CN108864591A - A kind of foam polyvinyl chloride plastic tube and preparation method thereof - Google Patents
A kind of foam polyvinyl chloride plastic tube and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of foam polyvinyl chloride plastic tubes and preparation method thereof, it is made of the raw material of following weight parts：AC foaming agent 2-3, dimethylformamide 6-10, the nitric acid 60-70 of sulfuric acid 40-60,95-97% of carbon nanotube 3-4,90-93%, acryloyl chloride 1-2, Isosorbide-5-Nitrae-dioxane 0.01-0.02, azodiisobutyronitrile 0.2-0.3, hydroxy-ethyl acrylate 6-10, triethylamine 7-8, liquid ethylene-propylene-diene rubber 10-14, cumyl peroxide 1-1.2, polyvinyl chloride 100-120, adipic acid propanediol polyester 2-4, beta-hydroxy alkylamide 0.1-0.3, celestite powder 10-14, chlorinated paraffin 4-6, aluminium dihydrogen phosphate 1-2.Plastic pipe of the invention is foamed using AC foaming agent, can effectively be improved the thermal and insulating performance of finished product, be can be widely applied to fuel gas transportation pipeline etc..
Description
Technical field
The present invention relates to tubing technical fields more particularly to a kind of foam polyvinyl chloride plastic tube and preparation method thereof.
Background technique
Carbon nanotube has very strong axial strength, toughness and elasticity modulus, obtains by theoretical calculation:Carbon nanotube
Young's modulus can achieve 5TPa, an order of magnitude higher than general fibre；Its Theoretical Tensile Strength is 50-20OGPa, is steel
100 times, but density only has 1/6th of steel, in addition, the hollow cage structure of carbon nanotube is being made strongly by external force
Certain volume deformation can occur for the used time, and then show as out good flexibility, it can be regarded as very excellent
Fiber " and the tensile strain that carbon nanotube is born, brittle fracture, plastic deformation fracture or key fracture will not be presented, therefore,
The structure of carbon nanotube is much more secured than common high molecular materials, currently, using carbon nanotube as filler and other engineering materials
Material carries out the compound composite material prepared, and shows surprising intensity, elasticity, toughness and fatigue resistance etc., this is just carbon
Nanotube provides the wider scope of application；
Due to the huge specific surface area of carbon nanotube and surface energy, so that carbon nanotube is very easy to reunite, this is virtually
It will limit its dispersion in various matrixes, effectively improve the dispersion of carbon nanotube in the base, allow to more effectively
Ground transmits load, has become carbon nanotube using institute's urgent problem, therefore, the surface modification of carbon nanotube seems outstanding
It is important；
And since carbon nanotube can be improved mechanical property, electrical property and other performances of composite material, so carbon is received
Mitron/rubber composite material causes more and more to pay close attention to, and in order to realize the purpose of enhancing, needs to solve there are two problem:One
It is a be carbon nanotube the dispersion, the other is carbon nanotube and matrix interface problem, since carbon nano tube surface compares
Inertia, and specific surface area is bigger easily causes reunion, so the effect of carbon nanotubes reinforced polymer is not it is obvious that being based on
This reason, many people start to carry out physical or chemical treatment to carbon nanotube, and in these methods, acid processing generates oxygen-containing
The method of group is that one kind is common and efficient, because it can provide effective reflecting point, thus with matrix resin realizationization
Learn key connection, still, in most cases, the group that this method generates is often seldom, can not provide enough connections with
Matrix bonding；
Carbon nanotube is since it possesses every excellent performance, in recent years always by the concern of various countries researcher,
Especially carbon nanotube composite materials are since it can have the functions or enhancing that more original carbon nanotubes do not have
Carbon nanotube has but weaker function, and the present invention is just to provide a kind of functionalization enhancing carbon nanotube, and by its composite material
It is applied in life production field on common tubing, achievees the effect that improve pipe performance with this.
Summary of the invention
The object of the invention is to remedy the disadvantages of known techniques, provides a kind of foam polyvinyl chloride plastic tube and its system
Preparation Method.
The present invention is achieved by the following technical solutions：
A kind of foam polyvinyl chloride plastic tube, it is made of the raw material of following weight parts：
AC foaming agent 2-3, dimethylformamide 6-10, carbon nanotube 3-4,90-93% sulfuric acid 40-60,95-97%
Nitric acid 60-70, acryloyl chloride 1-2, Isosorbide-5-Nitrae-dioxane 0.01-0.02, azodiisobutyronitrile 0.2-0.3, hydroxy-ethyl acrylate
6-10, triethylamine 7-8, liquid ethylene-propylene-diene rubber 10-14, cumyl peroxide 1-1.2, polyvinyl chloride 100-120, oneself two
Acid propylene glycol polyester 2-4, beta-hydroxy alkylamide 0.1-0.3, celestite powder 10-14, chlorinated paraffin 4-6, aluminium dihydrogen phosphate 1-2.
A kind of preparation method of the foam polyvinyl chloride plastic tube, includes the following steps：
(1) above-mentioned celestite powder is calcined 1-2 hours at 700-800 DEG C, is cooled to room temperature, with above-mentioned aluminium dihydrogen phosphate
Mixing, is added in the deionized water of 2-5 times of mixture weight, and increasing temperature is 80-90 DEG C, and insulated and stirred is dry to water, must change
Property mountain flour；
(2) above-mentioned modified mountain flour is mixed with carbon nanotube, is added to the sulfuric acid of above-mentioned 90-93%, the nitric acid of 95-97%
Mixed solution in, be stirred by ultrasonic 20-24 hour, keep the temperature 50-60 minutes at 136-140 DEG C, suction filtration, washing 3-4 times,
It is 20-30 minutes dry at 70-80 DEG C, obtain acidification carbon nanotube；
(3) above-mentioned azodiisobutyronitrile is added in the dehydrated alcohol of 20-30 times of its weight, is stirred evenly, and it is above-mentioned
Acryloyl chloride, Isosorbide-5-Nitrae-dioxane mixing, magnetic agitation 2-3 minutes, increasing temperature was 60-65 DEG C, was protected under the protection of nitrogen
Temperature reaction 47-50 hours, obtains grafting auxiliary agent；
(4) above-mentioned acidification carbon nanotube is added in the dehydrated alcohol of 100-130 times of its weight, magnetic agitation 2-3 points
Above-mentioned grafting auxiliary agent is added in clock, and increasing temperature is 80-85 DEG C, is stirred to react under nitrogen protection 40-50 hours, is centrifuged, will consolidate
Shape object is successively washed 2-3 times with tetrahydrofuran, dehydrated alcohol, deionized water, and air drying obtains grafted modified carbon nano tube；
(5) above-mentioned chlorinated paraffin is added in the deionized water of 3-5 times of its weight, the insulated and stirred 10- at 80-86 DEG C
14 minutes, beta-hydroxy alkylamide is added, stirs to room temperature, obtains alcoholic solution；
(6) above-mentioned grafted modified carbon nano tube is added in the dehydrated alcohol of 100-120 times of its weight, above-mentioned alcohol is added
Solution, hydroxy-ethyl acrylate, triethylamine, increasing temperature is 60-65 DEG C, insulated and stirred 20-30 hours under the protection of nitrogen, from
The heart successively washs solid content 3-4 times with tetrahydrofuran, deionized water, and air drying obtains ethylene base carbon nanotube；
(7) above-mentioned ethylene base carbon nanotube is added in the tetrahydrofuran of 30-47 times of its weight, aforesaid liquid three is added
First EP rubbers, cumyl peroxide are stirred at room temperature 10-13 hours, are sent into vacuum drying oven, do at 76-80 DEG C
It is 1-2 hours dry, it is placed at normal temperature 2-3 days after discharging, filters, filter cake is dried in vacuo 20-30 minutes at 90-100 DEG C, is obtained
Modified composite material；
(8) above-mentioned AC foaming agent is added in dimethylformamide, stirs evenly, obtains foaming agent solution；
(9) above-mentioned modified composite material is mixed with each raw material other than foaming agent solution, is granulated using twin-screw,
Prilling temperature is 120-150 DEG C, and pellet is mixed with above-mentioned foaming agent solution, is sent into double screw extruder, and extruding pipe material squeezes out
Machine temperature is 170-190 DEG C, and tubing is pipe finished through cooling, cutting, expanding, packaging.
The double-screw extruder screw revolving speed is 80-300 revs/min.
It is divided into 4 regions, temperature ± 10 DEG C of each temperature region inside the extruder.
The extruder inner wall smears lubricant, and lubricant is made of the raw material of following weight parts, metal-base lubricating rouge
For 9-12, graphite 17-25, molybdenum disulfide 4-7, kaolin 20-25, yttrium oxide 2-3, aluminium dihydrogen phosphate 10-15, copper oxide
5-10。
The method for preparing lubricant is, after raw material is mixed, is quickly heated to 300 DEG C within 3-5 minutes, passes through
Tool is applied to extruder inner wall.
It is an advantage of the invention that：
The molecular weight of traditional Liquid Ethylene Propylene Methylene presoma is lower, cause the mechanical property of the EP rubbers after solidifying compared with
It is low, the present invention first by the strand containing vinyl-functional by covalence graft to carbon nano tube surface, then with ternary second
The vinyl of third rubber mix, vinyl carbon nano tube surface takes part in the solidification of ethylene propylene diene rubber so that carbon nanotube with
It is connected with each other between the strand of ethylene propylene diene rubber, so as to cause the raising of gel content and mechanical property, will finally consolidate
Change the composite material after stablizing to be added in polyvinyl chloride substrate, achievees the purpose that enhancing by extrusion molding；
The present invention has synthesized the grafting auxiliary agent with acid chloride groups first, then its with acidification carbon nanotube react when
Time has consumed a part of acid chloride groups, but most of group is left behind, they can be anti-with hydroxy-ethyl acrylate
It answers, to obtain many vinyl on the surface of carbon nanotube indirectly；
Pvc tube of the invention has higher mechanical strength：The present invention joined in PVC base system
The preferable Liquid Ethylene Propylene Methylene of dispersibility, and Liquid Ethylene Propylene Methylene is effectively tied by double bond with the carbon nanotube after modification
It closes, thus loading stress can be passed to carbon nanotube by chemical bond by matrix, to improve its mechanical strength；The present invention
Plastic pipe foamed using AC foaming agent, can effectively improve the thermal and insulating performance of finished product, can be widely applied to
Fuel gas transportation pipeline etc..
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
Specific embodiment 1：A kind of foam polyvinyl chloride plastic tube, it is made of the raw material of following weight parts：
AC foaming agent 2, dimethylformamide 6, carbon nanotube 3,90% sulfuric acid 40,95% nitric acid 60, acryloyl chloride
1, Isosorbide-5-Nitrae dioxane 0.01, azodiisobutyronitrile 0.2, hydroxy-ethyl acrylate 6, triethylamine 7, liquid ethylene-propylene-diene rubber 10, mistake
Aoxidize diisopropylbenzene (DIPB) 1, polyvinyl chloride 100, adipic acid propanediol polyester 2, β hydroxyalkyl amide 0.1, celestite powder 10, chlorination stone
Wax 4, aluminium dihydrogen phosphate 1.
A kind of preparation method of the foam polyvinyl chloride plastic tube, includes the following steps：
(1) above-mentioned celestite powder is calcined 1 hour at 700 DEG C, is cooled to room temperature, mixed with above-mentioned aluminium dihydrogen phosphate,
It is added in 2 times of mixture weight of deionized water, increasing temperature is 80 DEG C, and insulated and stirred is dry to water, obtains modified mountain flour；
(2) above-mentioned modified mountain flour is mixed with carbon nanotube, is added to the mixing of above-mentioned 90% sulfuric acid, 95% nitric acid
It in solution, is stirred by ultrasonic 20 hours, keeps the temperature 50 minutes at 136 DEG C, filter, wash 3 times, it is 20 minutes dry at 70 DEG C, it obtains
It is acidified carbon nanotube；
(3) above-mentioned azodiisobutyronitrile is added in the dehydrated alcohol of 20 times of its weight, is stirred evenly, with above-mentioned propylene
Acyl chlorides, the mixing of Isosorbide-5-Nitrae dioxane, magnetic agitation 2 minutes, increasing temperature was 60 DEG C, and insulation reaction 47 is small under the protection of nitrogen
When, obtain grafting auxiliary agent；
(4) above-mentioned acidification carbon nanotube is added in the dehydrated alcohol of 100 times of its weight, magnetic agitation 2 minutes, is added
Above-mentioned grafting auxiliary agent, increasing temperature is 80 DEG C, is stirred to react under nitrogen protection 40 hours, is centrifuged, solid content is successively used four
Hydrogen furans, dehydrated alcohol, deionized water are washed 2 times, and air drying obtains grafted modified carbon nano tube；
(5) above-mentioned chlorinated paraffin is added in the deionized water of 3 times of its weight, insulated and stirred 10 minutes at 80 DEG C,
β hydroxyalkyl amide is added, stirs to room temperature, obtains alcoholic solution；
(6) above-mentioned grafted modified carbon nano tube is added in the dehydrated alcohol of 100 times of its weight, it is molten that above-mentioned alcohol is added
Liquid, hydroxy-ethyl acrylate, triethylamine, increasing temperature is 60 DEG C, insulated and stirred 20 hours under the protection of nitrogen, and centrifugation will consolidate
Shape object is successively washed 3 times with tetrahydrofuran, deionized water, and air drying obtains ethylene base carbon nanotube；
(7) above-mentioned ethylene base carbon nanotube is added in the tetrahydrofuran of 30 times of its weight, aforesaid liquid ternary is added
EP rubbers, cumyl peroxide are stirred at room temperature 10 hours, are sent into vacuum drying oven, 2 hours dry at 80 DEG C,
It is cooling after discharging, it filters, filter cake is dried in vacuo 20-30 minutes at 90-100 DEG C, discharging cooling obtains modified composite material；
(8) above-mentioned AC foaming agent is added in dimethylformamide, stirs evenly, obtains foaming agent solution；
(9) above-mentioned modified composite material is mixed with each raw material other than foaming agent solution, is granulated using twin-screw,
Prilling temperature is 120 DEG C, and pellet is mixed with above-mentioned foaming agent solution, is sent into double screw extruder, extruding pipe material, extruder temperature
Degree is 170 DEG C, and tubing is pipe finished through cooling, cutting, expanding, packaging.
The double-screw extruder screw revolving speed is 80-300 revs/min.
It is divided into 4 regions, temperature ± 10 DEG C of each temperature region inside the extruder.
The extruder inner wall smears lubricant, and lubricant is made of the raw material of following weight parts, metal-base lubricating rouge
It is 9, graphite 17, molybdenum disulfide 4, kaolin 20, yttrium oxide 2, aluminium dihydrogen phosphate 10, copper oxide 5.
The method for preparing lubricant is, after raw material is mixed, is quickly heated to 300 DEG C within 3-5 minutes, passes through
Tool is applied to extruder inner wall.
Performance test：
Vicat softening temperature：86.9℃；
Dichloromethane impregnating experiment (15 DEG C)：Surfaces externally and internally variation is 0N；
Longitudinal welds (150 DEG C, 1h)：3.1%；
Tensile yield strength：47MPa；
Drop impact tests (0 DEG C)：TIR≤10%.
Specific embodiment 2：A kind of foam polyvinyl chloride plastic tube, it is made of the raw material of following weight parts：
AC foaming agent 3, dimethylformamide 10, carbon nanotube 4, the sulfuric acid 60 of 90-93%, 95-97% nitric acid 70, third
Alkene acyl chlorides 2, Isosorbide-5-Nitrae-dioxane 0.02, azodiisobutyronitrile 0.3, hydroxy-ethyl acrylate 10, triethylamine 8, liquid epdm
Rubber 14, cumyl peroxide 1.2, polyvinyl chloride 120, adipic acid propanediol polyester 4, beta-hydroxy alkylamide 0.3, celestine
Powder 14, chlorinated paraffin 6, aluminium dihydrogen phosphate 2.
A kind of preparation method of the foam polyvinyl chloride plastic tube, includes the following steps：
(1) above-mentioned celestite powder is calcined 1 hour at 700 DEG C, is cooled to room temperature, mixed with above-mentioned aluminium dihydrogen phosphate,
It is added in 2 times of mixture weight of deionized water, increasing temperature is 80 DEG C, and insulated and stirred is dry to water, obtains modified mountain flour；
(2) above-mentioned modified mountain flour is mixed with carbon nanotube, is added to the mixing of above-mentioned 90% sulfuric acid, 95% nitric acid
It in solution, is stirred by ultrasonic 20 hours, keeps the temperature 50 minutes at 136 DEG C, filter, wash 3 times, it is 20 minutes dry at 70 DEG C, it obtains
It is acidified carbon nanotube；
(3) above-mentioned azodiisobutyronitrile is added in the dehydrated alcohol of 20 times of its weight, is stirred evenly, with above-mentioned propylene
Acyl chlorides, the mixing of Isosorbide-5-Nitrae dioxane, magnetic agitation 2 minutes, increasing temperature was 60 DEG C, and insulation reaction 47 is small under the protection of nitrogen
When, obtain grafting auxiliary agent；
(4) above-mentioned acidification carbon nanotube is added in the dehydrated alcohol of 100 times of its weight, magnetic agitation 2 minutes, is added
Above-mentioned grafting auxiliary agent, increasing temperature is 80 DEG C, is stirred to react under nitrogen protection 40 hours, is centrifuged, solid content is successively used four
Hydrogen furans, dehydrated alcohol, deionized water are washed 2 times, and air drying obtains grafted modified carbon nano tube；
(5) above-mentioned chlorinated paraffin is added in the deionized water of 3 times of its weight, insulated and stirred 10 minutes at 80 DEG C,
β hydroxyalkyl amide is added, stirs to room temperature, obtains alcoholic solution；
(6) above-mentioned grafted modified carbon nano tube is added in the dehydrated alcohol of 100 times of its weight, it is molten that above-mentioned alcohol is added
Liquid, hydroxy-ethyl acrylate, triethylamine, increasing temperature is 60 DEG C, insulated and stirred 20 hours under the protection of nitrogen, and centrifugation will consolidate
Shape object is successively washed 3 times with tetrahydrofuran, deionized water, and air drying obtains ethylene base carbon nanotube；
(7) above-mentioned ethylene base carbon nanotube is added in the tetrahydrofuran of 30 times of its weight, aforesaid liquid ternary is added
EP rubbers, cumyl peroxide are stirred at room temperature 10 hours, are sent into vacuum drying oven, 2 hours dry at 80 DEG C,
It is cooling after discharging, it filters, filter cake is dried in vacuo 20-30 minutes at 90-100 DEG C, discharging cooling obtains modified composite material；
(8) above-mentioned AC foaming agent is added in dimethylformamide, stirs evenly, obtains foaming agent solution；
(9) above-mentioned modified composite material is mixed with each raw material other than foaming agent solution, is granulated using twin-screw,
Prilling temperature is 120 DEG C, and pellet is mixed with above-mentioned foaming agent solution, is sent into double screw extruder, extruding pipe material, extruder temperature
Degree is 170 DEG C, and tubing is pipe finished through cooling, cutting, expanding, packaging.
The double-screw extruder screw revolving speed is 80-300 revs/min.
It is divided into 4 regions, temperature ± 10 DEG C of each temperature region inside the extruder.
The extruder inner wall smears lubricant, and lubricant is made of the raw material of following weight parts, metal-base lubricating rouge
It is 12, graphite 25, molybdenum disulfide 7, kaolin 25, yttrium oxide 3, aluminium dihydrogen phosphate 15, copper oxide 10.
The method for preparing lubricant is, after raw material is mixed, is quickly heated to 300 DEG C within 3-5 minutes, passes through
Tool is applied to extruder inner wall.
Performance test：
Vicat softening temperature：88.0℃；
Dichloromethane impregnating experiment (15 DEG C)：Surfaces externally and internally variation is 0N；
Longitudinal welds (150 DEG C, 1h)：3.5%；
Tensile yield strength：46MPa；
Drop impact tests (0 DEG C)：TIR≤10%.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of foam polyvinyl chloride plastic tube, which is characterized in that it is made of the raw material of following weight parts：
AC foaming agent 2-3, dimethylformamide 6-10, carbon nanotube 3-4,90-93% sulfuric acid 40-60,95-97% nitric acid
60-70, acryloyl chloride 1-2, Isosorbide-5-Nitrae-dioxane 0.01-0.02, azodiisobutyronitrile 0.2-0.3, hydroxy-ethyl acrylate 6-10,
Triethylamine 7-8, liquid ethylene-propylene-diene rubber 10-14, cumyl peroxide 1-1.2, polyvinyl chloride 100-120, adipic acid third
Diol polyester 2-4, beta-hydroxy alkylamide 0.1-0.3, celestite powder 10-14, chlorinated paraffin 4-6, aluminium dihydrogen phosphate 1-2.
2. a kind of foam polyvinyl chloride plastic tube according to claim 1, which is characterized in that the polyvinyl chloride hair
The preparation method of foamed expects pipe, includes the following steps：
(1) above-mentioned celestite powder is calcined 1-2 hours at 700-800 DEG C, is cooled to room temperature, it is mixed with above-mentioned aluminium dihydrogen phosphate
It closes, is added in the deionized water of 2-5 times of mixture weight, increasing temperature is 80-90 DEG C, and insulated and stirred is dry to water, obtains modification
Mountain flour；
(2) above-mentioned modified mountain flour is mixed with carbon nanotube, be added to the sulfuric acid of above-mentioned 90-93%, the nitric acid of 95-97% it is mixed
It closes in solution, is stirred by ultrasonic 20-24 hours, keeps the temperature 50-60 minutes at 136-140 DEG C, filter, wash 3-4 times, in 70-80
It is 20-30 minutes dry at DEG C, obtain acidification carbon nanotube；
(3) above-mentioned azodiisobutyronitrile is added in the dehydrated alcohol of 20-30 times of its weight, is stirred evenly, with above-mentioned propylene
Acyl chlorides, Isosorbide-5-Nitrae-dioxane mixing, magnetic agitation 2-3 minutes, increasing temperature was 60-65 DEG C, was kept the temperature under the protection of nitrogen anti-
It answers 47-50 hours, obtains grafting auxiliary agent；
(4) above-mentioned acidification carbon nanotube is added in the dehydrated alcohol of 100-130 times of its weight, magnetic agitation 2-3 minutes, is added
Enter above-mentioned grafting auxiliary agent, increasing temperature is 80-85 DEG C, is stirred to react under nitrogen protection 40-50 hours, is centrifuged, by solid content
It is successively washed 2-3 times with tetrahydrofuran, dehydrated alcohol, deionized water, air drying obtains grafted modified carbon nano tube；
(5) above-mentioned chlorinated paraffin is added in the deionized water of 3-5 times of its weight, insulated and stirred 10-14 points at 80-86 DEG C
Beta-hydroxy alkylamide is added in clock, stirs to room temperature, obtains alcoholic solution；
(6) above-mentioned grafted modified carbon nano tube is added in the dehydrated alcohol of 100-120 times of its weight, it is molten that above-mentioned alcohol is added
Liquid, hydroxy-ethyl acrylate, triethylamine, increasing temperature is 60-65 DEG C, insulated and stirred 20-30 hours under the protection of nitrogen, from
The heart successively washs solid content 3-4 times with tetrahydrofuran, deionized water, and air drying obtains ethylene base carbon nanotube；
(7) above-mentioned ethylene base carbon nanotube is added in the tetrahydrofuran of 30-47 times of its weight, aforesaid liquid ternary second is added
Third rubber, cumyl peroxide are stirred at room temperature 10-13 hours, are sent into vacuum drying oven, the dry 1-2 at 76-80 DEG C
Hour, it is placed at normal temperature 2-3 days after discharging, it filters, filter cake is dried in vacuo 20-30 minutes at 90-100 DEG C, obtains modification
Composite material；
(8) above-mentioned AC foaming agent is added in dimethylformamide, stirs evenly, obtains foaming agent solution；
(9) above-mentioned modified composite material is mixed with each raw material other than foaming agent solution, is granulated using twin-screw, is granulated
Temperature is 120-150 DEG C, and pellet is mixed with above-mentioned foaming agent solution, is sent into double screw extruder, extruding pipe material, extruder temperature
Degree is 170-190 DEG C, and tubing is pipe finished through cooling, cutting, expanding, packaging.
3. a kind of foam polyvinyl chloride plastic tube according to claim 2, which is characterized in that the twin-screw extrusion
Machine screw speed is 80-300 revs/min.
4. a kind of foam polyvinyl chloride plastic tube according to claim 2, which is characterized in that inside the extruder
It is divided into 4 regions, temperature ± 10 DEG C of each temperature region.
5. a kind of foam polyvinyl chloride plastic tube according to claim 2, which is characterized in that the extruder inner wall applies
Lubricant is smeared, lubricant is made of the raw material of following weight parts, and metal-base lubricating rouge is 9-12, graphite 17-25, curing
Molybdenum is 4-7, kaolin 20-25, yttrium oxide 2-3, aluminium dihydrogen phosphate 10-15, copper oxide 5-10.
6. a kind of foam polyvinyl chloride plastic tube according to claim 5, which is characterized in that the lubricant preparation side
Method is, after raw material is mixed, is quickly heated to 300 DEG C within 3-5 minutes, is applied to extruder inner wall by tool.
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| CN105860343A (en) * | 2016-04-26 | 2016-08-17 | 安徽玉发塑业有限公司 | Polyvinyl chloride plastic pipe and preparation method thereof |
| CN105860342A (en) * | 2016-04-26 | 2016-08-17 | 安徽玉发塑业有限公司 | Low-cost polyvinyl chloride plastic pipe and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105860343A (en) * | 2016-04-26 | 2016-08-17 | 安徽玉发塑业有限公司 | Polyvinyl chloride plastic pipe and preparation method thereof |
| CN105860342A (en) * | 2016-04-26 | 2016-08-17 | 安徽玉发塑业有限公司 | Low-cost polyvinyl chloride plastic pipe and preparation method thereof |
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