CN104154344A - Compound EVOH-type PPR pipe and manufacturing process and manufacturing equipment thereof - Google Patents
Compound EVOH-type PPR pipe and manufacturing process and manufacturing equipment thereof Download PDFInfo
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- CN104154344A CN104154344A CN201310175571.4A CN201310175571A CN104154344A CN 104154344 A CN104154344 A CN 104154344A CN 201310175571 A CN201310175571 A CN 201310175571A CN 104154344 A CN104154344 A CN 104154344A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/06—Hoses, i.e. flexible pipes made of rubber or flexible plastics with homogeneous wall
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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
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of manufacturing of compound building materials, in particular to a PPR pipe and a manufacturing process and manufacturing equipment of the PPR pipe. The compound EVOH-type PPR pipe comprises a compound pipe body, the compound pipe body is of a three-layer structure composed of an outer layer, an inner layer and a middle layer, the outer layer and the inner layer are PPR layers, the middle layer is an oxygen barrier layer, and the oxygen barrier layer is composed of an ethylene-ethenol copolymer, a compatilizer and a compound additive. By the adoption of the technical scheme, the compound EVOH-type PPR pipe has superior anti-microbial performance, so that the service life of the pipe is prolonged, and the usability of the pipe is improved; as hot melt adhesives of a traditional process are not needed in the manufacturing process, cracking can be effectively prevented, and the defects of the low intensity, poor formability and the like are overcome; meanwhile, the production process achieves automation, one-time formation and automatic collection and arrangement, so that the yield and working efficiency are improved.
Description
Technical field
The present invention relates to compound building materials manufacturing technology field, be specifically related to a kind of PPR pipe and preparation process and making equipment.
Background technique
Along with the development of construction industry, increasing for the demand of novel tube, the demand parameter of its performance is also more and more higher, high mechanical properties, high temperature resistant poor, corrosion-resistant etc. the foundation that judges tubing quality that is all used as.Tubing is generally used for conveying liquid, in the transport process of liquid, can make inner pipe wall breed bacteria and microorganism, not only affects Water quality, also can be owing to causing using the not smooth even situation of blocking pipeline gathering for a long time of microorganism.
Traditional tubing, because technology is limit, cannot effectively suppress tube wall intussusception endophytic bacteria and microorganism mostly, and the rotten of water body can affect follow-up supply, makes user bear certain use hidden danger; Pipeline blockage more can cause and cut off the water supply, and is attached to the bacterium of inner-walls of duct and microorganism layer due to more difficult cleaning, needs to drop into larger technical force and dredges, and has indirectly increased maintenance cost.
Summary of the invention
The object of the invention is to, a kind of compound EVOH type PPR pipe and preparation process and making equipment are provided, solve above technical problem.
Technical problem solved by the invention can realize by the following technical solutions:
Compound EVOH type PPR pipe, comprises skin, internal layer and mesosphere, and described skin and internal layer are and adopt PPR(atactic copolymerized polypropene) PPR layer that material is made, it is characterized in that, described mesosphere is oxidation prevention layer;
Described oxidation prevention layer adopts and comprises that the mixture of following component makes: EVOH(ethylene-vinyl alcohol copolymer), compatibilizer and composite assistant.
The mesosphere that the present invention makes by EVOH material is set, makes product have excellent antibacterial degerming performance.EVOH, ethylene-vinyl alcohol copolymer is a kind of macromolecular material with high obstructing performance, is often used to building materials field.PPR tubing inner easily breed bacteria and microorganism in long-term use, by accumulation gradually, bacterium forms one deck mycoderm, polluted water, microorganism forms liver moss layer, also can cause tubing internal liquid mobile not smooth by the adhesion object that swims, even blocking pipeline in affect water quality.The oxygen supply that completely cuts off tubing outside by mesosphere that EVOH material makes is set, the living environment of microorganism and bacterium is destroyed, made it cannot continued growth, reach the effect of antibacterial degerming, make the use of tubing safer, also indirectly make to have obtained in working life of tubing continuity.
PPR and EVOH under normality are incompatible, need to reach by compatibilizer the combination of PPR and EVOH, and therefore the present invention is by adding the compatibilizer of PP modification to make PPR and EVOH form co-mixing system, reach the object of the combination of PPR layer and oxidation prevention layer with this.The advantage that the present invention combines PPR and EVOH material, lightweight, intensity is high, corrosion-resistant, inner non-scaling, anti-aging, has high barrier, is particularly useful for the conveying of high quality water body.In addition, this law makes the combination of mesosphere and PPR layer without the setting of heat-fusing glue layer, has saved cost of material, has saved gluing equipment, also avoids the cracking that causes due to quality and the technique of hot melt adhesive, the problem such as embrittlement and formability are poor.
Described oxidation prevention layer preferably adopts compatibilizer, the 1%-5% composite assistant of EVOH, the 55%-85% of the component of following weight percentage: 10%-40%.
The combination of one or several in described compatibilizer employing PP-g-AA, PP-g-ITA, PP-g-MAH.
The component of described PPR layer comprises: atactic copolymerized polypropene, look mother, composite assistant, its composition weight proportioning is 100:3:1.5.
Described composite assistant comprises antioxidant, ultraviolet absorber, light stabilizer and metallic ion passivation agent.
The weight proportion of each composition of described composite assistant is 6:1:2:1.
Described skin, mesosphere and internal layer are extruded and are combined into entirety by co-extrusion equipment.
The making equipment of compound EVOH type PPR pipe, comprise that an internal layer extrudes that portion, a mesosphere extrude portion, a skin is extruded portion, described skin is extruded portion and described mesosphere extruding part and is not arranged at described internal layer and extrudes two side positions of portion, it is characterized in that, also comprise a co-extruding machine head, described internal layer extrudes that portion, described mesosphere extrude portion, described outer extruding part does not connect co-extruding machine head.
The present invention independently extrudes portion by arranging three, and the generating material in the skin of compound EVOH type PPR pipe, internal layer, mesosphere is independently processed, and sends into the semi-finished product that co-extruding machine head carries out extrusion process and extrudes a fixed-caliber after mixed melting simultaneously.
The inwall of described co-extruding machine head is provided with the protective layer of a chromium plating, is difficult to cleaning after preventing from sticking to after EVOH material is because of heat of solution co-extruding machine head inwall, and affects subsequent production.
Machine barrel and screw rod that portion is extruded in described mesosphere use Oxidation Resistant Steel to make, and outer surface polishing after meticulous polishing, avoid residual EVOH material residue.
Also comprise a vacuum cooling chamber, described vacuum cooling chamber is connected at the runner in described co-extruding machine head, and described vacuum cooling chamber is for carrying out sizing and cooling forming to the semi-finished product tubing of extruding from co-extruding machine head.
Described internal layer extrudes that portion, mesosphere extrude portion, skin is extruded in portion and is respectively equipped with independently hopper and heating mixing chamber, for raw material are carried out to melting.
Also comprise an automatic-shearing device, in described automatic-shearing device, be provided with a shearing transfer passage, described shearing is connected with the outlet of described vacuum cooling chamber with transfer passage, and described automatic-shearing device is for carrying out cutting according to preseting length size from the indoor semi-finished product tubing of sending of vacuum cooling.
Described automatic-shearing device comprises a cut part being driven by motor, the motor part of described cut part connects a shearing control module, described shearing control module connects a measuring device, described measuring device is arranged at a side of described shearing transfer passage, and the described cut part of distance one setpoint distance, described setpoint distance is the cutting length of tubing, on the shearing opportunity of determining described scissors with this, user can be by regulating described setpoint distance to obtain different pipe lengths.
When the present invention works, semi-finished product tubing is transported out from vacuum cooling chamber and process shearing transfer passage, measuring device generates a trigger signal and is passed to shearing control module when semi-finished product tubing detected, shear after control module receives trigger signal and send the motor of a control signal to cut part, motor drives cut part to complete the shearing to semifinished tube material.
Described measuring device adopts a photoelectric sensor.
Also comprise an automatic packing apparatus, described automatic packing apparatus connects described shearing transfer passage, and the semi-finished product tubing that reaches preseting length after shearing is during through automatic packing apparatus, is tied can carry out piling after packing and go out fortune.
Described automatic packing apparatus comprises a packing department, a weighing unit and a packing control module, described packing department is connected respectively described packing control module with described weighing unit, and described packing control module is according to the opportunity of the weight information control packing department work of described weighing unit feedback.When use, tubing is transported on the loading platform of packing department, be arranged at after weighing unit under loading platform gets stable weight numerical value and send this numerical value to packing control module, packing control module goes out the quantity of tubing according to this weight numerical calculation, set when quantity when reaching to tie up, control packing department tubing is carried out to bundle and package.
Described packing department is a packer.
Described weighing unit is a pressure transducer.
Also comprise an automatic stacking machine, the control device of described automatic stacking machine connects described packing control module, when completing after bundle and package work, packing control module sends a settling signal to the control device of automatic stacking machine, then, the tubing after bundle and package is transplanted on piling platform by automatic stacking machine, by transfer equipment, as fork truck, lift etc. are transplanted on setting place by tubing and deposit or go out to transport.
The present invention, by automatic-shearing device, automatic packing apparatus and automatic stacking machine are set, has realized the automation that tubing is produced, and when having reduced labor cost, has improved manufacturing efficiency, is also convenient to monitoring and management simultaneously.
The preparation process of compound EVOH type PPR pipe, is characterized in that, comprises the steps:
1) raw material supply section: quantitative PPR layer component material is sent into by hopper to skin is extruded portion and internal layer is extruded portion, quantitative oxidation prevention layer component material is sent into mesosphere by hopper and extrude portion;
2) heating co-extrusion section: adjust each and extrude the operating temperature of portion, make PPR layer and oxidation prevention layer component material be able to melting, the connecting passage that material after melting is extruded portion and co-extruding machine head by each is transported in co-extruding machine head simultaneously, trilaminate material is by blend in co-extruding machine head, and last co-extruding machine head is extruded the semi-finished product tubing of compound EVOH type PPR pipe to set extruded velocity;
3) cooling forming section: described semi-finished product are transported to indoor sizing and the cooling and shaping of carrying out of vacuum cooling through the runner in co-extruding machine head;
4) collecting packing section: the semi-finished product after having shaped become the finished product that can store in a warehouse and go out fortune after shearing, packaging, piling.
The described operating temperature regulation range that each extrudes portion is 100 DEG C～260 DEG C.
The vacuum pressure settings scope of described vacuum cooling chamber is 4～6MPa.
The extruded velocity regulation range of described co-extruding machine head is 0-15 m/min.
The caliber regulation range of extruding of described co-extruding machine head is 0-20mm.
Beneficial effect: owing to adopting technique scheme, the present invention has excellent mold resistance, working life and the ease for use of tubing are improved, manufacture process is owing to not needing the hot melt adhesive of tratitional technology, can effectively prevent cracking, overcome the defects such as the low and formability of intensity is poor, and its production technology realize automation, once-through is compiled automatically, has improved output and working efficiency.
Brief description of the drawings
Fig. 1 is pipe structure schematic diagram of the present invention;
Fig. 2 is making equipment parts connection diagram of the present invention;
Fig. 3 is fabrication processing figure of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, further set forth the present invention below in conjunction with concrete diagram.
With reference to Fig. 1, compound EVOH type PPR pipe, comprise a composite pipe main body, composite pipe main body is the three-decker that skin 1, internal layer 2 and mesosphere 3 form, and skin 1 and internal layer 2 are PPR layer, mesosphere 3 is oxidation prevention layer, each composition consists of in oxidation prevention layer: EVOH(ethylene-vinyl alcohol copolymer), PP-g-MAH and composite assistant, wherein, EVOH32%, PP-g-MAH65%, composite assistant 3%.PPR layer component is: atactic copolymerized polypropene, and look mother, composite assistant, its weight proportion is 100:3:1.5.Composite assistant is by antioxidant, ultraviolet absorber, and light stabilizer and metallic ion passivation agent are according to the part by weight composition of 6:1:2:1.Skin 1, mesosphere 3 and internal layer 2 are extruded and are combined into entirety by co-extrusion equipment.
The mesosphere that the present invention makes by EVOH material is set, makes product have excellent antibacterial degerming performance.EVOH, ethylene-vinyl alcohol copolymer is a kind of macromolecular material with high obstructing performance, is often used to building materials field.PPR tubing inner easily breed bacteria and microorganism in long-term use, by accumulation gradually, bacterium forms one deck mycoderm, polluted water, microorganism forms liver moss layer, also can cause tubing internal liquid mobile not smooth by the adhesion object that swims, even blocking pipeline in affect water quality.The oxygen supply that completely cuts off tubing outside by mesosphere that EVOH material makes is set, the living environment of microorganism and bacterium is destroyed, made it cannot continued growth, reach the effect of antibacterial degerming, make the use of tubing safer, also indirectly make to have obtained in working life of tubing continuity.
PPR and EVOH under normality are incompatible, need to reach by compatibilizer the combination of PPR and EVOH, and therefore the present invention is by adding the compatibilizer of PP modification to make PPR and EVOH form co-mixing system, reach the object of the combination of PPR layer and oxidation prevention layer with this.The advantage that the present invention combines PPR and EVOH material, lightweight, intensity is high, corrosion-resistant, inner non-scaling, anti-aging, has high barrier, is particularly useful for the conveying of high quality water body.In addition, this law makes the combination of mesosphere and PPR layer without the setting of heat-fusing glue layer, has saved cost of material, has saved gluing equipment, also avoids the cracking that causes due to quality and the technique of hot melt adhesive, the problem such as embrittlement and formability are poor.
With reference to Fig. 2, the making equipment of compound EVOH type PPR pipe, comprise that an internal layer extrudes that portion 13, a mesosphere extrude portion 11, a skin is extruded portion 12, skin is extruded portion 12 and mesosphere and is extruded portion 11 and be arranged at respectively internal layer and extrude two side positions of portion 13, also comprise a co-extruding machine head 14, internal layer extrudes that portion 13, mesosphere extrude portion 11, skin is extruded portion 12 and connected respectively co-extruding machine head 14.The inwall of co-extruding machine head 14 is provided with the protective layer of a chromium plating, is difficult to cleaning after preventing from sticking to after EVOH material is because of heat of solution co-extruding machine head inwall, and affects subsequent production.Machine barrel and screw rod that portion 11 is extruded in mesosphere use Oxidation Resistant Steel to make, and outer surface polishing after meticulous polishing, avoid residual EVOH material residue.The present invention independently extrudes portion by arranging three, and the generating material in the skin of compound EVOH type PPR pipe, internal layer, mesosphere is independently processed, and sends into the semi-finished product that co-extruding machine head carries out extrusion process and extrudes a fixed-caliber after mixed melting simultaneously.Also comprise a vacuum cooling chamber 15, vacuum cooling chamber 15 is connected at the runner in co-extruding machine head 14, and sizing and cooling forming are carried out for the semi-finished product tubing to extruding from co-extruding machine head 14 in vacuum cooling chamber 15.Internal layer extrudes that portion 13, mesosphere extrude portion 11, skin is extruded in portion 12 and is respectively equipped with independently hopper and heating mixing chamber, for raw material are carried out to melting.
Also comprise an automatic-shearing device, in automatic-shearing device, be provided with a shearing transfer passage, shear and use transfer passage to be connected with the outlet of vacuum cooling chamber, automatic-shearing device is for carrying out cutting according to preseting length size from the indoor semi-finished product tubing of sending of vacuum cooling.Automatic-shearing device comprises a cut part being driven by motor, the motor part of cut part connects a shearing control module, shearing control module connects a photoelectric sensor, photoelectric sensor is arranged at a side of shearing with transfer passage, and apart from cut part one setpoint distance, setpoint distance is the cutting length of tubing, on the shearing opportunity of determining scissors with this, user can be by regulating setpoint distance to obtain different pipe lengths.When the present invention works, semi-finished product tubing is transported out from vacuum cooling chamber and process shearing transfer passage, photoelectric sensor generates a trigger signal and is passed to shearing control module when semi-finished product tubing detected, shear after control module receives trigger signal and send the motor of a control signal to cut part, motor drives cut part to complete the shearing to semifinished tube material.
Also comprise an automatic packing apparatus, automatic packing apparatus connects shearings transfer passage, when the semi-finished product tubing that reaches preseting length passes through automatic packing apparatus, is tied and can carries out piling after packing and go out to transport after shearing.Automatic packing apparatus comprises a packing department, a weighing unit and a packing control module, and packing department is connected respectively packing control module with weighing unit, and packing control module is according to the opportunity of the weight information control packing department work of weighing unit feedback.When use, tubing is transported on the loading platform of packing department, be arranged at after weighing unit under loading platform gets stable weight numerical value and send this numerical value to packing control module, packing control module goes out the quantity of tubing according to this weight numerical calculation, set when quantity when reaching to tie up, control packing department tubing is carried out to bundle and package.Packing department is a packer.Weighing unit is a pressure transducer.
Also comprise an automatic stacking machine, the control device of automatic stacking machine connects packing control module, when completing after bundle and package work, packing control module sends a settling signal to the control device of automatic stacking machine, then, the tubing after bundle and package is transplanted on piling platform by automatic stacking machine, by transfer equipment, as fork truck, lift etc. are transplanted on setting place by tubing and deposit or go out to transport.
The present invention, by automatic-shearing device, automatic packing apparatus and automatic stacking machine are set, has realized the automation that tubing is produced, and when having reduced labor cost, has improved manufacturing efficiency, is also convenient to monitoring and management simultaneously.
With reference to Fig. 3, the preparation process of compound EVOH type PPR pipe, comprises the steps:
1) raw material supply section: by a certain amount of atactic copolymerized polypropene, look mother, the PPR layer material components such as composite assistant send into by hopper after mixing according to the weight proportion of 100:3:1.5 that skin is extruded portion and internal layer is extruded portion, the oxidation prevention layer material component of the composite assistant composition of 35% EVOH, 65% PP-g-MAH and 5% is sent into mesosphere by hopper and extrude portion;
2) heating co-extrusion section: adjust each and extrude the operating temperature of portion, making skin extrude portion and internal layer, to extrude the operating temperature of portion be 190 DEG C～260 DEG C, the operating temperature that makes mesosphere extrude portion is 195 DEG C～235 DEG C, make PPR layer and oxidation prevention layer component material be able to melting, the connecting passage that material after melting is extruded portion and co-extruding machine head by each is transported in co-extruding machine head simultaneously, co-extruding machine head is after compounding, with certain extruded velocity, the semi-finished product of compound EVOH type PPR pipe are extruded, wherein, the extruded velocity of co-extruding machine head is set as 10 ms/min, extrude caliber and be set as 15mm,
3) cooling forming section: semi-finished product are transported to indoor sizing and the cooling and shaping of carrying out of vacuum cooling through the runner in co-extruding machine head, and the pressure setting of vacuum cooling chamber is 4MPa;
4) collecting packing section: the semi-finished product after having shaped become finished product after shearing, packaging, piling.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. compound EVOH type PPR pipe, comprises skin, internal layer and mesosphere, and described skin and internal layer are the PPR layer that adopts PPR material to make, and it is characterized in that, described mesosphere is oxidation prevention layer;
Described oxidation prevention layer adopts and comprises that the mixture of following component makes: EVOH, compatibilizer and composite assistant.
2. compound EVOH type PPR pipe according to claim 1, is characterized in that, described oxidation prevention layer adopts compatibilizer, the 1%-5% composite assistant of EVOH, the 55%-85% of the component of following weight percentage: 10%-40%.
3. compound EVOH type PPR pipe according to claim 2, is characterized in that, the combination of one or several in described compatibilizer employing PP-g-AA, PP-g-ITA, PP-g-MAH.
4. compound EVOH type PPR pipe according to claim 3, is characterized in that, the component of described PPR layer comprises: atactic copolymerized polypropene, look mother, composite assistant, its composition weight proportioning is 100:3:1.5.
5. compound EVOH type PPR pipe according to claim 4, is characterized in that, described composite assistant comprises antioxidant, ultraviolet absorber, light stabilizer and metallic ion passivation agent;
The weight proportion of each composition of described composite assistant is 6:1:2:1.
6. the manufacturing equipment of the compound EVOH type PPR pipe described in manufacture claim 1, comprise that an internal layer extrudes that portion, a mesosphere extrude portion, a skin is extruded portion, described skin is extruded portion and described mesosphere extruding part and is not arranged at described internal layer and extrudes two side positions of portion, it is characterized in that, also comprise a co-extruding machine head, described internal layer extrudes that portion, described mesosphere extrude portion, described outer extruding part does not connect described co-extruding machine head.
7. the manufacturing equipment of compound EVOH type PPR pipe according to claim 6, it is characterized in that, the inwall of described co-extruding machine head is provided with the protective layer of a chromium plating, is difficult to cleaning after preventing from sticking to after EVOH material is because of heat of solution co-extruding machine head inwall, and affects subsequent production;
Machine barrel and screw rod that portion is extruded in described mesosphere use Oxidation Resistant Steel to make, and outer surface polishing after meticulous polishing, avoid residual EVOH material residue;
Described internal layer extrudes that portion, described mesosphere extrude portion, described skin is extruded in portion and is respectively equipped with independently hopper and heating mixing chamber, for raw material are carried out to melting.
8. the manufacturing equipment of compound EVOH type PPR pipe according to claim 7, it is characterized in that, also comprise a vacuum cooling chamber, described vacuum cooling chamber is connected at the runner in described co-extruding machine head, and described vacuum cooling chamber is for carrying out sizing and cooling forming to the semi-finished product tubing of extruding from described co-extruding machine head.
9. the preparation process of the compound EVOH type PPR pipe described in manufacture claim 1, is characterized in that, comprises the steps:
1) raw material supply section: quantitative PPR layer component material is sent into by hopper to skin is extruded portion and internal layer is extruded portion, quantitative oxidation prevention layer component material is sent into mesosphere by hopper and extrude portion;
2) heating co-extrusion section: adjust each and extrude the operating temperature of portion, make PPR layer and oxidation prevention layer component material be able to melting, the connecting passage that material after melting is extruded portion and co-extruding machine head by each is transported in co-extruding machine head simultaneously, trilaminate material is blend in co-extruding machine head, and last co-extruding machine head is extruded the semi-finished product tubing of compound EVOH type PPR pipe to set extruded velocity;
3) cooling forming section: semi-finished product tubing is transported to indoor sizing and the cooling and shaping of carrying out of vacuum cooling through the runner in co-extruding machine head;
4) collecting packing section: the semi-finished product after having shaped become the finished product that can store in a warehouse and go out fortune after shearing, packaging, piling.
10. the preparation process of compound EVOH type PPR pipe according to claim 9, is characterized in that, the described operating temperature regulation range that each extrudes portion is 100 DEG C～260 DEG C;
The vacuum pressure settings scope of described vacuum cooling chamber is 4～6MPa;
The extruded velocity regulation range of described co-extruding machine head is 0-15 m/min;
The caliber regulation range of extruding of described co-extruding machine head is 0-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310175571.4A CN104154344A (en) | 2013-05-13 | 2013-05-13 | Compound EVOH-type PPR pipe and manufacturing process and manufacturing equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310175571.4A CN104154344A (en) | 2013-05-13 | 2013-05-13 | Compound EVOH-type PPR pipe and manufacturing process and manufacturing equipment thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104154344A true CN104154344A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310175571.4A Pending CN104154344A (en) | 2013-05-13 | 2013-05-13 | Compound EVOH-type PPR pipe and manufacturing process and manufacturing equipment thereof |
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| CN106947193A (en) * | 2017-03-24 | 2017-07-14 | 南京晶淼节能材料股份有限公司 | A kind of self-cleaning materials in the tube and preparation method thereof and its multiple tube being made |
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