CN109265864A - A kind of environment-friendly PVC tubing - Google Patents
A kind of environment-friendly PVC tubing Download PDFInfo
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- CN109265864A CN109265864A CN201811081684.7A CN201811081684A CN109265864A CN 109265864 A CN109265864 A CN 109265864A CN 201811081684 A CN201811081684 A CN 201811081684A CN 109265864 A CN109265864 A CN 109265864A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
-
- 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
Abstract
The invention discloses a kind of environment-friendly PVC tubing, which is made of following raw material: 100 parts of Corvic, 5 parts of heat stabilizer, 5 parts of toughener, 10.5 parts of anti-impact agent, 5 parts of reinforcing agent, 4 parts of oxygenation agent, 4 parts of antioxidant, 0.3 part of auxiliary agent, 0.3 part of lubricant；The reinforcing agent of surface treatment can be added in the present invention by PVC pipe, reinforcing agent and the affinity of PVC are improved, plays the role of preventing from agglomerating, reduces the melt viscosity of material, production cost is reduced simultaneously, enhances the impact strength, tensile strength and breaking strength of tubing；Gas treatment equipment is increased in preparation process simultaneously to handle the chlorine of production, optimizes entire PVC pipe preparation process.
Description
Technical field
The present invention relates to environment-friendly PVC pipe material field, specially a kind of environment-friendly PVC tubing.
Background technique
PVC is the abbreviation of (Polyvinylchlorid), and main ingredient is polyvinyl chloride, and other compositions are added to enhance it
A kind of material of heat resistance, toughness, ductility.
Pvc pipe hard polvinyl choride pipe, be with Corvic and stabilizer, lubricant etc. after squeezed with pressure sintering
Molding is the plastic pipe being developed and applied earliest, and pvc pipe resistance to corrosion is strong, be easy to be bonded, price is low, quality is hard,
But it due to having PVC monomer and additive exudation, is only applicable in water supply system of the delivery temperature no more than 45 DEG C, plastic conduit
For draining, waste water, chemicals heats liquid and coolant liquid, food, ultrarapture liquid, mud, gas, compressed air and vacuum system
The application of system.
PVC can be divided into soft pvc and hard PVC, and wherein hard PVC accounts about the 2/3 of market, and soft pvc accounts for 1/3.Soft pvc is generally used
In the surface layer of floor, ceiling and leather, but due to containing plasticizer in soft pvc, (this is also the area of soft pvc and hard PVC
Not), physical property is poor (such as upper hose needs to bear certain hydraulic pressure, and flexible PVC is just not suitable for using), so its use scope
It is limited；Hard PVC not plasticizer-containing, thus it is easily molded, and physical property is good, therefore has very big development and application values,
In pvc material production process, several auxiliary agents, such as stabilizer, plasticizer etc., if all using environmental protection certainly will be added
Auxiliary agent, that PVC pipe are also the products of non-toxic and tasteless environmental protection.
The higher cost of existing PVC pipe, and common reinforcing agent is added in preparation process and will lead to material fluidity change
Difference, impact strength, tensile strength and the breaking strength of tubing are all declined, while in the preparation process of PVC pipe, PVC
Raw material can generate a large amount of chlorine at high temperature, the production in addition to influencing PVC pipe, while chlorine has harmfulness, can be to life
Environment is produced to impact.
Summary of the invention
The purpose of the present invention is to provide a kind of environment-friendly PVC tubing, in order to overcome above-mentioned technical problem, can pass through
The reinforcing agent of surface treatment is added in PVC pipe, improves reinforcing agent and the affinity of PVC, playing prevents from agglomerating, and reduces material
The effect of melt viscosity, while production cost is reduced, enhance the impact strength, tensile strength and breaking strength of tubing；Together
When increase gas treatment equipment in preparation process the chlorine of production handled, optimize entire PVC pipe preparation work
Skill.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of environment-friendly PVC tubing, the environment-friendly PVC tubing are made of following raw material: 100 parts of Corvic,
5 parts of heat stabilizer, 5 parts of toughener, 10.5 parts of anti-impact agent, 5 parts of reinforcing agent, 4 parts of oxygenation agent, 4 parts of antioxidant, auxiliary agent 0.3
Part, 0.3 part of lubricant；
The environment-friendly PVC tubing preparation method includes the following steps:
Step 1: it hybrid technique: after Corvic is added toward the mixed machine of heat, sequentially adds heat stabilizer, toughener, resist
Electuary starts the mixed machine of heat after surface treated reinforcing agent, oxygenation agent, antioxidant, auxiliary agent, lubricant, is sufficiently stirred
125 DEG C are increased to temperature, is stirred 10 minutes, is carrying out packing spare, stirring after cooling stirs at low speed by low speed mixer
Temperature is 45 DEG C, is stirred 8 minutes；
Step 2: extrusion molding process: the tube extrusion die of corresponding specification is installed first in cross-head, true
The sizing copper sheathing and rubber seal liner plate that same size is loaded onto sky setting case, adjust the Wall thickness uniformity of extrusion die, own
Connecting screw will coat grease based on molybdenum disulfide lithium and tighten, install to connect with the mains extruder inside risen
Temperature answers constant temperature to be kept for 90-150 minutes to 190 DEG C, starts main-machine screw low-speed running, running speed 5-10r/min, then open
Dynamic charger screw rod low-speed running feed, revolving speed 5-10r/min are added booting material, it is to be extruded it is normal after to add formula former
Expect extruding pipe material, the formula material after preformed is squeezed out into pipe, main-machine screw by degassing extruder and extrusion neck ring mold and plug
Revolving speed is 25-30r/min, charger screw speed is 25-30r/min, and wherein extruder is mating is connected with gas treatment dress
It sets；
Step 3: Vacuum shaping technique: vacuum tank is pumped into very by the vacuum pump on starting Vacuum shaping water tank, vacuum pump
Sky, tubing are adsorbed on the inner wall of sizing tube set, are adjusted vacuum degree according to the outer diameter tolerance of tubing and are completed sizing, after sizing
Tubing be detached from sizing copper sheathing under the action of dragger and enter cooling water tank, by spraying cooling or impregnate cooling rear haulage and go out
Vacuum setting machine and cooling water tank are run to cutting machine direction by dragger crawler belt and are conveyed, wherein outside the sizing of outer diameter sizing
Set length takes 3 times of its internal diameter, the process conditions of Vacuum shaping are as follows: 20.0~53.3kPa of vacuum degree, 15~25 DEG C of water temperature, very
Water guarantee in empty slot nebulizes；
Step 4: traction technique: traction device provides tractive force and hauling speed to the tubing of head extrusion, wherein drawing
Power is 100-150N, hauling speed 3.5-5m/min, equably draws tubing, and adjust pipe by adjusting hauling speed
Wall thickness, thin-walled pipe pressure are 0.03~0.04MPa, and heavy wall pipe pressure is 0.05~0.06MPa, and hauling speed is faster than extruded velocity
1%~3%；
Step 5: tubing cutting: after tubing lettering, travel switch is cut according to required length adjustment, tubing is transported to
Designated position will automatic cutting, cutting while complete chamfering process.
As a further solution of the present invention: the heat stabilizer is calcium-zinc stabilizer, and the toughener is acrylate
Class anti-impact modifier, the anti-impact agent are haloflex, and the reinforcing agent is precipitated calcium carbonate, and the lubricant is paraffin
And polyethylene wax, the antioxidant are titanium dioxide, the auxiliary agent is epoxidized soybean oil.
As a further solution of the present invention: the extruder screw is divided into feeding section, fusing section and metering section, described
Feeding section and solid conveying zone are corresponding, and the fusing section and material plasticizing area are corresponding, and the fusing section and melt delivery area are corresponding,
At 120 DEG C, the temperature in the material plasticizing area is controlled at 180 DEG C the barrel temperature general control of the solid conveying zone, and is expected
Cylinder vacuum degree is 0.08~0.09MPa, and the temperature of the melt delivery area is 170 DEG C, and mouth mold connector temperature is 165 DEG C,
Die temperature is respectively 170 DEG C.
As a further solution of the present invention: the preparation process of the reinforcing agent of the surface treatment are as follows:
At room temperature, in the mixed at high speed pot of 5 liters, 2 parts of rare earth tables are added into 100 parts of stratiform precipitated calcium carbonate powders
Face modifying agent WG-2 starts stirring and heating, keeps at 80~110 DEG C high-speed stirred 10 minutes, obtains rare earth-activated stratiform silicon
Processed activation powder is dried 2 hours in convection oven at 120 DEG C when hydrochlorate and processing use and is used again.
As a further solution of the present invention: the gas treatment equipment includes decontamination cylinder, drying cylinder, spray chamber,
One check valve, the first connecting tube, the second connecting tube, second one-way valve, third connecting tube, flow divider, water pump, the 4th connecting tube,
Isocon, injector head, groove, control valve and delivery pipe, one side bottom of decontamination cylinder are equipped with the first check valve, and described
The one check valve other end is equipped with the first connecting tube, is connected with the first connecting tube at the top of the decontamination cylinder other side, and described the
The one connecting tube other end is equipped with second one-way valve, and the second one-way valve other end is mounted on one side bottom of drying cylinder, described
It is connected with third connecting tube at the top of the drying cylinder other side, the third connecting tube other end is equipped with flow divider, the flow divider
One end is mounted on spray chamber side, is equipped with water pump at the top of the spray chamber, the water pump side is equipped with the 4th connecting tube, institute
It states water pump bottom and is located at spray chamber inside top and be connected with isocon, the shunting bottom of the tube is evenly arranged with injector head, institute
It states spray chamber inside bottom and opens up fluted, the groove is connect with outside control valve, and described control valve one end is equipped with discharge
Pipe.
As a further solution of the present invention: first connecting tube one end and extruder gas vent pass through flanged joint,
The flow divider other end is connect by pipeline with chlorine collection device, and the 4th connecting tube is connect with water pipe, and the 4th connects
Filter is installed, the delivery pipe is connect with hydrochloric acid collection device on adapter tube.
As a further solution of the present invention: the third connecting tube and the 4th connecting tube middle section are separately installed with flow
Valve, the flow valve and PLC controller are electrically connected.
As a further solution of the present invention: saturated salt solution is filled with inside the decontamination cylinder, in the drying cylinder
Portion is filled with sulfuric acid.
Beneficial effects of the present invention: the present invention is designed by reasonable structure, using RE surface modifying agent to reinforcing agent
It is surface-treated, surface treated reinforcing agent improves reinforcing agent and the affinity of PVC, and playing prevents from agglomerating, and reduces
The effect of the melt viscosity of material, while production cost is reduced, the impact strength, tensile strength and fracture for enhancing tubing are strong
Degree；For extruder when being worked, polyvinyl chloride generates a large amount of chlorine at high temperature simultaneously, and gas treatment equipment passes through first
The gas vent of connecting tube and extruder is attached, and chlorine is some miscellaneous by the decontamination cylinder removal for being filled with saturated salt solution
Matter removes moisture content in the drying cylinder for being filled with the concentrated sulfuric acid by inside, and such chlorine reforms into relatively pure chlorine, then chlorine
Gas is directly collected later-stage utilization by flow divider, a part of chlorine, and another part is passed through spray chamber, the water pump at the top of spray chamber
Filtered water is sprayed by isocon and injector head, is made with the contact area of chlorine by chlorine is soluble in water by increasing
Hydrochloric acid solution, while third connecting tube and the 4th connecting tube middle section are separately installed with flow valve, by flow valve can control water and
The relative amount of chlorine, and then various concentration hydrochloric acid is made, by increasing chlorine gas processing device, it is straight effectively to avoid chlorine
The discharge connect damages environment and operator, while carrying out purification collection to chlorine, is divided into chlorine and various concentration
Hydrochloric acid can be carried out using and then saving the cost of entire technique.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is gas treatment equipment overall structure diagram of the present invention.
Fig. 2 is spray chamber schematic diagram of internal structure of the present invention.
Fig. 3 is spray chamber cross-sectional view of the present invention.
In figure: 1, decontamination cylinder；2, drying cylinder；3, spray chamber；4, the first check valve；5, the first connecting tube；6, second connects
Adapter tube；7, second one-way valve；8, third connecting tube；9, flow divider；10, water pump；11, the 4th connecting tube；12, isocon；13, it sprays
Penetrate head；14, groove；15, control valve；16, delivery pipe.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without creative efforts belongs to what the present invention protected
Range.
It please refers to shown in Fig. 1-3, a kind of environment-friendly PVC tubing, the environment-friendly PVC tubing is made of following raw material: poly-
100 parts of vinyl chloride resin, 5 parts of heat stabilizer, 5 parts of toughener, 10.5 parts of anti-impact agent, 5 parts of reinforcing agent, 4 parts of oxygenation agent, antioxygen
4 parts of agent, 0.3 part of auxiliary agent, 0.3 part of lubricant；
The environment-friendly PVC tubing preparation method includes the following steps:
Step 1: it hybrid technique: after Corvic is added toward the mixed machine of heat, sequentially adds heat stabilizer, toughener, resist
Electuary starts the mixed machine of heat after surface treated reinforcing agent, oxygenation agent, antioxidant, auxiliary agent, lubricant, is sufficiently stirred
125 DEG C are increased to temperature, is stirred 10 minutes, is carrying out packing spare, stirring after cooling stirs at low speed by low speed mixer
Temperature is 45 DEG C, is stirred 8 minutes, in order to allow auxiliary agent fully with PVC asperity contact, to reduce filler and make to the absorption of auxiliary agent
With；
Step 2: extrusion molding process: the tube extrusion die of corresponding specification is installed first in cross-head, true
The sizing copper sheathing and rubber seal liner plate that same size is loaded onto sky setting case, adjust the Wall thickness uniformity of extrusion die, own
Connecting screw will coat grease based on molybdenum disulfide lithium and tighten, install to connect with the mains extruder inside risen
Temperature answers constant temperature to be kept for 90-150 minutes to 190 DEG C, starts main-machine screw low-speed running, running speed 5-10r/min, then open
Dynamic charger screw rod low-speed running feed, revolving speed 5-10r/min are added booting material, it is to be extruded it is normal after to add formula former
Expect extruding pipe material, the formula material after preformed is squeezed out into pipe, main-machine screw by degassing extruder and extrusion neck ring mold and plug
Revolving speed is 25-30r/min, charger screw speed is 25-30r/min, and wherein extruder is mating is connected with gas treatment dress
It sets；
Step 3: vacuum tank is evacuated by the vacuum pump on starting Vacuum shaping water tank, vacuum pump, and tubing is adsorbed on fixed
On the inner wall of diameter cylinder set, vacuum degree is adjusted according to the outer diameter tolerance of tubing and completes sizing, the tubing after sizing is in dragger
Under the action of be detached from sizing copper sheathing and enter cooling water tank, by spraying cooling or impregnate cooling rear haulage and go out vacuum setting machine and cold
But water tank is run to cutting machine direction by dragger crawler belt and is conveyed, and wherein the sizing length of outer diameter sizing takes its internal diameter
3 times, the process conditions of Vacuum shaping are as follows: 20.0~53.3kPa of vacuum degree, 15~25 DEG C of water temperature, water in vacuum tank guarantees
It nebulizes, if vacuum degree is less than normal, causes pipe outside diameter less than normal, be less than standard size；Conversely, if vacuum degree is bigger than normal, caliber is bigger than normal, very
Swollen phenomenon is taken out to appearance.If water temperature is too low, sizing not exclusively, and can be such that tubing brittleness increases；If water temperature over-high, it will cause cold
Bad, cause tubing easily to deform, controls vacuum degree and water temperature and then guarantee that pipe internal-and external diameter complies with standard while not variable
Shape；
Step 4: traction technique: traction device provides tractive force and hauling speed to the tubing of head extrusion, wherein drawing
Power is 100-150N, hauling speed 3.5-5m/min, equably draws tubing, and adjust pipe by adjusting hauling speed
Wall thickness, thin-walled pipe pressure are 0.03~0.04MPa, and heavy wall pipe pressure is 0.05~0.06MPa, and hauling speed is faster than extruded velocity
1%~3%；
Step 5: tubing cutting: after tubing lettering, travel switch is cut according to required length adjustment, tubing is transported to
Designated position will automatic cutting, cutting while complete chamfering process.
Heat stabilizer is calcium-zinc stabilizer, a kind of novel nontoxic composite heat stabilizer, and toughener is anti-for esters of acrylic acid
It using the esters of acrylic acid rubber of low crosslinking degree is core polymethylacrylic acid alkyl ester as the bivalve of shell or more that impact modifying agent, which is a kind of,
Shell structurre polymer has good compatibility with PVC, has very high impact resistance under room temperature and low temperature, can make its system
The impact strength of product improves, while can also improve the cold resistance and processing fluidity of its product, and anti-impact agent is chlorinated polyethylene
Alkene is saturated high molecular material, and appearance is white powder, non-toxic and tasteless, has good weatherability, resistance to ozone, chemical-resistant resistance
And ageing-resistant performance, there is good oil resistivity, anti-flammability and tinctorial property, toughness is good, has with other high molecular materials
There is good compatibility, reinforcing agent is precipitated calcium carbonate, compared with low production cost, greatly improves the slight of tubing, lubricant is stone
Wax and polyethylene wax play the inside and outside lubricant effect of material system, and antioxidant is titanium dioxide, play and brighten and uvioresistant
Effect, auxiliary agent is epoxidized soybean oil, convenient for improve tubing plasticity.
Extruder screw is divided into feeding section, fusing section and metering section, and feeding section and solid conveying zone are corresponding, fusing section and
Material plasticizing area is corresponding, melts section and melt delivery area is corresponding, the barrel temperature general control of solid conveying zone at 120 DEG C, if
Charge temperature is too low, extends solid conveying zone, reduces the length of plasticizing zone and melt delivery area, can cause to be plasticized it is bad,
Product quality is influenced, the temperature in material plasticizing area is controlled at 180 DEG C, and barrel vacuum degree is 0.08~0.09MPa, controls the section
Vacuum degree be that an important technic index if vacuum degree is lower will affect exhaust effect, lead to there is bubble in tubing,
Seriously reduce the mechanical property of tubing.In order to make the gas inside material be easy evolution, material should be controlled in this section and be plasticized journey
Degree cannot be excessively high, while to clear up gas exhaust piping often also with antifouling, and the temperature of melt delivery area is 170 DEG C, is mentioned in the section
High screw speed reduces head resistance and improves the raising that pressure is all conducive to delivery rate, and mouth mold connector in plasticizing zone
Temperature is 165 DEG C, and die temperature is respectively 170 DEG C.
The preparation process of the reinforcing agent of surface treatment are as follows:
At room temperature, in the mixed at high speed pot of 5 liters, 2 parts of rare earth tables are added into 100 parts of stratiform precipitated calcium carbonate powders
Face modifying agent WG-2 starts stirring and heating, keeps at 80~110 DEG C high-speed stirred 10 minutes, obtains rare earth-activated stratiform silicon
Processed activation powder is dried 2 hours in convection oven at 120 DEG C when hydrochlorate and processing use and is used again.
Gas treatment equipment includes decontamination cylinder 1, drying cylinder 2, spray chamber 3, the first check valve 4, the first connecting tube 5,
Two connecting tubes 6, second one-way valve 7, third connecting tube 8, flow divider 9, water pump 10, the 4th connecting tube 11, isocon 12, injector head
13, groove 14, control valve 15 and delivery pipe 16,1 one side bottom of decontamination cylinder are equipped with the first check valve 4, and the first check valve 4 is another
One end is equipped with the first connecting tube 5, is connected with the first connecting tube 5,5 other end of the first connecting tube at the top of 1 other side of decontamination cylinder
Second one-way valve 7 is installed, 7 other end of second one-way valve is mounted on 2 one side bottom of drying cylinder, connects at the top of 2 other side of drying cylinder
It is connected to third connecting tube 8,8 other end of third connecting tube is equipped with flow divider 9, and 9 one end of flow divider is mounted on 3 side of spray chamber,
Water pump 10 is installed, 10 side of water pump is equipped with the 4th connecting tube 11,10 bottom of water pump and is located at spray chamber 3 at the top of spray chamber 3
Inside top is connected with isocon 12, and 12 bottom of isocon is evenly arranged with injector head 13, and 3 inside bottom of spray chamber offers recessed
Slot 14, groove 14 are connect with outside control valve 15, and 15 one end of control valve is equipped with delivery pipe 16.
By flanged joint, 9 other end of flow divider passes through pipeline and chlorine for first connecting tube, 5 one end and extruder gas vent
Collection device connection, the 4th connecting tube 11 are connect with water pipe, are connect convenient for device is whole with extraneous pipeline, are facilitated internal material defeated
It send, and filter is installed in the 4th connecting tube 11, remove impurities in water convenient for filter plate, guarantee that the hydrochloric acid solution in later period is pure
Degree, delivery pipe 16 are connect with hydrochloric acid collection device, convenient for collecting hydrochloric acid solution by delivery pipe 16.
Third connecting tube 8 and 11 middle section of the 4th connecting tube are separately installed with flow valve, and flow valve and PLC controller electrically connect
It connects, controls the flow of water and chlorine convenient for directly controlling flow valve by PLC controller, and then control support hydrochloric acid solution
Concentration.
It is filled with saturated salt solution inside decontamination cylinder 1, convenient for removal impurity, and chlorine does not dissolve in saturated salt solution, does
It is filled with sulfuric acid inside dry cylinder 2, the sulfuric acid of low concentration can absorb moisture and not volatile.
The working principle of this gas treatment equipment: 5 one end of the first connecting tube and extruder gas vent pass through flanged joint, chlorine
Gas enters decontamination cylinder 1 by the first connecting tube 5 and the first check valve 4 and removes impurity, then passes through the second connecting tube 6 and second
Check valve 7 enters drying cylinder 2 and removes moisture content, and then by third connecting tube 8 and flow divider 9, a part of chlorine is directly collected
Later-stage utilization, another part are passed through spray chamber 3, and water pump 10 is connect by the 4th connecting tube 11 with external water pipe, 3 top of spray chamber
Water pump 10 filtered water is sprayed by isocon 12 and injector head 13, by increasing chlorine with the contact area of chlorine
It is soluble in water that hydrochloric acid solution is made, the groove 14 of bottom is fallen into, is used by control valve 15 and the discharge of delivery pipe 16.
The present invention is designed by reasonable structure, is surface-treated using RE surface modifying agent to reinforcing agent, is passed through
The reinforcing agent of surface treatment improves reinforcing agent and the affinity of PVC, and playing prevents from agglomerating, and reduces the work of the melt viscosity of material
With, while production cost is reduced, enhance the impact strength, tensile strength and breaking strength of tubing；Simultaneously extruder into
When row work, polyvinyl chloride generates a large amount of chlorine at high temperature, and gas treatment equipment passes through the first connecting tube 5 and extruder
Gas vent is attached, and chlorine removes some impurity by being filled with the decontamination cylinder 1 of saturated salt solution, by internal filling
There is the drying cylinder 2 of the concentrated sulfuric acid to remove moisture content, such chlorine reforms into relatively pure chlorine, and then chlorine is by flow divider 9, and one
Part chlorine is directly collected later-stage utilization, and another part is passed through spray chamber 3, and the water pump 10 at 3 top of spray chamber will be filtered
Water is sprayed by isocon 12 and injector head 13, and by increasing, by chlorine, soluble in water that hydrochloric acid is made is molten with the contact area of chlorine
Liquid, while third connecting tube 8 and 11 middle section of the 4th connecting tube are separately installed with flow valve, can control water and chlorine by flow valve
Relative amount, and then various concentration hydrochloric acid is made, by increasing chlorine gas processing device, it is direct effectively to avoid chlorine
Discharge damages environment and operator, while carrying out purification collection to chlorine, is divided into the hydrochloric acid of chlorine and various concentration,
It can carry out using and then saving the cost of entire technique.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (8)
1. a kind of environment-friendly PVC tubing, which is characterized in that the environment-friendly PVC tubing is made of following raw material: polyvinyl chloride tree
100 parts of rouge, 5 parts of heat stabilizer, 5 parts of toughener, 10.5 parts of anti-impact agent, 5 parts of reinforcing agent, 4 parts of oxygenation agent, 4 parts of antioxidant,
0.3 part of auxiliary agent, 0.3 part of lubricant；
The environment-friendly PVC tubing preparation method includes the following steps:
Step 1: after Corvic is added toward the mixed machine of heat, heat stabilizer, toughener, anti-impact hybrid technique: are sequentially added
Agent starts the mixed machine of heat after surface treated reinforcing agent, oxygenation agent, antioxidant, auxiliary agent, lubricant, is stirred well to
Temperature is increased to 125 DEG C, stirs 10 minutes, is carrying out packing spare, stirring temperature after cooling stirs at low speed by low speed mixer
Degree is 45 DEG C, is stirred 8 minutes；
Step 2: extrusion molding process: installing the tube extrusion die of corresponding specification in cross-head first, fixed in vacuum
The sizing copper sheathing and rubber seal liner plate that same size is loaded onto shape case, adjust the Wall thickness uniformity of extrusion die, all companies
Grease based on molybdenum disulfide lithium will be coated and tighten by connecing screw, installed to connect with the mains and be warming up to extruder inside
190 DEG C, constant temperature is answered to be kept for 90-150 minutes, start main-machine screw low-speed running, running speed 5-10r/min restarts and adds
Material machine screw rod low-speed running feed, revolving speed 5-10r/min are added booting material, it is to be extruded it is normal after add formula material and squeeze
Formula material after preformed is squeezed out pipe, main-machine screw revolving speed by degassing extruder and extrusion neck ring mold and plug by tubing out
For 25-30r/min, charger screw speed is 25-30r/min, and wherein extruder is mating is connected with gas treatment equipment；
Step 3: Vacuum shaping technique: vacuum tank is evacuated by the vacuum pump on starting Vacuum shaping water tank, vacuum pump, manages
Material is adsorbed on the inner wall of sizing tube set, is adjusted vacuum degree according to the outer diameter tolerance of tubing and is completed sizing, the pipe after sizing
Material is detached from sizing copper sheathing under the action of dragger and enters cooling water tank, goes out vacuum by spraying cooling or the cooling rear haulage of immersion
Forming machine and cooling water tank are run to cutting machine direction by dragger crawler belt and are conveyed, and wherein the sizing housing of outer diameter sizing is long
Degree takes 3 times of its internal diameter, the process conditions of Vacuum shaping are as follows: 20.0~53.3kPa of vacuum degree, 15~25 DEG C of water temperature, and vacuum tank
In water guarantee nebulize；
Step 4: traction technique: traction device provides tractive force and hauling speed to the tubing of head extrusion, and wherein tractive force is
100-150N, hauling speed 3.5-5m/min equably draw tubing, and the wall of pipe is adjusted by adjusting hauling speed
Thickness, thin-walled pipe pressure are 0.03~0.04MPa, and heavy wall pipe pressure is 0.05~0.06MPa, and hauling speed is faster than extruded velocity
1%~3%；
Step 5: tubing cutting: after tubing lettering, travel switch is cut according to required length adjustment, tubing is transported to specified
Position will automatic cutting, cutting while complete chamfering process.
2. a kind of environment-friendly PVC tubing according to claim 1, which is characterized in that the heat stabilizer is that calcium-zinc is stablized
Agent, the toughener are that acrylic ester impact-resisting hits modifying agent, and the anti-impact agent is haloflex, and the reinforcing agent is lightweight
Calcium carbonate, the lubricant are paraffin and polyethylene wax, and the antioxidant is titanium dioxide, and the auxiliary agent is epoxidized soybean oil.
3. a kind of environment-friendly PVC tubing according to claim 1, which is characterized in that the extruder screw be divided into feeding section,
Section and metering section are melted, the feeding section and solid conveying zone are corresponding, and the fusing section and material plasticizing area are corresponding, described molten
It is corresponding to change section and melt delivery area, the barrel temperature general control of the solid conveying zone at 120 DEG C, the material plasticizing area
Temperature is controlled at 180 DEG C, and barrel vacuum degree is 0.08~0.09MPa, and the temperature of the melt delivery area is 170 DEG C, and mouth
Mould connector temperature is 165 DEG C, and die temperature is respectively 170 DEG C.
4. a kind of environment-friendly PVC tubing according to claim 1, which is characterized in that the system of the reinforcing agent of the surface treatment
Standby technique are as follows:
At room temperature, in the mixed at high speed pot of 5 liters, 2 parts of rare earth surfaces is added into 100 parts of stratiform precipitated calcium carbonate powders and change
Property agent WG-2, start stirring and heating, keep at 80~110 DEG C high-speed stirred 10 minutes, obtain rare earth-activated phyllosilicate
And processed activation powder is dried 2 hours in convection oven at 120 DEG C when processing use and is used again.
5. a kind of environment-friendly PVC tubing according to claim 1, which is characterized in that the gas treatment equipment includes impurity elimination
Matter cylinder (1), drying cylinder (2), spray chamber (3), the first check valve (4), the first connecting tube (5), the second connecting tube (6), the second list
To valve (7), third connecting tube (8), flow divider (9), water pump (10), the 4th connecting tube (11), isocon (12), injector head
(13), groove (14), control valve (15) and delivery pipe (16), (1) one side bottom of decontamination cylinder are equipped with the first check valve
(4), the first check valve (4) other end is equipped with the first connecting tube (5), connection at the top of decontamination cylinder (1) other side
Have the first connecting tube (5), the first connecting tube (5) other end is equipped with second one-way valve (7), the second one-way valve (7)
The other end is mounted on (2) one side bottom of drying cylinder, is connected with third connecting tube (8) at the top of drying cylinder (2) other side, described
Third connecting tube (8) other end is equipped with flow divider (9), and described flow divider (9) one end is mounted on spray chamber (3) side, described
It is equipped with water pump (10) at the top of spray chamber (3), water pump (10) side is equipped with the 4th connecting tube (11), the water pump (10)
Bottom and be located at spray chamber (3) inside top be connected with isocon (12), isocon (12) bottom is evenly arranged with injection
Head (13), spray chamber (3) inside bottom open up fluted (14), and the groove (14) connect with outside control valve (15),
Described control valve (15) one end is equipped with delivery pipe (16).
6. a kind of environment-friendly PVC tubing according to claim 5, which is characterized in that described first connecting tube (5) one end and squeeze
Machine gas vent is connect by pipeline with chlorine collection device by flanged joint, flow divider (9) other end out, and the described 4th
Connecting tube (11) is connect with water pipe, and filter is equipped in the 4th connecting tube (11), and the delivery pipe (16) and hydrochloric acid are collected
Device connection.
7. a kind of environment-friendly PVC tubing according to claim 5, which is characterized in that the third connecting tube (8) and the 4th connects
Adapter tube (11) middle section is separately installed with flow valve, and the flow valve and PLC controller are electrically connected.
8. a kind of environment-friendly PVC tubing according to claim 5, which is characterized in that be filled with inside the decontamination cylinder (1)
Saturated salt solution, the drying cylinder (2) is internal to be filled with sulfuric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081684.7A CN109265864A (en) | 2018-09-17 | 2018-09-17 | A kind of environment-friendly PVC tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081684.7A CN109265864A (en) | 2018-09-17 | 2018-09-17 | A kind of environment-friendly PVC tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109265864A true CN109265864A (en) | 2019-01-25 |
Family
ID=65189567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811081684.7A Pending CN109265864A (en) | 2018-09-17 | 2018-09-17 | A kind of environment-friendly PVC tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109265864A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660591A (en) * | 2020-06-10 | 2020-09-15 | 爱拉尔江苏智能环保装备有限公司 | Hollow plate preparation method and mechanism |
| CN112662092A (en) * | 2020-12-24 | 2021-04-16 | 天津京通管道科技股份有限公司 | PVC pipe production process |
| CN112812469A (en) * | 2021-01-20 | 2021-05-18 | 山东华海塑胶建材有限公司 | Anti-weathering pipeline and preparation method thereof |
| CN114294484A (en) * | 2021-12-31 | 2022-04-08 | 张家港市远创塑料机械有限公司 | Novel PVC (polyvinyl chloride) pipe and processing method thereof |
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| CN105385059A (en) * | 2015-11-04 | 2016-03-09 | 安徽瑞丰管业有限公司 | Polyvinyl chloride tubular product and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105385059A (en) * | 2015-11-04 | 2016-03-09 | 安徽瑞丰管业有限公司 | Polyvinyl chloride tubular product and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660591A (en) * | 2020-06-10 | 2020-09-15 | 爱拉尔江苏智能环保装备有限公司 | Hollow plate preparation method and mechanism |
| CN112662092A (en) * | 2020-12-24 | 2021-04-16 | 天津京通管道科技股份有限公司 | PVC pipe production process |
| CN112812469A (en) * | 2021-01-20 | 2021-05-18 | 山东华海塑胶建材有限公司 | Anti-weathering pipeline and preparation method thereof |
| CN114294484A (en) * | 2021-12-31 | 2022-04-08 | 张家港市远创塑料机械有限公司 | Novel PVC (polyvinyl chloride) pipe and processing method thereof |
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