CN113116192B - 一种碳纤维砧板及其制备方法 - Google Patents
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Abstract
本发明公开了一种碳纤维砧板及其制备方法,碳纤维砧板由若干层碳纤维布通过环氧树脂胶粘剂复合而成,表层的碳纤维布经过自清洁和抗菌改性。其制备方法为:(1)将未经改性的碳纤维布浸入液态环氧树脂胶粘剂中,浸吸环氧树脂胶粘剂后取出进行加热固化,得到碳纤维浸渍布;(2)将碳纤维浸渍布层叠成中间层,然后将经过自清洁和抗菌改性的碳纤维布置于中间层两侧,热压成型后切割得到所述碳纤维砧板。本发明用环氧树脂胶粘剂将多层碳纤维布复合,并对表面的碳纤维布进行自清洁和抗菌改性,制成的砧板强度大、模量高、质地轻而硬,使用时不易变形、受潮和开裂,且具有良好的自清洁和抗菌功能,有利于人体健康。
Description
技术领域
本发明涉及厨具领域,尤其是涉及一种碳纤维砧板及其制备方法。
背景技术
砧板是一种不可或缺的生活用品,目前市面上的砧板大多是用木材或塑料制成的,例如,公开号CN106983407A的专利文件中公开的“一种砧板、包含砧板的砧板套装及砧板加工工艺”,通过将桦木板材进行特定流程的高温蒸汽干燥、两端截距四面抛光、定厚以及扣手工艺,得到所述砧板。公开号CN104231427A的专利文件中公开的“一种塑料砧板及其制备方法”该塑料砧板由以下重量份数的成分组成:聚丙烯:40-60份,玻璃纤维:5-8份,纳米无机粉体:5-8份,偶联剂:1-3份,相容剂:1-3份,增韧剂:3-5份,纳米银:3-5份,阻燃剂:8-15份,抗氧剂:0.5-1份。
现有的砧板中,木质砧板密度高、韧性强、使用起来较为牢固,但木质砧板易开裂,表面容易产生刀痕;不易清洁,很容易藏污纳垢,表面易滋生细菌,污染食物;且木质砧板的广泛使用需要砍伐大量树木,对生态环境造成破坏。而塑料砧板虽然重量较轻,携带方便,但塑料菜板不耐高温,如果热温的食物放在上面切,很易导致变形;并且塑料砧板多以聚丙烯、聚乙烯等化学物质制成,不适宜切油脂大的食物,否则不好清洗;质地粗糙的塑料砧板还易切出碎末,随食物进入体内,对人体肝、肾造成损伤。
发明内容
本发明是为了克服现有技术中的木质砧板易开裂、表面易滋生细菌,而塑料砧板易变形,且切落的塑料碎末随食物进入体内会对人体造成危害的问题,提供一种碳纤维砧板及其制备方法,用环氧树脂胶粘剂将多层碳纤维布复合,并对表面的碳纤维布进行自清洁和抗菌改性,制成的砧板强度大、模量高、质地轻而硬,使用时不易变形、受潮和开裂,且具有良好的自清洁和抗菌功能,有利于人体健康。
为了实现上述目的,本发明采用以下技术方案:
一种碳纤维砧板,由若干层碳纤维布通过环氧树脂胶粘剂复合而成,表层的碳纤维布经过自清洁和抗菌改性。
本发明将碳纤维布复合制成砧板,碳纤维布强度大、模量高,质地轻而硬,制得的砧板使用时不易变形、受潮和开裂,且携带和移动方便,有效解决了现有的木质和塑料砧板易开裂和易变形的问题。同时,本发明对表层的碳纤维布进行自清洁和抗菌改性,使砧板表面具有自清洁和抗菌功能,避免食物残渣和油污等污染物在砧板表面的残留,防止微生物的滋生,有利于人体健康。
作为优选,所述自清洁和抗菌改性方法为:
A)碳纤维布预处理:将碳纤维布清洗去除表面杂质后用硝酸溶液进行酸化处理;
B)生长金属有机骨架:将硝酸钛和2,5-二甲基对苯二甲酸溶于溶剂中得到混合溶液;将预处理后的碳纤维布浸渍于混合溶液中,超声振荡5~10min后向混合溶液中加入邻氟苯甲酸,继续超声振荡5~10min;向体系中加入盐酸,超声振荡5~10min后100~120℃下恒温反应18~24h,将碳纤维布取出后清洗得到表面负载金属有机骨架的碳纤维布;
C)包埋二氧化钛:将水和无水乙醇混合,用硝酸调节pH为2~3,得到滴加液;将冰醋酸加入无水乙醇中,搅拌状态下加入钛酸丁酯,搅拌均匀得到钛酸丁酯溶液;将表面负载金属有机骨架的碳纤维布浸渍于钛酸丁酯溶液中,超声振荡下将滴加液滴加至钛酸丁酯溶液中,停止超声,陈化12~24h;
D)煅烧:将碳纤维布取出后,在惰性气氛下500~600℃煅烧得到所述经过自清洁和抗菌改性的碳纤维布。
本发明对表层的碳纤维布进行改性时,先通过步骤A)对碳纤维布进行预处理,去除碳纤维表面油脂等杂质后用硝酸溶液对碳纤维布进行酸化处理,在碳纤维布表面引入羧基。然后通过步骤B),利用水热反应,以硝酸钛为金属源、2,5-二甲基对苯二甲酸为有机配体、邻氟苯甲酸为模板剂,在碳纤维布表面原位生长一层具有多面体笼状结构的金属有机骨架,由于预处理后的碳纤维布表面具有带负电的羧基,可以与金属有机骨架中带正点的中心离子吸附进而整体形核,因此金属有机骨架可以牢固负载在碳纤维布表面。再通过步骤C),将表面负载了金属有机骨架的碳纤维布浸渍在钛酸丁酯溶液中,利用钛酸丁酯的水解反应在金属有机骨架内包埋二氧化钛,由于在水解前有大量钛酸丁酯负载于金属有机骨架中,因此水解后二氧化钛溶胶可以原位生成于金属有机骨架的多面体笼状结构内,形成金属有机骨架包埋二氧化钛凝胶的结构。最后通过步骤D)进行高温煅烧,在碳纤维布表面得到内部包埋有纳米二氧化钛的中空多面体碳骨架结构层。
外部的中空多面体碳骨架结构可以在碳纤维布表面形成粗糙的微纳结构,从而使碳纤维布表面具有超疏水和疏油特性,大幅度提高污染物在碳纤维布表面的滚动能力,进而使砧板表面的污染物在外力作用下极易滚动脱落,使砧板表面具有高效的自清洁性能,避免油污和食物残渣等污染物的残留。包埋在中空多面体碳骨架结构内的纳米二氧化钛具有广谱抗菌功能,能抑制和杀灭微生物,并有除臭、防霉、消毒的作用,使砧板表面同时具有良好的抗菌性能,避免微生物滋生对人体健康造成的危害。
作为优选,步骤A)中的预处理方法为:将碳纤维布分别在丙酮、乙醇、去离子水中超声20~30min,然后再置于硝酸溶液中,115~125℃下反应10~15h,取出后用去离子水清洗,得到预处理后的碳纤维布。
作为优选,步骤A)中所述的硝酸溶液的质量浓度为14~16%。
作为优选,步骤B)中添加的硝酸钛、2,5-二甲基对苯二甲酸和邻氟苯甲酸的摩尔比为1:2~3:2~3;添加的盐酸的质量为混合溶液总质量的1~3%。将金属源、有机配体和模板剂的加入量控制在此范围内,可以在碳纤维布上有效生长出多面体笼状结构的金属有机骨架。
作为优选,步骤C)中所述的滴加液中,水和无水乙醇的体积比为1:1.5~2.5;所述钛酸丁酯溶液中冰醋酸、无水乙醇和钛酸丁酯的体积比为0.5~0.6:2.5~3.5:1;添加的滴加液和钛酸丁酯溶液的体积比为1~2:1。
作为优选,步骤D)中煅烧时间2~4h。
本发明还提供了一种上述碳纤维砧板的制备方法,包括如下步骤:
(1)将未经改性的碳纤维布浸入液态环氧树脂胶粘剂中,浸吸环氧树脂胶粘剂后取出进行加热固化,得到碳纤维浸渍布;
(2)将碳纤维浸渍布层叠成中间层,然后将经过自清洁和抗菌改性的碳纤维布置于中间层两侧,热压成型后切割得到所述碳纤维砧板。
作为优选,步骤(1)中浸渍时间20~30min;固化温度80~100℃。
因此,本发明具有如下有益效果:
(1)将碳纤维布复合制成砧板,碳纤维布强度大、模量高,质地轻而硬,制得的砧板使用时不易变形、受潮和开裂,且携带和移动方便,有效解决了现有的木质和塑料砧板易开裂和易变形的问题;
(2)对表层的碳纤维布进行自清洁和抗菌改性,使砧板表面具有自清洁和抗菌功能,避免食物残渣和油污等污染物在砧板表面的残留,防止微生物的滋生,有利于人体健康;
(3)对表层的碳纤维布进行自清洁和抗菌改性时,在碳纤维布表面得到内部包埋有纳米二氧化钛的中空多面体碳骨架结构层,外部的中空多面体碳骨架结构可以在碳纤维布表面形成粗糙的微纳结构,从而使碳纤维布表面具有高效的自清洁性能;包埋在中空多面体碳骨架结构内的纳米二氧化钛具有广谱抗菌功能,能抑制和杀灭微生物,并有除臭、防霉、消毒的作用。
具体实施方式
下面结合具体实施方式对本发明做进一步的描述。
在本发明中,若非特指,所有原料均可从市场购得或是本行业常用的,下述实施例中的方法,如无特别说明,均为本领域常规方法。
实施例1:
一种碳纤维砧板,由五层碳纤维布通过环氧树脂胶粘剂复合而成,表面的两层碳纤维布经过自清洁和抗菌改性,其制备方法为:
(1)将三层未经改性的碳纤维布(天津耐特碳纤维制品有限公司)浸入液态环氧树脂胶粘剂(深圳市郎搏万先进材料有限公司)中浸渍25min,浸吸环氧树脂胶粘剂后取出,加热至90℃进行固化,得到碳纤维浸渍布;
(2)将三层碳纤维浸渍布层叠成中间层,然后将两层经过自清洁和抗菌改性的碳纤维布分别置于中间层两侧,经热压机热压成型后切割得到所述碳纤维砧板。
其中,自清洁和抗菌改性的碳纤维布的制备方法为:
A)碳纤维布预处理:将碳纤维布分别在丙酮、乙醇、去离子水中超声25min,然后再置于质量浓度为15%的硝酸溶液中,120℃下反应12h,取出后用去离子水清洗,得到预处理后的碳纤维布;
B)生长金属有机骨架:将硝酸钛和2,5-二甲基对苯二甲酸溶于N,N-二甲基甲酰胺中得到混合溶液;将预处理后的碳纤维布浸渍于混合溶液中,超声振荡8min后向混合溶液中加入邻氟苯甲酸,添加的硝酸钛、2,5-二甲基对苯二甲酸和邻氟苯甲酸的摩尔比为1:2.5:2.5;继续超声振荡8min;向体系中加入混合溶液总质量的2%的盐酸,超声振荡8min后110℃下恒温反应20h,将碳纤维布取出后清洗得到表面负载金属有机骨架的碳纤维布;
C)包埋二氧化钛:将体积比为1:2的去离子水和无水乙醇混合,用硝酸调节pH为2.5,得到滴加液;将冰醋酸加入无水乙醇中,搅拌状态下加入钛酸丁酯,搅拌均匀得到钛酸丁酯溶液,冰醋酸、无水乙醇和钛酸丁酯的体积比为0.55:3:1;将表面负载金属有机骨架的碳纤维布浸渍于钛酸丁酯溶液中,超声振荡下将滴加液滴加至钛酸丁酯溶液中,添加的滴加液和钛酸丁酯溶液的体积比为1.5:1,停止超声,陈化18h;
D)煅烧:将碳纤维布取出后,在氮气气氛下550℃煅烧3h得到经过自清洁和抗菌改性的碳纤维布。
实施例2:
一种碳纤维砧板,由五层碳纤维布通过环氧树脂胶粘剂复合而成,表面的两层碳纤维布经过自清洁和抗菌改性,其制备方法为:
(1)将三层未经改性的碳纤维布浸入液态环氧树脂胶粘剂中浸渍20min,浸吸环氧树脂胶粘剂后取出,加热至100℃进行固化,得到碳纤维浸渍布;
(2)将三层碳纤维浸渍布层叠成中间层,然后将两层经过自清洁和抗菌改性的碳纤维布分别置于中间层两侧,经热压机热压成型后切割得到所述碳纤维砧板。
其中,自清洁和抗菌改性的碳纤维布的制备方法为:
A)碳纤维布预处理:将碳纤维布分别在丙酮、乙醇、去离子水中超声20min,然后再置于质量浓度为16%的硝酸溶液中,115℃下反应15h,取出后用去离子水清洗,得到预处理后的碳纤维布;
B)生长金属有机骨架:将硝酸钛和2,5-二甲基对苯二甲酸溶于N,N-二甲基甲酰胺中得到混合溶液;将预处理后的碳纤维布浸渍于混合溶液中,超声振荡5min后向混合溶液中加入邻氟苯甲酸,添加的硝酸钛、2,5-二甲基对苯二甲酸和邻氟苯甲酸的摩尔比为1:2:2;继续超声振荡5min;向体系中加入混合溶液总质量的1%的盐酸,超声振荡5min后100℃下恒温反应24h,将碳纤维布取出后清洗得到表面负载金属有机骨架的碳纤维布;
C)包埋二氧化钛:将体积比为1:1.5的去离子水和无水乙醇混合,用硝酸调节pH为2,得到滴加液;将冰醋酸加入无水乙醇中,搅拌状态下加入钛酸丁酯,搅拌均匀得到钛酸丁酯溶液,冰醋酸、无水乙醇和钛酸丁酯的体积比为0.5:2.5:1;将表面负载金属有机骨架的碳纤维布浸渍于钛酸丁酯溶液中,超声振荡下将滴加液滴加至钛酸丁酯溶液中,添加的滴加液和钛酸丁酯溶液的体积比为2:1,停止超声,陈化12h;
D)煅烧:将碳纤维布取出后,在氮气气氛下500℃煅烧4h得到经过自清洁和抗菌改性的碳纤维布。
实施例3:
一种碳纤维砧板,由五层碳纤维布通过环氧树脂胶粘剂复合而成,表面的两层碳纤维布经过自清洁和抗菌改性,其制备方法为:
(1)将三层未经改性的碳纤维布浸入液态环氧树脂胶粘剂中浸渍30min,浸吸环氧树脂胶粘剂后取出,加热至80℃进行固化,得到碳纤维浸渍布;
(2)将三层碳纤维浸渍布层叠成中间层,然后将两层经过自清洁和抗菌改性的碳纤维布分别置于中间层两侧,经热压机热压成型后切割得到所述碳纤维砧板。
其中,自清洁和抗菌改性的碳纤维布的制备方法为:
A)碳纤维布预处理:将碳纤维布分别在丙酮、乙醇、去离子水中超声30min,然后再置于质量浓度为14%的硝酸溶液中,125℃下反应10h,取出后用去离子水清洗,得到预处理后的碳纤维布;
B)生长金属有机骨架:将硝酸钛和2,5-二甲基对苯二甲酸溶于N,N-二甲基甲酰胺中得到混合溶液;将预处理后的碳纤维布浸渍于混合溶液中,超声振荡10min后向混合溶液中加入邻氟苯甲酸,添加的硝酸钛、2,5-二甲基对苯二甲酸和邻氟苯甲酸的摩尔比为1:3:3;继续超声振荡10min;向体系中加入混合溶液总质量的3%的盐酸,超声振荡10min后120℃下恒温反应18h,将碳纤维布取出后清洗得到表面负载金属有机骨架的碳纤维布;
C)包埋二氧化钛:将体积比为1:2.5的去离子水和无水乙醇混合,用硝酸调节pH为3,得到滴加液;将冰醋酸加入无水乙醇中,搅拌状态下加入钛酸丁酯,搅拌均匀得到钛酸丁酯溶液,冰醋酸、无水乙醇和钛酸丁酯的体积比为0.6:3.5:1;将表面负载金属有机骨架的碳纤维布浸渍于钛酸丁酯溶液中,超声振荡下将滴加液滴加至钛酸丁酯溶液中,添加的滴加液和钛酸丁酯溶液的体积比为1:1,停止超声,陈化24h;
D)煅烧:将碳纤维布取出后,在氮气气氛下600℃煅烧2h得到经过自清洁和抗菌改性的碳纤维布。
对比例1(表层不经自清洁和抗菌改性):
一种碳纤维砧板,由五层碳纤维布通过环氧树脂胶粘剂复合而成,其制备方法为:
(1)将三层未经改性的碳纤维布浸入液态环氧树脂胶粘剂中浸渍25min,浸吸环氧树脂胶粘剂后取出,加热至90℃进行固化,得到碳纤维浸渍布;
(2)将三层碳纤维浸渍布层叠成中间层,然后将两层未经改性的碳纤维布分别置于中间层两侧,经热压机热压成型后切割得到所述碳纤维砧板。
对比例2(不生长金属有机骨架):
对比例2中表层碳纤维布的改性方法为:
A)碳纤维布预处理:将碳纤维布分别在丙酮、乙醇、去离子水中超声25min,然后再置于质量浓度为15%的硝酸溶液中,120℃下反应12h,取出后用去离子水清洗,得到预处理后的碳纤维布;
B)负载二氧化钛:将体积比为1:2的去离子水和无水乙醇混合,用硝酸调节pH为2.5,得到滴加液;将冰醋酸加入无水乙醇中,搅拌状态下加入钛酸丁酯,搅拌均匀得到钛酸丁酯溶液,冰醋酸、无水乙醇和钛酸丁酯的体积比为0.55:3:1;将预处理后的碳纤维布浸渍于钛酸丁酯溶液中,超声振荡下将滴加液滴加至钛酸丁酯溶液中,添加的滴加液和钛酸丁酯溶液的体积比为1.5:1,停止超声,陈化18h;
C)煅烧:将碳纤维布取出后,在氮气气氛下550℃煅烧3h得到改性的碳纤维布。
其余均与实施例1中相同。
对比例3(不包埋纳米二氧化钛):
对比例3中表层碳纤维布的改性方法为:
A)碳纤维布预处理:将碳纤维布分别在丙酮、乙醇、去离子水中超声25min,然后再置于质量浓度为15%的硝酸溶液中,120℃下反应12h,取出后用去离子水清洗,得到预处理后的碳纤维布;
B)生长金属有机骨架:将硝酸钛和2,5-二甲基对苯二甲酸溶于N,N-二甲基甲酰胺中得到混合溶液;将预处理后的碳纤维布浸渍于混合溶液中,超声振荡8min后向混合溶液中加入邻氟苯甲酸,添加的硝酸钛、2,5-二甲基对苯二甲酸和邻氟苯甲酸的摩尔比为1:2.5:2.5;继续超声振荡8min;向体系中加入混合溶液总质量的2%的盐酸,超声振荡8min后110℃下恒温反应20h,将碳纤维布取出后清洗得到表面负载金属有机骨架的碳纤维布;
C)煅烧:将表面负载金属有机骨架的碳纤维布在氮气气氛下550℃煅烧3h得到改性的碳纤维布。
其余均与实施例1中相同。
对上述实施例和对比例中的碳纤维砧板的性能进行测试,结果如表1所示。
其中,抑菌率的测试方法为:分别将测试菌种接种到50mL锥形瓶中培养基中,培养24h,取1mL(108cell/mL)加入到100mL的磷酸盐缓冲液中,制得菌悬液;将碳纤维砧板切割成1cm*1cm的样品,加入到20mL菌悬液中,震荡5min,在37℃下保温1h,取出部分样品,稀释105倍后涂在玻璃载体上,用显微镜观察金黄色葡萄球菌和大肠杆菌的残余菌数,与初始菌数对比计算抑菌率。
表1:碳纤维砧板性能测试结果。
从表1中可以看出,实施例1~3中采用本发明中的方法制得的碳纤维砧板具有良好的冲击韧性和弯曲强度,机械性能好,使用时不易变形损坏;砧板表面与水和大豆油的接触角均可达到130°以上,具有良好的疏水、疏油性能,清洁方便,不易沾染油污、存留食物残渣;并且砧板表面具有良好的抗菌性能,对金黄色葡萄球菌和大肠杆菌的抑菌率可以达到99%以上,不易滋生细菌,有利于人体健康。
而对比例1中不对表层的碳纤维布进行本发明中的自清洁和抗菌改性,砧板表面与水和大豆油的接触角显著降低,疏水、疏油性能差,不具备自清洁功能;并且抑菌率也显著降低,抗菌性能差;说明本发明在表层的碳纤维布表面修饰内部包埋有纳米二氧化钛的中空多面体碳骨架结构层,可以有效提高砧板的自清洁和抗菌性能。对比例2中对表层的碳纤维布进行改性时,直接通过溶胶凝胶法在碳纤维布表面负载纳米二氧化钛,而不生长金属有机骨架,碳纤维布表面无法形成微纳结构,砧板的疏水、疏油性能与实施例1中相比显著降低;同时砧板表面的抗菌性能也有所降低,可能是由于直接通过溶胶凝胶法负载纳米二氧化钛时,纳米二氧化钛与碳纤维布表面的结合力差,容易脱落,导致砧板的抗菌性能下降。对比例3中仅在碳纤维布表面修饰中空多面体碳骨架结构,而不在骨架结构内包埋纳米二氧化钛,砧板表面的抗菌性能显著降低,且疏水、疏油性能也稍有降低,说明在中空多面体碳骨架结构及其内部包埋的纳米二氧化钛的共同作用下,可以有效提高碳纤维布表面的自清洁和抗菌性能。
Claims (8)
1.一种碳纤维砧板,其特征是,由若干层碳纤维布通过环氧树脂胶粘剂复合而成,表层的碳纤维布经过自清洁和抗菌改性;
所述自清洁和抗菌改性方法为:
A)碳纤维布预处理:将碳纤维布清洗去除表面杂质后用硝酸溶液进行酸化处理;
B)生长金属有机骨架:将硝酸钛和2,5-二甲基对苯二甲酸溶于溶剂中得到混合溶液;将预处理后的碳纤维布浸渍于混合溶液中,超声振荡5~10min后向混合溶液中加入邻氟苯甲酸,继续超声振荡5~10min;向体系中加入盐酸,超声振荡5~10min后100~120℃下恒温反应18~24h,将碳纤维布取出后清洗得到表面负载金属有机骨架的碳纤维布;
C)包埋二氧化钛:将水和无水乙醇混合,用硝酸调节pH为2~3,得到滴加液;将冰醋酸加入无水乙醇中,搅拌状态下加入钛酸丁酯,搅拌均匀得到钛酸丁酯溶液;将表面负载金属有机骨架的碳纤维布浸渍于钛酸丁酯溶液中,超声振荡下将滴加液滴加至钛酸丁酯溶液中,停止超声,陈化12~24h;
D)煅烧:将碳纤维布取出后,在惰性气氛下500~600℃煅烧得到所述经过自清洁和抗菌改性的碳纤维布。
2.根据权利要求1所述的一种碳纤维砧板,其特征是,步骤A)中的预处理方法为:将碳纤维布分别在丙酮、乙醇、去离子水中超声20~30min,然后再置于硝酸溶液中,115~125℃下反应10~15h,取出后用去离子水清洗,得到预处理后的碳纤维布。
3.根据权利要求1或2所述的一种碳纤维砧板,其特征是,步骤A)中所述的硝酸溶液的质量浓度为14~16%。
4.根据权利要求1所述的一种碳纤维砧板,其特征是,步骤B)中添加的硝酸钛、2,5-二甲基对苯二甲酸和邻氟苯甲酸的摩尔比为1:2~3:2~3;添加的盐酸的质量为混合溶液总质量的1~3%。
5.根据权利要求1所述的一种碳纤维砧板,其特征是,步骤C)中所述的滴加液中,水和无水乙醇的体积比为1:1.5~2.5;所述钛酸丁酯溶液中冰醋酸、无水乙醇和钛酸丁酯的体积比为0.5~0.6:2.5~3.5:1;添加的滴加液和钛酸丁酯溶液的体积比为1~2:1。
6.根据权利要求1所述的一种碳纤维砧板,其特征是,步骤D)中煅烧时间2~4h。
7.一种如权利要求1~6任一所述的碳纤维砧板的制备方法,其特征是,包括如下步骤:
(1)将未经改性的碳纤维布浸入液态环氧树脂胶粘剂中,浸吸环氧树脂胶粘剂后取出进行加热固化,得到碳纤维浸渍布;
(2)将碳纤维浸渍布层叠成中间层,然后将经过自清洁和抗菌改性的碳纤维布置于中间层两侧,热压成型后切割得到所述碳纤维砧板。
8.根据权利要求7所述的一种碳纤维砧板的制备方法,其特征是,步骤(1)中浸渍时间20~30min;固化温度80~100℃。
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