CN106426626A - Pretreatment process of composite optical materials - Google Patents
Pretreatment process of composite optical materials Download PDFInfo
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- CN106426626A CN106426626A CN201610860345.3A CN201610860345A CN106426626A CN 106426626 A CN106426626 A CN 106426626A CN 201610860345 A CN201610860345 A CN 201610860345A CN 106426626 A CN106426626 A CN 106426626A
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- composite optical
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- extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B2013/005—Degassing undesirable residual components, e.g. gases, unreacted monomers, from material to be moulded
Abstract
The invention provides a pretreatment process of composite optical materials. The pretreatment process of the composite optical materials comprises the following steps: mixing after drying the composite optical materials, and stirring and mixing uniformly by a dry method; and feeding the composite optical materials in production equipment to produce and treat the materials. The composite optical materials are mixed at first, then are pressed by an external force, and finally are extruded to obtain compact bubble-free materials suitable for next production of the composite optical materials to realize compactness and zero bubble of the materials. The pretreatment process of the composite optical materials is suitable for large-scale production and treatment (greater than 1 kilogram), a treatment method is simple and convenient, efficiency is high, and uniformity and stability of feeding of a next process and production of products are improved.
Description
Technical field
The present invention relates to technical field of material, and in particular to a kind of pre-treating technology of composite optical material.
Background technology
Macromolecule protein stone is a kind of NEW TYPE OF COMPOSITE optical material, can be applicable to wearable device outward appearance, dress ornament, Building wood
Material, electromechanical surfacing, the aspect such as false proof, disclose in CN103534079 A and prepare high score with core-shell structure polymer microballoon
A kind of opaline technology of preparing of son, makes microsphere be arranged in rule in laminar film by the shearing force that sandwich is produced
Structure, and then produce the similar opaline optical texture color of nature.Qibin Zhao et al. is in " Large-scale ordering
of nanoparticles using viscoelastic shear processing”(Nature Communications
2016,7：11661) in, this preparation technology is expanded on further, the action principle to shearing force and effect are carried out
Study in detail.
Core-shell structure polymer microballoon as raw material is powder body, block or granular, is creamy white, not substantially
Opal structural color, need through a series of processed formed final application macromolecule protein stone composite optical material
Product.Experiencing, in the actual production of macromolecule protein stone composite optical material, the sandwich shears technique that above-mentioned document is announced
Had to pass through dry raw material extruding-out process before so that the closely knit bubble-free of material is realized, and formed suitable for follow-up pressure
The shape of membrane treatment process, this process is referred to as the pre-treating technology of composite optical material.
In currently available technology, all briefly touching upon needed to carry out material certain front process before sandwich is formed,
Such as extrusion, coating etc., but clear and definite solution is not all proposed, particular technique explanation is not carried out to this technical process.Such as
Fruit lacks this pre-treatment step, and material cannot be closely knit, easily produces the defects such as pore, or material shape is irregularly held
Easily destruction is produced to the charging of subsequent processing and the uniformity of production and stability.
In prior art, concrete regulation is not carried out to the pretreatment process of composite optical material, is carried in minority document
And processing procedure be not to be realized using industrial general equipment, such as in Qibin Zhao et al. Nature
In Communication article to the process of this process be directly by the miniature extruder of HAAKE by 5-10g raw material block or
Powder body be extruded as 1-2mm thickness, the wide thin strip of 3-4mm, do not possess the ability of industrial mass production.
Content of the invention
In order to overcome above problems of the prior art, the present invention discloses a kind of pre-treatment work of composite optical material
Skill, was carried out before sandwich is formed, and the present invention is mainly granular from core shell structure polymer microballoon powder body or block to raw material
State initial condition to carry out roll-in film forming or compressing before this technical process illustrate, this process is roll-in
The indispensable step that film forming or compressing technique are carried out, to realize the closely knit bubble-free of material, the present invention is applied to extensive raw
Product is processed (more than 1 kilogram), and handling process is comprised the following steps：
Step (1), composite optical material is dry after mix using dry stirring mix homogeneously；
Step (2), the composite optical material equipment of putting into production is carried out material production and processing, composite optical material is first
After being mixed, then through natural compression, finally extrude and obtain closely knit bubble-free suitable next step composite optical material production
Shape.
Any of the above-described scheme is preferably, and the production equipment in step (2) includes extrusion equipment, former, squeezes
Go out equipment and be directly connected to former.
Any of the above-described scheme is preferably, and the production equipment in step (2) also includes supercharging equipment, and supercharging equipment is even
Connect extrusion equipment and former.
Any of the above-described scheme is preferably, and according to the input of raw material and the direction order of output, extrusion equipment is used as equipment
Foremost, discharging opening is connected to supercharging equipment, supercharging equipment by flange and connecting tube to the cylinder of extrusion equipment to line foremost
Former is connected to by flange and connecting tube.
Any of the above-described scheme is preferably, and the axial axis of extrusion equipment, supercharging equipment and former should be along
Material flow direction remains straight line.
Any of the above-described scheme is preferably, the control of the extrusion equipment, supercharging equipment, former by control system
Accurate zonal control of the temperature in the range of 20-200 DEG C can all be realized.
Any of the above-described scheme is preferably, and the work of the extrusion equipment, supercharging equipment and former arranges the highest temperature
Degree is less than 140 DEG C.
Any of the above-described scheme is preferably, and the work of the extrusion equipment, supercharging equipment and former arranges temperature and is
80-130℃.
Any of the above-described scheme is preferably, and the processing procedure of material is：Extrusion equipment put into by material, enters from extrusion equipment
After entering supercharging equipment, high pressure being provided by supercharging equipment and pushing former, material obtains suitable next through former extrusion
The shape of step composite optical material production.
Any of the above-described scheme is preferably, and before the material puts into extrusion equipment, needs to crush the granule for small particle
And fragment.
Any of the above-described scheme is preferably, and the granule of the small particle and the diameter of fragment should be not more than 5mm.
Any of the above-described scheme is preferably, and the extrusion equipment is extruder.
Any of the above-described scheme is preferably, and the extruder is double screw extruder or single screw extrusion machine.
Any of the above-described scheme is preferably, and the extruder possesses low rotation speed large torque power and transmission combination, combines spiral shell
Shank diameter is in more than 25mm.
Any of the above-described scheme is preferably, and the working speed of the extruder is 20-200 rev/min.
Any of the above-described scheme is preferably, and the working speed of the extruder is 60-100 rev/min.
Any of the above-described scheme is preferably, and the supercharging equipment includes high-pressure pump and/or booster pump and/or gear pump.
Any of the above-described scheme is preferably, and the former is die head.
Any of the above-described scheme is preferably, and the die head is any one in sheet die, strand die or tubing die head
Kind.
Any of the above-described scheme is preferably, and specific operation process is comprised the following steps：
Step (1), the energising of production equipment main switch is first turned on, by control system, production equipment is heated, temperature sets
120 DEG C are set to, open cooling water recirculation system and vacuum pump；The optimal process temperature of material is 80 130 DEG C of intervals, temperature
The mobility of higher material is more good therefore less to the burden of equipment, and under identical load, higher temperature can make the product of material
Amount is improved, and therefore should adopt higher temperature as far as possible in the tolerance range of material；But due to twin-screw extrusion
Machine can produce extra heat with material friction when screw rod high-speed rotation, and equipment is typically unable to direct detection material sheet
The temperature of body, and the temperature of cylinder can only be controlled, so the temperature of material itself can be with setting during reality processing
Temperature has certain deviation, simultaneously because temperature controlled hysteresis quality, the temperature-controlled precision of equipment may not can guarantee that completely accurately, have
Certain fluctuation up and down, preferable equipment can realize the temperature of temperature control and the heating-up temperature error of cylinder reality in 1 DEG C of scope
Interior.Certain surplus should be left when design temperature when these factors are considered, be therefore traditionally arranged to be 120
DEG C, can ensure that material actual temperature in process will not be high simultaneously under the conditions of the mobility of guarantee material is preferable
In tolerable temperature.
After step (2), equipment each several part to be produced reach design temperature and temperature stabilization, by ready complex optics
Material puts into extruder feeding hopper, and this step can be carried out before step (1)；
Step (3), successively unlatching gear pump, main motor, arrange main motor rotating speed and gear revolution speed；Tooth is first opened
The reason for wheel pump be if having a surplus originally material in equipment, then first start main motor screw rod rotate when extruder barrel in
Material will convey in gear pump, and now gear pump not yet starts, then cause the internal raw material of extruder overstock produce larger
Interior pressure, easily beyond interior pressure limit value and cause accident.
Step (4), unlatching feeding machine, material enters cylinder under the drive of feeding machine, and by screw combinations extrusion shearing
It is fed forward；
Step (5), material are transported into die head, are finally extruded as continuous sheet material；
Step (6), place the sheet material winding of extrusion and properly.
Any of the above-described scheme is preferably, and in step (3), main motor rotating speed is set to 80 revs/min, gear pump
Rotating speed is set to 30 revs/min.
Any of the above-described scheme is preferably, and the feeding machine rotating speed in step (4) is set to 8Hz.
Any of the above-described scheme is preferably, and step (5) can control die lip by the governor motion of adjustment die head
The gap width of open slots, produces the sheet material of desired thickness.
Any of the above-described scheme is preferably, and the material composition of the composite optical material includes polystyrene, polyacrylic acid
Ethyl ester, polymethyl methacrylate, cross-linking agent and additive.
Any of the above-described scheme is preferably, and the additive includes plasticizer, wax, carbon dust, powder pigment, fluorescent material, pearl
At least one in light powder.
Any of the above-described scheme is preferably, and the addition of the powder pigment is 0.1% the 5% of Nano microsphere weight.Multiple
The raw material for closing optical material is that main component is through dry polymer core shell structural nano microsphere powder body or bulk material
Polystyrene, polyethyl acrylate, polymethyl methacrylate etc. and a small amount of cross-linking agent and other additives, core shell structure
Nano microsphere size diameter is in 150 500 nanometer range.Other additives include to change material plasticity plasticizer,
Wax and the carbon dust played a role by the modulation of the optical property of material, various powder pigments, fluorescent material, pearl essence, used as material
The addition of the various toners of material optical property modulation filling is generally 0.1% the 5% of Nano microsphere weight, adds as needed
Plus or without and adjusting ratio.Core shell structure polymer microballoon as major ingredient, various toners and other be added to as adding
Material, after dry stirring mix homogeneously, the equipment of putting into production carries out material production and processing together.
The present invention provides a kind of pre-treating technology of composite optical material, comprises the following steps：Composite optical material is done
After dry, mixing is using dry stirring mix homogeneously；The composite optical material equipment of putting into production is carried out material production and processing, multiple
Close after optical material is mixed first, then through natural compression, finally extrusion obtains closely knit bubble-free suitable next step and is combined
The shape of optical material production, to realize the closely knit bubble-free of material, the present invention is applied to large-scale production and processes (more than 1 public affairs
Jin), processing method simplicity, efficiency high, improve the charging of subsequent processing and the uniformity of production and stability.
Description of the drawings
Fig. 1 is composite optical material pre-processing device structure top view；
Fig. 2 is the side view of Fig. 1；
Specific embodiment
In order to technical scheme and advantage is best understood from, below by way of specific embodiment, and combine accompanying drawing pair
The present invention is described further.
The present invention provides a kind of pre-treating technology of composite optical material, and handling process is comprised the following steps：
Step (1), will after the raw material drying of composite optical material mix, using dry stirring mix homogeneously；Drying meanss
60 DEG C of dryings 24 hours are positioned in baking oven for the raw material of composite optical material；Dry stirring, i.e., without any solvent, will be dry
Dry composite optical material and other powder additives are mixed by stirring or shaking the purpose for reaching mixing.
Step (2), the composite optical material equipment of putting into production is carried out material production and processing, composite optical material is first
After being mixed, then through natural compression, finally extrude and obtain closely knit bubble-free suitable next step composite optical material production
Shape.
The raw material of the composite optical material in step (1) be through dry polymer core shell structural nano microsphere powder body
Or bulk material, main component be polystyrene, polyethyl acrylate, polymethyl methacrylate etc. and a small amount of cross-linking agent and
Other additives, the Nano microsphere size diameter of core shell structure is in 150 500 nanometer range.Other additives include to change
Become the plasticizer of material plasticity, carbon dust that wax and the optical property modulation to material play a role, various powder pigments,
Fluorescent material, pearl essence, the addition as the various toners of device for Optical Properties of Materials modulation filling is generally Nano microsphere weight
0.1% 5%, it is added as needed on or without and adjusting ratio.Core shell structure polymer microballoon as major ingredient, various toners
And other additives, used as filling, after dry stirring mix homogeneously, the equipment of putting into production carries out material production and place together
Reason.
The production equipment of whole processing technology includes extruder 1, supercharging equipment 2, former 3 (as Fig. 1 and Fig. 2 institute
Show), according to the input of material and the direction order of output, as equipment line foremost, the cylinder of extruder 1 is most for extruder 1
Front end discharging opening is connected to supercharging equipment 2 by flange and connecting tube, and supercharging equipment 2 is connected to molding by flange and connecting tube
Equipment 3, extruder 1 includes feeding hopper 11 and cylinder 12, and feeding hopper 11 is arranged on top, one end of extruder 1 also with mair motor 4
Connection, therefore the processing procedure of composite optical material is carried out along following equipment line：
Extruder feeding hopper 11>Extruder barrel 12>Connection>Supercharging equipment 2>Connection>Former 3
The said equipment line should remain straight line along the axial axis of material flow direction, various control devices
And water tank, vacuum pump, control electronic box etc. are laid in position according to the requirement of equipment.
In the said equipment line, extruder 1 is used as pressing closely and mixing arrangement, and connecting extruder 1 is responsible for by supercharging equipment 2
With former 3, material from extruder 1 enter supercharging equipment 2 after, provide high pressure by supercharging equipment 2 and push former 3,
This supercharging equipment 2 includes high-pressure pump and gear pump；Material final extrusion after former 3 obtains being suitable for next step complex light
The shape of material production is learned, is die head in this former.Polymer nano-microspheres composite optical material due to core shell structure
High viscoelasticity, poor to the mobility in the range of 140 DEG C in room temperature, when molding, therefore need larger pressure, pressure
The numerical value of power can be changed according to the size of molding die and the design of die head, and preferably design can cause material in less pressure
It is easy to molding extrusion under power.
The polymer nano-microspheres of core shell structure add according to the requirement of final products as major ingredient, adjuvant, shared by adjuvant
Percentage by weight (0% 5%), carries out production process in the case of mix homogeneously.Raw material is for directly throwing in the case of powder body
Enter extruder hopper, should be the granule and broken compared with granule and the laggard material bin of fragment of small particle through crushing in the case of block
The diameter of piece should be not more than 5mm, the different feeding machines machinery different to the size requirements of particle diameter, relatively large with extruder model
(more than 30 type extruders) are more loose to Particle size requirements size.Extrusion equipment mainly has two classes, and a class is double screw extruder,
An other class is single screw extrusion machine.Double screw extruder is suitable for the raw material of major ingredient filling mixing, and twin screw rotates cutting for offer
The effect of cutting can mix the raw material of different component evenly, while it is intrinsic pressure to provide larger extrusion；Single screw extrusion machine
Cost is relatively low, is suitable for the extrusion of single raw material.
Generally double screw extruder is adopted for opal optical material.Twin screw due to double screw extruder
Certain heat can be produced when rotating with material shearing friction, the actual temperature of the higher material of rotating speed may be higher, cause patch
The material actual temperature of nearly screw rod is not inconsistent with the extruder barrel temperature for setting, and causes material higher than (140 DEG C under tolerable temperature
Left and right) destruction is produced, simultaneously because the mobility of material is poor, (80 130 DEG C) viscoelasticity is higher at the working temperature, screw rod
Rotate and larger moment of torsion is may require that, therefore extruder selects low rotation speed large torque power and transmission combination design, normal work turns
Speed is 20 200 revs/min, and optimum for 60 100 revs/min, combined threaded rod diameter should be in more than 25mm, and screw diameter is directly determined
The model size of extruder is determined, the extruder of the screw combinations composition of such as 25mm diameter is commonly referred to as 25 type extruders, spiral shell
Underproducing for extruder 1 is caused if shank diameter is too small, is generally used for the extruder of large-scale industrial production for meeting yield
Demand all should be from more than or equal to 25 types.
Supercharging equipment 2 is mainly booster pump/gear pump, generally the intrinsic pressure material for being insufficient to allow extrusion of extruder 1
Material is directly over former molding, therefore provides pressure using supercharging equipment as middle connection；If extruder intrinsic pressure 1 can
To meet the pressure that needs extruded by former material, then supercharging equipment 2 can be omitted, and be directly connected to molding by extruder 1 and set
Standby.Pressure in the molding that required pressure directly depends on required for former 3, i.e. die head, while wanted by speed of production
Impact is asked, so that 450 mm wides are extruded, as a example by the strip opal composite optical material of 0.5mm thickness, using rack-style diversion Design
Die head needed for interior pressure die head arrange temperature be 120 DEG C in the case of be 20 40 MPas.Different die head design meetings
Pressure difference required for causing, for example, produce the pressure needed for the die head of a diameter of 10mm bar opal composite optical material
Power is just well below sheet die, and relatively large extruder such as 65 machines then can directly meet the pressure demand of molding.
Former is commonly referred to as die head, and the species of die design has sheet die, strand die, tubing die head etc., root
Determine, this place with the most frequently used sheet die of opal composite optical material is mainly according to the shape of die head extrusion molding material
Example.The design die lip gap of sheet die can be in scalable in the range of 0 3mm, and optimum sheet material extrusion thickness is 0.1 1.0mm.Squeeze
Go out equipment, supercharging equipment 2, former 3 and the accurate zonal control of 20 200 DEG C of temperature should be able to be all realized, control is main by control
Circuit processed controls the heater in each area and chiller to carry out, and the heating of die head can be led to from the side of die head to opposite side
The temperature that three groups or five groups of even more multigroup heating rods control zones of different respectively is crossed, by mechanical or electronically controlled
Circuit realizes the stability contorting of temperature；The different parts of extruder 1 are typically also carried out zonal control, and these are all that industrial general sets
Standby standard configuration.Work arranges maximum temperature and is less than 140 DEG C, optimum for 80 130 DEG C, preferable in the pressure situation of equipment
In the case of can adopt lower temperature, otherwise higher temperature can be adopted to reduce the pressure needed for material process.Through mould
The continuous sheet of extrusion can be directly entered the such as roll-in of next step handling process, it is also possible to which winding carries out individual processing.
Embodiment 1
Micro- with 5 kilograms of polystyrene polymethyl methacrylate polyethyl acrylate " core shell " structural polymer nanometers
Ball (diameter 250nm) powder body is raw material, and without any other filling, raw material is in powdery milky.
30 type extruders of Changzhou longitude and latitude chemical equipment in sets company production are used as extrusion equipment, equipment design parameter
As following table：
The main frame design parameter of 1. extruder of table
Twin-screw extrusion machine host
| Outer screw diameter | Φ30mm |
| Screw rod groove depth | 5mm |
| Screw rod boss ratio Do/Di | 1.55 |
| Cylinder bore | Φ30.6mm |
| Twin screw centre-to-centre spacing | 26mm |
| Main frame draw ratio | L/D=40 |
| Screw speed | Max 400rpm |
| Screw machine torque level | T/A3=5.0N.m/cm3 |
| Main motor current | 7.5KW |
| Main frame heats general power | 25KW |
| Host center height | 1000mm |
The mair motor of 2. extruder of table and main frame transmission case design parameter
Mair motor
| Motor brand | Siemens's shellfish moral |
| Power of motor | 7.5KW AC |
| Type of drive | ABB converter |
| Motor speed | 1480rpm |
| Motor degree of protection | IP54 |
| Cooling fan | Turn on main shaft |
Main frame transmission case
| Transmission case type | Conventional moment of torsion, middling speed |
| Transmission case speed ratio | I=2.5 |
| Transmission case output speed | Max 400rpm |
| Transmission case key bearing | NSK, SKF |
| Accuracy of gear grade | 6 grades |
| Gear, axial wood matter | 20CrMnTi&40CrNtMoA |
| Transmission case bears moment of torsion | 2*89N.m |
| Heat exchanger area | 0.5m2 |
| Lubricating oil addition | 10L |
| Lubricating oil types | Middle load gear oil 220# |
The main-machine screw of 3. extruder of table and the design parameter of the simplified and simplified water cooling unit of mandrel, main frame
Main-machine screw and mandrel
| Screw rod material | W6Mo5Cr4V2A |
| Screw rod hardness range | HRC60-62 |
| Treated forms | Vacuum hardening |
| Mandrel material | 40CrNiMoA |
| Mandrel quenching and tempering hardness | HB300-350 |
| Connected mode | Spline |
Main frame cylinder
| Cylinder type | Bimetal wear resistant cylinder |
| Cylinder material | Bimetallic 45+ α 101A |
| Cylinder hardness range | HRC62-64 |
| Cylinder major diameter | L/D=4 |
| Barrel heater | Cast aluminium |
Cylinder water cooling unit
| Power of motor | 0.55KW. joins centrifugal water pump |
| Cyclic water tank volume | 30L |
| Water tank material | SS304 |
| Heat exchanger area | 1m2 |
| Cooling medium | Deionized water |
| Electromagnetic valve brand | Italian CEME |
Use IKV gear pump as follows as equipment, design parameter is increased：
The relevant information of table 4.IKV gear pump
Gear pumping system
| Brand | Angstrom kwell (Shanghai) Industrial Co., Ltd. |
| Solution pump type | IKV SP28/13 2.78CC |
The use of 450 millimeters of broadsheet die heads of the outstanding big mould enterprise manufacture in Shanghai is former, design parameter is as follows：
The design parameter of 5.450 millimeters of broadsheet die heads of table
Sheet die
Using the parameters of extruder, pressurized equipment, former on following central control system control device line, have
Body configuration is as follows：
The design parameter of 6. central control system of table
Control system
| Control mode | PLC touch screen control system |
| Mair motor converter | ABB |
| Temperature control module | Japanese Omron |
| Button, signal lighties and auxiliary reclay | Schneider |
| Catalyst and chopper | Schneider |
| Temperature element | 0-400 DEG C of K-type thermocouple range |
| Pressure transducer | First reach |
| Chain requirement | Standard |
All connected with flange and connecting tube in the middle of extruder, gear pump, sheet die, and guarantee that the temperature of junction is equal
Can be controlled in central control system by heating and cooling device.The putting in order as extruder of equipment>Gear pump>
Sheet die.
Specific operation process is as follows：
Step (1), be first turned on equipment main switch by central authorities control electronic box start, by each equipment be energized, by control
System is heated to equipment each several part, and machine barrel, bonding pad, gear pump, die head temperature are set to 120 DEG C, opens cooling water circulation system
System and vacuum pump.
Step (2), after equipment each several part reaches design temperature and temperature stabilization, by ready powder put into extrusion
Machine feeding hopper, also feeding intake to be carried out before the first step because material put into hopper after if not starting feeding machine material
Extruder barrel will not be entered.
Step (3), successively unlatching gear pump, main motor, 80 revs/min of engine speed, 30 revs/min of gear revolution speed
Clock.Generally engine speed more high then production efficiency is higher, and it is to ensure can be with higher to select 80 turns of engine speed
Efficiency and more rational load on host computers under the conditions of produce in the case of the heat of generation that rubs with screw rod of one side material relatively
Little, be not in the situation of material local temperature superelevation tolerable temperature, the on the other hand material conveying capacity phase with gear pump
Join；The reason for rotating speed of gear pump is using above-mentioned setting value is that generally the faster material of rotating speed is defeated to die head by gear pump
The unit interval conveying capacity that send is bigger, and the buffer brake that die head is produced is also bigger, the tolerance pressure of the gear pump that selects in this example
Power is up to 35 MPas, and when using above-mentioned parameter, maximum pressure can reach 32 MPas or so, approach the limit.
Step (4), unlatching feeding machine, set feeding rotating speed 8Hz, and raw material enters cylinder, and quilt under the drive of feeding machine
Screw combinations extrusion shearing is simultaneously fed forward.Feeding machine rotating speed more high then material enters the specific discharge of extruder barrel from hopper
Bigger, the load produced by main frame is bigger, and therefore the above-mentioned setting value of reasonable selection ensures to keep the safety in production in allowed band.
Step (5), two pressure value that is observed at any time before and after gear pump in doing so, to engine speed, tooth
The temperature of wheel revolution speed, rate of feeding and equipment each several part is adjusted at any time, it is ensured that the pressure value of material turnover gear pump all exists
Within safety range.After material is transported into die head, flow and from mould in the cavity of die internal rack-style diversion Design
Continuous sheet material is extruded as at lip slit, die lip opening can be controlled narrow by adjusting the upper and lower governor motion of die lip
The gap width of seam, the sheet material of the thickness required for producing, generally the interior pressure of the less mould in gap can be bigger, therefore
Larger material buffer brake can be produced born by gear pump, the therefore regulation to gap should consider that the pressure of gear pump is resistance to simultaneously
By scope.In this example, extrusion sheet thickness is to adopt above-mentioned main frame and gear pump, feeding machine and temperature when 0.5mm or so
Gear pump output pressure produced by degree setting value is 32 MPas or so.
Follow-up be rolled into film process is carried out for convenience, and the thickness of sheet material is unsuitable blocked up, because blocked up sheet material (is more than
Sheet material can 3mm) be caused to hardly result in sufficient preheating before carrying out being rolled into film process, simultaneously because thickness crosses conference in roller
The gap of pressure produces excessive accumulation, causes roll-in to process the unfavorable factor such as not smooth.
Step (6), the sheet material of extrusion are properly placed after being wound by manually or automatically winder or carry out rod pressure.By
Polishing and chromium plating process are passed through in the inner surface of die head, surface is that sheet surface can produce certain meat smooth mirror surface, after the extrusion
The visible schemochrome of eye, and color is with the different changes of angle is completely different with milky under original state.While sheet material thickness
Degree is uniform, and compact structure has preferable film-formation result when the operations such as roll-in film forming are carried out.
Embodiment 2
As different from Example 1, raw material is block, it is therefore desirable to which it is the relatively granule of small particle and fragment to crush block
The diameter of laggard material bin, granule and fragment should be not more than 5mm, smash block using high-speed mixing equipment, it is ensured that particle diameter is in 5mm
Hereinafter, it is beneficial to equipment filler, caking easily causes the idle running of feeding machine and the reduction of feeding efficiency greatly very much, and feeding is held
Continuous property and stability are impacted.
Embodiment 3
As different from Example 1, specific operation process is as follows：
Step (1), by ready powder put into extruder feeding hopper；
Step (2), open equipment main switch by central authorities control electronic box start, by each equipment be energized, by control system
Equipment each several part is heated, machine barrel, bonding pad, gear pump, die head temperature be set to 120 DEG C, open cooling water recirculation system with
And vacuum pump, other steps are identical with embodiment.
It should be noted that various embodiments above is only in order to illustrate technical scheme, rather than a limitation；Although
With reference to foregoing embodiments, the present invention is described in detail, it will be understood by those within the art that：Which is still
Technical scheme described in foregoing embodiments can be modified, or which part or all technical characteristic are carried out
Equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technical side
The scope of case.
Claims (10)
1. a kind of pre-treating technology of composite optical material, was carried out, it is characterised in that including following before sandwich is formed
Step：
Step（1）, composite optical material is dry after mix, using dry stirring mix homogeneously；
Step（2）, the composite optical material equipment of putting into production carried out material production and processing, composite optical material is mixed first
After conjunction, then through natural compression, finally extrude the shape for obtaining closely knit bubble-free suitable next step composite optical material production.
2. the pre-treating technology of composite optical material as claimed in claim 1, it is characterised in that：The step（2）In life
Product equipment includes extrusion equipment, former, and extrusion equipment is directly connected to former.
3. the pre-treating technology of composite optical material as claimed in claim 1, it is characterised in that：The step（2）In life
Product equipment also includes supercharging equipment, supercharging equipment connection extrusion equipment and former.
4. the pre-treating technology of composite optical material as claimed in claim 3, it is characterised in that：Input and product according to raw material
The direction order for going out, extrusion equipment as equipment line foremost, the cylinder of extrusion equipment foremost discharging opening by flange and
Connecting tube is connected to supercharging equipment, and supercharging equipment is connected to former by flange and connecting tube.
5. the pre-treating technology of composite optical material as claimed in claim 4, it is characterised in that：Extrusion equipment, supercharging equipment
Straight line should be remained along material flow direction with the axial axis of former.
6. the pre-treating technology of composite optical material as claimed in claim 5, it is characterised in that：The extrusion equipment, supercharging
Equipment, former can all realize accurate zonal control of the temperature in the range of 20-200 DEG C by the control of control system.
7. the pre-treating technology of composite optical material as claimed in claim 6, it is characterised in that：The extrusion equipment, supercharging
The work of equipment and former arranges maximum temperature and is less than 140 DEG C.
8. the pre-treating technology of composite optical material as claimed in claim 7, it is characterised in that：The extrusion equipment, supercharging
The work of equipment and former arranges temperature and is 80-130 DEG C.
9. the pre-treating technology of composite optical material as claimed in claim 1, it is characterised in that：The processing procedure of material is：
Extrusion equipment put into by material, enters after supercharging equipment from extrusion equipment, provides high pressure by supercharging equipment and pushes former, material
Expect to obtain being suitable for the shape of next step composite optical material production through former extrusion.
10. the pre-treating technology of composite optical material as claimed in claim 9, it is characterised in that：The material puts into extrusion
Before equipment, need to crush granule and the fragment for small particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610860345.3A CN106426626A (en) | 2016-09-28 | 2016-09-28 | Pretreatment process of composite optical materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610860345.3A CN106426626A (en) | 2016-09-28 | 2016-09-28 | Pretreatment process of composite optical materials |
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| Publication Number | Publication Date |
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| CN106426626A true CN106426626A (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610860345.3A Pending CN106426626A (en) | 2016-09-28 | 2016-09-28 | Pretreatment process of composite optical materials |
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Citations (6)
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Effective date of registration: 20180316 Address after: 519060 No. 18, No. 18, No. 1 (workshop) of Xiang Gong Road, Xiangzhou District, Zhuhai, Guangdong Applicant after: Zhuhai light Yu Technology Co. Ltd. Address before: 519060 Guangdong Province, Zhuhai city Xiangzhou District 46 254 building 1506 HUAFA new town Applicant before: Zhao Qibin |
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Application publication date: 20170222 |