TWI508994B - Polycarbonate composition - Google Patents
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- TWI508994B TWI508994B TW102148767A TW102148767A TWI508994B TW I508994 B TWI508994 B TW I508994B TW 102148767 A TW102148767 A TW 102148767A TW 102148767 A TW102148767 A TW 102148767A TW I508994 B TWI508994 B TW I508994B
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Description
本發明是有關於一種聚碳酸酯組成物，且特別是有關於一種導電性及絕緣性優異的聚碳酸酯組成物。The present invention relates to a polycarbonate composition, and in particular to a polycarbonate composition which is excellent in electrical conductivity and insulation.
近年來，由於聚碳酸樹脂(polycarbonate resin)具有耐衝擊性及單位體積質量輕、易加工、絕緣性強等優點，已被廣泛生產與應用於光電產業、生物科技產業或資訊電子產業等領域。In recent years, polycarbonate resin has been widely used in the optoelectronic industry, biotechnology industry or information electronics industry due to its impact resistance, light weight per unit volume, easy processing, and strong insulation.
隨著聚碳酸樹脂在各領域的應用越來越廣泛，鑒於電子裝置等的高度集成化、微小型化，在電性絕緣的前提下，對聚碳酸樹脂的導熱散熱性能的要求提高。聚碳酸樹脂本身導熱性不佳，目前通常以添加陶瓷填料來提升聚碳酸樹脂的導熱性。然而，同時具有高絕緣性及高導熱性的填料種類稀少，故為了避免聚碳酸樹脂之絕緣特性降低，目前填料的使用上仍有諸多限制。因此，開發具有良好導熱性及絕緣性且製造成本低的聚碳酸樹脂組成物仍是目前此領域極欲發展的目標。With the increasing use of polycarbonate resins in various fields, in view of the high integration and miniaturization of electronic devices and the like, the requirements for heat conduction and heat dissipation performance of polycarbonate resins are improved under the premise of electrical insulation. Polycarbonate itself has poor thermal conductivity, and ceramic fillers are often added to enhance the thermal conductivity of polycarbonate. However, the types of fillers having high insulating properties and high thermal conductivity are scarce, so there are still many limitations in the use of fillers in order to avoid a decrease in the insulating properties of polycarbonate resins. Therefore, the development of a polycarbonate resin composition having good thermal conductivity and insulation and low manufacturing cost is still an extremely desirable target in the field.
本發明提供一種聚碳酸酯組成物，其同時具有高導熱性、高絕緣性以及較低的製造成本。The present invention provides a polycarbonate composition which has both high thermal conductivity, high insulation, and low manufacturing cost.
本發明的聚碳酸酯組成物包括聚碳酸酯、石墨以及雲母，其中石墨與雲母的重量比為0.15至1.75。The polycarbonate composition of the present invention comprises polycarbonate, graphite, and mica, wherein the weight ratio of graphite to mica is from 0.15 to 1.75.
在本發明的一實驗例中，上述石墨與雲母的重量比為0.2至1.5。In an experimental example of the present invention, the weight ratio of the graphite to the mica is from 0.2 to 1.5.
在本發明的一實驗例中，以上述聚碳酸酯組成物的總重量計，聚碳酸酯的含量大於或等於45wt%。In an experimental example of the present invention, the content of the polycarbonate is greater than or equal to 45 wt% based on the total weight of the polycarbonate composition.
在本發明的一實驗例中，以上述聚碳酸酯組成物的總重量計，聚碳酸酯的含量為45wt%至70wt%。In an experimental example of the present invention, the content of the polycarbonate is from 45% by weight to 70% by weight based on the total weight of the above polycarbonate composition.
在本發明的一實驗例中，上述聚碳酸酯的熔融流動指數MI小於或等於10。In an experimental example of the present invention, the polycarbonate has a melt flow index MI of 10 or less.
在本發明的一實驗例中，以上述聚碳酸酯組成物的總重量計，石墨的含量為5wt%至35wt%。In an experimental example of the present invention, the content of graphite is from 5% by weight to 35% by weight based on the total weight of the above polycarbonate composition.
在本發明的一實驗例中，以上述聚碳酸酯組成物的總重量計，雲母的含量為15wt%至40wt%。In an experimental example of the present invention, the mica content is from 15% by weight to 40% by weight based on the total weight of the above polycarbonate composition.
在本發明的一實驗例中，上述雲母的含鐵量小於500ppm。In an experimental example of the present invention, the mica has an iron content of less than 500 ppm.
在本發明的一實驗例中，上述雲母的黃色指數YI小於10。In an experimental example of the present invention, the mica has a yellow index YI of less than 10.
本發明的聚碳酸酯組成物包括聚碳酸酯、石墨以及雲 母，其中以聚碳酸酯組成物的總重量計，聚碳酸酯的含量大於或等於45wt%，石墨的含量為10wt%至30wt%，雲母的含量為20wt%至25wt%。The polycarbonate composition of the present invention includes polycarbonate, graphite, and clouds The mother, wherein the content of the polycarbonate is greater than or equal to 45 wt%, the content of graphite is from 10 wt% to 30 wt%, and the content of mica is from 20 wt% to 25 wt%, based on the total weight of the polycarbonate composition.
基於上述，本發明所提出的聚碳酸酯組成物含有石墨與雲母，藉此使得聚碳酸酯組成物同時具有高導熱性及高絕緣性。另外，由於雲母的價格便宜，本發明所提出的聚碳酸酯組成物製造成本能夠降低。Based on the above, the polycarbonate composition proposed by the present invention contains graphite and mica, whereby the polycarbonate composition has both high thermal conductivity and high insulation. In addition, since the price of mica is low, the manufacturing cost of the polycarbonate composition proposed by the present invention can be reduced.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實驗例，並配合所附圖式作詳細說明如下。The above features and advantages of the present invention will become more apparent from the following description.
在本文中，由「一數值至另一數值」表示的範圍，是一種避免在說明書中一一列舉該範圍中的所有數值的概要性表示方式。因此，某一特定數值範圍的記載，涵蓋該數值範圍內的任意數值以及由該數值範圍內的任意數值界定出的較小數值範圍，如同在說明書中明文寫出該任意數值和該較小數值範圍一樣。In the present specification, the range represented by "a value to another value" is a schematic representation that avoids enumerating all the values in the range in the specification. Therefore, the recitation of a particular range of values is intended to include any value in the range of values and the range of values defined by any value in the range of values, as in the specification. The scope is the same.
為了製備出具有高導熱性、高絕緣性以及低製造成本的聚碳酸酯組成物，本發明提出一種聚碳酸酯組成物，其可達到上 述優點。In order to prepare a polycarbonate composition having high thermal conductivity, high insulation and low manufacturing cost, the present invention provides a polycarbonate composition which can be achieved Said advantages.
本發明的一實施方式提供一種聚碳酸酯組成物，包括聚碳酸酯、石墨以及雲母。以下將詳細說明這三種成分。One embodiment of the present invention provides a polycarbonate composition comprising polycarbonate, graphite, and mica. The three components will be described in detail below.
[聚碳酸酯][polycarbonate]
聚碳酸酯的合成方法並無特別的限制，一般的方法有光氣法、酯交換法、開環聚合法及二氧化碳聚合法等。詳細而言，光氣法為在一均質系統或非均質系統中將溶於鹼液的二羥基芳基類化合物和溶於溶劑(如二氯甲烷)的光氣(phosgene)以胺類為觸媒進行聚合反應。酯交換法為在熔融狀態將二羥基芳基類化合物與碳酸酯系化合物(如二苯基碳酸酯、二甲基碳酸酯)進行酯交換反應。較佳地，酯交換法是將二羥基芳基類化合物及碳酸酯系化合物在熔融狀態下進行酯交換反應。The method for synthesizing the polycarbonate is not particularly limited, and general methods include a phosgene method, a transesterification method, a ring opening polymerization method, and a carbon dioxide polymerization method. In detail, the phosgene method is to treat a dihydroxy aryl compound dissolved in an alkali solution and a phosgene dissolved in a solvent (such as dichloromethane) as an amine in a homogeneous system or a heterogeneous system. The medium is subjected to a polymerization reaction. The transesterification method is a transesterification reaction of a dihydroxyaryl compound with a carbonate compound such as diphenyl carbonate or dimethyl carbonate in a molten state. Preferably, the transesterification method is a transesterification reaction in which a dihydroxyaryl compound and a carbonate compound are in a molten state.
聚碳酸酯的種類並無特別的限制，聚碳酸酯可以是任何已知的單一單體聚碳酸酯或共聚碳酸酯。另外，較佳地，聚碳酸酯可利用二羥基芳基類化合物與碳酸酯系化合物進行酯交換反應而製得。詳細而言，二羥基芳基類化合物是選自於二羥基聯苯類化合物、雙-(羥苯基)烷類化合物、雙-(羥苯基)雙烷類化合物、雙-(羥苯基)-硫化物、雙-(羥苯基)醚類化合物、雙-(羥苯基)酮類化合物、雙-(羥苯基)亞碸類化合物、雙-(羥苯基)碸類化合物、烷基環亞己基雙酚類化合物、雙-(羥苯基)-二異丙基苯類化合物、上述化合物的烷化衍生物、上述化合物的鹵化衍生物或其組合。The kind of the polycarbonate is not particularly limited, and the polycarbonate may be any known single monomer polycarbonate or copolycarbonate. Further, preferably, the polycarbonate can be obtained by transesterification of a dihydroxy aryl compound with a carbonate compound. In detail, the dihydroxyaryl compound is selected from the group consisting of dihydroxybiphenyls, bis-(hydroxyphenyl)alkanes, bis-(hydroxyphenyl)bisalkanes, bis-(hydroxyphenyl) - sulfide, bis-(hydroxyphenyl) ether compound, bis-(hydroxyphenyl) ketone compound, bis-(hydroxyphenyl) anthracene compound, bis-(hydroxyphenyl) fluorene compound, An alkylcyclohexylene bisphenol compound, a bis-(hydroxyphenyl)-diisopropylbenzene compound, an alkylated derivative of the above compound, a halogenated derivative of the above compound, or a combination thereof.
前述二羥基芳基類化合物的具體實例包括4,4-二羥基聯 苯、2,2-二(4-羥基苯基)丙烷(2,2-bis(4-hydroxyphenyl)propane，簡稱雙酚A(bisphenol A))、2,4-雙-(4-羥苯基)-2-甲基丁烷、1,1-雙-(4-羥苯基)-環己烷(1,1-bis(4-hydroxyphenyl)cyclohexane)、α,α-雙-(4-羥苯基)-二異丙基苯、2,2-雙-(3-甲基-4-羥苯基)-丙烷、2,2-雙-(3-氯-4-羥苯基)-丙烷、雙-(3,5-二甲基-4-羥苯基)-甲烷、2,2-雙-(3,5-二甲基-4-羥苯基)-丙烷(2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane)、雙-(3,5-二甲基-4-羥苯基)-碸、2,4-雙-(3,5-二甲基-4-羥苯基)-2-甲基丁烷、1,1-雙-(3,5-二甲基-4-羥苯基)-環己烷、α,α-雙-(3,5-二甲基-4-羥苯基)-對-二異丙基苯、2,2-雙-(3,5-二氯-4-羥苯基)-丙烷、2,2-雙-(3,5-二溴-4-羥苯基)-丙烷(2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane)、鹵化雙酚(halogenated bisphenol)、對苯二酚(hydroquinone)、雙(4-羥基苯基)甲烷(bis(4-hydroxyphenyl)methane)、雙(4-羥基苯基)硫(bis(4-hydroxyphenyl)sulfide)、雙(4-羥基苯基)碸(bis(4-hydroxyphenyl)sulfone)、雙(4-羥基苯基)亞碸(bis(4-hydroxyphenyl)sulfoxide)、雙(4-羥基苯基)酮(bis(4-hydroxyphenyl)ketone)、雙(4-羥基苯基)醚(bis(4-hydroxyphenyl)ether)、上述化合物的均聚物、上述化合物的共聚物或其組合。較佳地，二羥基芳基類化合物為2,2-雙-(4-羥苯基)-丙烷。Specific examples of the aforementioned dihydroxyaryl compound include 4,4-dihydroxyl linkage Benzene, 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), 2,4-bis-(4-hydroxyphenyl) )-2-methylbutane, 1,1-bis(4-hydroxyphenyl)cyclohexane, α,α-bis-(4-hydroxyl) Phenyl)-diisopropylbenzene, 2,2-bis-(3-methyl-4-hydroxyphenyl)-propane, 2,2-bis-(3-chloro-4-hydroxyphenyl)-propane , bis-(3,5-dimethyl-4-hydroxyphenyl)-methane, 2,2-bis-(3,5-dimethyl-4-hydroxyphenyl)-propane (2,2-bis (3,5-dimethyl-4-hydroxyphenyl)propane), bis-(3,5-dimethyl-4-hydroxyphenyl)-indole, 2,4-bis-(3,5-dimethyl-4 -hydroxyphenyl)-2-methylbutane, 1,1-bis-(3,5-dimethyl-4-hydroxyphenyl)-cyclohexane, α,α-bis-(3,5- Dimethyl-4-hydroxyphenyl)-p-diisopropylbenzene, 2,2-bis-(3,5-dichloro-4-hydroxyphenyl)-propane, 2,2-bis-(3 , 2,2-bis(3,5-dibromo-4-hydroxyphenyl)propane, halogenated bisphenol, hydroquinone, Bis (4-hydroxyphenyl)methane, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)sulfonate (bis(4-hydroxyphenyl)sulfide) 4-hydr Oxyphenyl)sulfone), bis(4-hydroxyphenyl)sulfoxide, bis(4-hydroxyphenyl)ketone, bis(4-hydroxybenzene) A bis (4-hydroxyphenyl)ether, a homopolymer of the above compound, a copolymer of the above compounds, or a combination thereof. Preferably, the dihydroxyaryl compound is 2,2-bis-(4-hydroxyphenyl)-propane.
前述碳酸酯系化合物包含但不限於二苯基碳酸酯(diphenyl carbonate)、二甲基碳酸酯(dimethyl carbonate)、二乙 基碳酸酯(diethyl carbonate)或其組合。The aforementioned carbonate-based compound includes, but is not limited to, diphenyl carbonate, dimethyl carbonate, and diethyl ether. Diethyl carbonate or a combination thereof.
另外，聚碳酸酯的末端基團構造並沒有特定的限制。所述末端基團包含但不限於羥基、芳族烴基碳酸酯及烷基碳酸酯等。本發明中使用的聚碳酸酯含一個或一個以上羥基的末端基團。詳細而言，聚碳酸酯的末端基團的羥基來自於二羥基芳基類化合物。In addition, the end group structure of the polycarbonate is not particularly limited. The terminal groups include, but are not limited to, a hydroxyl group, an aromatic hydrocarbon carbonate, an alkyl carbonate, and the like. The polycarbonate used in the present invention contains terminal groups of one or more hydroxyl groups. In detail, the hydroxyl group of the terminal group of the polycarbonate is derived from a dihydroxyaryl compound.
另外，聚碳酸酯的熔融流動指數MI小於或等於10。若熔融流動指數MI大於10，則流動性過高，不易加工成型。更佳地，熔融流動指數MI小於或等於9。最佳地，熔融流動指數MI小於或等於8。Further, the polycarbonate has a melt flow index MI of less than or equal to 10. If the melt flow index MI is more than 10, the fluidity is too high and it is difficult to form. More preferably, the melt flow index MI is less than or equal to 9. Most preferably, the melt flow index MI is less than or equal to 8.
另外，以聚碳酸酯組成物的總重量計，聚碳酸酯的含量大於或等於45wt%。若聚碳酸酯的含量小於45wt%時，則容易造成押出機堵塞的現象，而不易進行成型押出；當聚碳酸酯的含量大於或等於45wt%時，則不僅無上述缺點，且導電性及絕緣性相當優異。在一實施例中，以聚碳酸酯組成物的總重量計，聚碳酸酯的含量為45wt%至70wt%。在另一實施例中，以聚碳酸酯組成物的總重量計，所述聚碳酸酯的含量為50wt%至60wt%。另外，聚碳酸酯的重量平均分子量範圍為20,000~24,000，較佳為22,000~24,000。Further, the content of the polycarbonate is greater than or equal to 45 wt% based on the total weight of the polycarbonate composition. If the content of the polycarbonate is less than 45 wt%, it is easy to cause clogging of the extruder, and it is not easy to carry out molding extrusion; when the content of the polycarbonate is greater than or equal to 45 wt%, not only the above disadvantages are not obtained, but also conductivity and insulation. Very good sex. In one embodiment, the polycarbonate is present in an amount from 45 wt% to 70 wt%, based on the total weight of the polycarbonate composition. In another embodiment, the polycarbonate is present in an amount from 50% to 60% by weight based on the total weight of the polycarbonate composition. Further, the polycarbonate has a weight average molecular weight ranging from 20,000 to 24,000, preferably from 22,000 to 24,000.
[石墨][graphite]
石墨的種類並無特別的限制，石墨可以是透過合成而得的人工石墨、天然石墨、可膨脹石墨或是厚度小於1微米的膨脹 石墨。在一實施例中，石墨為天然石墨。詳細而言，可商購的天然石墨存在有三種類型：鱗片型石墨(flake graphite)、無定形石墨(amorphous graphite)和晶體礦脈石墨(crystal vein graphite)。使用時可選擇單一類型的石墨或使用兩種以上混合的石墨。在一實施例中，石墨較佳為鱗片型石墨。The type of graphite is not particularly limited, and graphite may be artificial graphite obtained by synthesis, natural graphite, expandable graphite, or expansion having a thickness of less than 1 μm. graphite. In an embodiment, the graphite is natural graphite. In detail, there are three types of commercially available natural graphite: flake graphite, amorphous graphite, and crystal vein graphite. A single type of graphite or a mixture of two or more types of graphite may be selected for use. In one embodiment, the graphite is preferably scaly graphite.
在一實施例中，以聚碳酸酯組成物的總重量計，石墨的含量為5wt%至35wt%。在另一實施例中，以聚碳酸酯組成物的總重量計，石墨的含量為10wt%至30wt%。另外，石墨的平均粒度範圍為300μm至500μm，較佳為350μm至450μm。若石墨的粒徑過小則聚碳酸酯組成物導熱效果不明顯，而粒徑過大則與聚碳酸酯組成物的混合性不佳。In one embodiment, the graphite is present in an amount from 5 wt% to 35 wt%, based on the total weight of the polycarbonate composition. In another embodiment, the graphite is present in an amount from 10% to 30% by weight based on the total weight of the polycarbonate composition. Further, the graphite has an average particle size ranging from 300 μm to 500 μm, preferably from 350 μm to 450 μm. If the particle size of graphite is too small, the heat transfer effect of the polycarbonate composition is not remarkable, and if the particle size is too large, the miscibility with the polycarbonate composition is not good.
[雲母][mica]
雲母為層狀矽酸鹽礦物(phyllosilicate mineral)，且在本發明的聚碳酸酯組成物中，與石墨結合可提高導熱性及絕緣性。Mica is a phyllosilicate mineral, and in the polycarbonate composition of the present invention, it is combined with graphite to improve thermal conductivity and insulation.
雲母的種類並無特別的限制，雲母可以是白雲母(muscovite)、金雲母(phlogopite)、黑雲母(biotite)、絹雲母(sericite)、鋰雲母(lepidolite)、珍珠雲母(margarite)、海綠石(glauconite)或人造雲母(如氟金雲母)等。市面上最常見的兩類雲母為白雲母及金雲母，故典型用於本發明。白雲母為雙八面體鹼金屬矽酸鋁。白雲母具有矽酸鋁薄片藉鉀離子層微弱結合在一起的層狀結構。白雲母具有下述組成KAl3 Si3 O10 (OH)2 。金雲母為參八面體鹼金屬矽酸鋁。金雲母具有矽酸鋁鎂薄片藉鉀離子層 微弱結合在一起之層狀結構，且具有下述組成KMg3 AlSi3 O10 (OH)2 。此兩類雲母典型皆以有鮮明界限邊緣的薄板狀或薄片狀的形式存在。在一實施例中，雲母可以是市售產品，例如A-5630(由向陽礦業製造)。在一實施例中，本發明的雲母具有平坦顆粒，且其顆粒大小為1微米至50微米。There are no special restrictions on the type of mica. Muscovite can be muscovite, phlogopite, biotite, sericite, lepidolite, margarite, sea green. Glauconite or artificial mica (such as fluorophlogopite). The two most common types of mica on the market are muscovite and phlogopite, and are typically used in the present invention. Muscovite is a double octahedral alkali metal ruthenate. Muscovite has a layered structure in which aluminum silicate flakes are weakly bonded by a potassium ion layer. Muscovite has the following composition KAl 3 Si 3 O 10 (OH) 2 . The phlogopite is an octahedral alkali metal citrate. The phlogopite has a layered structure in which the aluminum magnesium silicate flakes are weakly bonded by a potassium ion layer, and has the following composition KMg 3 AlSi 3 O 10 (OH) 2 . Both types of mica are typically present in the form of thin plates or flakes with sharply defined edges. In an embodiment, the mica may be a commercially available product, such as A-5630 (manufactured by Xiangyang Mining). In one embodiment, the mica of the present invention has flat particles and has a particle size of from 1 micron to 50 microns.
另外，雲母的含鐵量小於500ppm。若雲母的含鐵量大於500ppm，則易有色澤，影響後續加工。更佳地，雲母的含鐵量小於300ppm。最佳地，雲母的含鐵量小於150ppm。In addition, the mica has an iron content of less than 500 ppm. If the iron content of mica is more than 500ppm, it is easy to have color and affect subsequent processing. More preferably, the mica has an iron content of less than 300 ppm. Most preferably, the mica has an iron content of less than 150 ppm.
另外，雲母的黃色指數YI小於10。若雲母的黃色指數YI大於10，則易有色澤，影響後續加工。更佳地，雲母的黃色指數YI小於9。最佳地，雲母的黃色指數YI小於8。In addition, the yellow index YI of the mica is less than 10. If the yellow index YI of the mica is greater than 10, it is easy to have color, which affects subsequent processing. More preferably, the yellow index YI of the mica is less than 9. Most preferably, the mica has a yellow index YI of less than 8.
在一實施例中，以聚碳酸酯組成物的總重量計，雲母的含量為15wt%至40wt%。在另一實施例中，以聚碳酸酯組成物的總重量計，雲母的含量為20wt%至30wt%。另外，雲母的平均粒度範圍為1μm至50μm，較佳為10μm至40μm。若雲母的粒徑過小則聚碳酸酯組成物絕緣效果不明顯，而粒徑過大則與聚碳酸酯組成物的混合性不佳。In one embodiment, the mica content is from 15% by weight to 40% by weight based on the total weight of the polycarbonate composition. In another embodiment, the mica content is from 20 wt% to 30 wt%, based on the total weight of the polycarbonate composition. Further, the mica has an average particle size ranging from 1 μm to 50 μm, preferably from 10 μm to 40 μm. If the particle size of the mica is too small, the insulating effect of the polycarbonate composition is not remarkable, and if the particle size is too large, the miscibility with the polycarbonate composition is not good.
另外，在本實施方式中，石墨與雲母的重量比為0.15至1.75，較佳為0.2至1.5。若石墨與雲母的重量比小於0.15，則聚碳酸酯組成物的導熱性降低，以致於無法使用在要求有良好散熱效果的應用中，而若石墨與雲母的重量比大於1.75，則聚碳酸酯組成物的表面電阻降低而失去絕緣性。Further, in the present embodiment, the weight ratio of graphite to mica is from 0.15 to 1.75, preferably from 0.2 to 1.5. If the weight ratio of graphite to mica is less than 0.15, the thermal conductivity of the polycarbonate composition is lowered, so that it cannot be used in applications requiring good heat dissipation, and if the weight ratio of graphite to mica is more than 1.75, polycarbonate The surface resistance of the composition is lowered to lose the insulation.
另外，在本實施方式中，透過使用石墨與雲母，不但使得聚碳酸酯組成物同時具有良好的導熱性及絕緣性，更由於雲母的價格便宜，使得聚碳酸酯組成物的製造成本降低。Further, in the present embodiment, by using graphite and mica, not only the polycarbonate composition has good thermal conductivity and insulation properties, but also the mica is inexpensive, and the production cost of the polycarbonate composition is lowered.
在不損及本發明的聚碳酸酯組成物的效果範圍內，聚碳酸酯組成物可依需要添加使用其他的添加劑。添加劑可單獨或混合使用，且添加劑包含但不限於熱穩定劑、紫外線吸收劑、抗氧化劑、潤滑劑、成核劑、抗靜電劑、脫模劑、著色劑(例如染料和顏料)、阻燃劑、增塑劑、增韌劑、其他樹脂(例如橡膠系聚合物)或類似物等。The polycarbonate composition may be added with other additives as needed within the range of the effect of not impairing the polycarbonate composition of the present invention. The additives may be used singly or in combination, and the additives include, but are not limited to, heat stabilizers, ultraviolet absorbers, antioxidants, lubricants, nucleating agents, antistatic agents, mold release agents, colorants (such as dyes and pigments), and flame retardants. Agents, plasticizers, toughening agents, other resins (such as rubber-based polymers) or the like.
本發明的另一實施方式提供一種聚碳酸酯組成物，包括：聚碳酸酯、石墨以及雲母，其中以聚碳酸酯組成物的總重量計，聚碳酸酯的含量大於或等於45wt%，石墨的含量為10wt%至30wt%，雲母的含量為20wt%至25wt%。然而，聚碳酸酯、石墨以及雲母的相關描述已於上述實施方式中進行詳盡地說明，故於此不再贅述。Another embodiment of the present invention provides a polycarbonate composition comprising: polycarbonate, graphite, and mica, wherein the content of the polycarbonate is greater than or equal to 45 wt% based on the total weight of the polycarbonate composition, graphite The content is from 10% by weight to 30% by weight, and the content of mica is from 20% by weight to 25% by weight. However, the related descriptions of polycarbonate, graphite, and mica have been described in detail in the above embodiments, and thus will not be described again.
下文將參照實驗範例，更具體地描述本發明。雖然描述了以下實驗，但是在不逾越本發明範疇的情況下，可適當地改變所用材料、其量及比率、處理細節以及處理流程等等。因此，不應根據下文所述的實驗對本發明作出限制性地解釋。The invention will be described more specifically below with reference to experimental examples. Although the following experiments are described, the materials used, the amounts and ratios thereof, the processing details, the processing flow, and the like can be appropriately changed without departing from the scope of the invention. Therefore, the invention should not be construed restrictively on the basis of the experiments described below.
實驗所用的材料及設備如下：The materials and equipment used in the experiment are as follows:
聚碳酸酯： 由奇美實業公司製造，商品名為WONDERLITE PC-110，熔融流動指數等於10，其中熔融流動指數(Melt flow index，簡稱MI)依ASTM D-1238標準方法測試，測試溫度/荷重：300℃/1.2公斤。單位：克/10分鐘(g/10min.)。Polycarbonate: Manufactured by Chimei Industrial Co., Ltd. under the trade name WONDERLITE PC-110, the melt flow index is equal to 10, and the Melt flow index (MI) is tested according to the ASTM D-1238 standard method. Test temperature/load: 300 °C/1.2 kg. Unit: g/10 minutes (g/10min.).
石墨：由潤優企業有限公司代理，商品名為+590。Graphite: Acted by Runyou Enterprise Co., Ltd., the trade name is +590.
雲母：由向陽礦業股份有限公製造，商品名為MICA；雲母含鐵量為100ppm，黃色指數YI=7。雲母含鐵量使用習知EDS量測。雲母黃色指數YI使用分光儀(型號：Gretoawacbeth color-eye 3100)測其黃色指數YI值。Mica: manufactured by Xiangyang Mining Co., Ltd., trade name MICA; mica iron content is 100ppm, yellow index YI=7. Mica iron content is measured using conventional EDS. The mica yellow index YI was measured for its yellow index YI value using a spectrometer (model: Gretoawacbeth color-eye 3100).
氮化硼：由Aldrich製造，粒徑約為1μm。Boron nitride: manufactured by Aldrich, having a particle size of about 1 μm.
碳酸鈣(CaCO3 )：由台灣塑膠工業股份有限公司製造，商品名為FP-102。Calcium carbonate (CaCO 3 ): manufactured by Taiwan Plastics Industry Co., Ltd. under the trade name FP-102.
雲母-氮化硼組成物：由向陽礦業股份有限公司製造，商品名為BN-MICA。Mica-boron nitride composition: manufactured by Xiangyang Mining Co., Ltd. under the trade name BN-MICA.
滑石粉(talc)：由海城市鑫達礦業股份有限公司製造，牌號為SDC-F7。Talc (talc): manufactured by Haicheng Xinda Mining Co., Ltd. under the designation SDC-F7.
玻璃纖維：由台灣玻璃工業股份有限公司製造，牌號為473A。Glass fiber: manufactured by Taiwan Glass Industry Co., Ltd., grade 473A.
塑料混煉機(Brabender)： 由Thermo Haake製造，設備名為Haake Polylab QC。Plastic mixer (Brabender): Made by Thermo Haake, the device is called Haake Polylab QC.
雙軸押出機：由澤機工業製造，設備名為ZPT32。Two-axis extruder: manufactured by Zeji Industry, the equipment name is ZPT32.
取50wt%之呈粒狀的聚碳酸酯、30wt%之鱗片型的石墨、20wt%的雲母，以塑料混煉機進行熔融混練並押出，其中塑料混煉機的料筒溫度設定為280℃、轉速為60RPM、時間為5分鐘，即可製得呈粒狀之實驗例1的聚碳酸酯組成物。Taking 50% by weight of granular polycarbonate, 30% by weight of flaky graphite, 20% by weight of mica, melt-kneading and extruding in a plastic mixer, wherein the temperature of the barrel of the plastic mixer is set to 280 ° C, The polycarbonate composition of Experimental Example 1 in a granular form was obtained at a rotational speed of 60 RPM and a time of 5 minutes.
除了下文中表2所示聚碳酸酯、石墨及雲母的用量外，以與實驗例1相同的方式製備出實驗例2至實驗例4的聚碳酸酯組成物。The polycarbonate compositions of Experimental Examples 2 to 4 were prepared in the same manner as in Experimental Example 1, except that the amounts of polycarbonate, graphite and mica shown in Table 2 below were used.
取60wt%之呈粒狀的聚碳酸酯、20wt%之鱗片型的石墨、20wt%的雲母，以附有排氣口的雙軸押出機進行熔融混練並押出，其中雙軸押出機的料筒溫度設定為270~300℃、轉速為350RPM，即可製得呈粒狀之實驗例5的聚碳酸酯組成物。60% by weight of granular polycarbonate, 20wt% of scaly type graphite, 20wt% of mica, melt-kneaded and extruded by a biaxial extruder with a vent, wherein the barrel of the biaxial extruder The polycarbonate composition of Experimental Example 5 in a granular form was obtained by setting the temperature to 270 to 300 ° C and the number of revolutions of 350 RPM.
除了下文中表2所示聚碳酸酯、石墨及雲母的用量外，以與實驗例5相同的方式製備出實驗例6至實驗例7的聚碳酸酯組成物。The polycarbonate compositions of Experimental Examples 6 to 7 were prepared in the same manner as Experimental Example 5 except for the amounts of polycarbonate, graphite and mica shown in Table 2 below.
比較例1與實驗例1的差異為：比較例1的聚碳酸酯組成物中不添加雲母，意即僅單獨使用石墨，其詳細用量如表1所示。此外，比較例1具與實驗例1相同的製備方式。The difference between Comparative Example 1 and Experimental Example 1 was that no mica was added to the polycarbonate composition of Comparative Example 1, that is, graphite was used alone, and the detailed amounts thereof are shown in Table 1. Further, Comparative Example 1 had the same preparation method as Experimental Example 1.
比較例2與實驗例1的差異為：比較例2的聚碳酸酯組成物中不添加石墨，意即僅單獨使用雲母，其詳細用量如表1所示。此外，比較例2具與實驗例1相同的製備方式。The difference between Comparative Example 2 and Experimental Example 1 was that graphite was not added to the polycarbonate composition of Comparative Example 2, that is, mica alone was used alone, and the detailed amounts thereof are shown in Table 1. Further, Comparative Example 2 had the same preparation method as Experimental Example 1.
比較例3至比較例7與實驗例1的差異為：比較例3至比較例7的聚碳酸酯組成物分別使用滑石粉、氮化硼、雲母-氮化硼組成物、玻璃纖維、碳酸鈣來取代雲母，其詳細用量如表1所示。此外，比較例3至比較例7皆具與實驗例1相同的製備方式。The difference between Comparative Example 3 to Comparative Example 7 and Experimental Example 1 was that the polycarbonate compositions of Comparative Examples 3 to 7 used talc, boron nitride, mica-boron nitride composition, glass fiber, and calcium carbonate, respectively. To replace mica, the detailed dosage is shown in Table 1. Further, Comparative Examples 3 to 7 all had the same preparation methods as Experimental Example 1.
除了下文中表2所示聚碳酸酯、石墨及雲母的用量外，以與實驗例1相同的方式製備出比較例8至比較例12的聚碳酸酯組成物。The polycarbonate compositions of Comparative Examples 8 to 12 were prepared in the same manner as in Experimental Example 1, except that the amounts of polycarbonate, graphite and mica shown in Table 2 below were used.
接著，使用油壓成型機在溫度300℃下，分別將實驗例1至實驗例7及比較例1至比較例12所得的聚碳酸酯組成物成形，以製備出對應的樣品(尺寸為5cm×5cm×3mm)。之後，對各樣品進行導熱率及表面電阻的測定。前述測定的說明如下，且測定的結果顯示於表1及表2中。Next, the polycarbonate compositions obtained in Experimental Examples 1 to 7 and Comparative Examples 1 to 12 were molded at a temperature of 300 ° C using a hydraulic molding machine to prepare corresponding samples (size 5 cm × 5cm × 3mm). Thereafter, the thermal conductivity and the surface resistance of each sample were measured. The above measurement is described below, and the results of the measurement are shown in Tables 1 and 2.
依ISO 22007-2法，對尺寸為5cm×5cm×3mm的樣品進行測定，單位為W/mK，測試機台為由科邁斯集團(TechMax)代理的熱傳導分析儀(型號為TPS2500)。在業界中，導熱率的標準至少要大於1.0W/mK，越高表示導熱性越好。The sample was measured in a size of 5 cm x 5 cm x 3 mm in units of W/mK according to the ISO 22007-2 method, and the test machine was a heat conduction analyzer (model TPS2500) represented by TechMax. In the industry, the thermal conductivity standard is at least greater than 1.0 W/mK, with higher values indicating better thermal conductivity.
依ASTM D257法，對尺寸為5cm×5cm×3mm的樣品進行測定，單位為Ω/cm2 。在業界中，表面電阻的標準至少要大於104 Ω/cm2 ，越高表示絕緣性越好，導電性越差。The sample having a size of 5 cm × 5 cm × 3 mm was measured in accordance with ASTM D257, and the unit was Ω/cm 2 . In the industry, the standard of surface resistance is at least 10 4 Ω/cm 2 , and the higher the insulation, the worse the conductivity.
由表1可知，實驗例1的聚碳酸酯組成物同時具有良好的導熱性及絕緣性。相反地，觀察比較例1之只添加石墨的聚碳酸酯組成物，可發現其絕緣效果不佳；觀察比較例2之只添加雲母的聚碳酸酯組成物，可發現其導熱效果不佳；以及觀察比較例3至比較例7之未添加雲母而分別由滑石粉、氮化硼、雲母-氮化硼組成物、玻璃纖維、碳酸鈣取代的聚碳酸酯組成物，可發現其絕緣效果皆不佳。As is clear from Table 1, the polycarbonate composition of Experimental Example 1 has both good thermal conductivity and insulation properties. On the contrary, when the graphite-added polycarbonate composition of Comparative Example 1 was observed, it was found that the insulating effect was poor; and the polycarbonate composition containing only mica added in Comparative Example 2 was found to have poor heat conductivity; The polycarbonate compositions of Comparative Example 3 to Comparative Example 7 which were not added with mica and were respectively substituted with talc, boron nitride, mica-boron nitride composition, glass fiber or calcium carbonate, were found to have no insulating effect. good.
詳細而言，在已知技術中，石墨、雲母、滑石粉、氮化硼、雲母-氮化硼組成物、玻璃纖維、碳酸鈣皆為可作為改變聚碳酸酯之導熱性或絕緣性的無機添加劑。然而，由表1可知，在眾多列舉的無機添加物中，組合使用石墨與雲母，使得所得到的聚碳酸酯組成物同時具有良好的導熱性及絕緣性。In detail, in the known technology, graphite, mica, talc, boron nitride, mica-boron nitride composition, glass fiber, and calcium carbonate are all inorganics which can change the thermal conductivity or insulation of polycarbonate. additive. However, as can be seen from Table 1, graphite and mica are used in combination in a plurality of listed inorganic additives, so that the obtained polycarbonate composition has good thermal conductivity and insulation at the same time.
另外，由表1及表2可知，實驗例1至實驗例7的聚碳酸酯組成物皆同時具有良好的導熱性及絕緣性。相反地，由表2 可知，比較例8至比較例12的聚碳酸酯組成物則皆無法同時具備良好的導熱性及絕緣性。Further, as is clear from Tables 1 and 2, the polycarbonate compositions of Experimental Examples 1 to 7 both had good thermal conductivity and insulation properties. Conversely, by Table 2 It can be seen that the polycarbonate compositions of Comparative Examples 8 to 12 do not have good thermal conductivity and insulation at the same time.
綜上所述，上述實施方式所提出的聚碳酸酯組成物含有石墨與雲母，藉此使得聚碳酸酯組成物同時具有良好的導熱性及絕緣性。另外，由於與習知使用的氮化硼或玻璃纖維等相比，雲母具有便宜的價格，上述實施方式所提出的聚碳酸酯組成物具有較低的製造成本。As described above, the polycarbonate composition proposed in the above embodiment contains graphite and mica, whereby the polycarbonate composition has good thermal conductivity and insulation at the same time. Further, since the mica has an inexpensive price as compared with conventionally used boron nitride or glass fiber or the like, the polycarbonate composition proposed in the above embodiment has a low manufacturing cost.
雖然本發明已以實驗例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。While the present invention has been described above by way of example, it is not intended to limit the scope of the present invention, and it is possible to make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.
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- 2013-12-27 TW TW102148767A patent/TWI508994B/en not_active IP Right Cessation
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2014
- 2014-03-21 CN CN201410106409.1A patent/CN104744910B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI304427B (en) * | 2001-01-25 | 2008-12-21 | Bayer Ag | Polycarbonate compositions with reduced iron content |
| JP2011016936A (en) * | 2009-07-09 | 2011-01-27 | Mitsubishi Engineering Plastics Corp | High thermal conduction insulating resin composition and molding |
| WO2013043454A2 (en) * | 2011-09-21 | 2013-03-28 | Polyone Corporation | Sustainable theromplastic compounds |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201525018A (en) | 2015-07-01 |
| CN104744910B (en) | 2017-04-12 |
| CN104744910A (en) | 2015-07-01 |
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