CN107778690A - Impact pvc pipe and its production method - Google Patents
Impact pvc pipe and its production method Download PDFInfo
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- CN107778690A CN107778690A CN201610748229.2A CN201610748229A CN107778690A CN 107778690 A CN107778690 A CN 107778690A CN 201610748229 A CN201610748229 A CN 201610748229A CN 107778690 A CN107778690 A CN 107778690A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/06—Butadiene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of impact pvc pipe and its production method, it is characterised in that includes the raw material of following parts by weight：Wherein, 10 20 parts of 80 100 part, nanometer dead plaster of Corvic, 5 10 parts of impact modifier, 26 parts of compound stabilizer, 13 parts of PE waxes, 13 parts of titanium dioxide, 0.5 2 parts of silane coupler, 0.2 0.5 parts of composite antioxidant.Raw material of the present invention is simple and easy to get, and cost is cheap, has good impact resistance, pliability, low temperature resistant；Adding impact modifier and polyvinyl chloride resin has good compatibility, and good dispersion, preparation method is simple, can increase substantially the shock resistance of pvc pipe.
Description
Technical field
The invention belongs to the manufacture field of pvc pipe, more particularly to a kind of impact pvc pipe and its production method.
Background technology
Plastic pipe is the chemical building material that high-tech is combined, and chemical building material be after steel, timber, cement,
Contemporary emerging the fourth-largest class New Building Materials.Chemical building material achieves rapid progress fast development in China, especially newly
Type ring protects widely using for plastic pipe, has started the revolution that a sound substitutes traditional construction material.Plastic pipe is because with current loss
The advantages that small, energy-conservation, section material, protecting ecology, convenient completion, it is widely used in building water supply and drainage, cities and towns plumbing and combustion gas
The fields such as pipe, turn into the main force of new century urban construction pipe network.
Plastics and traditional material are different, the paces of technological progress faster, new technology, new material, the new work constantly occurred
Skill makes the advantage of the relatively conventional material of plastic tube more and more prominent.Plastic pipe compared with traditional metal tube, have it is in light weight,
The 1/6-1/10 of metal tube is typically only, there is preferable corrosion resistance, shock resistance and tensile strength, plastics pipe internal surface compares cast iron
Manage it is smooth it is more, coefficient of friction is small, fluid resistance is small, can reduce water delivery energy consumption more than 5%, synthesis energy saving is good, and manufacture energy consumption is right
75% is reduced, convenient transportation, installation is simple, and service life is up to 30-50.Plastic pipe have developed rapidly in countries in the world, hair
Absolute advantage plastic pipe is accounted for up to country in feedwater field and gas burning field application to be not only largely used for replacing traditional steel
Pipe, cast iron pipe etc., reason is that technological innovation.One side material has great progress.Another aspect application technology has new
Development, traditional piping material is set to be adapted to occasion in this way not have competitiveness at all.Also many new materials, new technology
Study, or found out to try out and examined to can affirm, the technological progress of 10 years plastic tubes from now on will promote to mould
Expects pipe more quickly develops.
PVC pipeline is the maximum plastic conduit of the market share, accounts for the share of plastic conduit nearly 70%, in recent years, China PVC
Tubing development is very fast, and annual growth rate reaches 8%, and the annual growth rate of demand 2%.In plastic pipe, PVC dosage one
Directly hold a safe lead, be widely used in water supply and sewerage pipeline.PVC Main Ingredients and Appearances are polyvinyl chloride, it is possible to additionally incorporate other compositions
Strengthen its heat resistance, toughness, ductility etc..Currently, with the development of science and technology, PVC material is also with being widely used in numerous necks
Domain, such as drainage pipeline, door-window section bar etc..It is excellent because its material is light, fire-retardant and resistance to acids and bases is good, cheap, easy for installation etc.
Matter feature, at present oneself gradual substituted metal pipeline.
Since in a planned way popularization and application chemical building material being organized from country at the beginning of the last century 80's, Rigid PVC Pipe
The development that production and application are advanced by leaps and bounds.One important use of Rigid PVC Pipe is to be used for water supply and sewerage pipeline engineering
Build.In terms of as water network construction, Rigid PVC Pipe has the advantages of service life is long, and PVC theory than PE tubing
Long-term strength (PVC >=25MPa, PE >=lOMPa) of the long-term strength also above PE.But PVC shows slightly " crisp for PE
Property ", easily injured when being hit, impact strength is relatively low, causes easily occur pipe leakage in its long-term use, seeps water, rupture, so as to
So that PVC has to use higher tubing in engineering construction, so, how to improve impact resistance, overcome " fragility " for
Being for PVC must technical problems to be solved.
The content of the invention
It is an object of the invention to provide a kind of impact pvc pipe and its production method, impact pvc pipe raw material letter
Singly be easy to get, cost is cheap, has an excellent shock resistance, and toughness is high, solve shock resistance in pvc pipe and toughness compared with
Low technical problem, improve the quality of production of PVC pipe.
What the present invention was realized in：
A kind of impact pvc pipe, it is characterised in that include the raw material of following parts by weight：Wherein, Corvic
80-100 parts, nanometer dead plaster 10-20 parts, impact modifier 5-10 parts, compound stabilizer 2-6 parts, PE wax 1-3 parts, titanium
White powder 1-3 parts, silane coupler 0.5-2 parts, composite antioxidant 0.2-0.5 parts.
The function of above raw material is respectively：
Using nanometer dead plaster as filler, cost can be greatly reduced, softening temperature and hardness is improved, carries
High tube extrusion stability and dimensional stability, reduce and shrink, also with certain sound absorption.
The impact modifier that the present invention uses has good compatibility, good dispersion, preparation method letter with polyvinyl chloride resin
It is single, the shock resistance of pvc pipe can be increased substantially.
Stabilizer is polyvinyl chloride indispensable additive in process, and there is the plasticizing for promoting PVC raw materials to make
With, while also have the effect for strengthening stability.The present invention uses compound stabilizer, has good collaboration between compound stabilizer
Effect, can reach good stablizing effect.
PE waxes have excellent cold resistance, heat resistance, chemical resistance and wearability and are widely used.PE waxes have
The very long non-polar carbon chains of very strong polar centers.Part in its structure with plastic compatible in polarity lubricates work in rising
With outer lubrication and the demoulding are played in the part incompatible with plastics in polarity.PE waxes have as in-lubricant and polymer
Good compatibility, its cohesive force between polymeric inner plays a part of reduction polymer molecule, so as to improve plastic melt
Interior frictional heat and melt mobility.PE waxes mainly improve polymer melt as the effect of external lubricant and set with processing
The friction of standby hot metal surface, it is poor with polymer compatibility, easily toward external migration out of melt, so can be melted in plastics
The interface of body and metal forms the thin layer of lubrication.
Titanium dioxide can effectively improve heat-resisting, the fast light and weatherability of pvc pipe, improve the physical and chemical performance of pvc pipe, prolong
Long life.
Silane coupler can improve dispersiveness and bonding force of the inserts in resin, improve inorganic fillings and resin it
Between compatibility, improve processing performance and improve the performance such as machinery, electricity and weatherability of pvc pipe.
Using Hinered phenols antioxidant and phosphite antioxidant as composite antioxidant, primary antioxidant and auxiliary antioxygen
Agent and used time, respective characteristic is played, it is better than a kind of effect is used alone.Because using a kind of high concentration antioxidant, can cause
Side reaction；When taking several low concentration antioxidant, can both avoid side reaction, can also play plus and benefit.
Further preferably, the preparation method of the nanometer dead plaster is：By calcium sulphate dihydrate and water according to 5-10:
90-95 ratio is made into slurry, and slurry pH is 9.5-10.2, is then placed in closed reactor and is stirred continuously, is in temperature
Reaction synthesis calcium sulfate crystal whiskers under conditions of 105-125 DEG C, then calcium sulfate crystal whiskers are produced into nanometer nothing by being dehydrated, after drying
H 2 O calcium sulphate.
Further preferably, the nanometer dead plaster is a diameter of 50-100nm dead plaster threadiness monocrystalline
Body.
Further preferably, the impact modifier includes the raw material of following parts by weight：Base methyl acrylate 70-90 parts,
Butadiene 10-20 parts, lauryl sodium sulfate 1-5 parts, potassium peroxydisulfate 0.2-0.8 parts, N, N'- methylene-bisacrylamides
0.05-0.2 parts.
Further preferably, the preparation method of the impact modifier is：Butadiene and appropriate deionized water are added into pressure
In power reactor, lauryl sodium sulfate, the 30%-50% times of persulfuric acid measured that 30%-50% times of said components are measured are added
Potassium and the 30%-50% times of N measured, N'- methylene-bisacrylamides, stirring are warming up to 70-75 DEG C, react l5-20h, are gathered
Butadiene latex；Polybutadiene latex is added in the flask with agitating device again, then adds methyl methacrylate
With appropriate deionized water, then by remaining lauryl sodium sulfate, potassium peroxydisulfate and N, N'- methylene-bisacrylamide add
In flask, be heated with stirring to 70 DEG C, react 8-10h, obtain impact-resistant modified agent emulsion, it is last it is spray-dried obtain it is impact-resistant modified
Agent.
Further preferably, it is stable to include epoxidized soybean oil, organotin, calcium stearate and barium zinc for the composition of the stabilizer
Agent；Epoxidized soybean oil, organotin, calcium stearate, the mass ratio of barium zinc stabilizer are 2-3:2:3-4:1.
Further preferably, the modifying agent is MBS.
Further preferably, the composition of the composite antioxidant includes Hinered phenols antioxidant and phosphite antioxidant,
The mass ratio of Hinered phenols antioxidant and phosphite antioxidant is 7-9:1-3.
The production method of impact pvc pipe of the present invention, comprises the following steps：
S1, raw material mixing：By Corvic, nanometer dead plaster, impact modifier, compound stabilizer, PE waxes,
After titanium dioxide, silane coupler and composite antioxidant are according to weight, nanometer dead plaster is first put into high mixer
High speed stirs, and after temperature reaches 100 DEG C to 120 DEG C, adds silane coupler and mixes 5 to 10 minutes；Again by polychlorostyrene second
It is mixed that olefine resin, impact modifier, compound stabilizer, PE waxes, titanium dioxide and composite antioxidant are put into the stirring of high mixer high speed
Close, the temperature of mixing is 120-140 DEG C, and it is stand-by that mixed material is cooled to 40-55 DEG C of rewinding by stirring 15-30min afterwards；
S2, granulation：The material mixed is sent into comminutor and is granulated, the temperature control of feed cylinder of granulator is in 175-
200 DEG C, obtain pellet；
S3, tubulation：It is put into after pellet is cooled down in barrel, the temperature for controlling barrel is 170-220 DEG C, and extrusion pressure is
35-50MPa, then material extrudes impact pvc pipe by extruder die orifice, and through bosh spraying cooling, is made into
Product.
The prominent substantive distinguishing features of the present invention and significant progress are：
Impact pvc pipe of the present invention have excellent chemical stability and to inorganic acid, alkali, salt corrosion resistance.
Filler and additive are added in production process, the anti-impact force and ageing resistance of PVC can be improved, strengthen the tough of product
Property and intensity, there is the advantages of production cost is low and production is stable；With good impact resistance, pliability, low temperature resistant；Add
Impact modifier has good compatibility with polyvinyl chloride resin, and good dispersion, preparation method is simple, can increase substantially pvc pipe
Shock resistance.
Embodiment
The present invention is made the following instructions with reference to embodiment.
Embodiment 1
S1, raw material mixing：By 10 parts of 80 part, nanometer dead plaster of Corvic, 5 parts of impact modifier, compound
0.2 part of 2 parts of stabilizer, 1 part of PE waxes, 1 part of titanium dioxide, 0.5 part of silane coupler and composite antioxidant are according to weight
Afterwards, nanometer dead plaster is first put into the stirring of high mixer high speed, after temperature reaches 100 DEG C to 120 DEG C, added silane coupled
Agent mixes 5 to 10 minutes；Again by Corvic, impact modifier, compound stabilizer, PE waxes, titanium dioxide and compound
Antioxidant is put into high mixer high speed and is stirred, and the temperature of mixing is 120-140 DEG C, will mixing after stirring 15-30min
It is stand-by that material is cooled to 40-55 DEG C of rewinding；
S2, granulation：The material mixed is sent into comminutor and is granulated, the temperature control of feed cylinder of granulator is in 175-
200 DEG C, obtain pellet；
S3, tubulation：It is put into after pellet is cooled down in barrel, the temperature for controlling barrel is 170-220 DEG C, and extrusion pressure is
35MPa, then material impact pvc pipe is extruded by extruder die orifice, and through bosh spraying cooling, finished product.
Embodiment 2
S1, raw material mixing：By 15 parts of 85 part, nanometer dead plaster of Corvic, 6 parts of impact modifier, compound
After 0.3 part of 3 parts of stabilizer, 2 parts of PE waxes, 2 parts of titanium dioxide, 1 part of silane coupler and composite antioxidant are according to weight,
Nanometer dead plaster is first put into the stirring of high mixer high speed, after temperature reaches 100 DEG C to 120 DEG C, adds silane coupler
Mix 5 to 10 minutes；Again by Corvic, impact modifier, compound stabilizer, PE waxes, titanium dioxide and compound anti-
Oxidant is put into high mixer high speed and is stirred, and the temperature of mixing is 120-140 DEG C, by mixture after stirring 15-30min
It is stand-by that material is cooled to 40-55 DEG C of rewinding；
S2, granulation：The material mixed is sent into comminutor and is granulated, the temperature control of feed cylinder of granulator is in 175-
200 DEG C, obtain pellet；
S3, tubulation：It is put into after pellet is cooled down in barrel, the temperature for controlling barrel is 170-220 DEG C, and extrusion pressure is
40MPa, then material impact pvc pipe is extruded by extruder die orifice, and through bosh spraying cooling, finished product.
Embodiment 3
S1, raw material mixing：By 18 parts of 90 part, nanometer dead plaster of Corvic, 8 parts of impact modifier, compound
0.4 part of 5 parts of stabilizer, 2.5 parts of PE waxes, 2.5 parts of titanium dioxide, 1.5 parts of silane coupler and composite antioxidant are according to parts by weight
After proportioning, nanometer dead plaster is first put into the stirring of high mixer high speed, after temperature reaches 100 DEG C to 120 DEG C, adds silane
Coupling agent mixes 5 to 10 minutes；Again by Corvic, impact modifier, compound stabilizer, PE waxes, titanium dioxide and
Composite antioxidant is put into high mixer high speed and is stirred, and the temperature of mixing is 120-140 DEG C, will after stirring 15-30min
It is stand-by that mixed material is cooled to 40-55 DEG C of rewinding；
S2, granulation：The material mixed is sent into comminutor and is granulated, the temperature control of feed cylinder of granulator is in 175-
200 DEG C, obtain pellet；
S3, tubulation：It is put into after pellet is cooled down in barrel, the temperature for controlling barrel is 170-220 DEG C, and extrusion pressure is
45MPa, then material impact pvc pipe is extruded by extruder die orifice, and through bosh spraying cooling, finished product.
Embodiment 4
S1, raw material mixing：By 20 parts of 100 part, nanometer dead plaster of Corvic, 10 parts of impact modifier, answer
0.5 part of 6 parts of stabilizer, 3 parts of PE waxes, 3 parts of titanium dioxide, 2 parts of silane coupler and composite antioxidant are closed according to weight
Afterwards, nanometer dead plaster is first put into the stirring of high mixer high speed, after temperature reaches 100 DEG C to 120 DEG C, added silane coupled
Agent mixes 5 to 10 minutes；Again by Corvic, impact modifier, compound stabilizer, PE waxes, titanium dioxide and compound
Antioxidant is put into high mixer high speed and is stirred, and the temperature of mixing is 120-140 DEG C, will mixing after stirring 15-30min
It is stand-by that material is cooled to 40-55 DEG C of rewinding；
S2, granulation：The material mixed is sent into comminutor and is granulated, the temperature control of feed cylinder of granulator is in 175-
200 DEG C, obtain pellet；
S3, tubulation：It is put into after pellet is cooled down in barrel, the temperature for controlling barrel is 170-220 DEG C, and extrusion pressure is
50MPa, then material impact pvc pipe is extruded by extruder die orifice, and through bosh spraying cooling, finished product.
Sample of embodiment of the present invention pipe after testing, show that technical indicator is：
Each parameter can be seen that the PVC as made from inventive formulation from table, and shock resistance is good, and intensity is high, real
The strength and toughness for having showed PVC is laid equal stress on.
Claims (7)
1. a kind of impact pvc pipe, it is characterised in that include the raw material of following parts by weight：Wherein, Corvic
80-100 parts, nanometer dead plaster 10-20 parts, impact modifier 5-10 parts, compound stabilizer 2-6 parts, PE wax 1-3 parts, titanium
White powder 1-3 parts, silane coupler 0.5-2 parts, composite antioxidant 0.2-0.5 parts.
2. impact pvc pipe according to claim 1, it is characterised in that：The preparation side of the nanometer dead plaster
Method is：By calcium sulphate dihydrate and water according to 5-10:90-95 ratio is made into slurry, and slurry pH is 9.5-10.2, is then placed in close
It is stirred continuously in the reactor closed, reaction synthesis calcium sulfate crystal whiskers under conditions of being 105-125 DEG C in temperature, then calcium sulfate is brilliant
A nanometer dead plaster must be produced by being dehydrated, after drying.
3. impact pvc pipe according to claim 1 or 2, it is characterised in that：The nanometer dead plaster is diameter
For 50-100nm dead plaster threadiness monocrystal.
4. impact pvc pipe according to claim 1, it is characterised in that：The impact modifier includes following weight
The raw material of number：Base methyl acrylate 70-90 parts, butadiene 10-20 parts, lauryl sodium sulfate 1-5 parts, potassium peroxydisulfate 0.2-
0.8 part, N, N'- methylene-bisacrylamide 0.05-0.2 parts.
5. impact pvc pipe according to claim 4, it is characterised in that：The preparation method of the impact modifier is：
Butadiene and appropriate deionized water are added in pressure reaction still, add the dodecane that 30%-50% times of said components are measured
Base sodium sulphate, the 30%-50% times of potassium peroxydisulfate measured and the 30%-50% times of N measured, N'- methylene-bisacrylamides, stirring rise
Temperature reacts l5-20h, obtains polybutadiene latex to 70-75 DEG C；Polybutadiene latex is added to agitating device again
In flask, methyl methacrylate and appropriate deionized water are then added, then by remaining lauryl sodium sulfate, persulfuric acid
Potassium and N, N'- methylene-bisacrylamide are added in flask, are heated with stirring to 70 DEG C, react 8-10h, obtain impact modifier breast
Liquid, it is finally spray-dried to obtain impact modifier.
6. impact pvc pipe according to claim 1, it is characterised in that：The composition of the composite antioxidant includes
The mass ratio of Hinered phenols antioxidant and phosphite antioxidant, Hinered phenols antioxidant and phosphite antioxidant is 7-9:1-
3。
7. the production method of impact pvc pipe as claimed in claim 1, it is characterised in that：Comprise the following steps：
S1, raw material mixing：By Corvic, nanometer dead plaster, impact modifier, compound stabilizer, PE waxes, titanium white
After powder, silane coupler and composite antioxidant are according to weight, first nanometer dead plaster is put into high mixer high
Speed stirring, after temperature reaches 100 DEG C to 120 DEG C, add silane coupler and mix 5 to 10 minutes；Again by polyvinyl chloride tree
Fat, impact modifier, compound stabilizer, PE waxes, titanium dioxide and composite antioxidant are put into high mixer high speed and are stirred, and mix
The temperature of conjunction is 120-140 DEG C, and it is stand-by that mixed material is cooled to 40-55 DEG C of rewinding by stirring 15-30min afterwards；
S2, granulation：The material mixed is sent into comminutor and is granulated, the temperature control of feed cylinder of granulator is in 175-200
DEG C, obtain pellet；
S3, tubulation：It is put into after pellet is cooled down in barrel, the temperature for controlling barrel is 170-220 DEG C, extrusion pressure 35-
50MPa, then material impact pvc pipe is extruded by extruder die orifice, and through bosh spraying cooling, finished product.
Priority Applications (1)
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| CN201610748229.2A CN107778690A (en) | 2016-08-29 | 2016-08-29 | Impact pvc pipe and its production method |
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| CN201610748229.2A CN107778690A (en) | 2016-08-29 | 2016-08-29 | Impact pvc pipe and its production method |
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Application publication date: 20180309 |