CN103692671B - A kind of heavy caliber variable turning angle PVC preparation technology - Google Patents
A kind of heavy caliber variable turning angle PVC preparation technology Download PDFInfo
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- CN103692671B CN103692671B CN201310749468.6A CN201310749468A CN103692671B CN 103692671 B CN103692671 B CN 103692671B CN 201310749468 A CN201310749468 A CN 201310749468A CN 103692671 B CN103692671 B CN 103692671B
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Abstract
The present invention relates to a kind of heavy caliber variable turning angle PVC preparation technology, comprise batch mixing, extrude, cooling and shaping, fixed length cutting, enlarging and packaging five processing steps for sale, the present invention adopts the flaring die after improvement, the angle and curved of the heavy caliber pvc pipe mouth of pipe can be realized, change existing PVC straight tube to need to carry out the predicament of turning by connector, by adopting the flaring die after improving, correspondingly change the processing technology of enlarging step, the basis of existing pipe-expanding machine adds the processing step horizontally rotating flaring die, the bending of heavy caliber PVC can be realized, flaring die in this technical process is easy to use, Be very effective, process for machining and manufacturing is simple, good economic benefit can be brought.
Description
Technical field
The present invention relates to a kind of heavy caliber variable turning angle PVC preparation technology, belong to polyvinyl chloride (PVC) tubing technical field.
Background technology
In water system, plastic pipe have not burn into sanitation performance good, be easy to the features such as installation, obtain in China and widely popularize, substitute traditional galvanized iron conduit be trend of the times.Plastic water pipe divides by material and mainly comprises: polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP) etc.Be widely adopted because PVC pipeline has the advantages such as intensity is high, fire resistance good, high ring rigidity, excellent weather resistance, price are lower compared with other polyolefin pipe, but PVC pipeline hardness is high, flexible poor, can not be bending as PE, to such an extent as to PVC prepared by existing technique is all straight tube, cause turning in work progress must connect with pipe fitting, especially heavy caliber pipe, not only increase cost, and pipe fitting also becomes the key factor affecting construction quality.Therefore, need to improve heavy caliber PVC forming method, seek a kind of preparation technology realizing heavy caliber PVC interface and bend, to obtain the heavy caliber PVC of variable turning angle, reduce construction cost.
Summary of the invention
For deficiency of the prior art, the invention provides a kind of heavy caliber variable turning angle PVC preparation technology.
Terminological interpretation:
The abbreviation of ACR:Acryliccopolymer is the acrylic acid esters co-polymer with core/shell structure, is the modifier of a kind of high comprehensive performance that polyvinyl chloride (PVC) production field is commonly used.
Processing aid type ACR: be called processing aid type ACR, this area convenient source to improve the ACR used for the purpose of processing characteristics.
Technical scheme of the present invention is as follows:
A kind of heavy caliber variable turning angle PVC preparation technology, comprises following processing step:
(1) batch mixing: by weight, getting polyvinyl chloride resin 100 parts, stabilizing agent 0.4-4.0 part, flexibilizer 2-6 part, rigid particles 2-8 part, processing aid 0.5-3.0 part, external lubricant 0.6-1.5 part, in-lubricant 0.5-1.0 part, antioxidant 0.05-0.5 part, colouring agent 0.03-3 part and filler 0-5 part, to put into high-speed mixer heat mixed, by mixed for batch mixing heat most 90-120 DEG C, cold mixed through high-speed mixer again after reaching temperature, mixed most squeeze into dry feed bin after 25-45 DEG C by cold for batch mixing, obtain mixed material;
(2) extrude: the mixed material that step (1) obtains is put into extruder extruding pipe material, and the technological parameter extruded is as follows: body temperature: 140-185 DEG C, merging core temperature: 180-150 DEG C, head temperature: 170-220 DEG C; Engine speed: 10-90 rev/min, feeding rotating speed: 10-90 rev/min;
(3) cooling and shaping: conventionally shaped by the tubing extruded in step (2), after vacuum cooled sizing, utilizes hauling machine segmentation speed governing to draw, reduces in enlarging crooked position hauling speed; Utilize hauling machine segmentation speed governing to draw, reduce in enlarging crooked position hauling speed, to improve bending section wall thickness, when avoiding bending pipes larger, cause lateral wall excessively thin.
(4) fixed length cutting, enlarging: be placed on pipe-expanding machine after the tubing after step (3) being processed carries out fixed length cutting and carry out enlarging, the mould that wherein pipe-expanding machine adopts comprises seeker, little module, large module, connector and impeller-hub;
Wherein, described seeker comprises the separate unit of multiple flexible connection, forms tubulose; Described separate unit is disc, axially running through of described separate unit is provided with through hole, two laterally inclined settings of described separate unit, the latter half of separate unit side is provided with the first couple axle, two sides are symmetrically arranged with lug, lug on separate unit side realizes being flexibly connected by the first rotating shaft with the lug on adjacent separate unit side, one end of described first rotating shaft is set to outward extending disk, and the latter half of described disk perpendicular bisector is provided with the second couple axle;
Described first rotating shaft is fixedly installed the first pulley and the second pulley, described first pulley and the second pulley are respectively arranged with the first steel wire rope and the second steel wire rope: one end of described first steel wire rope is fixedly installed on the first pulley, the other end of the first steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the first pulley; One end of described second steel wire rope is fixedly installed on the second pulley, the other end of the second steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the second pulley, and the direction that described first steel wire rope and the second steel wire rope are wound around on pulley is contrary;
Y shape trace is provided with between adjacent separate unit, described Y shape trace comprises the first pole, second pole and the 3rd pole, one end of described first pole, one end of second pole and one end of the 3rd pole are movably connected by the second rotating shaft, the other end of described first pole is connected with first couple axle of separate unit side the latter half respectively with the other end of the second pole, the described other end of the 3rd pole is connected with the second couple axle on disk, the first half of each side of described separate unit is provided with tongue and groove, tongue and groove between adjacent separate unit cooperatively interacts,
Before carrying out enlarging, first pole and the second pole are arranged on the same line, pin several separate units of front end, then flaring die is inserted into PVC inside and carries out enlarging, PVC transfixion is kept after enlarging, horizontally rotating flaring die root by pipe-expanding machine causes mould seeker to bend, and then realize the bending of heavy caliber PVC, radius to be bent cools after reaching requirement size, mould is extracted out after cooling and shaping, while extracting mould out, pull rope belt movable pulley to rotate the motion causing the 3rd pole, 3rd pole drives the motion of the first pole and the second pole thus unlocks several separate units of front end, after flaring die is extracted out smoothly, obtain PVC finished product,
Wrinkle resistant inside when being guarantee bending pipes in enlarging step, lug position between adjacent separate unit is arranged on the latter half of separate unit, when horizontally rotating mould, between the separate unit of the latter half, less relative displacement occurs, the distance between separate unit not easily causes the inner side wrinkling of tubing under high heated plastic state.
(5) pack for sale: the PVC finished product packing that step (4) is obtained, for sale.
According to the present invention, preferably, the PVC resin powder described in step (1) is SG-4 or SG-5 type PVC resin powder;
Described stabilizing agent is lead salt stabilizer, calcium zinc stabilizer or organic tin stabilizer;
Described in-lubricant is stearic acid, calcium stearate or the mixing of the two, and described external lubricant is the mixing of Tissuemat E (PE wax), paraffin, microwax or many persons;
Described flexibilizer is rubber-like flexibilizer or thermoplastic elastomer (TPE) class flexibilizer;
Described rigid particles is inorganic rigid particle calcium carbonate, organic rigid-particle acrylonitritrile-styrene resin (AS) or their mixture;
Described processing aid is ACR-201, ACR-401 or their mixture;
Described external lubricant is the mixing of Tissuemat E (PE wax), paraffin, microwax or many persons;
Described in-lubricant is stearic acid, calcium stearate or the mixing of the two;
Described antioxidant is hindered phenolic antioxidant BHT, 1010 or their mixture;
Described colouring agent is rutile titanium dioxide or anatase titanium dioxide, is this area conventional material;
Described filler is blanc fixe or calcium carbonate, is this area conventional material.
According to the present invention, preferably, the extruder described in step (2) is conical double screw extruder;
According to the present invention, preferably, in step (4), multiple separate units of seeker front end are connected by gear; When pulling steel wire rope, control separate unit can be reached, and then the effect driving other separate units to rotate.
According to the present invention, preferably, the pipe-expanding machine described in step (4) is the full-automatic pipe-expanding machine of SGK16-50.
Beneficial effect of the present invention is:
1. adopt the flaring die after improving, the angle and curved of the heavy caliber pvc pipe mouth of pipe can be realized, change existing PVC straight tube to need to carry out the predicament of turning by connector, several separate units foremost of flaring die are set to the structure of controlling rotary simultaneously, can guarantee that the bending radius of every root tubing is identical, PVC is not by the impact of tubing heated length.
2. on the basis keeping most of original technique, by adopting the flaring die after improving, correspondingly change the processing technology of enlarging step, the basis of existing pipe-expanding machine adds the processing step horizontally rotating flaring die, the bending of heavy caliber PVC can be realized, do not increase production cost compared with the prior art.
3. the flaring die in this technical process is easy to use, Be very effective, and process for machining and manufacturing is simple, can bring good economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flaring die that the present invention adopts.
Fig. 2 is the flaring die partial structurtes enlarged diagram that the present invention adopts.
Fig. 3, Fig. 4 are the structural representation of separate unit in the flaring die that adopts of the present invention.
Fig. 5 is the side structure schematic diagram of separate unit in the flaring die that adopts of the present invention.
Fig. 6, Fig. 7 and Fig. 8 are the three-dimensional structure diagram of separate unit in the flaring die that adopts of the present invention.
Fig. 9 is the structural representation that in the flaring die that adopts of the present invention, adjacent separate unit matches.
Figure 10 is the course of work schematic diagram that flaring die horizontally rotates.
Figure 11, Figure 12 are the schematic diagram that flaring die can control separate unit.
Figure 13, Figure 14 are the enlarged diagram that flaring die can control separate unit.
Figure 15, Figure 16 are the structural representation of flaring die middle pulley.
Wherein: 1, impeller-hub, 2, large module, 3, connector, 4, little module, 5, seeker, 6, separate unit, 7, lug, 8, tongue and groove, the 9, first pole, 10, the second pole, 11, the 3rd pole, the 12, first pulley, the 13, second pulley, 14, the first steel wire rope, the 15, second steel wire rope.
Detailed description of the invention
By reference to the accompanying drawings, by specific embodiment, the invention will be further elaborated, but be not limited thereto.
Embodiment 1:
Prepare the variable turning angle PVC technique that bore is 630mm, processing step is as follows:
(1) batch mixing: getting 100kgSG-4 type PVC resin powder, 0.4kg calcium zinc stabilizer, 2kg rubber-like flexibilizer, 2kg inorganic rigid particle calcium carbonate, 0.5kgACR-201 processing aid, 0.6kg Tissuemat E (PE wax), 0.5kg stearic acid, 0.05kg hindered phenolic antioxidant BHT, 0.03kg rutile titanium dioxide and 1kg blanc fixe, to put into high-speed mixer heat mixed, by mixed for batch mixing heat most 90 DEG C, cold mixed through high-speed mixer again after reaching temperature, mixed most squeeze into dry feed bin after 25 DEG C by cold for batch mixing, obtain mixed material;
(2) extrude: the mixed material that step (1) obtains is put into conical double screw extruder extruding pipe material, and the technological parameter extruded is as follows: body temperature: 140 DEG C, merging core temperature: 180 DEG C, head temperature: 170 DEG C; Engine speed: 10 revs/min, feeding rotating speed: 10 revs/min;
(3) cooling and shaping: conventionally shaped by the tubing extruded in step (2), after vacuum cooled sizing, utilizes hauling machine segmentation speed governing to draw, reduces in enlarging crooked position hauling speed;
(4) fixed length cutting, enlarging: be placed on the full-automatic pipe-expanding machine of SGK16-50 after the tubing after step (3) being processed carries out fixed length cutting and carry out enlarging, the mould that wherein pipe-expanding machine adopts comprises seeker, little module, large module, connector and impeller-hub;
Wherein, described seeker comprises the separate unit of multiple flexible connection, forms tubulose; Described separate unit is disc, axially running through of described separate unit is provided with through hole, two laterally inclined settings of described separate unit, the latter half of described separate unit side is provided with the first couple axle, two sides are symmetrically arranged with lug, lug on separate unit side realizes being flexibly connected by the first rotating shaft with the lug on adjacent separate unit side, one end of described first rotating shaft is provided with outward extending disk, and the latter half of described disk perpendicular bisector is provided with the second couple axle;
Described first rotating shaft is fixedly installed the first pulley and the second pulley, described first pulley and the second pulley are respectively arranged with the first steel wire rope and the second steel wire rope: one end of described first steel wire rope is fixedly installed on the first pulley, the other end of described first steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the first pulley; One end of described second steel wire rope is fixedly installed on the second pulley, the other end of described second steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the second pulley, and the direction that described first steel wire rope and the second steel wire rope are wound around on pulley is contrary;
Y shape trace is provided with between adjacent separate unit, described Y shape trace comprises the first pole, second pole and the 3rd pole, one end of described first pole, one end of second pole and one end of the 3rd pole are movably connected by the second rotating shaft, the other end of described first pole is connected with first couple axle of separate unit side the latter half respectively with the other end of the second pole, the described other end of the 3rd pole is connected with the second couple axle on disk, the first half of each side of described separate unit is provided with tongue and groove, tongue and groove between adjacent separate unit cooperatively interacts,
Before carrying out enlarging, first pole and the second pole are arranged on the same line, then flaring die is inserted into PVC inside and carries out enlarging, PVC transfixion is kept after enlarging, horizontally rotating flaring die root by pipe-expanding machine causes mould seeker to bend, and then realize the bending of heavy caliber PVC, radius to be bent cools after reaching requirement size, mould is extracted out after cooling and shaping, while extraction mould, pull rope belt movable pulley to quote the motion of the 3rd pole, 3rd pole drives the motion of the first pole and the second pole thus unlocks the separate unit of front end, after flaring die is extracted out smoothly, obtain PVC finished product,
Wrinkle resistant inside when being guarantee bending pipes in enlarging step, lug position between adjacent separate unit is arranged on the latter half of separate unit, when horizontally rotating mould, between the separate unit of the latter half, less relative displacement occurs, the distance between separate unit not easily causes the inner side wrinkling of tubing under high heated plastic state.
(5) pack for sale: the PVC finished product packing that step (4) is obtained, for sale.
Embodiment 2:
Prepare the variable turning angle PVC technique that bore is 800mm, processing step is as follows:
(1) batch mixing: getting 100kgSG-5 type PVC resin powder, 4kg lead salt stabilizer, 6kg thermoplastic elastomer (TPE) class flexibilizer, 8kg organic rigid-particle acrylonitritrile-styrene resin (AS), 3kgACR-401 processing aid, 1.5kg paraffin, 1kg calcium stearate, 0.5kg hindered phenolic antioxidant 101 parts, 3kg anatase titanium dioxide and 5kg calcium carbonate, to put into high-speed mixer heat mixed, by mixed for batch mixing heat most 120 DEG C, cold mixed through high-speed mixer again after reaching temperature, mixed most squeeze into dry feed bin after 45 DEG C by cold for batch mixing, obtain mixed material;
(2) extrude: the mixed material that step (1) obtains is put into conical double screw extruder extruding pipe material, and the technological parameter extruded is as follows: body temperature: 185 DEG C, merging core temperature: 150 DEG C, head temperature: 220 DEG C; Engine speed: 90 revs/min, feeding rotating speed: 90 revs/min;
(3) cooling and shaping: conventionally shaped by the tubing extruded in step (2), after vacuum cooled sizing, utilizes hauling machine segmentation speed governing to draw, reduces in enlarging crooked position hauling speed;
(4) fixed length cutting, enlarging: be placed on the full-automatic pipe-expanding machine of SGK16-50 after the tubing after step (3) being processed carries out fixed length cutting and carry out enlarging, the mould that wherein pipe-expanding machine adopts comprises seeker, little module, large module, connector and impeller-hub,
Wherein, described seeker comprises the separate unit of multiple flexible connection, forms tubulose; Described separate unit is disc, axially running through of described separate unit is provided with through hole, two laterally inclined settings of described separate unit, the latter half of described separate unit side is provided with the first couple axle, two sides are symmetrically arranged with lug, lug on separate unit side realizes being flexibly connected by the first rotating shaft with the lug on adjacent separate unit side, one end of described first rotating shaft is provided with outward extending disk, and the latter half of described disk perpendicular bisector is provided with the second couple axle;
Described first rotating shaft is fixedly installed the first pulley and the second pulley, described first pulley and the second pulley are respectively arranged with the first steel wire rope and the second steel wire rope: one end of described first steel wire rope is fixedly installed on the first pulley, the other end of described first steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the first pulley; One end of described second steel wire rope is fixedly installed on the second pulley, the other end of described second steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the second pulley, and the direction that described first steel wire rope and the second steel wire rope are wound around on pulley is contrary;
Y shape trace is provided with between adjacent separate unit, described Y shape trace comprises the first pole, second pole and the 3rd pole, one end of described first pole, one end of second pole and one end of the 3rd pole are movably connected by the second rotating shaft, the other end of described first pole is connected with first couple axle of separate unit side the latter half respectively with the other end of the second pole, the described other end of the 3rd pole is connected with the second couple axle on disk, the first half of each side of described separate unit is provided with tongue and groove, tongue and groove between adjacent separate unit cooperatively interacts,
Before carrying out enlarging, first pole and the second pole are arranged on the same line, then flaring die is inserted into PVC inside and carries out enlarging, PVC transfixion is kept after enlarging, horizontally rotating flaring die root by pipe-expanding machine causes mould seeker to bend, and then realize the bending of heavy caliber PVC, radius to be bent cools after reaching requirement size, mould is extracted out after cooling and shaping, while extraction mould, pull rope belt movable pulley to quote the motion of the 3rd pole, 3rd pole drives the motion of the first pole and the second pole thus unlocks the separate unit of front end, after flaring die is extracted out smoothly, obtain PVC finished product,
Wrinkle resistant inside when being guarantee bending pipes in enlarging step, lug position between adjacent separate unit is arranged on the latter half of separate unit, when horizontally rotating mould, between the separate unit of the latter half, less relative displacement occurs, the distance between separate unit not easily causes the inner side wrinkling of tubing under high heated plastic state.
(5) pack for sale: the PVC finished product packing that step (4) is obtained, for sale.
Embodiment 3:
A kind ofly prepare the variable turning angle PVC technique that bore is 700mm, processing step as described in Example 1, its difference is: step (1) batch mixing: get 100kgSG-5 type PVC resin powder, 2kg organic tin stabilizer, 3kg thermoplastic elastomer (TPE) class flexibilizer, 5kg organic rigid-particle acrylonitritrile-styrene resin (AS), 1kgACR-401 processing aid, 1kg microwax, 1kg calcium stearate, 0.5kg hindered phenolic antioxidant 1010, it is mixed that 1kg anatase titanium dioxide and 2kg calcium carbonate put into high-speed mixer heat, by mixed for batch mixing heat most 90 DEG C, cold mixed through high-speed mixer again after reaching temperature, mixed most dry feed bin is squeezed into after 45 DEG C by cold for batch mixing, obtain mixed material,
Embodiment 4:
A kind ofly prepare the variable turning angle PVC technique that bore is 750mm, processing step as described in Example 2, its difference is: step (1) batch mixing: get 100kgSG-4 type PVC resin powder, 3kg organic tin stabilizer, 5kg rubber-like flexibilizer, 7kg inorganic rigid particle calcium carbonate, 2.5kgACR-201 processing aid, the mixture of 1kg paraffin and microwax, 1kg stearic acid, 0.3kg hindered phenolic antioxidant BHT, 2.5kg it is mixed that rutile titanium dioxide and 4kg blanc fixe put into high-speed mixer heat, by mixed for batch mixing heat most 120 DEG C, cold mixed through high-speed mixer again after reaching temperature, mixed most dry feed bin is squeezed into after 25 DEG C by cold for batch mixing, obtain mixed material,
Embodiment 5:
Prepare the variable turning angle PVC technique that bore is 750mm, as described in Example 2, its difference is processing step: in step (4), four separate units of seeker front end are connected by gear; When pulling steel wire rope, a control separate unit foremost can be reached, and then the effect driving other separate units to rotate.
Claims (9)
1. a heavy caliber variable turning angle PVC preparation technology, comprises following processing step:
(1) batch mixing: by weight, getting polyvinyl chloride resin 100 parts, stabilizing agent 0.4-4.0 part, flexibilizer 2-6 part, rigid particles 2-8 part, processing aid 0.5-3.0 part, external lubricant 0.6-1.5 part, in-lubricant 0.5-1.0 part, antioxidant 0.05-0.5 part, colouring agent 0.03-3 part and filler 0-5 part, to put into high-speed mixer heat mixed, by mixed for batch mixing heat most 90-120 DEG C, cold mixed through high-speed mixer again after reaching temperature, mixed most squeeze into dry feed bin after 25-45 DEG C by cold for batch mixing, obtain mixed material;
(2) extrude: the mixed material that step (1) obtains is put into extruder extruding pipe material, and the technological parameter extruded is as follows: body temperature: 140-185 DEG C, merging core temperature: 180-150 DEG C, head temperature: 170-220 DEG C; Engine speed: 10-90 rev/min, feeding rotating speed: 10-90 rev/min;
(3) cooling and shaping: by after the tubing vacuum cooled sizing extruded in step (2), utilize hauling machine segmentation speed governing to draw, reduce in enlarging crooked position hauling speed;
(4) fixed length cutting, enlarging: be placed on pipe-expanding machine after the tubing after step (3) being processed carries out fixed length cutting and carry out enlarging, the mould that wherein pipe-expanding machine adopts comprises seeker, little module, large module, connector and impeller-hub;
Wherein, described seeker comprises the separate unit of multiple flexible connection, forms tubulose; Described separate unit is disc, axially running through of described separate unit is provided with through hole, two laterally inclined settings of described separate unit, the latter half of separate unit side is provided with the first couple axle, two sides are symmetrically arranged with lug, lug on separate unit side realizes being flexibly connected by the first rotating shaft with the lug on adjacent separate unit side, one end of described first rotating shaft is set to outward extending disk, and the latter half of described disk perpendicular bisector is provided with the second couple axle;
Described first rotating shaft is fixedly installed the first pulley and the second pulley, described first pulley and the second pulley are respectively arranged with the first steel wire rope and the second steel wire rope: one end of described first steel wire rope is fixedly installed on the first pulley, the other end of the first steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the first pulley; One end of described second steel wire rope is fixedly installed on the second pulley, the other end of the second steel wire rope is carried out being wound around and is passed by separate unit through hole axially on the second pulley, and the direction that described first steel wire rope and the second steel wire rope are wound around on pulley is contrary;
Y shape trace is provided with between adjacent separate unit, described Y shape trace comprises the first pole, second pole and the 3rd pole, one end of described first pole, one end of second pole and one end of the 3rd pole are movably connected by the second rotating shaft, the other end of described first pole is connected with first couple axle of separate unit side the latter half respectively with the other end of the second pole, the described other end of the 3rd pole is connected with the second couple axle on disk, the first half of each side of described separate unit is provided with tongue and groove, tongue and groove between adjacent separate unit cooperatively interacts,
Before carrying out enlarging, first pole and the second pole are arranged on the same line, pin several separate units of front end, then flaring die is inserted into PVC inside and carries out enlarging, PVC transfixion is kept after enlarging, horizontally rotating flaring die root by pipe-expanding machine causes mould seeker to bend, and then realize the bending of heavy caliber PVC, radius to be bent cools after reaching requirement size, mould is extracted out after cooling and shaping, while extracting mould out, pull the first rope belt movable pulley to rotate the motion causing the 3rd pole, 3rd pole drives the motion of the first pole and the second pole thus unlocks several separate units of front end, after flaring die is extracted out smoothly, obtain PVC finished product,
(5) pack for sale: the PVC finished product packing that step (4) is obtained, for sale.
2. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1, it is characterized in that: the PVC resin powder described in step (1) is SG-4 or SG-5 type PVC resin powder, and described stabilizing agent is lead salt stabilizer, calcium zinc stabilizer or organic tin stabilizer.
3. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1, it is characterized in that: the in-lubricant described in step (1) is stearic acid, calcium stearate or the mixing of the two, described external lubricant is the mixing of Tissuemat E (PE wax), paraffin, microwax or many persons.
4. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1, it is characterized in that: the flexibilizer described in step (1) is rubber-like flexibilizer or thermoplastic elastomer (TPE) class flexibilizer, and described processing aid is ACR-201, ACR-401 or their mixture.
5. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1, is characterized in that: the rigid particles described in step (1) is inorganic rigid particle calcium carbonate, organic rigid-particle acrylonitritrile-styrene resin (AS) or their mixture.
6. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1, is characterized in that: the antioxidant described in step (1) is hindered phenolic antioxidant BHT, 1010 or their mixture.
7. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1, it is characterized in that: the colouring agent described in step (1) is rutile titanium dioxide or anatase titanium dioxide, described filler is blanc fixe or calcium carbonate.
8. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1 or 2, is characterized in that: the extruder described in step (2) is conical double screw extruder.
9. heavy caliber variable turning angle PVC preparation technology as claimed in claim 1 or 2, is characterized in that: in step (4), multiple separate units of seeker front end are connected by gear, and described pipe-expanding machine is the full-automatic pipe-expanding machine of SGK16-50.
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| CN105504570A (en) * | 2014-12-08 | 2016-04-20 | 安徽省忠宏管业科技有限公司 | Preparation method for detection tube |
| CN106426993B (en) * | 2016-10-17 | 2019-05-14 | 广州至简通用设备制造有限公司 | A kind of pipe-making method of hot pressing plasticizing multiple tube |
| CN106751145A (en) * | 2016-11-30 | 2017-05-31 | 安吉兴华电力管道股份有限公司 | A kind of high-strength composite power pipe and its preparation technology |
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| US4324755A (en) * | 1976-11-05 | 1982-04-13 | Cabinet Patco | Process for putting a lip on a thick-walled tube of flexible material, and apparatus for practicing same |
| CN201096239Y (en) * | 2007-10-20 | 2008-08-06 | 王占奎 | Composite pipes enlarging rounding device |
| CN102516688A (en) * | 2011-12-12 | 2012-06-27 | 杭州波达塑料科技股份有限公司 | Environmentally-friendly rigid polyvinyl chloride (PVC) double-wall corrugated pipe and preparation method thereof |
| CN202716462U (en) * | 2012-07-23 | 2013-02-06 | 大连三垒机器股份有限公司 | Large-caliber polyvinyl chloride (PVC) double-wall corrugated pipe flaring mould |
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| CN103692671A (en) | 2014-04-02 |
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