CN203241559U - Antistatic self-cleaning light diffusion plate and preparation system thereof - Google Patents
Antistatic self-cleaning light diffusion plate and preparation system thereof Download PDFInfo
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- CN203241559U CN203241559U CN2013202635876U CN201320263587U CN203241559U CN 203241559 U CN203241559 U CN 203241559U CN 2013202635876 U CN2013202635876 U CN 2013202635876U CN 201320263587 U CN201320263587 U CN 201320263587U CN 203241559 U CN203241559 U CN 203241559U
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Abstract
The utility model relates to an antistatic self-cleaning light diffusion plate and a preparation system thereof. The light diffusion plate is a composite structure with three layers, comprising a surface layer and a middle layer; wherein the surface layer is composed of an antistatic material with a resistivity between 107 and 1011, and the middle layer is composed of a reflective material with a light transmittance greater than 80% and a haze greater than 85%. The preparation system comprises two or three single-screw extruder and a three-layer composite machine head, wherein each single-screw extruder is connected to the three-layer composite machine head individually. The light diffusion plate provided achieves high light transmittance and good antistatic self-cleaning capabilities as well as long-term stability in performance and low preparation costs, and thus applies to various relevant product areas in need of good antistatic and self-cleaning capabilities. The preparation system provided is simple in structure, easy for operation, suitable for continuous production, low in economic costs, and thus suitable for promotion and applications.
Description
Technical field
The utility model relates to light diffusing sheet and preparing technical field thereof, relates in particular to a kind of antistatic self-cleaning light diffusing sheet and preparation system thereof.
Background technology
Current, enhancing along with environmental protection and energy saving consciousness, the LED lamp is used increasingly extensive because of its significant energy-saving effect, but there is the strong easily dazzling defective of light in the LED lamp because the luminous energy of its generation is high when using, for avoiding the luminous energy loss and make the LED lamp wiring become soft, usually design adding LED lamp lampshade.Yet, these lampshades in use all exist to some extent the light soften not, pile up a large amount of dusts because of Electrostatic Absorption after luminous energy loss, especially long-term the use and cause defects to increase the weight of.
At present, the lampshade that adopts generally is made by similar materials such as polystyrene resin (PS), polymethylmethacrylate (PMMA), polycarbonate (PC), PC, PMMA, these material transmittances of PS are high, although effectively avoided the luminous energy loss but light is effectively reached be fit to the soft degree of human eye, still there is the optical energy loss problem that causes because of the Electrostatic Absorption dirt accumulation after strong and dazzling defective and long-term the use in the LED lamp wiring.
For this reason, to PC, PMMA or PS carry out processing modified material and in succession occur in recent years, that carries out is processing modifiedly mainly undertaken by the auxiliary agent that adds some mineral-type, employed auxiliary agent is such as silicon dioxide, barium sulphate, add these inorganic nanoparticles auxiliary agents, light can carry out many times anaclasis by the surface of these molecules and reach the light diffusion, the i.e. effect of the even light of performance makes light soft, but when using the material of this type of processing modified mistake, because light can not penetrate these inorganic nanoparticles, light penetration power and greatly being weakened, cause larger luminous energy loss, simultaneously, also there is the defective that to avoid Electrostatic Absorption accumulation dust to affect transmittance loss luminous energy.
In addition, also promising avoid defects and take at PC, add organic light diffusing agent in these materials of PMMA or PS and carry out processing modified technology, a kind of high-fog-degree and high-transparency LED lamp tube material and preparation method thereof is disclosed among the utility model patent ZL201010218327.8, mainly be as matrix take PC, added PMMA microballon class light diffusing agent, color and luster protective agent and other auxiliary agents, by melt blending, extruding pelletization; This utility model is having certain progress aspect the mist degree of photodiffusion material and the transmittance, but can't avoid in the use procedure Electrostatic Absorption to pile up the impact that dust produces, and is not suitable for long-term the use and promotes.Utility model patent ZL201010140129.4 provides a kind of high light flux, anti-glare polycarbonate and preparation method thereof, at first prepare polycarbonate resin light diffusion master batch, add polycarbonate resin and auxiliary agent on the basis of polycarbonate resin light diffusion master batch again, mainly be take PC as matrix, adopt one or both compound light diffusing agent auxiliary agents of spherical methylsiloxane resin or crosslinked methyl methacrylate microballoon; This utility model has been eliminated dazzling dazzle to a certain extent effectively, light loss is low, luminous flux is high, and still, still there is the Electrostatic Absorption problem in it, has a strong impact on its long-term effect of using.Utility model patent ZL201110151541.0 also discloses a kind of LED light fixture flame-retarding light-diffusing polycarbonate resin composite and preparation method thereof, Effective Raise the fire resistance of light diffusion PC material, similarly, can't avoid Electrostatic Absorption and light loss problem.In addition, utility model patent ZL200880106372.5 has announced resin composition for light diffusion, light diffusing sheet and manufacture method thereof, although this utility model has proposed the antistatic problem of relevant light diffusing sheet, but the structure of its individual layer and manufacture method, effectively do not solve antistatic problem, do not obtain preferably effect yet.
Therefore, need badly and research and develop out a kind of material that can effectively prevent Electrostatic Absorption, and, it is applied in the photodiffusion material, make the light diffusing sheet that obtains efficiently to avoid Electrostatic Absorption, prevent that fully dust cut and dirt accumulation from appearring in the light diffusing sheet surface, thereby reach soft not dazzling and the translucent effect that long-term maintenance is good of light, and then significantly reduce the luminous energy loss.
The utility model content
The purpose of this utility model is, problem for the prior art existence, a kind of antistatic self-cleaning light diffusing sheet and preparation system thereof are provided, light diffusing sheet with the anti-static material preparation is provided, in the time of the high light transmittance of realization effective guarantee light diffusing sheet and other correlated performances, dust cut and the dirt accumulation of fully avoiding the light diffusing sheet surface to occur because of static, make the light of dispersing through this light diffusing sheet soft not dazzling and be beneficial to this light diffusing sheet and keep long-term good translucent effect thereby reach, and then effectively reduce the luminous energy loss.
The technical scheme that the utility model is dealt with problems is: a kind of anti-static material, be made of matrix resin, light diffusing agent, antistatic agent, antioxidant, light stabilizer and spreading agent, the mass ratio m (matrix resin) of each component: m (light diffusing agent): m (antistatic agent): m (antioxidant): m (light stabilizer): m (spreading agent) is: (100): (0.2～2): (0.2～10): (0.1～0.8): (0.1～0.8): (0.1～1); Its resistivity is 10
7～10
11
Preferably, the mass ratio m (matrix resin) of each component of the utility model anti-static material: m (light diffusing agent): m (antistatic agent): m (antioxidant): m (light stabilizer): m (spreading agent) is: (100): (0.5～1): (1～5): (0.5～0.8): (0.5～0.8): (0.5～1).
Further, described matrix resin is polystyrene resin, polymethylmethacrylate or polycarbonate; Described light diffusing agent is the one or more kinds of combinations in inorganic light diffusing agent and the organic light diffusing agent; Described antistatic agent is anti-quiet dose of cationic antistatic agent, anionic antistatic agents or nonionic.
Preferably, described inorganic light diffusing agent can be microspheroidal silicon dioxide, microspheroidal barium sulphate and/or microspheroidal calcium carbonate etc., described organic light diffusing agent can be silicone microsphere polymkeric substance and/or acrylic acid microsphere polymer etc., wherein, the particle diameter of each described inorganic light diffusing agent and organic light diffusing agent all is preferably 1 μ m-400 μ m.
Preferably, described cationic antistatic agent can be quaternary ammonium alkyl, Lin Huo phosphonium salt etc., wherein, take trihydroxyethyl methyl quaternary amine methylsulfuric acid ester, dimethyl hydroxyethyl stearmide for propyl group quaternary amine dihydric phosphate and trihydroxyethyl methyl quaternary amine methylsulfuric acid ester as preferred; Described anionic antistatic agents can be the alkali metal salt of alkyl sulfonic acid, the alkali metal salt of phosphoric acid and/or the alkali metal salt of aminodithioformic acid etc., wherein, and take alkyl sodium sulfonate as preferred; Described nonionic resists quiet dose can be ethoxylated fat family alkyl amine and/or tristerin etc.
Preferably, described antioxidant can be that antioxidant, phosphorus are that antioxidant and sulphur are one or more the combination in the antioxidant for phenol; Described light stabilizer is that UV absorbers, hindered amine are one or more the combination in light stabilizer, photomask agent and the quencher; Described spreading agent is one or more the combination in liquid paraffin, macromolecule wax, stearate soap and the glyceryl monostearate.
Further, in the utility model, in the quality ratio range of above-mentioned each component, can also add as required other auxiliary agents, antioxidant can also add other auxiliary antioxidants as described, and described light stabilizer can also add other fill-in light stabilizing agents.
Further, the preparation of the utility model anti-static material adopts common mixed melting to realize, wherein, preferred operation is, these components of required matrix resin, light diffusing agent, antistatic agent, antioxidant, light stabilizer and spreading agent are mixed in the reactor high speed, then, under continuous stirring condition, under 100 ℃～300 ℃, be heated to abundant melting mixing even, carry out again moulding, cooling and collection.Preferably, the temperature of heating and melting is 160 ℃～290 ℃ in preparation the utility model anti-static material process, further, along with the variation of each component concentration ratio, preferred 180 ℃, 195 ℃, 205 ℃, 225 ℃, 240 ℃ and 260 ℃.
Performance performance according to the utility model anti-static material, the utility model anti-static material can be as the product preparation that prevents Electrostatic Absorption, enhancing self-cleaning function, this series products such as lampshade, display pannel etc., the base material that these products are commonly used is light diffusing sheet, therefore, the utility model also provides a kind of self-cleaning light diffusing sheet, and described self-cleaning light diffusing sheet is made by the above-mentioned anti-static material of the utility model.
Preferably, for fully ensureing light transmission and the economical with materials of the self-cleaning light diffusing sheet of the utility model, and antistatic adsorption effect key is that surface performance shows, therefore, the self-cleaning light diffusing sheet of the utility model is designed to three-layer combined structure, be that described self-cleaning light diffusing sheet comprises top layer and middle layer, described top layer is made of anti-static material described in the utility model; Described middle layer is made of matrix resin, light diffusing agent, antioxidant, light stabilizer, spreading agent, wherein, the mass ratio m (matrix resin) of each component in described middle layer: m (light diffusing agent): m (antioxidant): m (light stabilizer): m (spreading agent) is: (95～99.8): (0.2～1): (0.1～0.8): (0.1～0.8): (0.1～1).
Preferably, described antistatic self-cleaning light diffusing sheet is three-layer combined structure, comprises top layer and middle layer, and described top layer is 10 by resistivity
7～10
11Anti-static material consist of, described middle layer reaches the reflecting material that reaches more than 85% with mist degree 80% or more by transmittance and consists of.
Preferably, the mass ratio m (matrix resin) of each component of middle layer of the self-cleaning light diffusing sheet of the utility model: m (light diffusing agent): m (antioxidant): m (light stabilizer): m (spreading agent) is: (95～99): (0.5～1): (1～3): (0.5～0.8): (0.5～0.8): (0.5～1).
Further, has microstructure on the top layer of described self-cleaning light diffusing sheet, the shape of described microstructure is unrestricted, one of be preferably in grooved, ball-type, spheroid shape, parabola and the hyperboloid or two or more combinations, can also for the various polygons such as hexagon or with the combination of above-mentioned each shape; Wherein, the setting of described microstructure is good evenly to be distributed as, and is beneficial to the homogeneity of enhanced light scattering, thereby is beneficial to the comfort level that improves human eye perceives.
Further, the self-cleaning light diffusing sheet of the utility model can also only be designed to a normal top layer that contacts or easily produce Electrostatic Absorption with dust to be made of the anti-static material that the utility model provides as required, occur in the erratic application in dust distribution and Electrostatic Absorption, then can be designed to as required all top layers and consist of by the anti-static material that the utility model provides; For the microstructure setting on the top layer, then main in order to improve the light diffusion effect of the self-cleaning light diffusing sheet of the utility model,, can arrange on each top layer as required or the surface part that only strengthens the light diffusion effect at needs arranges described microstructure for this reason.
Further, in the interlayer material components of described self-cleaning light diffusing sheet, described matrix resin is polystyrene resin, polymethylmethacrylate or polycarbonate; Described light diffusing agent is the one or more kinds of combinations in inorganic light diffusing agent and the organic light diffusing agent.Preferably, described inorganic light diffusing agent can be microspheroidal silicon dioxide, microspheroidal barium sulphate and/or microspheroidal calcium carbonate etc., described organic light diffusing agent can be for such as the silicone microsphere polymkeric substance such as polymethyl siloxane and/or acrylic acid microsphere polymer etc., wherein, the particle diameter of each described inorganic light diffusing agent and organic light diffusing agent all is preferably 1 μ m-400 μ m; Described antioxidant is that phenol is that antioxidant, phosphorus are that antioxidant and sulphur are one or more the combination in the antioxidant; Described light stabilizer is that UV absorbers, hindered amine are one or more the combination in light stabilizer, photomask agent and the quencher; Described spreading agent is one or more the combination in liquid paraffin, macromolecule wax, stearate soap and the glyceryl monostearate.
Further, in light diffusing sheet gross thickness of the present invention, the shared ratio of the thickness in described middle layer is 65%～90%, and the shared ratio of the thickness on described top layer is 10%～35%, and concrete sheet metal thickness needs to adjust according to the actual product application requirements.
The utility model also provides a kind of method for preparing above-mentioned self-cleaning light diffusing sheet further, comprises the steps:
(1) preparation of skin-material master batch and intermediate layer material master batch
1.1 the weight proportion by skin-material takes by weighing matrix resin, light diffusing agent, antistatic agent, antioxidant, light stabilizer and spreading agent, mixes;
1.2 the weight proportion by intermediate layer material takes by weighing matrix resin, light diffusing agent, antioxidant, light stabilizer, spreading agent, mixes;
1.3 the raw mix of gained in step 1.1 and the step 1.2 is put into respectively in the loading hopper of double screw extrusion machine, is melt extruded granulation;
(2) preparation of self-cleaning light diffusing sheet
2.1 the skin-material master batch and the intermediate layer material master batch that make in the described step 1.3 are joined respectively in the loading hopper of single screw extrusion machine, by the moulding of coextru-lamination technology, make self-cleaning light diffusing sheet.
Further, in described step (2), also comprise step 2.2, the pre-profiling light diffusing sheet that makes in the described step (2.1) is impressed by roller micro-embossing machine, obtain the surface with the self-cleaning light diffusing sheet of microstructure.
Preferably, in described step 1.3, the head temperature of each double screw extrusion machine is 195 ℃～285 ℃, the screw speed of each double screw extrusion machine is 100r/min-400r/min, and the temperature setting of respectively distinguishing of each double screw extrusion machine is respectively: district's temperature is 165 ℃～200 ℃, two district's temperature are 170 ℃～220 ℃, three district's temperature are 175 ℃～230 ℃, four district's temperature are 180 ℃～240 ℃, five district's temperature are 185 ℃～245 ℃, six district's temperature are 190 ℃～260 ℃, seven district's temperature are 190 ℃～270 ℃, eight district's temperature are 195 ℃～270 ℃, nine district's temperature are 195 ℃～290 ℃.
Preferably, in described step 2.1, the head temperature of each single screw extrusion machine is 195 ℃～285 ℃, the screw speed of each single screw extrusion machine is 10r/min～70r/min, and the temperature setting of respectively distinguishing of each single screw extrusion machine is respectively: district's temperature is that 165 ℃～240 ℃, two district's temperature are that 180 ℃～280 ℃, three district's temperature are 200 ℃～290 ℃.
Preferably, in described step 2.2, described roller micro-embossing machine comprises driving rolls and carries out traction-driven impression roller by described driving rolls, described impression roller surface is provided with microstructural mold, the temperature of described impression roller is 30 ℃～150 ℃, and the actuating speed of described driving rolls is 2m/min～10m/min.
Preferably, after described step 2.1 finishes, make gained pre-profiling light diffusing sheet enter the handling procedure of step 2.2 with the fastest speed, because when gained pre-profiling light diffusing sheet during at high temperature, easily form firm microstructure on its top layer, namely allow the pre-profiling light diffusing sheet of step 2.1 gained directly enter in the described roller micro-embossing machine, make the microstructure transfer printing that impresses on the roller surface to the pre-profiling light diffusing sheet, thereby must arrive the self-cleaning light diffusing sheet of moulding that the top layer has microstructure.
The utility model also provides a kind of preparation system that can realize above-mentioned preparation method's self-cleaning light diffusing sheet, comprise two or three single screw extrusion machines, three layers of composite machine head, wherein, described each single screw extrusion machine is connected with described three layers of composite machine head respectively, described each single screw extrusion machine comprises the loading hopper that is connected and barrel and the motor that is connected successively, coupling shaft, screw rod, and described barrel is provided with heating collar outward.
Further, the preparation system of described self-cleaning light diffusing sheet also comprises roller micro-embossing machine, and wherein, described three layers of composite machine head and described roller micro-embossing machine are in mating connection.
Further, described roller micro-embossing machine comprises driving rolls and carries out traction-driven impression roller by described driving rolls, and described impression roller surface is provided with microstructural mold.
Further, the periphery of described screw rod is provided with helicla flute.
Further, the quantity of described impression roller is more than two, is preferably 2～3; Preferably, when described impression roller is two, be provided with microstructural mold at least one impression roller, remaining impression roller is as driving rolls; When described impression roller is three, be provided with microstructural mold on the impression roller in the middle of being positioned at, microstructural mold be not set as driving rolls on two other impression roller.Preferably, described roller micro-embossing machine is provided with that micro-embossing is two rolls, and namely can impress by two impression rollers, thereby be beneficial to the speed of accelerating preparation.
Further, the utility model preparation system also comprises traction wheel, as the gathering-device of traction light diffusing sheet.
Preferably, described three layers of composite machine head are beneficial to form the three-layer type light diffusing sheet and select for requiring.
Self-cleaning light diffusing sheet preparation described in the utility model can also be carried out mutually compound preparation by the outer plated film of coextru-lamination technology, altogether injection, lamination, the method such as bonding; Wherein, the microstructure setting on the top layer of described self-cleaning light diffusing sheet can also prepare by the outer methods such as micro-embossing, microstructure injection, microstructured embossing of extruding of roller micro-embossing machine imprinting moulding.
In the utility model, applied each component raw material source is more in the preparation of described anti-static material and self-cleaning light diffusing sheet, described matrix resin, light diffusing agent, antistatic agent, antioxidant, light stabilizer and spreading agent etc. all can be by commercially available acquisitions, such as the CM211 type polymethylmethacrylate (PMMA) of commercially available matrix resin Taiwan Qi Mei company production, the L-1250Y type PC that Japan Supreme Being people produces, the ethoxylated fat family alkyl amine antistatic agent 520 that the Yongsheng plasticizing of Linan, Hangzhou is produced, the light diffusing agent polymethyl siloxane polymkeric substance KS-200C that Korea S Cologne company produces, the phenol of BASF production is that antioxidant 1010 and phosphorus are irgasfos 168 etc.
Anti-static material surface resistivity described in the utility model is tested according to the GB/T1410-2006 standard; During light diffusing sheet described in the utility model detected, transmittance and mist degree carried out according to the GB/T2410-2008 standard, and surface resistivity is carried out according to the GB/T1410-2006 standard, and through above-mentioned detection, the resistivity of anti-static material of the present utility model reaches 10
7Above, has outstanding antistatic property, the resistivity of the self-cleaning light diffusing sheet of the utility model that makes of anti-static material remains unchanged thus, anti-static material stable performance of the present utility model is described, and the preparation that is used for light diffusing sheet can embody and keep the resistivity of self fully, thereby makes prepared light diffusing sheet show antistatic absorption and self-cleaning effect; Moreover, the performance test results of the self-cleaning light diffusing sheet of the utility model shows, transmittance reaches more than 80% and mist degree reaches more than 85%, make it have high diffusion effect, thereby on the light diffusing sheet surface that adequately protects, effectively avoid dust cut that Electrostatic Absorption causes and dirt accumulation, realization highly self-cleaning in, make the light of dispersing through this light diffusing sheet soft not dazzling, strengthen the long-time stability of translucent effect, significantly reduce the luminous energy loss, significantly strengthen the environmental protection and energy saving effect; The preparation method of the self-cleaning light diffusing sheet of the utility model, with optimizing integration of dual-screw-stem machine and single-screw machine, by controlling each handling procedure is accurate, the method that impresses efficient combination with co-extrusion modling and microstructure makes product, whole process operation is simple, financial cost is low, is suitable for industrial mass production and uses.
Compared with prior art, the beneficial effects of the utility model are:
1, anti-static material provided by the utility model is not reported, and it also is showed no report as the purposes of light diffusing sheet and with light diffusing sheet and the preparation method of its preparation, the high resistivity of anti-static material described in the utility model, can effectively realize using the product of this material to have significant electrostatic prevention effect and self-cleaning usefulness, and, raw material is easy to get, and preparation cost is low, is suitable in each relevant product scope application that needs electrostatic prevention, improves self-cleaning property;
2, self-cleaning light diffusing sheet provided by the utility model, can be in the high light transmittance of realizing the effective guarantee light diffusing sheet and good his correlated performances such as mechanical property, the light diffusing sheet surface adequately protects, dust cut and the dirt accumulation of effectively avoiding Electrostatic Absorption to cause, realize the height self-cleaning effect, simultaneously, make the light of dispersing through this light diffusing sheet soft not dazzling, thereby strengthened the long-time stability of translucent effect, significantly reduced the luminous energy loss; Be suitable for applying in associated materials fields such as lampshade, display pannels;
3, the preparation system of the self-cleaning light diffusing sheet that provides of the utility model takes full advantage of single screw extrusion machine, and structure optimization is simple to operate, is suitable for continuous system and makes, and financial cost is low, is suitable for applying.
Description of drawings
Fig. 1 is the perspective view of the self-cleaning light diffusing sheet of the utility model;
Fig. 2 is the vertical view that the utility model one side top layer has the self-cleaning light diffusing sheet of microstructure;
Fig. 3 is the side view that the utility model one side top layer has the self-cleaning light diffusing sheet of microstructure;
Fig. 4 is the side view that all there is the self-cleaning light diffusing sheet of microstructure on two top layers about the utility model;
Fig. 5 is the standby system architecture schematic diagram of two rollings of the self-cleaning light diffusing sheet of the utility model one side top layer with microstructure;
Fig. 6 is the standby system architecture schematic diagram of three rollings of the self-cleaning light diffusing sheet of the utility model one side top layer with microstructure;
Fig. 7 all has the standby system architecture schematic diagram of two rollings of the self-cleaning light diffusing sheet of microstructure for top layer up and down.
Shown in the figure: the 1-motor; The 2-coupling shaft; The 3-loading hopper; The 4-screw rod; 5-impresses roller; The diffuser plate of 6-pre-profiling; The 7-heating collar; The 8-driving rolls; The 9-traction wheel; Three layers of composite machine head of 10-; The 11-microstructure; The A-top layer; The B-middle layer; The A-top layer.
Embodiment
Below by embodiment specifically describe more in detail the utility model anti-static material, a kind of self-cleaning light diffusing sheet of providing based on the purposes of the utility model anti-static material and preparation method thereof, but the utility model is not subjected to any restriction of embodiment.
Below all corresponding two kinds of situations of self-cleaning light diffusing sheet among each embodiment, namely the top layer is provided with microstructure and does not establish the situation of microstructure, and has correspondingly carried out respectively performance test, checks for convenient contrast, all is listed in the same form.
The utility model anti-static material, take by weighing each component by each component shown in the table 1 and content proportioning, mix in the reactor high speed, then, under stirring condition constantly, under 230 ℃, be heated to abundant melting mixing even, carry out again moulding, cooling and collection.The resistivity of gained anti-static material is tested according to the GB/T1410-2006 standard, and concrete outcome is as shown in table 1.
In the preparation of above-mentioned the utility model anti-static material, the temperature of heating and melting can be set to 100 ℃～300 ℃, and is specifically full and uniform as standard to reach melting mixing.
As shown in Figure 1 to Figure 3, a kind of self-cleaning light diffusing sheet of being made by above-mentioned anti-static material for by two top layer A and the compound three-layer type lamination layer structure that consists of of middle layer B, is evenly distributed with a plurality of semisphere microstructures 11 on a top layer A therein; Described top layer A is made of anti-static material described in the utility model; Described middle layer B is made of matrix resin, light diffusing agent, antioxidant, light stabilizer, spreading agent.
The concrete preparation method of self-cleaning light diffusing sheet described in the utility model comprises the steps:
(1) preparation of skin-material master batch and intermediate layer material master batch
1.1 take by weighing each component of skin-material by table 1, mix;
1.2 take by weighing each component of intermediate layer material by table 1, mix;
1.3 the raw mix of gained in step 1.1 and the step 1.2 is put into respectively in the loading hopper of double screw extrusion machine, is melt extruded granulation; Wherein, the head temperature of each double screw extrusion machine is 245 ℃, the screw speed of each double screw extrusion machine is 320r/min, and the temperature setting of respectively distinguishing of each double screw extrusion machine is respectively: district's temperature is that 200 ℃, two district's temperature are that 210 ℃, three district's temperature are that 220 ℃, four district's temperature are that 220 ℃, five district's temperature are that 230 ℃, six district's temperature are that 240 ℃, seven district's temperature are that 240 ℃, eight district's temperature are that 245 ℃, nine district's temperature are 245 ℃;
(2) preparation of self-cleaning light diffusing sheet
2.1 the skin-material master batch and the intermediate layer material master batch that make in the described step 1.3 are joined respectively in the loading hopper of single screw extrusion machine, by co-extrusion modling, make the self-cleaning light diffusing sheet of pre-profiling, the self-cleaning light diffusing sheet of gained pre-profiling is three layers structure; Wherein, the head temperature of each single screw extrusion machine is 240 ℃, and the screw speed of each single screw extrusion machine is 30r/min, and the temperature setting of respectively distinguishing of each single screw extrusion machine is respectively: district's temperature is that 230 ℃, two district's temperature are that 240 ℃, three district's temperature are 245 ℃;
2.2 the pre-profiling light diffusing sheet that makes in the described step 2.1 is impressed by roller micro-embossing machine, wherein, described roller micro-embossing machine comprises driving rolls and carries out traction-driven impression roller by described driving rolls, described impression roller surface is provided with microstructural mold, the temperature of described impression roller is 90 ℃, and the actuating speed of described driving rolls is 6.8m/min; Make at last the self-cleaning light diffusing sheet of moulding, the self-cleaning light diffusing sheet product of gained moulding is the self-cleaning light diffusing sheet of three-layer type that surface as shown in Figures 1 to 3 has microstructure, and wherein, two A layers are the top layer, the B layer is the middle layer, the semisphere microstructure that has impression to form on the A layer of B layer one side.
In the Preparation Example of the self-cleaning light diffusing sheet of above-mentioned the utility model:
The microstructural mold that described impression roller surface is provided with is semisphere, can also carry out according to actual needs other shape settings, thereby make the top layer A layer of a side of described light diffusing sheet have different microstructures, described microstructure can also be for one of in grooved, spheroid shape, parabola and the hyperboloid or two kinds and two or more combinations, perhaps be the various polygons such as hexagon or with the combination of above-mentioned each shape;
To associated temperature related in the above-mentioned steps and speed setting, regulate and control according to needs of production, concrete modification scope is: in described step 1.3, the head temperature of each double screw extrusion machine is 195 ℃～285 ℃, the screw speed of each double screw extrusion machine is 100r/min-400r/min, and the temperature setting of respectively distinguishing of each double screw extrusion machine is respectively: district's temperature is 165 ℃～200 ℃, two district's temperature are 170 ℃～220 ℃, three district's temperature are 175 ℃～230 ℃, four district's temperature are 180 ℃～240 ℃, five district's temperature are 185 ℃～245 ℃, six district's temperature are 190 ℃～260 ℃, seven district's temperature are 190 ℃～270 ℃, eight district's temperature are 195 ℃～270 ℃, nine district's temperature are 195 ℃～290 ℃; In described step 2.1, the head temperature of each single screw extrusion machine is 195 ℃～285 ℃, the screw speed of each single screw extrusion machine is 10r/min～70r/min, and the temperature setting of respectively distinguishing of each single screw extrusion machine is respectively: district's temperature is that 165 ℃～240 ℃, two district's temperature are that 180 ℃～280 ℃, three district's temperature are 200 ℃～290 ℃; In described step 2.2, the temperature of described impression roller is 30 ℃～150 ℃, and the actuating speed of described driving rolls is 2m/min～10m/min.
Particularly, the preparation of the above-mentioned self-cleaning light diffusing sheet of the utility model can be finished by following self-cleaning light diffusing sheet preparation system, as shown in Figure 5, a kind of preparation system of self-cleaning light diffusing sheet, comprise two single screw extrusion machines, three layers of composite machine head 10, roller micro-embossing machine, wherein, described two single screw extrusion machines are connected with described three layers of composite machine head 10 respectively, described three layers of composite machine head 10 are connected with described roller micro-embossing machine, described each single screw extrusion machine comprises the loading hopper 3 that is connected and barrel and the motor 1 that is connected successively, coupling shaft 2, screw rod 4, described barrel is provided with heating collar 7 outward.
As shown in Figure 5, in above-mentioned preparation system, described roller micro-embossing machine comprises driving rolls 8 and carries out traction-driven impression roller 5 by described driving rolls 8, described impression roller 5 surfaces are provided with microstructural mold, described impression roller 5 lip-deep microstructural molds are the semisphere microstructure, can also be set to according to actual needs other shapes; The periphery of described screw rod 4 is provided with helicla flute; Described three layers of composite machine head 10 are beneficial to form the three-layer type light diffusing sheet; The utility model preparation system also comprises traction wheel, as the gathering-device of traction light diffusing sheet.
As shown in Figure 5, particularly, use the preparation flow that the self-cleaning light diffusing sheet preparation system of above-mentioned the utility model carries out self-cleaning light diffusing sheet as follows: each single screw extrusion machine drives control screw rod 4 by motor 1 by coupling shaft 2 and rotates, rotation along with screw rod 4, the material that is added feeding cylinder by loading hopper 3 is fed forward constantly along the helicla flute direction of screw rod 4, in this course of conveying, the material that advances is constantly by heating collar 7 heating of barrel periphery, simultaneously, screw rod 4 and material, barrel and storeroom be also constantly because friction produces shearing friction heat, thus make material in course of conveying gradually melting be viscous state; Then, the material of each single-screw machine is pooled in three layers of composite machine head 10 and carries out extrusion molding, makes pre-profiling light diffusing sheet 6; Then, along with pre-profiling light diffusing sheet 6 enters roller micro-embossing machine, when the self-cleaning light diffusing sheet 6 of pre-profiling enters gap between the roller 5 of driving rolls 8 and impression, adjust adjusting screw nut, it is close to driving rolls 8 that driving rolls 8 promotes impression roller 5, impressing thus roller 5 exerts pressure to the self-cleaning light diffusing sheet 6 of pre-profiling, thereby make the microstructural mold pattern transfer that impresses on the roller 5 to pre-profiling light diffusing sheet 6, after cooling, the light diffusing sheet of moulding carries out rolling by traction wheel 9, the self-cleaning light diffusing sheet of three-layer type that products obtained therefrom has the semisphere microstructure for the surface.
Preparation for the above-mentioned self-cleaning light diffusing sheet of the utility model can also be finished by preparation system as shown in Figure 6, basic structure setting and preparation flow are with the relevant foregoing description that Fig. 5 is carried out, different is: in Fig. 6, the quantity of single screw extrusion machine is three, need make each layer of diffuser plate the corresponding material master batch that uses enter respectively in the variant single screw extrusion machine and move; In this preparation system, roller micro-embossing machine adopts three rollers to impress microstructure, and the three is upper, middle and lower settings of arranging, and the roller in the middle of being positioned at is the impression roller 5 with microstructural mold, and the roller on both sides is driving rolls 8 about being positioned at; If when the roller on both sides up and down be impression roller with microstructural mold, the roller in the middle of being positioned at was driving rolls, moulding process is together according to the described moulding process of Fig. 5.
At this, be further described, the self-cleaning light diffusing sheet of being made by above-mentioned anti-static material for the utility model also can be prepared into the situation that microstructure 11 is not established on the top layer, the basic structure of the self-cleaning light diffusing sheet of this kind situation, preparation method and preparation system are same as above, different is: do not comprise that step (2.2) impresses treatment process to the top layer of pre-profiling light diffusing sheet, namely directly cools off collection after step (2.1) makes the light diffusing sheet of pre-profiling; The preparation system that adopts does not comprise roller micro-embossing machine, and three layers of composite machine head 10 directly are connected with traction wheel 9, namely make pre-profiling light diffusing sheet 6 by the cooling directly carry out rolling by traction wheel 9.
In addition, the self-cleaning light diffusing sheet of being made by above-mentioned anti-static material for the utility model also can be prepared into the situation that microstructure 11 is all established on as shown in Figure 4 top layer, both sides, the basic structure of the self-cleaning light diffusing sheet of this kind situation, preparation method and preparation system are same as above, different is: as shown in Figure 7, driving rolls 8 surfaces also are provided with the double action that microstructure plays impression and drives, in the top layer impression treatment process of step (2.2) to the pre-profiling light diffusing sheet, impression roller 5 and driving rolls 8 are exerted pressure to two top layers of the self-cleaning light diffusing sheet 6 of pre-profiling and are carried out the microstructure impression.
The self-cleaning light diffusing sheet that i.e. surface under prepared above-mentioned two kinds of situations is established microstructure and do not established microstructure carries out respectively Performance Detection, and specifically detection method is as follows:
Transmittance and mist degree: carry out according to the GB/T2410-2008 standard, utilize CM-3600A type spectral photometric colour measuring meter, the lighting source of selection is pulse xenon lamp, and the illumination bore of selection (LAV diameter phi) is 25.4cm, the test wavelength scope is 360nm～740nm, and the wavelength interval of measurement is 10nm;
Surface resistivity: carry out according to the GB/T1410-2006 standard.
The results are shown in Table 1 to what prepared self-cleaning light diffusing sheet carried out Performance Detection, wherein, a side top layer arranges microstructure and top layer, both sides, and that the performance performance of self-cleaning light diffusing sheet of microstructure is set is identical, unifiedly represents with one group of the performance test results.
A kind of anti-static material, preparation and detection method are with embodiment 1, and wherein, the temperature of heating and melting can be set to 100 ℃, and each component and content proportioning, testing result see Table 1.
Extremely shown in Figure 7 such as Fig. 1, a kind of self-cleaning light diffusing sheet of being made by above-mentioned anti-static material, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 1, and each component and content proportioning, testing result see Table 1, wherein:
In described step 1.3, the head temperature of each double screw extrusion machine is 195 ℃, the screw speed of each double screw extrusion machine is 100r/min, and the temperature setting of respectively distinguishing of each double screw extrusion machine is respectively: district's temperature is that 165 ℃, two district's temperature are that 170 ℃, three district's temperature are that 175 ℃, four district's temperature are that 180 ℃, five district's temperature are that 185 ℃, six district's temperature are that 190 ℃, seven district's temperature are that 190 ℃, eight district's temperature are that 195 ℃, nine district's temperature are 195 ℃;
In described step 2.1, the head temperature of each single screw extrusion machine is 195 ℃, the screw speed of each single screw extrusion machine is 10r/min, and the temperature setting of respectively distinguishing of each single screw extrusion machine is respectively: district's temperature is that 165 ℃, two district's temperature are that 180 ℃, three district's temperature are 200 ℃;
In described step 2.2, the temperature of described impression roller is 30 ℃, and the actuating speed of described driving rolls is 2m/min.
At this, the self-cleaning light diffusing sheet of being made by above-mentioned anti-static material for the utility model also can be prepared into the situation that microstructure 11 is not established on the top layer with embodiment 1, each component of the basic structure of the self-cleaning light diffusing sheet of this kind situation and content proportioning, testing result see Table 1, and its preparation method and preparation system are described with embodiment 1.
A kind of anti-static material, preparation and detection method are with embodiment 1, and wherein, the temperature of heating and melting can be set to 300 ℃, and each component and content proportioning, testing result see Table 1.
Extremely shown in Figure 7 such as Fig. 1, a kind of self-cleaning light diffusing sheet of being made by above-mentioned anti-static material, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 1, and each component and content proportioning, testing result see Table 1, wherein:
In described step 1.3, the head temperature of each double screw extrusion machine is 285 ℃, the screw speed of each double screw extrusion machine is 400r/min, and the temperature setting of respectively distinguishing of each double screw extrusion machine is respectively: district's temperature is that 200 ℃, two district's temperature are that 220 ℃, three district's temperature are that 230 ℃, four district's temperature are that 240 ℃, five district's temperature are that 245 ℃, six district's temperature are that 260 ℃, seven district's temperature are that 270 ℃, eight district's temperature are that 270 ℃, nine district's temperature are 290 ℃;
In described step 2.1, the head temperature of each single screw extrusion machine is 285 ℃, the screw speed of each single screw extrusion machine is 70r/min, and the temperature setting of respectively distinguishing of each single screw extrusion machine is respectively: district's temperature is that 240 ℃, two district's temperature are that 280 ℃, three district's temperature are 290 ℃;
In described step 2.2, the temperature of described impression roller is 150 ℃, and the actuating speed of described driving rolls is 10m/min.
At this, the self-cleaning light diffusing sheet of being made by above-mentioned anti-static material for the utility model also can be prepared into the situation that microstructure 11 is not established on the top layer with embodiment 1, each component of the basic structure of the self-cleaning light diffusing sheet of this kind situation and content proportioning, testing result see Table 1, and its preparation method and preparation system are described with embodiment 1.
A kind of anti-static material, preparation and detection method are with embodiment 1, and wherein, the temperature of heating and melting can be set to 260 ℃, and each component and content proportioning, testing result see Table 1.
Extremely shown in Figure 7 such as Fig. 1, a kind of self-cleaning light diffusing sheet of being made by above-mentioned anti-static material, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 1, and each component and content proportioning, testing result see Table 1, wherein:
In described step 1.3, the head temperature of each double screw extrusion machine is 265 ℃, the screw speed of each double screw extrusion machine is 350r/min, and the temperature setting of respectively distinguishing of each double screw extrusion machine is respectively: district's temperature is that 195 ℃, two district's temperature are that 210 ℃, three district's temperature are that 215 ℃, four district's temperature are that 220 ℃, five district's temperature are that 225 ℃, six district's temperature are that 235 ℃, seven district's temperature are that 240 ℃, eight district's temperature are that 250 ℃, nine district's temperature are 270 ℃;
In described step 2.1, the head temperature of each single screw extrusion machine is 265 ℃, the screw speed of each single screw extrusion machine is 60r/min, and the temperature setting of respectively distinguishing of each single screw extrusion machine is respectively: district's temperature is that 225 ℃, two district's temperature are that 245 ℃, three district's temperature are 275 ℃;
In described step 2.2, the temperature of described impression roller is 125 ℃, and the actuating speed of described driving rolls is 8.2m/min.
At this, the self-cleaning light diffusing sheet of being made by above-mentioned anti-static material for the utility model also can be prepared into the situation that microstructure 11 is not established on the top layer with embodiment 1, each component of the basic structure of the self-cleaning light diffusing sheet of this kind situation and content proportioning, testing result see Table 1, and its preparation method and preparation system are described with embodiment 1.
A kind of anti-static material, preparation and detection method are with embodiment 1, and wherein, the temperature of heating and melting can be set to 180 ℃, and each component and content proportioning, testing result see Table 1.
Extremely shown in Figure 7 such as Fig. 1, a kind of self-cleaning light diffusing sheet of being made by above-mentioned anti-static material, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 1, and each component and content proportioning, testing result see Table 1, wherein:
In described step 1.3, the head temperature of each double screw extrusion machine is 225 ℃, the screw speed of each double screw extrusion machine is 200r/min, and the temperature setting of respectively distinguishing of each double screw extrusion machine is respectively: district's temperature is that 195 ℃, two district's temperature are that 190 ℃ ℃, three district's temperature are that 195 ℃, four district's temperature are that 198 ℃, five district's temperature are that 200 ℃, six district's temperature are that 210 ℃, seven district's temperature are that 210 ℃, eight district's temperature are that 215 ℃, nine district's temperature are 220 ℃;
In described step 2.1, the head temperature of each single screw extrusion machine is 220 ℃, the screw speed of each single screw extrusion machine is 25r/min, and the temperature setting of respectively distinguishing of each single screw extrusion machine is respectively: district's temperature is that 190 ℃, two district's temperature are that 210 ℃, three district's temperature are 225 ℃;
In described step 2.2, the temperature of described impression roller is 70 ℃, and the actuating speed of described driving rolls is 5m/min.
At this, the self-cleaning light diffusing sheet of being made by above-mentioned anti-static material for the utility model also can be prepared into the situation that microstructure 11 is not established on the top layer with embodiment 1, each component of the basic structure of the self-cleaning light diffusing sheet of this kind situation and content proportioning, testing result see Table 1, and its preparation method and preparation system are described with embodiment 1.
A kind of anti-static material, preparation and detection method are with embodiment 1, and wherein, each component and content proportioning, testing result see Table 2.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 1, and each component and content proportioning, testing result see Table 2.
A kind of anti-static material, preparation and detection method are with embodiment 2, and wherein, each component and content proportioning, testing result see Table 2.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 2, and each component and content proportioning, testing result see Table 2.
A kind of anti-static material, preparation and detection method are with embodiment 3, and wherein, each component and content proportioning, testing result see Table 2.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 3, and each component and content proportioning, testing result see Table 2.
A kind of anti-static material, preparation and detection method are with embodiment 4, and wherein, each component and content proportioning, testing result see Table 2.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 4, and each component and content proportioning, testing result see Table 2.
A kind of anti-static material, preparation and detection method are with embodiment 5, and wherein, each component and content proportioning, testing result see Table 2.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 5, and each component and content proportioning, testing result see Table 2.
A kind of anti-static material, preparation and detection method are with embodiment 1, and wherein, each component and content proportioning, testing result see Table 3.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 1, and each component and content proportioning, testing result see Table 3.
Embodiment 12
A kind of anti-static material, preparation and detection method are with embodiment 2, and wherein, each component and content proportioning, testing result see Table 3.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 2, and each component and content proportioning, testing result see Table 3.
Embodiment 13
A kind of anti-static material, preparation and detection method are with embodiment 3, and wherein, each component and content proportioning, testing result see Table 3.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 3, and each component and content proportioning, testing result see Table 3.
Embodiment 14
A kind of anti-static material, preparation and detection method are with embodiment 4, and wherein, each component and content proportioning, testing result see Table 3.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 4, and each component and content proportioning, testing result see Table 3.
Embodiment 15
A kind of anti-static material, preparation and detection method are with embodiment 5, and wherein, each component and content proportioning, testing result see Table 3.
By the self-cleaning light diffusing sheet that above-mentioned anti-static material is made, the preparation system of its structure composition and preparation method thereof and employing is with embodiment 5, and each component and content proportioning, testing result see Table 3.
Shown in table 1, table 2 and table 3, by the testing result of the various embodiments described above as can be known, the resistivity of anti-static material of the present utility model is identical with the surface resistivity of the self-cleaning light diffusing sheet of the utility model, and wherein, surface resistivity is up to 10
11Antistatic property is remarkable, this is that existing anti-static material is beyond one's reach far away, the any product that does not also have to reach this kind effect in the existing light diffusing sheet occurs, and the obtained remarkable result of the utility model can make the product expression such as applied light diffusing sheet go out obviously efficient antistatic absorption and self-cleaning effect; Moreover, in the performance test results of the self-cleaning light diffusing sheet of the utility model, transmittance and mist degree are simultaneously up to more than 88%, thereby on the light diffusing sheet surface that adequately protects, effectively avoid dust cut that Electrostatic Absorption causes and dirt accumulation, realization highly self-cleaning in, make the light of dispersing through this light diffusing sheet soft not dazzling, strengthen the long-time stability of translucent effect, significantly reduce the luminous energy loss, significantly strengthen the environmental protection and energy saving effect; The preparation method of the self-cleaning light diffusing sheet of the utility model, with optimizing integration of dual-screw-stem machine and single-screw machine, by controlling each handling procedure is accurate, the method that impresses efficient combination with co-extrusion modling and microstructure makes product, whole process operation is simple, financial cost is low, is suitable for industrial mass production and uses.
The utility model is not limited to above-mentioned embodiment, those skilled in the art make to any apparent improvement of above-mentioned embodiment or change, can not exceed the protection domain of design of the present utility model and claims.
Table 1
Table 2
Table 3
Claims (7)
1. antistatic self-cleaning light diffusing sheet, it is characterized in that: described antistatic self-cleaning light diffusing sheet is three-layer combined structure, comprises top layer and middle layer, and described top layer is 10 by resistivity
7～10
11Anti-static material consist of, described middle layer reaches the reflecting material that reaches more than 85% with mist degree 80% or more by transmittance and consists of.
2. the preparation system of an antistatic self-cleaning light diffusing sheet claimed in claim 1, it is characterized in that: comprise two or three single screw extrusion machines, three layers of composite machine head, wherein, described each single screw extrusion machine is connected with described three layers of composite machine head respectively, described each single screw extrusion machine comprises the loading hopper and barrel and the motor that is connected successively, coupling shaft and screw rod that is connected, and is provided with heating collar outside described barrel.
3. preparation system according to claim 2, it is characterized in that: the periphery of described screw rod is provided with helicla flute.
4. according to claim 2 or 3 described preparation systems, it is characterized in that: the preparation system of described self-cleaning light diffusing sheet also comprises roller micro-embossing machine, and wherein, described three layers of composite machine head and described roller micro-embossing machine are in mating connection.
5. preparation system according to claim 4 is characterized in that: described roller micro-embossing machine comprises driving rolls and carries out traction-driven impression roller by described driving rolls, and described impression roller surface is provided with microstructural mold.
6. preparation system according to claim 5, it is characterized in that: the quantity of described impression roller is more than two.
7. preparation system according to claim 6, it is characterized in that: the quantity of described impression roller is 2～3.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529555A (en) * | 2013-10-28 | 2014-01-22 | 四川省宜宾普什集团3D有限公司 | Product capable of realizing 360-degree watching of naked-eye 3D images and production method of product |
| CN103709571A (en) * | 2013-12-20 | 2014-04-09 | 上海日之升新技术发展有限公司 | Photodiffusion modified PMMA (polymethyl methacrylate) material and preparation method thereof |
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2013
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529555A (en) * | 2013-10-28 | 2014-01-22 | 四川省宜宾普什集团3D有限公司 | Product capable of realizing 360-degree watching of naked-eye 3D images and production method of product |
| CN103529555B (en) * | 2013-10-28 | 2016-03-02 | 四川省宜宾普什集团3D有限公司 | Goods and the manufacture method thereof of 360 degree of viewing bore hole 3D renderings can be realized |
| CN103709571A (en) * | 2013-12-20 | 2014-04-09 | 上海日之升新技术发展有限公司 | Photodiffusion modified PMMA (polymethyl methacrylate) material and preparation method thereof |
| CN103709571B (en) * | 2013-12-20 | 2016-07-06 | 上海日之升新技术发展有限公司 | A kind of light diffusional modification PMMA material and preparation method thereof |
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