CN103969723B - A kind of efficiently diffusing reflection sexual reflex film and preparation method thereof - Google Patents
A kind of efficiently diffusing reflection sexual reflex film and preparation method thereof Download PDFInfo
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Abstract
A kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body, described reflectance coating is the most internal is distributed microvesicle, and this reflectance coating body has diffusing reflection coating；Diffusing reflection coating is made up of following component: butanone: 20 mass parts；Ethyl acetate: 12 mass parts；Acrylate: 10 mass parts；Isocyanates: 1 mass parts；Big particle diameter diffusion particle: 1 ~ 5 mass parts, particle diameter 20 ~ 50 μm；Flatting silica: 0.5 ~ 5 mass parts.Its preparation process is: the preparation of A. reflectance coating body masterbatch；B. the preparation of resist blocking and that layer masterbatch；C. the preparation of biaxial stretching film；D. the preparation of diffusing reflection coating and coating.The efficient diffusing reflection white reflection film of the present invention has extremely low surface gloss and splendid diffusing reflection, thus reflecting properties is splendid.
Description
Technical field
The present invention relates to a kind of reflectance coating, and the preparation method of reflectance coating.
Background technology
Liquid crystal display (LCD, Liquid Crystal Display) has had become as current most common Display Technique.Because LCD has the advantages such as environmental protection, low power consuming, Low emissivity, picture be soft, so LCD would is that the main flow Display Technique in coming few decades.LCD is the display device of non-luminescent, needs to can be only achieved display function by backlight module, so the quality of backlight module performance can directly affect LCD and image quality.The main member of backlight module includes: light source, light guide plate, all kinds of blooming piece.
At present, LCD backlight module can be divided into side-light type and straight-down negative two kinds according to distribution of light sources position difference.For side-light type, down straight aphototropism mode set is more suitable for large scale liquid crystal display, it is easier to design adjusts the brightness uniformity realizing large-sized monitor, it is easier to reduce cost.But, in order to obtain uniform area source, it is desirable to down straight aphototropism mode set backlight cavity is thicker, the distance between LED and diffuser plate is relatively big (just i.e. needing certain light mixing distance can realize uniform area source).If down straight aphototropism mode set mixed light is not enough, arise that mura(hot spot) quality problem.Additionally, down straight aphototropism mode set does not have the feature that sidelight type backlight module is thin.The most existing reflectance coating needs the lifting improving its reflecting properties to realize other aspect of performances.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing reflectance coating, the present invention provides a kind of reflecting properties preferably efficient diffusing reflection sexual reflex film, and provides its preparation method.
The present invention solves the technical scheme of its technical problem: a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body, this internal microvesicle that is distributed of described reflectance coating, the back side of described reflectance coating body is provided with resist blocking and that layer, and the front of described reflectance coating body is provided with diffusing reflection coating；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 1 ~ 20 mass parts, particle diameter is 1 ~ 5 μm；
Polyethylene glycol as dispersing aid: 0.3 ~ 2 mass parts；
Poly(4-methyl-1-pentene): 5 ~ 20 mass parts；
Benzotriazole UV absorbers: 0. 1 ~ 5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0. 1 ~ 5 mass parts, particle diameter is 1 ~ 4 μm；
Antistatic additive: 0. 1 ~ 2 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Big particle diameter diffusion particle: 1 ~ 5 mass parts, particle diameter 20 ~ 50 μm；
Flatting silica: 0.5 ~ 5 mass parts.
Further, described big particle diameter diffusion ion is glass microballoon, and described flatting silica is silica flatting silica.
The preparation method of above-mentioned efficient diffusing reflection sexual reflex film, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, antistatic additive are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after two Melt distributors, flow to slit die head carry out coextrusion mold, obtain containing reflection mould body and the double-decker melt of resist blocking and that layer；
Double-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, big particle diameter diffusion particle, flatting silica are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
The another kind of scheme of the present invention is:
A kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body, described reflectance coating is the most internal is distributed microvesicle, it is characterised in that: the back side of described reflectance coating body and front are equipped with resist blocking and that layer, and a kind of one layer of resist blocking and that layer is provided with diffusing reflection coating；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 1 ~ 20 mass parts, particle diameter is 1 ~ 5 μm；
Polyethylene glycol as dispersing aid: 0.3 ~ 2 mass parts；
Poly(4-methyl-1-pentene): 5 ~ 20 mass parts；
Benzotriazole UV absorbers: 0. 1 ~ 5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0. 1 ~ 5 mass parts, particle diameter is 1 ~ 4 μm；
Antistatic additive: 0. 1 ~ 2 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Big particle diameter diffusion particle: 1 ~ 5 mass parts, particle diameter 20 ~ 50 μm；
Flatting silica: 0.5 ~ 5 mass parts.
Further, described big particle diameter diffusion ion is glass microballoon, and described flatting silica is silica flatting silica.
The preparation method of above-mentioned efficient diffusing reflection sexual reflex film, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, antistatic additive are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after three Melt distributors, flow to slit die head carry out coextrusion mold, obtain reflecting mould body and be sandwiched in the three-decker melt between two-layer resist blocking and that layer；
Three-decker melt flows on chilling roller, and three-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, big particle diameter diffusion particle, flatting silica are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the wherein one side of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
The beneficial effects of the present invention is: the efficient diffusing reflection white reflection film of the present invention has extremely low surface gloss and splendid diffusing reflection, thus reflecting properties is splendid, when sidelight type backlight module, it is easier to the brightness uniformity realizing light source side with light source far-end, or can apply to larger sized backlight module in the same circumstances；When down straight aphototropism mode set, can effectively reduce light mixing distance under the same conditions, it is possible to reduce the thickness of down straight aphototropism mode set.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention with three-decker.
Fig. 2 is the structural representation of the present invention with four-layer structure.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment one
With reference to Fig. 1, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 is provided with resist blocking and that layer 3, and the front of described reflectance coating body 1 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 10 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 1 mass parts；
Poly(4-methyl-1-pentene): 15 mass parts；
Benzotriazole UV absorbers: 3 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 2 mass parts, within particle diameter is 1 ~ 4 μ m；
Anionic antistatic agents: 1.5 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:3 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:2 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, anionic antistatic agents are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after two Melt distributors, flow to slit die head carry out coextrusion mold, obtain containing reflection mould body and the double-decker melt of resist blocking and that layer；
Double-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment two
With reference to Fig. 1, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 is provided with resist blocking and that layer 3, and the front of described reflectance coating body 1 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 1 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 1.5 mass parts；
Poly(4-methyl-1-pentene): 10 mass parts；
Benzotriazole UV absorbers: 0.1 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0.5 mass parts, within particle diameter is 1 ~ 4 μ m；
Cationic antistatic agent: 0.5 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:4 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:5 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, cationic antistatic agent are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after two Melt distributors, flow to slit die head carry out coextrusion mold, obtain containing reflection mould body and the double-decker melt of resist blocking and that layer；
Double-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment three
With reference to Fig. 1, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 is provided with resist blocking and that layer 3, and the front of described reflectance coating body 1 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 5 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 0.3 mass parts；
Poly(4-methyl-1-pentene): 20 mass parts；
Benzotriazole UV absorbers: 1 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0.1 mass parts, within particle diameter is 1 ~ 4 μ m；
Non-ionic antistatic agent: 2 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:1 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:1 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, non-ionic antistatic agent are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after two Melt distributors, flow to slit die head carry out coextrusion mold, obtain containing reflection mould body and the double-decker melt of resist blocking and that layer；
Double-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment four
With reference to Fig. 1, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 is provided with resist blocking and that layer 3, and the front of described reflectance coating body 1 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 20 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 2 mass parts；
Poly(4-methyl-1-pentene): 5 mass parts；
Benzotriazole UV absorbers: 0.5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 5 mass parts, within particle diameter is 1 ~ 4 μ m；
Anionic antistatic agents: 0.1 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:2 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:0.5 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, anionic antistatic agents are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after two Melt distributors, flow to slit die head carry out coextrusion mold, obtain containing reflection mould body and the double-decker melt of resist blocking and that layer；
Double-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment five
With reference to Fig. 1, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 is provided with resist blocking and that layer 3, and the front of described reflectance coating body 1 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 15 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 0.5 mass parts；
Poly(4-methyl-1-pentene): 8 mass parts；
Benzotriazole UV absorbers: 5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 1 mass parts, within particle diameter is 1 ~ 4 μ m；
Cationic antistatic agent: 1 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:5 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:3 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, cationic antistatic agent are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after two Melt distributors, flow to slit die head carry out coextrusion mold, obtain containing reflection mould body and the double-decker melt of resist blocking and that layer；
Double-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment six
With reference to Fig. 2, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 and front are equipped with resist blocking and that layer 3, and a kind of one layer of resist blocking and that layer 3 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 10 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 1 mass parts；
Poly(4-methyl-1-pentene): 15 mass parts；
Benzotriazole UV absorbers: 3 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 2 mass parts, within particle diameter is 1 ~ 4 μ m；
Anionic antistatic agents: 1.5 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:3 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:2 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, anionic antistatic agents are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after three Melt distributors, flow to slit die head carry out coextrusion mold, obtain reflecting mould body and be sandwiched in the three-decker melt between two-layer resist blocking and that layer；
Three-decker melt flows on chilling roller, and three-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment seven
With reference to Fig. 2, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 and front are equipped with resist blocking and that layer 3, and a kind of one layer of resist blocking and that layer 3 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 20 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 0.3 mass parts；
Poly(4-methyl-1-pentene): 8 mass parts；
Benzotriazole UV absorbers: 1 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0.1 mass parts, within particle diameter is 1 ~ 4 μ m；
Cationic antistatic agent: 0.1 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:1 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:1 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, cationic antistatic agent are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after three Melt distributors, flow to slit die head carry out coextrusion mold, obtain reflecting mould body and be sandwiched in the three-decker melt between two-layer resist blocking and that layer；
Three-decker melt flows on chilling roller, and three-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment eight
With reference to Fig. 2, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 and front are equipped with resist blocking and that layer 3, and a kind of one layer of resist blocking and that layer 3 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 1 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 0.5 mass parts；
Poly(4-methyl-1-pentene): 5 mass parts；
Benzotriazole UV absorbers: 0.5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 1 mass parts, within particle diameter is 1 ~ 4 μ m；
Non-ionic antistatic additive: 2 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:5 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:3 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, non-ionic antistatic agent are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after three Melt distributors, flow to slit die head carry out coextrusion mold, obtain reflecting mould body and be sandwiched in the three-decker melt between two-layer resist blocking and that layer；
Three-decker melt flows on chilling roller, and three-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment nine
With reference to Fig. 2, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 and front are equipped with resist blocking and that layer 3, and a kind of one layer of resist blocking and that layer 3 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 15 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 1.5 mass parts；
Poly(4-methyl-1-pentene): 20 mass parts；
Benzotriazole UV absorbers: 0.1 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0.5 mass parts, within particle diameter is 1 ~ 4 μ m；
Anionic antistatic agents: 1 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:2 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:5 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, anionic antistatic agents are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after three Melt distributors, flow to slit die head carry out coextrusion mold, obtain reflecting mould body and be sandwiched in the three-decker melt between two-layer resist blocking and that layer；
Three-decker melt flows on chilling roller, and three-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Embodiment ten
With reference to Fig. 2, a kind of efficiently diffusing reflection sexual reflex film, including reflectance coating body 1, microvesicle 2 in described reflectance coating body 1, is distributed, the back side of described reflectance coating body 1 and front are equipped with resist blocking and that layer 3, and a kind of one layer of resist blocking and that layer 3 is provided with diffusing reflection coating 4；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 5 mass parts, within particle diameter is 1 ~ 5 μ m；
Polyethylene glycol as dispersing aid: 2 mass parts；
Poly(4-methyl-1-pentene): 10 mass parts；
Benzotriazole UV absorbers: 5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 5 mass parts, within particle diameter is 1 ~ 4 μ m；
Cationic antistatic agent: 0.5 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Glass microballoon 5:4 mass parts, in particle diameter 20 ~ 50 μ m；
Silica flatting silica 6:0.5 mass parts.
Its preparation method, comprises the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, cationic antistatic agent are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after three Melt distributors, flow to slit die head carry out coextrusion mold, obtain reflecting mould body and be sandwiched in the three-decker melt between two-layer resist blocking and that layer；
Three-decker melt flows on chilling roller, and three-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C.Afterwards, glassy state slab employing longitudinal stretching machine is carried out longitudinal stretching, draw ratio is 3 ~ 4 times, transverse drawing mill is used to carry out cross directional stretch the most again, the draw ratio of cross directional stretch is more consistent than holding with longitudinal stretching, thus form biaxial stretching film, and in biaxial stretching film, form the microvesicle with TiO 2 particles as core；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, glass microballoon 5, silica flatting silica 6 are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
Claims (6)
1. an efficient diffusing reflection sexual reflex film, including reflectance coating body, described reflectance coating is the most internal is distributed microvesicle, it is characterised in that: the back side of described reflectance coating body is provided with resist blocking and that layer, and the front of described reflectance coating body is provided with diffusing reflection coating；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 1 ~ 20 mass parts, particle diameter is 0.1 ~ 5 μm；
Polyethylene glycol as dispersing aid: 0.3 ~ 2 mass parts；
Poly(4-methyl-1-pentene): 5 ~ 20 mass parts；
Benzotriazole UV absorbers: 0.01 ~ 5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0.01 ~ 5 mass parts, particle diameter is 1 ~ 4 μm；
Antistatic additive: 0.01 ~ 2 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Big particle diameter diffusion particle: 1 ~ 5 mass parts, particle diameter 20 ~ 50 μm；
Flatting silica: 0.5 ~ 5 mass parts.
2. efficiently diffusing reflection sexual reflex film as claimed in claim 1, it is characterised in that: described big particle diameter diffusion particle is glass microballoon, and described flatting silica is silica flatting silica.
3. an efficient diffusing reflection sexual reflex film, including reflectance coating body, described reflectance coating is the most internal is distributed microvesicle, it is characterised in that: the back side of described reflectance coating body and front are equipped with resist blocking and that layer, and a kind of one layer of resist blocking and that layer is provided with diffusing reflection coating；
Described reflectance coating body is made up of following component:
Polyethylene terephthalate: 100 mass parts；
TiO 2 particles: 1 ~ 20 mass parts, particle diameter is 1 ~ 5 μm；
Polyethylene glycol as dispersing aid: 0.3 ~ 2 mass parts；
Poly(4-methyl-1-pentene): 5 ~ 20 mass parts；
Benzotriazole UV absorbers: 0.1 ~ 5 mass parts；
Described resist blocking and that layer is made up of following component:
Polyethylene terephthalate: 100 mass parts；
Silicon dioxide granule: 0.1 ~ 5 mass parts, particle diameter is 1 ~ 4 μm；
Antistatic additive: 0.1 ~ 2 mass parts；
Described diffusing reflection coating is made up of following component:
Butanone: 20 mass parts；
Ethyl acetate: 12 mass parts；
Acrylate: 10 mass parts；
Isocyanates: 1 mass parts；
Big particle diameter diffusion particle: 1 ~ 5 mass parts, particle diameter 20 ~ 50 μm；
Flatting silica: 0.5 ~ 5 mass parts.
4. efficiently diffusing reflection sexual reflex film as claimed in claim 3, it is characterised in that: described big particle diameter diffusion particle is glass microballoon, and described flatting silica is silica flatting silica.
5. the preparation method of an efficiently diffusing reflection sexual reflex film as claimed in claim 1, it is characterised in that comprise the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, antistatic additive are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after two Melt distributors, flow to slit die head carry out coextrusion mold, obtain containing reflection mould body and the double-decker melt of resist blocking and that layer；
Double-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C；
Afterwards, glassy state slab employing longitudinal stretching machine being carried out longitudinal stretching, draw ratio is 3 ~ 4 times, uses transverse drawing mill to carry out cross directional stretch the most again, and the draw ratio of cross directional stretch is more consistent than keeping with longitudinal stretching, thus forms biaxial stretching film；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, big particle diameter diffusion particle, flatting silica are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the front of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
6. the preparation method of an efficiently diffusing reflection sexual reflex film as claimed in claim 3, it is characterised in that comprise the following steps:
A. the preparation of reflectance coating body masterbatch:
After polyethylene terephthalate, TiO 2 particles, polyethylene glycol, poly(4-methyl-1-pentene), benzotriazole UV absorbers are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain reflectance coating body masterbatch；
B. the preparation of resist blocking and that layer masterbatch:
After polyethylene terephthalate, silicon dioxide granule, antistatic additive are mixed according to proportioning, melt extruded by double screw extruder, cooling and dicing, obtain resist blocking and that layer masterbatch；
C. the preparation of biaxial stretching film:
Respectively reflection body masterbatch, resist blocking and that layer masterbatch are carried out fusion plastification by two single screw extrusion machines, after three Melt distributors, flow to slit die head carry out coextrusion mold, obtain reflecting mould body and be sandwiched in the three-decker melt between two-layer resist blocking and that layer；
Three-decker melt flows on chilling roller, and double-decker melt is quickly cooled to below its vitrification point on the chilling rod of uniform rotation and forms glassy state slab in uniform thickness, and the temperature of chilling rod is set as 20 DEG C；
Afterwards, glassy state slab employing longitudinal stretching machine being carried out longitudinal stretching, draw ratio is 3 ~ 4 times, uses transverse drawing mill to carry out cross directional stretch the most again, and the draw ratio of cross directional stretch is more consistent than keeping with longitudinal stretching, thus forms biaxial stretching film；
D. the preparation of diffusing reflection coating and coating:
Butanone, ethyl acetate, acrylate, isocyanates, big particle diameter diffusion particle, flatting silica are deployed into diffusing reflection glue in proportion, use nick version scraper for coating method by diffusing reflection glue-coating in the wherein one side of above-mentioned biaxial stretching film, obtain efficient diffusing reflection sexual reflex film after drying.
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| CN113752514A (en) * | 2021-09-03 | 2021-12-07 | 宁波东旭成新材料科技有限公司 | Preparation method of Mini-LED backlight module optical reflection film |
| CN114153017B (en) * | 2021-12-16 | 2023-08-15 | 云阳金田塑业有限公司 | Preparation method of illumination reflecting film |
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