經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（1 ) 本發明係有關大量混入石墨的射出成形用含石墨塑膠 製錠片材料及其製造方法。 以往，射出成形使用塑膠製錠片材料，藉由此塑膠製 錠片材料可製作所希望的塑膠製品。 但是近年來，使用塑膠製型蕊做爲鋁擇薄鑄造用的型 蕊。這種塑膠製型蕊係以模鋳鑄造法鑲造鋁縳造物後，加 熱，自鋁鑄造物中抽出。 如上述，雖使用塑膠製型蕊做爲鋁模縳鋳造用的型蕊 ，但塑膠的剝離性不太好，故塑膠製型蕊經加熱後抽出時 ，塑膠製型蕊的一部分會殘留在鋁鑄造物內部。此時，必 須除去塑膠製型蕊的殘留物，造成麻煩的鋁鑄造物的後處 理。 若能以剝離性良好的材料，使模鑄鑄造用的型蕊成形 時較理想。 本發明即考慮此點，以提供得到剝離性良好且機械性 强度優之射出成形物的射出成形用含石墨塑膠製錠片材料 及其製造方法爲目的。 如申請專利範圍第1項的發明係由塑膠成分與石墨成 分所構成之含石墨塑膠製錠片材料。 如申請專利範園第3項的發明係由將塑膠製錠片與粉 狀石墨塡充至擠出機的漏斗的步驟，於擠出機的汽缸內， 藉由螺旋加熱壓縮塑膠製錠片與粉狀石墨，熔融塑膠製錠 片，同時混練塑膠與石墨的步驟，切碎由擠出機流出的塑 膠及石墨的混合物的步驟所構成之含石墨塑膠製錠片材料 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁) 、ys 經濟部中央標準局員工消費合作杜印裝 A 7 B7 五、發明説明（2 ) 的製造方法。 依本發明藉由使用由塑膠成分與石墨成分所構成之含 石墨塑膠製錠片材料，可得到剝離性良好且機械性强度優 之射出成形物。 〔實施例〕 以下，參照圖面，說明本發明的實施例。 圖1〜圖3係表示本發明的一實施例圖。 首先，以圖2說明塑膠與石墨的混練操作。如圖2所 示，擠示機1 〇具有支架2 0上所配置的漏斗2 3 ,漏斗 2 3所連接的汽缸2 6，汽缸2 6內設置的螺旋2 8，螺 旋2 8係藉由馬達2 1 ，減速機構2 2驅動。 這種擠出機1 0，首先於漏斗2 3內塡充塑膠製，例 如由聚碳酸酯製錠片與粉狀石墨所構成的原料2 5。漏斗 2 3內的聚碳酸酯製錠片與粉狀石墨的重置比率係與後述 含石墨塑膠製錠片材料17的聚碳酸酯成分與石墨成分的 重量比率相對應，.於9 0 : 1 0〜1 0 : 9 0的範圍內。 其次，漏斗2 3內的原料2 5被送往汽缸2 6，隨著螺旋 2 8的旋轉，於汽缸2 6內，原料2 5被加壓，同時以加 熱器2 7加熱。汽缸2 6內，原料2 5被加熱壓縮時，聚 碳酸酯產生熔融，與粉狀石里混合，由擠出機1 〇的壓頭 經台1 1 (圖1 )外流。 石墨於1 0 0 0°C以下的環境條件下，不會與合成樹 脂產生化學反應，故聚碳酸酯與石墨的混合物中，聚碳酸 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -S - --------;袭------1Τ-----> ^ (靖先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局g;工消費合作杜印製 A7 ___B7_五、發明説明（3 ) 酯與石墨分別具有其固有的特性。 其次，如圖1所示，擠出機1 0內所混練的聚碳酸醋 與石墨成單絲狀混合物1 2，由台1 1送入製錠片機1 6 內。單絲狀混合物12於製錠片機16內，藉由供給輥 1 3 ，1 4送往旋轉刀1 5，藉由此旋轉刀1 5微細切碎 ，得到直徑1〜2mm之含石墨塑膠製錠片材料i 7。 此含石墨塑膠製錠片材料1 7係聚碳酸酯成分與石墨 成分的混合物，聚碳酸酯成分與石墨成分的重量比率爲 90 : 10〜10 : 90的範圍內。 聚碳酸酯成分與石墨成分的重量比率比9 0 : 1 〇更 多的聚碳酸酯成分時，射出成形物的剝離性稍微差。 聚碳酸酯成分與石墨成分的重量比率比1 0 : 9 0更 多的石墨成分時，射出成形物的韌性差。 如下述可決定聚碳酸酯成分與石墨成分的組合。即製 造構造單純且體稹大的射出成形物時，可由下表中選擇 石墨體稹％較大的聚碳酸酯成分與石墨成分的組合。此時 例如選擇石墨體稹％爲7 0 %的組合時，可混合1 5 4 0 g石墨與3 6 9 g聚碳酸酯。又，下表係表示全體的體稹 物1 0 0 0 cm3時與石墨體稹％對應的石墨與聚碳酸酯 的配合量（g )。 又，製作構造複雜且體積小的射出成形物時，可選擇 石墨體稹％較小的聚碳酸酯成分與石墨成分的組合。Printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 B7 V. Description of the invention (1) The present invention relates to a graphite-containing plastic ingot sheet material for injection molding in which a large amount of graphite is mixed and its manufacturing method. Conventionally, injection molding uses a plastic ingot material, and the plastic ingot material can be used to produce a desired plastic product. However, in recent years, plastic cores have been used as cores for thin aluminum casting. This plastic-made core is inlaid with an aluminum binder by die casting, then heated and extracted from the aluminum casting. As mentioned above, although plastic cores are used as aluminum cores, the peelability of the plastics is not very good, so when the plastic cores are drawn out after heating, part of the plastic cores will remain in the aluminum The interior of the casting. At this time, the residue of the plastic core must be removed, causing troublesome post-processing of the aluminum casting. If a material with good releasability can be used, the core for die casting can be ideally formed. The present invention takes this point into consideration, and aims to provide a graphite-containing plastic ingot material for injection molding that provides an injection molded product with good peelability and excellent mechanical strength, and a method of manufacturing the same. For example, the invention of claim 1 is a graphite-containing plastic ingot material composed of a plastic component and a graphite component. For example, the invention of patent application No. 3 consists of the steps of filling plastic ingots and powdered graphite sheets into the funnel of the extruder. In the cylinder of the extruder, the plastic ingots are compressed by spiral heating Powder graphite, ingots made of molten plastic, the steps of mixing plastic and graphite at the same time, and the step of shredding the mixture of plastic and graphite flowing out of the extruder. The graphite-containing plastic ingot material composed of graphite. (CNS) A4 specification (210X297mm) (please read the precautions on the back before filling in this page). Ys Central Business Bureau of the Ministry of Economic Affairs Employee Consumer Cooperative Du Printing Pack A 7 B7 5. The manufacturing method of the invention description (2). According to the present invention, by using a graphite-containing plastic ingot material composed of a plastic component and a graphite component, an injection molded article with good peelability and excellent mechanical strength can be obtained. [Examples] Hereinafter, examples of the present invention will be described with reference to the drawings. 1 to 3 are diagrams showing an embodiment of the present invention. First, the kneading operation of plastic and graphite will be described with FIG. 2. As shown in FIG. 2, the extruder 10 has a funnel 2 3 arranged on a bracket 20, a cylinder 26 connected to the funnel 23, a screw 2 8 provided in the cylinder 26, and the screw 28 is driven by a motor 2 1, the reduction mechanism 2 2 drives. In such an extruder 10, a funnel 23 is first filled with plastic, for example, a raw material 25 composed of polycarbonate ingots and powdered graphite. The replacement ratio of polycarbonate ingots and powdered graphite in the funnel 23 corresponds to the weight ratio of the polycarbonate component and the graphite component of the graphite-containing plastic ingot material 17 described later, at 9 0: 1 0 ~ 1 0: 9 0 range. Next, the raw material 25 in the funnel 23 is sent to the cylinder 26, and along with the rotation of the screw 28, the raw material 25 is pressurized in the cylinder 26 and heated by the heater 27 at the same time. When the raw material 25 is heated and compressed in the cylinder 26, the polycarbonate melts, mixes with the powdered stone, and flows out from the head of the extruder 10 through the table 1 1 (Fig. 1). Graphite will not react chemically with synthetic resin under the environmental conditions below 1000 ° C. Therefore, in the mixture of polycarbonate and graphite, the size of the polycarbonate is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 Mm) -S---------; 袭 ------ 1Τ ----- > ^ (Jing first read the notes on the back and then fill out this page) Central Bureau of Standards, Ministry of Economic Affairs g ; Industry and consumer cooperation Du printed A7 ___B7_ V. Description of the invention (3) Ester and graphite have their own inherent characteristics. Next, as shown in Fig. 1, the polycarbonate and graphite kneaded in the extruder 10 form a monofilament-like mixture 12 and are fed from the table 1 1 into the tablet making machine 16. The monofilament mixture 12 is sent to the rotary blade 15 by the supply rollers 1 3 and 14 in the ingot making machine 16, and the rotary blade 15 is finely chopped to obtain a graphite-containing plastic with a diameter of 1 to 2 mm Ingot material i 7. This graphite-containing plastic ingot material 17 is a mixture of a polycarbonate component and a graphite component. The weight ratio of the polycarbonate component to the graphite component is in the range of 90:10 to 10:90. When the weight ratio of the polycarbonate component to the graphite component is more than 90:10, the releasability of the injection molded product is slightly poor. When the weight ratio of the polycarbonate component to the graphite component is more than 10:90, the toughness of the injection molded product is poor. The combination of the polycarbonate component and the graphite component can be determined as described below. That is, when manufacturing an injection molded product with a simple structure and a large volume, a combination of a polycarbonate component with a large graphite volume percentage and a graphite component can be selected from the table below. At this time, for example, when the combination of graphite body tar% is selected as 70%, 1 5 4 0 g graphite and 3 6 9 g polycarbonate can be mixed. In addition, the following table shows the blending amount (g) of graphite and polycarbonate corresponding to the percentage of graphite volume fraction when the total volume fraction is 1000 cm3. In addition, when producing an injection-molded product having a complicated structure and a small volume, a combination of a polycarbonate component with a small graphite body percentage and a graphite component can be selected.
In I — - 1 - —.1 ― ·、 — n^i ! :--1-, HI - ^-- 1— -I .. ——I HI Γ (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標隼（CNS ) A4規格（210X297公釐〉 五、發明说明（4 A7 B7 表1 石墨與聚碳酸酯的配合量 石墨 體稹％ 石墨 (^) 樹 ( SS s ) 體積％ 石δα ο ο o rtv nu Ti J4 〆0 oci 2 4. 6 s ΛΛ 〇c3 1i CJ tΛ? 1 J-Λ 11*« · 1—*-·* 經濟部中央標隼局員工消費合作社印製 10 11 12 13 14 15 16 IT 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34In I —-1-—.1 ― · 、 — n ^ i!:-1-, HI-^-1— -I .. ——I HI Γ (Please read the notes on the back before filling in this Page) This paper scale is applicable to China National Standard Falcon (CNS) A4 specification (210X297mm). V. Description of the invention (4 A7 B7 Table 1 The amount of graphite and polycarbonate blended Graphite 縹% graphite (^) tree (SS s ) Volume% stone δα ο ο o rtv nu Ti J4 〆0 oci 2 4. 6 s ΛΛ 〇c3 1i CJ tΛ? 1 J-Λ 11 * «· 1 — *-· * Employee Consumer Cooperative of the Central Standard Falcon Bureau of the Ministry of Economic Affairs Printed 10 11 12 13 14 15 16 IT 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
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Ο 251 0 240.0 228. 9 ci od >.0'1 r>! oo 6 cv 14 -JJ '1*圓· -·1-« 120. 0 108. 0 96. 0 24. 0 11 0 60. 0 44 0 35. 0 24.0 11 G 0.0 (請先閱讀背面之注意事項再填寫本頁) -i I! -1 I— - — - - In I,. ‘ -裝---- 線 本紙張尺度適用中國國家標隼（CNS ) A4規格（210X297公董） A7 B7 五、發明説明（5 ) 藉由圖3說明使用此法所得到的含石墨塑膠製錠片材 料1 7 ，製作射出成形物的方法。 如圓3所示，射出成形機3 0具有於射出汽缸3 4內 設置可自由滑動的射出桿3 5 ，中間有驅動軸3 8旋轉軀 動射出桿3 5的油壓馬達3 7。射出桿3 5與螺旋3 2相 連接，機桶3 6內配置螺旋3 2。螺旋3 2係由漏斗3 1 供給含石墨塑膠製錠片材料1 7。同時，螺旋3 2的前端 有噴嘴3 9 ，噴嘴3 9與由固定模4 0及可動模4 1所構 成的金屬模連接。 其次說明射出成形的方法。首先，漏斗31內塡充含 石墨塑膠製錠片材料，再藉由油壓馬達3 7，射出桿3 5 ，旋轉螺旋3 2。其間螺旋3 2內供給含石墨塑膠製錠片 材料1 7，旋轉螺旋3 2使含石墨塑膠製錠片材料1 7中 的聚碳酸酯成分，產生熔融。其次熔融的聚碳酸酯內含有 粉狀石墨的混合物，經噴嘴射出至固定模4 0與可動模 4 1之間的模槽內，得到由聚碳酸酯與石墨所構成的射出 成形物。 經濟部中央標準局員工消費合作社印製 (請先閱讀背面之注意事項再填寫本頁) 射出成形物中聚碳酸酯具有優異的耐熱性且軔性高的 特性。 粉狀石墨爲六方晶系材料，且硬度爲1 . 5 ，比重爲 2. 2。石墨具有儍異的耐熱性，同時，由結晶構造所產 生的優異的潤滑性（剝離性）。又，石墨具有在高溫時機 械性强度變大，不溶於有機溶劑及無機溶劑的特性。 又，聚碳酸酯與石墨，如上述彼此不產生化學反應， 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 經濟部中央標準局員工消費合作社印製 295596 A7 ___ B7_ 五、發明説明（6 ) 各自具有固有的特性。 因此，聚碳酸酯與石墨所構成的射出成形物爲耐熱性 優且潤滑性優之成形物。所以，例如以聚碳酸酯及石墨所 構成的射出成形物製作鋁模鑄鏞造用的型蕊時，可得到耐 熱性優且潤滑性優之型蕊。加熱鋁模縳鑄造物使聚碳酸酯 熔融流出，然後將鋁模鑄縳造物浸溃於溶劑中，使聚碳酸 酯溶離於溶劑中，同時，可使石墨容易於溶劑中流出。此 時，於溶劑中聚碳酸酯熔融後上浮，石墨不溶於溶劑中， 沈澱於底部。又石墨具有潤滑性，故鋁模鏞縳造物內無型 蕊的局部殘留。 射出成形物中，聚碳酸酯與石墨的重量比爲9 0 : 1 0時，因聚碳酸酯的韌性，故可得到較高强度的射出成 形物。聚碳酸酯與石墨的重量比爲1 0 : 9 0時，聚碳酸 酯具有連接石墨之間的粘著劑功能，但超過此石墨置時， 射出成形物的强度降低。 其次說明本發明的變形例。使用聚碳酸酯做爲含石墨 塑膠製錠片材料的塑膠成分的變形例，除此之外尙可使用 四氟化乙烯樹脂等的含氧樹脂（聚氟乙烯樹脂），聚亞醯 胺樹脂，聚醯胺亞醯胺樹脂，聚破樹脂，氯化乙烯樹脂， 聚醯胺樹脂（Ny丨on樹脂），聚丙烯樹脂，聚乙烯樹脂， 聚酯樹脂（Tetron樹脂），或聚磺酸樹脂。 如上述說明，藉由本發明可得到剝離性良好且機械性 强度優之射出成形物。例如利用此射出成形物製造模鑄鑄 造物的型蕊時，型蕊可容易地自模鑄鑄造物中抽出。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） --1 1- *- - 1:1 —·— I -- I —l· I 士^in ml I I - - - I - - I T* - - I I— n I (請先閱讀背面之注意事項再填寫本頁) B7五、發明説明（7 ) 圖 法 方 造 製 的 料 材 片 錠 製 膠 塑 。 墨 圖 石 。 細 j 含圖詳 明 的細的 說 明詳機 單發 的 形1 簡本 機 成明 的}示}出1 出說 面 1 表 2 擠 3 射號 圚圖 圖 圓 ⑪ 擠出機 台 單絲狀混合物 旋轉刀 製錠片機含石墨塑膠製錠片材料漏斗 旋 螺 8 2 . ^ ·裝-- (請先閱讀背面之注意事項再填寫本頁) ΤΓ 經濟部中央標隼局員工消費合作杜印製 本紙乐尺度適用中國國家標準（CNS ) A4規格（210X297公釐）1200. Q 1188, 0 1176. 0 1164 0 1151G 1140.0 1128. fl 11110 1104.'3 10910 108fl, Q 1068.0 1056.0 1044. Q mi ΰ 1020. 0 1008. 0 996. 0 984. 0 971 0 960.0 945. Q 936.0 924 0 9110 900. 0 S88, 0 876. 0 864, 0 8510 840, 082a 0 816. 0 804. 07310 I 5 ro 7— 8 Qv nv '— * 9 «To 4 · KJ ro 7- oo o > ΛΟ n TJ i4 3 TJ T3 4 ^ * 4 * »4 * 4 * 4 * 4 > cl- -D ζν 7f oo OJ Λυ Ti 9« TJ -r > -ΓΛ ---- Λ -3 6 ro 6 r5 770. 0 780. 0 791 Q 758. 0 814. 0 75i 0 836. 0 744. 0 858,0 731 0 880.0 720. 0 902.0 70i 0 924,0 S96. 0 945 · 0 584. 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China National Standard Falcon (CNS) A4 specification (210X297 company director) A7 B7 5. Description of the invention (5) The method of manufacturing the injection-molded article is illustrated in FIG. 3 using the graphite-containing plastic ingot material 17 obtained by this method . As indicated by circle 3, the injection molding machine 30 has a hydraulic motor 3 7 in which an injection rod 3 5 is provided in the injection cylinder 3 4 so as to be freely slidable, and a drive shaft 38 rotates the injection rod 35 in the middle. The injection rod 3 5 is connected to the screw 3 2, and the screw 3 2 is arranged in the barrel 36. The screw 32 is supplied from the funnel 3 1 with graphite-containing plastic ingot material 17. At the same time, the front end of the screw 3 2 has a nozzle 3 9. The nozzle 3 9 is connected to a metal mold composed of a fixed mold 40 and a movable mold 4 1. Next, the injection molding method will be described. First, the funnel 31 is filled with graphite plastic ingot material, and then the hydraulic motor 3 7 ejects the rod 3 5 and rotates the screw 3 2. In the meantime, the screw 3 2 supplies the graphite-containing plastic ingot material 17, and the rotating screw 3 2 causes the polycarbonate component in the graphite-containing plastic ingot material 17 to melt. Next, the molten polycarbonate contains a mixture of powdery graphite, which is injected through a nozzle into the cavity between the fixed mold 40 and the movable mold 41, to obtain an injection molded product composed of polycarbonate and graphite. Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page). Polycarbonate in injection molding has excellent heat resistance and high qualities. Powdered graphite is a hexagonal crystal material with a hardness of 1.5 and a specific gravity of 2.2. Graphite has stupid heat resistance, and at the same time, excellent lubricity (peelability) due to the crystal structure. In addition, graphite has a characteristic that its mechanical strength becomes high at high temperatures and is insoluble in organic solvents and inorganic solvents. In addition, polycarbonate and graphite do not react with each other as described above. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm). 295596 A7 ___ B7_ Printed by the Employees Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. Description of the invention (6) Each has inherent characteristics. Therefore, the injection molded article made of polycarbonate and graphite is a molded article excellent in heat resistance and lubricity. Therefore, for example, when an injection molded article made of polycarbonate and graphite is used to produce a core for aluminum die casting, a core with excellent heat resistance and excellent lubricity can be obtained. Heating the aluminum mold casting to melt out the polycarbonate, and then immersing the aluminum mold casting in the solvent to dissolve the polycarbonate in the solvent, and at the same time, allow graphite to easily flow out of the solvent. At this time, the polycarbonate melts in the solvent and floats up, graphite is insoluble in the solvent, and precipitates at the bottom. Graphite has lubricity, so there is no residual part of the core in the aluminum mold. In the injection molded product, when the weight ratio of polycarbonate to graphite is 90:10, due to the toughness of the polycarbonate, an injection molded product with higher strength can be obtained. When the weight ratio of polycarbonate to graphite is 10:90, polycarbonate has an adhesive function to connect graphite, but if it exceeds this graphite setting, the strength of the injection molded article decreases. Next, a modification of the present invention will be described. A modified example of using polycarbonate as the plastic component of graphite-containing plastic ingot materials. In addition, oxygen-containing resin (polyvinyl fluoride resin) such as tetrafluoroethylene resin and polyimide resin can be used. Polyamide amide amide resin, polybroken resin, vinyl chloride resin, polyamide resin (Nyion resin), polypropylene resin, polyethylene resin, polyester resin (Tetron resin), or polysulfonic acid resin. As described above, according to the present invention, it is possible to obtain an injection-molded article having good peelability and excellent mechanical strength. For example, when the core of a die-cast casting is manufactured using this injection molded product, the core can be easily extracted from the die-cast casting. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) --1 1- *--1: 1 — · — I-I —l · I ^ in ml II---I-- IT *--II— n I (please read the precautions on the back before filling in this page) B7 5. Description of the invention (7) The material is made of plastic ingots made of graphs and recipes. Mexican figure stone. Thin j Detailed description of the machine with a detailed description of the machine's single-shot shape 1 Brief description of the machine} Show 1 out of the face 1 Table 2 Extrusion 3 Shot No. 圚 图 图 圆 ⑪ Single filament mixture of extruder Rotary knife ingot making machine containing graphite plastic ingot material funnel screw 8 2. ^ · Installation-(please read the precautions on the back before filling this page) ΤΓMinistry of Economic Affairs Central Standard Falcon Bureau employee consumption cooperation The standard of this paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm)