CN105131417B - A kind of crosslinked polyethylene and its production technology - Google Patents
A kind of crosslinked polyethylene and its production technology Download PDFInfo
- Publication number
- CN105131417B CN105131417B CN201510621222.XA CN201510621222A CN105131417B CN 105131417 B CN105131417 B CN 105131417B CN 201510621222 A CN201510621222 A CN 201510621222A CN 105131417 B CN105131417 B CN 105131417B
- Authority
- CN
- China
- Prior art keywords
- pot
- parts
- crosslinked polyethylene
- ldpe
- blower fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- 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
-
- 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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/08—Crosslinking by silane
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Graft Or Block Polymers (AREA)
Abstract
The invention discloses a kind of crosslinked polyethylene, it is related to high-molecular compound production technical field, its component includes LLDPE, low density polyethylene (LDPE), catalyst, antioxidant, silane crosslinker, initiator and lubricant, and the production craft step of the crosslinked polyethylene includes：By low density polyethylene (LDPE), dibutyl tin laurate class compound and the previously prepared catalyst master batch of antioxidant, catalyst master batch is subjected to drying and processing together with LLDPE and low density polyethylene (LDPE) again, then it is transferred to together with silane crosslinker, initiator and lubricant in dynamic response machine and is vacuumized, heated and stirred, make its reaction abundant, finally enter and room temperature is naturally cooled in static reaction machine, detect qualified rear pack.The present invention has the advantages that technique is simple, with low cost, environment friendly and pollution-free, meets the requirement carried out production strictly in line with rules and regulations, and the crosslinked polyethylene performance of production is stable, and production cost is low, it is adaptable to mass produce.
Description
Technical field
The present invention relates to high-molecular compound production technical field, more particularly to a kind of crosslinked polyethylene and its production work
Skill.
Background technology
Crosslinked polyethylene is, by covalent bond one netted three-dimensional structure of formation between polyethylene molecule, can to change rapidly
The performance of polyethylene, makes it have excellent heat resistance and insulating properties, improves mechanical property and chemical-resistant characteristic.China
Just organosilane crosslinked polyethylene is studied from last century early eighties and some achievements are achieved, but because of domestic various factors
Influence, develop it is very slow always.As technology constantly updates and developed, silane grafting and crosslinking polyethylene technology is also obtained very
Big progress, and application is also achieved in every respect, especially in terms of electric wire, after polyethylene crosslinking, not only make resistance to
It is hot to improve, and have suitable improvement in tensile strength, high temperature conservation rate and resisting environmental stress and cracking.But at present
There is the problem of complex operation, condition are difficult to control in the production technology of many manufacturers, and then influence properties of product.
The content of the invention
The technical problems to be solved by the invention are to provide the crosslinking that a kind of performance is stable, technique is simple, with low cost and gathered
Ethene, and the production technology of the crosslinked polyethylene is produced, environment friendly and pollution-free, production cost is low, it is adaptable to mass produce.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of crosslinked polyethylene, including LLDPE, low density polyethylene (LDPE), catalyst, antioxidant, crosslinkable silane
Join agent, initiator and lubricant, the catalyst is dibutyl tin laurate class compound, and silane crosslinker is vinyl front three
TMOS, initiator is cumyl peroxide, and the parts by weight proportioning of wherein each component is as follows：
20~80 parts of LLDPE, 20~80 parts of low density polyethylene (LDPE), dibutyl tin laurate class compound 1
~3 parts, 1~2 part of antioxidant, 0.5~2 part of vinyltrimethoxy silane, 0.01~0.04 part of cumyl peroxide, lubrication
1~4 part of agent.
The production technology of above-mentioned crosslinked polyethylene, comprises the following steps：
1）Prepare catalyst master batch：The catalyst master batch includes low density polyethylene (LDPE), dibutyl tin laurate class compound
And antioxidant, these three compositions are obtained by single screw extrusion machine melting extrusion, wherein the mass fraction of each component is with such as
Under：
100 parts of low density polyethylene (LDPE), 10~30 parts of dibutyl tin laurate class compound, antioxidant：10~20 parts；
2）By 20~80 parts of LLDPE, 10~70 parts of low density polyethylene (LDPE), 12~15 parts of catalyst master batch,
Entered by vacuum lead in feeding drying unit, carry out drying and processing；
3）In the pot that the material of drying is transferred to dynamic response machine, silane crosslinker vinyl trimethoxy is added
After 0.5~2 part of silane, 0.01~0.04 part of initiator cumyl peroxide, 1~4 part of lubricant, pot is sealed；
4）The pot of dynamic response machine is vacuumized, heated；
5）The agitating device for opening dynamic response machine starts to stir material, allows material in pot to be oozed at a certain temperature
Transflection should；
6）React after 20~30min times, stop heating stirring, material is put into after material storing box, entered by wind pipe
In the reaction warehouse for entering static reaction machine, in reaction warehouse natural cooling, reaction is complete；
7）Crosslinked polyethylene material complete, that temperature is also reduced to room temperature will be reacted, is detected, packing pack.
It is preferred that, in step 4）In, it is 80~85 DEG C to control pot body temperature, it is ensured that temperature of charge is kept away at 60~65 DEG C
Exempt from that temperature is too high to cause early stage graft crosslinking, temperature is too low to cause grafting imperfection, cause crosslinking not enough.
It is preferred that, in step 5）In, the agitating device rotating speed of dynamic response machine is 500r/min.
It is preferred that, in step 2）In used feeding drying unit include barrel, electric cabinet, the second blower fan, electrothermal tube, electricity
Second charging aperture and blast pipe are provided with the top of hot cylinder and filter element, the barrel, the filter element is arranged on barrel bottom,
Second fan outlet is connected by electrothermal tube with filter element bottom, and the electrothermal tube is arranged on the second fan outlet and electricity
The junction of hot cylinder, between the filter element lower end and the second discharging opening provided with can push-and-pull big plate, second blower fan
It is connected with electrothermal tube with electric cabinet, the second charging aperture is connected with vacuum intake pipe, second discharging opening is anti-with dynamic
The first charging aperture of machine is answered to be connected.
It is preferred that, dynamic response machine used includes base, motor and pot in step 2,3,4,5, and the pot is led to
Cross vacuum line with vavuum pump to be connected, first charging aperture, the 3rd charging aperture and temperature element, pot bottom are provided with the top of the pot
Portion side, which is provided with the first discharging opening, pot, to be set by motor-driven agitating element, pot peripheral hardware boiler clothing and pot outer wall and stove
It is provided between set below heating element heater, first discharging opening and is provided with material storing box, the first charging aperture and feeding drying unit
Outlet be connected.
It is preferred that, static reaction machine used includes control cabinet, reaction warehouse, air intake duct, the first blower fan, suction in step 6
Expects pipe, outlet valve and material bin, first blower fan is connected with control cabinet and the first blower fan passes through on air intake duct and reaction warehouse
Air inlet connection is held, the suction tube is connected with the material inlet of reaction warehouse, and the suction tube import is arranged on the thing of material storing box
In material, the outlet valve is arranged between reaction warehouse and material bin, and the material bin divides into material outlet, the material outlet
Positioned at the top of packaging sack.
It is using the beneficial effect produced by above-mentioned technical proposal：It is this dynamic using dynamic response machine and static reaction machine
High-quality, inexpensive crosslinked polyethylene can be made in the production technology of quiet combination, can considerably reduce production cost, the present invention
Production process it is simple to operation, whole production process not blowdown, noise are low, produced without pernicious gas, meet civilized life
Production, the regulation of environmental requirement；The crosslinked polyethylene material produced using the production technology has excellent property, properties of product
It is stable, and present invention production equipment used is simple in construction, also saves production cost, it is adaptable to mass produce.
Brief description of the drawings
Fig. 1 is the structural representation of dynamic response machine in the embodiment of the present invention；
Fig. 2 is the structural representation of static reaction machine in the embodiment of the present invention；
Fig. 3 is the structural representation of feeding drying unit in the embodiment of the present invention；
Fig. 4 is Fig. 3 right view；
In figure：1- bases, 2- motors, 3- pots, 4- first charging apertures, the charging apertures of 5- the 3rd, the discharging openings of 6- first, 7- adds
Thermal element, 8- material storing box, 9- control cabinets, 10- reaction warehouses, 11- air intake ducts, the blower fans of 12- first, 13- suction tubes, 14- outlet valves
Door, 15- material bins, 16- material outlets, 17- barrels, 18- electric cabinets, the blower fans of 19- second, 20- electrothermal tubes, 21- electrothermal tubes,
22- second charging apertures, 23- blast pipes, 24- funnels, 25- screen clothes, 26- hinges, 27- top covers, 28- discharging joints, 29- forms,
Covered on 30- boiler clothings, 31- main shafts, 32- agitating paddles, 33-, 34- cylinders, 35- locking devices, 36- feeding warehouses, 37- delivery pipes, 38-
Secondary inlet scoop, 39- vacuum tube joints, 40- filtering casees, 41- microswitches, 42- deflectors, the small plates of 43-, 44- thermometrics member
Part, 45- discharging cylinders, 46- ball valves, 47- vacuum lines, 48- signal wires, the big plates of 49-, 50- visors, 51- suspension ring.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
A kind of crosslinked polyethylene, including LLDPE, low density polyethylene (LDPE), catalyst, antioxidant, crosslinkable silane
Join agent, initiator and lubricant, the catalyst is dibutyl tin laurate class compound, and silane crosslinker is vinyl front three
TMOS, initiator is cumyl peroxide, and the parts by weight proportioning of wherein each component is as follows：
20~80 parts of LLDPE, 20~80 parts of low density polyethylene (LDPE), dibutyl tin laurate class compound 1
~3 parts, 1~2 part of antioxidant, 0.5~2 part of vinyltrimethoxy silane, 0.01~0.04 part of cumyl peroxide, lubrication
1~4 part of agent.
The production technology of above-mentioned crosslinked polyethylene, comprises the following steps：
1）Prepare catalyst master batch：The catalyst master batch includes low density polyethylene (LDPE), catalyst dibutyl tin laurate class
Compound and antioxidant, these three compositions are obtained by single screw extrusion machine melting extrusion, wherein the mass fraction of each component
Proportioning is as follows：
100 parts of low density polyethylene (LDPE), 10~30 parts of dibutyl tin laurate class compound, antioxidant：10~20 parts；
2）By 20~80 parts of LLDPE, 10~70 parts of low density polyethylene (LDPE), 12~15 parts of catalyst master batch,
Entered by vacuum lead in feeding drying unit, carry out drying and processing；
3）In the pot that the material of drying is transferred to dynamic response machine, silane crosslinker vinyl trimethoxy is added
After 0.5~2 part of silane, 0.01~0.04 part of initiator cumyl peroxide, 1~4 part of lubricant, pot is sealed；
4）The pot of dynamic response machine is vacuumized, heated, it is 80~85 DEG C to control pot body temperature, it is ensured that temperature of charge
At 60~65 DEG C, it is to avoid temperature is too high to cause early stage graft crosslinking, and temperature is too low to cause grafting imperfection, cause crosslinking not enough；
5）The agitating device for opening dynamic response machine starts to stir material, rotating speed 500r/min, allows in pot material in spy
Determine to carry out permeable reactive at temperature；
6）React after 20~30min times, stop heating stirring, material is put into after material storing box, entered by wind pipe
Enter in reaction warehouse, in reaction warehouse natural cooling, reaction is complete；
7）Crosslinked polyethylene material complete, that temperature is also reduced to room temperature will be reacted, is detected, packing pack.
The design parameter value of each batch is as shown in the table in above-mentioned crosslinked polyethylene production process.
Crosslinked polyethylene production equipment used in above-mentioned crosslinked polyethylene production technology, as Figure 1-4, including feeding dries
Equipment for drying, dynamic response machine and static reaction machine, dynamic response machine as shown in Figure 1 include base 1, motor 2 and pot 3, institute
State pot 3 by vacuum line with vavuum pump to be connected, the top of pot 3 is provided with first charging aperture 4, the 3rd charging aperture 5 and surveys
Warm element 44, the bottom sides of pot 3 are provided with the first discharging opening 6, pot 3 and set outside the agitating element driven by motor 2, pot 3
If being provided with heating element heater 7 between boiler clothing 30 and the outer wall of pot 3 and boiler clothing 30, heat losses, protection operating personnel's person can be avoided
Safety, the lower section of the first discharging opening 6 is provided with material storing box 8, and the first charging aperture 4 is connected with the outlet of feeding drying unit；
Static reaction machine as shown in Figure 2 includes control cabinet 9, reaction warehouse 10, air intake duct 11, the first blower fan 12, suction tube 13, outlet valve
Door 14 and material bin 15, first blower fan 12 is connected with control cabinet 9 and the first blower fan 12 passes through air intake duct 11 and reaction warehouse 10
Upper end air inlet connection, the suction tube 13 is connected with the material inlet of reaction warehouse 10, and the import of suction tube 13 is arranged on storage
In the material of hopper 8, the outlet valve 14 is arranged between reaction warehouse 10 and material bin 15, and the material bin 15 divides into material
Outlet 16, the material outlet 16 is located at the top of packaging sack.
Temperature element 44 in Fig. 1 is that the exposed display on thermocouple, the thermocouple can be intuitively shown in pot 3
Temperature, thermocouple probes into the bottom in pot 3 and is arranged in deflector 42, and the deflector 42 has fairing ace, water conservancy diversion
On the one hand plate 42 can avoid the material excessive friction in whipping process and damage thermocouple, on the other hand can transport Matter Transfer
It is dynamic, make material mixing more abundant, the particular location of deflector 42 depends on the material that will be mixed, and its water conservancy diversion angle and height are equal
It is adjustable；The heating element heater 7 is heat transfer oil electric heating pipe, and the arc electric hot plate uniformly at intervals outside pot 3 is immersed in into conduction oil
It is interior, by electric hot plate by heat-conducting oil heating, and then pot 3 is transferred heat to, while being additionally provided with temperature control on the outer wall of boiler clothing 30
Device, can control the temperature in pot 3 according to the temperature of conduction oil in boiler clothing 30；The agitating element includes main shaft 31 and stirred
Oar 32 is mixed, the agitating paddle 32 is uniformly arranged on main shaft 31, the main shaft 31 is vertically set on the bottom of pot 3 and by passing
Dynamic component is driven by motor 2, is rotated by the drive shaft 31 of motor 2, so as to drive agitating paddle 32 to be sufficiently stirred for thing in pot 3
Material.
Dismount and repair for convenience, the top of pot 3 is provided with upper lid 33, described upper one end of lid 33 and the piston of cylinder 34
It is connected, the other end is connected by locking device 35 with the side wall of pot 3, the cylinder 34 is arranged on the outer wall of pot 3, is filled by locking
Lid 33 can be opened and lock by putting 35, and lid 33 in opening can be will assist in the presence of cylinder 34, and reduction operating personnel's work is strong
Degree；First discharging opening 6 is provided with operated pneumatic valve, and the operated pneumatic valve is connected with discharging cylinder 45.The specification of locking device 35
Can as needed commercially.
Triplate line is provided between the 3rd charging aperture 5 and upper lid 33 in Fig. 1, the branch road of triplate line is and vavuum pump phase
Vacuum line 47 even, the feeding pipe of the lower section of the 3rd charging aperture 5 is provided with ball valve 46, the ball valve 46 and triplate line
Between be provided with feeding warehouse 36.
Suction tube 13 in Fig. 2 is connected by delivery pipe 37 with the material inlet of reaction warehouse 10, and suction tube 13 with it is defeated
Send and secondary inlet scoop 38 and vacuum tube joint 39 are provided between pipe 37, the vacuum tube joint 39 is connected with delivery pipe 37, defeated
Outside air in the presence of suction force is sent in pipe 37 to form air stream through the suction of secondary inlet scoop 38, can be by suction tube 13
Material is carried along into delivery pipe 37 and enters reaction warehouse 10；Filter is additionally provided between the air inlet of first blower fan 12 and air intake duct 11
Knock-out 40, for filtering the air entered in the first blower fan 12, can avoid the impurity in the air in air intake duct 11 from entering first
Blower fan 12 and influence it to run well.
In order to improve the automaticity of equipment, the outlet valve 14 of the reaction warehouse 10 is from magnetic valve and in reaction
The microswitch 41 of one and electromagnetic valve linking are installed in the outlet of storehouse 10, and the microswitch 41 is equal by signal wire 48 with magnetic valve
It is connected with control cabinet 9.Magnetic valve is closed before suction tube 13 starts suction, while touching microswitch 41,9 pair first of control cabinet
Blower fan 12 sends instruction, starts the first blower fan 12 and starts exhausting by air intake duct 11, makes to form vacuum in reaction warehouse 10, while defeated
Send in pipe 37 and also form negative pressure, in delivery pipe 37 under suction force effect, enter by secondary inlet scoop 38 and vacuum tube joint 39
Entering the air-flow of delivery pipe 37 can smoothly suck material in suction tube 13 in delivery pipe 37.
As shown in Figure 3,4, the feeding drying unit include barrel 17, electric cabinet 18, the second blower fan 19, electrothermal tube 20,
Electrothermal tube 21 and filter element, the top of barrel 17 are provided with second charging aperture 22 and blast pipe 23, and the filter element is set
In the bottom of barrel 17, the outlet of the second blower fan 19 is connected by electrothermal tube 21 with filter element bottom, and the electrothermal tube 20 is set
Put and export the junction with electrothermal tube 21 in the second blower fan 19, being provided between the filter element lower end and the second discharging opening 22 can
The big plate 49 of push-and-pull, second blower fan 19 and electrothermal tube 20 are connected with electric cabinet 18, the second charging aperture 22 with it is true
Suction expects pipe is connected, and second discharging opening 22 is connected with the first charging aperture 4 of dynamic response machine.
The filter element includes conical hopper 24 and screen cloth 25, and the screen cloth 25 includes upper screen cloth and lower screen cloth, described
Upper screen cloth is arranged on the top of funnel 24, and the lower screen cloth is arranged on the side wall of funnel 25, and material is dried in the presence of hot air flow
It is dry, the double-filtration by screen cloth 25 is needed during discharging；For the ease of dismantling and repairing, the upper end of funnel 24 and barrel 17
Bottom end is by the way that hinge 26 is hinged, the other end is connected by locking device 35；The top of barrel 17 is provided with top cover
27, the top cover 27 and the side wall one end of barrel 17 are by the way that hinge 26 is hinged, the other end is connected by locking device 35, institute
State second charging aperture 22 and blast pipe 23 is arranged on top cover 27；Suspension ring 51, convenient peace are housed in the bottom margin of barrel 17 simultaneously
Assembly and disassembly are unloaded, and are installed visor 50 in the side wall of barrel 17, can more easily be observed material in barrel 17,.
The funnel 24 divides into discharging joint 28, and the second charging aperture 22 is arranged on the side of discharging joint 28 obliquely.
The discharging situation of barrel 17 is observed for convenience, is provided with form 29 on discharging joint 28, the big plate 49 is arranged on discharging
Between joint 28 and funnel 24, during drying materials, the lower end of funnel 24 is blocked using big plate 49, makes the air of heating
Stream sequentially enters funnel 24 and barrel 17, materials inside is fully dried；Set between the second charging aperture 22 and discharging joint 28
There is small plate 43, pass through the controllable discharging of the small plate 43 of push-and-pull.
The crosslinked polyethylene produced using above-mentioned crosslinked polyethylene production technology uses conventional method and common experimental equipment
The result tested according to the standards of JB/T 10437 is as follows：
Test result indicates that：The crosslinked polyethylene material produced using the production technology has excellent property, and
Production equipment used of the invention is simple in construction, also saves production cost, it is adaptable to mass produce.
In summary, the present invention can be made using dynamic response machine and this production technology being association of activity and inertia of static reaction machine
High-quality, inexpensive crosslinked polyethylene, can considerably reduce production cost, and production process of the invention is simply easily grasped
Make, whole production process not blowdown, noise are low, produced without pernicious gas, meet carry out production strictly in line with rules and regulations, the regulation of environmental requirement, utilize
The crosslinked polyethylene material performance that the production technology is produced is stable, is adapted to large-scale promotion application.
Claims (5)
1. a kind of crosslinked polyethylene production technology, it is characterised in that comprise the following steps：
1）Prepare catalyst master batch：The catalyst master batch includes low density polyethylene (LDPE), dibutyl tin laurate class compound and resisted
Oxygen agent, these three compositions are obtained by single screw extrusion machine melting extrusion, and the mass fraction proportioning of wherein each component is as follows：
100 parts of low density polyethylene (LDPE), 10~30 parts of dibutyl tin laurate class compound, 10~20 parts of antioxidant；
2）By 20~80 parts of LLDPE, 10~70 parts of low density polyethylene (LDPE), 12~15 parts of catalyst master batch, pass through
Vacuum lead enters in feeding drying unit, carries out drying and processing；
3）In the pot that the material of drying is transferred to dynamic response machine, silane crosslinker vinyltrimethoxy silane is added
0.5~2 part, 0.01~0.04 part of initiator cumyl peroxide, after 1~4 part of lubricant, pot is sealed；
4）The pot of dynamic response machine is vacuumized, heated；
5）The agitating device for opening dynamic response machine starts to stir material, allows material in pot to carry out permeating anti-at a certain temperature
Should；
6）React after 20~30min times, stop heating stirring, material is put into after material storing box, enters in meditation by wind pipe
In the reaction warehouse of state reaction machine, in reaction warehouse natural cooling, reaction is complete；
7）Crosslinked polyethylene material complete, that temperature is also reduced to room temperature will be reacted, is detected, packing pack；
The ingredient groups of obtained crosslinked polyethylene point include LLDPE, low density polyethylene (LDPE), catalyst, antioxygen
Agent, silane crosslinker, initiator and lubricant, the catalyst are dibutyl tin laurate class compound, and silane crosslinker is
Vinyltrimethoxy silane, initiator is cumyl peroxide, and the parts by weight proportioning of wherein each component is as follows：
20~80 parts of LLDPE, 20~80 parts of low density polyethylene (LDPE), dibutyl tin laurate class compound 1~3
Part, 1~2 part of antioxidant, 0.5~2 part of vinyltrimethoxy silane, 0.01~0.04 part of cumyl peroxide, lubricant 1
~4 parts；
Dynamic response machine used includes base（1）, motor（2）And pot（3）, the pot（3）By vacuum line and very
Empty pump is connected, the pot（3）Top is provided with first charging aperture（4）, the 3rd charging aperture（5）And temperature element（44）, pot（3）
Bottom sides are provided with the first discharging opening（6）, pot（3）Inside set by motor（2）The agitating element of driving, pot（3）Peripheral hardware boiler clothing
（30）And pot（3）Outer wall and boiler clothing（30）Between be provided with heating element heater（7）, first discharging opening（6）Lower section is provided with storing
Case（8）, the first charging aperture（4）Outlet with feeding drying unit is connected.
2. crosslinked polyethylene production technology as claimed in claim 1, it is characterised in that：In step 4）In, temperature in control pot
Spend for 80~85 DEG C, it is ensured that temperature of charge is at 60~65 DEG C, it is to avoid temperature is too high to cause early stage graft crosslinking, and temperature is too low to be caused
Imperfection is grafted, causes crosslinking not enough.
3. crosslinked polyethylene production technology as claimed in claim 1, it is characterised in that：In step 5）In, dynamic response machine
Agitating device rotating speed is 500r/min.
4. crosslinked polyethylene production technology as claimed in claim 1, it is characterised in that：In step 2）In used feeding dry
Equipment for drying includes barrel（17）, electric cabinet（18）, the second blower fan（19）, electrothermal tube（20）, electrothermal tube（21）And filter element, institute
State barrel（17）Top is provided with second charging aperture（22）And blast pipe（23）, the filter element is arranged on barrel（17）Bottom,
Second blower fan（19）Outlet passes through electrothermal tube（21）Connected with filter element bottom, the electrothermal tube（20）It is arranged on second
Blower fan（19）Outlet and electrothermal tube（21）Junction, the filter element lower end and the second discharging opening（22）Between provided with can push away
The big plate drawn（49）, second blower fan（19）And electrothermal tube（20）And electric cabinet（18）It is connected, the second charging aperture
（22）It is connected with vacuum intake pipe, second discharging opening（22）With the first charging aperture of dynamic response machine（4）It is connected.
5. crosslinked polyethylene production technology as claimed in claim 1, it is characterised in that：Static reaction used in step 6
Machine includes control cabinet（9）, reaction warehouse（10）, air intake duct（11）, the first blower fan（12）, suction tube（13）, outlet valve（14）With
Material bin（15）, first blower fan（12）With control cabinet（9）It is connected and the first blower fan（12）Pass through air intake duct（11）With reaction
Storehouse（10）Upper end air inlet connection, the suction tube（13）With reaction warehouse（10）Material inlet connection, the suction tube（13）
Import is arranged on material storing box（8）Material in, the outlet valve（14）It is arranged on reaction warehouse（10）And material bin（15）Between,
The material bin（15）Divide into material outlet（16）, the material outlet（16）Positioned at the top of packaging sack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621222.XA CN105131417B (en) | 2015-09-25 | 2015-09-25 | A kind of crosslinked polyethylene and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621222.XA CN105131417B (en) | 2015-09-25 | 2015-09-25 | A kind of crosslinked polyethylene and its production technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105131417A CN105131417A (en) | 2015-12-09 |
| CN105131417B true CN105131417B (en) | 2017-08-01 |
Family
ID=54717019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621222.XA Active CN105131417B (en) | 2015-09-25 | 2015-09-25 | A kind of crosslinked polyethylene and its production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105131417B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115383935B (en) * | 2022-08-26 | 2023-04-25 | 江西伊西电气有限公司 | Preparation process of high-performance polyethylene material for polymer insulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104262770A (en) * | 2014-09-16 | 2015-01-07 | 安徽美腾特种电缆材料有限公司 | Preparation technique of silane crosslinked polyethylene cable material by one-step process |
-
2015
- 2015-09-25 CN CN201510621222.XA patent/CN105131417B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105131417A (en) | 2015-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205808037U (en) | A kind of novel materal drier | |
| CN105131417B (en) | A kind of crosslinked polyethylene and its production technology | |
| CN205109571U (en) | Crosslinked polyethylene production facility | |
| CN206656564U (en) | A kind of drying system for agriculture and forestry plant seed | |
| CN108850151A (en) | A kind of paddy mechanical drying device | |
| CN105170028B (en) | A kind of crosslinked polyethylene production equipment | |
| CN207763450U (en) | A kind of fire retardant finished product rapid drying device | |
| CN107152851A (en) | A kind of agricultural uses blowing-type grain drying device | |
| CN219368288U (en) | Automatic drying device of tealeaves | |
| CN208296513U (en) | A kind of tea seed drying box | |
| CN207772181U (en) | A kind of color masterbatch drying device | |
| CN206384563U (en) | A kind of food cooling transmission equipment | |
| CN210801947U (en) | Drying equipment for fine chemical engineering | |
| CN206344333U (en) | A kind of vacuum drying device for plastic grain | |
| CN210242256U (en) | Desiccator is used in production of high silicon manganese-silicon alloy | |
| CN210801875U (en) | High-efficient drying cabinet of chemicals | |
| CN207643460U (en) | A kind of Masterbatch hot mixing mixer | |
| CN206199256U (en) | One kind can carry out cleaning and sterilizing retort | |
| CN208182199U (en) | A kind of vacuum automatic charging machine | |
| CN207290586U (en) | A kind of heated at high speed mixer for producing color masterbatch | |
| CN207395425U (en) | A kind of drying device suitable for rice paddy seed | |
| CN207062180U (en) | A kind of resistant starch preparation boiling drier | |
| CN206427364U (en) | Drum packing machine | |
| CN207351129U (en) | Hot air circulation type drying machine | |
| CN212566691U (en) | Disposable latex product drying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 051130 north section of Huaiyang street, Yuanshi County, Shijiazhuang City, Hebei Province Patentee after: Hebei Shanghua New Materials Co.,Ltd. Address before: 051130 north section of Huaiyang street, Yuanshi County, Shijiazhuang City, Hebei Province Patentee before: HEBEI SHANGHUA PLASTIC TECHNOLOGIES Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 1 Blue Circuit, Tianshan International Manufacturing Industrial Park, Hongqi Street, Suyang Township, Yuanshi County, Shijiazhuang City, Hebei Province 051137 Patentee after: Hebei Shanghua New Materials Co.,Ltd. Address before: 051130 north section of Huaiyang street, Yuanshi County, Shijiazhuang City, Hebei Province Patentee before: Hebei Shanghua New Materials Co.,Ltd. |