CN115073004A - High-temperature sealant - Google Patents
High-temperature sealant Download PDFInfo
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- CN115073004A CN115073004A CN202210646413.1A CN202210646413A CN115073004A CN 115073004 A CN115073004 A CN 115073004A CN 202210646413 A CN202210646413 A CN 202210646413A CN 115073004 A CN115073004 A CN 115073004A
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- 239000000565 sealant Substances 0.000 title claims abstract description 47
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 claims abstract description 42
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011521 glass Substances 0.000 claims abstract description 31
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 21
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000292 calcium oxide Substances 0.000 claims abstract description 21
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052810 boron oxide Inorganic materials 0.000 claims abstract description 16
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 12
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000630 rising effect Effects 0.000 abstract 2
- ADQUQHZAQKMUDV-UHFFFAOYSA-N barium boron Chemical compound [B].[Ba] ADQUQHZAQKMUDV-UHFFFAOYSA-N 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 10
- 239000002671 adjuvant Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
技术领域technical field
本发明涉及密封胶领域，更具体地说，它涉及一种高温密封胶。The present invention relates to the field of sealant, and more particularly, to a high-temperature sealant.
背景技术Background technique
对于存在不锈钢器件和陶瓷器件的高温反应器的应用过程中，需要对不锈钢与不锈钢之间、陶瓷与陶瓷之间以及不锈钢与陶瓷之间进行密封，并且要求密封有良好的气密性，高温（1000℃以下）下可以长期使用，化学性质稳定。而具备这样功能的密封胶通常由陶瓷材料或者玻璃材料制成。For the application of high-temperature reactors with stainless steel devices and ceramic devices, it is necessary to seal between stainless steel and stainless steel, between ceramics and ceramics, and between stainless steel and ceramics, and the seals are required to have good air tightness, high temperature ( It can be used for a long time under 1000 ℃), and its chemical properties are stable. The sealant with such a function is usually made of ceramic material or glass material.
在使用中，这些密封胶通常会设计成与不锈钢、陶瓷材料具有相近似的热膨胀系数，借此来防止在多次的升温降温操作中出现密封胶开裂的问题。但是，由于陶瓷和不锈钢本身的热膨胀系数并不完全匹配，而且密封胶的热膨胀系数也很难在全温度区间内和两者均完美匹配，升温降温中，密封胶开裂的现象仍然频繁出现，造成设备漏气，甚至产生安全隐患。In use, these sealants are usually designed to have similar thermal expansion coefficients as stainless steel and ceramic materials, so as to prevent the sealant from cracking during repeated heating and cooling operations. However, due to the fact that the thermal expansion coefficients of ceramics and stainless steel are not completely matched, and it is difficult for the thermal expansion coefficient of the sealant to perfectly match the two in the full temperature range, the cracking of the sealant still occurs frequently during heating and cooling, resulting in The equipment leaks, and even creates a safety hazard.
发明内容SUMMARY OF THE INVENTION
针对现有技术存在的不足，本发明的目的在于提供一种高温密封胶，其在高温下会软化，形成一种高粘度的玻璃体，则无需匹配不同被粘接材料之间的热膨胀系数，而且即使在升温降温过程中出现了裂纹，在软化时裂纹又会自动愈合，从而能够提高密封效果以及密封的持久性。In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-temperature sealant, which will soften at high temperature to form a high-viscosity glass body without matching the thermal expansion coefficients between different bonded materials, and Even if cracks appear in the process of heating and cooling, the cracks will automatically heal when softened, which can improve the sealing effect and the durability of the sealing.
为实现上述目的，本发明提供了如下技术方案：For achieving the above object, the present invention provides the following technical solutions:
一种高温密封胶，包括氧化钡和氧化硼，还包括辅助剂，所述辅助剂包括氧化铝、氧化钙和氧化锶，所述辅助剂还包括氧化锌和氧化硅中的至少一种；A high-temperature sealant, comprising barium oxide and boron oxide, and an adjuvant, the adjuvant comprising aluminum oxide, calcium oxide and strontium oxide, and the adjuvant further comprising at least one of zinc oxide and silicon oxide;
密封胶在升温过程中由高弹态转变为软化的玻璃态，利用软化的玻璃态来实现高温状态下的柔性密封。The sealant changes from a high elastic state to a softened glass state during the heating process, and the softened glass state is used to achieve flexible sealing at high temperature.
进一步地，密封胶的玻璃态软化温度为600℃～750℃。Further, the glass softening temperature of the sealant is 600°C to 750°C.
进一步地，所述氧化钡的质量百分比为15%～40%，所述氧化硼的质量百分比为30%～50%。Further, the mass percentage of the barium oxide is 15% to 40%, and the mass percentage of the boron oxide is 30% to 50%.
进一步地，所述辅助剂包括氧化铝、氧化钙、氧化锶和氧化锌；Further, the adjuvant includes alumina, calcium oxide, strontium oxide and zinc oxide;
其中，所述氧化钡的质量百分比为19%～40%，所述氧化硼的质量百分比为30%～50%，所述氧化铝的质量百分比为8%～13%，所述氧化钙的质量百分比为1%～5%，所述氧化锶的质量百分比为3%～8%，所述氧化锌的质量百分比为2%～5%；Wherein, the mass percentage of the barium oxide is 19% to 40%, the mass percentage of the boron oxide is 30% to 50%, the mass percentage of the alumina is 8% to 13%, and the mass percentage of the calcium oxide is 8% to 13%. The percentage is 1% to 5%, the mass percentage of the strontium oxide is 3% to 8%, and the mass percentage of the zinc oxide is 2% to 5%;
此时，密封胶的玻璃态软化温度为600℃～740℃。At this time, the glass softening temperature of the sealant is 600°C to 740°C.
进一步地，所述辅助剂包括氧化铝、氧化钙、氧化锶和氧化硅；Further, the auxiliary agent includes aluminum oxide, calcium oxide, strontium oxide and silicon oxide;
其中，所述氧化钡的质量百分比为15%～40%，所述氧化硼的质量百分比为30%～50%，所述氧化铝的质量百分比为3%～10%，所述氧化钙的质量百分比为2%～8%，所述氧化锶的质量百分比为3%～10%，所述氧化硅的质量百分比为18%～35%；Wherein, the mass percentage of the barium oxide is 15% to 40%, the mass percentage of the boron oxide is 30% to 50%, the mass percentage of the alumina is 3% to 10%, and the mass percentage of the calcium oxide is 3% to 10%. The percentage is 2% to 8%, the mass percentage of the strontium oxide is 3% to 10%, and the mass percentage of the silicon oxide is 18% to 35%;
此时，密封胶的玻璃态软化温度为650℃～720℃。At this time, the glass softening temperature of the sealant is 650°C to 720°C.
进一步地，所述辅助剂包括氧化铝、氧化钙、氧化锶和氧化硅；Further, the auxiliary agent includes aluminum oxide, calcium oxide, strontium oxide and silicon oxide;
其中，所述氧化钡的质量百分比为15%～40%，所述氧化硼的质量百分比为30%～50%，所述氧化铝的质量百分比为4%～8%，所述氧化钙的质量百分比为2%～4%，所述氧化锶的质量百分比为4%～8%，所述氧化硅的质量百分比为12%～18%；Wherein, the mass percentage of the barium oxide is 15% to 40%, the mass percentage of the boron oxide is 30% to 50%, the mass percentage of the alumina is 4% to 8%, and the mass percentage of the calcium oxide is 4% to 8%. The percentage is 2% to 4%, the mass percentage of the strontium oxide is 4% to 8%, and the mass percentage of the silicon oxide is 12% to 18%;
此时，密封胶的玻璃态软化温度为670℃～750℃。At this time, the glass softening temperature of the sealant is 670°C to 750°C.
综上所述，本发明具有以下有益效果：To sum up, the present invention has the following beneficial effects:
利用主要材料与辅助剂的配合使得密封胶在升温过程中由高弹态转变为软化的玻璃态，利用软化的玻璃态来实现高温状态下的柔性密封；软化的玻璃态的密封胶形成一种高粘度的玻璃体，此时胶是柔性的，则无需匹配不同被粘接材料之间的热膨胀系数，能够提高密封效果；而且，即使密封胶在多次的升温降温过程中出现了裂纹，在下一次升温后，密封胶高温又会转变化软化的玻璃态，此时裂纹就会自动愈合，从而能够提高密封的持久性。Using the combination of main materials and auxiliary agents, the sealant changes from a high elastic state to a softened glass state during the heating process, and the softened glass state is used to achieve flexible sealing at high temperature; the softened glass state sealant forms a kind of High viscosity glass body, when the glue is flexible, it is not necessary to match the thermal expansion coefficient between different materials to be bonded, which can improve the sealing effect; moreover, even if the sealant has cracks in the process of heating and cooling many times, the next time After heating up, the high temperature of the sealant will change to a softened glass state, and the cracks will heal automatically at this time, thereby improving the durability of the seal.
具体实施方式Detailed ways
本具体实施例仅仅是对本发明的解释，其并不是对本发明的限制，本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改，但只要在本发明的权利要求范围内都受到专利法的保护。This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.
实施例：Example:
一种高温密封胶，其主要材料包括氧化钡和氧化硼，还包括辅助剂，辅助剂包括氧化铝、氧化钙和氧化锶，辅助剂还包括氧化锌和氧化硅中的至少一种；本实施例中利用主要材料与辅助剂的配合使得密封胶在升温过程中由高弹态转变为软化的玻璃态，利用软化的玻璃态来实现高温状态下的柔性密封；软化的玻璃态的密封胶形成一种高粘度的玻璃体，此时胶是柔性的，则无需匹配不同被粘接材料之间的热膨胀系数，能够提高密封效果；而且，即使密封胶在多次的升温降温过程中出现了裂纹，在下一次升温后，密封胶高温又会转变化软化的玻璃态，此时裂纹就会自动愈合，从而能够提高密封的持久性。A high-temperature sealant, the main materials of which include barium oxide and boron oxide, and an auxiliary agent, the auxiliary agent includes aluminum oxide, calcium oxide and strontium oxide, and the auxiliary agent also includes at least one of zinc oxide and silicon oxide; this embodiment In the example, the combination of main materials and auxiliary agents makes the sealant change from a high elastic state to a softened glass state during the heating process, and the softened glass state is used to achieve flexible sealing at high temperature; the softened glass state sealant is formed. A high-viscosity glass body, when the glue is flexible, does not need to match the thermal expansion coefficient between different bonded materials, which can improve the sealing effect; moreover, even if the sealant has cracks in the process of heating and cooling for many times, After the next temperature rise, the high temperature of the sealant will change to a softened glass state, and the cracks will automatically heal, thereby improving the durability of the seal.
优选地，密封胶的玻璃态软化温度为600℃～750℃；密封胶在1000℃以下的高温环境中长期使用，则本实施例中密封胶适用的高温状态为600℃～1000℃，此时密封胶能够转变为软化的玻璃态，从而来实现柔性密封。Preferably, the glass softening temperature of the sealant is 600°C to 750°C; if the sealant is used for a long time in a high temperature environment below 1000°C, the applicable high temperature state of the sealant in this embodiment is 600°C to 1000°C. The sealant can be transformed into a softened glass state to achieve a flexible seal.
具体地，本实施例中氧化钡的质量百分比为15%～40%，氧化硼的质量百分比为30%～50%，而通过调节辅助剂中各成分的比例，可以调节密封胶的软化温度，来匹配不同的高温反应器。Specifically, in this embodiment, the mass percentage of barium oxide is 15% to 40%, and the mass percentage of boron oxide is 30% to 50%. By adjusting the ratio of each component in the auxiliary agent, the softening temperature of the sealant can be adjusted, to match different high temperature reactors.
具体地，辅助剂包括氧化铝、氧化钙、氧化锶和氧化锌；其中，氧化钡的质量百分比为19%～40%，氧化硼的质量百分比为30%～50%，氧化铝的质量百分比为8%～13%，氧化钙的质量百分比为1%～5%，氧化锶的质量百分比为3%～8%，氧化锌的质量百分比为2%～5%；此时，密封胶的玻璃态转化温度为550℃～600℃，软化温度为600℃～740℃。Specifically, the adjuvant includes alumina, calcium oxide, strontium oxide and zinc oxide; wherein, the mass percentage of barium oxide is 19% to 40%, the mass percentage of boron oxide is 30% to 50%, and the mass percentage of alumina is 8% to 13%, the mass percentage of calcium oxide is 1% to 5%, the mass percentage of strontium oxide is 3% to 8%, and the mass percentage of zinc oxide is 2% to 5%; at this time, the glassy state of the sealant The transformation temperature is 550°C to 600°C, and the softening temperature is 600°C to 740°C.
具体地，辅助剂包括氧化铝、氧化钙、氧化锶和氧化硅；其中，氧化钡的质量百分比为15%～40%，氧化硼的质量百分比为30%～50%，氧化铝的质量百分比为3%～10%，氧化钙的质量百分比为2%～8%，氧化锶的质量百分比为3%～10%，氧化硅的质量百分比为18%～35%；此时，密封胶的玻璃态转化温度为600℃～650℃，软化温度为650℃～720℃。Specifically, the adjuvant includes alumina, calcium oxide, strontium oxide and silicon oxide; wherein, the mass percentage of barium oxide is 15% to 40%, the mass percentage of boron oxide is 30% to 50%, and the mass percentage of alumina is 3% to 10%, the mass percentage of calcium oxide is 2% to 8%, the mass percentage of strontium oxide is 3% to 10%, and the mass percentage of silicon oxide is 18% to 35%; at this time, the glassy state of the sealant The transformation temperature is 600°C to 650°C, and the softening temperature is 650°C to 720°C.
具体地，辅助剂包括氧化铝、氧化钙、氧化锶和氧化硅；其中，氧化钡的质量百分比为15%～40%，氧化硼的质量百分比为30%～50%，氧化铝的质量百分比为4%～8%，氧化钙的质量百分比为2%～4%，氧化锶的质量百分比为4%～8%，氧化硅的质量百分比为12%～18%；此时，密封胶的玻璃态转化温度为630℃～670℃，软化温度为670℃～750℃。Specifically, the adjuvant includes alumina, calcium oxide, strontium oxide and silicon oxide; wherein, the mass percentage of barium oxide is 15% to 40%, the mass percentage of boron oxide is 30% to 50%, and the mass percentage of alumina is 4% to 8%, the mass percentage of calcium oxide is 2% to 4%, the mass percentage of strontium oxide is 4% to 8%, and the mass percentage of silicon oxide is 12% to 18%; at this time, the glassy state of the sealant The transformation temperature is 630°C to 670°C, and the softening temperature is 670°C to 750°C.
当然，辅助剂的各成分还可以选择其它比例范围来调整软化温度，辅助剂中也可以添加其它成分，在此不作限制。Of course, other proportions of the components of the adjuvant can also be selected to adjust the softening temperature, and other components can also be added to the adjuvant, which is not limited here.
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| CN101164939A (en) * | 2006-10-19 | 2008-04-23 | 北京印刷学院 | Leadless barium borate low melting glass and application thereof |
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