CN104089105A - Method for manufacturing bamboo-plastic winding composite pipe - Google Patents
Method for manufacturing bamboo-plastic winding composite pipe Download PDFInfo
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- CN104089105A CN104089105A CN201410319366.5A CN201410319366A CN104089105A CN 104089105 A CN104089105 A CN 104089105A CN 201410319366 A CN201410319366 A CN 201410319366A CN 104089105 A CN104089105 A CN 104089105A
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- bamboo strips
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- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000004804 winding Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 229920003023 plastic Polymers 0.000 title abstract description 7
- 239000004033 plastic Substances 0.000 title abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 180
- 239000004576 sand Substances 0.000 claims abstract description 118
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 103
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 103
- 241001330002 Bambuseae Species 0.000 claims abstract description 103
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 103
- 239000011425 bamboo Substances 0.000 claims abstract description 103
- 229920005989 resin Polymers 0.000 claims abstract description 66
- 239000011347 resin Substances 0.000 claims abstract description 66
- 230000008719 thickening Effects 0.000 claims abstract description 25
- 238000013461 design Methods 0.000 claims abstract description 8
- 238000009941 weaving Methods 0.000 claims description 61
- 239000003292 glue Substances 0.000 claims description 42
- 239000000377 silicon dioxide Substances 0.000 claims description 30
- 238000002360 preparation method Methods 0.000 claims description 26
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 244000035744 Hura crepitans Species 0.000 claims description 13
- 229920003180 amino resin Polymers 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 239000011295 pitch Substances 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 238000009940 knitting Methods 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000001802 infusion Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 239000013521 mastic Substances 0.000 abstract description 7
- 239000010410 layer Substances 0.000 abstract 12
- 239000006004 Quartz sand Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 239000000945 filler Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 230000002262 irrigation Effects 0.000 description 3
- 238000003973 irrigation Methods 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000009428 plumbing Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- 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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/142—Laminating of sheets, panels or inserts, e.g. stiffeners, by wrapping in at least one outer layer, or inserting into a preformed pocket
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/12—Coatings characterised by the materials used by tar or bitumen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- 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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
- B32B2037/1215—Hot-melt adhesive
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a method for manufacturing a bamboo-plastic winding composite pipe. A lining layer, an inner enhancement layer, a thickening layer, an outer enhancement layer and an outer protective layer which are arranged on the bamboo-plastic winding composite pipe from inside to outside in the radial direction are manufactured in sequence. The method for manufacturing the bamboo-plastic winding composite pipe is characterized by comprising the steps that when the inner enhancement layer is manufactured, a bamboo skin belt is annularly and spirally wound outside the lining layer in a crossed mode layer by layer until a design thickness is achieved, a resin mixture is added while winding is conducted, so that the inner enhancement layer is formed, sand mastic is attached to the bamboo skin belt, the bamboo skin belt and the sand mastic are evenly wound outside the inner enhancement layer, the sand mastic forms the inner enhancement layer, meanwhile, the bamboo skin belt forms the outer enhancement layer, the mass ratio of quartz sand in the sand mastic is 75%-88%, and the mass ratio of resin is 12%-25%. By means of the method for manufacturing the bamboo-plastic winding composite pipe, the needs of different pipe diameters and sand adding thicknesses can be met, the production cost of the bamboo composite pipe is lowered, and processing efficiency is improved.
Description
Technical field
The present invention relates to a kind of preparation method of bamboo sand coiled composite tube, this bamboo sand coiled composite tube is applied to the fields such as agricultural irrigation, plumbing and petrochemical industry be anticorrosion.
Background technique
Giving agricultural irrigation, plumbing and the anticorrosion industry of petrochemical industry, generally adopt the conventional pipelines such as cement pipe, PVC＝polyvinyl chloride, polyethylene, polypropylene, Glass Steel Tube (cast, glass fiber reinforced plastic tubes, chamber for fibre-reinforced plastics sand inclusion pipe), steel pipe, ductile iron pipe at present.Cement pipe cost is low, but intensity is low, Heavy Weight, pipe joint leakiness; PVC＝polyvinyl chloride, polyethylene, polypropylene pipe light weight, smooth and corrosion-resistant, but deficiency and raw material are petrochemical industry synthetic products to some extent in Rigidity and strength aspect; That Glass Steel Tube and glass reinforced plastic sand pipe have advantages of is corrosion-resistant, intensity is high, fluid resistance is little, rigidity is large, but product adopts the glass fibre that main raw material reinforcing material is high energy consumption, resin is petrochemical industry synthetic products, and product and waste material are not recyclable, not environmental protection.The metallic conduit such as steel pipe, ductile iron pipe has the shortcoming of high energy consumption, high pollution, not environmental protection.Therefore use this class duct products, consuming a large amount of valuable petroleum resources, a large amount of energy consumption, resource is non-renewable and in process of production environmental pollution have larger pollution.The bamboo composite pipe of having invented in recent years meets the Advanced Ideas such as energy-conserving and environment-protective, resource are renewable, and price is lower than other conventional pipelines (except cement pipe), but uses field, particularly field of agricultural irrigation in the high rigidity of low-pressure, and price is still higher.For addressing this problem, urgent need is developed energy-conserving and environment-protective, resource is renewable, and the cheap especially novel pipeline of price substitutes.
The patent No. is 201320697993.3, in the Chinese patent that patent name is " thermosetting bamboo sand composite pressure pipe ", a kind of thermosetting bamboo sand composite pressure pipe is disclosed, it is radially respectively arranged with inside liner from the inside to the outside, interior enhancement layer, mastic bed, outer enhancement layer and external protection coating, it is characterized in that: between described inside liner and external protection coating, be disposed with from the inside to the outside the interior enhancement layer that thin bamboo strips used for weaving is entwined, the outer enhancement layer that the thickening layer that the stirring of ore in sand form glue forms and thin bamboo strips used for weaving are entwined, the preparation method of this pressure tube of part is disclosed in its specification, but the preparation method who does not relate to crucial mastic bed, the difficult point that mastic bed is made is silica sand in working process, the conveying of the mixing of resin and sand glue is wound around.
Summary of the invention
Technical problem to be solved by this invention is to overcome deficiency of the prior art and provide a kind of and be applicable to different tube diameters and add sand thickness demand, reduces the preparation method of the bamboo sand coiled composite tube of bamboo composite pipe cost of production.
The technological scheme that the present invention solves the problems of the technologies described above employing is: a kind of preparation method of bamboo sand coiled composite tube, prepare successively radially inside liner from the inside to the outside of this bamboo sand coiled composite tube, interior enhancement layer, thickening layer, outer enhancement layer and external protection coating, it is characterized in that: in preparation during enhancement layer, by thin bamboo strips used for weaving band successively hoop spiral cross winding outside inside liner until design thickness, when being wound around, add resin compound, enhancement layer in forming, on thin bamboo strips used for weaving band, adhere to sand glue, thin bamboo strips used for weaving band and sand glue are wrapped in outside interior enhancement layer equably, when sand glue forms thickening layer, thin bamboo strips used for weaving band forms outer enhancement layer, in described sand glue, silica sand mass ratio is 75%-88%, resin quality is than being 12%-25%.The present invention adopts thin bamboo strips used for weaving band as the bearing material of sand glue, and thickening layer and outer enhancement layer are synchronously made, and has simplified production stage, has improved manufacturing efficiency.The sand glue of above-mentioned formula can meet difference and add sand method and add the demand of sand thickness, and the composite pipe finished product that makes to make meets the user demand of the high rigidity of low-pressure.
When the present invention prepares outer enhancement layer, according to design thickness, require that independent thin bamboo strips used for weaving band is continued to successively hoop spiral cross winding and, outside adhering to that layer of thin bamboo strips used for weaving band of sand glue, when being wound around, add resin compound.The present invention is distributed in internal layer and the skin of stress maximum by bending by large interior enhancement layer and the outer enhancement layer of intensity, and the lower thickening layer of intensity is distributed in both centres, and structure is more reasonable.Outer enhancement layer can adopt separately thin bamboo strips used for weaving band to continue hoop spiral cross winding according to designing requirement, to increase thickness.
The present invention adopts the mode of wet method sand adding to form thickening layer: in sandbox, holding thickness is 30 order ~ 120 object silica sands, sandbox is let slip a remark and is positioned at conveyor belt top, according to caliber and burning into sand thickness, by controlling the transfer rate of conveyor belt, measure sand production rate, resin enters stirring apparatus by resin infusion, the silica sand measuring is stirred into sand glue with mixed with resin by tape transport in stirring apparatus, in sand glue, silica sand mass ratio is 75%-88%, resin quality is than being 12%-25%, sand glue enters in the discharging bucket that is positioned over thin bamboo strips used for weaving band top by the delivery chute of stirring apparatus, the outlet of discharging bucket below and thin bamboo strips used for weaving band are with wide, sand glue drenches on the thin bamboo strips used for weaving band that drops on forward straight tube mould conveying winding, thin bamboo strips used for weaving band and sand glue uniform winding outside interior enhancement layer until reach appointed thickness, synchronously make thickening layer and outer enhancement layer.Adopting the benefit of wet method sand adding technique is that resin and silica sand are uniformly mixed fully, saves resin, and the thickness that once adds sand is simultaneously large, is applicable to make bigbore bamboo sand coiled composite tube.
The present invention adopts the mode of layering spray to form thickening layer: above thin bamboo strips used for weaving band, in sandbox, holding thickness is 30 order ~ 120 object silica sands, the bottom of sandbox has several measure-alike, be staggered front to back silica sand leak and the resin leak of arrangement, by adjusting silica sand leak size, control sand production rate, resin leak place is provided with resin pump and controls gel quantity, conveying along with thin bamboo strips used for weaving band, silica sand and resin form sand glue in the stack of thin bamboo strips used for weaving band higher slice, in sand glue, silica sand mass ratio is 75%-88%, resin quality is than being 12%-25%, thin bamboo strips used for weaving band and sand glue uniform winding outside interior enhancement layer until reach appointed thickness, synchronously make thickening layer and outer enhancement layer.Adopting the benefit of layering spray process is that machining operation is simple, and cost of production is low.
Thin bamboo strips used for weaving band its preparation method of the present invention is, mao bamboon is split into the thin bamboo strips used for weaving of long 0.5 ~ 3m, thick 0.5 ~ 1.5mm, wide 5 ~ 20mm, by thin bamboo strips used for weaving with lining cloth is bonding or sew up or weave and connect into a continuous thin bamboo strips used for weaving band.Bamboo is processed into as stated above and uses its benefit after thin bamboo strips used for weaving band is to have improved the utilization ratio of bamboo wood and the manufacturing efficiency that thin bamboo strips used for weaving is wound around.
Resin of the present invention is amino resin.Amino resin is with low cost and have good adhesive effect with bamboo wood material.
Inside liner preparation method of the present invention is coated one deck mould release film on straight tube mould, then with resin and bamboo fibre nonwovens or bamboo fiber knitting felt, make the inside liner of design thickness on straight tube mould, described resin is epoxy resin or unsaturated polyester resin.The inside liner antiseepage that said method is produced, anticorrosion, health and inner wall smooth, can meet the demand of different medium.
Resin compound of the present invention comprises the amino resin of 90%-97% and the bio-based filler of 3%-10%.The resin compound of above-mentioned formula promotes resin polymerization, increases bonding force.
The present invention treats that pipeline solidifies, and after finishing polishing, enhancement layer appearance is coated with last layer external protection coating outside, and external protection coating is epoxy resin, unsaturated polyester resin, paint or pitch.External protection coating has the effect of anticorrosion waterproof.
The present invention compared with prior art has the following advantages: wet method sand adding method of the present invention, and resin and silica sand are uniformly mixed fully, have saved resin, and the thickness that once adds sand is large, is applicable to the preparation of heavy caliber bamboo sand coiled composite tube.Described layering spraying method, equipment investment cost is low, simple to operate, and the thickness that adds sand is less, is applicable to the preparation of small-bore bamboo sand coiled composite tube.Two kinds of methods add in sand process utilizes thin bamboo strips used for weaving band to carry sand glue, and thickening layer is synchronizeed and made with outer enhancement layer, has improved manufacturing efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of bamboo sand coiled composite tube of the present invention.
Fig. 2 is wet method sand adding device structure schematic diagram of the present invention.
Fig. 3 is layering sprinkling equipment structural representation of the present invention.
Embodiment
Embodiment 1
Described in the present embodiment, method is for the production of the bamboo-plastic combined pipeline of DN600, referring to Fig. 1, described pipeline its radially by being respectively inside liner 1, interior enhancement layer 2, thickening layer 3, outer enhancement layer 4 and external protection coating 5 outside interior.Its preparation method is:
1, fresh mao bamboon is split into 0.5 ~ 3m length, 0.5 ~ 1.5mm thickness, the wide thin bamboo strips used for weaving of 5 ~ 20mm, connects into a continuous thin bamboo strips used for weaving band with lining cloth braiding, and be rolled into volume.
2, on the steel through polishing that is 600mm at external diameter or glass fiber reinforced plastic straight pipe mould, coated one deck mould release film with resin and the bamboo fibre nonwovens of antiseptic property excellence, is made the inside liner that thickness reaches 1.5mm on pipe mold.Resin preferred epoxy or unsaturated polyester resin.
3, after inside liner solidifies, the bamboo of rolling is slightd to band to be contained on Stetch Wrapping Machine, by thin bamboo strips used for weaving band successively adopt hoop spiral cross winding in inside liner outside until design thickness, when being wound around, add the amino resin of having filled a prescription, this resin compound comprises the amino resin of 90%-97% and the bio-based filler of 3%-10%.Enhancement layer thickness 4mm in the present embodiment.
4, in the mode of wet method sand adding, make thickening layer.Referring to Fig. 2, in sandbox 11, holding thickness is 30 order～120 object silica sands, and sandbox 11 is let slip a remark and kept certain height distance with below conveyor belt 12.By controlling the transfer rate of conveyor belt 12, measure sand production rate, resin injects stirring apparatus 13 by resin pump at resin injection mouth 16, the silica sand measuring is transported to stirring apparatus 13 and stirs into sand glue with mixed with resin from material entrance 17, and material entrance 17 belows are provided with slide rail 18.The preferred amino resin of resin, in sand glue, silica sand mass ratio is 80%, amino resin mass ratio is 20%.Sand glue enters in the discharging bucket 15 that is positioned over thin bamboo strips used for weaving band top by the delivery chute 14 of stirring apparatus, discharging bucket 15 below outlets and thin bamboo strips used for weaving band A are with wide, sand glue drenches on the thin bamboo strips used for weaving band A that drops on forward straight tube mould conveying winding, thin bamboo strips used for weaving band and sand glue uniform winding are outside interior enhancement layer, sand glue forms thickening layer, thickening layer thickness 10mm.Then separately thin bamboo strips used for weaving band is continued to hoop spiral cross winding outside adhering to that layer of thin bamboo strips used for weaving band of sand glue, when being wound around, add resin compound, this resin compound comprises the amino resin of 90%-97% and the bio-based filler of 3%-10%.Outer enhancement layer is wound around thickness and reaches 4mm.
5, after being wound around, pipeline is heating and curing, becomes the bamboo sand coiled composite tube of hard one.
6, at the pipeline outside brushing good resin of one deck water-tight corrosion-proof and radiation proof filler, thick approximately 0.5 ~ 1mm.External protection coating preferred epoxy, unsaturated polyester resin, paint or pitch.
Embodiment 2
Described in the present embodiment, method is for the production of the bamboo-plastic combined pipeline of DN300, referring to Fig. 1, described pipeline its radially by being respectively inside liner 1, interior enhancement layer 2, thickening layer 3, outer enhancement layer 4 and external protection coating 5 outside interior.Its preparation method is:
1, fresh mao bamboon is split into 0.5 ~ 3m length, 0.5 ~ 1.5mm thickness, the wide thin bamboo strips used for weaving of 5 ~ 20mm, bonding or be stitched into a continuous thin bamboo strips used for weaving band with lining cloth, and be rolled into volume.
2, the coated one deck mould release film on the steel straight tube mould of polishing that is 300mm at external diameter, resin and bamboo fiber knitting felt excellent with antiseptic property or that meet food security are made the inside liner that thickness reaches 1.5mm, resin preferred epoxy or unsaturated polyester resin on pipe mold.
3, after inside liner solidifies, the thin bamboo strips used for weaving band of rolling is contained on Stetch Wrapping Machine, successively adopt hoop spiral cross winding in inside liner outside on thin bamboo strips used for weaving band, when being wound around, add the amino resin of having filled a prescription, this resin compound comprises the amino resin of 90%-97% and the bio-based filler of 3%-10%.Interior enhancement layer thickness 4mm.
4, in the mode of layering spray, make thickening layer.Referring to Fig. 3, above thin bamboo strips used for weaving band A, in sandbox 21, holding thickness is 30 order～120 object silica sands, and the bottom of sandbox 21 has 3 silica sand leak 22 and 3 resin leak 23 to be staggered front to back arrangement.The size that regulates plate 24 to adjust silica sand leak 22 by sandbox 21 bottoms is measured sand production rate, and resin pump is housed in resin leak 23, utilizes resin pump to control gel quantity.Conveying along with thin bamboo strips used for weaving band A, open successively silica sand leak 22 and resin leak 23, silica sand and resin form the sand glue mixing at thin bamboo strips used for weaving band A higher slice spray, in sand glue, the shared mass ratio of silica sand is 85%, the shared mass ratio of resin is 15%, the preferred amino resin of resin.Thin bamboo strips used for weaving band and sand glue uniform winding are outside interior enhancement layer, and sand glue forms thickening layer, thickening layer thickness 6mm.Thin bamboo strips used for weaving band forms outer enhancement layer, outer enhancement layer thickness 2mm.
5, after being wound around, pipeline is heating and curing, after resin solidification, becomes the bamboo sand coiled composite tube of hard one.
6, in pipeline outside, be coated with the good resin of one deck water-tight corrosion-proof and radiation proof filler, form the thick external protection coating of thick about 0.5mm, become a complete bamboo sand coiled composite tube road.External protection coating preferred epoxy, unsaturated polyester resin, paint or pitch.
Although the present invention with embodiment openly as above; but it is not in order to limit protection scope of the present invention; any technician who is familiar with this technology, not departing from change and the retouching of doing in the spirit and scope of the present invention, all should belong to protection scope of the present invention.
Claims (9)
1. the preparation method of a bamboo sand coiled composite tube, prepare successively radially inside liner from the inside to the outside of this bamboo sand coiled composite tube, interior enhancement layer, thickening layer, outer enhancement layer and external protection coating, it is characterized in that: in preparation during enhancement layer, by thin bamboo strips used for weaving band successively hoop spiral cross winding outside inside liner until design thickness, when being wound around, add resin compound, enhancement layer in forming, on thin bamboo strips used for weaving band, adhere to sand glue, thin bamboo strips used for weaving band and sand glue are wrapped in outside interior enhancement layer equably, in described sand glue, silica sand mass ratio is 75%-88%, resin quality is than being 12%-25%, when sand glue forms thickening layer, thin bamboo strips used for weaving band forms outer enhancement layer.
2. the preparation method of bamboo sand coiled composite tube according to claim 1, it is characterized in that: during the outer enhancement layer of preparation, according to design thickness, require that independent thin bamboo strips used for weaving band is continued to successively hoop spiral cross winding and, outside adhering to that layer of thin bamboo strips used for weaving band of sand glue, when being wound around, add resin compound.
3. the preparation method of bamboo sand coiled composite tube according to claim 1 and 2, it is characterized in that: adopt the mode of wet method sand adding to form thickening layer: in sandbox, holding thickness is 30 order ~ 120 object silica sands, sandbox is let slip a remark and is positioned at conveyor belt top, according to caliber and burning into sand thickness, by controlling the transfer rate of conveyor belt, measure sand production rate, resin enters stirring apparatus by resin infusion, the silica sand measuring is stirred into sand glue with mixed with resin by tape transport in stirring apparatus, in sand glue, silica sand mass ratio is 75%-88%, resin quality is than being 12%-25%, sand glue enters in the discharging bucket that is positioned over thin bamboo strips used for weaving band top by the delivery chute of stirring apparatus, the outlet of discharging bucket below and thin bamboo strips used for weaving band are with wide, sand glue drenches on the thin bamboo strips used for weaving band that drops on forward straight tube mould conveying winding, thin bamboo strips used for weaving band and sand glue uniform winding outside interior enhancement layer until reach appointed thickness, synchronously make thickening layer and outer enhancement layer.
4. the preparation method of bamboo sand coiled composite tube according to claim 1 and 2, it is characterized in that: adopt the mode of layering spray to form thickening layer: above thin bamboo strips used for weaving band, in sandbox, holding thickness is 30 order ~ 120 object silica sands, the bottom of sandbox has several measure-alike, be staggered front to back silica sand leak and the resin leak of arrangement, by adjusting silica sand leak size, control sand production rate, resin leak place is provided with resin pump and controls gel quantity, conveying along with thin bamboo strips used for weaving band, silica sand and resin form sand glue in the stack of thin bamboo strips used for weaving band higher slice, in sand glue, silica sand mass ratio is 75%-88%, resin quality is than being 12%-25%, thin bamboo strips used for weaving band and sand glue uniform winding outside interior enhancement layer until reach appointed thickness, synchronously make thickening layer and outer enhancement layer.
5. the preparation method of bamboo sand coiled composite tube according to claim 1 and 2, it is characterized in that: described thin bamboo strips used for weaving band its preparation method is, mao bamboon is split into the thin bamboo strips used for weaving of long 0.5 ~ 3m, thick 0.5 ~ 1.5mm, wide 5 ~ 20mm, by thin bamboo strips used for weaving with lining cloth is bonding or sew up or weave and connect into a continuous thin bamboo strips used for weaving band.
6. the preparation method of bamboo sand coiled composite tube according to claim 1 and 2, is characterized in that: described resin is amino resin.
7. the preparation method of bamboo sand coiled composite tube according to claim 1, it is characterized in that: described inside liner preparation method is coated one deck mould release film on straight tube mould, then with resin and bamboo fibre nonwovens or bamboo fiber knitting felt, make the inside liner of design thickness on straight tube mould, described resin is epoxy resin or unsaturated polyester resin.
8. the preparation method of bamboo sand coiled composite tube according to claim 1 and 2, is characterized in that: described resin compound comprises that mass ratio is the amino resin of 90%-97% and the biologic packing material that mass ratio is 3%-10%.
9. the preparation method of bamboo sand coiled composite tube according to claim 1, it is characterized in that: treat that pipeline solidifies, after finishing polishing, enhancement layer appearance is coated with last layer external protection coating outside, and external protection coating is epoxy resin, unsaturated polyester resin, paint or pitch.
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Effective date of registration: 20150924 Address after: Hangzhou City, Zhejiang province 311115 Fengdu village Pingyao Town, Yuhang District Road Show Applicant after: Zhejiang Xinzhou Bamboo Base Composite Materials Technology Co., Ltd. Applicant after: Ye Ling Address before: Hangzhou City, Zhejiang province 311115 Fengdu village Pingyao Town, Yuhang District Road Show Applicant before: Zhejiang Xinzhou Bamboo Base Composite Materials Technology Co., Ltd. |
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