CN108673969B - 一种碳纤维保温固化毡 - Google Patents

一种碳纤维保温固化毡 Download PDF

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CN108673969B
CN108673969B CN201810493999.6A CN201810493999A CN108673969B CN 108673969 B CN108673969 B CN 108673969B CN 201810493999 A CN201810493999 A CN 201810493999A CN 108673969 B CN108673969 B CN 108673969B
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曾国伟
乔晓东
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Zhejiang Xinghui New Material Technology Co.,Ltd.
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Abstract

本发明提出一种碳纤维保温固化毡，包括内毡层、中毡层以及外毡层，内毡层及外毡层分别贴附于中毡层两侧，内毡层、中毡层及外毡层的密度依次降低，其厚度依次增加，其中，内毡层采用碳/碳复合材料板充任，中毡层以及外毡层采用碳纤维硬毡充任。该碳纤维固化毡的内毡层、中毡层已经外毡层之间通过树脂与碳型粘结剂来复合，通过增加碳型粘结剂和提高内侧保温毡的密度，可以有效提升内毡层的抗高温形变能力，该结构成本相对较低，而分体式结构的内毡层是通过沉头螺母与硬毡固定的，为了解决薄碳板的固定问题，将碳板压制成局部加强的异型结构，当碳/碳防护板失效后，只需更换最里层的防护板，有利于降低故障率，延长使用寿命。

Description

一种碳纤维保温固化毡
技术领域
本发明涉及碳纤维材料，尤其涉及一种碳纤维保温固化毡。
背景技术
随着光伏产业的发展，晶体硅的需求量与日俱增，作为晶体硅铸锭炉耗材之一的隔热屏的需求量也在不断增加。传统隔热材料由于其使用温度低(＜1800℃)，污染大，并且难以做成薄型隔热层，增大了炉体体积，从而限制了其在晶体生长炉中的应用。而新型炭质隔热材料—炭毡由于具有导热系数小、热容量低、密度小、线膨胀系数小、耐高温、耐热冲击强、耐化学腐蚀性强、高纯无污染等优异性能，已经成为晶体硅铸锭炉最主要的隔热材料。常用的碳纤维保温毡在抗氧化、保温性能等方面还有提升的空间，使用寿命较短，故障率较高。因此，有必要对这种单纤维保温毡进行结构优化，以克服上述缺陷。
发明内容
本发明的目的是提供一种碳纤维保温固化毡，以延长使用寿命，降低故障率。
本发明为解决其技术问题所采用的技术方案是：
一种碳纤维保温固化毡，包括内毡层、中毡层以及外毡层，内毡层及外毡层分别贴附于中毡层两侧，内毡层、中毡层及外毡层的密度依次降低，其厚度依次增加，其中，内毡层采用碳/碳复合材料板充任，中毡层以及外毡层采用碳纤维硬毡充任。
在本发明的一个实施例中，中毡层与内毡层及外毡层之间采用粘结剂接合。
具体地，中毡层与内毡层及外毡层之间采用树脂与碳纤维粘结剂接合。
在本发明的另一个实施例中，内毡层的接合面具有一组凸块，各凸块在内毡层上均匀排布，并向内毡层外部凸起，中毡层中具有一组与凸块适配的嵌孔，嵌孔的位置与凸块位置对应，凸块伸入嵌孔中，外毡层中具有一组连接孔，连接孔的位置与嵌孔的位置对应，连接孔中设有连接螺杆，连接螺杆尾端向连接孔外部伸出，凸块中具有定位孔，定位孔中设有连接螺帽，连接螺杆尾端与连接螺帽接合，使内毡层、中毡层以及外毡层固定连接。
另外，定位孔底部具有锥形端口，连接螺帽底部具有与之适配的锥形端头，锥形端头抵住锥形端口，定位孔中具有内螺纹，连接螺帽外壁具有与之适配的外螺纹，连接螺帽旋入定位孔中，使连接螺帽在定位孔中保持固定；
连接孔顶部具有扩径口，连接螺栓顶部具有限位端头，限位端头位于扩径口内，扩径口的深度大于限位端头的厚度，扩径口中还装设有硬毡堵头，由硬毡堵头将扩径口的开口封住。
本发明的优点在于：
该碳纤维固化毡的内毡层、中毡层已经外毡层之间通过树脂与碳型粘结剂来复合，通过增加碳型粘结剂和提高内侧保温毡的密度，可以有效提升内毡层的抗高温形变能力，该结构成本相对较低，而分体式结构的内毡层是通过沉头螺母与硬毡固定的，为了解决薄碳板的固定问题，将碳板压制成局部加强的异型结构，采用此结构的固化毡，当碳/碳防护板失效后，只需更换最里层的防护板，且更换非常方便，无需拆除顶板和侧板，有利于降低故障率，延长使用寿命。
附图说明
图1是本发明提出的碳纤维保温固化毡的结构示意图之一；
图2是该碳纤维保温固化毡的结构示意图之二；
图3是图2中碳纤维保温固化毡的剖面图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合图示与具体实施例，进一步阐述本发明。
如图1、图2、图3所示，本发明提出的碳纤维保温固化毡包括内毡层、中毡层以及外毡层，内毡层及外毡层分别贴附于中毡层两侧，内毡层、中毡层及外毡层的密度依次降低，其厚度依次增加，其中，内毡层采用碳/碳复合材料板充任，中毡层以及外毡层采用碳纤维硬毡充任。在图1所示的实施例中，中毡层02与内毡层03及外毡层01之间采用粘结剂接合。具体地，中毡层与内毡层及外毡层之间采用树脂与碳纤维粘结剂接合。
在图2、图3所示的实施例中，内毡层13的接合面具有一组凸块14，各凸块在内毡层上均匀排布，并向内毡层外部凸起，中毡层12中具有一组与凸块适配的嵌孔，嵌孔的位置与凸块位置对应，凸块伸入嵌孔中，外毡层11中具有一组连接孔，连接孔的位置与嵌孔的位置对应，连接孔中设有连接螺杆15，连接螺杆尾端向连接孔外部伸出，凸块中具有定位孔，定位孔中设有连接螺帽16，连接螺杆尾端与连接螺帽接合，使内毡层、中毡层以及外毡层固定连接。另外，定位孔底部具有锥形端口，连接螺帽底部具有与之适配的锥形端头，锥形端头抵住锥形端口，定位孔中具有内螺纹，连接螺帽外壁具有与之适配的外螺纹，连接螺帽旋入定位孔中，使连接螺帽在定位孔中保持固定；连接孔顶部具有扩径口，连接螺栓顶部具有限位端头，限位端头位于扩径口内，扩径口的深度大于限位端头的厚度，扩径口中还装设有硬毡堵头，由硬毡堵头17将扩径口的开口封住。碳/碳复合材料(c-c composite or carbon-carbon composite material)是碳纤维及其织物增强的碳基体复合材料。具有低密度(<2.0g/cm3)、高强度、高比模量、高导热性、低膨胀系数、摩擦性能好，以及抗热冲击性能好、尺寸稳定性高等优点，是如今在1650℃以上应用的少数备选材料，最高理论温度更高达2600℃，因此被认为是最有发展前途的高温材料之一。该碳纤维固化毡的内毡层、中毡层已经外毡层之间通过树脂与碳型粘结剂来复合，通过增加碳型粘结剂和提高内侧保温毡的密度，可以有效提升内毡层的抗高温形变能力，该结构成本相对较低，而分体式结构的内毡层是通过沉头螺母与硬毡固定的，为了解决薄碳板的固定问题，将碳板压制成局部加强的异型结构，采用此结构的固化毡，当碳/碳防护板失效后，只需更换最里层的防护板，且更换非常方便，无需拆除顶板和侧板，有利于降低故障率，延长使用寿命。
以上实施方式只为说明本发明的技术构思及特点，其目的在于让本领域的技术人员了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所做的等效变化或修饰，都应涵盖在本发明的保护范围内。

Claims (5)

1.一种碳纤维保温固化毡，包括内毡层、中毡层以及外毡层，内毡层及外毡层分别贴附于中毡层两侧，其特征在于：
内毡层、中毡层及外毡层的密度依次降低，其厚度依次增加，其中，内毡层采用碳/碳复合材料板充任，中毡层以及外毡层采用碳纤维硬毡充任；
内毡层的接合面具有一组凸块，各凸块在内毡层上均匀排布，并向内毡层外部凸起，中毡层中具有一组与凸块适配的嵌孔，嵌孔的位置与凸块位置对应，凸块伸入嵌孔中，外毡层中具有一组连接孔，连接孔的位置与嵌孔的位置对应，连接孔中设有连接螺杆，连接螺杆尾端向连接孔外部伸出，凸块中具有定位孔，定位孔中设有连接螺帽，连接螺杆尾端与连接螺帽接合，使内毡层、中毡层以及外毡层固定连接。
2.根据权利要求1所述的一种碳纤维保温固化毡，其特征在于：
中毡层与内毡层及外毡层之间采用粘结剂接合。
3.根据权利要求2所述的一种碳纤维保温固化毡，其特征在于:
中毡层与内毡层及外毡层之间采用树脂与碳纤维粘结剂接合。
4.根据权利要求1所述的一种碳纤维保温固化毡，其特征在于:
定位孔底部具有锥形端口，连接螺帽底部具有与之适配的锥形端头，锥形端头抵住锥形端口，定位孔中具有内螺纹，连接螺帽外壁具有与之适配的外螺纹，连接螺帽旋入定位孔中，使连接螺帽在定位孔中保持固定。
5.根据权利要求1所述的一种碳纤维保温固化毡，其特征在于:
连接孔顶部具有扩径口，连接螺栓顶部具有限位端头，限位端头位于扩径口内，扩径口的深度大于限位端头的厚度，扩径口中还装设有硬毡堵头，由硬毡堵头将扩径口的开口封住。
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CN113847481A (zh) * 2021-12-01 2021-12-28 中国飞机强度研究所 一种飞机测试用阀门式通风装置

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