CN2238961Y - Six-layer structure steel pipe with cardanol epoxy resin lining layer - Google Patents
Six-layer structure steel pipe with cardanol epoxy resin lining layer Download PDFInfo
- Publication number
- CN2238961Y CN2238961Y CN 95226675 CN95226675U CN2238961Y CN 2238961 Y CN2238961 Y CN 2238961Y CN 95226675 CN95226675 CN 95226675 CN 95226675 U CN95226675 U CN 95226675U CN 2238961 Y CN2238961 Y CN 2238961Y
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- CN
- China
- Prior art keywords
- epoxy resin
- steel pipe
- cardanol epoxy
- thickness
- undercoat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a six-layer structure steel pipe with a cardanol epoxy resin lining layer for underground internal and external corrosion resistance, which comprises an outer coating layer, an outer bottom coating layer, a steel pipe, an inner bottom coating layer, a lining layer and an inner coating layer, wherein, the inner and the outer coating layers are coated with high solid cardanol epoxy resin paints, the inner and the outer bottom coating layers are coated with modified chlorosulfonated polyethylene paints, and the lining layer adopts fibreglass non-woven fabrics to impregnate the cardanol epoxy resin paints to form a glass fibre reinforced plastic lining. The cardanol epoxy resin is a novel resin. Compared with the bisphenol A epoxy resin, the cardanol epoxy resin has similar corrosion resistance and chemical resistance performances, better impact resistance performance and flexibility, and has lower cost than the common epoxy resin.
Description
The utility model relates to a kind of six layers of structured steel pipe that have cardanol epoxy resin interlining nexine that are used for underground internal and external anti-corrosive.
Existing bisphenol A type epoxy resin coated steel pipe, its coating impact resistance, pliability are relatively poor, and price is higher.Existing cashew pnenolic aldehyde lacquer is shortcoming such as though price cheaply exists in the coating curing property bad, and drying rate is slow, and its surface compressed and corrosion resistance are relatively poor.Joint easily leaks though the made pipeline corrosion resistance of fiber glass epoxy is good, and pliability, poor impact resistance, needs significant care during construction.
The purpose of this utility model is to avoid above-mentioned deficiency of the prior art and a kind of good impact resistance is provided, and pliability is good, and corrosion resistance is good, low-cost six layers of structured steel pipe that have cardanol epoxy resin interlining nexine.
The purpose of this utility model reaches by following measure:
The utility model is six layers of structured steel pipe that have cardanol epoxy resin interlining nexine about a kind of.Undercoat 2 outside the outer surface of steel pipe 1 has, should outer undercoat 2 be to apply by the modification chlorosulfonated polythylene coatings to form, has external coating 3 on undercoat 2 outer surfaces outside, it is characterized in that this external coating 3 is to be applied by the cardanol epoxy resin emulsion paint to form, undercoat 4 in the internal surface of steel pipe 1 has, should interior undercoat 4 be to apply by the modification chlorosulfonated polythylene coatings to form, internal surface at interior undercoat 4 has backing layer 5, this backing layer 5 is to be formed by glass fibre non-woven dipping cardanol epoxy resin emulsion paint, on the internal surface of backing layer 5, has undercoating 5, this undercoating 5 is to be applied by the cardanol epoxy resin emulsion paint to form, above-mentioned cardanol epoxy resin emulsion paint is to obtain 1 with phenol reactant by cashew nut shell liquid (CNSL) under perchloric acid catalysis, 8-dihydroxy pentadecane (DNP), the cardanol epoxy resin that under sodium hydroxide catalysis, obtains with epoxychloropropane (ECH) polymerization, in the cardanol epoxy resin, add fat polyamine again, the polyamines addition product, polyamide, amino resin, phenolic resin etc. wherein one or more curing agent and make.The length of steel pipe 1 is 2～24m, caliber 127～800mm, thickness 25～50 μ m of outer undercoat 2, thickness 50～500 μ m of external coating 3, the thickness of interior undercoat 4 is 25～50 μ m, and the thickness 0.5～2.0mm of backing layer 5, the thickness of undercoating 6 are 50～500 μ m.
Steel pipe 1 length is 12m, caliber 127mm, and the thickness 50 μ m of outer undercoat 2, the thickness 150 μ m of external coating 3, the thickness 50 μ m of interior undercoat 4, the thickness of backing layer 5 is 1mm, the thickness of undercoating 6 is 150 μ m.
Below in conjunction with description of drawings the utility model:
Figure is cutd open in Fig. 1-six layers of structured steel pipe side-looking that have cardanol epoxy resin interlining nexine of the present utility model;
Fig. 2-the sectional view that has six layers of structured steel pipe of cardanol epoxy resin interlining nexine of the present utility model;
Among the figure: the 1-steel pipe; The outer undercoat of 2-; The 3-external coating;
Undercoat in the 4-; The 5-backing layer; The 6-undercoating;
Embodiment 1: the preparation of cardanol epoxy resin emulsion paint
Get in the there-necked flask of phenol 627g adding 2L, be heated to 60 ℃, under agitation slowly splash into an amount of perchloric acid, add cashew nut shell liquid (CNSL) 500g then, under agitation be warming up to 125 ℃, constant temperature three hours, after finishing, reaction steams unnecessary phenol, use the phenol of 0.05% alkali liquid washing remnants then, obtain 1 after the vacuum drying, 8-dihydroxy pentadecane (DNP).500gDNP and 44g epoxychloropropane (ECH) are added in the there-necked flask, be warming up to 60 ℃ under stirring, Dropwise 5 0%NaOH is several then, reaction temperature rises to 110 ℃, wash the salt in the dereaction thing about reaction 5h with water, steam excessive ECH, vacuum obtains the cardanol epoxy resin after dry.Cardanol epoxy resin and polyamide curing agent were mixed by weight 3: 1, promptly obtain the cardanol epoxy resin emulsion paint.
Embodiment 2: have the manufacturing of six layers of structured steel pipe of cardanol epoxy resin interlining nexine
Get caliber 219mm, the steel pipe 1 of length 12m, inner and outer surface with ultrasonic cleaning cleaning steel pipe 1, with toluene liquid degreasing 5min, with double-component modification chlorosulfonated polythylene coatings (JGH type modification chlorosulfonated polythylene coatings, the product that PetroChina Engineering Technology Inst produces) be coated on the inner and outer surface of steel pipe 1, normal temperature is placed 20～60min and is made its bone dry, obtains outer undercoat 2 and interior undercoat 4.The glass fibre non-woven lining tube material that is impregnated with the cardanol epoxy resin emulsion paint is sent in the pipe 1, adopt rubber ball formula applicator that this material is overlayed on the wall of pipe 1, be put in roasting chamber then and solidify 30min down at 170 ℃, thereby form backing layer 5, on backing layer 5 and outer undercoat 2 surfaces, apply the cardanol epoxy resin emulsion paint then, in 150 ℃ of roasting chamberes, toast 30min, form undercoating 6 and external coating 3 respectively, promptly make six layers of structured steel pipe that have cardanol epoxy resin interlining nexine.
The performance test of cardanol epoxy resin emulsion paint coating and Comparative Examples sees Table 1.
The utility model compared with prior art has the following advantages:
1. six layers of structured steel pipe with the cardanol epoxy resin backing layer of the present utility model are with existing The three-decker steel pipe that has is compared, and has higher corrosion resistance.
2. six layers of structured steel pipe of the present utility model adopt cardanol epoxy resin coating, than Bisphenol-A Epoxy Resin Paint has higher resistance to impact, and price only is bis-phenol 50%～80% of A type epoxy coating.
Table 1
| The pilot project kind | Cardanol epoxy resin coating and coating | Bisphenol-A Epoxy Resin Paint and coating | Test method | ||
| Viscosity (Pas) | ≥0.2 | ≥0.2 | GB1723 | ||
| Fineness (μ m) | ≤90 | ≤90 | GB1724 | ||
| Adhesive force (level) | 1～2 | 1～2 | GB1720 | ||
| Pliability (mm) | But doubling | 1 | GB1731 | ||
| Resistance to impact (J) | ≥9.8 | ≥4.9 | GB1732 | ||
| Solid content (%) | The A component | ≥75 | ≥75 | GB1725 | |
| The B component | ≥75 | ≥75 | GB1725 | ||
| Chemical reagent resistance | 10％H 2SO 4 | 1000h is qualified | 1000h is qualified | GB1763 | |
| 10％HCl | 1000h is qualified | 1000h is qualified | GB1763 | ||
| 10％NaOH | 1000h is qualified | 1000h is qualified | GB1763 | ||
| 3％NaCl | 1000h is qualified | 1000h is qualified | GB1763 | ||
| Sewage | 1000h is qualified | 1000h is qualified | GB1763 | ||
| Salt-fog resistant test | 1000h, one-level | 1000h, one-level | GB1771 | ||
Claims (3)
1. six layers of structured steel pipe that have cardanol epoxy resin interlining nexine, undercoat (2) outside the outer surface of steel pipe (1) has, should outer undercoat (2) be to apply by the modification chlorosulfonated polythylene coatings to form, has external coating (3) on undercoat (2) outer surface outside, it is characterized in that this external coating (3) is to be applied by the cardanol epoxy resin emulsion paint to form, internal surface at steel pipe (1) has interior undercoat (4), should interior undercoat (4) be to apply by the modification chlorosulfonated polythylene coatings to form, on the internal surface of interior undercoat (4), has backing layer (5), this backing layer (5) is to be formed by glass fibre non-woven dipping cardanol epoxy resin emulsion paint, on the internal surface of backing layer (5), has undercoating (6), this undercoating (6) is to be applied by the cardanol epoxy resin emulsion paint to form, above-mentioned cardanol epoxy resin emulsion paint is to obtain 1 with phenol reactant by cashew nut shell liquid (CNSL) under perchloric acid catalysis, the cardanol epoxy resin that 8-dihydroxy pentadecane (DNP) obtains with epoxychloropropane (ECH) polymerization under sodium hydroxide catalysis, in the cardanol epoxy resin, add fat polyamine again, the polyamines addition product, polyamide, amino resin, phenolic resin etc. wherein one or more curing agent and make.
2. six layers of structured steel pipe that have cardanol epoxy resin interlining nexine as claimed in claim 1, the length that it is characterized in that steel pipe (1) is 2～24m, caliber 127～800mm, thickness 25～50 μ m of outer undercoat (2), thickness 50～500 μ m of external coating (3), thickness 25～50 μ m of interior undercoat (4), the thickness 0.5～2.0mm of backing layer (5), the thickness of undercoating (6) are 50～500 μ m.
3. six layers of structured steel pipe that have cardanol epoxy resin interlining nexine as claimed in claim 1 or 2, it is characterized in that steel pipe (1) length is 12m, caliber 127mm, the thickness 50 μ m of outer undercoat (2), the thickness 150 μ m of external coating (3), the thickness 50 μ m of interior undercoat (4), the thickness of backing layer (5) is 1mm, the thickness of undercoating (6) is 150 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95226675 CN2238961Y (en) | 1995-12-04 | 1995-12-04 | Six-layer structure steel pipe with cardanol epoxy resin lining layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95226675 CN2238961Y (en) | 1995-12-04 | 1995-12-04 | Six-layer structure steel pipe with cardanol epoxy resin lining layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2238961Y true CN2238961Y (en) | 1996-10-30 |
Family
ID=33872765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95226675 Expired - Fee Related CN2238961Y (en) | 1995-12-04 | 1995-12-04 | Six-layer structure steel pipe with cardanol epoxy resin lining layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2238961Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449979A (en) * | 2013-08-19 | 2013-12-18 | 上海美东生物材料有限公司 | Bisphenol epoxy resin and preparation method thereof |
| CN103542199A (en) * | 2013-10-27 | 2014-01-29 | 何鹏 | Composite coating pipe |
| CN107503152A (en) * | 2017-10-18 | 2017-12-22 | 唐宏泉 | A kind of high efficiency resin interlining material preparation process |
| CN107636378A (en) * | 2015-05-28 | 2018-01-26 | 印度电钢有限公司 | With the improved corrosion-resistant buried nodular cast iron pipe fittings of external skin and preparation method |
-
1995
- 1995-12-04 CN CN 95226675 patent/CN2238961Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449979A (en) * | 2013-08-19 | 2013-12-18 | 上海美东生物材料有限公司 | Bisphenol epoxy resin and preparation method thereof |
| CN103542199A (en) * | 2013-10-27 | 2014-01-29 | 何鹏 | Composite coating pipe |
| CN107636378A (en) * | 2015-05-28 | 2018-01-26 | 印度电钢有限公司 | With the improved corrosion-resistant buried nodular cast iron pipe fittings of external skin and preparation method |
| CN107636378B (en) * | 2015-05-28 | 2019-07-26 | 印度电钢有限公司 | With the improved corrosion-resistant buried nodular cast iron pipe fittings of external skin and production method |
| CN107503152A (en) * | 2017-10-18 | 2017-12-22 | 唐宏泉 | A kind of high efficiency resin interlining material preparation process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |