摘要：【中文】本发明涉及全无机钙钛矿太阳电池技术领域，尤其涉及功能性聚合物在全无机钙钛矿太阳电池中的应用及制备方法和全无机钙钛矿太阳电池。所述功能性聚合物能够抑制钙钛矿晶体缺陷并增加薄膜的疏水性，起到提高电池效率与湿度稳定性的作用。根据实施例的记载，将功能性聚合物应用到全无机钙钛矿电池后得到的电池光电转换效率≥14.01％，所述含功能性聚合物的全无机钙钛矿光吸收层与水产生的接触角均大于未应用功能性聚合物的全无机钙钛矿光吸收层与水产生的接触角，提高了含功能性聚合物的全无机钙钛矿光吸收层的疏水性，进而改善全无机钙钛矿电池的稳定性。 【EN】The invention relates to the technical field of all-inorganic perovskite solar cells, in particular to an application and a preparation method of a functional polymer in an all-inorganic perovskite solar cell and an all-inorganic perovskite solar cell. The functional polymer can inhibit perovskite crystal defects and increase the hydrophobicity of the film, and plays a role in improving the efficiency and humidity stability of the battery. According to the description of the embodiment, the photoelectric conversion efficiency of the cell obtained after the functional polymer is applied to the all-inorganic perovskite cell is not less than 14.01%, the contact angle between the all-inorganic perovskite light absorption layer containing the functional polymer and water is larger than the contact angle between the all-inorganic perovskite light absorption layer without the functional polymer and water, the hydrophobicity of the all-inorganic perovskite light absorption layer containing the functional polymer is improved, and the stability of the all-inorganic perovskite cell is further improved.

摘要：【中文】本发明公开了一种虾蟹壳制备肉类保鲜膜的方法，其解决现有壳聚糖保鲜膜存在保鲜效果不理想的问题。其包括以下步骤：（1）原料预处理：S1、甲壳素纳米颗粒制备；S2、无花果乳液制备；（2）混料；（3）脱气；（4）制膜。具体地，本发明将虾蟹壳通过水热处理，改性虾蟹壳中甲壳素，水热修饰氨基，利用超声波将甲壳素外的杂质剥离，与聚磷酸盐的交联制备甲壳素抗菌纳米离子，结合无花果乳液，联合醋酸和甘油，经均质化交联反应，利用薄膜吹塑或膜液流延技术制成薄膜，干燥获得产品。本发明材料均采自天然原料，制得的肉类保鲜膜安全、绿色，其包装性能优良，自身的抗菌性良好，有效保证抗菌效果和货架期。 【EN】The invention discloses a method for preparing a meat preservative film by using shrimp and crab shells, which solves the problem that the existing chitosan preservative film has an unsatisfactory preservative effect. Which comprises the following steps: (1) pretreatment of raw materials: s1, preparing chitin nano particles; s2, preparing fig emulsion; (2) mixing materials; (3) degassing; (4) and (5) film preparation. Specifically, the method comprises the steps of carrying out hydrothermal treatment on shrimp and crab shells, modifying chitin in the shrimp and crab shells, carrying out hydrothermal modification on amino, stripping impurities outside the chitin by using ultrasonic waves, preparing chitin antibacterial nano ions by crosslinking with polyphosphate, combining fig emulsion with acetic acid and glycerol, carrying out a homogenizing crosslinking reaction, preparing a film by using a film blowing or film liquid casting technology, and drying to obtain a product. The materials are all selected from natural raw materials, and the prepared meat preservative film is safe and green, has excellent packaging performance and good antibacterial property, and effectively ensures the antibacterial effect and shelf life.

摘要：【中文】本发明公开了一种变轨距转向架及其变轨距方法，所述转向架包括构架，轮轴组装，两个轴箱；所述轮轴组装的中部安装有齿轮毂和锁紧装置，所述锁紧装置位于车轴中部；所述轴箱底部设有一个轴箱横向限位面和一个轴箱垂向承载面；所述轮轴组装包括车轴，装在车轴上的一个主动车轮组成和一个从动车轮组成；所述主动车轮组成包括主动车轮和主动轴套；所述从动车轮组成包括从动轴套和从动车轮；所述主动轴套与从动轴套交叉配合，且装有锁紧装置。本发明可以实现左右车轮同时完成变轨。 【EN】The invention discloses a track pitch changing bogie and a track pitch changing method thereof, wherein the bogie comprises a framework, an axle assembly and two axle boxes; the middle part of the wheel shaft assembly is provided with a gear hub and a locking device, and the locking device is positioned in the middle of the axle; the bottom of the axle box is provided with an axle box transverse limiting surface and an axle box vertical bearing surface; the wheel shaft assembly comprises an axle, a driving wheel assembly and a driven wheel assembly, wherein the driving wheel assembly and the driven wheel assembly are arranged on the axle; the driving wheel assembly comprises a driving wheel and a driving shaft sleeve; the driven wheel assembly comprises a driven shaft sleeve and a driven wheel; the driving shaft sleeve and the driven shaft sleeve are in cross fit and are provided with locking devices. The invention can realize that the left wheel and the right wheel can simultaneously complete track transfer.