201100529 六、發明說明: 【發明所屬之技術領域】 5 Ο ίο 15 ❹ 20 本發明係關於一種抗靜電保護膜及包含該膜的製品, 尤其關於一種用於液晶顯示幕等易刮傷産品部件的包裝的 抗靜電保護膜及包含該膜的電子製品。 、 【先前技術】 抗靜電保護膜通常用於保護手機螢幕、液晶顯示幕 (LCD)和偏振片等,防止其在運輪過程中由於顛簸振動而受 到到傷或其他損傷。 目前,市場上大部分抗靜電保護膜是内填充抗靜電劑 的聚對苯二甲酸乙二酯(PET)抗靜電薄膜。由於這種膜的硬 度較尚’極易刮傷被保護表面,而且表面電阻率較高,抗 靜電效果不穩定。另外,抗靜電劑可能會遷移到待保護物 體的表面造成污染。 因此’需要開發一種不會對被保護部件(如偏振片)表 面產生刮傷,抗靜電效果穩定,耐高溫高濕老化性能優異, 並且不會污染待保護物體的抗靜電保護膜。 【發明内容】 本申請案的發明人發現,通過在基膜上設置具有特定 硬度、特定拉伸強度和特定抗撕裂強度的熱塑性彈性體聚 合物製成的彈性體層可以得到一種與被保護表面不易發生 相對滑移的保護膜。該保護膜具有優異的耐高溫高濕老化 3 201100529 性能,而且在振動情況下也不會到傷被保護面。通過在基 膜層與彈性體層之間設置導電層或在彈性體層中添加導電 聚合物可以使上述保護膜獲得抗靜電的性能,從而使其具 有防塵的效果。因此該保護膜可以被用於運輸過程中對電 5子産品部件如液晶顯示幕上的偏振片表面進行有效的保 護。 尤其疋,即使在咼溫高濕條件下,構成本發明保護膜 的材料也不會轉移到待保護物體如偏振片的表面。此外, 本發明保s蒦膜不含遷移性抗靜電劑,因此不會產生抗靜電 10劑遷移。因此,本發明保護膜不會對待保護表面造成污染。 由此,本發明第一個方面提供了一種抗靜電保護膜, 包括: 基膜; 導電層,其一面與基膜的一個表面接觸;和 15 彈性體層,其位於導電層的與基膜相對的表面上,該 彈陡體層包含一種或多種硬度低於蕭氏硬度8〇D、拉伸強度 爲15MPa以上和抗撕裂強度爲10千牛頓/米以上的熱塑性彈 性體聚合物,用於對被保護表面提供保護。 本發明第二個方面提供了一種具有抗靜電保護膜,包 20 括: 基膜;和 、具有抗靜電性的彈性體層,其位於基膜的一個表面上 並包含至少一種熱塑性彈性體聚合物和至少一種導電聚合 物的共混物,其中該彈性體層包含硬度低於蕭氏硬度8〇d、 201100529 拉伸強度爲15MPa以上和抗撕裂強度爲ι〇千牛頓/米以上的 材料。本發明的第三個方面提供了一種製品,其包括待保 «蒦元件和設置在所述元件的待保護表面上的本發明抗靜電' 保護膜。 5 本發明中,除非特別指明,“高溫高濕”一詞是指同 時滿足溫度不低於52攝氏度,相對濕度不低於95%的條件。 南内聚力”一詞是指材料具有151^1?&以上的拉伸強 度和千牛頓/米以上的抗撕裂強度。 v) 本發明第一個方面提供了一種抗靜電保護膜,包括: 10 基膜; 導電層,其一面與基膜的一個表面接觸;和 彈性體層,其位於導電層的與基膜相對的表面上,該 彈性體層包含一種或多種硬度低於蕭氏硬度80D、拉伸強度 爲15MPa以上和抗撕裂強度爲1〇千牛頓/米以上的熱塑性彈 15 性體聚合物,用於對被保護表面提供保護》 如圖1所示’根據本發明一種實施方案的抗靜電保護膜 Ο 4由基膜層1、導電層2、和熱塑性彈性體層3組成。 基臈可以是雙向拉伸聚對苯二甲酸乙二醇酯 (BOPET )、雙向拉伸聚丙烯(B〇pp )、雙向拉伸尼龍 20 ( BOPA)等聚合物薄膜,厚度大概在10微米到100微米之 間。對於液晶顯示幕上偏振片的保護應用,爲了薄膜具有 一定的挺括性和便於操作’更佳的基膜厚度爲3〇微米到1〇〇 微米之間’最佳的基膜厚度爲5〇微米到75微米之間。 5 201100529 本發明第一個方面的抗靜電保護膜的抗靜電性能可以 通過導電層實現,適用於本發明的導電層包括但不限於金 屬塗層、導電聚合物塗層、填充了碳奈米管、碳粉、金屬 粉或金屬氧化物粉末的聚合物塗層等。 5 10 15 爲使薄膜具有抗靜電效果的金屬塗層是通過磁控賤射 或真空鍍膜的工藝實現的,常用的金屬有鋁、鎳、鉻、銅、 銀等,也可使用兩種以上的金屬。對於金屬塗層的厚度和 塗布量沒有特別限制,只要表面的表面電阻率低於1〇11歐姆 /平方即可。 爲使薄膜具有抗靜電效果的導電聚合物塗層(如拜耳 公司的Baytron® P)或摻雜導電填充物(如碳黑、碳奈米管、 金屬粉、金屬氧化物等導電粒子)的聚合物塗層是通過熔 融塗布或凹版塗布實現的。適用於本發明的導電聚人物的 例:包括但不限於聚乙炔、聚吡洛、聚嘆吩、聚苯胺、聚 對苯硫醚、聚亞苯基亞乙烯基、或它們的組合。對 =合物塗層的厚度沒有特別限制,只要其表 面201100529 VI. Description of the Invention: [Technical Field of the Invention] 5 Ο ίο 15 ❹ 20 The present invention relates to an antistatic protective film and an article comprising the same, and more particularly to a component for easy scratching of a liquid crystal display screen or the like. A packaged antistatic protective film and an electronic article comprising the film. [Prior Art] Antistatic protective film is usually used to protect mobile phone screens, liquid crystal display (LCD) and polarizers, etc., from being damaged or otherwise damaged by bumps during the transfer process. At present, most of the antistatic protective film on the market is a polyethylene terephthalate (PET) antistatic film filled with an antistatic agent. Since the hardness of the film is relatively high, the surface to be protected is easily scratched, and the surface resistivity is high, and the antistatic effect is unstable. In addition, the antistatic agent may migrate to the surface of the object to be protected to cause contamination. Therefore, it is required to develop an antistatic protective film which does not cause scratches on the surface of a member to be protected (e.g., a polarizing plate), has an antistatic effect, is excellent in high temperature and high aging resistance, and does not contaminate an object to be protected. SUMMARY OF THE INVENTION The inventors of the present application have found that an elastomer layer made of a thermoplastic elastomer polymer having a specific hardness, a specific tensile strength and a specific tear strength can be obtained on a base film. A protective film that is less prone to relative slippage. The protective film has excellent high temperature and high humidity aging 3 201100529 performance, and it will not hurt the protected surface under vibration. The protective film can be made to have an antistatic property by providing a conductive layer between the base film layer and the elastomer layer or by adding a conductive polymer to the elastomer layer, thereby providing a dustproof effect. Therefore, the protective film can be used to effectively protect the surface of the polarizing plate on the electric sub-product parts such as the liquid crystal display during transportation. In particular, even under the conditions of temperature and high humidity, the material constituting the protective film of the present invention is not transferred to the surface of an object to be protected such as a polarizing plate. Further, the protective film of the present invention does not contain a migration antistatic agent, and therefore does not cause migration of the antistatic agent. Therefore, the protective film of the present invention does not cause contamination of the surface to be protected. Thus, a first aspect of the present invention provides an antistatic protective film comprising: a base film; a conductive layer having one side in contact with a surface of the base film; and 15 an elastomer layer located on the opposite side of the conductive layer from the base film On the surface, the projectile abrupt layer comprises one or more thermoplastic elastomer polymers having a hardness of less than 8 〇D, a tensile strength of 15 MPa or more, and a tear strength of 10 kN/m or more. The protective surface provides protection. A second aspect of the present invention provides an antistatic protective film comprising: a base film; and an antistatic elastomer layer on one surface of the base film and comprising at least one thermoplastic elastomer polymer and A blend of at least one electrically conductive polymer, wherein the elastomer layer comprises a material having a hardness of less than 8 〇 d, a 201100529 tensile strength of 15 MPa or more, and a tear strength of ι 〇 kN/m or more. A third aspect of the invention provides an article comprising: a 蒦 element and an antistatic 'protective film of the invention disposed on a surface to be protected of the element. In the present invention, the term "high temperature and high humidity" means a condition that the temperature is not lower than 52 degrees Celsius and the relative humidity is not less than 95%, unless otherwise specified. The term "South cohesion" means that the material has a tensile strength of 151 ^ 1 Å or more and a tear strength of several kilonewtons or more. v) The first aspect of the present invention provides an antistatic protective film comprising: a base film; a conductive layer, one side of which is in contact with a surface of the base film; and an elastomer layer on the surface of the conductive layer opposite to the base film, the elastomer layer comprising one or more hardnesses lower than the Shore hardness of 80D, pulling A thermoplastic elastomer 15 having a tensile strength of 15 MPa or more and a tear strength of 1 〇KN/m or more for providing protection to the surface to be protected. As shown in FIG. 1 'anti-resistance according to an embodiment of the present invention The electrostatic protective film Ο 4 is composed of a base film layer 1, a conductive layer 2, and a thermoplastic elastomer layer 3. The base layer may be biaxially stretched polyethylene terephthalate (BOPET) or biaxially oriented polypropylene (B〇). Pp), biaxially stretched nylon 20 (BOPA) and other polymer films, thickness between about 10 microns and 100 microns. For the protection of polarizers on liquid crystal display screens, for film has a certain stiffness and easy to operate 'more Good base film The thickness of the substrate is between 3 μm and 1 μm. The optimum base film thickness is between 5 μm and 75 μm. 5 201100529 The antistatic property of the antistatic protective film of the first aspect of the invention can pass through the conductive layer. Implementations, conductive layers suitable for use in the present invention include, but are not limited to, metal coatings, conductive polymer coatings, polymer coatings filled with carbon nanotubes, carbon powder, metal powder or metal oxide powder, etc. 5 10 15 In order to make the film have an antistatic effect, the metal coating is realized by a magnetron sputtering or vacuum coating process. The commonly used metals are aluminum, nickel, chromium, copper, silver, etc., and two or more metals may be used. The thickness and the coating amount of the metal coating layer are not particularly limited as long as the surface resistivity of the surface is less than 1 〇 11 ohm/square. A conductive polymer coating having an antistatic effect on the film (such as Baytron® P of Bayer) Or a polymer coating doped with a conductive filler such as carbon black, carbon nanotubes, metal powder, metal oxide or the like is formed by melt coating or gravure coating. Conductive suitable for use in the present invention. Examples of poly-characteristics include, but are not limited to, polyacetylene, polypyrrole, polyseptene, polyaniline, polyparaphenylene sulfide, polyphenylene vinylene, or combinations thereof. Not particularly limited as long as its surface
姆/平方即可。摻雜導電填充物(如碳黑I =二=聚:::化:等導電粒子)的— \虱6日4。根據一種實施方案該聚人 ===:體聚合物’甚至可以與構成彈性體:的 ㈣層==具有相同的結構。導電粒子的摻雜量 於1〇11歐姆/平方即可限制’只要塗層表面的表面電阻率低 20 201100529 彈性體層用於與被保護的表面接觸,使其不被到傷。 該彈性體層可以通過熔融擠出流延塗布的方式或通過凹版 塗布的方式轉移到基膜層上,用於提供對電子元件如偏振 片的保護,即使在高溫高濕情況下也能有效地提供保護。 5熔融擠出流延塗布是通過單螺杆擠出機將原料經熔融後通 過螺杆擠出到塗布模頭,並經塗布模頭流延到基膜上,並 經冷卻輥冷卻再收卷的工藝過程。凹版塗布是指聚合物溶 液經版輥溶液塗布轉移到基膜上,然後經烘箱烘乾並收卷 的過程。彈性體層可以由各種熱穩定性優異、柔軟而且具 10有彈性的高内聚力的熱塑性彈性體聚合物材料,如熱塑性 聚氨酯彈性體(TPU)、有機矽橡膠、三元乙丙橡膠/聚丙烯 (EPDM/PP)、苯乙烯-乙烯_ 丁稀_苯乙烯共聚物(sebs)、或 它們的各種混合物等製成。該彈性體層材料的硬度一般爲 低於蕭氏硬度80D,更佳爲低於蕭氏硬度95A,最佳爲蕭氏 15硬度在l〇A到90A之間(蕭氏硬度分爲蕭a和蕭D,材料硬度 相對較低時用蕭A表徵,一般在蕭95A以上時改用fD表 〇 徵)。這樣可以保證在保護偏振片的同時不會因偶爾産生的 相對位移而對偏振片産生刮傷。同時,該彈性體層的材料 必須選擇内聚力大的高分子純聚合物,該材料的拉伸強度 20 一般爲15Mpa以上,更佳爲拉伸強度在25MPa以上,最佳爲 拉伸強度在30MPa到60MPa之間。並且該材料的抗撕裂強度 在10千牛頓/米以上,更佳爲2〇千牛/米以上,最佳爲4〇千牛 /米到8 0千牛頓/米之間。由於上面所述的熱塑性彈性體在和 被保護表面接觸時具有很高的摩擦係數,並且在一定的壓 7 201100529 力作用下能夠和被保護表面的微觀凹凸結構良好配合,因 此該彈性體層具有和被保護元件表面不易產生相對滑動的 性能,這樣可以減少使用過程中保護膜與被保護表面之間 的相對滑動’從而減少或消除保護膜對被保護表面的刮 5傷,更好地保護元件表面。另外,由於這些熱塑性彈性體 合適的拉伸強度和抗撕裂強度,這樣可以保證其即使在與 被保護表面產生相對摩擦的時候不會有碎屑掉下並遷移到 被保護面上。彈性體層的平均厚度爲5到5〇微米,更佳爲1〇 到30微米,最佳爲1〇到25微米。 1〇 一般來說,熱塑性彈性體高分子材料的内聚力越大, 其外在表現出來的材料拉伸強度也會越大,反過來如果熱 塑性彈性體材料的拉伸強度和抗撕裂強度越大,該材料的 内聚力也越大’对磨性也越好。 本發明第一個方面的抗靜電保護膜的表面電阻率低於 15 1〇13歐姆/平方,較佳低於10π歐姆/平方。這樣可以使該薄 膜具有優異的抗靜電性能和防塵效果,並且能更好地保護 被保護元件表面。 本發明的具有熱塑性彈性體層的抗靜電保護膜對被保 護表面的防刮傷效果優異,而且在高溫高濕條件下不會由 20 於物質遷移/轉移而污染被保護表面,高溫高濕條件下的老 化性能優異。 本發明第二個方面提供了一種具有抗靜電保護膜,包 括: 基膜;和 201100529 具有抗靜電性的彈性體層,其位於基膜的一個表面上 並包含至少一種熱塑性彈性體聚合物和至少一種導電聚合 物的聚合物共混物,其中該彈性體層包含硬度低於蕭氏硬 度80D、拉伸強度爲i5MPa以上和抗撕裂強度爲1〇千牛頓/ 5 米以上的材料。 如圖2所示,根據本發明第二個方面的一種實施方案的 抗靜電保護膜4由基膜層1,和由熱塑性彈性體聚合物和至 〇 J—種導電聚合物的聚合物共混物製成的熱塑性彈性體層 3 ’組成。 1〇 該抗靜電保護膜的基膜層、熱塑性彈性體聚合物、導 電聚合物的種類和要求與本發明的第一個方面相同。 該抗靜電膜的抗靜電性能是通過在熱塑性彈性體層添 加導電聚合物的方式實現的。熱塑性彈性體和導電聚合物 的聚合物共混物通過熔融塗布的方式直接塗到基材層的一 15個表面上形成彈性體層,爲了增加彈性體層和基材層的附 著力,可以先對基材層表面進行電暈處理或塗一層底塗層 ϋ 例如聚氨酯類型的底塗層,然後再進行熔融塗布。熱塑性 彈性體和導電聚合物的具體比例可以根據具體使用的熱塑 性彈性體和導電聚合物的種類而選擇,只要共混後的表面 〇電阻率低於10丨3歐姆/平方即可。這樣可以使該薄膜具有優 異的抗靜電性能和防塵效果,並且能更好地保護被保護元 件表面。一般而言’熱塑性彈性體和導電聚合物的重量比 例範圍可以爲99/1〜70/40,更佳的重量比例範圍可以爲 90/10〜80/20。 9 201100529 本發明第二個方面的抗靜電保護膜的表面電阻率低於 10歐姆/平方,較佳低於1〇11歐姆/平方。這樣可以使該薄 膜具有優異的抗靜電性能和防塵效果,並且能更好地保護 被保護元件表面。 5 本發明的具有熱塑性彈性體層的抗靜電保護膜具有對 被保護表面的防刮傷效果優異,在高溫高濕條件下不會由 於物質遷移/轉移而污染被保護表面,高溫高濕條件下的老 化性能優異,而且表面電阻率穩定,抗靜電效果好,可以 防塵。 10 _ |發明的第三個方面提供了—種製品,其包括待保護 兀件和。又置在所述兀件的待保護表面上的本發明抗靜電保 護膜。所述製品包括但不限於電子元件、鏡頭、眼鏡等需 要提供抗靜電性能的任何製品。電子元件的例子包括但不 限於偏振片、顯示器等。 15 【實施方式】 實施例 本發明中,除非特別扣 J才曰月’所有的份數、比例、百分 含量都以重量計。 2〇 測試方法: a.表面電阻率測試: ’在一定的溫濕度條件 按照ESD Sll.li標 下進行測量: 201100529 先將儀錶(Trek 152電阻率測試儀,TREK,INC.製造) 放在待測量的物體表面,將開關調到所需的電壓位置(— 般爲100伏),以大約4.5磅的壓力持續按下測量按鈕,此時 LCD屏會顯示出測量的表面阻抗,表面電阻率單位是歐姆/ 5 平方。 b·厚度測試 使用厚度測試儀(7301型厚度儀,曰本Mitutoyo公司製 > 造)進行厚度測量。 10 c.老化試驗 將所有待測樣品與偏振片被保護表面貼合,並用膠帶 固定其中兩邊,將其放入52攝氏度,95%濕度的老化箱中, 放置一疋時間後取出,揭開保護膜後在顯微鏡下20倍放大 15倍數下觀察被保護樣品表面是否有東西遷移到該表面。 丨 d.耐刮傷測試 將偏振片的被保護面向上固定在實驗桌邊上,用抗靜 電保護膜的塗有彈性體層的一面去和偏振片的被保護表面 2〇 摩U,用肉眼觀察偏振片表面是否産生嚴重劃痕或是否有 保護膜上的物質轉移到該偏振片表面。 e.透光率測試 測試符合ASTM-D1003標準測試方法,使用Βγκ公司 25 生產的型號爲几4003的霧度儀進行測試》 201100529 原料: 熱塑性聚氨酯彈性體(TPU)(型號:5 8315):路博 潤特種化工上海有限公司,中國上海 5 二7^乙丙橡膠/聚丙烯(EPDM/PP)(型號Deprene): 林艮橡塑,中國上海 苯乙稀-乙烯-丁烯-苯乙烯共聚物(SEBS)(型號: Delene).林艮橡塑,中國上海 有機矽彈性體(型號:C6_265):道康寧中國,中國 10 上海 聚氨酯底塗(PODESENG 111DZ):江陰國聯化工有 限公司,江蘇M / square can be. Doped conductive filler (such as carbon black I = two = poly:::: conductive particles) - \虱6日4. According to one embodiment, the group ===: the bulk polymer ' can have the same structure as the (four) layer == constituting the elastomer:. The doping amount of the conductive particles can be limited to 1 欧姆 11 ohms/square as long as the surface resistivity of the surface of the coating is low 20 201100529 The elastomer layer is used to contact the surface to be protected from being damaged. The elastomer layer can be transferred to the base film layer by melt extrusion casting or by gravure coating to provide protection for electronic components such as polarizing plates, and can be effectively provided even under high temperature and high humidity conditions. protection. 5 melt extrusion casting coating is a process in which a raw material is melted by a single screw extruder, extruded through a screw to a coating die, and cast onto a base film through a coating die, and cooled and cooled by a cooling roll. process. Gravure coating refers to the process in which a polymer solution is transferred onto a base film by a plate roll solution and then dried and wound in an oven. The elastomer layer may be composed of various thermoplastic elastomeric polymer materials which are excellent in thermal stability, soft and have high cohesion of 10 elastic properties, such as thermoplastic polyurethane elastomer (TPU), organic silicone rubber, EPDM/polypropylene (EPDM). /PP), styrene-ethylene-butylene-styrene copolymer (sebs), or various mixtures thereof, and the like. The hardness of the elastomer layer material is generally lower than the Shore hardness of 80D, more preferably lower than the Shore hardness of 95A, and the best is the Shore 15 hardness between 10A and 90A (Shore hardness is divided into Xiao A and Xiao D, when the material hardness is relatively low, it is characterized by Xiao A, and generally it is changed to fD table when the hardness is above 95A). This ensures that the polarizer is protected without scratching the polarizer due to the occasional relative displacement. At the same time, the material of the elastomer layer must select a polymer pure polymer having a large cohesive force, and the tensile strength of the material is generally 15 MPa or more, more preferably the tensile strength is 25 MPa or more, and the optimum tensile strength is 30 MPa to 60 MPa. between. Further, the material has a tear strength of 10 kN/m or more, more preferably 2 k-k/m or more, and most preferably between 4 k-m/m and 80 kN/m. Since the thermoplastic elastomer described above has a high coefficient of friction when it comes into contact with the surface to be protected, and can be well matched with the microscopic uneven structure of the surface to be protected under a certain pressure 7 201100529, the elastomer layer has a The surface of the protected component is not easy to produce relative sliding performance, which can reduce the relative sliding between the protective film and the protected surface during use, thereby reducing or eliminating the scratching of the protective film on the protected surface, and better protecting the surface of the component. . In addition, due to the suitable tensile strength and tear strength of these thermoplastic elastomers, it is ensured that no debris will fall off and migrate to the protected surface even when there is relative friction with the surface to be protected. The elastomer layer has an average thickness of from 5 to 5 microns, more preferably from 1 to 30 microns, most preferably from 1 to 25 microns. 1〇 In general, the greater the cohesive force of the thermoplastic elastomer polymer material, the greater the tensile strength of the material exhibited by the external, and in turn the greater the tensile strength and tear strength of the thermoplastic elastomer material. The greater the cohesive force of the material, the better the wearability. The antistatic protective film of the first aspect of the invention has a surface resistivity of less than 15 1 〇 13 Ω/square, preferably less than 10 π ohm/square. This allows the film to have excellent antistatic properties and dust resistance, and to better protect the surface of the protected component. The antistatic protective film with thermoplastic elastomer layer of the invention has excellent anti-scratch effect on the surface to be protected, and does not pollute the protected surface by the migration/transfer of matter under high temperature and high humidity conditions, under high temperature and high humidity conditions. Excellent aging performance. A second aspect of the present invention provides an antistatic protective film comprising: a base film; and 201100529 an antistatic elastomer layer on one surface of the base film and comprising at least one thermoplastic elastomer polymer and at least one A polymer blend of a conductive polymer, wherein the elastomer layer comprises a material having a hardness of less than 80 D Shore, a tensile strength of i5 MPa or more, and a tear strength of 1 〇 kN / 5 m or more. As shown in FIG. 2, an antistatic protective film 4 according to an embodiment of the second aspect of the present invention is blended from a base film layer 1, and a polymer composed of a thermoplastic elastomer polymer and a conductive polymer. The thermoplastic elastomer layer 3' is composed. The type and requirements of the base film layer, the thermoplastic elastomer polymer, and the conductive polymer of the antistatic protective film are the same as those of the first aspect of the present invention. The antistatic property of the antistatic film is achieved by adding a conductive polymer to the thermoplastic elastomer layer. The polymer blend of the thermoplastic elastomer and the conductive polymer is directly applied to one surface of the substrate layer by melt coating to form an elastomer layer. In order to increase the adhesion between the elastomer layer and the substrate layer, the base may be first The surface of the layer is corona treated or coated with a primer such as a urethane type undercoat and then melt coated. The specific ratio of the thermoplastic elastomer and the conductive polymer can be selected depending on the kind of the thermoplastic elastomer and the conductive polymer to be used, as long as the surface resistivity after blending is less than 10 丨 3 Ω/square. This allows the film to have excellent antistatic properties and dust resistance, and to better protect the surface of the protected component. In general, the weight ratio of the thermoplastic elastomer to the conductive polymer may range from 99/1 to 70/40, and more preferably the weight ratio may range from 90/10 to 80/20. 9 201100529 The antistatic protective film of the second aspect of the invention has a surface resistivity of less than 10 ohms/square, preferably less than 1 〇11 ohms/square. This allows the film to have excellent antistatic properties and dust resistance, and to better protect the surface of the protected component. 5 The antistatic protective film with thermoplastic elastomer layer of the invention has excellent anti-scratching effect on the surface to be protected, and does not pollute the protected surface due to material migration/transfer under high temperature and high humidity conditions, under high temperature and high humidity conditions. Excellent aging performance, stable surface resistivity, good antistatic effect, and dustproof. 10 _ | The third aspect of the invention provides an article of manufacture comprising the element to be protected and. Further, the antistatic protective film of the present invention is placed on the surface to be protected of the element. The articles include, but are not limited to, electronic components, lenses, glasses, and the like that are required to provide antistatic properties. Examples of electronic components include, but are not limited to, polarizers, displays, and the like. [Embodiment] EXAMPLES In the present invention, all parts, ratios, and percentages are by weight unless otherwise specified. 2〇Test method: a. Surface resistivity test: 'Measure under the condition of ESD Sll.li under certain temperature and humidity conditions: 201100529 First put the instrument (Trek 152 resistivity tester, manufactured by TREK, INC.) Measure the surface of the object, adjust the switch to the desired voltage position (typically 100 volts), and press the measurement button continuously at approximately 4.5 lbs. The LCD screen will display the measured surface impedance, surface resistivity unit. Is ohm / 5 square. b. Thickness test Thickness measurement was performed using a thickness tester (Model 7301 Thickness Gauge, manufactured by Mitutoyo Co., Ltd. >). 10 c. Aging test: All the samples to be tested are bonded to the protected surface of the polarizing plate, and the two sides are fixed with tape, and placed in an aging box of 52 ° C, 95% humidity, and taken out after a lapse of time to uncover the protective film. After that, the surface of the protected sample was observed to have something to migrate to the surface under a microscope at 20 times magnification and 15 times.丨d. Scratch-resistance test: The protected surface of the polarizing plate is fixed on the side of the test table, and the surface of the antistatic protective film coated with the elastomer layer is rubbed against the protected surface 2 of the polarizing plate, and observed with the naked eye. Whether the surface of the polarizing plate is severely scratched or whether a substance on the protective film is transferred to the surface of the polarizing plate. e. Transmittance test The test conforms to the ASTM-D1003 standard test method and is tested by a haze meter of model number 4003 produced by Βγκ Company 25 201100529 Material: Thermoplastic polyurethane elastomer (TPU) (Model: 5 8315): Road Borun Specialty Chemicals Shanghai Co., Ltd., Shanghai, China 5 2 7 Ethylene-propylene rubber / polypropylene (EPDM / PP) (Model Deprene): Lin Shu Rubber, China Shanghai styrene-ethylene-butylene-styrene copolymer (SEBS) (Model: Delene). Lin Biao Rubber, China Shanghai Organic Tantalum Elastomer (Model: C6_265): Dow Corning China, China 10 Shanghai Polyurethane Primer (PODESENG 111DZ): Jiangyin Guolian Chemical Co., Ltd., Jiangsu
Baytron® P :拜耳中國有限公司,上海 導電聚苯胺:Panipol公司,芬蘭 15 實施例1 BOPET薄膜厚度爲5〇微米,在其電暈處理面真空鍍 鋁,鑛鋁表面的表面電阻率爲1χ1〇6歐姆/平方,透光率爲 60〇/〇。鍍鋁膜的金屬面經單螺杆擠出機熔融擠出塗布一層約 20 20微米厚的硬度爲蕭85Α、拉伸強度爲37他、抗撕裂強度 爲55千牛頓/米的熱塑性聚氨酷彈性體(τρυ),然後 面輥冷卻’再收卷、分切,得到抗靜電保護膜産品。産品 的透光率爲60%;該産品經2周老化測試,無轉移現象發生; 經耐刮傷測試,十次摩擦後偏振片表面無劃痕,無轉移現 25 象發生;産品的表面電阻率爲1x1〇ig歐姆/平方。 12 201100529 實施例2 5 ❹ 10 15 ❹ 20 BOPET薄膜厚度爲5G微米,在其電暈處理面真空鍵 鋁’表面電阻率爲lx1〇6歐姆/平方,透光率爲6〇%。鑛紹^ 的金屬面經單螺杆熔融擠出塗布一層約2〇微米厚的蕭氏硬 度爲80A、拉伸強度爲25Mpa、抗撕裂強度爲%千牛/来的三 元乙丙橡膠/聚丙稀(EPDM/pp),然後經鏡面輥冷卻,: 收卷、分切’得到抗靜電保護膜産品。産品的透光率爲60%; 該産品經1周老化賴,無轉移現象發生,·經耐職測試, 四次摩擦後偏振片表面無劃痕,無轉移現象發生;産品的 表面電阻率爲lxl〇W歐姆/平方。 實施例3 BOPET薄膜厚度爲5〇微米,在其電暈處理面真空鑛 銘,表面電阻率爲卜⑽歐姆/平方,透光率爲6〇%。鑛^ 的金屬面經單螺杆熔融擠出塗布一層約2〇微米厚的蕭氏硬 度爲70A、拉伸強度爲25Mpa、抗撕㈣度爲%千牛頓,米的 苯乙烯_乙稀·丁烯·苯乙稀絲物SEBS,然後經鏡面輥冷 卻,再收卷、分切’得到抗靜電保護臈產品。產品的透光 率爲60。/“該產品經5天老化測試,無轉移現象發生·經耐 到傷測試,兩-人摩擦後偏振片表面無劃痕,無轉移現象發 生;產品的表面電阻率爲lxl〇lG歐姆/平方。 實施例4 13 201100529 BOPET薄膜厚度爲5Q微米,在其電暈處理面真 紹’表面電阻率爲lxl〇6歐姆/平方,透光率爲6〇%。錢= 的金屬面經單螺杆㈣擠出塗布—層約顺米厚的、 度爲80A、拉伸強度爲25Mpa、抗撕裂強度爲听 5 10 有機石夕彈性體,然後經鏡面輥冷卻,再收卷、分切,^ 抗靜電保護膜產品。產品的透光率爲6()%;該產品經$ 化測試,無轉移現象發生;經耐職測試,四次摩擦後偏 振片表面無劃痕,無轉移現象發生;産品的表面電阻 lxio10歐姆/平方。 手爲Baytron® P: Bayer China Ltd., Shanghai Conductive Polyaniline: Panipol, Finland 15 Example 1 The BOPET film has a thickness of 5 μm and is vacuum-plated on its corona-treated surface. The surface resistivity of the surface of the ore is 1χ1〇. 6 ohms / square, light transmittance of 60 〇 / 〇. The metal surface of the aluminized film is melt-extruded by a single-screw extruder to coat a layer of about 20 20 μm thick with a hardness of 85 Å, a tensile strength of 37 Å, and a tear resistance of 55 kN/m. The elastomer (τρυ) is then cooled and re-rolled and slit to obtain an antistatic protective film product. The product has a light transmittance of 60%; the product has a 2-week aging test and no transfer occurs; after scratch resistance test, after 10 rubs, the surface of the polarizer has no scratches, and no transfer occurs. 25 surface appearance; The rate is 1 x 1 〇ig ohms/square. 12 201100529 Example 2 5 ❹ 10 15 ❹ 20 The thickness of the BOPET film is 5G micron, and the surface resistivity of the vacuum-bonded aluminum on the corona-treated surface is lx1〇6 ohm/square and the light transmittance is 6〇%. The metal surface of the mine is coated by a single screw melt extrusion coating of a layer of about 2 〇 microns thick with a hardness of 80 A, a tensile strength of 25 MPa, and a tear strength of 千 千 / / EPDM / polypropylene Dilute (EPDM/pp), then cooled by mirror roll,: Winding, slitting to get antistatic protective film products. The light transmittance of the product is 60%; the product is aged for 1 week, no transfer phenomenon occurs, and the product has no scratches on the surface of the polarizing plate after four times of friction; no surface transfer occurs; Lxl 〇 W ohms / square. Example 3 The thickness of the BOPET film was 5 Å. On the corona-treated side, the surface resistivity was (10) ohm/square and the light transmittance was 6 〇. The metal surface of the mine is melt-extruded by a single screw to coat a layer of about 2 μm thick with a hardness of 70 A, a tensile strength of 25 MPa, a tear resistance of four degrees, and a styrene-ethylene butene. · Benzene wire SEBS, then cooled by mirror roll, and then reeled and slitted to get antistatic protection products. The product has a light transmission of 60. / "The product has been tested for 5 days aging, no transfer phenomenon occurred. After the resistance test, the surface of the polarizer has no scratches after two-person friction, no transfer phenomenon occurs; the surface resistivity of the product is lxl〇lG ohm/square. Example 4 13 201100529 The thickness of the BOPET film is 5Q micrometers, and the surface resistivity of the corona treated surface is lxl〇6 ohm/square, and the light transmittance is 6〇%. The metal surface of the money = single screw (4) Extrusion coating—the layer is about cis-meter thick, the degree is 80A, the tensile strength is 25Mpa, the tear strength is listening to the 5 10 organic stone elastomer, and then cooled by the mirror roll, and then wound, slit, and resistant Electrostatic protective film product. The light transmittance of the product is 6 ()%; the product has passed the chemical test, no transfer phenomenon occurs; after the endurance test, the surface of the polarizing plate has no scratches after four times of friction, no transfer phenomenon occurs; Surface resistance lxio10 ohms/square.
實施例5 BOPET薄膜厚度爲5G微米,在其—面用凹版塗布方式 塗上-層0.5微米厚的聚氨醋類底塗層,然後在該底塗層^ 面經單螺杆擠出塗布-層共混有聚苯胺(質量百分含量爲 15 15%)的熱塑性聚氨g旨彈性體層,該彈性體層的厚度爲 微米,蕭氏硬度爲90A,拉伸強度爲卿,抗撕裂強度爲 辦牛頓/米,透光率爲85%β然後經鏡面輥冷卻,再收卷、 刀切,彳于到抗靜電保護臈産品。産品的表面電阻率爲卜1〇1〇 歐姆/平方;該産品經2周老化測試,無轉移現象發生;經 20耐刮傷測試,十次摩擦後偏振片表面無劃痕,無轉移現象 發牛。 實施例6 ΒΟΡΕΤ薄膜厚度爲50微米,在其一面用凹版塗布方式 25塗上一層0 5微米厚的聚氨酯類底塗層然後在該底塗層表 14 201100529 面經單螺杆擠出塗布一層共混有Baytron® P (質量百分含 量爲10%)的熱塑性聚氨酯彈性體層,該彈性體層的厚度爲 2〇微米,蕭氏硬度爲90A,拉伸強度爲35Mpa,抗撕裂強度 爲40千牛頓/米,透光率爲85%。然後經鏡面輥冷卻,再收 5 卷、分切,得到抗靜電保護膜産品。產品的表面電阻率爲 1X1011歐姆/平方;該産品經2周老化測試,無轉移現象發 生;經耐到傷測試,十次摩擦後偏振片表面無劃痕,無轉 移現象發生。Example 5 A BOPET film having a thickness of 5 Gm was coated on its face by a gravure coating method with a layer of 0.5 μm thick polyurethane primer, and then subjected to a single screw extrusion coating layer on the undercoat layer. A thermoplastic polyurethane layer blended with polyaniline (15 15% by mass). The elastomer layer has a thickness of micron, a hardness of 90 A, a tensile strength of qing, and a tear strength. Newton/meter, the light transmittance is 85% β and then cooled by the mirror roll, and then wound, cut, and rubbed into antistatic protection products. The surface resistivity of the product is 〇1〇1〇 ohm/square; the product undergoes 2 weeks aging test, no transfer phenomenon occurs; after 20 scratch resistance test, after 10 times of friction, there is no scratch on the surface of the polarizer, no transfer phenomenon Cattle. Example 6 A ruthenium film having a thickness of 50 μm was coated on one side with a 95 μm thick polyurethane-based undercoat layer by a gravure coating method 25 and then subjected to single-screw extrusion coating on the undercoat layer Table 14 201100529. A thermoplastic polyurethane elastomer layer of Baytron® P (10% by mass) having a thickness of 2 μm, a Shore hardness of 90 A, a tensile strength of 35 MPa, and a tear strength of 40 kN/ Meter, the light transmittance is 85%. Then, it is cooled by a mirror roll, and then 5 rolls and slits are obtained to obtain an antistatic protective film product. The surface resistivity of the product is 1X1011 ohm/square; the product has been tested for 2 weeks aging, no transfer phenomenon occurs; after the resistance test, after 10 times of friction, there is no scratch on the surface of the polarizer, and no transfer phenomenon occurs.
G 10 實施例7 BOPET薄膜厚度爲50微米,在其一面用凹版塗布方式 塗上一層0.5微米厚的聚氨酯類底塗層,然後在該底塗層表 面經過熔融擠出塗布一層1〇微米厚的含2〇%導電聚苯胺的 聚合物層,表面電阻率爲ixl08歐姆/平方,透光率爲85%。 15塗有導電聚合物的表面經單螺杆擠出塗布一層約1〇微米厚 的蕭氏硬度爲85A、拉伸強度爲37MPa、抗撕裂強度爲55千 〇 牛頓/米的聚醚型熱塑性聚氨酯彈性體TPU,然後經鏡面輥 冷卻,再收卷、分切,得到抗靜電保護膜產品。產品的透 光率爲85% ;該産品經2周老化測試,無轉移現象發生;經 20耐刮傷測試,十次摩擦後偏振片表面無劃痕,無轉移現象 發生;産品的表面電阻率爲lxl 〇12歐姆/平方。 實施例8 BOPET薄膜厚度爲50微米,在其電暈處理面經單螺杆 25擠出塗布一層共混有Baytr〇n®P (質量百分含量爲1〇%)的 15 10 15 20 201100529 熱塑性聚氨酯彈性體層,該彈性體層的厚度爲2〇微米,蕭 氏硬度爲规,拉伸強度爲35MPa,抗撕裂強度爲糾千牛頓 /米’透光率爲跳。然後經鏡面親冷卻,再收卷、分切, 得到抗靜電保護膜産品。産品的表面電阻率爲…化姆/ 5平方,該產品經2周老化測試,無轉移現象發生;經耐刮傷 測试,十次摩擦後偏振片表面無劃痕,無轉移現象發生。 實施例9 BOPET薄膜厚度爲5〇微米,在其電晕處理面真空鑛 紹’㈣表面的表面電阻率爲1χ1〇6歐姆/平方,透光率爲又 _。鑛紹膜的金屬面經單螺杆擠出機溶融擠出塗布一層約 2〇微米厚的硬度㈣氏硬度_、拉㈣度爲3GMPa、抗撕 裂強度爲3G千牛頓/㈣熱塑性聚氨_性體(咖),然 ,經鏡面輥冷卻,再收卷、分切,得到抗靜電保護膜產品。' 2的透㈣爲6〇% ;該產品經2周老化測試,無轉移現象 發生,經耐刮傷測試,2次摩擦後偏振片表面有輕微劃痕, c移現象發生;産品的表面電阻率爲1X1 〇!。歐姆/平方。 實施例10 BOPET薄膜厚度爲5〇微米,在其電暈處理面真空名 紹,仙表面的表面電阻率爲1χ1()6歐姆/平方,透』 娜。㈣膜的金屬面經單螺杆擠出肋 分 =的硬度錢氏硬度85A、拉伸強度爲_二 裂強度爲30千牛胸的熱塑性聚氨醋彈性體(τρυ),匆 後經鏡面輥冷卻,再收卷、分切,得到抗靜電㈣膜產品,G 10 Example 7 The BOPET film has a thickness of 50 μm, a 0.5 μm thick polyurethane-based undercoat layer is coated on one side by gravure coating, and then a layer of 1 μm thick is coated on the surface of the undercoat layer by melt extrusion coating. A polymer layer containing 2% by weight of conductive polyaniline having a surface resistivity of ixl08 ohm/square and a light transmittance of 85%. 15 The surface coated with the conductive polymer was subjected to single-screw extrusion coating of a polyether thermoplastic polyurethane having a thickness of about 1 μm and a hardness of 85 A, a tensile strength of 37 MPa, and a tear strength of 55 kN/m. The elastomer TPU is then cooled by a mirror roll, and then wound and slit to obtain an antistatic protective film product. The light transmittance of the product is 85%; the product has passed the 2 weeks aging test, no transfer phenomenon occurs; after 20 scratch resistance test, the surface of the polarizing plate has no scratches after ten times of friction, no transfer phenomenon occurs; the surface resistivity of the product Is lxl 〇 12 ohms / square. Example 8 A BOPET film having a thickness of 50 μm was extrusion coated on a corona-treated surface by a single screw 25 with a layer of 15 10 15 20 201100529 thermoplastic polyurethane blended with Baytr〇n® P (% by mass). The elastomer layer has a thickness of 2 μm, a Shore hardness of 35 MPa, and a tear strength of a thousand Newtons/meter of light transmittance. Then, after mirror cooling, and then winding and slitting, an antistatic protective film product is obtained. The surface resistivity of the product is ... m / 5 square, the product is tested by 2 weeks aging, no transfer phenomenon occurs; after scratch resistance test, after 10 times of friction, there is no scratch on the surface of the polarizing plate, and no transfer occurs. Example 9 The thickness of the BOPET film was 5 μm, and the surface resistivity of the surface of the vacuum surface of the corona treated surface was 1χ1〇6 ohm/square, and the light transmittance was _. The metal surface of the mineral film is melt-extruded by a single-screw extruder to coat a layer of hardness of about 2 μm thick (four) hardness _, pull (four) degrees of 3GMPa, tear strength of 3G kilonewtons / (4) thermoplastic polyurethane _ The body (coffee), of course, is cooled by a mirror roll, and then wound and slit to obtain an antistatic protective film product. The penetration of '2' is 6〇%; the product is tested for 2 weeks aging, no transfer occurs, and after scratch resistance test, the surface of the polarizer has slight scratches after 2 rubs, c shift phenomenon occurs; surface resistance of the product The rate is 1X1 〇!. Ohm/square. Example 10 The thickness of the BOPET film was 5 Å, and the surface resistivity of the surface of the celestial surface was 1 χ 1 () 6 ohm/square, which was transparent. (4) The metal surface of the film is cooled by a single screw extrusion rib = hardness of 85 A, the tensile strength is _ two-strength strength of 30 kN chest of thermoplastic polyurethane elastomer (τρυ), after a temperate mirror cooling , rewinding, slitting, and obtaining antistatic (four) film products,
16 25 201100529 産品的透光率爲60% ;該產品經2周老化測試,無轉移現象 發生;經耐刮傷測言式,十次摩擦後偏振片表面無劃痕僅 有非常輕微的轉移現象發生;産品的表面電阻率爲ΐχΐ〇ι〇 歐姆/平方。 5 實施例11 ΒΟΡΕΤ薄膜厚度爲5〇微米,在其電暈處理面真空鍍 鋁,鍍鋁表面的表面電阻率爲1χ1〇6歐姆/平方,透光率爲 〇 6〇%。鍍鋁膜的金屬面經單螺杆擠出機熔融擠出塗布一層約 1〇 2〇微米厚的硬度爲蕭氏硬度85Α、拉伸強度爲30MPa、抗撕 裂強度爲ίο千牛頓/米的熱塑性聚氨酯彈性體(τρυ),然 後經鏡面輥冷卻,再收卷、分切,得到抗靜電保護膜產品。' 產品的透光率爲60% ;該產品經2周老化測試,無轉移現象 發生;經耐刮傷測試,十次摩擦後偏振片表面無劃痕,僅 15有非常輕微的轉移現象發生;産品的表面電阻率爲1χ1〇10 歐姆/平方。 〇 實施例12 ΒΟΡΕΤ溥膜厚度爲5〇微米,在其一面用凹版塗布方式 20塗上層〇.5微米厚的聚氨酯類底塗層,然後在該底塗層表 面經過熔融擠出塗布一層1〇微米厚的含1〇%導電Β叮⑧ P的聚氨酯層,表面電阻率爲lxl011歐姆/平方,透光率爲 90/。塗有導電聚合物的表面經單螺杆擠出塗布一層約 微米厚的蕭氏硬度爲85A、拉伸強度爲37Mpa、抗撕裂強度 25 爲55千牛頓/米的聚醚型熱塑性聚氨酯彈性體TPTJ,然後經 17 201100529 鏡面輥泠卻,再收卷、分切,得到抗靜電保護膜産品。産 品的透光率爲90。/“該產品經2周老化測言式,無轉移現象發 生;經耐到傷測試,十次摩擦後偏振片表面無劃痕,無轉 移現象發生;産品的表面電阻率爲1χ1〇]3歐姆/平方。 5 對比實施例1 : ΒΟΡΕΤ薄膜厚度爲50微米,該薄膜爲内添加抗靜電劑 (在薄膜擠出製造過程中填加了遷移性抗靜電劑,如聚季 銨鹽類抗靜電劑Μ-550 (廣州華利美化工有限公司)的抗靜 1〇電薄膜,該抗靜電PET薄膜的硬度爲1Η,表面電阻率爲不 低於lxlO11歐姆/平方。該産品的透光率爲9〇%。相對於實 施例,對比實施例1的抗靜電保護膜在使用過程中,特別是 在被保護元件的運輸過程中產生震動時該保護膜會與被保 護表面産生相對滑動,從而劃傷被保護表面。而且該保護 15膜經高溫高濕老化後,抗靜電效果會減弱或者消失。 對比實施例2 : BOPET薄膜厚度爲50微米,在其電暈處理面真空鍍 鋁,鍍鋁表面的表面電阻率爲lxl〇6歐姆/平方,透光率爲 20 60〇/〇。鍍鋁膜的金屬面經單螺杆擠出機熔融擠出塗布一層約 20微米厚的蕭氏硬度爲85A、拉伸強度爲1〇Μρ&、抗撕裂強 度爲5千牛頓/米的熱塑性聚氨酯彈性體τρυ’然後經鏡面輥 冷卻,再收卷、分切。産品的透光率爲6〇% ;表面電阻率 IxlO11歐姆/平方;該產品經一天老化測試,有轉移現象發 25 生;經耐到傷測試,十次摩擦後偏振片表面無劃痕,但有 18 201100529 微小顆粒轉移到被保護膜表面。相對於實施例M2,對比 實施例2的具有彈性體層的保護膜的彈性體層的内聚力強 度較差,故不能對被保護表面起到很好的保護作用。 5 【圖式簡單說明】 圖1是本發明一個實施方案的抗靜電保護膜的示意圖。 圖2是本發明另一個實施方案的抗靜電保護膜的示意圖。 〇 【主要元件符號說明】 10 基膜層1 導電層2 熱塑性彈性體層3、3, 抗靜電保護膜4 〇 1916 25 201100529 The light transmittance of the product is 60%; the product has been tested for 2 weeks aging, no transfer occurs; after scratch resistance test, there is no slight scratch on the surface of the polarizer after ten rubs. Occurs; the surface resistivity of the product is ΐχΐ〇ι〇 ohms/square. 5 Example 11 The thickness of the tantalum film was 5 μm, and the surface of the aluminized surface was vacuum-coated with aluminum on the corona-treated surface, and the surface resistivity was 1χ1〇6 ohm/square, and the light transmittance was 〇6〇%. The metal surface of the aluminized film is melt-extruded by a single-screw extruder to a thickness of about 1 2 2 μm thick and having a hardness of 85 Å, a tensile strength of 30 MPa, and a tear strength of ίο kN/m. The polyurethane elastomer (τρυ) is then cooled by a mirror roll, and then wound and slit to obtain an antistatic protective film product. The product's light transmittance is 60%; the product has been tested for 2 weeks aging, no transfer phenomenon occurs; after scratch resistance test, after 10 times of friction, the surface of the polarizer has no scratches, and only 15 has a very slight transfer phenomenon; The surface resistivity of the product is 1χ1〇10 ohms/square. Example 12 A ruthenium film having a thickness of 5 μm was coated on one side with a layer of 〇.5 μm thick polyurethane-based undercoat layer, and then a layer of 1 〇 was melt-extruded on the surface of the undercoat layer. The micron-thick polyurethane layer containing 1% by weight of conductive Β叮 8 P has a surface resistivity of lxl011 ohm/square and a light transmittance of 90/. The surface coated with the conductive polymer was subjected to single-screw extrusion coating of a polyether thermoplastic polyurethane elastomer TPTJ having a thickness of about 85 μm, a tensile strength of 37 MPa, and a tear strength of 25 kg/m. Then, after 17 201100529 mirror roll, it can be wound up and cut to obtain antistatic protective film products. The product has a light transmission of 90. / "The product has 2 weeks of aging test, no transfer phenomenon occurs; after the resistance test, after 10 times of friction, there is no scratch on the surface of the polarizer, no transfer phenomenon occurs; the surface resistivity of the product is 1χ1〇]3 ohm / 平方. 5 Comparative Example 1: The thickness of the ruthenium film is 50 μm, and the film is internally filled with an antistatic agent (a migration antistatic agent such as a polyquaternium antistatic agent is added during the film extrusion manufacturing process). Μ-550 (Guangzhou Hualimei Chemical Co., Ltd.) anti-static 1 〇 film, the hardness of the antistatic PET film is 1 Η, the surface resistivity is not less than lxlO11 ohm / square. The light transmittance of the product is 9 〇%. Relative to the embodiment, the antistatic protective film of Comparative Example 1 will slide relative to the surface to be protected during the use of the antistatic protective film, particularly during the transportation of the protected member, thereby scratching The surface to be protected. And after the high temperature and high humidity aging of the protective film 15, the antistatic effect will be weakened or disappeared. Comparative Example 2: The thickness of the BOPET film is 50 micrometers, vacuum-plated on the corona treated surface, and the aluminum-plated surface table The surface resistivity is lxl 〇 6 ohms/square, and the light transmittance is 20 60 〇 / 〇. The metal surface of the aluminized film is melt-extruded by a single-screw extruder to coat a layer of about 20 μm thick with a hardness of 85 A. The thermoplastic polyurethane elastomer τρυ' with a tensile strength of 1〇Μρ& and a tear strength of 5 kN/m is then cooled by a mirror roll, and then wound and slit. The light transmittance of the product is 6〇%; surface resistance The rate is IxlO11 ohm/square; the product is tested by one day aging, and there is a transfer phenomenon of 25 years; after the resistance test, after 10 times of friction, the surface of the polarizer has no scratches, but there are 18 201100529 fine particles transferred to the surface of the protected film. Compared with the embodiment M2, the elastomer layer of the protective film having the elastomer layer of Comparative Example 2 has a poor cohesive strength, so that the protected surface cannot be well protected. 5 [Simple description of the drawing] FIG. 2 is a schematic view of an antistatic protective film according to another embodiment of the present invention. 〇 [Main component symbol description] 10 base film layer 1 conductive layer 2 thermoplastic elastomer 3,3, 4 antistatic protection film 19 billion