CN102746574A - Modified flame retardant composite resin and metal pipe for mine as well as preparation method of modified flame retardant composite resin and metal pipe - Google Patents
Modified flame retardant composite resin and metal pipe for mine as well as preparation method of modified flame retardant composite resin and metal pipe Download PDFInfo
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- CN102746574A CN102746574A CN2012102411023A CN201210241102A CN102746574A CN 102746574 A CN102746574 A CN 102746574A CN 2012102411023 A CN2012102411023 A CN 2012102411023A CN 201210241102 A CN201210241102 A CN 201210241102A CN 102746574 A CN102746574 A CN 102746574A
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Abstract
The invention discloses modified flame retardant composite resin and a preparation method of the modified flame retardant composite resin. The resin comprises the following ingredients in parts by weight: 80 to 100 parts of polyethylene and polypropylene mixtures, 5 to 10 parts of terpene resin, 5 to 10 parts of zinc oxide, 3 to 6 parts of ethoxylate alkylamine, 2 to 5 parts of paraffin and 1 to 2 parts of trinonyl phenyl phosphate. The modified flame retardant composite resin coated on the surface of a metal pipe for a mine has a good flame retardant effect, meanwhile, the effect of preventing the metal pipe from being fast corroded is realized, and the metal pipe coated with the resin is suitable for being used in underground mine operation.
Description
Technical field
The present invention relates to macromolecular material, be specifically related to a kind of modified flame-retardant compound resin and mine with metal tube and preparation method thereof.
Background technology
In mine operation, traditional method is to adopt metal tube to operate, but the mine interior humidity is big, and the time, long can the generation metal tube corroded; Metal tube weight is big in addition, transportation inconvenience, and also maintenance in the future is also rather loaded down with trivial details.At present, had enterprise to adopt the plastic polyethylene pipe to replace metal tube, though convenient like this transportation, the vinyl tube insufficient strength under the bigger situation of bottomhole wellbore pressure, can produce potential safety hazard.
Summary of the invention
The present invention aims to provide a kind of modified flame-retardant compound resin, can be used for the coating metal tube-surface, in the hope of the easy corrosive problem in solution metal tube surface, and has fire-retardant effect.
Another object of the present invention provides a kind of preparation method of above-mentioned modified flame-retardant compound resin.
The 3rd purpose of the present invention provides can protection against corrosion, and the mine with flame retardant properties is used metal tube.
The 4th purpose of the present invention provides the preparation method of a kind of above-mentioned mine with metal tube.
The invention provides a kind of modified flame-retardant compound resin, comprise each component of following weight part:
80～100 parts in Vilaterm and polyacrylic mixture,
5～10 parts of terpine resins,
5～10 parts in zinc oxide,
3～6 parts of ethoxylated alkylamines,
2～5 parts in paraffin,
1～2 part of trisnonyl phenyl phosphite.
The present invention also provides a kind of method of said modified flame-retardant compound resin, may further comprise the steps:
(1) takes by weighing each component by prescription, mixed 10～20 minutes;
(2) mixture is put into tablets press, carry out extruder grain;
(3) particle that will from tablets press, extrude sieves and whole grain;
(4) the gained particle was placed 60～80 ℃ of following dryings 4～6 hours.
The present invention also provides a kind of mine to use metal tube, comprises metal tube body and the fire-retardant compound resin coating of property that is coated in the metal tube body surface.
The present invention also provides the preparation method of a kind of above-mentioned mine with metal tube, comprises the steps:
(1) takes by weighing the each component of proportional quantity and mixing;
(2) each component that mixes in the step (1) is put into tablets press, carry out extruder grain;
(3) granule sieving that will from tablets press, extrude and whole grain;
(4) particle behind the whole grain was descended dry 4～6 hours at 60～80 ℃, process granularity 30～60 purpose modified flame-retardant composite resin materials;
(5) metal tube is heated to 220～280 ℃, immerses in the said modified flame-retardant compound resin to take out after 3～10 seconds and promptly get said pit water and use pipeline.
Among the present invention, terpine resin is a properties-correcting agent, improves the coating flowability, improves sticking power, toughness, anti-environment cracking property, resistance to fatigue and the hardness of base steel; Zinc oxide is stablizer, improves the environment weather resisteant; Ethoxylated alkylamine is a static inhibitor, improves corrosion resistance nature and work-ing life; Paraffin is flow agent, increases leveling characteristics, and any surface finish forms smooth, a slick face; Trisnonyl phenyl phosphite is an inhibitor, prevents to wear out.Through said components is filled a prescription in proportion, be prepared into the top coat resin, good flame retardation effect not only, and solved the shortcoming that metal tube is prone to be corroded well is fit to but is not limited to the top coat of mine metal tube, and is fit to promote the use of.
Description of drawings
Fig. 1 is the cross section structure synoptic diagram of mine of the present invention with metal tube.
Embodiment
Embodiment 1
The modified flame-retardant compound resin that is used to be coated with mine metal tube surface of the present invention comprises each component of following weight part: 80～100 parts in Vilaterm and polyacrylic mixture
5～10 parts of terpine resins,
5～10 parts in zinc oxide,
3～6 parts of ethoxylated alkylamines,
2～5 parts in paraffin,
1～2 part of trisnonyl phenyl phosphite.
Terpine resin is a properties-correcting agent in the present embodiment, improves the coating flowability, improves sticking power, toughness, anti-environment cracking property, resistance to fatigue and the hardness of base steel; Zinc oxide is stablizer, improves the environment weather resisteant; Ethoxylated alkylamine is a static inhibitor, improves corrosion resistance nature and work-ing life; Paraffin is flow agent, increases leveling characteristics, and any surface finish forms smooth, a slick face; Trisnonyl phenyl phosphite is an inhibitor, prevents to wear out.Through said components is filled a prescription in proportion, be prepared into and be fit to the mine top coat resin of operation metal tube down, good flame retardation effect not only, and solved the shortcoming that metal tube is prone to be corroded well, be fit to promote the use of.
In the present embodiment, preferred in order to obtain more excellent protection against corrosion and flame retardant effect, said modified flame-retardant compound resin comprises each component of following weight part:
85～95 parts in Vilaterm and polyacrylic mixture,
6～9 parts of terpine resins,
6～9 parts in zinc oxide,
4～5 parts of ethoxylated alkylamines,
3～4 parts in paraffin,
1～2 part of trisnonyl phenyl phosphite.
For the better modified flame-retardant compound resin of obtained performance, preferred, said Vilaterm is a linear low density polyethylene.
For the better modified flame-retardant compound resin of obtained performance, preferred, said Vilaterm and polyacrylic mixture Vilaterm and polyacrylic mass ratio are (3～19): 1.
For the better modified flame-retardant compound resin of obtained performance, preferred, said Vilaterm and polyacrylic fineness are 30～50 orders.
For the better modified flame-retardant compound resin of obtained performance, preferred, the fineness of said zinc oxide is 30～50 orders.
Present embodiment provides a kind of method for preparing said modified flame-retardant compound resin, may further comprise the steps:
(1) takes by weighing each component by prescription, mixed 10～20 minutes;
(2) mixture is put into tablets press, carry out extruder grain;
(3) particle that will from tablets press, extrude sieves and whole grain;
(4) the gained particle was placed under 60～80 ℃ of temperature dry 4～6 hours.
Said prescription adopts the prescription described in the embodiment 1.
Terpine resin is a properties-correcting agent in the present embodiment, improves the coating flowability, improves sticking power, toughness, anti-environment cracking property, resistance to fatigue and the hardness of base steel; Zinc oxide is stablizer, improves the environment weather resisteant; Ethoxylated alkylamine is a static inhibitor, improves corrosion resistance nature and work-ing life; Paraffin is flow agent, increases leveling characteristics, and any surface finish forms smooth, a slick face; Trisnonyl phenyl phosphite is an inhibitor, prevents to wear out.Through this preparation method, be prepared into and be fit to the mine top coat resin of operation metal tube down, good flame retardation effect not only, and solved the shortcoming that metal tube is prone to be corroded well, be fit to promote the use of.
Embodiment 3
Referring to Fig. 1, present embodiment provides a kind of mine to use metal tube, comprises metal tube body 2 and the modified flame-retardant compound resin coating that is coated in the metal tube body surface, and said modified flame-retardant compound resin coating comprises undercoat 12 and top coating 11.Modified flame-retardant compound resin coating is optional to be got with the foregoing description 1 described modified flame-retardant compound resin preparation.
The thickness of said modified flame-retardant compound resin coating is preferably 0.1～3mm.
The present embodiment mine with metal tube in each component that the modified flame-retardant compound resin coating that the metal tube body applies relates to; Terpine resin is a properties-correcting agent; Improve the coating flowability, improve sticking power, toughness, anti-environment cracking property, resistance to fatigue and the hardness of base steel; Zinc oxide is stablizer, improves the environment weather resisteant; Ethoxylated alkylamine is a static inhibitor, improves corrosion resistance nature and work-ing life; Paraffin is flow agent, increases leveling characteristics, and any surface finish forms smooth, a slick face; Trisnonyl phenyl phosphite is an inhibitor, prevents to wear out.Metal tube in the present embodiment, owing to be coated with modified flame-retardant compound resin coating at the metal tube body surface, good flame retardation effect not only, and solved the shortcoming that metal tube is prone to be corroded well, be fit to promote the use of.
Embodiment 4
Present embodiment provides the preparation method of a kind of mine with metal tube, comprises the steps:
(1) takes by weighing the each component of proportional quantity and mixing;
Proportional quantity between the each component that this step is required and each component can repeat no more at this referring to the record of the foregoing description 1.
(2) each component that mixes in the step (1) is put into tablets press, carry out extruder grain;
(3) granule sieving that will from tablets press, extrude and whole grain;
(4) particle behind the whole grain was descended dry 4～6 hours at 60～80 ℃, process granularity 30～60 purpose modified flame-retardant composite resin materials;
(5) metal tube is heated to 220～280 ℃, immerses in the said modified flame-retardant compound resin to take out after 3～10 seconds and promptly get said pit water and use pipeline.
Said proportioning adopts the proportioning described in the embodiment 1.
In the present embodiment, terpine resin is a properties-correcting agent, improves the coating flowability, improves sticking power, toughness, anti-environment cracking property, resistance to fatigue and the hardness of base steel; Zinc oxide is stablizer, improves the environment weather resisteant; Ethoxylated alkylamine is a static inhibitor, improves corrosion resistance nature and work-ing life; Paraffin is flow agent, increases leveling characteristics, and any surface finish forms smooth, a slick face; Trisnonyl phenyl phosphite is an inhibitor, prevents to wear out.Through the metal tube of the preparation method in present embodiment preparation, owing to be furnished with modified flame-retardant compound resin coating in surfaces coated, good flame retardation effect not only, and solved the shortcoming that metal tube is prone to be corroded well, be fit to promote the use of.
Describe the present invention below in conjunction with specific embodiment, but the present invention is not limited to cited embodiment.
Embodiment 5
The modified flame-retardant compound resin that present embodiment provides comprises each component of following weight part:
80 parts in the mixture of Vilaterm (all Longhua workers in Nanjing ltd, model LLDPE RG300U) and Vestolen PP 7052 (the wide safe chemical industry in Hangzhou ltd, PP H360F),
10 parts of terpine resins,
10 parts in zinc oxide,
3 parts of ethoxylated alkylamines,
5 parts in paraffin,
1 part of trisnonyl phenyl phosphite.
Wherein, in said Vilaterm and the polyacrylic mixture, Vilaterm and polyacrylic mass ratio are 3:1, and said Vilaterm and polyacrylic granularity are 30 orders.The granularity of said zinc oxide is 30 orders.Said Vilaterm is a linear low density polyethylene.
The modified flame-retardant compound resin that present embodiment provides can be used for but is not limited to be coated with mine metal tube surface, the preparation method of modified flame-retardant compound resin for example:
(101) take by weighing each component by prescription, mixed 10 minutes;
(102) mixture is put into tablets press, carry out extruder grain;
(103) particle that will from tablets press, extrude sieves and whole grain;
(104) the gained particle was placed under 60 ℃ of temperature dry 4 hours.
After modified flame-retardant compound resin in the present embodiment was coated on the metallic surface, metal tube was not seen corrosion after in mine, using half a year.
Embodiment 6
Being used to of present embodiment is coated with the modified flame-retardant compound resin on mine metal tube surface, comprises each component of following weight part:
100 parts in the mixture of Vilaterm (all Longhua workers in Nanjing ltd, model LLDPE 1002KW) and Vestolen PP 7052 (the wide safe chemical industry in Hangzhou ltd, PP B350F),
5 parts of terpine resins,
5 parts in zinc oxide,
6 parts of ethoxylated alkylamines,
2 parts in paraffin,
2 parts of trisnonyl phenyl phosphites.
Wherein, in said Vilaterm and the polyacrylic mixture, Vilaterm and polyacrylic mass ratio are 19:1, and said Vilaterm and polyacrylic granularity are 50 orders.The granularity of said zinc oxide is 50 orders.Said Vilaterm is a linear low density polyethylene.
The preparation method of modified flame-retardant compound resin that being used to of present embodiment is coated with mine metal tube surface is following:
(201) take by weighing each component by prescription, mixed 20 minutes;
(202) mixture is put into tablets press, carry out extruder grain;
(203) particle that will from tablets press, extrude sieves and whole grain;
(204) the gained particle was placed under 80 ℃ of temperature dry 6 hours.
After modified flame-retardant compound resin in the present embodiment was coated on the metallic surface, metal tube was not seen corrosion after in mine, using half a year.
Embodiment 7
Being used to of present embodiment is coated with the modified flame-retardant compound resin on mine metal tube surface, comprises each component of following weight part:
90 parts in the mixture of Vilaterm (all Longhua workers in Nanjing ltd, model LLDPE 4030) and Vestolen PP 7052 (the wide safe chemical industry in Hangzhou ltd, PP B350F),
7 parts of terpine resins,
7 parts in zinc oxide,
4 parts of ethoxylated alkylamines,
4 parts in paraffin,
2 parts of trisnonyl phenyl phosphites.
Wherein, in said Vilaterm and the polyacrylic mixture, Vilaterm and polyacrylic mass ratio are 10:1, and said Vilaterm and polyacrylic granularity are 40 orders.The granularity of said zinc oxide is 40 orders.Said Vilaterm is a linear low density polyethylene.
The preparation method of modified flame-retardant compound resin that being used to of present embodiment is coated with mine metal tube surface is following:
(301) take by weighing each component by prescription, mixed 15 minutes;
(302) mixture is put into tablets press, carry out extruder grain;
(303) particle that will from tablets press, extrude sieves and whole grain;
(304) the gained particle was placed under 70 ℃ of temperature dry 5 hours.
After modified flame-retardant compound resin in the present embodiment was coated on the metallic surface, metal tube was not seen corrosion after in mine, using half a year.
Embodiment 8
Being used to of present embodiment is coated with the modified flame-retardant compound resin on mine metal tube surface, comprises each component of following weight part:
85 parts in the mixture of Vilaterm (all Longhua workers in Nanjing ltd, model LLDPE 4570) and Vestolen PP 7052 (the wide safe chemical industry in Hangzhou ltd, PP H900F),
9 parts of terpine resins,
6 parts in zinc oxide,
5 parts of ethoxylated alkylamines,
4 parts in paraffin,
1 part of trisnonyl phenyl phosphite.
Wherein, in said Vilaterm and the polyacrylic mixture, Vilaterm and polyacrylic mass ratio are 15:1, and said Vilaterm and polyacrylic granularity are 30 orders.The granularity of said zinc oxide is 40 orders.Said Vilaterm is a linear low density polyethylene.
The preparation method of modified flame-retardant compound resin that being used to of present embodiment is coated with mine metal tube surface is following:
(501) take by weighing each component by prescription, mixed 17 minutes;
(502) mixture is put into tablets press, carry out extruder grain;
(503) particle that will from tablets press, extrude sieves and whole grain;
(504) the gained particle was placed under 75 ℃ of temperature dry 4 hours.
After modified flame-retardant compound resin in the present embodiment was coated on the metallic surface, metal tube was not seen corrosion after in mine, using half a year.
Embodiment 9
Being used to of present embodiment is coated with the modified flame-retardant compound resin on mine metal tube surface, comprises each component of following weight part:
95 parts in the mixture of Vilaterm (all Longhua workers in Nanjing ltd, model LLDPE4570) and Vestolen PP 7052 (the wide safe chemical industry in Hangzhou ltd, PP H900F),
6 parts of terpine resins,
9 parts in zinc oxide,
4 parts of ethoxylated alkylamines,
3 parts in paraffin,
1 part of trisnonyl phenyl phosphite.
Wherein, in said Vilaterm and the polyacrylic mixture, Vilaterm and polyacrylic mass ratio are 3:1, and said Vilaterm and polyacrylic granularity are 30 orders.The granularity of said zinc oxide is 40 orders.Said Vilaterm is a linear low density polyethylene.
The preparation method of modified flame-retardant compound resin that being used to of present embodiment is coated with mine metal tube surface is following:
(601) take by weighing each component by prescription, mixed 10 minutes;
(602) mixture is put into tablets press, carry out extruder grain;
(603) particle that will from tablets press, extrude sieves and whole grain;
(604) the gained particle was placed under 60 ℃ of temperature dry 4 hours.
After modified flame-retardant compound resin in the present embodiment was coated on the metallic surface, metal tube was not seen corrosion after in mine, using half a year.
Embodiment 10
The mine of the modified flame-retardant compound resin described in the present embodiment comprises the steps: with the preparation method of metal tube
(1) take by weighing the each component of proportional quantity (adopt proportioning in embodiment 1) and mixing;
(2) each component that mixes in the step (1) is put into tablets press, carry out extruder grain;
(3) granule sieving that will from tablets press, extrude and whole grain;
(4) particle behind the whole grain was descended dry 5 hours at 70 ℃, process granularity 50 purpose modified flame-retardant composite resin materials;
(5) metal tube is heated to 220 ℃, immerses in the said modified flame-retardant compound resin to take out after 3 seconds and promptly get said pit water and use pipeline.
The gained particle was placed under 60 ℃ of temperature dry 4 hours.
Using half a year with metal tube in mine after, the mine of the preparing method's preparation in the present embodiment do not see corrosion.
The mine of the modified flame-retardant compound resin described in the present embodiment comprises the steps: with the preparation method of metal tube
(1) takes by weighing the each component of proportional quantity (adopt proportioning in embodiment 1) and mixing;
(2) each component that mixes in the step (1) is put into tablets press, carry out extruder grain;
(3) granule sieving that will from tablets press, extrude and whole grain;
(4) particle behind the whole grain was descended dry 5 hours at 70 ℃, process granularity 50 purpose modified flame-retardant composite resin materials;
(5) metal tube is heated to 280 ℃, immerses in the said modified flame-retardant compound resin to take out after 10 seconds and promptly get said pit water and use pipeline.
Using half a year with metal tube in mine after, the mine of the preparing method's preparation in the present embodiment do not see corrosion.
The data that table 1 obtains through the check of the UL94 flame retardant rating method of inspection for prepared modified flame-retardant compound resin among the embodiment 5-9.Can find out that the modified flame-retardant compound resin among the embodiment 5-9 all can reach the fire-retardant requirement of VO level.Always have two cover samples, every cover sample has 5 samples, and 5 samples of first cover are at 23 ℃, and the condition held of 50%RH is tested after 48 hours again.5 samples of second cover are tested after 7 days 70 ℃ condition held again.Wherein A is ten total flaming combustion times (S), and B has peak combustion time (S) individually in 5 samples, and C is flameless combustion time (S), and D is for having or not the flame molten drop.The requirement of ULVO level flame retardant rating is: A 50, B 10, C 30, and D be completely without.The concrete test data of embodiment 5-9 is seen table 1.
Table 1
The sequencing of above embodiment is merely to be convenient to describe, and does not represent the quality of embodiment.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. a modified flame-retardant compound resin is characterized in that, comprises each component of following weight part:
80～100 parts in Vilaterm and polyacrylic mixture,
5～10 parts of terpine resins,
5～10 parts in zinc oxide,
3～6 parts of ethoxylated alkylamines,
2～5 parts in paraffin,
1～2 part of trisnonyl phenyl phosphite.
2. modified flame-retardant compound resin according to claim 1 is characterized in that, comprises each component of following weight part:
85～95 parts in Vilaterm and polyacrylic mixture,
6～9 parts of terpine resins,
6～9 parts in zinc oxide,
4～5 parts of ethoxylated alkylamines,
3～4 parts in paraffin,
1～2 part of trisnonyl phenyl phosphite.
3. modified flame-retardant compound resin according to claim 1 and 2 is characterized in that, said Vilaterm is a linear low density polyethylene.
4. modified flame-retardant compound resin according to claim 1 and 2 is characterized in that, Vilaterm and polyacrylic mass ratio are (3～19) in said Vilaterm and the polyacrylic mixture: 1.
5. modified flame-retardant compound resin according to claim 4 is characterized in that, said Vilaterm and polyacrylic fineness are 30～50 orders.
6. modified flame-retardant compound resin according to claim 1 is characterized in that, the fineness of said zinc oxide is 30～50 orders.
7. a method for preparing each said modified flame-retardant compound resin of claim 1-6 is characterized in that, may further comprise the steps:
(1) takes by weighing each component by prescription, mixed 10～20 minutes;
(2) mixture is put into tablets press, carry out extruder grain;
(3) particle that will from tablets press, extrude sieves and whole grain;
(4) the gained particle was placed under 60～80 ℃ of temperature dry 4～6 hours.
8. a mine that is coated with each described modified flame-retardant compound resin of claim 1-6 is used metal tube, it is characterized in that: comprise metal tube body and the modified flame-retardant compound resin coating that is coated in the metal tube body surface.
9. the described mine of claim 8 is used metal tube, it is characterized in that: the thickness of said modified flame-retardant compound resin coating is 0.1～3mm.
10. claim 8 or 9 described mines is characterized in that with the preparation method of metal tube, comprise the steps:
(1) takes by weighing the each component of proportional quantity and mixing;
(2) each component that mixes in the step (1) is put into tablets press, carry out extruder grain;
(3) granule sieving that will from tablets press, extrude and whole grain;
(4) particle behind the whole grain was descended dry 4～6 hours at 60～80 ℃, process granularity 30～60 purpose modified flame-retardant composite resin materials;
(5) metal tube is heated to 220～280 ℃, immerses in the said modified flame-retardant compound resin to take out after 3～10 seconds and promptly get said pit water and use pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210241102.3A CN102746574B (en) | 2012-07-12 | 2012-07-12 | Modified flame retardant composite resin and metal pipe for mine as well as preparation method of modified flame retardant composite resin and metal pipe |
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| CN201210241102.3A CN102746574B (en) | 2012-07-12 | 2012-07-12 | Modified flame retardant composite resin and metal pipe for mine as well as preparation method of modified flame retardant composite resin and metal pipe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033667A (en) * | 2013-03-08 | 2014-09-10 | 天源环保有限公司 | Special environment-friendly modified polymer composite tube |
| CN112409673A (en) * | 2020-11-21 | 2021-02-26 | 武汉升瑞通管业有限公司 | High-corrosion-resistance PE (polyethylene) blow-off pipe and production method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090105374A1 (en) * | 2007-09-28 | 2009-04-23 | Dow Global Technologies Inc. | Thermoplastic olefin composition with improved heat distortion temperature |
| CN102443208A (en) * | 2011-10-28 | 2012-05-09 | 泰安现代塑料有限公司 | Mining flame retardant plastic geogrid master batch |
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2012
- 2012-07-12 CN CN201210241102.3A patent/CN102746574B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090105374A1 (en) * | 2007-09-28 | 2009-04-23 | Dow Global Technologies Inc. | Thermoplastic olefin composition with improved heat distortion temperature |
| CN102443208A (en) * | 2011-10-28 | 2012-05-09 | 泰安现代塑料有限公司 | Mining flame retardant plastic geogrid master batch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033667A (en) * | 2013-03-08 | 2014-09-10 | 天源环保有限公司 | Special environment-friendly modified polymer composite tube |
| CN112409673A (en) * | 2020-11-21 | 2021-02-26 | 武汉升瑞通管业有限公司 | High-corrosion-resistance PE (polyethylene) blow-off pipe and production method thereof |
| CN112409673B (en) * | 2020-11-21 | 2023-05-02 | 武汉升瑞通管业有限公司 | PE blow-down pipe with high corrosion resistance and production method thereof |
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| CN102746574B (en) | 2014-07-16 |
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