TWI789455B - 預浸體、纖維強化複合材料及成形體 - Google Patents

預浸體、纖維強化複合材料及成形體 Download PDF

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TWI789455B
TWI789455B TW107140321A TW107140321A TWI789455B TW I789455 B TWI789455 B TW I789455B TW 107140321 A TW107140321 A TW 107140321A TW 107140321 A TW107140321 A TW 107140321A TW I789455 B TWI789455 B TW I789455B
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mass
fiber
reinforced composite
resin composition
composite material
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TW201922876A (zh
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南昌樹
松本隆之
古俣步
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日商Jxtg能源股份有限公司
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Abstract

本發明之預浸體包含:碳纖維;及含有具有聯苯結構之環氧樹脂、硬化劑及氰尿酸三聚氰胺之樹脂組合物。

Description

預浸體、纖維強化複合材料及成形體
本發明係關於一種預浸體、纖維強化複合材料及成形體。
包含碳纖維與基質樹脂之纖維強化複合材料為輕量且具有優異之強度,故而可用於各種用途中。
有對此種纖維強化複合材料要求阻燃性之情形,自先前,已知有調配鹵素系阻燃劑或磷系阻燃劑,而使纖維強化複合材料阻燃化之方法。例如,於專利文獻1中,記載有於用以形成基質樹脂之環氧樹脂組合物中調配磷化合物,而獲得具有優異之阻燃性之纖維強化複合材料之方法。 [先前技術文獻] [專利文獻]
[專利文獻1]國際公開第2005/082982號
[發明所欲解決之問題]
然而,於使用鹵素系阻燃劑及磷系阻燃劑之情形時,有燃燒時產生有毒氣體、廢棄時之環境負荷之課題。
又,近年來,研究於電氣、電子機器之殼體中使用纖維強化複合材料,就殼體之厚度變薄、機器之重量減輕之觀點而言,要求厚度較薄之纖維強化複合材料。並且,於先前之方法中,難以提供即便厚度較薄亦可確保充分之阻燃性且不含鹵素及磷之纖維強化複合材料。
因此,本發明之目的在於提供一種即便不使用鹵素系阻燃劑及磷系阻燃劑,亦可形成兼具薄度與阻燃性之纖維強化複合材料之預浸體。本發明之目的亦在於提供一種使用上述預浸體所形成之纖維強化複合材料及包含其之成形體。 [解決問題之技術手段]
本發明之一態樣係關於一種包含碳纖維、及含有具有聯苯結構之環氧樹脂、硬化劑及氰尿酸三聚氰胺之樹脂組合物之預浸體。根據上述預浸體,可於不使用鹵素系阻燃劑及磷系阻燃劑之情況下,形成兼具薄度與阻燃性之纖維強化複合材料。
於一態樣中,上述氰尿酸三聚氰胺之含量亦可為以樹脂組合物之總量基準計為20~40質量%。
於一態樣中,上述樹脂組合物中之氯原子之含量可為1質量%以下。
於一態樣中,上述樹脂組合物中之磷原子之含量可為0.1質量%以下。
本發明之另一態樣係關於一種纖維強化複合材料,其係將複數個預浸體進行積層及硬化而成者,且上述預浸體之至少一個為上述之預浸體。
一態樣之纖維強化複合材料之積層方向之厚度可為1.5 mm以下。
一態樣之纖維強化複合材料之藉由UL94燃燒試驗之阻燃性評價可為V-0或V-1。
本發明之進而另一態樣係關於一種包含上述纖維強化複合材料之成形體。 [發明之效果]
根據本發明,提供一種即便不使用鹵素系阻燃劑及磷系阻燃劑,亦可形成兼具薄度與阻燃性之纖維強化複合材料之預浸體。又,根據本發明,提供一種使用上述預浸體所形成之纖維強化複合材料及包含其之成形體。
以下,對本發明之較佳實施形態進行說明。
(預浸體) 本實施形態之預浸體包含:碳纖維、及含有具有聯苯結構之環氧樹脂、硬化劑及氰尿酸三聚氰胺之樹脂組合物。根據上述預浸體,可於不使用鹵素系阻燃劑及磷系阻燃劑之情況下,形成兼具薄度與阻燃性之纖維強化複合材料。
碳纖維並無特別限定,可無特別限制地使用可用於纖維強化複合材料之碳纖維。作為碳纖維,根據原料之不同,存在聚丙烯腈(PAN)系碳纖維及瀝青系碳纖維。瀝青系碳纖維具有拉伸彈性較高之特性,另一方面,PAN系碳纖維具有拉伸強度較高之特性。本實施形態之碳纖維可為PAN系碳纖維,亦可為瀝青系碳纖維,就可獲得耐變形性更優異之碳纖維強化複合材料之觀點而言,更佳為瀝青系碳纖維。
本實施形態之預浸體較佳為包含拉伸彈性模數為150 GPa以上之碳纖維。又,碳纖維之拉伸彈性模數更佳為200 GPa以上,進而較佳為450 GPa以上,進一步較佳為600 GPa以上。於使用複數種預浸體之情形時,較佳為預浸體中所含之碳纖維之大部分(例如為70質量%以上,較佳為80質量%以上)具有上述較佳之拉伸彈性模數。再者,本說明書中,碳纖維之拉伸彈性模數意指依據JIS R7601(1986)所測定之線料拉伸彈性模數。
於本實施形態之預浸體中,每單位面積之碳纖維量例如亦可為30 g/m2 以上,較佳為50 g/m2 以上,更佳為70 g/m2 以上。藉由設為上述碳纖維量,可於將纖維強化複合材料成形時,減少積層片數以獲得特定之厚度,可使作業簡便。又,每單位面積之碳纖維量例如可為3000 g/m2 以下,較佳為2000 g/m2 以下,更佳為1000 g/m2 以下。藉此,可抑制孔隙之產生,容易獲得均勻之纖維強化複合材料。
關於預浸體中之碳纖維之含量,以預浸體之總量基準計,例如可為20質量%以上,較佳為30質量%以上,更佳為40質量%以上。藉此,纖維強化複合材料之強度進一步提高。又,關於預浸體中之碳纖維之含量,以預浸體之總量基準計,例如可為90質量%以下,較佳為85質量%以下,更佳為80質量%以下。藉此,可抑制孔隙之產生,容易獲得均勻之纖維強化複合材料。
樹脂組合物含有具有聯苯結構之環氧樹脂、硬化劑、及氰尿酸三聚氰胺。藉由樹脂組合物之硬化,而形成纖維強化複合材料中之基質樹脂。
具有聯苯結構之環氧樹脂(以下,視情形稱為「環氧樹脂(A)」)係具有聯苯結構與兩個以上之環氧基之化合物。
聯苯結構表示兩個苯環以單鍵進行共價鍵結而成之結構。環氧樹脂(A)中之聯苯結構亦可於苯環上具有取代基。作為該取代基,例如可列舉:烷基、芳基、芳烷基、羥基、烷氧基等。
環氧樹脂(A)之環氧當量並無特別限定,例如亦可為150以上,較佳為200以上,更佳為250以上。又,環氧樹脂(A)之環氧當量例如亦可為1000以下,較佳為700以下,更佳為400以下。
作為環氧樹脂(A),例如可列舉:下述式(A-1)所表示之環氧樹脂。
[化1]
Figure 02_image001
式中,n表示1以上之整數,較佳為1~30,更佳為1~10。
作為環氧樹脂(A),亦可使用市售品,例如可較佳地使用NC-3000、NC-3000H、NC-3100(以上,日本化藥製造,商品名)等。
關於樹脂組合物中之環氧樹脂(A)之含量,以樹脂組合物之總量基準計,例如可為15質量%以上,較佳為20質量%以上,更佳為25質量%以上。藉此,纖維強化複合材料之耐熱性或韌性進一步提高。又,關於環氧樹脂(A)之含量,以樹脂組合物之總量基準計,例如可為45質量%以下,較佳為40質量%以下,更佳為35質量%以下。藉此,可將樹脂組合物保持為適當之黏度,可使作業簡便。
樹脂組合物可進而含有環氧樹脂(A)以外之其他環氧樹脂(以下,視情形稱為「環氧樹脂(B)」)。環氧樹脂(B)可稱為具有兩個以上之環氧基且不具有聯苯結構之化合物。
作為環氧樹脂(B),只要為可與環氧樹脂(A)一同硬化之環氧樹脂,則並無特別限定。環氧樹脂(B)可為了調整樹脂組合物之黏度,提高組成成分之硬化性等而調配。
作為環氧樹脂(B),例如可列舉:雙酚A型環氧樹脂、雙酚F型環氧樹脂、雙酚S型環氧樹脂、苯酚酚醛清漆型環氧樹脂、甲酚酚醛清漆型環氧樹脂、間苯二酚型環氧樹脂、具有萘骨架之環氧樹脂等。
環氧樹脂(A)之含量相對於環氧樹脂(A)及環氧樹脂(B)之合計量例如可為20質量%以上,較佳為25質量%以上,更佳為30質量%以上。藉此,纖維強化複合材料之耐熱性進一步提高。
環氧樹脂(A)之含量相對於環氧樹脂(A)及環氧樹脂(B)之合計量之上限並無特別限定,例如可為40質量%以下,亦可為35質量%以下。
關於環氧樹脂(A)及環氧樹脂(B)之合計量,以樹脂組合物之總量基準計,例如可為50質量%以上,較佳為55質量%以上,更佳為60質量%以上。藉此,容易獲得作為纖維強化複合材料更佳之機械物性。又,關於環氧樹脂(A)及環氧樹脂(B)之合計量,以樹脂組合物之總量基準計,例如可為80質量%以下,較佳為75質量%以下,更佳為70質量%以下。因此,藉由充分添加其他樹脂、硬化劑、硬化促進劑等添加物作為樹脂組合物之構成材料,可實現各種物性之提高。
硬化劑只要為可使環氧樹脂(A)(視情形,為環氧樹脂(A)及環氧樹脂(B))硬化之硬化劑即可。作為硬化劑,例如可列舉:胺系硬化劑、酸酐系硬化劑、酚系硬化劑等,該等之中,較佳為胺系硬化劑,其中,更佳為二氰二胺及二胺基二苯基碸。
硬化劑之含量並無特別限定,以樹脂組合物之總量基準計,例如可為0.1質量%以上,較佳為0.5質量%以上,更佳為1質量%以上。又,硬化劑之含量係以樹脂組合物之總量基準,例如可為10質量%以下,較佳為8質量%以下,更佳為6質量%以下。
關於氰尿酸三聚氰胺之含量,以樹脂組合物之總量基準計,例如可為15質量%以上,較佳為20質量%以上,更佳為25質量%以上。藉此,纖維強化複合材料之耐熱性進一步提高。又,關於氰尿酸三聚氰胺之含量,以樹脂組合物之總量基準計,例如可為50質量%以下,較佳為45質量%以下,更佳為40質量%以下。藉此,可將樹脂組合物保持為適當之黏度,作業性提高。
氰尿酸三聚氰胺之含量C2 相對於環氧樹脂(A)之含量C1 之比(C2 /C1 )(質量比)例如可為0.5以上,較佳為1.0以上。又,上述比(C2 /C1 )例如可為3.0以下,較佳為2.0以下。若為此種比(C2 /C1 ),則有纖維強化複合材料之厚度較薄之情形之阻燃性進一步提高之傾向。
關於環氧樹脂(A)之含量C1 與氰尿酸三聚氰胺之含量C2 之合計量(C1 +C2 ),以樹脂組合物之總量基準計,例如可為30質量%以上,較佳為35質量%以上,更佳為40質量%以上。又,關於上述合計量(C1 +C2 ),以樹脂組合物之總量基準計,例如可為80質量%以下,較佳為75質量%以下,更佳為70質量%以下。若為此種合計量(C1 +C2 ),則有纖維強化複合材料之厚度較薄之情形之阻燃性進一步提高之傾向。
樹脂組合物亦可進而含有硬化促進劑。作為與二氰二胺組合而使用之硬化促進劑,例如可列舉:3-苯基-1,1-二甲基脲、3-(4-氯苯基)-1,1-二甲基脲、3-(3,4-二氯苯基)-1,1-二甲基脲(DCMU)等,該等之中,較佳為3-(3,4-二氯苯基)-1,1-二甲基脲(DCMU)。
硬化促進劑之含量並無特別限定,以樹脂組合物之總量基準計,例如可為0.1質量%以上,較佳為0.5質量%以上,更佳為1質量%以上。又,關於硬化促進劑之含量,以樹脂組合物之總量基準計,例如可為10質量%以下,較佳為8質量%以下,更佳為6質量%以下。
樹脂組合物亦可進而含有上述以外之其他成分。作為其他成分,例如可列舉:無機微粒子、有機微粒子等。關於此種其他成分之含量,分別以樹脂組合物之總量基準計,例如可為50質量%以下,較佳為40質量%以下,更佳為30質量%以下。又,上述其他成分之含量例如可為0質量%以上,亦可為10質量%以上。
樹脂組合物之50℃下之黏度較佳為10 Pa・s以上,更佳為50 Pa・s以上。藉此,可充分抑制樹脂組合物之滴液等,有預浸體之製造變得更容易之傾向。又,樹脂組合物於50℃下之黏度較佳為20000 Pa・s以下,更佳為10000 Pa・s以下。藉此,樹脂組合物之黏著及覆模性變得更佳。
樹脂組合物中之氯原子之含量例如可為1質量%以下,較佳為0.5質量%以下,更佳為0.1質量%以下,亦可為檢測極限以下。根據上述樹脂組合物,可藉由上述之構成而一面確保充分之阻燃性,一面抑制燃燒時之含氯氣體之產生。
樹脂組合物中之磷原子之含量例如可為0.1質量%以下,較佳為0.01%質量以下,更佳為0.001質量%以下,亦可為檢測極限以下。磷系化合物與樹脂之相溶性較低情形較多,有難以製作均質之預浸體之情形。針對該問題,於本實施形態中,藉由上述之構成,可一面確保充分之阻燃性,一面容易地獲得均質之預浸體。又,亦可藉由減少磷原子之含量,而充分確保環境安全性。
樹脂組合物之硬化後之玻璃轉移溫度(Tg)較佳為120℃以上,更佳為150℃以上。根據上述樹脂組合物,可獲得耐熱性更優異之纖維強化複合材料。
本實施形態之預浸體之製造方法並無特別限定。例如,預浸體可藉由準備將碳纖維於一方向並紗而成之碳纖維束,並於該碳纖維束中含浸樹脂組合物而製造。作為含浸樹脂組合物之方法,例如可列舉:使樹脂組合物溶解於溶劑中進行低黏度化並含浸之濕式法;直接含浸藉由加熱而低黏度化之樹脂組合物之熱熔法(乾式法)等。
可藉由積層本實施形態之預浸體並硬化而獲得纖維強化複合材料。以如此之方式所獲得之纖維強化複合材料可兼具薄度與阻燃性。
(纖維強化複合材料) 本實施形態之纖維強化複合材料係將複數個預浸體進行積層及硬化而成者,複數個預浸體中之至少一個係上述實施形態之預浸體。於本實施形態中,複數個預浸體中,可使半數以上為上述實施形態之預浸體,亦可使全部為上述實施形態之預浸體。關於經積層及硬化之複數個預浸體之各者之構成可為相同者,亦可為不同者。
纖維強化複合材料之形狀並無特別限定,例如可為板狀。
纖維強化複合材料之厚度(積層方向之厚度)並無特別限定,就兼具薄度與阻燃性之觀點而言,較佳為1.5 mm以下,更佳為1.0 mm以下。又,纖維強化複合材料之厚度之下限並無特別限定,例如可為0.2 mm以上,亦可為0.4 mm以上。
預浸體之積層片數並無特別限定,例如可為2~16片,較佳為4~8片。
纖維強化複合材料之藉由UL94燃燒試驗之阻燃性評價較佳為V-0或V-1,更佳為V-0。此種纖維強化複合材料可稱為阻燃性尤其優異。
纖維強化複合材料之製造方法並無特別限定。例如,可藉由積層複數各預浸體,並進行熱硬化而製造。熱硬化之條件並無特別限定,只要為使預浸體之樹脂組合物硬化之條件即可。於該製造方法中,例如亦可於熱硬化時將預浸體之積層體變化為特定之形狀,而獲得成形為特定之形狀之纖維強化複合材料。
熱硬化時之加熱溫度例如可為100~150℃,亦可為110~140℃。又,熱硬化時之加熱時間例如可為10分鐘~3小時,亦可為20分鐘~2小時。
亦可於熱硬化時賦予壓力,加壓條件例如可為0.1~0.9 MPa。
本實施形態之纖維強化複合材料例如可較佳地用於電子、電氣機器之殼體等要求薄度及阻燃性之兩種特性之用途。又,本實施形態之纖維強化複合材料亦可較佳地用於飛機或汽車等之構造材料、高爾夫桿身或釣竿等運動用品、土木材料等用途。
以上,已對本發明之較佳之實施形態進行說明,但本發明並不限定於上述實施形態。 [實施例]
以下,利用實施例更具體地說明本發明,但本發明並不限定於實施例。
(實施例A-1) 將具有聯苯結構之環氧樹脂(NC-3000,日本化藥公司製造)40質量份、雙酚A型環氧樹脂(YD-128,新日鐵住金化學公司製造)14質量份、苯酚酚醛清漆型環氧樹脂(YDPN-638,新日鐵住金化學公司製造)20質量份、氰尿酸三聚氰胺(MC-6000,日產化學公司製造)40質量份、二氰二胺(DICY)4質量份及3-(3,4-二氯苯基)-1,1-二甲基脲(DCMU)3質量份進行混合,而獲得樹脂組合物A-1。所獲得之樹脂組合物A-1於30℃下之黏度為60100 Pa・s。又,於140℃下硬化2小時後之樹脂硬化物之玻璃轉移溫度為155℃,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
繼而,準備XN-80(日本Graphite Fiber公司製造,拉伸彈性模數為780 GPa)作為碳纖維,並於該碳纖維中含浸樹脂組合物A-1。藉此,獲得每單位面積之碳纖維之量為125 g/m2 、樹脂含有率為32%之預浸體(預浸體A-1)。
(實施例A-2) 將具有聯苯結構之環氧樹脂、雙酚A型環氧樹脂及苯酚酚醛清漆型環氧樹脂之調配量分別變更為35質量份、19質量份及13質量份,除此以外,以與實施例A-1相同之方式獲得樹脂組合物A-2。所獲得之樹脂組合物A-2於30℃下之黏度為22100 Pa・s。又,於140℃下硬化2小時後之樹脂組合物之玻璃轉移溫度為151℃,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
其次,使用樹脂組合物A-2,代替樹脂組合物A-1,除此以外,以與實施例A-1相同之方式進行預浸體之製作,獲得每單位面積之碳纖維之量為125 g/m2 、樹脂含有率為32%之預浸體(預浸體A-2)。
(實施例A-3) 將具有聯苯結構之環氧樹脂、雙酚A型環氧樹脂及苯酚酚醛清漆型環氧樹脂之調配量分別變更為30質量份、14質量份及23質量份,進而混合苯氧基樹脂(YP-70,新日鐵住金化學公司製造)5質量份,除此以外,以與實施例A-1相同之方式獲得樹脂組合物A-3。所獲得之樹脂組合物A-3於30℃下之黏度為113000 Pa・s。又,於140℃下硬化2小時後之玻璃轉移溫度為153℃,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
繼而,使用樹脂組合物A-3,代替樹脂組合物A-1,除此以外,以與實施例A-1相同之方式進行預浸體之製作,獲得每單位面積之碳纖維之量為125 g/m2 、樹脂含有率為32%之預浸體(預浸體A-3)。
(實施例A-4) 將具有聯苯結構之環氧樹脂、雙酚A型環氧樹脂及苯酚酚醛清漆型環氧樹脂之調配量分別變更為30質量份、32質量份及0質量份,進而混合苯氧基樹脂(YP-70,新日鐵住金化學公司製造)10質量份,除此以外,以與實施例A-1相同之方式獲得樹脂組合物A-4。所獲得之樹脂組合物A-4於30℃下之黏度為35000 Pa・s。又,於140℃下硬化2小時後之樹脂組合物之玻璃轉移溫度為128℃,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
繼而,使用樹脂組合物A-4,代替樹脂組合物A-1,除此以外,以與實施例A-1相同之方式進行預浸體之製作,獲得每單位面積之碳纖維之量為125 g/m2 、樹脂含有率為32%之預浸體(預浸體A-4)。
(實施例A-5) 使用T700S(Toray公司製造,拉伸彈性模數230 GPa)作為碳纖維,除此以外,以與實施例A-2相同之方式進行預浸體之製作,獲得每單位面積之碳纖維之量為200 g/m2 、樹脂含有率為32%之預浸體(預浸體A-5)。
(比較例X-1) 將雙酚A型環氧樹脂(YD-128,新日鐵住金化學公司製造)37質量份、雙酚A型環氧樹脂(YD-11,新日鐵住金化學公司製造)33質量份、苯酚酚醛清漆型環氧樹脂(YDPN-638,新日鐵住金化學公司製造)30質量份、苯氧基樹脂(YP-70,新日鐵住金化學公司製造)15質量份、二氰二胺(DICY)4質量份及3-(3,4-二氯苯基)-1,1-二甲基脲(DCMU)3質量份進行混合,獲得樹脂組合物X-1。所獲得之樹脂組合物X-1於30℃下之黏度為24100 Pa・s。又,於140℃下硬化2小時後之樹脂硬化物之玻璃轉移溫度為131℃,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-not。
繼而,準備作為碳纖維之XN-80(日本Graphite Fiber公司製造,拉伸彈性模數為780 GPa),於該碳纖維中含浸樹脂組合物X-1。藉此,獲得每單位面積之碳纖維之量為125 g/m2 、樹脂含有率為32%之預浸體(預浸體X-1)。
(比較例X-2) 將YD-11之調配量變更為13質量份,進而混合氰尿酸三聚氰胺(MC-6000,日產化學公司製造)20質量份,除此以外,以與比較例X-1相同之方式獲得樹脂組合物X-2。所獲得之樹脂組合物X-2於30℃下之黏度為10600 Pa・s。又,於140℃下硬化2小時後之樹脂硬化物之玻璃轉移溫度為128℃,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-2。
(比較例X-3) 將YP-70及MC-6000之調配量分別變更為5質量份及0質量份,進而混合具有聯苯結構之環氧樹脂(NC-3000,日本化藥公司製造)30質量份,除此以外,以與比較例X-2相同之方式獲得樹脂組合物X-3。所獲得之樹脂組合物X-3於30℃下之黏度為16600 Pa・s。又,於140℃下硬化2小時後之樹脂硬化物之玻璃轉移溫度為134℃,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-not。
(實施例B-1) 積層4片預浸體A-1,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度0.57 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
(實施例B-2) 積層4片預浸體A-2,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度0.43 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
(實施例B-3) 積層4片預浸體A-3,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度0.57 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
(實施例B-4) 積層4片預浸體A-4,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度0.57 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-1。
(實施例B-5) 積層4片預浸體A-5,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度0.85 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
(實施例B-6) 積層10片預浸體A-2,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度1.1 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
(實施例B-7) 積層3片預浸體A-5,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度0.67 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-1。
(實施例B-8) 按照A-2/A-2/A-5/A-2/A-2之順序將預浸體A-2及預浸體A-5積層5片,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度0.65 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-0。
(比較例Y-1) 積層16片預浸體X-1,於高壓釜中以壓力0.6 MPa、140℃×2小時之條件進行硬化,獲得厚度2.4 mm之纖維強化複合材料板。針對所獲得之纖維強化複合材料板,進行與UL94燃燒試驗相同之阻燃性評價,結果相當於V-not。 [產業上之可利用性]
本發明之預浸體即便不使用鹵素系阻燃劑及磷系阻燃劑,亦可形成兼具薄度與阻燃性之纖維強化複合材料。因此,本發明之預浸體可較佳地用於電氣、電子機器之殼體等用途中。

Claims (8)

  1. 一種預浸體,其包含:碳纖維,及樹脂組合物,含有具有聯苯結構與兩個以上環氧基之環氧樹脂(A)、具有兩個以上環氧基且不具有聯苯結構之環氧樹脂(B)、硬化劑及氰尿酸三聚氰胺;且上述環氧樹脂(A)之含量相對於上述環氧樹脂(A)及上述環氧樹脂(B)之合計量為20質量%以上且40質量%以下。
  2. 如請求項1之預浸體,其中上述氰尿酸三聚氰胺之含量為以樹脂組合物之總量基準計為20~40質量%。
  3. 如請求項1或2之預浸體,其中上述樹脂組合物中之氯原子之含量為1質量%以下。
  4. 如請求項1或2之預浸體,其中上述樹脂組合物中之磷原子之含量為0.1質量%以下。
  5. 一種纖維強化複合材料,其係將複數個預浸體進行積層及硬化而成者,且上述預浸體之至少一個為如請求項1至4中任一項之預浸體。
  6. 如請求項5之纖維強化複合材料,其積層方向之厚度為1.5mm以下。
  7. 如請求項5之纖維強化複合材料,其係藉由UL94燃燒試驗之阻燃性評價為V-0或V-1。
  8. 一種成形體,其包含如請求項5至7中任一項之纖維強化複合材料。
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