baber/WOPTO huggingface dataset:
Patent WO-2018068620-A1 (WO)
Title: 一种自行车拖车
Inventor: LIAO ZHANGHUA
IPC: B62K13/02
Filed: 2017-09-21
Abstract: 一种自行车拖车，包括第一自行车（1）、至少一个第二自行车（2）和至少一个连接结构（3）。第二自行车具有可转向的前叉竖管（21）；连接结构为三叉连接杆，三叉连接杆由第一枝杈（31）、第二枝杈（32）和直杆（33）构成；第一枝杈与第二自行车的前叉竖管的上端连接，第二枝杈与第二自行车的前叉竖管的下端连接，直杆与第一自行车连接。第二自行车的数量与连接结构的数量一致。这种自行车拖车无需配置转轴结构即可实现后自行车的转向功能，结构简单、成本较低；同时，采用三叉连接杆结构，提高了第二自行车的稳定性。
Patent WO-2018059388-A1 (WO)
Inventor: CHEN NINGYU
IPC: H04W48/06
Filed: 2017-09-26
Abstract: La présente invention concerne un procédé de commande de commutation, un terminal, une station de base source, et une station de base cible. Dans un processus de commutation fourni dans la présente invention, une détermination de CA-CC est réalisée par une station de base source, la station cible, ou un terminal, en prenant en considération des conditions de commande d'accès de diverses applications par rapport à une station de base cible.
Patent WO-2018149169-A1 (WO)
Title: 空调参数横向滑动选择方法及系统
Inventor: HE XIANJUN
IPC: F24F11/00
Filed: 2017-10-25
Abstract: 一种空调参数横向滑动选择方法,包括：接收用户在横向滑动选择界面上输入的触摸事件；获取圆环参数模型中的多个预设空调参数数据在横向滑动选择界面的预定区域中显示的初始空调参数数据；由触摸事件中提取触摸事件的起始信息和终止信息，并根据起始信息和终止信息计算出圆环参数模型转动的转动角度；根据转动角度和初始空调参数数据确定用户在圆环参数模型中选中的第一预设空调参数数据，并将第一预设空调参数数据在预定区域中显示出来。还涉及一种空调参数横向滑动选择系统。
Patent WO-2018227842-A1 (WO)
Title: 一种用于生产富芳烃生物燃油的催化剂及其制备方法
Inventor: BO QUAN
IPC: C10G1/00
Filed: 2017-10-27
Abstract: 一种用于生产富芳烃生物燃油的催化剂及其制备方法，包括：微波热解木质素形成木质素生物炭原料。将称取好的锌盐溶于过量去离子水中，在搅拌时加入粉碎、洗涤、干燥后的生物炭粉末；将溶液在60℃水浴中利用磁力搅拌器连续搅拌6h；然后抽滤、成型，在105℃烘箱中烘干15h；接着在以氮气和氢气的混合气氛围（99:1）的管式炉中550℃结晶、成型，制成改性后的锌‑生物炭催化剂。改性后的催化剂能够提高木质素催化热解所得到生物油产率及芳烃的选择性，可应用于相关的催化热解转化技术中。
Patent WO-2018095295-A1 (WO)
Inventor: YANG WEIQING
IPC: H04L29/08
Filed: 2017-11-20
Abstract: La présente invention concerne un procédé, un appareil et un système pour l'interaction d'informations dans un service d'application. Dans la présente invention, un utilisateur peut effectuer une première opération sur un objet de carte dans un scénario de service, et une liste de signaux correspondante est affichée en fonction de la première opération. Une pluralité d'informations d'invite est prédéfinie dans la liste de signaux. En conséquence, l'utilisateur peut sélectionner des informations d'invite cibles à partir de la pluralité d'éléments d'informations d'invite, un client cible obtient un identifiant correspondant aux informations d'invite cibles et génère une première instruction de synchronisation en utilisant l'identifiant correspondant aux informations d'invite cibles, de façon à ordonner à un client ayant besoin d'effectuer une interaction d'afficher les informations d'invite cibles sur des objets de carte. De plus, les informations d'invite cibles sont un signal de communication négocié à l'avance parmi les clients. En conséquence, l'utilisateur peut envoyer de manière appropriée, au moyen d'un client cible, des informations à transférer à d'autres utilisateurs à des clients des autres utilisateurs, et une interaction d'informations entre les utilisateurs peut être grandement facilitée.
Patent WO-2019075840-A1 (WO)
Title: Identity verification method and apparatus, storage medium and computer device
Inventor: ZHENG JIA
IPC: G06K9/00
Filed: 2017-11-23
Abstract: An identity verification method. The method comprises: receiving an identity verification instruction; according to the identity verification instruction, acquiring multiple frames of target image through a photography apparatus; extracting a human facial area image and a certificate area image in each frame of target image; parsing the human facial area image in the multiple frames of target image to generate human facial change data; judging whether the human facial change data matches pre-set change data; and when the human facial change data matches the pre-set change data, verifying the corresponding certificate area image according to multiple human facial area images, and determining whether identity verification is passed according to a verification result.
Patent WO-2018103598-A1 (WO)
Title: 一种无内创微痛感医用针头喷砂专用线型喷砂嘴
Inventor: ZHANG JIANCHUN
IPC: B24C5/04
Filed: 2017-12-02
Abstract: 一种无内创微痛感医用针头喷砂专用线型喷砂嘴，在喷砂本体（1）上沿喷砂轴向至少设有一条线型喷砂孔（2），线型喷砂孔的出砂口（4）宽度为0.10～0.50毫米，线型喷砂孔的出砂口的长度为0.70～2.50毫米，喷砂本体为分体组合结构，分型面（5）通过线型喷砂孔，线型喷砂孔的长度边为直线或曲线或两者的组合，线型喷砂孔优选锥形孔结构。它能实现对针管内孔及针管壁体的精准磨削加工，将喷砂孔设计锥孔结构既利于砂流的喷出，不会产生砂粒的阻塞，在进砂压力相同条件下，进一步提高出砂口的喷砂压力，降低能耗，将喷砂孔设计成间隔分布的多条结构能成倍提高喷砂磨削效率，保证喷砂嘴相对于针头（8）的安装位置要求，能理想地满足针尖各处精准磨削的加工要求。
Patent WO-2019085145-A1 (WO)
Inventor: LU HAO
IPC: G06F17/50
Filed: 2017-12-07
Abstract: 一种超深井提升容器多失效模式的可靠性稳健设计方法。该方法包括以下步骤：1)定义提升容器结构参数、材料属性以及动载荷的随机性，采用试验设计方法求解随机参数下结构失效的随机响应；2)依据提升容器的失效准则建立各失效模式下的可靠性功能函数；3)考虑失效模式间的概率相关性，采用copula理论建立相关失效的联合概率模型；4)结合联合概率模型建立提升机容器失效相关的系统可靠性模型；5)建立提升容器系统可靠性关于各随机参数的灵敏度模型；6)结合优化设计模型建立以联合失效概率与参数灵敏度为约束的提升容器可靠性稳健优化设计模型。
Patent WO-2018103700-A1 (WO)
Title: 用于呼吸机的湿化装置以及呼吸机
Inventor: LIU LIJUN
IPC: A61M16/16
Filed: 2017-12-07
Abstract: 一种用于呼吸机的湿化装置（100，100'）以及呼吸机，湿化装置（100，100'）包括：底座（110），底座（110）具有电源连接器；液体容器（120，120'），液体容器（120，120'）能够放置在底座（110）上，液体容器（120，120'）具有进气口（121）和出气口（122），液体容器（120，120'）的底部包括由含铁元素材料制成的发热体；以及第一电磁感应加热器（131），第一电磁感应加热器（131）设置在底座（110）中，第一电磁感应加热器（131）包括第一电磁感应线圈（131a），第一电磁感应线圈（131a）的两端连接至电源连接器。湿化装置（100，100'）具有热转化率高、节能环保、节约成本等优点；此外，能够避免因高温区域外露而烫伤的风险，而且能够有效延长产品的寿命；另外，由于处于交变磁场的区域都属于加热区，因此可以实现加热无死角，使被加热物体均匀受热。
Patent WO-2019100493-A1 (WO)
Inventor: REN WEI
IPC: G02F1/13
Filed: 2017-12-20
Abstract: 一种配向膜的制备方法及制备装置，该制备方法包括：在基板(20)上形成配向材料层(21)（S101）；以第一速度(V1)移动基板(20)，使配向材料层(21)被光源发出的第一照射光(241)垂直照射(S102)；以第二速度(V2)移动基板(20)，使配向材料层(21)被光源发出的第二照射光(242)照射，其中，第二照射光(242)的入射方向与基板(20)具有第一夹角(a)，第一夹角(a)以使配向材料层(21)的入射光与配向材料层(21)的反射光不发生干涉现象(S103)。通过该制备方法，能够提升配向膜的配向能力的均一性。
Patent WO-2019029103-A1 (WO)
Title: Aging test device for pe pipe under fluctuating pressure and lifetime prediction method
Inventor: LI MAODONG
IPC: G01N3/36
Filed: 2017-12-27
Abstract: An aging test device for a PE pipe under a fluctuating pressure and an aging lifetime prediction method. For the aging test device, gas loading of an entire pipe (2) is provided by a pressure supply device, a gas pressure in the pipe (2) is regulated by the combined action of pressure sensors (4, 8), electric control valves (3, 9), and a central controller (10), a pressure injection and pressure relief process is repeated to form fatigue cyclic loading, and a test pipe section (7) is aged by an aging device. The aging test device changes the previous single-factor ageing research by combining various environmental stresses together to form a laboratory environment which simulates an actual working condition of an urban natural gas pipe. The aging lifetime prediction method is based on the aging test device. An aged pipe sample is taken out after a specific period to test mechanical properties and physical and chemical properties thereof, thereby obtaining related data for measuring any environmental temperature and any pipe aging property change. Compared with a previous method, the aging lifetime prediction method is simple, efficient, and low in cost.
Patent WO-2019127185-A1 (WO)
Inventor: GE JUNJIE
IPC: G01R27/26
Filed: 2017-12-28
Abstract: Embodiments of the present disclosure relates to a method and system for on-line condition monitoring of a direct current (DC) -link capacitor in a power converter. The method includes (a) detecting a first waveform of voltage at the DC-link capacitor generated when the power converter operates with an output voltage reference for a plurality of switching periods. The method also includes (b) determining, based on an estimated parameter related to condition monitoring of the DC-link capacitor, an estimated second waveform of voltage at the DC-link capacitor for at least one of the plurality of switching periods; and (c) determining a differential waveform between the first and second waveforms with respect to the at least one switching period of the step (b). In parallel to the step (a), the steps (b) and (c) are repeated by adjusting the estimated parameter step by step until the differential waveform approaches below a predetermined threshold. The method also includes (d) determining, based on the estimated parameter, a target parameter related to the condition monitoring of the DC-link capacitor.
Patent WO-2019127628-A1 (WO)
Title: 一种真空溅射设备及其真空大气交换装置
Inventor: HUANG QIUPING
IPC: C23C14/34
Filed: 2018-01-04
Abstract: 一种真空大气交换装置（1）及包含真空大气交换装置（1）的真空溅射设备，真空大气交换装置（1）中装设基板传送轨道，真空大气交换装置（1）中设有沿基板传送轨道的传送路径而设的用以对基板传送轨道上的成膜基板进行快速冷却的冷却装置（11），该真空大气交换装置（1）及真空溅射设备能够对沉积完成后的基板进行高效快速冷却，解决温度过高及不均匀导致的膜质问题。
Patent WO-2018133865-A1 (WO)
Title: Ask1抑制剂及其制备方法和应用
Inventor: WU CHENGDE
IPC: A61P35/00
Filed: 2018-01-22
Abstract: 涉及式（Ⅱ）所示化合物、其互变异构体或其药学上可接受的盐，并公开了其在制备治疗ASK1相关疾病药物中的应用。
Patent WO-2019015286-A1 (WO)
Title: Fan device and dishwasher
Inventor: HUANG HUAMING
IPC: A47L15/48
Filed: 2018-01-23
Abstract: A fan device (10) and a dishwasher (100). The dishwasher (100) comprises an inner liner (20), the inner liner (20) being provided with a washing chamber (21). The fan device (10) comprises a cover body (11), a fan (12), a humidity detection device (13) and a controller (14), the cover body (11) being provided with an air channel (111) which connects the washing chamber (21) and the outside, the fan (12) being used to establish an air flow through the air channel (111) so as to ventilate the washing chamber (21), the humidity detection device (13) being mounted on the cover body (11), the humidity detection device (13) comprising a humidity detecting element (131) fixed to a side wall (1131) of the air channel (111), the humidity detecting element (131) comprising a detecting end (132) located inside the air channel (111), the humidity detecting element (131) being used to detect the humidity in the air channel (111) by means of the detecting end (132), the controller (14) being electrically connected to the humidity detecting element (131) and the fan (12), and the controller (14) being used to control the operating state of the fan (12) according to the humidity. The controller (14) controls the fan (12) to operate according to the humidity in the air channel (111) to accelerate the air flow communication between the washing chamber (21) and the outside, so as to effectively reduce the steam content of the washing chamber (21), thereby avoiding the generation of odor, and the return of moisture to the washing chamber (21) of the dishwasher (100).
Patent WO-2019000938-A1 (WO)
Title: Apparatus and method for controlling sound playback, and related system
Inventor: LI WENBO
IPC: H04R1/10
Filed: 2018-01-30
Abstract: The present invention relates to an apparatus and method for controlling sound playback, and a related system. The apparatus comprises a brain wave detection unit, a selection unit, and a switching unit. The brain wave detection unit is used for detecting brain wave information of a user. The selection unit is used for selecting a sound player to be used from a first sound player and a second sound player according to the brain wave information. The switching unit is used for sending a switching control signal according to the selection result so that the selected sound player plays back sound. A sound player is selectively turned on on the basis of brain wave information of a user, so that the sound playback mode is adapted to the personal status or expectation of the user.
Patent WO-2018171342-A1 (WO)
Title: 一种高散热性led防爆灯
Inventor: LIU HONGCHAO
IPC: F21V25/12
Filed: 2018-02-02
Abstract: 一种高散热性LED防爆灯，包括圆台型中空结构的壳体以及设置在壳体侧面上的散热部件；该壳体包括上端面（5）和下端面（7），上端面（5）和下端面（7）之间连接有连接筒；该上端面（5）、下端面（7）和连接筒一体压铸成型；该散热部件包括若干个挤压成型的散热翅片（8），散热翅片（8）安装在连接筒的外侧面上；该上端面（5）、下端面（7）和连接筒的内部设置有由金属材料制成的防爆网层；该壳体是由不透明材料制成的壳体，连接筒的内部为空腔设计，用以容置发光光源。该高散热性LED防爆灯设计合理，兼具防爆和散热要求，能够保证LED灯具在危险环境下工作，同时具有良好的散热效果，保证灯具的使用寿命，适于推广。
Patent WO-2018145612-A1 (WO)
Title: 电荷泵电路和锁相环
Inventor: DING QING
IPC: H03L7/089
Filed: 2018-02-05
Abstract: 一种电荷泵电路和锁相环，该电路包括依次电连接的启动模块（10）、偏置模块（20）、电流镜模块（30）、充放电反馈控制模块（40）和充放电匹配模块（50）。启动模块（10）用于启动偏置模块（20）。偏置模块（20）用于产生恒定的偏置电流并输出至电流镜模块（30）。电流镜模块（30）用于接收偏置电流，并对偏置电流进行放大分两路输出。充放电反馈控制模块（40），用于检测电荷泵的输出电压并根据输出电压反馈控制充放电匹配模块（50）中的充电电流或放电电流，抑制充电电流与放电电流的失配。充放电匹配模块（50）用于接收外部充电控制信号或放电控制信号，对电荷泵的输出负载充电或放电。上述电荷泵电路无需运算放大器，就能在较宽输出电压范围内保持充电电流和放电电流的匹配，电路结构简单且能工作在较高的频率。
Patent WO-2019056693-A1 (WO)
Title: Interface proxying method and application server
Inventor: ZHOU YI
IPC: H04L29/08
Filed: 2018-02-10
Abstract: Disclosed in the present application is an interface proxying method, the method comprising: sending an interface registry command to an interface service registration center, the interface service registration center establishing an interface registry according to the interface registry command; receiving a registry updating request sent by the interface service registration center, the registry updating request being generated according to an interface registration request sent by the interface service registration center; and sending a registry updating command to the interface service registration center according to the registry updating request, and the interface service registration center updating the interface registry according to the registry updating command and the interface registration request. Further provided in the present application is an application server. By means of the application server and the interface proxying method provided in the present application, interface information may be queried and traverse, and basic information of an interface may be maintained in a registry during registration, thus achieving good interface management, and facilitating interface permission control.
Patent WO-2018210033-A1 (WO)
Inventor: OU JUNBIAO
IPC: A24F40/40
Filed: 2018-03-06
Abstract: Provided are an atomizer wick and an atomizer having the same. The atomizer wick comprises a cartridge holder (11), a plurality of cartridges (12), a positive electrode (13), and a positive electrode insulation ring (14). The cartridge holder (11) has a cartridge hole (111) formed at the bottom thereof and an air guiding hole (112) formed at an upper end thereof corresponding to the cartridge hole (111). The cartridge (12) is inserted upwardly into the cartridge hole (111) from the bottom of the cartridge holder (11). A top end of the cartridge (12) is received in the air guiding hole (112). The positive electrode (13), the positive electrode insulation ring (14) and a lower end of the cartridge holder (11) are threadedly connected in a sequential order. An upper section and a lower end of the cartridge (12) are in contact with and electrically connected with the cartridge holder (11) and the positive electrode (13) sequentially and respectively. In the atomizer having the above atomizer wick, the atomizer wick is provided inside a glass tube (5). A liquid feeding ring (4) and a base (6) are provided at an upper end and a lower end of the glass tube (5), and are threadedly connected to the upper end and the lower end of the cartridge holder (11), respectively. An upper end and a lower end of an upper cover (3) are respectively provided with a mouthpiece (2) and the liquid feeding ring (4). A lower end of the atomizer wick is in contact with and electrically connected with an electrode column (61) at the base by means of the positive electrode (13).
Patent WO-2019076019-A1 (WO)
Title: Method and device for electronic signature
Inventor: ROSCOE ANDREW WILLIAM
IPC: H04L9/08
Filed: 2018-04-23
Abstract: Disclosed are a method and device for electronic signature. The method for electronic signature comprises: hashing a first key created for a user and a user identifier of the user; generating a key certificate of the first key on the basis of obtained hash values, the user identifier, and a current key; placing the key certificate on a public media, wherein the public media can ensure that information published thereon cannot be tampered; signing on a file by using the first key and placing an obtained file signature and the file on the public media; and placing the first key on the public media after the file is present on the public media. By using the technical solution of the present disclosure, a key can be effectively used.
Patent WO-2018201925-A1 (WO)
Title: 信息处理的方法、装置和通信设备
Inventor: MAZURENKO IVAN LEONIDOVICH
IPC: H03M13/11
Filed: 2018-04-23
Abstract: 本申请公开了编码方法，装置、通信设备和通信系统。该方法包括：使用低密度奇偶校验LDPC矩阵对所述信息比特序列进行编码；其中，所述LDPC矩阵的基图表示为m行n列的矩阵，m为大于或者等于5的整数，n为大于或者等于16的整数；所述基图包括子矩阵A和子矩阵B，其中，所述子矩阵A为矩阵A0或者所述子矩阵A包括矩阵A0中的前16列，所述矩阵A0为5行22列的矩阵；所述子矩阵B为5行5列的矩阵，所述子矩阵B包括一权重为3的列和双对角结构的子矩阵B'。本申请的编码方法、装置、通信设备和通信系统，能够支持多种长度的信息比特序列的编码需求。
Patent WO-2018210107-A1 (WO)
Title: 一种基于Wi-Fi物联网设备网络的定位方法和系统
Inventor: ZHAN RUI
IPC: H04W4/02
Filed: 2018-04-24
Abstract: 本发明涉及基于Wi-Fi物联网设备网络的定位方法及系统，子网中的定位监控节点各自在信息收发范围内对同一个待定位目标设备所发送的数据包进行接收，记录对应的数据包接收时钟信息，并将所述数据包接收时钟信息及待定位目标设备的识别信息提供给子网主节点；所述子网主节点利用多个定位监控节点接收同一个待定位目标设备的数据包的信号到达时间差，及定位监控节点相互的物理距离，计算待定位目标设备相对多个定位监控节点的距离差，并确定待定位目标设备在子网物理覆盖范围中的位置。本发明实现了大物理范围、大目标数量的实时定位监控。
Patent WO-2019095633-A1 (WO)
Title: 农业工单管理方法及系统、计算机装置及可读存储介质
Inventor: LU JI
IPC: G06Q10/06
Filed: 2018-04-25
Abstract: 本发明实施例公开了一种农业工单管理方法及系统、计算机装置及可读存储介质，用于对工作人员的种植过程进行监督，有利于提高种植过程的正确率、标准程度。本发明实施例方法包括：确定种植园区内作物的生产环节；根据生产环节对应的作物的位置信息为生产环节配置工位的坐标信息；根据生产环节和工位的坐标信息为工作人员制定并输出工单，工单包括生产环节、工位的坐标信息以及工位对应的作业时间；获取工作人员的定位信息；根据定位信息和工单对工作人员的作业过程进行监控。
Patent WO-2019184052-A1 (WO)
Inventor: YANG ZONGKAI
IPC: G06F17/30
Filed: 2018-05-08
Abstract: A map-based method for analyzing educational big data, comprising: acquiring educational resource data and storing same into a database according to a certain data structure; constructing a theme map layer for each analysis theme, classifying and indexing data according to an analysis theme, loading the data to a corresponding theme map layer, and superimposing the theme map layer onto a base map to form a data map; analyzing data of the theme map layer according to the analysis theme and acquiring a theme analysis result; extracting data of multiple theme map layers in a target region, fusing the data and acquiring a region analysis result; acquiring learning preferences of users; and combining the learning preferences of the users according to the content of user requests and searching the region analysis result so as to respond to the user requests. By means of educational data being classified and analyzed according to different theme requirements, the present method may solve part of the problems of current educational data being disorderly and of the relative deficiency of accurate analysis, and educational data may thus be utilized and analyzed.
Patent WO-2019128041-A1 (WO)
Inventor: ZHOU RONG
IPC: E03D9/00
Filed: 2018-05-15
Abstract: An intelligent heating and germicidal device employing a gas-liquid mixture for a toilet comprises: a sleeve tube (10), one end thereof being provided with an ultraviolet germicidal unit (50) used to irradiate a liquid in the sleeve tube (10) with germicidal radiation; a heating rod (40) having one end inserted into a hollow cavity of the sleeve tube (10) and the other end extending out of the hollow cavity to seal the other end of the sleeve tube (10), a liquid inlet channel (42) formed therein and extending therethrough; and a three-way unit (71), an air inlet port (712) of the three-way unit (71) being connected to an external gas source unit by means of a pipe, a liquid inlet port (711) and the air inlet port (712) of the three-way unit (71) being in communication with a discharge port (713) of the three-way unit (71). The device has a simple structure and good heating performance, can realize cleaning with a gas-liquid mixture, and can use ultraviolet light to perform disinfection on a liquid in the sleeve tube.
Patent WO-2018219228-A1 (WO)
Inventor: LI SHAOHUA
IPC: H04W72/04
Filed: 2018-05-25
Abstract: Selon des modes de réalisation, l'invention concerne globalement la configuration de ressources. Un dispositif réseau configure, sur la base d'un mode d'accès d'un dispositif terminal, un motif de transmission d'informations pour le dispositif terminal à partir d'un premier ensemble de ressources associé à un mode MOMA et d'un second ensemble de ressources associé à un mode NOMA.
Patent WO-2019227326-A1 (WO)
Title: Electromagnetic wave collimation structure
Inventor: GONG GUOHUA
IPC: G02B27/30
Filed: 2018-05-30
Abstract: An electromagnetic wave collimation structure, which is used for the transmission of electromagnetic waves in the range of the visible light frequency band, comprising: a structure main body (100), the structure main body (100) comprising an incident plane (110) facing the irradiation direction of electromagnetic waves and an emergent plane (120) opposite to the incident plane (110), wherein the incident plane (110) and the emergent plane (120) are both metal planes used for preventing the transmission of electromagnetic waves; a through hole (130) that passes through the structure main body (100), wherein the radius of the through hole (130) is less than or equal to the half wavelength of the electromagnetic waves, and the depth of the through hole (130) is less than or equal to the wavelength of the electromagnetic waves; multiple concentric annular grooves (111) on the structure main body (100) which use the through hole (130) as a center and which are periodically arranged by using a position at a distance of L from the center of the through hole (130) as the starting point. The electromagnetic wave collimation structure has simple processing and costs are low.
Patent WO-2019196181-A1 (WO)
Title: Aluminum oxide short fiber-reinforced magnesium oxide-based foam ceramic filter and preparation method therefor
Inventor: LIU ZILI
IPC: C04B38/06
Filed: 2018-06-01
Abstract: An aluminum oxide short fiber-reinforced magnesium oxide-based foam ceramic filter, which is obtained by coating a light-burned magnesium oxide-based ceramic slurry containing aluminum oxide short fiber and nano titanium oxide on a polyurethane foam carrier, and drying and sintering same. The preparation method for the foam ceramic filter comprises the following steps: (1) according to mass percentage, mixing 15%-25% of nano alumina sol and 0.8%-1.5% of a rheological agent, the rest being magnesium oxide ceramic powder containing aluminum oxide short fiber and nano titanium oxide, adding anhydrous ethanol, mixing well by means of ball milling, and then preparing a ceramic slurry having a solid content of 60%-70%; (2) immersing a polyurethane foamed plastic template into the ceramic slurry, pressing the polyurethane foamed plastic template by means of a rolling machine to remove excess immersion slurry, then preparing a biscuit, next removing the ethanol solvent in a ventilating chamber at 40°C-50°C to dry the biscuit; (3) placing the dried biscuit in a sintering furnace, raising the temperature to 1350°C-1550°C for high-temperature sintering, and cooling to room temperature in the furnace to obtain a magnesium oxide-based foam ceramic filter.