CN107602986A - The production method of bellows - Google Patents
The production method of bellows Download PDFInfo
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- CN107602986A CN107602986A CN201710919806.4A CN201710919806A CN107602986A CN 107602986 A CN107602986 A CN 107602986A CN 201710919806 A CN201710919806 A CN 201710919806A CN 107602986 A CN107602986 A CN 107602986A
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- calcium carbonate
- production method
- bellows
- mass ratio
- talcum powder
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to tubing preparing technical field, more particularly to a kind of production method of bellows, including following preparation process：1) take calcium carbonate, talcum powder to be well mixed with high density polyvinyl-chloride, be sent into double screw extruder and extrude, cool down, be granulated, obtain modification high-density polyethylene particle；2) by modification high-density polyethylene particle and color masterbatch according to mass ratio it is again 100:25 ratio is well mixed, and obtains compound；3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, gets product.While the production method of the bellows of the present invention can improve the ring stiffness of bellows, other performances are maintained in qualified scope.
Description
Technical field
The invention belongs to tubing preparing technical field, more particularly to a kind of production method of bellows.
Background technology
HDPE double-wall corrugated pipes, abbreviation PE bellowss, the beginning of the eighties succeed in developing first in Germany.By the hair of more than ten years
Open up and perfect, via single Cultivar development to complete product line.In production technology and use technology very
It is ripe.Due to its excellent performance and the cost of relatively economical, have been obtained for greatly promoting in developed countries such as America and Europes and
Using.Double-wall corrugated pipe is a kind of novel light tubing using high density polyethylene (HDPE) as raw material, have it is in light weight, high pressure resistant,
The features such as good toughness, construction are fast, long lifespan, its excellent structural pipe wall design, compared with the tubing of other structures, cost is significantly
Reduce.And due to easy to connect, reliable, at home and abroad it is used widely.It is a large amount of to substitute pipe of concrete and cast iron pipe.
In numerous ring stiffness grades listed by national standard, SN8 (i.e. ring stiffness ≮ 8kN/m2) series pipe applications it is most wide,
In the pipeline configuration design of general geological state and landfill depth, it is generally recognized that the tubing of SN8 series can meet pipe-line system
Requirement.But actual conditions are, conventional special material for tube (such as YGH041T, DGDB2480, P600) pure material is directly produced
The pipe ring stiffness come is more in 6kN/m2Left and right, the grade of SN8 series tubing is not reached far.In production, although bellows
Ring stiffness reaches requirement, but other performances may not reach in acceptability limit, particularly adds the composition in addition to polyethylene
When, easily cause the pliability and processing characteristics of tubing.Therefore, the ring stiffness of tubing how is effectively improved, and maintains it
His performance is a urgent problem in acceptability limit.
The content of the invention
The technical problems to be solved by the invention are to provide the production method of bellows, and this method can improve bellows
While ring stiffness, other performances are maintained in qualified scope.
To achieve the above object, the present invention adopts the following technical scheme that：
The present invention provides the production method of bellows, including following preparation process：
1) take calcium carbonate, talcum powder to be well mixed with high density polyvinyl-chloride, be sent into double screw extruder and extrude, it is cold
But, it is granulated, obtains modification high-density polyethylene particle；
2) by modification high-density polyethylene particle and color masterbatch according to mass ratio it is again 100:2-5 ratio is well mixed, and is obtained
To compound；
3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, produces into
Product；
Preferably, in step 1) of the present invention, the mass ratio of calcium carbonate and talcum powder is 1:3-6.Calcium carbonate is nanometer
During structure, microscopic pattern subglobular, nano material specific surface area is big, big with substrate contact area, has well with interface
Adhesion, a large amount of impact capacities can be absorbed, there is good toughening effect, but it in calcium carbonate is nano level situation that this, which is,
Under, just have the effect that.But calcium carbonate, when being micron order, effect is really not so significantly.And in the present invention, pass through carbonic acid
Calcium is compound with talcum powder, and micron-sized calcium carbonate acts synergistically with talcum powder, it is possible to increase the ring stiffness of bellows, and can also
Ensure the pliability and processing characteristics of bellows.But both mass ratioes are necessary for 1:3-6, it is too low and too high not only can not
Ring stiffness is enough improved, can also reduce the stiffness of bellows, is also unfavorable for the ring flexibility and processing characteristics of bellows.
Preferably, in step 1) of the present invention, the addition of calcium carbonate is the 0.1- of high density polyvinyl-chloride quality
1.7%.
It is highly preferred that in step 1) of the present invention, the mass ratio of calcium carbonate and talcum powder is 1:4.In this ratio model
In enclosing, the bellows being prepared has good combination property.
It is highly preferred that in step 1) of the present invention, the addition of calcium carbonate is high density polyvinyl-chloride quality
0.9%.
Preferably, in step 2) of the present invention, described color masterbatch is black or blue color masterbatch.
Preferably, in step 2) of the present invention, modification high-density polyethylene particle is 100 according to mass ratio with color masterbatch:
3。
Preferably, in step 1) of the present invention, the particle diameter of calcium carbonate is 5-10 μm.
Preferably, in step 1) of the present invention, the particle diameter of talcum powder is 200-300 mesh.
Compared with prior art, the beneficial effects of the present invention are：
1st, in production method of the invention, compounded with micron order calcium carbonate and talcum powder, bellows can be significantly improved
Ring stiffness.
2nd, in production method of the invention, under conditions of the ring stiffness for improving bellows, additionally it is possible to ensure that other performance exists
Qualified scope, particularly pliability and processing characteristics.
Embodiment
The invention will be further described with reference to embodiments, but the invention is not limited in these embodiments.
Embodiment 1
The production method of bellows, including following preparation process：
1) take calcium carbonate, the talcum powder that particle diameter is 300 mesh that particle diameter is 5 μm to be well mixed with high density polyvinyl-chloride, send
Enter in double screw extruder and extrude, cool down, be granulated, obtain modification high-density polyethylene particle；
2) by modification high-density polyethylene particle and black color masterbatch according to mass ratio it is again 100:2 ratio is well mixed,
Obtain compound；
3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, produces into
Product.
Above-mentioned steps 1) in, the mass ratio of calcium carbonate and talcum powder is 1:6；
Above-mentioned steps 1) in, the addition of calcium carbonate is the 0.1% of high density polyvinyl-chloride quality.
Embodiment 2
The production method of bellows, including following preparation process：
1) take calcium carbonate, the talcum powder that particle diameter is 280 mesh that particle diameter is 6 μm to be well mixed with high density polyvinyl-chloride, send
Enter in double screw extruder and extrude, cool down, be granulated, obtain modification high-density polyethylene particle；
2) by modification high-density polyethylene particle and blue color masterbatch according to mass ratio it is again 100:3 ratio is well mixed,
Obtain compound；
3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, produces into
Product.
Above-mentioned steps 1) in, the mass ratio of calcium carbonate and talcum powder is 1:5；
Above-mentioned steps 1) in, the addition of calcium carbonate is the 0.5% of high density polyvinyl-chloride quality.
Embodiment 3
The production method of bellows, including following preparation process：
1) take calcium carbonate, the talcum powder that particle diameter is 250 mesh that particle diameter is 8 μm to be well mixed with high density polyvinyl-chloride, send
Enter in double screw extruder and extrude, cool down, be granulated, obtain modification high-density polyethylene particle；
2) by modification high-density polyethylene particle and black color masterbatch according to mass ratio it is again 100:3 ratio is well mixed,
Obtain compound；
3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, produces into
Product.
Above-mentioned steps 1) in, the mass ratio of calcium carbonate and talcum powder is 1:4；
Above-mentioned steps 1) in, the addition of calcium carbonate is the 0.9% of high density polyvinyl-chloride quality.
Embodiment 4
The production method of bellows, including following preparation process：
1) take calcium carbonate, the talcum powder that particle diameter is 220 mesh that particle diameter is 9 μm to be well mixed with high density polyvinyl-chloride, send
Enter in double screw extruder and extrude, cool down, be granulated, obtain modification high-density polyethylene particle；
2) by modification high-density polyethylene particle and blue color masterbatch according to mass ratio it is again 100:4 ratio is well mixed,
Obtain compound；
3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, produces into
Product.
Above-mentioned steps 1) in, the mass ratio of calcium carbonate and talcum powder is 1:4；
Above-mentioned steps 1) in, the addition of calcium carbonate is the 1.3% of high density polyvinyl-chloride quality.
Embodiment 5
The production method of bellows, including following preparation process：
1) take calcium carbonate, the talcum powder that particle diameter is 200 mesh that particle diameter is 10 μm to be well mixed with high density polyvinyl-chloride, send
Enter in double screw extruder and extrude, cool down, be granulated, obtain modification high-density polyethylene particle；
2) by modification high-density polyethylene particle and black color masterbatch according to mass ratio it is again 100:5 ratio is well mixed,
Obtain compound；
3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, produces into
Product.
Above-mentioned steps 1) in, the mass ratio of calcium carbonate and talcum powder is 1:3；
Above-mentioned steps 1) in, the addition of calcium carbonate is the 1.7% of high density polyvinyl-chloride quality.
The internal diameter that this implementation is prepared is 400mm, and wall thickness is 3.5mm bellows according to GB/T19472.1-2004
《It is buried to use polyethylene (PE) structural walls pipe-line system part 1：Polyethylene double-wall corrugated pipe material》, as a result see the table below.
1 different embodiments of table produce the ring stiffness and ring flexibility of obtained bellows
The influence more flexible to corrugated pipe ring rigidity and ring than calcium carbonate and talcum powder of the different quality of table 2
Table 3 adds influence of the different modified materials to bellows fusion time
| Group | Fusion time/s |
| Calcium carbonate and talcum powder mass ratio 1:3 | 53 |
| Calcium carbonate and talcum powder mass ratio 1:4 | 46 |
| Calcium carbonate and talcum powder mass ratio 1:5 | 56 |
| Calcium carbonate and talcum powder mass ratio 1:6 | 54 |
| Calcium carbonate and talcum powder mass ratio 1:7 | 172 |
| Calcium carbonate and talcum powder mass ratio 2:3 | 213 |
| Only addition calcium carbonate | 226 |
| Only addition talcum powder | 215 |
Claims (7)
1. the production method of bellows, it is characterised in that including following preparation process：
1) take calcium carbonate, talcum powder to be well mixed with high density polyvinyl-chloride, be sent into double screw extruder and extrude, cool down, make
Grain, obtains modification high-density polyethylene particle；
2) by modification high-density polyethylene particle and color masterbatch according to mass ratio it is again 100:2-5 ratio is well mixed, and is mixed
Close material；
3) compound for obtaining step 2) is delivered to extruder, plasticizing extrusion, compression molding, cooling and shaping, gets product；
In the step 1), the mass ratio of calcium carbonate and talcum powder is 1:3-6；
In the step 1), the addition of calcium carbonate is the 0.1-1.7% of high density polyvinyl-chloride quality.
2. the production method of bellows according to claim 1, it is characterised in that：In the step 1), calcium carbonate and cunning
The mass ratio of stone flour is 1:4.
3. the production method of bellows according to claim 1, it is characterised in that：In the step 1), calcium carbonate adds
Enter 0.9% that amount is high density polyvinyl-chloride quality.
4. the production method of bellows according to claim 1, it is characterised in that：In the step 2), described color masterbatch
For black or blue color masterbatch.
5. the production method of bellows according to claim 1, it is characterised in that：In the step 2), modification high-density
Polyethylene particle is 100 according to mass ratio with color masterbatch:3.
6. the production method of bellows according to claim 2, it is characterised in that：In the step 1), the grain of calcium carbonate
Footpath is 5-10 μm.
7. the production method of bellows according to claim 2, it is characterised in that：In the step 1), the grain of talcum powder
Footpath is 200-300 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919806.4A CN107602986A (en) | 2017-09-30 | 2017-09-30 | The production method of bellows |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919806.4A CN107602986A (en) | 2017-09-30 | 2017-09-30 | The production method of bellows |
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| Publication Number | Publication Date |
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| CN107602986A true CN107602986A (en) | 2018-01-19 |
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ID=61068608
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710919806.4A Pending CN107602986A (en) | 2017-09-30 | 2017-09-30 | The production method of bellows |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054216A (en) * | 2018-05-29 | 2018-12-21 | 广东联塑科技实业有限公司 | A kind of corrugated dual-wall hard PVC pipe and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640924A (en) * | 2004-12-10 | 2005-07-20 | 扬州群友粉体材料科技有限公司 | Technology for making high-filling modified parent particles of large-diameter high-density polytene corrugated tube |
| CN101190979A (en) * | 2006-11-27 | 2008-06-04 | 天津德昊超微新材料有限公司 | Special-purpose material for polyethylene double-wall corrugated pipe |
| CN106279921A (en) * | 2016-08-31 | 2017-01-04 | 安庆市悦发管业有限公司 | A kind of ageing-resistant PE corrugated pipe and preparation method thereof |
-
2017
- 2017-09-30 CN CN201710919806.4A patent/CN107602986A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640924A (en) * | 2004-12-10 | 2005-07-20 | 扬州群友粉体材料科技有限公司 | Technology for making high-filling modified parent particles of large-diameter high-density polytene corrugated tube |
| CN101190979A (en) * | 2006-11-27 | 2008-06-04 | 天津德昊超微新材料有限公司 | Special-purpose material for polyethylene double-wall corrugated pipe |
| CN106279921A (en) * | 2016-08-31 | 2017-01-04 | 安庆市悦发管业有限公司 | A kind of ageing-resistant PE corrugated pipe and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054216A (en) * | 2018-05-29 | 2018-12-21 | 广东联塑科技实业有限公司 | A kind of corrugated dual-wall hard PVC pipe and preparation method thereof |
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Application publication date: 20180119 |