1359736 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種聚苯乙烯發泡體模心複合物，尤其係指一種具離型 膜之聚苯乙烯發泡體模心複合物’其係應用於固體火箭推進劑藥柱之模心。 【先前技術】1359736 IX. OBJECTS OF THE INVENTION: TECHNICAL FIELD The present invention relates to a polystyrene foam core compound, and more particularly to a polystyrene foam core compound having a release film. It is applied to the core of a solid rocket propellant grain. [Prior Art]
近年來’為了固體火箭推進劑能充份點燃及持續燃燒，環槽形内燃式 組合推進劑設計已成趨勢主流。一般來說，環槽形推進劑成形方式包括纏 繞式、可拆式及可溶性模心等各式方法。 習知技術(一)纏繞式模心之成形方法，如美國專利第3952627號「固態 推進劑火箭發動機之環槽成型組合構造」，係利用繩索纏繞方式形成預定形 狀之模心，以供在填充推進劑時形成圓柱孔及環槽。在脫模時，僅需逐一 將繩索順勢抽出，即可完成環槽形及圓柱孔之製作。但當推進劑填充太緊 密時’繩索將難以順出’且當推進劑填充太鬆散時，抽出繩索將破壞 環槽内壁。 習知技術(-)可拆式模々之成形方法，如美國專娜5714Q81號「可拆 式機械模心及其實施方法」，係___轴心搭配數個互補模件，該互補模件 尺寸不同彳―相互堆疊後可組成完整的圓柱孔及環槽形狀。但使用此方法 取出互補模件之施力角度必須精準，否則料毁損推賴之環槽形狀，所 以操作難度高且良率低。 習知技術㈢可雜模妓成形方法，如美財·观通號「火葡 發動機之絲推補」，侧祕_如鱗縣轉錄作雜心，可供 ==(鑄藥)時形成圓柱孔及環槽。接著，用熱水雌，黏附於藥扫 水銀清除。但在高溫財""進行聰存㈣炸的風險， 同時水銀具尚度毒性不適合長期使用。 號專容性模d形方法，如中華民_4)發㈣23519: 號專利X箭推進劑之成形方法及其裂置」，係利用—轴心、數組聚笨乙辦 1359736 發泡體(PS Foam)可溶性模心模環及墊塊，形成環槽蜇推進劑。但在脫模時 .· 必須使用有機溶劑溶解聚苯乙烯發泡體模心，但溶劑對藥柱會造成不良影 響’並也常發現聚苯乙烯發泡體模心會斷裂並殘留在藥柱面上。 最近’習知技術(五)Teflon貼合聚苯乙烯發泡體(ps Foam)模心之成形方 法’係利用比照類似保鮮膜裹住食物一般，發展出另種PS Foam模心外層 再貼合一層鐵氟龍(Teflon)薄膜(厚度300μτη)，該具有鐵氟龍(Teflon)薄膜之 PS Foam模心可供在填充推進劑(鑄藥)時形成圓柱孔及環槽型推進劑。但 Teflon薄膜成本較高且厚度較厚(3〇〇卿），故會導致裝藥量的減少。 因此，為改進先前技藝之缺失’本發明形成一離型膜包覆於該聚苯乙 ® 烯發泡體模心之表面，形成一具離型膜之聚苯乙烯發泡體模心複合物，由 於該離型膜之表面具有奈米規則排列的粗糙結構及低表面能量（高接觸 角）’故該具離型膜之聚苯乙烯發泡體模心複合物能輕易脫離藥柱，以形成 環槽推進劑，且本發明並不具有上述習知技術之缺點。 【發明内容】 本發明之主要目的在於提供一種具離型臈之聚苯乙烯發泡體模心複合 物，其能輕易的脫離藥柱，形成環槽推進劑，以解決習知技術聚苯乙烯發 ^ 泡體模心不易脫離藥柱之問題。 本發明之次要目的在於提供一種具離型膜之聚苯乙烯發泡體模心複合 物，其不需在聚苯乙烯發泡體模心外層再貼合一層鐵氟龍(Tefl〇n)薄膜，故 能減少成本，且能增加固體火箭中環槽推進劑之含量。 本發明係關於一種聚苯乙烯發泡體模心複合物及其製備方法，該具離 型膜之聚苯乙烯發泡體模心複合物，包括：一聚苯乙烯發泡體模心；及一 離型膜係包覆於該聚苯乙稀發泡體模心之表面。該具離型膜之聚苯乙稀發 泡體模心複合物之製備方法，其步驟包括：將第一樹脂、第二樹脂及含石夕 氧粉末混合均勻成-漿液；將該漿液塗佈於一聚苯乙稀發泡體模心之表 面；及熟化後得到一具離型膜之聚苯乙烯發泡體模心複合物；其中該第一In recent years, in order to fully ignite and sustain combustion of solid rocket propellants, the design of ring-shaped internal combustion combined propellant has become the mainstream. In general, the ring-shaped propellant forming method includes various methods such as a entangled type, a detachable type, and a soluble mold core. Conventional Technology (1) A method of forming a wound core, such as the "ring groove forming combined structure of a solid propellant rocket engine" of U.S. Patent No. 3,952,627, which uses a rope winding method to form a core of a predetermined shape for filling. The cylindrical hole and the ring groove are formed when the propellant is used. When demoulding, it is only necessary to pull out the rope one by one to complete the production of the ring groove shape and the cylindrical hole. However, when the propellant is too tightly packed, the rope will be difficult to pass out and when the propellant fill is too loose, pulling out the rope will damage the inner wall of the ring groove. Conventional technology (-) detachable mold forming method, such as the US detached model 5714Q81 "detachable mechanical core and its implementation method", is ___axis with several complementary modules, the complementary module The dimensions of the pieces are different - they can be stacked to form a complete cylindrical hole and ring groove shape. However, the angle of application of the complementary module must be accurate by using this method. Otherwise, the shape of the ring groove is damaged by the material, so that the operation is difficult and the yield is low. Conventional technology (3) can be used to form a mold, such as the US Treasury · Guantong No. "The shredded engine of the fire and the engine", the side secret _ such as the scale county transcription for miscellaneous, available for == (casting) when forming a cylinder Holes and ring grooves. Next, use hot water to remove the female and stick to the medicine to remove the mercury. However, in the high temperature, the risk of Congchuang (four) bombing, while mercury is not suitable for long-term use. No. Convenient model d-shaped method, such as Chinese people _4) hair (four) 23519: Patented X-ray propellant forming method and its cracking, using the shaft-axis, array poly-bundle 1359736 foam (PS Foam) a soluble core mold ring and a spacer to form a ring grooved propellant. However, during demolding, the organic solvent should be used to dissolve the polystyrene foam core, but the solvent will have an adverse effect on the column. It is also often found that the polystyrene foam core breaks and remains on the grain. On the surface. Recently, the 'practical technology (5) Teflon-bonded polystyrene foam (ps Foam) mold-forming method' is based on the use of similar plastic wrap to wrap the food, and develops another PS Foam core outer layer to fit. A layer of Teflon film (thickness 300μτη), the PS Foam core with Teflon film can be used to form a cylindrical hole and a ring-shaped propellant when filling the propellant (casting). However, Teflon film is costly and thick (3 〇〇 )), which leads to a reduction in the amount of charge. Therefore, in order to improve the lack of the prior art, the present invention forms a release film coated on the surface of the die of the polystyrene foam to form a polystyrene foam core compound having a release film. Since the surface of the release film has a nanometer regular arrangement of a rough structure and a low surface energy (high contact angle), the polystyrene foam core compound having the release film can be easily separated from the drug column. The ring groove propellant is formed, and the present invention does not have the disadvantages of the above-described prior art. SUMMARY OF THE INVENTION The main object of the present invention is to provide a polystyrene foam core compound with a release liner, which can be easily separated from the drug column to form a ring groove propellant to solve the conventional technical polystyrene. It is not easy to get rid of the drug column. A secondary object of the present invention is to provide a polystyrene foam core compound having a release film which does not need to be laminated with a layer of Teflon (Tefl〇n) in the outer layer of the polystyrene foam core. The film can reduce the cost and increase the content of the ring groove propellant in the solid rocket. The present invention relates to a polystyrene foam core compound and a preparation method thereof, the polystyrene foam core compound having a release film comprising: a polystyrene foam core; A release film is coated on the surface of the mold core of the polystyrene foam. The method for preparing a polystyrene foam core-molded composite having a release film, comprising the steps of: uniformly mixing a first resin, a second resin, and a rock-containing oxygen powder into a slurry; coating the slurry Forming a surface of a polystyrene foam core; and aging to obtain a release film of a polystyrene foam core compound; wherein the first
6 I359736 樹脂係選自矽樹酯及環氧樹脂所組成之群組之其中之一者；其中該第二樹 脂係選自環氧樹脂及聚醋酸乙烯樹脂所組成之群組之其中之一者；其中該 含碎氧粉末係選自二氧化矽(si〇2)、白烟(Cab_0_Sil)及滑石粉所組成之群組 之其中之一者；及其中該第一樹脂、該第二樹脂及該含石夕氧粉末之重量比 為 10:10-20:1-15。 【實施方式】 茲為使貴審查委員對本發明具離型膜之聚笨乙烯發泡體模心複合物 及其製備方法之特徵及步驟有更進一步之瞭解與認識，現將詳細設計之原 理及本發明之較佳實施例說明如後。 大自然中，我們注意到植物葉面常可保持潔淨而不被沾污，此種特性 經多年探討發現，與葉面上具有奈米規則排列的粗糙結構表面結構及低表 面能量（高接觸角）有關。由於漿狀藥柱未熟化時，具有移動的特性，其易 於滲入聚苯乙烯發泡體模心形成錨狀構造，而導致藥柱熟化後不易和聚苯 乙烯發泡體模心脫模，本發明利用離型膜之奈米級粗糙度及高接觸角之特 性，將離型膜覆於聚苯乙烯發泡體模心之表面，使聚苯乙烯發泡體模心能 輕易和藥柱分離，達到容易脫模之目的。 本發明具離型膜之聚苯乙烯發泡體模心複合物，包括：一聚苯乙稀發 泡體模心；及一離型膜係包覆於該聚苯乙烯發泡體模心之表面。其中該離 型膜，包括：第一樹脂、第二樹脂及含矽氧粉末；其中該第一樹脂係選自 矽樹酯及環氧樹脂所組成之群組之其中之一者；其中該第二樹脂係選自環 氧樹脂及聚醋酸乙烯樹脂所組成之群組之其中之一者；其中該含矽氧粉末 係選自二氧化石夕(Si〇2)、白烟(Cab-0-Sil)及滑石粉所組成之群組之其中之一 者；及其中該第一樹脂、該第二樹脂及該含矽氧粉末之重量比為 10:10-20:1-15。 ~ 其中該矽樹脂、該環氧樹脂及該二氧化矽之較佳重量比為1〇:2〇:1〇;其 中該矽樹脂、該聚醋酸乙烯樹脂及該白烟(Cab_〇_si丨)之較佳重量比^ 7 1359736 10:10:5 ;其中該環氧樹脂、該聚醋酸乙烯樹脂及該滑石粉之較佳重量比為 10:20:15 ;其中該第一樹脂、該第二樹脂及該含矽氧粉末之組成外更包括另 一二氧化妙之成份’且其中該梦樹脂、該聚醋酸乙烯樹脂、該白烟(Cab_〇_si〇 及該另一二氧化矽之較佳重量比為10:10:1:5 ;其中該具離型膜之聚苯乙烯 發泡體模心複合物之表面粗链度為540-750 nm ;其中該具離型膜之聚苯乙 烯發泡體模心複合物之接觸角為113_123度。其中矽樹酯之黏度為 60000-120000 C.p·;該環氧樹酯之黏度為2〇〇〇〇_6〇〇〇〇 c p及該聚醋酸乙烯樹 酯之黏度為10000-18000 c.p.。該具離型膜之聚苯乙稀發泡體模心複合物之 表面粗糙度為500-850 nm，且其接觸角為10〇·13〇度。 本發明具離魏之料乙烯發缝細複合物之製備方法，其步驟包 括： S1將第一樹脂、第二樹脂及含矽氧粉末混合均勻成一漿液； S2將該漿液塗佈於一聚苯乙烯發泡體模心之表面，·及 S3熟化後得到-具離型膜之聚苯乙稀發泡體模心複合物；6 I359736 resin is one of a group consisting of eucalyptus and epoxy resin; wherein the second resin is selected from the group consisting of epoxy resin and polyvinyl acetate resin. Wherein the powder containing oxygen is selected from the group consisting of cerium oxide (si〇2), white smoke (Cab_0_Sil) and talc; and the first resin, the second resin and The weight ratio of the stone-containing oxygen powder is from 10:10 to 20:1 to 15. [Embodiment] In order to enable the reviewing committee to further understand and understand the characteristics and steps of the polystyrene foam core compound with release film of the present invention and the preparation method thereof, the principle of detailed design and Preferred embodiments of the invention are described below. In nature, we noticed that the foliage of plants can always be kept clean and not stained. This property has been discovered for many years, and it has a rough surface structure and low surface energy (high contact angle) with regular arrangement of nanometers on the leaf surface. )related. Since the slurry column has a moving property when it is not matured, it is easy to infiltrate into the mold core of the polystyrene foam to form an anchor-like structure, and it is difficult to release the mold core from the mold after being matured. In the invention, the release film is coated on the surface of the mold core of the polystyrene foam by utilizing the characteristics of the nanometer roughness and the high contact angle of the release film, so that the polystyrene foam core can be easily separated from the drug column. , to achieve the purpose of easy demoulding. The polystyrene foam core compound with a release film of the present invention comprises: a polystyrene foam core; and a release film coated on the mold core of the polystyrene foam surface. Wherein the release film comprises: a first resin, a second resin and a cerium-containing oxygen powder; wherein the first resin is one selected from the group consisting of eucalyptus and epoxy; The second resin is selected from the group consisting of epoxy resin and polyvinyl acetate resin; wherein the oxygen-containing powder is selected from the group consisting of dioxide (Si〇2) and white smoke (Cab-0-). And one of the group consisting of Sil) and talc; and the weight ratio of the first resin, the second resin and the cerium-containing powder is 10:10-20:1-15. The preferred weight ratio of the enamel resin, the epoxy resin and the cerium oxide is 1〇:2〇:1〇; wherein the enamel resin, the polyvinyl acetate resin and the white smoke (Cab_〇_si)较佳) preferred weight ratio ^ 7 1359736 10:10:5; wherein the epoxy resin, the polyvinyl acetate resin and the talc preferably have a weight ratio of 10:20:15; wherein the first resin, the first resin The second resin and the composition of the cerium-containing oxygen powder further comprise another oxidizing component' and wherein the dream resin, the polyvinyl acetate resin, the white smoke (Cab_〇_si〇 and the other dioxide The preferred weight ratio of ruthenium is 10:10:1:5; wherein the surface of the polystyrene foam core-molded composite having a release film has a surface roughness of 540-750 nm; wherein the release film has a release film The contact angle of the polystyrene foam core compound is 113_123 degrees, wherein the viscosity of the eucalyptus ester is 60000-120000 Cp·; the viscosity of the epoxy resin is 2〇〇〇〇_6〇〇〇〇cp And the viscosity of the polyvinyl acetate resin is 10000-18000 cp. The surface roughness of the polystyrene foam core-molded composite with a release film is 500-850 nm, and the contact angle is 10 The method for preparing the ethylene hairline fine composite of the invention has the following steps, the steps comprising: S1 mixing the first resin, the second resin and the cerium-containing oxygen powder into a slurry; S2 coating the slurry On the surface of a polystyrene foam core, and after S3 is matured, a polystyrene foam core compound having a release film is obtained;
其中該第-樹脂係選自頻醋及環氧樹脂所組成之群組之其中之一 者；其中該第二樹脂係選自環氧樹脂及聚醋酸乙烯樹脂所組成之群組之其 中之者’其中該3石夕氧粉末係選自二氧化碎(⑽2)、白烟(⑽_〇沿1)及滑 石粉所組成之群組之其中之-者；及其中該第-繼、該第二樹脂及該含 之4量比為1G:1G2G:1_15°si步射係使用葉片式授伴機混 σ、該葉片式餅機之轉速為1000_2000rpm，混合時間為分鐘； S3步驟中熟化溫度為3G_4Qt，熟化時間為3_4小時。 第一實施例 南曹八·D〇w C〇ming公司’黏度ioooooc.p.)、環氧樹脂(廠商： 仿Η又4000〜.)及二氧化石夕粉(廠商：國聯公司，粒徑：0.2_15_’ 轉速授伴12列、10 2〇:1〇’放入混料容器中，以一般葉片式授伴機’ 以 1500rpm 模‘表面]合均勻成膏㈣液’再關刀塗抹在聚苯乙稀發泡體 、 ’之後放人供箱熟化(3〇t/3hr)後取出試件，量測之接觸角為 8 1359736 113.5度，表面粗糙度為540nm，其藥柱脫模實驗如第二圖所示實驗顯示 具離型膜之聚苯乙稀發泡體模心複合物1和藥柱2之脫模效果良好。 第二實施例 將矽樹脂(廠商：Dow Coming公司，黏度100000cp )、聚醋酸乙烯樹 脂(廠商：優越公司，黏度14000c.p.)及白烟(Cab-O-Sil)粉，廠商：WACKER 公司，粒徑：10-500 nm)，依據重量比例ι〇:1〇:5，放入混料容器中，以一 般葉片式攪伴機，以2000 rpm轉速攪伴5分鐘，混合均勻成膏狀漿液，再 用刮刀塗抹在聚苯乙稀發泡體模心之表面上，之後放入烘箱熟化(4〇Cc/4hr) 後取出試件，量測之接觸角為122_6度，表面粗糙度為56〇舰，其藥塊脫 模實驗如第三圖所示，實驗顯示具離型膜之聚苯乙烯發泡體模心複合物i 和藥柱2之脫模效果不錯，藥柱2只黏著少數具離型膜之聚苯乙烯發泡體 模心複合物1。 第三實施例 將環氧樹脂(薇商：南寶公司’黏度4〇〇〇〇c.p.)、聚醋酸乙烯樹脂(廠商： 優越公司，黏度14000C.P.)及滑石粉(廠商：裕盛公司，粒徑：〇 5_6〇哗）， 依據重量比例10:20:15’放入混料容器中，以一般葉片式攪伴機，以12〇〇rpm 轉速授伴15分鐘，混合均勻成膏狀漿液，再用刮刀塗抹在聚苯乙稀發泡體 模心之表面上’之後放入烘箱熟化(35t：/4hr)後取出試件，量測之接觸角為 115度’表面粗糙度為680 nm，其藥塊脫模實驗如第四圖所示，實驗顯示 具離型膜之聚苯乙烯發泡體模心複合物1和藥柱2之脫模效果不錯，藥柱2 只黏著一點狀的具離型膜之聚苯乙烯發泡體模心複合物i。 第四實施例 將妙樹脂(廠商：Dow Coming公司，黏度lOOOOOc.p.)、聚醋酸乙烯樹 脂(薇商：優越公司，黏度14000c.p.)、白烟(Cab-0-Sil)粉，廠商：WACKER 公司，粒徑：10-500nm)及二氧化矽粉，依據重量比例1〇: 1〇士5，放入混料 容器中，以一般葉片式攪伴機，以1〇〇〇 rpm轉速攪伴1〇分鐘，混合均勻成 膏狀漿液，再用刮刀塗抹在聚苯乙稀發泡體模心之表面上，之後放入烘箱 1359736 熟化(35°C/3hr)後取出試件’量測之接觸角為12〇度，表面粗糙度為75〇細， 其藥塊脫模實驗如第五圖所示，實驗顯示具離型膜之聚苯乙烯發泡體模心 複合物1和藥柱2之脫模效果良好。 綜上所述，本發明具離型膜之聚苯乙烯發泡體模心複合物及其製備方 法可以使聚苯乙烯發泡體模心易於脫離藥柱，且不需在聚苯乙烯發泡體模 心外層貼合一層鐵氟龍(Teflon)薄膜’故能減少成本，並能增加固體火箭中 環槽推進劑之含量。 惟以上所述者，僅為本發明具離型膜之聚苯乙烯發泡體模心複合物及 其製備方法之較佳實施例而已，並非用來限定本發明實施之範圍，舉凡依 本發明申請專利範圍所述之構造、特徵及精神所為之均等變化與修飾，均 應包括於本發明之申請專利範圍内。 【圖式簡單說明】 第一圖為本發明具離型膜之聚苯乙烯發泡體模心複合物之製備方法之步驟 流程圖。 第二圖為本發明具離型膜之聚苯乙烯發泡體模心複合物及其製備方法之第 一實施例之藥柱脫模實驗圖。 第三圖為本發明具離型膜之聚苯乙烯發泡體模心複合物及其製備方法之第 二實施例之藥柱脫模實驗圖。 第四圖為本發明具離型膜之聚苯乙烯發泡體模心複合物及其製備方法之第 三實施例之藥柱脫模實驗圖。 第五圖為本發明具離型膜之聚苯乙烯發泡體模心複合物及其製備方法之第 四實施例之藥柱脫模實驗圖。 【主要元件符號說明】 1具離型臈之聚苯乙烯發泡體模心複合物Wherein the first resin is selected from the group consisting of vinegar and epoxy resin; wherein the second resin is selected from the group consisting of epoxy resin and polyvinyl acetate resin. Wherein the 3 stone oxygen powder is selected from the group consisting of dioxide ((10)2), white smoke ((10)_〇1), and talc; and the first and second The ratio of the two resins and the content of the four is 1G: 1G2G: 1_15°si step shooting system uses a blade type machine to mix σ, the speed of the blade type cake machine is 1000_2000 rpm, the mixing time is minutes; the curing temperature in the step S3 is 3G_4Qt, the ripening time is 3_4 hours. The first embodiment is Nancao Ba·D〇w C〇ming company 'viscosity ioooooc.p.), epoxy resin (manufacturer: imitation Η and 4000~.) and dioxide powder (manufacturer: Guolian Company, particle size :0.2_15_' Speed is accompanied by 12 columns, 10 2〇: 1〇' put into the mixing container, and the general blade type feeder is used to mold the surface at 1500 rpm and evenly form a paste (4) liquid. The polystyrene foam, 'after the person is put into the box for aging (3〇t/3hr), the test piece is taken out, the contact angle measured is 8 1359736 113.5 degrees, the surface roughness is 540nm, and the drug column demoulding experiment As shown in the second figure, the experiment shows that the release effect of the polystyrene foam core compound 1 and the drug column 2 with the release film is good. The second embodiment will be a resin (manufacturer: Dow Coming, viscosity) 100000cp), polyvinyl acetate resin (vendor: superior company, viscosity 14000c.p.) and white smoke (Cab-O-Sil) powder, manufacturer: WACKER company, particle size: 10-500 nm), according to the weight ratio ι〇 :1〇:5, put into the mixing container, stir with a general blade type stirrer at 2000 rpm for 5 minutes, mix evenly into a paste slurry, and then use a scraper Wipe on the surface of the die of the polystyrene foam, then put it into the oven for aging (4〇Cc/4hr) and take out the test piece. The contact angle is 122_6 degrees and the surface roughness is 56〇. The demolding test of the drug block is shown in the third figure. The experiment shows that the release effect of the polystyrene foam core compound i and the drug column 2 with the release film is good, and the drug column 2 adheres to a few release films. Polystyrene foam core compound 1 . The third embodiment will be epoxy resin (Wei Shang: Nanbao Company 'viscosity 4 〇〇〇〇 cp), polyvinyl acetate resin (vendor: superior company, viscosity 14000 C.P.) and talcum powder (vendor: Yusheng company, Particle size: 〇5_6〇哗), placed in a mixing container according to the weight ratio of 10:20:15', with a general blade type stirrer, at 12 rpm for 15 minutes, mixed evenly into a paste slurry Then, apply the squeegee on the surface of the mold core of the polystyrene foam. After the oven is aged (35t: /4hr), the test piece is taken out and the contact angle measured is 115 degrees. The surface roughness is 680 nm. The demolding test of the drug block is shown in the fourth figure. The experiment shows that the release effect of the polystyrene foam core compound 1 and the drug column 2 with the release film is good, and the drug column 2 is only slightly adhered. Polystyrene foam core complex i with release film. The fourth embodiment will be a wonderful resin (manufacturer: Dow Coming, viscosity lOOOOOc.p.), polyvinyl acetate resin (Wei Shang: superior company, viscosity 14000 c.p.), white smoke (Cab-0-Sil) powder, Manufacturer: WACKER company, particle size: 10-500nm) and cerium oxide powder, according to the weight ratio of 1〇: 1 gentleman 5, put into the mixing container, with a general blade type stirring machine, 1 rpm Stir the mixture for 1 minute, mix evenly into a paste slurry, and then apply it to the surface of the die of the polystyrene foam with a spatula, then put it into the oven 1359736 and mature (35 °C / 3hr) and take out the test piece' The contact angle of the measurement is 12 ,, the surface roughness is 75 〇, and the demolding test of the medicinal block is as shown in the fifth figure. The experiment shows the polystyrene foam core compound 1 with a release film and The release effect of the drug column 2 is good. In summary, the polystyrene foam core compound having the release film of the present invention and the preparation method thereof can make the polystyrene foam core easy to be separated from the drug column, and do not need to be foamed in polystyrene. The outer core of the body mold is laminated with a layer of Teflon film, which can reduce the cost and increase the content of the ring groove propellant in the solid rocket. However, the above description is only a preferred embodiment of the polystyrene foam core compound having the release film of the present invention and a preparation method thereof, and is not intended to limit the scope of the practice of the present invention. Equivalent changes and modifications to the structures, features, and spirits described in the claims are intended to be included within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a flow chart showing the steps of a method for preparing a polystyrene foam core compound having a release film of the present invention. The second figure is a demoulding experiment diagram of the drug column of the first embodiment of the polystyrene foam core compound having a release film of the present invention and a preparation method thereof. Fig. 3 is a view showing the demolding of the drug column of the second embodiment of the polystyrene foam core compound having the release film of the present invention and the preparation method thereof. Fig. 4 is a view showing the demolding of the drug column of the third embodiment of the polystyrene foam core compound having the release film of the present invention and the preparation method thereof. Fig. 5 is a view showing the demolding of the drug column of the fourth embodiment of the polystyrene foam core compound having the release film of the present invention and the preparation method thereof. [Main component symbol description] 1 release styrofoam foam core compound