CN102720896A - Pipe as well as preparation method and purpose of pipe - Google Patents
Pipe as well as preparation method and purpose of pipe Download PDFInfo
- Publication number
- CN102720896A CN102720896A CN2012101905933A CN201210190593A CN102720896A CN 102720896 A CN102720896 A CN 102720896A CN 2012101905933 A CN2012101905933 A CN 2012101905933A CN 201210190593 A CN201210190593 A CN 201210190593A CN 102720896 A CN102720896 A CN 102720896A
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- Prior art keywords
- polypropylene
- beta
- ppr
- tubing
- pipe
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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.)
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Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention provides a pipe as well as a preparation method and a purpose of the pipe. The pipe consists of an outer layer, a middle layer and an inner layer and has the recipe that the outer layer comprises PPR (polypropylene randon coplymer) polypropylene, PP-B (polypropylene block copolymer pipe) polypropylene and beta-nucleating agents, the middle layer comprises PPR polypropylene, PP-B polypropylene, beta-nucleating agents and nanometer calcium carbonate, an inner layer comprises PPR polypropylene, PP-B polypropylene, silver ion nanometer antibacterial masterbatch and beta-nucleating agents. The preparation comprises the step that stirring is carried out, stirred materials are added into a mold with a three-layer structure and are extruded under the condition that the mold temperature is 195 to 205 DEG C, and the screw rod temperature is 175 to 210 DEG C, the post treatment is carried out, and the pipe is obtained. The pipe has the advantages that the unique high-intensity crystal structure is realized, the pressure bearing capability and the high temperature resistance capability of a pipeline system are optimized, the creep resistance capability of the pipeline is greatly improved, and the fifty-year long-period hydrostatic stress at 70 DEG C reaches 5.0MPa.
Description
Technical field
The present invention relates to the pipe technology field, be meant a kind of tubing especially.
Background technique
The major defect of PPR water pipe is: heat-resisting quantity, resistance to pressure are poorer slightly, and the long-term work temperature can not be above 70 ℃; Every segment length is limited, and can not crooked construct, if pipe laying distance or corner are many, in construction, will use a large amount of joints; Tubing is cheap but parts price is higher relatively.But, from combination property, the PPR pipe is the higher tubing of present cost performance, so become the preferred material that the house ornamentation water pipe is transformed.
With respect to other several kinds of pipes: galvanized iron conduit is owing to exist numerous shortcomings, and the Ministry of Construction has expressly forbidden in 2000; Though plastic-aluminum pipe resistance to high temperature is good, when easy construction is used as hot-water line, because long-term expanding with heat and contract with cold can cause the tube wall dislocation so that cause seepage; Durable, the environmental protection of copper pipe, but because price is high, construction requirement is high not by extensive employing.
After the PPR plastic water pipe used a period of time, the inner tube wall secondary pollution was serious, is the ground of growing of bacterium, Legionella, became new human health killer and potential life threat, was unfit to do the domestic running water pipe.
Begin when running water pipe is made in the Chinese family popularization at PPR plastic tube in 2002; The a undocumented survey report in prevention from suffering from the diseases middle school, Beijing shows: the total number of bacteria of family expenses PPR running water pipe outflow water quality is countless; And detect legionella pneumophilia 1 type, 5 types; Startling more than the quantity, surpass the galvanized pipe that has banned use of.Relevant department to the result of laboratory test of water quality is: reach 28 kinds of bacteriums and 16 kinds of metallic elements, wherein iron, manganese, zinc, lead, mercury exceed standard seriously.The PPR water pipe shelters evil people and countenance evil practices, and is the prolific hotbed of bacterium.Pipeline industry inside is to the inner tube wall dirt sampling in use for some time of PPR running water pipe; Testing result is: a kind of yellow rust knurl; Include microorganisms such as bacillus, coccus, thin shape bacterium; A large amount of iron bacterias, Ai Xier Escherichia coli, enteric bacteria, perch bacterium, acinetobacter, Aeromonas, Arthrobacter, bacillus etc. nearly 31 kinds and pseudomonas putida belong at least 14 kinds of biotypes, even find that growing like straight chain Pseudomonas, crisp Bacillus, beautiful pipe spiral shell of anti-chlorine microorganism belongs to and Chlorella etc.Heterotroph, Escherichia coli, actinomyces and fungi very high concentrations in the inner tube wall dirt.
The nontoxic salubrity requirement of PPR plastic tube itself; But the PPR plastic tube does not have self-cleaning function and kills the bacterium function; Under this specific environment of domestic water; The backward technology of contaminated water source, waterworks and pipe network thereof outmoded unreasonable makes the PPR running water pipe of family expenses become the gathering ground and the bacterial growth ground of water pollution once again thing, serious threat health; A Chinese part city inhabitant statement-of-health in recent years discloses: rolling up of various diseases and cancer is relevant with household tap water water quality, and be relevant with the wrong choice supplying pipe.
Therefore, a kind of long service life, high temperature resistant, low temperature resistant, bearing capacity is high, and the water flowing flow is also big, and sanitation performance is good, and the appearance of reliable tubing easy to connect is just necessary.
Summary of the invention
The present invention proposes a kind of tubing, has solved pipeline heat-resisting quantity in the existing technology, resistance to pressure is poor, and the technical problem of mold resistance difference etc.
Technological scheme of the present invention is achieved in that
A kind of tubing, this tubing is made up of skin, mesosphere and internal layer, fills a prescription as follows:
Skin comprises, PPR polypropylene, PP-B polypropylene and beta-nucleated dose;
The mesosphere comprises, PPR polypropylene, PP-B polypropylene, beta-nucleated dose and nano-calcium carbonate;
Internal layer comprises, PPR polypropylene, PP-B polypropylene, silver ion nano-antibacterial master batch (commercially available) and beta-nucleated dose.
As optimized technical scheme, described skin, mesosphere and internal layer add Masterbatch as required.
As optimized technical scheme, component that described skin comprises and weight percentage thereof do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose is 90-95: 3-7: 1-3: 0.3-0.7.
As the technological scheme that choosing is more arranged, component that described skin comprises and weight percentage thereof do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose is 92.5: 5: 2: 0.5.
As optimized technical scheme, component that described mesosphere comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: nano-calcium carbonate is 85-90: 3-7: 1-3: 0.3-0.7: 3-7.
As preferred technological scheme, component that described mesosphere comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: nano-calcium carbonate is 87.5: 5: 2: 0.5: 5.
As optimized technical scheme, component that described internal layer comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: silver ion nano-antibacterial master batch is 88-93: 3-7: 1-3: 0.3-0.7: 1-3.
As preferred technological scheme, component that described internal layer comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: silver ion nano-antibacterial master batch is 90.5: 5: 2: 0.5: 2.
Aforementioned tubes is used for water pipe.
A kind of preparation method of tubing comprises:
(I) stir the prescription of skin, mesosphere, internal layer respectively;
(II) the above-mentioned material adding that stirs is had in the mould of three-decker; Under the condition of die temperature 195-205 ℃, extruder temperature 175-210 ℃, extrude, get into vacuum box afterwards, get into again in 85-105 ℃ the thermostat one; Cool off at 25-30 ℃ then; After the traction, get in the 70-80 ℃ of thermostat two, cutting promptly gets tubing then again.
As optimized technical scheme, said step (II) die temperature is specific as follows, 1,190 ± 5 ℃ of die temperatures; 2,195 ± 5 ℃ on mould; 3,198 ± 5 ℃ on mould; 4,200 ± 5 ℃ on mould; 5,200 ± 5 ℃ on mould; Said extruder temperature is specific as follows, 1,202 ± 5 ℃ of screw rods; 2,205 ± 5 ℃ of screw rods; 3,202 ± 5 ℃ of screw rods; 4,198 ± 5 ℃ of screw rods; 5,180 ± 5 ℃ of screw rods.
As optimized technical scheme, the temperature of said step (II) thermostat one is 95-100 ℃.Can avoid about uneven in temperature even again in this temperature range, it is crisp to cause product to be prone to.
As optimized technical scheme, said step (II) is soaked in 40-50 ℃ of thermostatted water earlier before getting into vacuum box.This process can increase toughness of products, avoids the even product that causes uneven in temperature easy crisp.
Beneficial effect
(1) tubing of the present invention has unique high tenacity crystalline structure; The bearing capacity and the heat-resisting ability of pipe-line system have been optimized; Improved the plastic pipe shortcoming that intensity declines to a great extent under HTHP; The creep resisting ability of pipeline is increased substantially, and the long-term hydrostatic tension in 70 ℃, 50 years reaches 5.0MPa, and the long-term hydrostatic tension ability 3.0MPa in 70 ℃, 50 years of PP-R pipe commonly used in the market;
(2) it is long that tubing of the present invention has the life-span, high temperature resistant, low temperature resistant, and bearing capacity is high, and the water flowing flow is also big, and sanitation performance is good, reliable characteristics easy to connect;
(3) preparation method of the present invention is simple, and cost is low, is suitable for industrialized production.
Embodiment
To carry out clear, intactly description to the technological scheme in the embodiment of the invention below, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
A kind of tubing of the present invention, this tubing is made up of skin, mesosphere and internal layer, fills a prescription as follows:
Skin comprises, PPR polypropylene, PP-B polypropylene and beta-nucleated dose;
The mesosphere comprises, PPR polypropylene, PP-B polypropylene, beta-nucleated dose and nano-calcium carbonate;
Internal layer comprises, PPR polypropylene, PP-B polypropylene, silver ion nano-antibacterial master batch (commercially available) and beta-nucleated dose.
Above-mentioned skin, mesosphere and internal layer add Masterbatch as required.Skin can be chosen following component and weight percentage thereof, the PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose is 90-95: 3-7: 1-3: 0.3-0.7; Following component and weight percentage can be chosen in the mesosphere, the PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: nano-calcium carbonate is 85-90: 3-7: 1-3: 0.3-0.7: 3-7; Internal layer can be chosen following component and weight percentage thereof, the PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: silver ion nano-antibacterial master batch is 88-93: 3-7: 1-3: 0.3-0.7: 1-3.Aforementioned proportion according to the needs of actual product can be suitable adjustment.Wherein add nano-calcium carbonate and be in order to adjust the hardness of tubing, silver ion nano-antibacterial master batch has solved the antibiotic property problem of water pipe, and PPR has heat resistance, and PP-B can increase toughness.
Embodiment 1
A kind of water pipe tubing, it is made up of skin, mesosphere and internal layer, and their prescription is as shown in table 1 respectively.
Table 1
The preparation method of aforementioned tubes, as follows:
(I) use the stir prescription of skin, mesosphere, internal layer of 3 stirrers respectively;
(II) the above-mentioned material that stirs is added in the mould with three-decker (promptly outer, in, interior) strict temperature, 1,190 ℃ of the die temperature controlled; 2,195 ℃ on mould; 3,198 ℃ on mould; 4,200 ℃ on mould; 5,200 ℃ on mould; Said extruder temperature is specific as follows, 1,202 ℃ of screw rod; 2,205 ℃ of screw rods; 3,202 ℃ of screw rods; 4,198 ℃ of screw rods; 5,180 ℃ of screw rods; In 40-45 ℃ of thermostatted water, soak earlier behind the extruding pipe material, get into vacuum box afterwards, get in 85 ℃ the thermostat one again, cool off at 25-30 ℃ then, after the traction, get in 70 ℃ of thermostats two again, cutting promptly gets tubing then.
Embodiment 2
A kind of water pipe tubing, it is made up of skin, mesosphere and internal layer, and their prescription is as shown in table 2 respectively.
Table 2
The preparation method, referring to embodiment 1, different with embodiment 1 yes thermostat one is 105 ℃, thermostat two is 75 ℃.
Embodiment 3
A kind of water pipe tubing, it is made up of skin, mesosphere and internal layer, and their prescription is as shown in table 3 respectively.
Table 3
The preparation method, referring to embodiment 1, different with embodiment 1 yes thermostat one is 95 ℃, thermostat two is 80 ℃.
Embodiment 4
A kind of water pipe tubing, it is made up of skin, mesosphere and internal layer, and their prescription is as shown in table 4 respectively.
Table 4
The preparation method is referring to embodiment 1.
The foregoing description 1-4 prepares the tubing of gained; Has unique high tenacity crystalline structure; Optimized the bearing capacity and the heat-resisting ability of pipe-line system, improved the plastic pipe shortcoming that intensity declines to a great extent under HTHP, the creep resisting ability of pipeline is increased substantially; The long-term hydrostatic tension in 70 ℃, 50 years reaches 5.0MPa, and the long-term hydrostatic tension ability 3.0MPa in 70 ℃, 50 years of PP-R pipe commonly used in the market.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. tubing, this tubing is made up of outer, mesosphere and internal layer, fills a prescription as follows:
Skin comprises, PPR polypropylene, PP-B polypropylene and beta-nucleated dose;
The mesosphere comprises, PPR polypropylene, PP-B polypropylene, beta-nucleated dose and nano-calcium carbonate;
Internal layer comprises, PPR polypropylene, PP-B polypropylene, silver ion nano-antibacterial master batch and beta-nucleated dose.
2. a kind of tubing according to claim 1 is characterized in that described skin, mesosphere and internal layer add Masterbatch as required.
3. a kind of tubing according to claim 2 is characterized in that, component that described skin comprises and weight percentage thereof do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose is 90-95: 3-7: 1-3: 0.3-0.7;
Component that described mesosphere comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: nano-calcium carbonate is 85-90: 3-7: 1-3: 0.3-0.7: 3-7;
Component that described internal layer comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: silver ion nano-antibacterial master batch is 88-93: 3-7: 1-3: 0.3-0.7: 1-3.
4. a kind of tubing according to claim 2 is characterized in that, component that described skin comprises and weight percentage thereof do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose is 92.5: 5: 2: 0.5;
Component that described mesosphere comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: nano-calcium carbonate is 87.5: 5: 2: 0.5: 5;
Component that described internal layer comprises and weight percentage do,
PPR polypropylene: PP-B polypropylene: Masterbatch: beta-nucleated dose: silver ion nano-antibacterial master batch is 90.5: 5: 2: 0.5: 2.
5. according to claim 3 or 4 described a kind of tubing, it is characterized in that described tubing is used for water pipe.
6. the preparation method of a tubing comprises:
(I) stir the prescription of skin, mesosphere, internal layer respectively;
(II) the above-mentioned material adding that stirs is had in the mould of three-decker; Under the condition of die temperature 195-205 ℃, extruder temperature 175-210 ℃, extrude, get into vacuum box afterwards, get into again in 85-105 ℃ the thermostat one; Cool off at 25-30 ℃ then; After the traction, get in the 70-80 ℃ of thermostat two, cutting promptly gets tubing then again.
7. the preparation method of a kind of tubing according to claim 6 is characterized in that, said step (II) die temperature is specific as follows, 1,190 ± 5 ℃ of die temperatures; 2,195 ± 5 ℃ on mould; 3,198 ± 5 ℃ on mould; 4,200 ± 5 ℃ on mould; 5,200 ± 5 ℃ on mould; Said extruder temperature is specific as follows, 1,202 ± 5 ℃ of screw rods; 2,205 ± 5 ℃ of screw rods; 3,202 ± 5 ℃ of screw rods; 4,198 ± 5 ℃ of screw rods; 5,180 ± 5 ℃ of screw rods.
8. according to the preparation method of claim 6 or 7 described a kind of tubing, it is characterized in that the temperature of said step (II) thermostat one is 95-100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101905933A CN102720896A (en) | 2012-06-11 | 2012-06-11 | Pipe as well as preparation method and purpose of pipe |
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| CN2012101905933A CN102720896A (en) | 2012-06-11 | 2012-06-11 | Pipe as well as preparation method and purpose of pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225716A (en) * | 2013-05-10 | 2013-07-31 | 甘肃顾地塑胶有限公司 | Method for preparing anti-microbial, anti-oxygen, anti-ultraviolet and light-resisting composite pipe |
| CN104497423A (en) * | 2014-12-04 | 2015-04-08 | 联塑科技发展(武汉)有限公司 | Impact-resistant PP-R tube and preparation method thereof |
| CN106832603A (en) * | 2017-02-27 | 2017-06-13 | 北京崇高纳米科技有限公司 | A kind of antibacterial atactic polypropylene water-feeding pipes and its production method |
| CN106947193A (en) * | 2017-03-24 | 2017-07-14 | 南京晶淼节能材料股份有限公司 | A kind of self-cleaning materials in the tube and preparation method thereof and its multiple tube being made |
| CN107880390A (en) * | 2017-11-21 | 2018-04-06 | 浙江龙财塑业有限公司 | A kind of PP R resist cold freeze proof antibacterial pipe material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106832603A (en) * | 2017-02-27 | 2017-06-13 | 北京崇高纳米科技有限公司 | A kind of antibacterial atactic polypropylene water-feeding pipes and its production method |
| CN106947193A (en) * | 2017-03-24 | 2017-07-14 | 南京晶淼节能材料股份有限公司 | A kind of self-cleaning materials in the tube and preparation method thereof and its multiple tube being made |
| CN107880390A (en) * | 2017-11-21 | 2018-04-06 | 浙江龙财塑业有限公司 | A kind of PP R resist cold freeze proof antibacterial pipe material and preparation method thereof |
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