CN105199371A - High-transparency TPU thin film for light guide plate material and preparation method of high-transparency TPU thin film - Google Patents
High-transparency TPU thin film for light guide plate material and preparation method of high-transparency TPU thin film Download PDFInfo
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Abstract
The invention provides a high-transparency TPU (thermoplastic polyurethane) thin film for a light guide plate material and a preparation method of the high-transparency TPU thin film. The TPU thin film for the light guide plate material is prepared by utilizing 70 to 90 parts by weight of TUP particles, 10 to 20 parts by weight of epoxy resin, 5 to 8 parts by weight of poly carbodiimide, 25 to 40 parts by weight of polycarbonate particles, 15 to 25 parts by weight of K resin and 10 to 20 parts by weight of antioxidant; the transparency of the prepared TPU thin film is 95 to 98 percent through cooperation among all the components and a synergistic effect among the components; the optical property is excellent, the TPU thin film has good hydrolysis resistance, the hardness is 70-75A which is moderate, the tensile strength is 59-65Mpa, and the tear strength is 130-135Mpa, good mechanical performances are obtained, the TPU thin film can be applied to the field of functional thin films, and the application prospect is wide.
Description
Technical field
The invention belongs to light guide panel material field, relate to a kind of light guide panel material TPU film and preparation method thereof, particularly relate to a kind of light guide panel material high transparency TPU film and preparation method thereof.
Background technology
TPU (Thermoplasticpolyyrethane, thermoplastic polyurethane) is a kind of novel organic polymer synthetic materials, and properties is excellent, can replace rubber, soft polyvinyl chloride material PVC.TPU has excellent physicals, such as wear resistance, and screen resilience is all better than conventional polyurethanes PU, PVC, and ageing resistance is better than rubber, can be described as the optimal material of alternative PVC and PU, is called novel polymer material in the world.
Based on the various excellent properties of TPU, its purposes is very extensive, but the application in light guide panel material, is usually subject to a definite limitation because of its transparency, and some scholars are devoted to the transparency improving TPU film at present.
CN104193957A discloses a kind of transparent TPU film and preparation method thereof, and described TPU film comprises following component by weight: the polyether glycol of 20-30 part, the polyester polyol of 25-40 part, the polyisocyanate compound of 30-40 part and the mixture of chain extenders of 5 ~ 7 parts; Batch process two-step approach and film-blowing process is adopted to obtain Polyurethane Thermoplastic Elastomer film.Although the TPU film that this invention obtains has the transmittance of more than 95%, the much higher hard of this film.
Therefore, in this area, expect to obtain a kind of TPU film with high-clarity and good over-all properties that can be used for light guide panel material.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of light guide panel material TPU film and preparation method thereof, be especially to provide a kind of light guide panel material high transparency TPU film and preparation method thereof.TPU film provided by the invention has high-clarity, and optical property is good, and has good mechanical property, can be used for light guide panel material.
For reaching this object, the present invention by the following technical solutions:
The invention provides a kind of light guide panel material TPU film, described TPU film prepares primarily of the raw material of following weight part:
In the raw material of light guide panel material TPU film of the present invention, the consumption of described TPU particle is 70-90 weight part, such as 70 weight parts, 72 weight parts, 74 weight parts, 75 weight parts, 78 weight parts, 80 weight parts, 82 weight parts, 84 weight parts, 86 weight parts, 88 weight parts or 90 weight parts.
Preferably, described TPU particle is polyester type TPU particle and/or polyether-type TPU particle.
In the raw material of light guide panel material TPU film of the present invention, the consumption of described epoxy resin is 10-20 weight part, such as 10 weight parts, 11 weight parts, 12 weight parts, 13 weight parts, 14 weight parts, 15 weight parts, 16 weight parts, 17 weight parts, 18 weight parts, 19 weight parts or 20 weight parts.
Preferably, described epoxy resin is the mixture of a kind of in bisphenol A type epoxy resin, brominated bisphenol a type epoxy resin or phenol aldehyde type epoxy resin or at least two kinds.
In the raw material of light guide panel material TPU film of the present invention, the consumption of described polycarbodiimide is 5-8 weight part, such as 5 weight parts, 5.3 weight parts, 5.5 weight parts, 5.8 weight parts, 6 weight parts, 6.3 weight parts, 6.5 weight parts, 6.8 weight parts, 7 weight parts, 7.3 weight parts, 7.5 weight parts, 7.8 weight parts or 8 weight parts.
In the raw material of light guide panel material TPU film of the present invention, the consumption of described polycarbonate pellets is 25-40 weight part, such as 25 weight parts, 27 weight parts, 30 weight parts, 32 weight parts, 34 weight parts, 35 weight parts, 37 weight parts, 38 weight parts, 39 weight parts or 40 weight parts.
Polycarbonate of the present invention is water white transparency, heat-resisting, shock resistance, has well optical, the transparency that the adding of polycarbonate can strengthen TPU film and optical.
In the raw material of light guide panel material TPU film of the present invention, the consumption of described K glue is 15-25 weight part, such as 15 weight parts, 16 weight parts, 17 weight parts, 18 weight parts, 19 weight parts, 20 weight parts, 21 weight parts, 22 weight parts, 23 weight parts, 24 weight parts or 25 weight parts.
K glue of the present invention is styrene-butadiene copolymer (SB), has the good transparency, glossiness and shock-resistance.
Polycarbonate pellets and K glue can act synergistically in the present invention, strengthen the optical and transparency of TPU film.
In the raw material of light guide panel material TPU film of the present invention, the consumption of described oxidation inhibitor is 10-20 weight part, such as 10 weight parts, 11 weight parts, 12 weight parts, 13 weight parts, 14 weight parts, 15 weight parts, 16 weight parts, 17 weight parts, 18 weight parts, 19 weight parts or 20 weight parts.
Preferably, described oxidation inhibitor is the mixture of any one or at least two kinds in antioxidant 1010, antioxidant 1076, antioxidant 264, oxidation inhibitor TPP or antioxidant TNP.
On the other hand, the invention provides the preparation method of light guide panel material TPU film as described in relation to the first aspect, said method comprising the steps of:
(1) TPU particle, epoxy resin, polycarbodiimide, polycarbonate pellets, K glue and oxidation inhibitor are mixed;
(2) extrude and obtain described light guide panel material TPU film.
In the preparation method of light guide panel material TPU film of the present invention, before step (1) described mixing, TPU particle, epoxy resin, polycarbodiimide, polycarbonate pellets, K glue and oxidation inhibitor are carried out drying respectively, described drying temperature is 70-80 DEG C, such as 70 DEG C, 71 DEG C, 72 DEG C, 73 DEG C, 74 DEG C, 75 DEG C, 76 DEG C, 77 DEG C, 78 DEG C, 79 DEG C or 80 DEG C, time of drying is 2-4h, such as 2h, 2.2h, 2.4h, 2.6h, 2.8h, 3h, 3.2h, 3.4h, 3.6h, 3.8h or 4h.
In the preparation method of light guide panel material TPU film of the present invention, described in extrude and utilize casting machine to extrude.
Preferably, each section of temperature of described casting machine arranges as follows: barrel temperature is 140-150 DEG C; Filter screen temperature is 150-160 DEG C; Elbow temperature is 155-160 DEG C; Connection temperature is 145-160 DEG C; Die head temperature is 170-180 DEG C.
As the preferred technical solution of the present invention, the preparation method of light guide panel material TPU film of the present invention comprises the following steps:
(1) by TPU particle, epoxy resin, polycarbodiimide, polycarbonate pellets, K glue and oxidation inhibitor dry 2-4h at 70-80 DEG C in advance, mix;
(2) extruded through casting machine by the mixture that step (1) obtains, each section of temperature of casting machine arranges as follows: barrel temperature is 140-150 DEG C; Filter screen temperature is 150-160 DEG C; Elbow temperature is 155-160 DEG C; Connection temperature is 145-160 DEG C; Die head temperature is 170-180 DEG C, obtains described light guide panel material TPU film.
Relative to prior art, the present invention has following beneficial effect:
The present invention utilizes 70-90 weight part TPU particle, 10-20 parts by weight epoxy resin, 5-8 weight part polycarbodiimide, 25-40 weight part polycarbonate particle, 15-25 weight part K glue and 10-20 weight part oxidation inhibitor prepare light guide panel material TPU film, by the cooperation between each component, and the synergy between component, the transparency of TPU film is made to be 95-98%, excellent optical performance, and there is good hydrolytic resistance, hardness is 70-75A, hardness is moderate, tensile strength is 59-65Mpa, tear strength is 130-135Mpa, there is good mechanical property, can be used for functional film field, have a good application prospect.
Embodiment
Technical scheme of the present invention is further illustrated below by embodiment.Those skilled in the art should understand, described embodiment is only help to understand the present invention, should not be considered as concrete restriction of the present invention.
Embodiment 1
In the present embodiment, TPU film is prepared by following raw material:
Preparation method is as follows:
By above-mentioned each material composition dry 4h at 70 DEG C in advance, mix, extrude through casting machine, each section of temperature of casting machine arranges as follows: barrel temperature is 140 DEG C; Filter screen temperature is 150 DEG C; Elbow temperature is 155 DEG C; Connecting temperature is 145 DEG C; Die head temperature is 170 DEG C, obtains light guide panel material TPU film.
Embodiment 2
In the present embodiment, TPU film is prepared by following raw material:
Preparation method is as follows:
By above-mentioned each material composition dry 3h at 75 DEG C in advance, mix, extrude through casting machine, each section of temperature of casting machine arranges as follows: barrel temperature is 150 DEG C; Filter screen temperature is 150 DEG C; Elbow temperature is 160 DEG C; Connecting temperature is 150 DEG C; Die head temperature is 180 DEG C, obtains light guide panel material TPU film.
Embodiment 3
In the present embodiment, TPU film is prepared by following raw material:
Preparation method is as follows:
By above-mentioned each material composition dry 2h at 80 DEG C in advance, mix, extrude through casting machine, each section of temperature of casting machine arranges as follows: barrel temperature is 145 DEG C; Filter screen temperature is 160 DEG C; Elbow temperature is 160 DEG C; Connecting temperature is 160 DEG C; Die head temperature is 170 DEG C, obtains light guide panel material TPU film.
Embodiment 4
In the present embodiment, TPU film is prepared by following raw material:
Preparation method is as follows:
By above-mentioned each material composition dry 2h at 70 DEG C in advance, mix, extrude through casting machine, each section of temperature of casting machine arranges as follows: barrel temperature is 150 DEG C; Filter screen temperature is 155 DEG C; Elbow temperature is 155 DEG C; Connecting temperature is 145 DEG C; Die head temperature is 180 DEG C, obtains light guide panel material TPU film.
Embodiment 5
In the present embodiment, TPU film is prepared by following raw material:
Preparation method is as follows:
By above-mentioned each material composition dry 4h at 80 DEG C in advance, mix, extrude through casting machine, each section of temperature of casting machine arranges as follows: barrel temperature is 140 DEG C; Filter screen temperature is 150 DEG C; Elbow temperature is 160 DEG C; Connecting temperature is 160 DEG C; Die head temperature is 180 DEG C, obtains light guide panel material TPU film.
Comparative example 1
This comparative example difference from Example 1 is only not comprise polycarbonate pellets and K glue in the raw materials of TPU film, all the other raw materials and raw material dosage and preparation method all identical with embodiment 1 with condition.
Comparative example 2
This comparative example difference from Example 1 is only not comprise polycarbonate pellets in the raw materials of TPU film, and the consumption of K glue is 50 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 1 with condition.
Comparative example 3
This comparative example difference from Example 1 is only not comprise K glue in the raw materials of TPU film, and the consumption of polycarbonate pellets is 50 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 1 with condition.
Comparative example 4
This comparative example difference from Example 1 is only that the consumption of TPU particle in the raw materials of TPU film is 68 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 1 with condition.
Comparative example 5
This comparative example difference from Example 2 is only that the consumption of TPU particle in the raw materials of TPU film is 92 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 2 with condition.
Comparative example 6
This comparative example difference from Example 2 is only that the consumption of the raw materials epoxy resin of TPU film is 9 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 2 with condition.
Comparative example 7
This comparative example difference from Example 3 is only that the consumption of the raw materials epoxy resin of TPU film is 22 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 3 with condition.
Comparative example 8
This comparative example difference from Example 4 is only that the consumption of polycarbodiimide in the raw materials of TPU film is 4 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 4 with condition.
Comparative example 9
This comparative example difference from Example 5 is only that the consumption of polycarbodiimide in the raw materials of TPU film is 9 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 5 with condition.
Comparative example 10
This comparative example difference from Example 2 is only that the consumption of polycarbonate pellets in the raw materials of TPU film is 42 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 2 with condition.
Comparative example 11
This comparative example difference from Example 3 is only that the consumption of polycarbonate pellets in the raw materials of TPU film is 24 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 3 with condition.
Comparative example 12
This comparative example difference from Example 2 is only that the consumption of K glue in the raw materials of TPU film is 14 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 2 with condition.
Comparative example 13
This comparative example difference from Example 3 is only that the consumption of K glue in the raw materials of TPU film is 27 weight parts, all the other raw materials and raw material dosage and preparation method all identical with embodiment 3 with condition.
The performance of TPU film prepared by the TPU film prepare embodiment 1-5 and comparative example 1-13 measures, and measurement result is as shown in table 1.
Table 1
As can be seen from Table 1, the transparency of TPU film (embodiment 1-5) prepared by the present invention is 95-98%, and has good hydrolytic resistance, hardness is 70-75A, tensile strength is 59-65Mpa, and tear strength is 130-135Mpa, has good mechanical property.And if do not add polycarbonate pellets and K glue (comparative example 1) in TPU film raw material, the transparency of the TPU film obtained is only 51%; If do not add polycarbonate pellets (comparative example 2) in TPU film raw material, although K glue add the transparency that also improve TPU film to a certain extent, also transparency can only be increased to 62%; When not adding K glue in TPU film raw material (comparative example 3), although polycarbonate pellets be added in the transparency that improve TPU film to a certain extent, also transparency can only be increased to 69%; And when the polycarbonate pellets added in amount ranges of the present invention and K glue simultaneously (embodiment 1), the transparency of TPU film increases significantly, reach 95%, this illustrates that polycarbonate pellets and K glue have synergy in the transparency strengthening TPU film.
In addition, TPU film of the present invention wants to obtain higher transparency, excellent high temperature resistant, good hydrolytic resistance and good mechanical properties, organic cooperation is needed between each composition, when the content of certain or some component in TPU film raw material too much or very few time, can have an impact to the performance of TPU film, such as comparative example 4-13, because certain amounts of components exceeds limited range of the present invention, causes the transparency of TPU film, hydrolysis and mechanicalness all not as TPU film prepared by the present invention.
Therefore, the present invention utilizes 70-90 weight part TPU particle, 10-20 parts by weight epoxy resin, 5-8 weight part polycarbodiimide, 25-40 weight part polycarbonate particle, 15-25 weight part K glue and 10-20 weight part oxidation inhibitor prepare light guide panel material TPU film, by the cooperation between each component, and the synergy between component, the transparency of TPU film is made to be 95-98%, and there is good hydrolytic resistance, hardness is 70-75A, tensile strength is 59-65Mpa, tear strength is 130-135Mpa, there is good mechanical property, can be used for light guide panel material, have a good application prospect.
Applicant states, the present invention illustrates light guide panel material high transparency TPU film of the present invention and preparation method thereof by above-described embodiment, but the present invention is not limited to above-described embodiment, does not namely mean that the present invention must rely on above-described embodiment and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (8)
1. a light guide panel material TPU film, is characterized in that, described TPU film prepares primarily of the raw material of following weight part:
2. light guide panel material TPU film according to claim 1, is characterized in that, described TPU particle is polyester type TPU particle and/or polyether-type TPU particle.
3. light guide panel material TPU film according to claim 1 and 2, is characterized in that, described epoxy resin is the mixture of a kind of in bisphenol A type epoxy resin, brominated bisphenol a type epoxy resin or phenol aldehyde type epoxy resin or at least two kinds.
4. the light guide panel material TPU film according to any one of claim 1-3, it is characterized in that, described oxidation inhibitor is the mixture of any one or at least two kinds in antioxidant 1010, antioxidant 1076, antioxidant 264, oxidation inhibitor TPP or antioxidant TNP.
5. the preparation method of the light guide panel material TPU film according to any one of claim 1-4, is characterized in that, said method comprising the steps of:
(1) TPU particle, epoxy resin, polycarbodiimide, polycarbonate pellets, K glue and oxidation inhibitor are mixed;
(2) mixture that step (1) obtains is extruded obtain described light guide panel material TPU film.
6. preparation method according to claim 5, it is characterized in that, before step (1) described mixing, TPU particle, epoxy resin, polycarbodiimide, polycarbonate pellets, K glue and oxidation inhibitor are carried out drying respectively, drying temperature is 70-80 DEG C, and time of drying is 2-4h.
7. the preparation method according to claim 5 or 6, is characterized in that, extrudes and utilize casting machine to extrude described in step (2);
Preferably, each section of temperature of described casting machine arranges as follows: barrel temperature is 140-150 DEG C; Filter screen temperature is 150-160 DEG C; Elbow temperature is 155-160 DEG C; Connection temperature is 145-160 DEG C; Die head temperature is 170-180 DEG C.
8. the preparation method according to any one of claim 5-7, is characterized in that, the preparation method of described light guide panel material TPU film comprises the following steps:
(1) by TPU particle, epoxy resin, polycarbodiimide, polycarbonate pellets, K glue and oxidation inhibitor dry 2-4h at 70-80 DEG C in advance, mix;
(2) extruded through casting machine by the mixture that step (1) obtains, each section of temperature of casting machine arranges as follows: barrel temperature is 140-150 DEG C; Filter screen temperature is 150-160 DEG C; Elbow temperature is 155-160 DEG C; Connection temperature is 145-160 DEG C; Die head temperature is 170-180 DEG C, obtains described light guide panel material TPU film.
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| CN107652664A (en) * | 2017-09-28 | 2018-02-02 | 东莞市雄林新材料科技股份有限公司 | A kind of photosensitive colour-changing TPU film for adhering film to glass and preparation method thereof |
| CN107652664B (en) * | 2017-09-28 | 2021-02-09 | 东莞市雄林新材料科技股份有限公司 | Photochromic TPU (thermoplastic polyurethane) film for glass film and preparation method thereof |
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Application publication date: 20151230 |
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| RJ01 | Rejection of invention patent application after publication |