CN1656241A - 功能性纤维板 - Google Patents

功能性纤维板 Download PDF

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CN1656241A
CN1656241A CNA038123126A CN03812312A CN1656241A CN 1656241 A CN1656241 A CN 1656241A CN A038123126 A CNA038123126 A CN A038123126A CN 03812312 A CN03812312 A CN 03812312A CN 1656241 A CN1656241 A CN 1656241A
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oxide
vapor deposition
fiberboard
physical vapor
deposition film
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CN100465329C (zh
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铃木政幸
中岛英吾
铃木敏和
铃木隆启
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Sekisui Nano Coat Technology Co Ltd
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Suzutora Suzutora Corp K K
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Abstract

在涂有物理蒸镀膜的纤维板中,使蒸镀膜透明而使得纤维板上的颜色和图案变得可见,而且,赋予蒸镀膜电导性,并且提高了蒸镀的产率,此外,可以选择性的阻断红外和紫外辐射。在含有合成纤维的纤维板中,一面或者双面被涂覆含有金属氧化物的物理蒸镀膜,其中,上述金属氧化物含有普通氧化物作为混合物的主要成分和少量具有低于普通氧化物的化合价的氧化物作为次要成分,较低化合价氧化物的量占金属氧化物的总量为0.1-20重量%,所述物理蒸镀膜的厚度为5-500nm。

Description

功能性纤维板
技术领域
本发明涉及涂覆含钛氧化物和其他金属氧化物的物理气相沉积膜的功能性纤维板。
背景技术
众所周知,在含有例如编织物、针织品、无纺织物的合成纤维的纤维板表面上利用如真空气相沉积、离子束法、溅镀法等物理气相沉积的方法形成金属或者金属氧化物薄膜,可以赋予纤维板各种功能,例如,电导性、防热性、热保留性、防尘性、抗菌性、除臭性等。然而,当在纤维板表面涂覆例如不锈钢、钛、铬或者铜等的金属气相沉积膜时,纤维板上的颜色、图案等就会被气相沉积膜遮蔽并呈现金属色彩,从时尚的观点看存在缺乏多样性的问题。一方面,当形成含有例如钛氧化物等金属氧化物的气相沉积膜时,由于所述的氧化物包括含有负2价氧的普通氧化物,因此,有可能通过调整膜的厚度至该气相沉积膜成为透明,从而使得纤维板的颜色和图案等可以看见;另一方面,还存在与金属气相沉积膜相比电导性较差、防热性也较差、生产率降低的问题。
此外,气相沉积膜的结构是已知的,其具有包括TiO2、Ag和TiO2三层的多层结构,气相沉积膜选择性地阻断紫外线和红外线照射以增大可见光的透光率;然而,由于该气相沉积膜外壳在反复洗涤时容易剥落,因此,这样的结构是不实用的,而且,还存在使用过程中金属被氧化、变质的问题。
本发明涉及通过利用物理气相沉积膜涂覆纤维板而获得的功能性纤维板,通过改变该物理气相沉积膜的组成使气相沉积膜变得透明,从而可以看见纤维板上的颜色和图案,而且,本发明能够向气相沉积膜提供例如电导性、红外线照射阻断、紫外线照射阻断等功能,此外,还可以在气相沉积时提高产率。
发明内容
与本发明有关的纤维板是包含纤维板的一种功能性纤维板,该纤维板包括合成纤维,其一面或者双面被涂覆含有金属氧化物的物理气相沉积膜,上述金属氧化物的特征在于:含有普通氧化物作为主要成分的混合物,并含有少量具有低于普通氧化物化合价的氧化物。
本发明中使用的合成纤维包括用于通常的编织和针织的热塑性合成纤维,例如,聚酯纤维、尼龙纤维、聚丙烯腈纤维(acrylicfiber)和聚酰亚胺纤维等。特别是从低含水量、容易进行金属和金属氧化物的物理气相沉积以及优异的气相沉积膜耐用性的观点来看,其优选为聚酯纤维。该合成纤维可以是化学短纤维或长丝形式的;在无纺织物的制造中不经过修饰而使用化学短纤维或长丝;但是,  当作为用于编织物(woven goods)或者针织物(knitgoods)的结构纱而使用时,优选例如单丝纱和复丝纱等长丝纱。
在本发明中,利用例如真空气相沉积、离子束法、溅镀法等物理气相沉积的方法,优选溅镀法,在上述纤维板的一面或者两面上形成含有例如钛氧化物等金属氧化物的薄膜。上述金属氧化物包括含有负2价氧的普通氧化物作为主要物质、少量具有低于普通氧化物的化合价的氧化物作为次要成分,并且其中混有下文所述的较低价氧化物。例如,在钛的氧化物中,四价氧化物TiO2被认为是普通氧化物,二价氧化物TiO和三价氧化物Ti2O3被认为是较低价氧化物。所以,钛氧化物的气相沉积膜是通过上述普通化合价的氧化物(四价氧化物)和较低化合价的氧化物(二价或三价氧化物)的混合物而形成的。
在如溅镀等物理气相沉积中,当在含有微量氩气的密闭反应室中溅镀金属时,金属被供应至反应室中的少量氧气所氧化,并被吸在纤维板上,但是,当所供应的氧气的数量达到生产普通氧化物所需的足够的数量时,只生成普通氧化物,同时,目标金属的表面被氧化,从而大幅减少蒸发的金属的数量,产率降低。
相反,当所供应的氧气量低于普通氧化物生产所需的数量时,上述较低价氧化物与普通氧化物同时生成,这些较低价氧化物以混合物的形式吸附在纤维板上,此外,由于目标表面没有被氧化,蒸发的金属量没有降低,从而防止产率的降低。所以,通过形成含有上述混合物的气相沉积膜、调整气相沉积膜的厚度可以向气相沉积膜提供电导性、防热性以及其他功能并保持透明性。而且,在上述溅镀的情况下,通过向氩气和氧气中混合微量的氮气,可以将产率提高至更好的水平。
为了将供应的氧气量调整至低于生产普通氧化物所需的量,最好在蒸发的金属通过溅镀产生等离子体的时候,测定由蒸发金属发出的光特有的亮度,例如,测定发光度,并调节供应的氧气量使发光度维持在稳定的水平。例如,在金属为钛的情况时,当钛经过溅镀汽化生成等离子体时发出波长为453nm的可见光,在缺乏氧气的情况下,汽化速度达到最大,亮度最强;当供应过量的氧气时,汽化速度达到最小,亮度也降低。因此,根据发光度调节氧气的供应量可以控制较低价氧化物的数量。而且,还可以利用任何理想的与发光度相关的强度指标来替代发光度本身。
氧化物的混合含量具有低于上述普通氧化物的化合价,换句话说,较低价氧化物的含量优选为全部氧化物的0.1-20重量%;当混合物含量低于0.1重量%时,不能获得例如电导性和防热性等性能,而且,产率显著降低;相反,当含量大于20重量%时,金属颜色很明显,而且,可见光的透明度不够,纤维板的特性丧失。此外,上述物理溅镀膜的厚度优选为5-500nm,特别地为30-300nm;当厚度低于5nm时,不能获得例如电导性、防热性、红外照射阻断、紫外照射阻断等功能,当厚度大于500nm时,就不能看见纤维板的结构纤维、颜色、图案等,从成本的观点来看,也很难达到实际运用。
而且,对于可见光在波长550nm的透光率,上述物理气相沉积膜的透光率优选为30%以上,当低于30%时,纤维板表面的颜色和图案[和]纤维不再是可见的,纤维板的特性丧失。
此外,红外线照射和紫外线照射的透光率是通过较低价的氧化物的混合物含量而确定的,但是,当目标是阻断红外线照射时,优选将上述混合物含量设定在较高水平并将波长1000nm的红外辐射透光率抑制到70%或更少。另外,当目标是阻断紫外线照射时,优选将上述混合含量设定在较低水平,并将波长400nm的紫外辐射透光率抑制到50%或更少。
附图说明
图1是涉及运行实施例1的溅镀装置的截面图。
图2是表示气相沉积膜的透光率的曲线图。
图3是表示气相沉积膜的光反射率的曲线图。
具体实施方式
发明实施例
实施例1
作为纤维板,利用使用聚酯纤维复丝纱作为经线和纬线的编织纤维,通过溅镀在纤维板表面形成厚度为5-50nm、优选为30-300nm的钛氧化物的透明涂层。
图1表示溅镀装置的一个例子,可密闭的反应室10被水平分隔物11分成位于下面的溅镀室12和位于上面的纤维室13,在下面的溅镀室12的中间,含有钛的平板靶14被固定于半空的靶源15上,利用经过该靶源15的冷水从底部冷却靶14。将阳极16水平地固定在靶14的右上方和左上方,在该阳极16和靶14之间,利用直流电源17,外加200-1000V的直流电压。
将水冷的圆筒18水平地固定在上述阳极13的上方并自由旋转,在其左上方和右上方分别水平地固定纤维板传送轴19和纤维板F卷绕轴20,而且,这些轴可以自由旋转。因此,缠绕在传送轴19周围的预处理纤维板F被拉出,并通过在左上方的导轮21被缠绕在上述水冷圆筒18周围,通过在右上方的导轮22而缠绕在卷绕轴20上。另外,将真空泵23、供应氩气的储气罐24和供应氧气的储气罐25分别连接于上述反应室10。
在上述装置中,转动传送轴19、卷绕轴20和水冷圆筒18,当纤维板F在水冷圆筒14上冷却时,以固定的速度沿逆时针方向传送纤维板F,将纤维板F的表面温度维持在60℃或更低。另一方面,驱动真空泵23降低反应室10的内压力至1.3×10-3Pa,接着,分别从供应氩气的储气罐24和供应氧气的储气罐25输入氩气和氧气以调节反应室10的内压力至大约1×10-2Pa,然后进行溅镀,从靶14发出的钛与氧气反应而形成钛氧化物,氧化物粘附在上述纤维板F上形成透明的物理气相沉积膜。
此时,当观察到通过靶14上方的等离子体的蒸发的钛的亮度时,进行溅镀;在这期间,通过调节从供应氧气的储气罐25输送至反应室10的氧气的量,将上述蒸发钛的发光度或者任何理想的与发光度相关的强度指标控制在上述试验测得的固定的水平;用这种方法,钛的氧化物包括普通氧化物和较低氧化物[混合物],形成较低氧化物的数量占金属氧化物的总量为0.1-20重量%的混合物吸附在纤维板F上。此外,调节纤维板F的移动速度,从而使含有上述钛氧化物的物理气相沉积膜的厚度为5-500nm。
在上述工作实施例中,当供应至反应室10的氧气量被设定得更高,并且,当发光度被设定得更低时,普通氧化物增加,较低价氧化物减少,物理气相沉积膜的透明度增加。另一方面,当供应的氧气量被设定得更低,并且,当发光度(强度)被设定得更高时,普通氧化物减少,较低价氧化物增加,物理气相沉积膜的透明度降低,金属颜色变得更强烈。而且,通过上述的发光度的调节,可以将可见光的透光率维持在20%或更高,而将红外射线的透光率或者紫外射线的透光率抑制在70%或更低。
通过使用含有聚酯纤维复丝纱的经编针织物(warp-knitfabric)作为上述纤维板,除此之外,通过按照上面的描述进行溅镀而获得具有导电性和防热性纤维板,此外,其被赋予经编针织物的特性,并具有30%或更高的可见光透光率、70%或更低的红外射线透光率或紫外射线透光率。
另外,通过使用含有聚酯长丝的纺丝粘合无纺织物作为上述纤维板,除此之外,通过按照上面的描述进行溅镀,从而获得具有导电性和防热性纤维板,其被赋予纺丝粘合的无纺织物特性,并具有30%或更高的可见光透光率、70%或更低的红外射线透光率或紫外射线透光率。
实施例2
利用图1中的溅镀装置,在含有编织物、针织品或者无纺织物等的纤维板的一个表面上进行溅镀,从而形成上述物理气相沉积膜,之后,暂时移开上述纤维板,然后,倒转正反面并重粘至溅镀装置,接着,与上述同样地在另一面上进行溅镀,从而制得纤维板,该纤维板在正反面上具有上述物理气相沉积膜,并具有30%或更高的可见光透光率、70%或更低的红外线透光率或者紫外线透光率,而且,其被赋予纤维板的特性以及可见的颜色和图案,而没有金属颜色。
实施例3
在上述密闭的反应室内,成排安装2套气相沉积装置,在正面和背面上连续地进行溅镀以形成上述物理气相沉积膜。例如,1号水冷圆筒和2号水冷圆筒平行地安装在密闭反应室内中心的左右两边,位于左边的1号水冷圆筒沿逆时针方向与位于右边的2号水冷圆筒沿着顺时针方向分别旋转;溅镀是通过从左边缠绕纤维板进行以至纤维板的背面与1号水冷圆筒的下半部分接触,接着,[板]通向2号水冷圆筒的右上方,溅镀通过从右边缠绕纤维板开始以至纤维板的正面与2号水冷圆筒的下半部分接触。
作为工作实施例1中的纤维板F,使用将聚酯复丝用于经线和纬纱的190支的塔夫绸(taddeta),通过溅镀在其中一个表面上形成钛氧化物的透明物理气相沉积膜。使用“双磁控管阴极等离子发射探测器”(“von Alden”,Germany)控制氧气供应量;利用准直管(collimator)发射出金属钛特有的单色光(波长453nm)而测定发光度,上述发光度表示为强度,其中,氧气供应为零时的发光度为100,氧气供应过量时的发光度为10;当强度设定为50时,获得试样A。还有,当强度设定为30时,获得试样B。
利用X射线光电子分光光度法分析试样A和试样B的物理气相沉积膜的组成。SSX-100型X射线光电子分光光度计(SSI Co.)用作分析装置。用单色的AlKα(100W)作为x射线发射源而进行分析,在强度为50的试样A中,在四价的普通氧化物中大约存在5%的三价的较低价氧化物Ti2O3。而且,在强度为30的试样B中,几乎全部用四价普通氧化物TiO2形成气相沉积膜。在试样A中,气相沉积膜中的钛和氧的比例为1/2.15,在试样B中为1/2.39。此外,比较上述试样A和试样B的外观,该比较结果与上述分析结果示于表1。
表1
试样A     试样B
强度气相沉积膜的厚度(μm)外观钛/氧(原子比例)低价氧化物含量 5050无色透明1/2.155%     3050无色透明1/2.390%
在厚度为50μm的透明薄膜上形成含有聚对苯二甲酸乙二醇酯(polyethylene terephthalate)的上述钛氧化物的气相沉积膜,从而测量上述气相沉积膜的电导性和透光率。此时,通过分6个步骤改变强度70,60,50,40,30,20而制备试样1-6。然后,分别对这些试样1-6测定电导性、波长400-1000nm的透光率和光反射率。电导性示于表2,透光率示于图2,光反射率示于图3。
表2
试样编号 1  2  3  4  5  6
强度 70  60  50  40  30  20
电导率(Ω/cm) 8×103  1×104  7×104  4×107  -  -
如上述表2所示,当按照阻力系数比较电导率时,强度为70、含有最低价氧化物的试样1具有最低的阻力系数;当较低价氧化物的量减少时,阻力系数按照强度为60的试样2、强度为50的试样3、强度为40的试样4的次序降低;不能测量强度为30的试样5和强度为20的试样6的阻力系数,其电导率基本为零。
此外,关于如图2所示的透光率,低强度的试样4-6具有高透光率,透明性增加,相反,高强度的试样1-3的透明度降低,外观表现出金属颜色的倾向。而且,强度为20的试样6,在包括紫外线和红外线、从波长400nm至1000nm的整个范围内的透光率为60%或更高。强度为30的试样5的波长400nm的紫外线透光率小于50%,但是,对于剩余的可见光和红外线,其透光率为50-70%。强度为40的试样4的红外线透光率小于70%,虽然表现出稍类似于试样3的趋势。
另外,强度为50的试样3,其波长550nm的可见光透光率约为50%,400nm的紫外线透光率约为45%,波长1000nm红外线透光率约为43%。此外,从波长400nm的紫外线至波长700nm的可见光范围内,强度为60的试样2表现出大致相等的在40-45%的范围内的透光率;波长超过700nm时,透光率逐渐降低,在红外线波长1000nm上的透光率约为35%。另外,从波长400nm的紫外线至波长1000nm的红外线范围内,强度为70的试样1的透光率从37%逐渐降低至30%,而且在波长400nm上,上述膜的透光率约为85%,在波长550nm上的透光率约为88%,在波长1000nm上的透光率约为89%;向右存在非常微弱的上升趋势。
另一方面,如图3所示,在低强度的试样4-6中,光反射率向右具有稍微的下降趋势,在高强度的试样1-3中,向右表现出稍微升高的趋势。然而,在可见光范围内的波长500-600nm上,强度为20的试样6表现出约28%的最高反射率,在紫外线一侧上存在突然下降的拐点,而红外线一侧是逐渐下降的,曲线呈现出山的形状。并且,在强度为30的试样5和强度为40的试样4中,向右的下降趋势差不多相同,波长400nm的反射率约为33%,波长1000nm的反射率为17-19%。
此外,在可见光范围内的波长500-600nm上,强度为50的试样3表现出约19%的最低反射率,波长400nm和1000nm的反射率从22%增加至23%。另外,在波长550nm以下,强度为60的试样2表现出大致相同的16-17%的光反射率,波长1000nm的光反射率逐渐上升至26%。另外,强度为70的试样1的光反射率大致与波长呈线性地增长,在波长400nm上约为18%,在波长1000nm上约为37%。而且,在400-1000nm的整个波长范围内,膜本身的光反射率表现出约11%的定值。
如上所述,由于在本发明涉及的功能性纤维板中,构成物理气相沉积膜的金属氧化物不但含有普通氧化物,还含有少量较低价氧化物,通过在混合物的量中设置较低价氧化物的量,可以保持气相沉积膜的透明性,而使得纤维板的颜色和图案变得可见,并保留了纤维板的流行性和特性,同时,利用气相沉积膜还提供了例如电导性、防热性、红外线阻断、紫外线阻断、防尘、抗菌和耐蚀等功能。而且,产率令人满意,并具有优异的洗涤性和抗剥落性。因此,上述功能性纤维板非常适合于用作工业材料,例如,网筛和过滤器等,昆虫网、房屋涂层材料以及户外帐篷、雨伞、室内装饰壁板材料、天花板材料和内部材料等,其具有优异的耐蚀性和洗涤性等,且能够满足流行性和各种功能性。
虽然上文描述了本发明的3个实施例,但是,应当理解为:在没有背离附后的权利要求书中体现的本发明的涵义和范围的条件下,可以对本发明进行改变和修正。

Claims (6)

1、一种功能性纤维板,含有合成纤维,其一面或者双面被涂覆含有金属氧化物的物理气相沉积膜,其中,所述金属氧化物含有普通氧化物作为主要成分和少量具有低于普通氧化物的化合价的氧化物作为次要成分的混合物。
2、根据权利要求1所述的功能性纤维板,其中,较低化合价氧化物占金属氧化物的总量的含量为0.1-20重量%,所述物理气相沉积膜的厚度为5-500nm。
3、根据权利要求1或2所述的功能性纤维板,其中,所述金属氧化物为钛氧化物,其普通氧化物为四价的氧化物,所述较低化合价的氧化物为二价或三价的氧化物。
4、一种制造功能性纤维板的方法,由下列步骤构成:
通过物理气相沉积法在纤维板上形成金属氧化物的物理气相沉积膜;
在物理气相沉积过程中通过增加供应的氧气量使普通氧化物作为物理气相沉积膜中的金属氧化物的主要成分;
在物理气相沉积过程中通过降低供应的氧气量,使少量具有低于普通氧化物的化合价的氧化物作为金属氧化物的次要成分。
5、根据权利要求1所述的功能性纤维板,其中,合成纤维包括用于通常的针织和编织的合成纤维。
6、根据权利要求1所述的功能性纤维板,其中,合成纤维包括聚酯纤维、尼龙纤维、聚丙烯腈纤维或者聚酰亚胺纤维。
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EP1497477B1 (en) 2007-02-28
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ES2282612T3 (es) 2007-10-16
CN100465329C (zh) 2009-03-04
WO2003091472A1 (en) 2003-11-06
EP1497477A1 (en) 2005-01-19
ATE355394T1 (de) 2006-03-15
US7579290B2 (en) 2009-08-25
DE60312148D1 (de) 2007-04-12
US20050221707A1 (en) 2005-10-06
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