AU2020100383A4 - Production Method of Corrosion-Resistant and High-Strength FRP Storage Tank - Google Patents

Production Method of Corrosion-Resistant and High-Strength FRP Storage Tank Download PDF

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Publication number
AU2020100383A4
AU2020100383A4 AU2020100383A AU2020100383A AU2020100383A4 AU 2020100383 A4 AU2020100383 A4 AU 2020100383A4 AU 2020100383 A AU2020100383 A AU 2020100383A AU 2020100383 A AU2020100383 A AU 2020100383A AU 2020100383 A4 AU2020100383 A4 AU 2020100383A4
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layer
resin
winding
glassfiber
corrosion
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AU2020100383A
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Bao ENQUAN
Chen JINSONG
Xu LAN
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Jiangsu Marine Resources Development Research Institute Lian Yungang
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Jiangsu Marine Resources Development Res Institute Lian Yungang
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
    • B29C70/323—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core on the inner surface of a rotating mould
    • B29C70/326—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core on the inner surface of a rotating mould by rotating the mould around its axis of symmetry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a general shape other than plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
    • B32B5/266—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/82—Cores or mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/84—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0076—Curing, vulcanising, cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/77—Uncured, e.g. green
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

Abstract Provided is a production method of a corrosion-resistant and high-strength fiberglass-reinforced plastics (FRP) storage tank, including the following steps of: A, preparing an inner surface layer; B, curing the inner surface layer; C, preparing an impermeable layer; D, preparing a structure layer; E, preparing an outer protective layer; F, curing; and G, demoulding. The present invention has the beneficial effects of improving compressive strength and deformation resistance as well as achieving effective corrosion prevention; the impermeable layer is made of lining resin and glassfiber or chopped strand felt to protect the inner surface layer and improve its internal pressure resistance as well as to prevent leakage effectively; the structure layer is made of a glassfiber cloth circumferential winding layer and an alkali-free glassfiber spiral winding layer to enhance the tensile/compressive strength and improve the strength of the tank by compact winding. Drawings Fi. Fig. 1

Description

Description
Production Method of Corrosion-Resistant and High-Strength FRP Storage Tank
Technical Field
The present invention relates to a fiberglass-reinforced plastics (FRP) pipe and a production method thereof, in particular to a corrosion-resistant and high-strength FRP storage tank and a production method thereof.
Background Art
FRP container has the advantages of convenient transportation, batch production, light weight and the like, and it has been widely used. However, compared with the same kind of metal tank, the FRP container has poorer mechanical strength at present. In the prior art, as disclosed in a Chinese utility model (CN202864939U), namely, FRP tank, although the tank may achieve higher mechanical strength, firmness and compression resistance by means of reinforcing rings, there are poor long-term stability resistance, tensile strength and poor compressive strength in the non-reinforced inner surface layer, impermeable layer and the non-reinforced structure layer; meanwhile, the FRP storage tank fails to achieve an ideal application effect in corrosion-resistant cases.
Summary of the Invention
In order to solve the above problems, the present invention provides a corrosion-resistant and high-strength FRP storage tank and a production method; the technical solution adopted is as follows:
A production method of a corrosion-resistant and high-strength FRP storage tank includes the following steps of:
A, preparing an inner surface layer: preparation of inner surface resin, uniformly dripping the inner surface resin on a cylindrical pipeline mandrel of a winding machine, winding a layer of glassfiber surfacing felt on the pipeline mandrel, uniformly dripping the inner surface resin thereon again, winding a layer of organic fiber polyester felt on the pipeline mandrel, and uniformly dripping the inner surface resin thereon again, winding a layer of gridding cloth on the pipeline mandrel; wherein it should be ensured that the inner surface resin flows and permeates throughout the surface of the whole pipeline mandrel without any omission during dripping process each time;
B, curing the inner surface layer: hoisting the inner surface layer and the pipeline mandrel onto a curing machine for heating and curing until there is no sticky feeling on the inner surface layer, and mounting the inner surface layer and the pipeline mandrel on the winding machine;
C, preparing an impermeable layer: the same as the process A, preparing an inner surface layer;
D, preparing a structure layer: preparation of structure-layer resin, winding glassfiber cloth permeated by structure-layer resin on the pipeline mandrel in an annular mode, then winding alkali-free glassfiber permeated by structure-layer resin on the pipeline mandrel in a spiral mode; where the annular winding mode refers to a circumferential winding mode of glassfiber cloth via compact disposable yam, and the spiral winding mode refers to a spiral winding mode of alkali-free glassfiber via reusable spaced yam; annular winding and spiral winding should be arranged at intervals to wind on the required layers according to process requirements;
E, preparing an outer protective layer: the same as the above-mentioned step A, preparing an inner surface layer;
F, curing: hoisting the wound outer protective layer and the pipeline mandrel onto a curing machine for heating and curing, and naturally cooling after curing;
G, demoulding: demoulding the pipeline to obtain the corrosion-resistant and high-strength FRP tank.
Preferably, the glassfiber surfacing felt is plied-yam felt chopped by glassfiber strand, and the organic fiber polyester felt is lightweight spun yam-shaped felt of synthetic fiber, and the gridding cloth layer is meshed textile cloth of chemical fiber.
Preferably, the winding angle of the glassfiber cloth circumferential winding layer ranges within 60°-90°, and the winding angle of the alkali-free glassfiber spiral winding layer ranges within 45°-60°, and each of the glassfiber cloth circumferential winding layer and the alkali-free glassfiber spiral winding layer should be free from any gap and overlap to fully cover the cylindrical surface to be wound.
Preferably, the winding angle of the glassfiber cloth circumferential winding layer is preferably 75°, and the winding angle of the alkali-free glassfiber spiral winding layer is preferably 50°.
Preferably, the outer protective layer is made of a resin-rich layer or an anti-aging gel coat; an ultraviolet light absorber may be added to the resin-rich layer as an indoor product, and the anti-aging gel coat is selected as an outdoor product to delay UV-irradiation aging.
Preferably, thickness of the outer protective layer is less than 1mm.
Preferably, the inner surface resin is prepared by uniformly mixing the following raw materials of unsaturated polyester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 90%-95%, and wall thickness ranges within l-6mm; the impermeable-layer resin is prepared by uniformly mixing the following raw materials of vinyl ester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 70%-80%, and wall thickness ranges within l-6mm; the structure-layer resin is prepared by uniformly mixing the following raw materials of unsaturated o-phthalate or m-phthalate polyester resin according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 30%-40%, and wall thickness ranges within l-6mm.
Based on the product manufactured by the method above, the storage tank is a cylindrical pipe and includes an inner surface layer, an impermeable layer, a structure layer and an outer protective layer, where the inner surface layer is formed by impregnating and sticking a glassfiber surfacing felt layer, an organic fiber polyester felt layer and a gridding cloth layer via resin thereon from inside to outside in sequence; the impermeable layer is composed of lining resin and glassfiber or chopped strand felt; the structure layer consists of one or more glassfiber cloth circumferential winding layers and one or more alkali-free glassfiber spiral winding layers as well as the structure-layer resin, where circumferential winding layers and spiral winding layers are arranged at intervals; the outer protective layer is composed of a resin-rich layer or an anti-aging gel coat.
The present invention has the following beneficial effects: the glassfiber surfacing felt layer, the organic fiber polyester felt layer and the gridding cloth layer are adopted as the inner surface layer of the tank to improve compressive strength and deformation resistance as well as to achieve effective corrosion resistance; the impermeable layer is made of lining resin and glassfiber or chopped strand felt to protect the inner surface layer, improve the internal pressure resistance thereof and to achieve effective leakage prevention; the structure layer is composed of one or more glassfiber cloth circumferential winding layers and one or more alkali-free glassfiber spiral winding layers to enhance axial tensile strength and radial compressive strength by compact winding, which is beneficial to improving the strength of the whole tank; different resins may be selected as the outer protective layer according to different application places of products, which has the advantages of flexibility, low cost and the like. Due to the application of the technical solution above, the FRP tank has the advantages of corrosion resistance, high strength, low cost, long service life, etc.
Brief Description of the Drawings
FIG. 1 denotes a schematic diagram showing cross section of the present invention.
In the figure: 1 denotes an inner surface layer of FRP tank, 2 denotes an impermeable layer, 3 denotes a structure layer, and 4 denotes an outer protective layer.
Detailed Description of the Invention
Embodiment 1
A production method of a corrosion-resistant and high-strength FRP storage tank includes the following steps of:
A, preparing an inner surface layer: preparation of inner surface resin, uniformly dripping the inner surface resin on a cylindrical pipeline mandrel of a winding machine, winding a layer of glassfiber surfacing felt on the pipeline mandrel, uniformly dripping the inner surface resin thereon again, winding a layer of organic fiber polyester felt on the pipeline mandrel, and uniformly dripping the inner surface resin thereon again, winding a layer of gridding cloth on the pipeline mandrel; where it should be ensured that the inner surface resin flows and permeates throughout the surface of the whole pipeline mandrel without any omission during dripping process each time;
B, curing the inner surface layer: hoisting the inner surface layer and the pipeline mandrel onto a curing machine for heating and curing until there is no sticky feeling on the inner surface layer, and mounting the inner surface layer and the pipeline mandrel on the winding machine;
C, preparing an impermeable layer: the same as the process A, preparing an inner surface layer;
D, preparing a structure layer: preparation of structure-layer resin, winding glassfiber cloth permeated by structure-layer resin on the pipeline mandrel in an annular mode, then winding alkali-free glassfiber permeated by structure-layer resin on the pipeline mandrel in a spiral mode; where the annular winding mode refers to a circumferential winding mode of glassfiber cloth via compact disposable yam, and the spiral winding mode refers to a spiral winding mode of alkali-free glassfiber via reusable spaced yam; annular winding and spiral winding should be arranged at intervals to wind on the required layers according to process requirements;
E, preparing an outer protective layer: the same as the above-mentioned step A, preparing an inner surface layer;
F, curing: hoisting the wound outer protective layer and the pipeline mandrel onto a curing machine for heating and curing, and naturally cooling after curing;
G, demoulding: demoulding the pipeline to obtain the corrosion-resistant and high-strength FRP tank.
The glassfiber surfacing felt is plied-yam felt chopped by glassfiber strand, and the organic fiber polyester felt is lightweight spun yam-shaped felt of synthetic fiber, and the gridding cloth layer is meshed textile cloth of chemical fiber.
The winding angle of the glassfiber cloth circumferential winding layer is 60°, and the winding angle of the alkali-free glassfiber spiral winding layer is 45°, and each of the glassfiber cloth circumferential winding layer and the alkali-free glassfiber spiral winding layer should be free from any gap and overlap to fully cover the cylindrical surface to be wound.
The outer protective layer is made of a resin-rich layer or an anti-aging gel coat; an ultraviolet light absorber may be added to the resin-rich layer as an indoor product, and the anti-aging gel coat is selected as an outdoor product to delay UV-irradiation aging, and thickness of the outer protective layer is less than 1mm.
The inner surface resin is prepared by uniformly mixing the following raw materials of unsaturated polyester resin, accelerant and curing agent according to the corresponding ratio of
100: 0.4-3: 0.8-5, where the resin content ranges within 90%-95%, and wall thickness ranges within l-6mm; the impermeable-layer resin is prepared by uniformly mixing the following raw materials of vinyl ester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 70%-80%, and wall thickness ranges within l-6mm; the structure-layer resin is prepared by uniformly mixing the following raw materials of unsaturated o-phthalate or m-phthalate polyester resin according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 30%-40%, and wall thickness ranges within l-6mm.
As shown in FIG.l, based upon the product manufactured by the method above, the storage tank is a cylindrical pipe and includes an inner surface layer 1, an impermeable layer 2, a structure layer 3 and an outer protective layer 4, where the inner surface layer is formed by impregnating and sticking a glassfiber surfacing felt layer, an organic fiber polyester felt layer and a gridding cloth layer via resin thereon from inside to outside in sequence; the impermeable layer is composed of lining resin and glassfiber or chopped strand felt; the structure layer consists of one or more glassfiber cloth circumferential winding layers and one or more alkali-free glassfiber spiral winding layers as well as the structure-layer resin, where circumferential winding layers and spiral winding layers are arranged at intervals; the outer protective layer is composed of a resin-rich layer or an anti-aging gel coat.
Embodiment 2
The preparation method is the same as Embodiment 1 except that:
the winding angle of the glassfiber cloth circumferential winding layer to the winding layer is 75°, and the winding angle of the alkali-free glassfiber spiral winding layer is 50°;
the inner surface resin is prepared by uniformly mixing the following raw materials of unsaturated polyester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 90%-95%, and wall thickness ranges within l-6mm; the impermeable-layer resin is prepared by uniformly mixing the following raw materials of vinyl ester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 70%-80%, and wall thickness ranges within l-6mm; the structure-layer resin is prepared by uniformly mixing the following raw materials of unsaturated o-phthalate or m-phthalate polyester resin according to the corresponding ratio of 100: 0.4-3: 0.8-5,
2020100383 12 Mar 2020 where the resin content ranges within 30%-40%, and wall thickness ranges within l-6mm.
Embodiment 3
The preparation method is the same as Embodiment 1 except that:
the winding angle of the glassfiber cloth circumferential winding layer to the winding layer is 90°, and the winding angle of the alkali-free glassfiber spiral winding layer is 60°;
the inner surface resin is prepared by uniformly mixing the following raw materials of unsaturated polyester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 90%-95%, and wall thickness ranges within l-6mm; the impermeable-layer resin is prepared by uniformly mixing the following raw materials of vinyl ester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 70%-80%, and wall thickness ranges within l-6mm; the structure-layer resin is prepared by uniformly mixing the following raw materials of unsaturated o-phthalate or m-phthalate polyester resin according to the corresponding ratio of 100: 0.4-3: 0.8-5, where the resin content ranges within 30%-40%, and wall thickness ranges within l-6mm;
compared with a conventional storage tank, contrast effect is as shown in table below.
Category Winding angle of the glassfiber cloth circumferential winding layer Winding angle of the alkali-free glassfiber spiral winding layer Improvement of compressive strength Improvement of deformation resistance
Embodiment 1 60° 45° 75% 80%
Embodiment 2 75° 50° 80% 85%
Embodiment 3 90° 60° 80% 85%
Common FRP storage tank 0-60° 0-45° 15% 18%

Claims (8)

  1. Claims
    1. A production method of a corrosion-resistant and high-strength FRP storage tank, characterized by comprising the following steps of:
    A, preparing an inner surface layer: preparation of inner surface resin, uniformly dripping the inner surface resin on a cylindrical pipeline mandrel of a winding machine, winding a layer of glassfiber surfacing felt on the pipeline mandrel, uniformly dripping the inner surface resin thereon again, winding a layer of organic fiber polyester felt on the pipeline mandrel, and uniformly dripping the inner surface resin thereon again, winding a layer of gridding cloth on the pipeline mandrel; wherein it should be ensured that the inner surface resin flows and permeates throughout the surface of the whole pipeline mandrel without any omission during dripping process each time;
    B, curing the inner surface layer: hoisting the inner surface layer and the pipeline mandrel onto a curing machine for heating and curing until there is no sticky feeling on the inner surface layer, and mounting the inner surface layer and the pipeline mandrel on the winding machine;
    C, preparing an impermeable layer: the same as the process A, preparing an inner surface layer;
    D, preparing a structure layer: preparation of structure-layer resin, winding glassfiber cloth permeated by structure-layer resin on the pipeline mandrel in an annular mode, then winding alkali-free glassfiber permeated by structure-layer resin on the pipeline mandrel in a spiral mode; wherein the annular winding mode refers to a circumferential winding mode of glassfiber cloth via compact disposable yam, and the spiral winding mode refers to a spiral winding mode of alkali-free glassfiber via reusable spaced yam; annular winding and spiral winding should be arranged at intervals to wind the required layers according to process requirements;
    E, preparing an outer protective layer: the same as the above-mentioned step A, preparing an inner surface layer;
    F, curing: hoisting the wound outer protective layer and the pipeline mandrel onto a curing machine for heating and curing, and naturally cooling after curing;
    G, demoulding: demoulding the pipeline to obtain the corrosion-resistant and high-strength FRP tank.
  2. 2. The production method of corrosion-resistant and high-strength FRP storage tank according to claim 1, characterized in that the glassfiber surfacing felt is plied-yam felt chopped by glassfiber strand, and the organic fiber polyester felt is lightweight spun yam-shaped felt of synthetic fiber, and the gridding cloth layer is meshed textile cloth of chemical fiber.
  3. 3. The production method of corrosion-resistant and high-strength FRP storage tank according to claim 1, characterized in that the winding angle of the glassfiber cloth circumferential winding layer ranges within 60°-90°, and the winding angle of the alkali-free glassfiber spiral winding layer ranges within 45°-60°, and each of the glassfiber cloth circumferential winding layer and the alkali-free glassfiber spiral winding layer should be free from any gap and overlap to fully cover the cylindrical surface to be wound.
  4. 4. The production method of corrosion-resistant and high-strength FRP storage tank according to claim 1, characterized in that the winding angle of the glassfiber cloth circumferential winding layer is preferably 75°, and the winding angle of the alkali-free glassfiber spiral winding layer is preferably 50°.
  5. 5. The production method of corrosion-resistant and high-strength FRP storage tank according to claim 1, characterized in that the outer protective layer is made of a resin-rich layer or an anti-aging gel coat; an ultraviolet light absorber may be added to the resin-rich layer as an indoor product, and the anti-aging gel coat is selected as an outdoor product to delay UV-irradiation aging.
  6. 6. The production method of corrosion-resistant and high-strength FRP storage tank according to claim 1, characterized in that thickness of the outer protective layer is less than 1mm.
  7. 7. The production method of corrosion-resistant and high-strength FRP storage tank according to claim 1, wherein the inner surface resin is prepared by uniformly mixing the following raw materials of unsaturated polyester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, wherein the resin content ranges within 90%-95%, and wall thickness ranges within 1 -6mm; the impermeable-layer resin is prepared by uniformly mixing the following raw materials of vinyl ester resin, accelerant and curing agent according to the corresponding ratio of 100: 0.4-3: 0.8-5, wherein the resin content ranges within 70%-80%, and wall thickness ranges within l-6mm; the structure-layer resin is prepared by uniformly mixing the following raw materials of unsaturated o-phthalate or m-phthalate polyester resin according to the corresponding ratio of 100: 0.4-3: 0.8-5, wherein the resin content ranges within 30%-40%, and wall thickness ranges within l-6mm.
  8. 8. The production method of corrosion-resistant and high-strength FRP storage tank according to claim 1, characterized in that the storage tank is a cylindrical pipe, comprising an inner surface layer, an impermeable layer, a structure layer and an outer protective layer, wherein the inner surface layer is formed by impregnating and sticking a glassfiber surfacing felt layer, an organic fiber polyester felt layer and a gridding cloth layer via resin thereon from inside to outside in sequence; the impermeable layer is composed of lining resin and glassfiber or chopped strand felt; the structure layer consists of one or more glassfiber cloth circumferential winding layers and one or more alkali-free glassfiber spiral winding layers as well as the structure-layer resin, wherein circumferential winding layers and spiral winding layers are arranged at intervals; the outer protective layer is composed of a resin-rich layer or an anti-aging gel coat.
AU2020100383A 2020-03-12 2020-03-12 Production Method of Corrosion-Resistant and High-Strength FRP Storage Tank Ceased AU2020100383A4 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113942244A (en) * 2021-09-15 2022-01-18 中国化学工程第六建设有限公司 Glass fiber reinforced plastic storage tank on-site assembling construction process
CN113997579A (en) * 2021-11-05 2022-02-01 南京恒倍特玻璃钢有限公司 Manufacturing process of heat-insulating shell of glass fiber reinforced plastic integrated pump station and heat-insulating shell thereof
CN114536926A (en) * 2022-03-23 2022-05-27 株洲中铁电气物资有限公司 Pipeline with camouflage effect and preparation method thereof
WO2022151929A1 (en) * 2021-01-15 2022-07-21 江南大学 Production method for large-diameter engineering pipeline
CN115214167A (en) * 2022-09-20 2022-10-21 太原理工大学 Equipment for manufacturing storage container by annularly and integrally winding multi-beam fiber double-layer spiral ring
CN113997579B (en) * 2021-11-05 2024-05-17 南京恒倍特玻璃钢有限公司 Manufacturing process of glass fiber reinforced plastic integrated pump station heat preservation shell and heat preservation shell

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022151929A1 (en) * 2021-01-15 2022-07-21 江南大学 Production method for large-diameter engineering pipeline
CN113942244A (en) * 2021-09-15 2022-01-18 中国化学工程第六建设有限公司 Glass fiber reinforced plastic storage tank on-site assembling construction process
CN113942244B (en) * 2021-09-15 2023-09-22 中国化学工程第六建设有限公司 Glass fiber reinforced plastic storage tank field assembly construction process
CN113997579A (en) * 2021-11-05 2022-02-01 南京恒倍特玻璃钢有限公司 Manufacturing process of heat-insulating shell of glass fiber reinforced plastic integrated pump station and heat-insulating shell thereof
CN113997579B (en) * 2021-11-05 2024-05-17 南京恒倍特玻璃钢有限公司 Manufacturing process of glass fiber reinforced plastic integrated pump station heat preservation shell and heat preservation shell
CN114536926A (en) * 2022-03-23 2022-05-27 株洲中铁电气物资有限公司 Pipeline with camouflage effect and preparation method thereof
CN115214167A (en) * 2022-09-20 2022-10-21 太原理工大学 Equipment for manufacturing storage container by annularly and integrally winding multi-beam fiber double-layer spiral ring
CN115214167B (en) * 2022-09-20 2022-12-09 太原理工大学 Equipment for manufacturing storage container by annularly and integrally winding multi-beam fiber double-layer spiral ring

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