CN109734988A - A kind of high ring rigidity internal-rib enhancing bellows and preparation method thereof - Google Patents
A kind of high ring rigidity internal-rib enhancing bellows and preparation method thereof Download PDFInfo
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- CN109734988A CN109734988A CN201910042051.3A CN201910042051A CN109734988A CN 109734988 A CN109734988 A CN 109734988A CN 201910042051 A CN201910042051 A CN 201910042051A CN 109734988 A CN109734988 A CN 109734988A
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Abstract
The present invention relates to a kind of high ring rigidity internal-ribs to enhance bellows, it is made with internal layer ingredient by extruder extrusion molding by outer layer ingredient, the outer layer ingredient comprises the following components in parts by weight: high density polyethylene (HDPE) 85-100, polypropylene 15-25, filler 5-15, expanding material 1-2 and Masterbatch 1-3；The internal layer ingredient comprises the following components in parts by weight: high density polyethylene (HDPE) 85-100, polypropylene 15-25, expanding material 1-2 and Masterbatch 1-3.Compared with prior art, internal-rib of the invention enhancing bellows has bigger ring stiffness, rice heavy and light, and substantially reduces cost of material.
Description
Technical field
The present invention relates to bellowss, more particularly, to a kind of high ring rigidity internal-rib enhancing bellows and preparation method thereof.
Background technique
Currently, the maximum hot spot of building water supply and drainage is the extensive use of new type plastic pipe.Normal discharge cast iron pipe and biography
The Cement Concrete pipe of system, it is perishable, from great, transport construction inconvenience etc. due to and replaced.Underground drainage plastics pipes
Road has light-weight, corrosion-resistant, good airproof performance, long service life, transport installation side adaptable to basal plane and basal plane variation
Just, many advantages such as project cost is low.Buried drain pipe road is mainly used in large-scale blowdown, exhaust, subway, tunnel, mine etc.
Ventilation, the fields such as farmland low pressure irrigation are born internal pressure capability to tubing and are required less, but require the ability of its critical external compressive resistance higher.
Ring stiffness is the comprehensive parameters of underground drainage plastics pipes critical external compressive resistance load capacity, and ring is all widely applied in the world at present
This numerical indication of rigidity indicates the critical external compressive resistance load capacity of underground drainage plastics pipes.If the ring stiffness of tubing is too small, pipe
Material may occur excessive deformation or lateral deflection unstable failure occurs., whereas if ring stiffness selects get Tai Gao, necessarily using excessive
Cross sectional moment of inertia, will cause too many with material, and cost is excessively high.So under the premise of not improving the manufacturing cost of tubing, people
Invented double-wall corrugated pipe, double-wall corrugated pipe compared with walled tube, under caliber and the identical situation of sectional area have compared with
Big ring stiffness, receiving external pressure weight bearing power is strong, good combination property, and mostly with high density polyethylene (HDPE) (HDPE) and hard polychlorostyrene
Ethylene (PVC-U) is primary raw material.
HDPE double-wall corrugated pipe is strong with its corrosion resistance, surface is less scaling, frictional resistance is small, weatherability is excellent, processing
The features such as performance is good and long service life (generally underground about 50 years, in air about 25 years) and be more widely applied.But
Buried at present to use HDPE double-wall corrugated pipe, the greatest problem of especially heavy caliber HDPE double-wall corrugated pipe application is that ring stiffness is low,
Critical external compressive resistance ability is poor, often causes tubing buckling distortion because of external pressure load excessive, using plastics to many big and medium-sized cities
Lower drainage pipe brings certain limitation, and this greatly limits its application ranges.
For manufacturer, the ring stiffness of tubing how is effectively improved, and maintains other performances in acceptability limit,
It is one urgently to consider the problems of and solve.Under the premise of extrusion process is certain, the structure of tubing and the power of raw materials for plastics production
It learns performance and determines the mechanical property of product, therefore can pay attention to respectively from these two aspects.Come from the angle of pipe structure
It says, the ring stiffness of tubing can be improved by increasing the wall thickness of inside and outside wall, that is, increases the meter Chong of tubing, but this method can operate
Space is smaller, and on the one hand reason is that wall thickness is blocked up can reduce tubing inner space, influences the passability of fluid, is unsatisfactory for national standard
Size requirement to internal diameter；On the other hand, material quantity increasing can improve production cost and transportation cost, and the market for reducing product is competing
Strive power.Consider from raw material, if it is possible to try to improve the elasticity modulus of raw material, while can guarantee other property of pipe material product again
It can solve the problems, such as that ring stiffness is low in acceptability limit.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems and provides a kind of internal-rib enhancing wave with superelevation ring stiffness
Line pipe and preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions:
A kind of high ring rigidity internal-rib enhancing bellows, is made with internal layer ingredient by extruder extrusion molding, institute by outer layer ingredient
It states outer layer ingredient to comprise the following components in parts by weight: high density polyethylene (HDPE) 85-100, polypropylene 15-25, filler 5-15, expanding material
1-2 and Masterbatch 1-3；The internal layer ingredient comprises the following components in parts by weight: high density polyethylene (HDPE) 85-100, polypropylene 15-
25, expanding material 1-2 and Masterbatch 1-3.
Preferably, the outer layer ingredient comprises the following components in parts by weight: high density polyethylene (HDPE) 90-100, polypropylene 20-
25, filler 10-15, expanding material 1-2 and Masterbatch 1-3；The internal layer ingredient comprises the following components in parts by weight: high-density polyethylene
Alkene 90-100, polypropylene 20-25, expanding material 1-2 and Masterbatch 1-3.
Preferably, the filler is calcium carbonate, SCM whisker and the superfine glass beads that mass ratio is 1-2:1-2:1-3
Mixture.
Preferably, the calcium carbonate is that surface modifier carries out the modified obtained colloid carbonic acid in surface to precipitated calcium carbonate
Calcium.
Preferably, the superfine glass beads partial size is at 3-5 μm.
Preferably, the SCM whisker is produced by Mianyang, Sichuan decent job new material Co., Ltd.
Preferably, the expanding material is maleic anhydride inoculated polypropylene.
Preferably, the Masterbatch is black Masterbatch or blue Masterbatch.
Preferably, the high density polyethylene (HDPE) uses PE80 grades or PE100 grades.
A kind of preparation method of high ring rigidity internal-rib enhancing bellows, specifically includes the following steps:
(1) according to inside and outside layer ingredient, adding raw materials into high-speed mixer respectively is uniformly mixed it；
(2) uniformly mixed material is sent in extruder respectively, and material is plasticized into molten under heating, pressurization, and
Corresponding pipe is squeezed out with the extrusion die of different size and calibration sleeve；
(3) by ripple module and flaring module cooling and shaping, using length measuring device and cutter device, tubing is cut by fixed length
It is disconnected, automatic expanding machine is finally entered, expanding is carried out to tubing head to get product is arrived.
The invention has the characteristics that:
1, existing internal-rib enhancing bellows is made using single high density polyethylene (HDPE) (HDPE) substrate, and ring stiffness is not high, and poly- third
The modular ratio HDPE high of alkene (PP), the present invention are mixed by the HDPE of rational formula with PP, big using HDPE compared to single
Amplitude improves the hardness of product.For HDPE ratio PP more resistant to low temperature, the effect that resists cold is more preferable, general low temperature resistant subzero -20 degree of PP plastics
Left and right, HDPE polyethylene can be will not cracking with low temperature resistant subzero 40-60 degree use, and be not in stress whitening phenomenon.This hair
The advantages of being compounded with high density polyethylene (HDPE) 85-100 with polypropylene 15-25 in bright substrate, combining the two, bellows obtained
Effect is more preferable.
2, since the structure of bellows determines that outer wall is bigger to the contribution of product ring stiffness, the ring of tubing is improved
The elasticity modulus of rigidity, outer wall raw material is bigger than inner wall, and the inside and outside layer ingredient of internal-rib enhancing bellows of the present invention has difference
Formula, joined the filler of high elastic modulus in outer layer ingredient, so that outer wall has bigger rigidity, due to the addition of filler
The original performance of product can be changed to a certain extent, with gradually increasing for filer content, the stiffness and strength of tubing gradually increase
Add, but the characteristic of thermoplastic flexibility and good processing performance can be lost to a certain extent, if filler was added
More, tubing can gradually lose the feature of thermoplastic plastic pipe, and tube wall can become brittleness, until can not extrusion molding, therefore, this
The parts by weight of invention limitation filler are in 5-15.Meanwhile in inner wall ingredient there is no be added filler, thus guarantee inner wall have compared with
Good flexibility and good processing performance guarantees that bellows has more preferably performance on the whole.
3, filler is the mixture of calcium carbonate, SCM whisker and superfine glass beads, by the modified obtained colloidal-carbon in surface
Sour calcium particle is sufficiently uniformly dispersed in base polyethylene, is formed stress concentration point, can fully be absorbed ballistic work, make material
Material is unlikely to recurring structure destruction when by external pressure, to improve the apparent elastic modulus of mixed ingredients.Meanwhile adding
The SCM whisker and superfine glass beads entered has synergistic effect, and SCM whisker is in one-dimensional single crystal body structure, and diameter is 0.2-0.8 μ
M, length are 20-60 μm, have high mechanical property, and tensile strength is up to 1.2 GPa, and tensile modulus of elasticity is up to 32GPa,
With apparent enhancing and increase just effect；Partial size can be filled and mixed be dissipated in high density polyethylene (HDPE) in 3-5 μm of superfine glass beads
In HDPE, superfine glass beads and HDPE through organic-treating can form better interface cohesion, can inhale under stress
Impact deformation energy is received, the brittle-tough transition of HDPE matrix is promoted, this inorganic rigid particle plays the role of toughening, makes ripple
The creep rate of pipe is lower, and " meter Chong " is lighter.
In addition, the present invention is other than the ring stiffness for being able to ascend tubing, moreover it is possible to substantially reduce cost of material.
Specific embodiment
The present invention is described in detail combined with specific embodiments below, but should be in no way restrictive.
Embodiment 1
A kind of high ring rigidity internal-rib enhancing bellows, is made by extruder extrusion molding with internal layer ingredient by outer layer ingredient, is had
Body formula is shown in Table 1.Wherein, filler be mass ratio be 1:1:1 calcium carbonate, SCM whisker and superfine glass beads mixture,
In, calcium carbonate be aluminate coupling agent to precipitated calcium carbonate carry out surface modification obtains, superfine glass beads partial size at 3-5 μm,
SCM whisker is produced by Mianyang, Sichuan decent job new material Co., Ltd.Expanding material is maleic anhydride inoculated polypropylene, and Masterbatch is
Black Masterbatch, high density polyethylene (HDPE) use PE80 grades.
It specifically is prepared as follows to obtain, wherein used equipment is high-speed mixer: SHR type, Zhangjagang City
New machinery plant；Double screw extruder: SHJ-50 type, Nanjing Jie Ente electromechanics Co., Ltd；Bellows production line: Cincinnati
X-type double-wall corrugated pipe extruding production line.
(1) according to inside and outside layer ingredient, adding raw materials into high-speed mixer respectively is uniformly mixed it；
(2) uniformly mixed material is sent in extruder respectively, and material is plasticized into molten under heating, pressurization, and
Corresponding pipe is squeezed out with the extrusion die of different size and calibration sleeve；
(3) by ripple module and flaring module cooling and shaping, using length measuring device and cutter device, tubing is cut by fixed length
It is disconnected, automatic expanding machine is finally entered, expanding is carried out to tubing head to get product is arrived, obtained ripple pipe diameter is
800mm, ring stiffness characterization equipment are built X-type tensile testing machine using gold, are tested by GB/T14152-2011, concrete outcome is shown in
Table 2.
Embodiment 2
A kind of high ring rigidity internal-rib enhancing bellows, is made by extruder extrusion molding with internal layer ingredient by outer layer ingredient, is had
Body formula is shown in Table 1.Wherein, filler be mass ratio be 2:1:2 calcium carbonate, SCM whisker and superfine glass beads mixture, it is high
Density polyethylene uses PE100 grades, and, with embodiment 1, concrete outcome is shown in Table 2 for remaining.
Embodiment 3
A kind of high ring rigidity internal-rib enhancing bellows, is made by extruder extrusion molding with internal layer ingredient by outer layer ingredient, is had
Body formula is shown in Table 1.Wherein, filler be mass ratio be 1:1:2 calcium carbonate, SCM whisker and superfine glass beads mixture,
Remaining same embodiment 1, concrete outcome is shown in Table 2.
Embodiment 4-6
A kind of high ring rigidity internal-rib enhancing bellows, is made by extruder extrusion molding with internal layer ingredient by outer layer ingredient, is had
Body formula is shown in Table 1, and, with embodiment 1, concrete outcome is shown in Table 2 for remaining.
Comparative example 1
Specific formula is shown in Table 1, does not add polypropylene in ingredient, and the preparation method is the same as that of Example 1, and concrete outcome is shown in Table 2.
Comparative example 2
Specific formula is shown in Table 1, does not add high density polyethylene (HDPE) in ingredient, and the preparation method is the same as that of Example 1, and concrete outcome is shown in Table 2.
Comparative example 3
Specific formula is shown in Table 1, does not add filler in ingredient, and, with embodiment 2, concrete outcome is shown in Table 2 for remaining.
Comparative example 4
Specific formula is shown in Table 1, and filler used in ingredient uses calcium carbonate one-component, remaining is the same as embodiment 2, concrete outcome
It is shown in Table 2.
As shown in Table 2, the ring stiffness of large scale 800mm bellows produced by the present invention is all larger than 8 kN/m2, reach
SN8 grades of requirements.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (10)
1. a kind of high ring rigidity internal-rib enhances bellows, it is made with internal layer ingredient by extruder extrusion molding by outer layer ingredient,
It is characterized in that, the outer layer ingredient comprises the following components in parts by weight: high density polyethylene (HDPE) 85-100, polypropylene 15-25, filling out
Expect 5-15, expanding material 1-2 and Masterbatch 1-3；The internal layer ingredient comprises the following components in parts by weight: high density polyethylene (HDPE) 85-
100, polypropylene 15-25, expanding material 1-2 and Masterbatch 1-3.
2. a kind of high ring rigidity internal-rib according to claim 1 enhances bellows, which is characterized in that the outer layer ingredient packet
Include the component of following parts by weight: high density polyethylene (HDPE) 90-100, polypropylene 20-25, filler 10-15, expanding material 1-2 and Masterbatch
1-3；The internal layer ingredient comprises the following components in parts by weight: high density polyethylene (HDPE) 90-100, polypropylene 20-25, expanding material 1-2
With Masterbatch 1-3.
3. a kind of high ring rigidity internal-rib according to claim 1 or 2 enhances bellows, which is characterized in that the filler is
Mass ratio is the mixture of the calcium carbonate of 1-2:1-2:1-3, SCM whisker and superfine glass beads.
4. a kind of high ring rigidity internal-rib according to claim 3 enhances bellows, which is characterized in that the calcium carbonate is table
Face modifying agent carries out the modified obtained gel calcium carbonate in surface to precipitated calcium carbonate.
5. a kind of high ring rigidity internal-rib according to claim 3 enhances bellows, which is characterized in that the superfine glass is micro-
Bead diameter is at 3-5 μm.
6. a kind of high ring rigidity internal-rib according to claim 3 enhances bellows, which is characterized in that the SCM whisker by
The production of Mianyang, Sichuan decent job new material Co., Ltd.
7. a kind of high ring rigidity internal-rib according to claim 1 or 2 enhances bellows, which is characterized in that the expanding material
For maleic anhydride inoculated polypropylene.
8. a kind of high ring rigidity internal-rib according to claim 1 or 2 enhances bellows, which is characterized in that the Masterbatch
For black Masterbatch or blue Masterbatch.
9. a kind of high ring rigidity internal-rib according to claim 1 or 2 enhances bellows, which is characterized in that the high density
Polyethylene uses PE80 grades or PE100 grades.
10. a kind of preparation method of high ring rigidity internal-rib enhancing bellows as claimed in claim 1 or 2, which is characterized in that tool
Body the following steps are included:
(1) according to inside and outside layer ingredient, adding raw materials into high-speed mixer respectively is uniformly mixed it；
(2) uniformly mixed material is sent in extruder respectively, and material is plasticized into molten under heating, pressurization, and
Corresponding pipe is squeezed out with the extrusion die of different size and calibration sleeve；
(3) by ripple module and flaring module cooling and shaping, using length measuring device and cutter device, tubing is cut by fixed length
It is disconnected, automatic expanding machine is finally entered, expanding is carried out to tubing head to get product is arrived.
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| CN201910042051.3A CN109734988B (en) | 2019-01-17 | 2019-01-17 | High-ring-stiffness inner-rib reinforced corrugated pipe and preparation method thereof |
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Cited By (8)
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| CN110513545A (en) * | 2019-08-30 | 2019-11-29 | 谭连平 | Plastic overmold two flat walls internal-rib steel band reinforced winding pipe material |
| CN111038006A (en) * | 2019-12-25 | 2020-04-21 | 上海新上化高分子材料有限公司 | Fresh air shield pipe and preparation method thereof |
| CN111718531A (en) * | 2020-07-22 | 2020-09-29 | 广东中深塑科技有限公司 | Environment-friendly high-environmental-rigidity HDPE double-wall corrugated pipe and preparation method thereof |
| CN112080057A (en) * | 2020-09-17 | 2020-12-15 | 江西龙正科技发展有限公司 | Polyethylene sewage discharge pipe and preparation method thereof |
| CN112344109A (en) * | 2020-11-06 | 2021-02-09 | 贵州黔峰实业有限公司 | Preparation and production process of modified polypropylene flat-wall reinforced corrugated pipe |
| CN113337028A (en) * | 2021-07-20 | 2021-09-03 | 福建师范大学泉港石化研究院 | Plastic wall pipe and manufacturing method thereof |
| CN114133652A (en) * | 2021-12-06 | 2022-03-04 | 广东联塑科技实业有限公司 | Multifunctional HDPE multilayer composite corrugated pipe and preparation method thereof |
| CN115366491A (en) * | 2022-09-29 | 2022-11-22 | 安徽超星新材料科技有限公司 | Anti-corrosion high-ring-rigidity plastic pipeline |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513545A (en) * | 2019-08-30 | 2019-11-29 | 谭连平 | Plastic overmold two flat walls internal-rib steel band reinforced winding pipe material |
| CN111038006A (en) * | 2019-12-25 | 2020-04-21 | 上海新上化高分子材料有限公司 | Fresh air shield pipe and preparation method thereof |
| CN111718531A (en) * | 2020-07-22 | 2020-09-29 | 广东中深塑科技有限公司 | Environment-friendly high-environmental-rigidity HDPE double-wall corrugated pipe and preparation method thereof |
| CN112080057A (en) * | 2020-09-17 | 2020-12-15 | 江西龙正科技发展有限公司 | Polyethylene sewage discharge pipe and preparation method thereof |
| CN112344109A (en) * | 2020-11-06 | 2021-02-09 | 贵州黔峰实业有限公司 | Preparation and production process of modified polypropylene flat-wall reinforced corrugated pipe |
| CN113337028A (en) * | 2021-07-20 | 2021-09-03 | 福建师范大学泉港石化研究院 | Plastic wall pipe and manufacturing method thereof |
| CN114133652A (en) * | 2021-12-06 | 2022-03-04 | 广东联塑科技实业有限公司 | Multifunctional HDPE multilayer composite corrugated pipe and preparation method thereof |
| CN115366491A (en) * | 2022-09-29 | 2022-11-22 | 安徽超星新材料科技有限公司 | Anti-corrosion high-ring-rigidity plastic pipeline |
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