CN106750919A - A kind of double orientation polyolefin wrapped tube and preparation method thereof - Google Patents

A kind of double orientation polyolefin wrapped tube and preparation method thereof Download PDF

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Publication number
CN106750919A
CN106750919A CN201611129599.4A CN201611129599A CN106750919A CN 106750919 A CN106750919 A CN 106750919A CN 201611129599 A CN201611129599 A CN 201611129599A CN 106750919 A CN106750919 A CN 106750919A
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CN
China
Prior art keywords
polyolefin
tube
orientation
double orientation
double
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Pending
Application number
CN201611129599.4A
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Chinese (zh)
Inventor
陈厚忠
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Wuhan Kingbull Economic Development Co Ltd
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Wuhan Kingbull Economic Development Co Ltd
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Priority to CN201611129599.4A priority Critical patent/CN106750919A/en
Publication of CN106750919A publication Critical patent/CN106750919A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56Winding and joining, e.g. winding spirally
    • B29C53/566Winding and joining, e.g. winding spirally for making tubular articles followed by compression
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/14Copolymers of propene
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/12Rigid pipes of plastics with or without reinforcement
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes

Abstract

The present invention proposes a kind of double orientation polyolefin wrapped tube and preparation method thereof, the radial strength of tubing is that, by the polyolefin inner tube and stretching orientation polyolefine band common guarantee of interior axially and radially double orientation, rotary extrusion machine causes that polyolefin inner tube strand has orientation both axially and radially in the present invention;In addition, by adjusting hauling speed, tubing temperature, winding layer level of stretch, twining to tie up angle and twine and tie up the parameters such as the number of plies, double orientation processing can be carried out to the tubing of different polyolefin, the need for meeting the tube forming of different material, it is allowed to be more widely applied;Production technology of the invention makes molecule in polyolefin pipe be respectively provided with the controllable degree of orientation on axially and radially, the change of molecular chain orientation degree can make the intensity and toughness of tubing obtain substantial lifting on different directions, can be greatly enhanced the intensity and toughness of tubing;By by the polyolefin inner tube of same alike result and polyolefin tapes welding, wind and roll, be allowed to combine it is more firm.

Description

A kind of double orientation polyolefin wrapped tube and preparation method thereof
Technical field
The present invention relates to Polymer moulding technical field, more particularly to a kind of double orientation polyolefin wrapped tube and its Preparation method.
Background technology
Polyolefin has excellent stability, is embodied in:1) chemical stability is good, can be used for feedwater piping, food bag The fields such as dress;2) weather resistance is superior, especially cryogenic property.The always larger pipeline material of application amount, China in the world Plastic conduit industry development is swift and violent, it has also become one of big country of the production of world's plastic conduit and application.It is prepared by polyolefin pipe During have the draw of radial direction, strand can be axially oriented, and axial strength is higher;But due to the limitation of calibration sleeve, point The subchain degree of orientation diametrically is limited, causes to there are following some shortcomings during polyolefin pipe use:First, initially hold Pressure energy power is low;2nd, toughness and intensity are relatively low, and cracking resistance impact property is poor.
At present, it is the offer that solves the above problems by twining the attached winding layer containing reinforcing material on internal layer polyolefin pipe A kind of thinking.But no matter non-metallic fibers packing material is added in winding layer, or metal tube or net reinforcing material can draw Play problems with:First, the degree of orientation of the filling reinforcing material in band is wound is the key factor for determining winding band strength, it is necessary to list Solely control, increases equipment investment, and technique is more also complex.2nd, the shrinkage factor of reinforcing material and polyolefin resin matrix is not Together, lamination can be caused when the temperature difference is larger, when metal is reinforcing material material, this point becomes apparent;3rd, reinforcing material Need additional adhesive or compatilizer to ensure with interlaminar resin compatibility in winding band, increase tubing manufacturing cost.
The content of the invention
In view of this, the present invention proposes the double orientation polyolefin wrapped tube and its system that a kind of intensity is high, be firmly combined with Preparation Method.
The technical proposal of the invention is realized in this way:On the one hand, wound the invention provides a kind of double orientation polyolefin Tubing, it includes the polyolefin inner tube of axially and radially double orientation, and winding and stretching of the welding on the outside of polyolefin inner tube Orientation polyolefine band, by following components by weight, the rotary extrusion after melting is obtained the polyolefin inner tube:
90~100 parts of polyolefin
0~10 part of auxiliary agent.
On the basis of above technical scheme, it is preferred that the polyolefin is polypropylene, polyethylene or polybutene.
On the basis of above technical scheme, it is preferred that the polyolefin is polypropylene, the auxiliary agent is beta nucleater.Enter One step is preferred, and the beta nucleater is fragrant same clan beta nucleater, terres rares beta nucleater, organic acid beta nucleater and organic acid β At least one in salt compounds beta nucleater.It is furthermore preferred that fragrant same clan's beta nucleater be TMB series compounds, CHB-5 compounds, NU-100 compounds or NB-328 compounds;Terres rares beta nucleater is WBG serial rare-earth compounds;It is organic Acids beta nucleater is DCHT compounds, different diacid hydrazine or suberic acid.
Second aspect, the invention provides the preparation method of double orientation polyolefin wrapped tube described in first aspect, including Following steps,
S1, is placed in rotary extrusion device after polyolefin and auxiliary agent are sufficiently mixed, control plug is relative to mouth mold with 3 The rotating speed of~25rpm/min, in 180~260 DEG C of melt zone temperature, mouth mold 150~240 DEG C of temperature of section carries out melting rotation and squeezes Go out, the pipe embryo cooling sizing of extrusion obtains the polyolefin inner tube of axially and radially double orientation;
S2, polyolefin inner tube temperature is reduced on glass transformation temperature, below fusing point;
S3, is wound using the stretching orientation polyolefine band of melt surface to polyolefin inner tube, cold through rolling after winding But shape, you can obtain double orientation polyolefin wrapped tube.
On the basis of above technical scheme, it is preferred that in the step S3, adjacent stretching orientation polyolefine band it Between apply PUR.
On the basis of above technical scheme, it is preferred that in the step S3, the stretching orientation polyolefine band is around poly- Alkene inner tube winds more than two-layer or two-layer.
On the basis of above technical scheme, it is preferred that in the step S3, the stretching orientation polyolefine band is provided with Two or more, one another around polyolefin inner tube cross winding.
Double orientation polyolefin wrapped tube of the invention and preparation method thereof has following beneficial effect relative to prior art Really:
The radial strength of tubing is orientated by the polyolefin inner tube and stretching of interior axially and radially double orientation in the present invention Polyolefin tapes common guarantee, rotary extrusion machine causes that polyolefin inner tube strand has orientation both axially and radially;In addition, passing through Adjustment hauling speed, tubing temperature, winding layer level of stretch, twine to tie up angle and twine and tie up the parameters such as the number of plies, can be to different polyenes The tubing of hydrocarbon carries out double orientation processing, the need for meeting the tube forming of different material, is allowed to be more widely applied;It is of the invention Production technology makes molecule in polyolefin pipe be respectively provided with the controllable degree of orientation on axially and radially, strand on different directions The change of the degree of orientation can make the intensity and toughness of tubing obtain substantial lifting, can be greatly enhanced the intensity of tubing and tough Degree;By by the polyolefin inner tube of same alike result and polyolefin tapes welding, wind and roll, be allowed to combine it is more firm.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below by to be used needed for embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability For the those of ordinary skill of domain, on the premise of not paying creative work, can also obtain other attached according to these accompanying drawings Figure.
Fig. 1 is a kind of cross section structure diagram of double orientation polyolefin wrapped tube of the invention;
Fig. 2 is the cross section structure diagram of second double orientation polyolefin wrapped tube of the invention;
Fig. 3 is the cross section structure diagram of the third double orientation polyolefin wrapped tube of the invention.
Specific embodiment
Below in conjunction with embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute The implementation method of description is only a part of implementation method of the invention, rather than whole implementation methods.Based in the present invention Implementation method, the every other embodiment party that those of ordinary skill in the art are obtained under the premise of creative work is not made Formula, belongs to the scope of protection of the invention.
As shown in figure 1, double orientation polyolefin wrapped tube of the invention, its polyolefin for including axially and radially double orientation Inner tube 1, and the stretching orientation polyolefine band 2 of winding and welding on the outside of polyolefin inner tube 1, the polyolefin inner tube 1 is by pressing The following components of weight portion meter rotary extrusion after melting is obtained:
90~100 parts of polyolefin
0~10 part of auxiliary agent.
Wherein, the stretching orientation polyolefine can use solid polyolefin tapes with 2, as shown in Figure 1, it is also possible to using empty The polyolefin tapes of the heart, as shown in Figure 2.
Specifically, its preparation method is comprised the following steps,
S1, is placed in rotary extrusion device after polyolefin and auxiliary agent are sufficiently mixed, control plug is relative to mouth mold with 3 The rotating speed of~25rpm/min, in 180~260 DEG C of melt zone temperature, mouth mold 150~240 DEG C of temperature of section carries out melting rotation and squeezes Go out, the pipe embryo cooling sizing of extrusion obtains the polyolefin inner tube 1 of axially and radially double orientation;
S2, the temperature of polyolefin inner tube 1 is reduced on glass transformation temperature, below fusing point;
S3, is wound using stretching orientation polyolefine 2 pairs of polyolefin inner tubes 1 of band of melt surface, through rolling after winding, Cooling and shaping, you can obtain double orientation polyolefin wrapped tube.
Wherein, in the step S3, the stretching orientation polyolefine band 2 is disposed about polyolefin inner tube 1 and winds More than two-layer or two-layer, as shown in Figure 3.
Certain, in the step S3, the stretching orientation polyolefine band 2 may be configured as two or more, each other Around the cross winding of polyolefin inner tube 1, as shown in Figure 2.
Embodiment 1
In the present embodiment, each raw material components of use are as follows:
Polypropylene PPR 99.9kg
Nucleator CHB-5 0.1kg.
Preparation process is as follows:
CHB-5 nucleators are well mixed with polypropylene PPR, extruder melt zone temperature is 220 DEG C, die temperature is Melting rotary extrusion is carried out at 170 DEG C, with Mandrel Rotating speed as 8rpm/min, radial and axial double orientation pipe embryo, warp is extruded Cooling sizing, obtains the polyolefin inner tube of axially and radially double orientation;
Feeding winding area, by polyolefin inner tube temperature adjustment to 150 DEG C, the stretching of melt surface is orientated polyene by wrapping machine Hydrocarbon band is wound in polyolefin inner tube outer surface, in winding process, mutual connection is melted between winding band adjacent wall, is combined into one Body, is rolled by spiral rolling device to tube wall, makes tubing wall regular round and smooth, cooling and shaping, you can is obtained double orientation and is gathered Alkene wrapped tube.
In aforementioned manners, be obtained external diameter 110mm, standard size ratio (SDR) be 6 double orientation polyolefin pipe operating pressure with Pure PPR solid wall pipes are as shown in table 1 compared to result:
Table 1
A diameter of 110mm is prepared in aforementioned manners, and operating pressure (MOP) is 1.0 double orientation polyolefin pipe operating pressure Result is as shown in table 2 compared with pure PPR solid wall pipes:
Table 2
Embodiment 2
In the present embodiment, each raw material components of use are as follows:
Polypropylene PPR
Preparation process is as follows:
Polypropylene PPR is put into extruder, regulation extruder melt zone temperature is 220 DEG C, die temperature is to enter at 170 DEG C Row melting rotary extrusion, with Mandrel Rotating speed as 8rpm/min, extrudes radial and axial double orientation pipe embryo, through cooling down sizing, Obtain the polyolefin inner tube of axially and radially double orientation;
Feeding winding area, by polyolefin inner tube temperature adjustment to 150 DEG C, the stretching of melt surface is orientated polyene by wrapping machine Hydrocarbon band is wound in polyolefin inner tube outer surface, in winding process, hot melt is applied in adjacent stretching orientation polyolefine interband Glue, is combined into one, and winding material is regularly arranged, overlays the pipe that the integral helical wound ribbon of bonding constitutes double orientation polyolefin pipe Material wall;Finally, tube wall is rolled by spiral rolling device, makes tubing wall regular round and smooth, cooling and shaping, you can obtain double Orientation polyolefine wrapped tube.
In aforementioned manners, external diameter 110mm is obtained, standard size ratio (SDR) is 6 double orientation polyolefin wrapped tube work Pressure result compared with pure PPR solid wall pipes is as shown in table 3:
Table 3
A diameter of 110mm is prepared in aforementioned manners, and operating pressure (MOP) is 1.0 double orientation polyolefin wrapped tube work Make pressure result compared with pure PPR solid wall pipes as shown in table 4:
Table 4
Embodiment 3
In the present embodiment, each raw material components of use are as follows:
Polythene PE 100
Preparation process is as follows:
Polythene PE 100 is put into extruder, regulation extruder melt zone temperature is 210 DEG C, and die temperature is at 170 DEG C Melting rotary extrusion is carried out, with Mandrel Rotating speed as 8rpm/min, radial and axial double orientation pipe embryo is extruded, it is fixed through cooling Footpath, obtains the polyolefin inner tube of axially and radially double orientation;
Feeding winding area, by polyolefin inner tube temperature adjustment to 150 DEG C, the stretching of melt surface is orientated polyene by wrapping machine Hydrocarbon band is wound in polyolefin inner tube outer surface, in winding process, hot melt is applied in adjacent stretching orientation polyolefine interband Glue, is combined into one, and winding material is regularly arranged, overlays the pipe that the integral helical wound ribbon of bonding constitutes double orientation polyolefin pipe Material wall;Finally, tube wall is rolled by spiral rolling device, makes tubing wall regular round and smooth, cooling and shaping, you can obtain double Orientation polyolefine wrapped tube.
In aforementioned manners, external diameter 110mm is obtained, standard size ratio (SDR) is 11 double orientation polyolefin wrapped tube work Make pressure result compared with pure PE100 solid wall pipes as shown in table 5:
Table 5
External diameter 110mm is prepared in aforementioned manners, and operating pressure (MOP) is 1.25 double orientation polyolefin wrapped tube work Pressure result compared with pure PE100 solid wall pipes is as shown in table 6:
Table 6
Embodiment 4
In the present embodiment, each raw material components of use are as follows:
Polythene PE 100
Preparation process is as follows:
Polythene PE 100 is put into extruder, regulation extruder melt zone temperature is 220 DEG C, and die temperature is at 170 DEG C Melting rotary extrusion is carried out, with Mandrel Rotating speed as 8rpm/min, radial and axial double orientation pipe embryo is extruded, it is fixed through cooling Footpath, obtains the polyolefin inner tube of axially and radially double orientation;
Feeding winding area, by polyolefin inner tube temperature adjustment to 150 DEG C, the stretching of melt surface is orientated polyene by wrapping machine Hydrocarbon band is wound in polyolefin inner tube outer surface, in winding process, hot melt is applied in adjacent stretching orientation polyolefine interband Glue, is combined into one, and winding material is regularly arranged, overlays the pipe that the integral helical wound ribbon of bonding constitutes double orientation polyolefin pipe Material wall;Finally, tube wall is rolled by spiral rolling device, makes tubing wall regular round and smooth, cooling and shaping, you can obtain double Orientation polyolefine wrapped tube.
In aforementioned manners, external diameter 110mm is obtained, standard size ratio (SDR) is 13.6 double orientation polyolefin wrapped tube Operating pressure result compared with pure PE100 solid wall pipes is as shown in table 7:
Table 7
External diameter 110mm is prepared in aforementioned manners, and operating pressure (MOP) is 1.0 double orientation polyolefin wrapped tube work Pressure result compared with pure PE100 solid wall pipes is as shown in table 8:
Table 8
Better embodiment of the invention is the foregoing is only, is not intended to limit the invention, it is all of the invention Within spirit and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.

Claims (8)

1. a kind of double orientation polyolefin wrapped tube, it is characterised in that:It includes the polyolefin inner tube of axially and radially double orientation (1), and winding and stretching orientation polyolefine band (2) of the welding on the outside of polyolefin inner tube (1), the polyolefin inner tube (1) By following components by weight, rotary extrusion is obtained after melting:
90~100 parts of polyolefin
0~10 part of auxiliary agent.
2. double orientation polyolefin wrapped tube as claimed in claim 1, it is characterised in that:The polyolefin is polypropylene, gathers Ethene or polybutene.
3. double orientation polyolefin wrapped tube as claimed in claim 1, it is characterised in that:The polyolefin is polypropylene, institute Auxiliary agent is stated for beta nucleater.
4. double orientation polyolefin wrapped tube as claimed in claim 3, it is characterised in that:The beta nucleater is fragrance same clan β At least one in nucleator, terres rares beta nucleater, organic acid beta nucleater and organic acid β salt compounds beta nucleaters.
5. the preparation method of double orientation polyolefin wrapped tube as claimed in claim 1, it is characterised in that:Including following step Suddenly,
S1, is placed in rotary extrusion device after polyolefin and auxiliary agent are sufficiently mixed, control plug relative to mouth mold with 3~ The rotating speed of 25rpm/min, in 180~260 DEG C of melt zone temperature, mouth mold 150~240 DEG C of temperature of section carries out melting rotary extrusion, The pipe embryo cooling sizing of extrusion, obtains the polyolefin inner tube (1) of axially and radially double orientation;
S2, polyolefin inner tube (1) temperature is reduced on glass transformation temperature, below fusing point;
S3, is wound using stretching orientation polyolefine band (2) of melt surface to polyolefin inner tube (1), through rolling after winding, Cooling and shaping, you can obtain double orientation polyolefin wrapped tube.
6. the preparation method of double orientation polyolefin wrapped tube as claimed in claim 5, it is characterised in that:The step S3 In, apply PUR between adjacent stretching orientation polyolefine band (2).
7. the preparation method of double orientation polyolefin wrapped tube as claimed in claim 5, it is characterised in that:The step S3 In, stretching orientation polyolefine band (2) winds more than two-layer or two-layer around polyolefin inner tube (1).
8. the preparation method of double orientation polyolefin wrapped tube as claimed in claim 5, it is characterised in that:The step S3 In, stretching orientation polyolefine band (2) is provided with two or more, one another around polyolefin inner tube (1) cross winding.
CN201611129599.4A 2016-12-09 2016-12-09 A kind of double orientation polyolefin wrapped tube and preparation method thereof Pending CN106750919A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109318515A (en) * 2018-10-19 2019-02-12 吴政轩 A kind of production method of plastic tube

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103073793A (en) * 2013-01-09 2013-05-01 四川大学 High-strength and high-toughness polypropylene pipe and preparation method thereof
CN103206580A (en) * 2013-04-08 2013-07-17 青岛中科昊泰新材料科技有限公司 Ultrahigh molecular-weight polyethylene composite tubing and production method thereof
CN103423522A (en) * 2013-04-23 2013-12-04 杭州联通管业有限公司 Large-diameter reinforced composite polyethylene winding structure wall tube and manufacture process thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103073793A (en) * 2013-01-09 2013-05-01 四川大学 High-strength and high-toughness polypropylene pipe and preparation method thereof
CN103206580A (en) * 2013-04-08 2013-07-17 青岛中科昊泰新材料科技有限公司 Ultrahigh molecular-weight polyethylene composite tubing and production method thereof
CN103423522A (en) * 2013-04-23 2013-12-04 杭州联通管业有限公司 Large-diameter reinforced composite polyethylene winding structure wall tube and manufacture process thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109318515A (en) * 2018-10-19 2019-02-12 吴政轩 A kind of production method of plastic tube

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