CN108055711A - 一种高强度蓄热式电锅炉用电热元件的制备方法 - Google Patents
一种高强度蓄热式电锅炉用电热元件的制备方法 Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 238000005338 heat storage Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 28
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical class CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001556 precipitation Methods 0.000 claims abstract description 12
- 239000011737 fluorine Substances 0.000 claims abstract description 7
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 7
- 238000000748 compression moulding Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000011017 operating method Methods 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims description 5
- 150000002170 ethers Chemical class 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 5
- 235000011160 magnesium carbonates Nutrition 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000011295 pitch Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
本发明公开一种高强度蓄热式电锅炉用电热元件的制备方法，包括以下操作步骤：（1）将碳化硅加入至γ‑氨丙基三乙氧基硅烷中，将混合物的温度升至150‑200℃后，保温处理40‑50min后，过滤得到沉淀，然后将沉淀烘干后，制得改性碳化硅；（2）将改性碳化硅、碱式碳酸镁、氟碳环醚、沥青混合均匀后，然后采用压力机，压制成型，最后进行烧结处理后，制得成品。本发明制得的电热元件，发热效果显著，具有极其优异的强度，不易在使用的过程中，发生破碎的现象。
Description
技术领域
本发明属于电热元件制备技术领域，具体涉及一种高强度蓄热式电锅炉用电热元件的制备方法。
背景技术
电热元件指电能通过电阻元件把电能转变为热能的技术应用。硅碳元件及硅钼元件使用温度较高，质硬而脆，成型后使用，如碳化硅制成的硅碳棒、硅碳管最高发热温度1500℃。现有技术中，蓄热式电锅炉采用的主要电热元件为碳化硅电热元件，其发热效果显著，能量的转化率高，但是其存在着力学性能较差的弊端。
发明内容
为了解决上述技术问题，本发明提供一种高强度蓄热式电锅炉用电热元件的制备方法。
本发明是通过以下技术方案实现的。
一种高强度蓄热式电锅炉用电热元件的制备方法，包括以下操作步骤：
（1）将碳化硅加入至γ-氨丙基三乙氧基硅烷中，将混合物的温度升至150-200℃后，保温处理40-50min后，过滤得到沉淀，然后将沉淀烘干后，制得改性碳化硅；
（2）按重量份计，将65-70份改性碳化硅、1-3份碱式碳酸镁、4-8份氟碳环醚、14-16份沥青混合均匀后，然后采用压力机，压制成型，最后进行烧结处理后，制得成品。
具体地，上述步骤（1）中，碳化硅与γ-氨丙基三乙氧基硅烷的质量比为1:5-7。
具体地，上述步骤（1）中，烘干的温度为110-120℃。
具体地，上述步骤（2）中，压力机压制时的压力为50-55t。
具体地，上述步骤（2）中，烧结的温度为1750-1800℃。
由以上的技术方案可知，本发明的有益效果是：
本发明提供的一种高强度蓄热式电锅炉用电热元件的制备方法，操作简单，成本低廉，工艺稳定，制得的电热元件，发热效果显著，性能优异，尤其是其具有极其优异的强度，强度可达74MPa，不易在使用的过程中，发生破碎的现象，与现有技术制得的碳化硅电热元件相比，强度提升了15%左右。其中，步骤（1）中的γ-氨丙基三乙氧基硅烷可有效的提升压制成型的效果，增强沥青粘结剂对碳化硅的粘结强度；氟碳环醚的添加，可有效的提升碳化硅晶体形态的完整性，进而有效的提升了电热元件的强度。
具体实施方式
以下实施例用于说明本发明，但不能用来限制本发明的范围。实施例中采用的实施条件可以根据厂家的条件作进一步调整，未说明的实施条件通常为常规实验条件。
实施例1
一种高强度蓄热式电锅炉用电热元件的制备方法，包括以下操作步骤：
（1）将碳化硅加入至γ-氨丙基三乙氧基硅烷中，将混合物的温度升至150℃后，保温处理40min后，过滤得到沉淀，然后将沉淀烘干后，制得改性碳化硅；
（2）按重量份计，将65份改性碳化硅、1份碱式碳酸镁、4份氟碳环醚、14份沥青混合均匀后，然后采用压力机，压制成型，最后进行烧结处理后，制得成品。
具体地，上述步骤（1）中，碳化硅与γ-氨丙基三乙氧基硅烷的质量比为1:5。
具体地，上述步骤（1）中，烘干的温度为110℃。
具体地，上述步骤（2）中，压力机压制时的压力为50t。
具体地，上述步骤（2）中，烧结的温度为1750℃。
实施例2
一种高强度蓄热式电锅炉用电热元件的制备方法，包括以下操作步骤：
（1）将碳化硅加入至γ-氨丙基三乙氧基硅烷中，将混合物的温度升至180℃后，保温处理45min后，过滤得到沉淀，然后将沉淀烘干后，制得改性碳化硅；
（2）按重量份计，将68份改性碳化硅、2份碱式碳酸镁、6份氟碳环醚、15份沥青混合均匀后，然后采用压力机，压制成型，最后进行烧结处理后，制得成品。
具体地，上述步骤（1）中，碳化硅与γ-氨丙基三乙氧基硅烷的质量比为1:6。
具体地，上述步骤（1）中，烘干的温度为115℃。
具体地，上述步骤（2）中，压力机压制时的压力为53t。
具体地，上述步骤（2）中，烧结的温度为1780℃。
实施例3
一种高强度蓄热式电锅炉用电热元件的制备方法，包括以下操作步骤：
（1）将碳化硅加入至γ-氨丙基三乙氧基硅烷中，将混合物的温度升至200℃后，保温处理50min后，过滤得到沉淀，然后将沉淀烘干后，制得改性碳化硅；
（2）按重量份计，将70份改性碳化硅、3份碱式碳酸镁、8份氟碳环醚、16份沥青混合均匀后，然后采用压力机，压制成型，最后进行烧结处理后，制得成品。
具体地，上述步骤（1）中，碳化硅与γ-氨丙基三乙氧基硅烷的质量比为1:7。
具体地，上述步骤（1）中，烘干的温度为120℃。
具体地，上述步骤（2）中，压力机压制时的压力为55t。
具体地，上述步骤（2）中，烧结的温度为1800℃。
需要说明的是，以上实施例仅用以说明本发明的技术方案而非限制。尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的范围，其均应涵盖在本发明的权利要求范围中。
Claims (5)
1.一种高强度蓄热式电锅炉用电热元件的制备方法，其特征在于，包括以下操作步骤：
（1）将碳化硅加入至γ-氨丙基三乙氧基硅烷中，将混合物的温度升至150-200℃后，保温处理40-50min后，过滤得到沉淀，然后将沉淀烘干后，制得改性碳化硅；
（2）按重量份计，将65-70份改性碳化硅、1-3份碱式碳酸镁、4-8份氟碳环醚、14-16份沥青混合均匀后，然后采用压力机，压制成型，最后进行烧结处理后，制得成品。
2.根据权利要求1所述的一种高强度蓄热式电锅炉用电热元件的制备方法，其特征在于，上述步骤（1）中，碳化硅与γ-氨丙基三乙氧基硅烷的质量比为1:5-7。
3.根据权利要求1所述的一种高强度蓄热式电锅炉用电热元件的制备方法，其特征在于，上述步骤（1）中，烘干的温度为110-120℃。
4.根据权利要求1所述的一种高强度蓄热式电锅炉用电热元件的制备方法，其特征在于，上述步骤（2）中，压力机压制时的压力为50-55t。
5.根据权利要求1所述的一种高强度蓄热式电锅炉用电热元件的制备方法，其特征在于，上述步骤（2）中，烧结的温度为1750-1800℃。
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|---|---|---|---|---|
| CN2036262U (zh) * | 1988-07-22 | 1989-04-19 | 王道顺 | 气电两用取暖炉 |
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| CN1458810A (zh) * | 2003-05-30 | 2003-11-26 | 北京东方慧辰碳纤维科技有限公司 | 一种碳材料的高温远红外辐射电热体及其制备方法 |
| US20100041541A1 (en) * | 2006-09-20 | 2010-02-18 | Ube Industries, Ltd. | SiC FIBER-BONDED CERAMIC AND PROCESS FOR PRODUCTION OF THE SAME |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036262U (zh) * | 1988-07-22 | 1989-04-19 | 王道顺 | 气电两用取暖炉 |
| CN1265402A (zh) * | 2000-03-24 | 2000-09-06 | 清华大学 | 一种碳化硅颗粒填充铸型尼龙复合材料的制备方法 |
| CN1458810A (zh) * | 2003-05-30 | 2003-11-26 | 北京东方慧辰碳纤维科技有限公司 | 一种碳材料的高温远红外辐射电热体及其制备方法 |
| US20100041541A1 (en) * | 2006-09-20 | 2010-02-18 | Ube Industries, Ltd. | SiC FIBER-BONDED CERAMIC AND PROCESS FOR PRODUCTION OF THE SAME |
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