CN106493892A - A kind of composite optical material pressure forming preparation method - Google Patents
A kind of composite optical material pressure forming preparation method Download PDFInfo
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- CN106493892A CN106493892A CN201610872849.7A CN201610872849A CN106493892A CN 106493892 A CN106493892 A CN 106493892A CN 201610872849 A CN201610872849 A CN 201610872849A CN 106493892 A CN106493892 A CN 106493892A
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- optical material
- pressure forming
- die cavity
- die
- forming preparation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
- B29C48/37—Gear pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Abstract
The present invention relates to a kind of composite optical material pressure forming preparation method, the optical material is polymer core shell structural nano microballoon, the optical material is entered in die cavity, by making the optical material that flowing to occur and then making the optical material, relative to the restriction face of the die cavity, shear flow occur, cause Nano microsphere in the position ordered arrangement near the mold cavity surface, produce obvious schemochrome.The solution of the present invention can not use PET and sandwich to carry out the production of material.The present invention can prepare the elastin stone material that different complicated shapes have obvious schemochrome, including tubing, wire rod, surfaces of complex shape material etc..
Description
Technical field
The invention belongs to field of material technology, is related to a kind of composite optical material pressure forming preparation method.
Background technology
Macromolecule protein stone is a kind of NEW TYPE OF COMPOSITE optical material, Pursiainen et al.（“Nanoparticle-
Tuned structural color from polymer opals " OpticsExpress, 2007,15：9553:）Discuss
It is incorporated to impact of the nanoparticle to the opaline optical property of the flexible polymer formed using core-shell aggregated particles, core-shell
The core of particle is formed by polystyrene, and external shell is formed by polyethyl acrylate, and the sequence of particle is by making two outsides
Particle between coating flows to realize under compression.Chris Finlayson et al. are in " 3D Bulk Ordering in
Research in Opals by Edge-Induced Rotational Shearing, Adv. Mat. 23,1540 (2011) "
It is clipped in the middle of two-layer PET film with core-shell structure polymer microballoon and is rolled into film and then by the pressure on wedge metal top
Power causes shear flow to obtain the regularly arranged preparation method to produce schemochrome of Nano microsphere；Announce in CN103534079 A
A kind of technology of preparing of macromolecule protein stone, the shearing produced by sandwich is prepared with core-shell structure polymer microballoon
Power makes microballoon be arranged in the structure of rule in laminar film, and then produces the opaline optical texture color of similar nature；
Christian Schaefer et al.（“Reversible light-, thermo-, and mechano-responsive
Elastomeric polymer opal films ", Chem. Mater. 2013,25,2309-2318）Interpolation is used
Nano particle and using uncrosslinked PS（Polystyrene）As the flexible polymer opal sandwich layer that core-shell aggregated particles are formed
Material flows into the preparation method of flexible polymer opal Thin Disk by upper and lower two flat board pressed materials.In said method
In, the method for being rolled into film and then preparing the regular material of micro-structural through cutting method is only applicable to prepare the soft of plane
Property opal optical thin film, and by way of upper and lower surface pressurization makes material flowing the elastin stone optical material mesh for preparing
Before be limited only to discoid material.
The technology of existing announcement mainly carries out the film production of material, and film thickness is produced between 40-500 microns
Film be planar materials, it is necessary to the optical thin film with schemochrome could be produced after roll-in-concussion shearing two-step process
Product, it is impossible to be directly produced film of the thickness more than 500 microns, can not produce other section bars with complex shape, tubing,
Wire rod, shield-like material etc..And announce existing technology, such as with two-layer PET clamp material make under upper lower platen material into
The technique of type has only carried out the preparation of thin rounded flakes, does not mention the material that can be used for suppressing other shapes.
Content of the invention
In order to overcome the deficiencies in the prior art, the present invention to provide a kind of composite optical material pressure forming preparation method.This
Invention can prepare the elastin stone material that different complicated shapes have obvious schemochrome, including tubing, wire rod, complicated shape
Surfacing etc..
The invention provides following technical scheme：
A kind of composite optical material pressure forming preparation method, the optical material be polymer core-shell structural nano microballoon, institute
State optical material to enter in die cavity, flowing occurs and then the optical material is made relative to the type by making the optical material
There is shear flow in the restriction face in chamber, cause Nano microsphere in the position ordered arrangement near the mold cavity surface, produce substantially
Schemochrome.
Material of the present invention without schemochrome, was formed after pressure forming fresh with stablizing before pressure forming
Mingguang City learn schemochrome surface, therefore pressure forming process not just forming process and also be optical effect produce and modulation mistake
Journey.
In such scheme preferably, the polymer core-shell structural nano microballoon is powder or bulk material.
In any of the above-described scheme preferably, the material mechanical strength of the die cavity is higher than the material.The optics
Material is placed into by automatic push or manually in the die cavity.
In any of the above-described scheme preferably, the optical material is sheared in the 0-2 micron thickness in the restriction face of being close to
Speed will exceed 0.5s-1.
It is preferably in any of the above-described scheme, the mode for making the optical material that flowing to occur is：By in the type
One end of the opening in chamber constantly conveys the optical material makes the material form pressure in the case of filling the die cavity, forces
The optical material is to unfilled interstitial flow inside another open end of the die cavity or the die cavity.
In any of the above-described scheme preferably, the die cavity is mould, and the optical material is put into extruder
Supercharging equipment being directed or through after dense extrusion and clamp-oning mould, the mould temperature is 80-130 DEG C, institute
Inner surface that mould contacted is stated with the optical material through smooth mirror surface process.
Through smooth mirror surface process to reduce surface roughness, make extrusion optical material that there is smooth finish surface, according to shaping mould
The design shape of tool, this kind of method can be with extruding pipe material, wire rod and fine sheets.
In any of the above-described scheme preferably, the supercharging equipment is Melt Pump, high-pressure pump and gear pump etc..
In any of the above-described scheme preferably, the smooth mirror surface is processed as the process such as plating, surface polishing.
It is preferably in any of the above-described scheme, the mode for making the material that flowing to occur is：By compressing the die cavity
Space, in the case of space is ever-reduced, force the optical material to flow.Mechanics mechanism such as assembling die.
In any of the above-described scheme preferably, the die cavity is the cavity that the male and female mold is formed, will be described concavo-convex
The die of mould is respectively placed on upper and lower two pieces parallel pressurization flat boards with punch, and the male and female mold temperature is 60-140 DEG C
Degree, the optical material is put in die described in bottom, makes the die and punch laminating, the built-in optics material
Material gap flowing under stress along the die and the punch is until the whole gap of filling forms required shape and has
Certain thickness.
Upper and lower two pieces of parallel pressurization flat boards are upper and lower two pieces of parallel planks, and this two boards is all to pressurize, or
Only one piece is that another piece of holding position that pressurizes is motionless.
In any of the above-described scheme preferably, the hardness and mechanical strength of the male and female mold material should be significantly larger than soft
The mechanical strength of property polymerase proteins stone.
In any of the above-described scheme preferably, the surface of the male and female mold should ensure that smooth.
In any of the above-described scheme preferably, pressurizeed up and down the stroke of flat board by control, makes the die and described
Punch is fitted gradually.
In any of the above-described scheme preferably, the stroke of the treadmill exercise of pressurization up and down should be controlled in two steps, and first
Walk from setting in motion to the surface difference contact optical material of the male and female mold, after stopping certain time, make the optics
Material is fully warmed-up, and then starting second step pressurization makes the optical material fully flow to form required shape.
In any of the above-described scheme preferably, the pressure of the applying should be greater than 5 MPas.
In any of the above-described scheme preferably, the pressure of the applying is 20-60 MPa.
The final thickness of optical material is controlled with the minimum clearance of mechanically locked upper/lower die.The design of concave-convex mold should keep away
Exempt from dead angle occur, shape should be with round and smooth angled transition as optimum.This kind of method is suitable for preparing various shield-like materials, convex-concave surface
Material and thin slice.
The non-open end inner surface of die cavity is referred to as the inner surface of restriction face, the inner surface of such as mould or tubular conduit；
By applying pressure to material, and material is limited under stress perpendicular to the flowing in the face of restriction by restricted boundary face, so as to increase
By force with the flowing for limiting face tangential direction parallel direction, make material, relative to restriction face, shear flow occur, cause Nano microsphere
In the position ordered arrangement near surface, obvious schemochrome is produced, obvious schemochrome is produced on the basis of shape.
The solution of the present invention can not use PET and sandwich to carry out the production of material.The present invention can prepare difference
Complicated shape has the elastin stone material of obvious schemochrome, including tubing, wire rod, surfaces of complex shape material etc..
Description of the drawings
Fig. 1 is that the one of a kind of composite optical material pressure forming preparation method of the invention is preferable to carry out middle utilization extrusion pressure
Former and process program simplified flowchart；
Fig. 2 is that a kind of the another of composite optical material pressure forming preparation method of the invention is preferable to carry out middle setting using hot-forming
Standby and process program simplified flowchart；
Fig. 3. the opal structural color bar that a kind of composite optical material pressure forming preparation method of the invention is obtained.
Specific embodiment
In order to further appreciate that the technical characteristic of the present invention, the present invention is explained in detail with reference to specific embodiment
State.Embodiment only has exemplary effect to the present invention, and not there is any restricted effect, those skilled in the art
The modification of any unsubstantiality that makes on the basis of the present invention, should all belong to protection scope of the present invention.
In the present invention, the raw material of composite optical material is through dry polymer core-shell structural nano microballoon powder or block
Shape material, main component be polystyrene, polyethyl acrylate, polymethyl methacrylate etc. and a small amount of crosslinking agent and other
Additive or other are material modified, basically identical with the material of institute's publicity in CN103534079 A.
Embodiment 1：
As shown in figure 1, micro- with polystyrene-poly methyl methacrylate-polyethyl acrylate " core-shell " structural polymer nanometer
Ball（Diameter 250nm）Powder is raw material, using 30 type double screw extruders, 50 MPas of supercharging tooth wheel pumps of highest output pressure, pipe
Material extrusion die, die head extrusion gap design 1 millimeter, 2 centimetres of length of shaping, and mould inner wall is through minute surface chromium plating process, mould
Extrusion the smooth of the edge is sharp, without zigzag under conditions of 50 times of amplifying observations.
Idiographic flow is as follows：
（1）Raw material is put into extruder through spout, raw material is clamp-oned supercharging tooth wheel pump with constant load by extruder；
（2）Material pressurization is clamp-oned die head by supercharging tooth wheel pump；
（3）Tubing is after die head extrusion through air-cooling moulding；
（4）Extruder barrel, booster pump, die head design temperature adopt 120 DEG C；
（5）The tube surfaces of extrusion have bright schemochrome.
According to design and the pressure degree of equipment of die head extruding pipe material thickness, tube material and tube wall thickness can be in 100-
10000 millimeters of adjustment.
With same equipment and technological process, pipe mold head is changed to other section bar mold heads, such as wire die head,
Elastin stone optical material wire rod and the bar with opal structural color can be produced, diameter range is in 0.1-1000 millimeters.
In the present embodiment, mould shape length has key effect, and sizing length is too short to cause material and tube wall shear stream
Dynamic irregular, weaken or destroy the formation of surface texture color, sizing length is typically not less than 2mm.
Embodiment 2：
The present embodiment as a example by being extruded into the bar with opal structural color, using with 1 identical technological process of example, squeeze
Go out machine, booster pump, using the bar mould head shown in Fig. 3.
Raw material is pumped into through booster pump, in filling full first
The effect of material behind segment type chamber due to constantly pumping into, the diameter as well as second segment die cavity are less than first paragraph die cavity, make
Material continuous accumulated pressure in first paragraph die cavity is obtained, mould is extruded by second segment die cavity in the case where pressure reaches certain value
Tool, formed Fig. 3 shown in each bar to heterochromatic feature opal structural color.Bar have each angle heterochromatic and
The characteristic such as discoloration under mechanically deform.
Embodiment 3：
As shown in Fig. 2 with extruded machine directly extrude closely knit with polystyrene-poly methyl methacrylate-polyacrylic acid
Ethyl ester " core-shell " structural polymer Nano microsphere（Diameter 250nm）For raw material, can be sheet material, a bit of bar or bulk
Material, with hot press as press-molding apparatus, to design the concavo-convex assembling die of production shell mould material as mould, prepares poly-
Compound elastin stone housing.
Idiographic flow is as follows：
（1）Assembling die is separately mounted on the upper lower platen of hot press, mould is heated to 120 DEG C by temperature control system.
Mould through smooth treatment, and need to be taken measures to ensure that the demoulding is smooth with the surface of material.
（2）To realize that ready quantitative raw material is put in lower mould
（3）Upper lower platen is pressurizeed, platen travel distance is controlled, is suspended after upper and lower mould inner surface starts contact material, is filled material
Divide heating.
（4）Final gap is determined by limit methods such as mechanical spacers between upper/lower die, so that it is determined that the material of compacting
Thickness after shaping.Pressure is continued to upper lower platen, is continued stroke, is made upper/lower die reach the proximal most position of spacing permission, make
In upper/lower die gap, constantly flowing stops material final molding up to stroke to material.Press uses 30 MPas of pressure.
（5）Stroke terminates rear holding position certain time so that material stable molding, then separates upper and lower mould, will shaping
Material release take out.
Embodiment 4：
With polystyrene-poly methyl methacrylate-polyethyl acrylate " core-shell " structural polymer Nano microsphere（Diameter
220nm）Powder is raw material, using 35 type double screw extruders, 50 MPas of supercharging tooth wheel pumps of highest output pressure, tube extrusion mould
Head, die head extrusion gap design 1.5 millimeters, and 2.5 centimetres of length of shaping, mould inner wall are extruded through minute surface chromium plating process, mould
Mouth the smooth of the edge is sharp, without zigzag under conditions of 50 times of amplifying observations.
Idiographic flow is as follows：
（1）Raw material is put into extruder through spout, raw material is clamp-oned supercharging tooth wheel pump with constant load by extruder；
（2）Material pressurization is clamp-oned die head by supercharging tooth wheel pump；
（3）Tubing is after die head extrusion through air-cooling moulding；
（4）Extruder barrel, booster pump, die head design temperature adopt 80 DEG C；
（5）The tube surfaces of extrusion have bright schemochrome.
According to design and the pressure degree of equipment of die head extruding pipe material thickness, tube material and tube wall thickness can be in 1-10 millis
Rice adjustment.
With same equipment and technological process, pipe mold head is changed to other section bar mold heads, such as wire die head,
Elastin stone optical material wire rod and the bar with opal structural color can be produced, diameter range is in 0.1-1000 millimeters.
In the present embodiment, mould shape length has key effect, and sizing length is too short to cause material and tube wall shear stream
Dynamic irregular, weaken or destroy the formation of surface texture color, sizing length is typically not less than 2mm.
Embodiment 5：
With polystyrene-poly methyl methacrylate-polyethyl acrylate " core-shell " structural polymer Nano microsphere（Diameter
250nm）Powder is raw material, using 30 type double screw extruders, 50 MPas of supercharging tooth wheel pumps of highest output pressure, tube extrusion mould
Head, die head extrusion gap design 1 millimeter, 2 centimetres of length of shaping, and mould inner wall is through minute surface chromium plating process, mould extrusion side
Edge is smooth sharp, without zigzag under conditions of 50 times of amplifying observations.
Idiographic flow is as follows：
（1）Raw material is put into extruder through spout, raw material is clamp-oned supercharging tooth wheel pump with constant load by extruder；
（2）Material pressurization is clamp-oned die head by supercharging tooth wheel pump；
（3）Tubing is after die head extrusion through air-cooling moulding；
（4）Extruder barrel, booster pump, die head design temperature adopt 120 DEG C；
（5）The tube surfaces of extrusion have bright schemochrome.
According to design and the pressure degree of equipment of die head extruding pipe material thickness, tube material and tube wall thickness can be in 1-10 millis
Rice adjustment.
With same equipment and technological process, pipe mold head is changed to other section bar mold heads, such as wire die head,
Elastin stone optical material wire rod and the bar with opal structural color can be produced, diameter range is in 0.1-1000 millimeters.
In the present embodiment, mould shape length has key effect, and sizing length is too short to cause material and tube wall shear stream
Dynamic irregular, weaken or destroy the formation of surface texture color, sizing length is typically not less than 2mm.
Embodiment 6：
With extruded machine directly extrude closely knit with polystyrene-poly methyl methacrylate-polyethyl acrylate " core-shell "
Structural polymer Nano microsphere（Diameter 230nm）For raw material, can be sheet material, a bit of bar or bulk material, with hot pressing
Machine is press-molding apparatus, to design the concavo-convex assembling die of production shell mould material as mould, prepares polymer flexibility egg
White stone housing.
Idiographic flow is as follows：
（1）Assembling die is separately mounted on the upper lower platen of hot press, mould is heated to 80 DEG C by temperature control system.Mould
Tool through smooth treatment, and need to be taken measures to ensure that the demoulding is smooth with the surface of material.
（2）To realize that ready quantitative raw material is put in lower mould.
（3）Upper lower platen is pressurizeed, platen travel distance is controlled, is suspended after upper and lower mould inner surface starts contact material, is made material
Material is fully heated.
（4）Final gap is determined by limit methods such as mechanical spacers between upper/lower die, so that it is determined that the material of compacting
Thickness after shaping.Pressure is continued to upper lower platen, is continued stroke, is made upper/lower die reach the proximal most position of spacing permission, make
In upper/lower die gap, constantly flowing stops material final molding up to stroke to material.Press uses 50 MPas of pressure.
（5）Stroke terminates rear holding position certain time so that material stable molding, then separates upper and lower mould, will shaping
Material release take out.
Embodiment 7：
With extruded machine directly extrude closely knit with polystyrene-poly methyl methacrylate-polyethyl acrylate " core-shell "
Structural polymer Nano microsphere（Diameter 250nm）For raw material, can be sheet material, a bit of bar or bulk material, with hot pressing
Machine is press-molding apparatus, to design the concavo-convex assembling die of production hemispherical shell section bar material as mould, prepares polymer
Elastin stone Loadings On Hemispherical Shell.
Idiographic flow is as follows：
（1）Assembling die is separately mounted on the upper lower platen of hot press, mould is heated to 130 DEG C by temperature control system.
Mould through smooth treatment, and need to be taken measures to ensure that the demoulding is smooth with the surface of material.
（2）To realize that ready quantitative raw material is put in lower mould.
（3）Upper lower platen is pressurizeed, platen travel distance is controlled, is suspended after upper and lower mould inner surface starts contact material, is made material
Material is fully heated.
（4）Final gap is determined by limit methods such as mechanical spacers between upper/lower die, so that it is determined that the material of compacting
Thickness after shaping.Pressure is continued to upper lower platen, is continued stroke, is made upper/lower die reach the proximal most position of spacing permission, make
In upper/lower die gap, constantly flowing stops material final molding up to stroke to material.Press uses 60 MPas of pressure.
（5）Stroke terminates rear holding position certain time so that material stable molding, then separates upper and lower mould, will shaping
Material release take out.
The method of the present invention is combined can also material and other materials, for example the additional PET film of upper and lower mould inner surface,
TPU film or hard shell etc., the mechanical strength of material should be greater than the mechanical strength of elastin stone in process.With
As a example by the flexible macromolecule opal with schemochrome is added to smooth, rounding off surface metal mobile phone shell outer surface, with
Metal hand casing takes the handling process of the easy demoulding as punch to die（Cover one layer of soft relatively thin PET film or
Smear very small amount releasing agent）, the technological process in example 2 is taken, after the completion of compacting, elastin stone is uniformly attached to mobile phone
On shell, the phone housing with opal structural color is obtained.
Existing thin film preparation process cannot produce piece with bright opal structural color of the thickness more than 500 microns
Material, bar, wire rod, tubing and with complex-curved surface.
Claims (10)
1. a kind of composite optical material pressure forming preparation method, the optical material are polymer core-shell structural nano microballoon,
The optical material is entered in die cavity, flowing is occurred and then makes the optical material relative to described by making the optical material
There is shear flow in the restriction face of die cavity, cause Nano microsphere in the position ordered arrangement near the mold cavity surface, produce bright
Aobvious schemochrome.
2. composite optical material pressure forming preparation method according to claim 1, it is characterised in that：The polymer
Core-shell structure Nano microsphere is powder or bulk material.
3. composite optical material pressure forming preparation method according to claim 1, it is characterised in that：The optical material
Shear rate will exceed 0.5s in the 0-2 micron thickness in the restriction face of being close to-1.
4. composite optical material pressure forming preparation method according to claim 1, it is characterised in that：Make the optics material
There is the mode of flowing in material：The optical material is constantly conveyed by one end of the opening in the die cavity fills out the material
Fill and pressure is formed in the case of the die cavity, force the optical material into another open end of the die cavity or the die cavity
The unfilled interstitial flow in portion.
5. composite optical material pressure forming preparation method according to claim 4, it is characterised in that：The die cavity is into
Pattern has, and the optical material is put into extruder directs or through supercharging equipment after dense extrusion and clamp-on shaping mould
Tool, the mould temperature are 80-130 DEG C, and the inner surface that the mould is contacted with the optical material is through smooth
Mirror process.
6. composite optical material pressure forming preparation method according to claim 5, it is characterised in that：The supercharging equipment
For Melt Pump, high-pressure pump or gear pump.
7. composite optical material pressure forming preparation method according to claim 5, it is characterised in that：The smooth mirror surface
It is processed as plating or surface polishing is processed.
8. composite optical material pressure forming preparation method according to claim 1, it is characterised in that：Send out the material
Giving birth to the mode for flowing is：By compressing the space of the die cavity, the optical material is forced in the case of space is ever-reduced
Flow.
9. composite optical material pressure forming preparation method according to claim 8, it is characterised in that：The die cavity is institute
The cavity of male and female mold formation is stated, the die of the male and female mold and punch are respectively placed at upper and lower two pieces parallel pressurization flat boards
On, the male and female mold temperature be 60-140 DEG C degree, the optical material is put in die described in bottom, make the die and
The punch laminating, the built-in optical material are flowed along the gap of the die and the punch under stress until filling
Whole gap forms required shape and there is certain thickness.
10. composite optical material pressure forming preparation method according to claim 8, it is characterised in that：The applying
Pressure should be greater than 5 MPas.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107696372A (en) * | 2017-10-12 | 2018-02-16 | 华中科技大学 | A kind of manufacturing process that High-quality transparent product is prepared based on photonic crystal elastomeric state method |
| CN113524734A (en) * | 2021-06-08 | 2021-10-22 | 正升环境科技股份有限公司 | Particle board forming method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2472987A (en) * | 2009-08-24 | 2011-03-02 | Cambridge Entpr Ltd | Composite optical materials, uses of composite optical materials and methods for the manufacture of composite optical materials |
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2016
- 2016-09-29 CN CN201610872849.7A patent/CN106493892A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2472987A (en) * | 2009-08-24 | 2011-03-02 | Cambridge Entpr Ltd | Composite optical materials, uses of composite optical materials and methods for the manufacture of composite optical materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107696372A (en) * | 2017-10-12 | 2018-02-16 | 华中科技大学 | A kind of manufacturing process that High-quality transparent product is prepared based on photonic crystal elastomeric state method |
| CN113524734A (en) * | 2021-06-08 | 2021-10-22 | 正升环境科技股份有限公司 | Particle board forming method |
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