg/hr. 25 parts by weight of the EVOH nanocomposite prepared in Preparation Example 1, 5 parts by weight of one compatibilizer and 70 parts by weight of high density polyethylene were added to a dry blender (double cone mixer, MYDCM-100) Myeong Woo Micron System Co., Ltd., South Korea. After the mixture was dry blended for 30 minutes, the blend 27 1333464 was added to the main feed hopper of the blow molding machine and the extrusion temperature was 185-195-195-195 ° C to produce volume 7 One of the fuel tanks (weight: 6 kg) of the liters. The raft is obtained from the waste material from which the sump is made. The slab is cut from the sump extension sheet simultaneously with the slat trough. Therefore, the slab has the fuel The same composition of the storage tank. [Example 2] 25 parts by weight of the nylon 6 nanocomposite prepared in Preparation Example 2, 5 parts by weight of one compatibilizer and 70 parts by weight of high density polyethylene were added to a dry blender (double Cone mixer, MYDCM-l〇0 'Korean Mye〇ng W〇〇Micron System Company), using a roll-up stirrer. After the mixture is dry blended for 30 minutes, the blend is added to the main feed hopper of the blow molding machine and the extrusion temperature is 195-210-220-220. A fuel tank (weight: 6 kg) having a volume of 70 liters was produced. A plate was taken from the waste material from which the sump was made. The plate was cut from the sump extension sheet simultaneously with the sump. Thus the panel has the same composition as the fuel reservoir. [Example 3] 5 parts by weight of the nylon 6 nanocomposite prepared in Preparation Example 2, 2 parts by weight of one compatibilizer and 93 parts by weight of high density polyethylene were added to a dry blender (double cone mixer) , MYDCM-100, Myeong Woo Micron System, Korea). After the mixture was dry blended for 30 minutes, the blend was added to the main feed hopper of the blow molding machine at a temperature of 195-210-220-220 ° C to produce a fuel tank of 7 liters in volume (. Weight: 28 1333464 6kg). A plate is obtained from the waste from which the sump is made. The plate is cut from the sump extension sheet simultaneously with the sump. Therefore, the plate has the same composition as the fuel storage tank. [Example 4] 40 parts by weight of the nylon 6 nanocomposite prepared in Preparation Example 2, 20 parts by weight of one compatibilizer and 40 parts by weight of high density polyethylene were added to a dry blender (double cone type mixer) MYDCM-100' Korea Myeong Woo Micron System). After the mixture was dry blended for 30 minutes, the blend was placed in a main hopper of a blow molding machine at a temperature of 195-210-220-220 ° C to produce a fuel tank (weight: 6 kg) having a volume of 70 liters. A plate is obtained from the waste from which the sump is made. The plate is cut from the sump extension sheet simultaneously with the sump. Thus, the plate has the same composition as the fuel sump. [Example 5] 25 parts by weight of the ionic polymer nanocomposite prepared in Preparation Example 3' 5 parts by weight of a compatibilizer and 7 parts by weight of high-density polyethylene were added to a dry blender (double Cone mixer, MYDCM_1()(), Korea Foot (10) $ Woo Micron System). After the mixture is changed for % minutes, the push

The compound is added to the main feed hopper of the blow molding machine at a temperature of 240-265-265-265 〇C (4). From the manufacture of the sump 7 liters of one fuel tank (weight: the tank is simultaneously manufactured to extend the sump; 4 obtained - the plate. The plate is taken from the slab. Therefore, the plate has the fuel with the 29 1333464 The same composition of the storage tank. [Comparative Example 1] The HMWPE, the first adhesive, the EV0H, the second adhesive and the HMWPE were introduced into the blow molding machine with five extruders in this order, and then blow molded to produce HMWPE. / First adhesive / EV 〇 H / second adhesive / one of the HMWPE structure fuel tank (volume: 70 liters (weight: 6kg)). A board is obtained from the waste material from which the sump is manufactured. The sump extension piece which is simultaneously manufactured by the tank is cut out. Therefore, the board has the same composition as the @fuel sump. [Measurement of barrier properties] In each of the fuel tanks manufactured in Examples 1 to 5 and Comparative Example 1. Filling 30 kg of fuel C (toluene 5 〇% + isoxin sinter 50%), respectively, using Examples 1 to 5 and each of the plates manufactured in Comparative Example 1 and using hot plate welding, Examples 1 to 5 and Comparative Examples The opening of each fuel tank manufactured in 1 is closed. The structure is placed in a large supply box. These structures are placed at 4 〇. After 3 匚, the initial weight (WQ) is measured. After filling for 200 曰, the structure is taken out of the oven and weighed (W!) Loss weight is calculated by subtracting the final weight (W!) from the initial weight (W〇) (Wo-WD. • 30 1333464 Table 1 Results of fuel-barrier properties Example number Loss weight Example 1 10.3 Example 2 15.3 Example 3 14.9 Example 4 12.3 Example 5 17.1 Comparative Example 1 19.2 From the data shown in Table 1, it can be found that the closed system manufactured in Examples 1 to 5 exhibits superior fuel barrier properties compared to the closed system manufactured in Comparative Example 1. The availability is known from the above description. According to the invention, a closed system in the opening of the sump can reduce the loss of liquid and gas when compared with the conventional closed system, and the system can reduce the loss to a low degree. An environmental standard that is being implemented in the near future in Europe and the United States. According to the closed system of the present invention, a sump is manufactured using a nanocomposite composition having excellent barrier properties, and at the same time, the sump The first opening is closed by a plate made of a nanocomposite group having a barrier property. As a result, the closed system of the present invention can maintain the penetration and seepage of the contents of the sump even after a long period of use. Leakage inhibition function, and has excellent mechanical strength, exhibits high oxygen-barrier properties, organic solvent-barrier properties and moisture-barrier properties, and allows nanocomposite dimension 31 1333464 to hold its stripped morphology, of which The rice composite is dispersed in a polymer matrix in a special form, even after the forming process is completed. In accordance with the above description, those skilled in the art can carry out various embodiments of the present invention without departing from the scope and spirit of the invention. And amendments. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the Detailed Description The first figure is a cross-sectional view showing a closed system of an opening in a sump according to the present invention. [Main component symbol description] 1 Siphon tube 2 Groove wall 3 Groove wall edge 4 float 5 Emission ROV valve 6 Plate 7 Surrounding area 8 Surrounding area 9 Projection 10 Storage tank 11 Surrounding area 32

Claims (1)

1333464 X. Patent Application Range: 1. A system for closing an opening in a storage tank, the system comprising a plate welded to a groove wall around an opening of the storage tank, wherein the plate comprises a barrier property The nanocomposite composition is formed in a layer form, and the nanocomposite composition is prepared by dry blending the following components: (a) 1 〇〇 heavy wounded smoky resin '(b) 0.5 to 60 weight The nanocomposite having a barrier property consisting of layered clay and at least one resin having barrier properties selected from the group consisting of ethylene-vinyl alcohol copolymer, polyamine, A group consisting of an ionic polymer and polyvinyl alcohol' and (c) 1 to 30 parts by weight of a compatibilizer. - 2. The system of claim 1, wherein the nanocomposite has a barrier property resin to layered clay weight ratio ranging from 58.0: 42.0 to 99.9: 0.1. 3. The system of claim 1, wherein the layered clay is one or more selected from the group consisting of montmorillonite, bentonite (bentonite, • bent〇nite), kaolinite, mica, and lithium montmorillon Stone (hectorite, hect〇rite), fluorohectorite, saponite, beidellite, nontronite, stevensite, insect to stone ( Vermicullite), hallosite, volkonstoite, suconite, magadite, kenyalite, and a mixture of such mixtures. 4. The system of claim 1, wherein the layered clay of the nanocomposite having barrier properties comprises from 1 to 45% by weight of organic modified 33 1333464. 5. The system of claim 4, wherein the organic modifier is selected from the group consisting of primary ammonium, secondary ammonium, tertiary ammonium, quaternary ammonium, scaly salt, maleate, succinate, acrylic acid An organic material in which a functional group is selected from the group consisting of a salt, a benzylic acid group, an oxazoline, and a distearyldimethylammonium group. 6. The system of claim 1, wherein the ethylene-vinyl alcohol copolymer has an ethylene content molar ratio of from 10 to 50%. 7. The system of claim 1, wherein the polyamine is selected from the group consisting of 1) nylon 46, 2) nylon 6, 3) nylon 66, 4) nylon 610, 5) nylon 7, 6) nylon 8, 7) Nylon 9, 8) Nylon 11, 9) Nylon 12, 10) Nylon 46, 11) MXD6, 12) Amorphous Polyamide, 13) Two or more of polyamines 1) to 12) a polyamine copolymer, one of polyamines, and 14) a mixture of two or more polyamines of polyamines 1) to 12). 8. The system of claim 7, wherein the amorphous polyamine has a glass transition temperature (Tg) ranging from 80 ° C to 130 ° C. 9. The system of claim 7, wherein the amorphous polyamine is selected from the group consisting of hexamethylenediamine isophthalamide, hexamethylenediaminem-benzoic acidamine/pair a phthalimin terpolymer wherein the ratio of the phthalic acid/terephthalic acid is between 99/1 and 60/40, 2,2,4- and 2,4,4- a mixture of trimethyl hexamethylenediamine terephthalamide, and isophthalic acid, terephthalic acid or a mixture thereof with hexamethylenediamine or 2-mercaptopentamethylenediamine a group consisting of copolymers. 10. The system of claim 9, wherein the amorphous polyamine is a hexamethylenediamine isophthalamide/p-xylyleneamine terpolymer.