polymer

摘要： At present,methods for treating tertiary oil recovery wastewater via electro-coagulation are still in their early stage of development.In this study,a device for electro-coagulation wastewater treatment was built and tested in an oil field.The effects that the initial pH value,electrode type,and connection mode have on the coagulation and separation effect were assessed by measuring the mass fraction and turbidity of oil.The results have shown that when the electro-coagulation method is used,the effectiveness of the treatment can be significantly increased in neutral pH conditions(pH=7),in acidic conditions,and in alkaline conditions.Compared to an Al electrode,the floc that is produced by an Fe electrode is smaller;thus,it does not easily coagulate and settle in a short time.Using the oil removal rate,turbidity removal rate and energy consumption as a basis to assess the performances,the results have demonstrated that the combined aluminum alloy iron composite electrode should be used as electrolytic electrode.

摘要： The development of low-bandgap nonfullerene acceptors and wide-bandgap polymer donors speeds up the advance of organic solar cells(OSCs)[1-17]. Wide-bandgap copolymers based on fused-ring acceptor units are ideal donor materials due to their low-lying HOMO levels, high hole mobilities and complementary light absorption to nonfullerene acceptors[18-25]. Currently, high-performance donors with 18%power conversion efficiencies(PCEs) belong to this type.

摘要： Habitual tea consumption can reduce the risk of ASCVD morbidity and mortality and all-cause mortality in China,and long-term adherence to this habit can provide greater protection.Pu-erh tea is one of the representatives of post-fermented teas,and the polymers in Pu-erh tea have anti-cancer and anti-hyperlipidemic activities,but their chemical composition is still unknown.In this study,the chemical composition of Pu-erh tea was investigated in detail and eight(1–8)known compounds were isolated.The polymers in Pu-erh tea were also degraded by thiol degradation,and the fragments of quercetin and(–)-epicatechin-3-O-gallate were found in the thiol degradation products of Pu-erh tea polymers by UPLC observation and separation and purification.This is the first time that this fragment was obtained in Pu-erh tea polymer.

摘要： Organic solar cells(OSCs)as a promising photovoltaic tech-nology have attracted great attention due to its unique advant-ages,such as solution processing,low cost,lightweight and ex-cellent mechanical flexibility[1−5].Conventional OSCs always employ fullerene derivatives,e.g.

摘要： A new device is designed to promote the mixing of high-pressure water jets and powders in typical industrial applications.The water and powder mixing devices traditionally used on offshore platforms are detrimentally affected by the geometrical configuration of the water nozzle and the powder spraying pipe,which are parallel,resulting in small intersecting volumes of liquid and powder.By allowing the related jets to intersect,in the present work the optimal horizontal distance,vertical distance and intersection angle are determined through a parametric investigation.It is also shown that such values change if the number of water layers is increased from one to two.In such a case,the water and powder intersection volume can be greatly increased because the trajectory of the dry powder particles becomes more chaotic.

摘要： Core decompression(CD)with the elimination of osteonecrotic bone is the most common strategy for treating early-stage nontraumatic osteonecrosis of the femoral head(ONFH).Adjuvant treatments are widely used in combination with CD as suitable methods of therapy.Existing augmentations have to be fabricated in advance.Here,we report a novel injectable glycerin-modified polycaprolactone(GPCL)that can adapt to the shape of the CD cavity.GPCL shows great flowability at 52.6°C.After solidification,its compressive modulus was 120 kPa at body temperature(37°C).This excellent characteristic enables the polymer to provide mechanical support in vivo.In addition,GPCL acts as a carrier of the therapeutic agent zoledronic acid(ZA),demonstrating sustained release into the CD region.ZA-loaded GPCL was injected into ONFH lesions to treat early-stage nontraumatic cases.Compared to that in the CD group,CD+ZA-loaded GPCL injection preserved bone density and increased the collagen level in the femoral head.At the interface between the GPCL and CD tunnel wall,osteogenesis was significantly promoted.In addition,morphological evaluations revealed that the femoral heads in the CD+ZA-GPCL group exhibited improved pressure resistance.These results suggest a strategy effective to preserve the bone density of the femoral head,thus decreasing the possibility of femoral head collapse.This novel injectable polymer has,therefore,considerable potential in clinical applications.

摘要： Acrylic acid(AA)is an important and widely used industrial chemical,but its high toxicity renders its use incompatible with the concept of green development.By leveraging its terminal carboxyl group and unsaturated bond,we designed and explored a new strategy to increase the greenness of AA via its eutectic melting using a quaternary ammonium salt(choline chloride)to form a deep eutectic solvent(DES),followed by polymerisation of the DES to form a polymer(poly(DES)).The greenness of AA,DES,and poly(DES)was evaluated via an in vitro test using MGC80-3 cells and an in vivo test using Kunming mice.The toxicity improved from Grade 2(moderately toxic)for AA to Grade 1(slightly toxic)for DESs and Grade 0(non-toxic)for poly(DES)in the in vitro test.Moreover,the poly(DES)s showed a lower toxicity in mice than the DESs in the in vivo test.Thus,greenness enhancement was successfully achieved,with the greenness following the order AA

摘要： In order to obtain a multifunctional oilfield agent with both corrosion inhibition and oil displacement functions,a polymer with benzene ring structures is synthesized based on polyacrylamide(PAM)and used as inhibitor for the first time.Methods including electrochemistry,weight loss and theoretical calculations are used to study the inhibition effect for P110 steel in 1.0 M HCl.The experimental results show that the modified polymer poly-(Z)-N-benzylidenepropionamide(PBAM)has excellent inhibition effects,and the maximum efficiency can reach 90.62%in impedance spectroscopy tests.The benzene ring structure added in the modified polymer providesπelectrons for the adsorption of inhibitor on metal surface,strengthens the adsorption,and thus brings a better corrosion inhibition effect.In addition to the corrosion inhibition performance,the viscosity-increasing effect of PBAM is evaluated.The results show that the addition of benzene ring not only enhances the corrosion inhibition effect,but also brings temperature resistance to the polymer.However,the salt tolerance of the polymer is affected,the synthesized PBAM which viscosity can above 500 m Pa s at 140°C is suitable for high temperature and low salinity environment.The modified polyacrylamide has satisfactory corrosion inhibition and oil displacement performance,which provides a new idea for the development of oilfield chemistry.

摘要： Polymer semiconductors have aroused interests from both academic and industry due to their wide applications in electronic devices,such as organic thin-film transistors(OT-FTs)[1],polymer solar cells(PSCs)[2−6],organic thermoelectrics(OTEs)[7−11],and perovskite solar cells(PVSCs)[12−14].To date,great efforts have been devoted to developing p-type poly-mer semiconductors,while the development of n-type poly-mers lags far behind.In fact,n-type polymers are essential for organic electronic devices.

摘要： Organic solar cell(OSC)is a promising photovoltaic technology with great commercialization potential due to the advantages like solution-processing,roll-to-roll fabrication,lightweight,flexibility,and semitransparency[1−7].Conjugated polymer donors are key materials for OSCs[8].

摘要： Polymers are used widely in all sectors of modem societydue to their inherent high perfomumce properties such as lightweight and corrosion resistance. Southern China has become aworld hub of manufacturing. This is particularly true for polymer processing. However，the polymer processing industries in China face problems of low energy-efficiency and relatively low productive.These problems may be attributedto the lack of innovations，particularly in process and systemlevel. With the above background，Center for Polymer Processing and Systems (CPPS)of f-IICUST Fok Ying TongGraduate School is established with the mission to work withthe industries to meet the challenges and to solve theseproblems educating and training research engineers and leaders of the industries.

摘要： 本发明公开了一种基于原位生长的Polymer‑COF‑MOF复合膜及其制备方法，该Polymer‑COF‑MOF复合膜具有层叠的多层膜结构，首先由COF配体和线性Polymer共聚形成聚合物共价有机骨架(Poly‑COF)，然后将聚合物共价有机骨架放置于金属中心离子前驱液中，加入带氨基的有机配体溶液后搅拌均匀，反应制得Polymer‑COF‑MOF复合膜；MOF膜层的形成过程中，该MOF膜层的金属中心离子通过与有机配体形成配位键，同时有机配体上的氨基与Poly‑COF膜层的羧基或者残存的醛基发生反应，实现MOF膜层在COF膜层上的原位生长；本发明提供的Polymer‑COF‑MOF多层复合膜中，Polymer、COF膜层之间通过共价键实现化学键合；MOF、COF膜层之间通过羧酸(或醛基)和氨基反应生成的酰胺键(或席夫碱)实现连接，结构稳定、机械强度更高。

摘要： 本发明提供了化合物DA‑I2959，结构如式(1)所示，聚合物DA‑Polymer，结构如式(2)所示，及所述化合物DA‑I2959、所述聚合物DA‑Polymer的制备方法。本发明还提供了一种所述的聚合物DA‑Polymer或者所述的制备方法得到的聚合物DA‑Polymer的使用方法。本发明进一步提供了一种油润滑材料。

摘要： 本发明公开了一种基于新型的Polymer‑COF‑rGO复合膜及其制备方法，首先由COF单体和线性Polymer制备含有聚合物的COF单体，然后将上述COF单体和另一种含有氨基的COF单体以及氧化石墨烯(GO)混合研磨，加入DMF和乙酸后加热反应，形成新的Polymer‑COF‑rGO复合膜。合成反应中两种COF单体形成COF材料，添加的氧化石墨烯(GO)在DMF溶液中原位还原，在加热条件下同时和COF材料中的氨基形成共价键连接在rGO和COF之间，实现rGO(还原氧化石墨烯)膜层在COF膜层上的原位生长。由于Polymer和COF膜层之间、COF和rGO膜层之间均是通过共价键实现连接，不仅有效将这两种类型的2D材料紧密结合在一起，而且还起到了“桥梁”的作用，改善COF光生电荷的分离以及光生电子向rGO的迁移。

摘要： 本发明公开了一种基于原位生长的Polymer‑COF‑MOF复合膜及其制备方法，该Polymer‑COF‑MOF复合膜具有层叠的多层膜结构，首先由COF配体和线性Polymer共聚形成聚合物共价有机骨架(Poly‑COF)，然后将聚合物共价有机骨架放置于金属中心离子前驱液中，加入带氨基的有机配体溶液后搅拌均匀，反应制得Polymer‑COF‑MOF复合膜；MOF膜层的形成过程中，该MOF膜层的金属中心离子通过与有机配体形成配位键，同时有机配体上的氨基与Poly‑COF膜层的羧基或者残存的醛基发生反应，实现MOF膜层在COF膜层上的原位生长；本发明提供的Polymer‑COF‑MOF多层复合膜中，Polymer、COF膜层之间通过共价键实现化学键合；MOF、COF膜层之间通过羧酸(或醛基)和氨基反应生成的酰胺键(或席夫碱)实现连接，结构稳定、机械强度更高。

摘要： 本发明提供了化合物DA‑I2959，结构如式(1)所示，聚合物DA‑Polymer，结构如式(2)所示，及所述化合物DA‑I2959、所述聚合物DA‑Polymer的制备方法。本发明还提供了一种所述的聚合物DA‑Polymer或者所述的制备方法得到的聚合物DA‑Polymer的使用方法。本发明进一步提供了一种油润滑材料。

摘要： 本发明涉及一种不锈钢毛细管和Polymer增敏结构的高频FBG加速度传感器及其使用方法，属于光电子测量技术领域。本发明包括聚四氟乙烯固定外壳、不锈钢毛细管、光纤Bragg光栅、导出光纤、弹性金属薄片；所述不锈钢毛细管外侧两边固定于聚四氟乙烯固定外壳空心圆筒中，把光纤Bragg光栅预拉伸后粘贴在弹性金属薄片上，粘贴有光纤Bragg光栅的弹性金属薄片放入不锈钢毛细管中央，导出光纤从不锈钢毛细管两边引出。本发明能够在较高的振动频率的基础上实现高灵敏度测量；本设计能够实现微小直径封装，可以适用于安装空间较小的测量对象中进行振动监测；通过采用光纤Bragg光栅，具有较强的抗电磁干扰能力和耐腐蚀能力适用于对变压器的长期监测；结构简单，便于操作。

摘要： 本实用新型公开了一种多功能新能源汽车储能电池Polymer电芯支架，包括支架本体，所述支架本体上设有与Polymer电芯外形结构相匹配的电芯深浅放置槽；所述支架本体的左右两侧分别设有定位孔柱；所述支架本体的前后两侧分别设有一个以上的喇叭散热槽；所述电芯深浅放置槽上设有预留膨胀槽孔。本实用新型结构简单，功能易行，增强Polymer电芯堆叠牢固，安全可靠整体结构。

摘要： 本实用新型涉及一种不锈钢毛细管和Polymer增敏结构的高频FBG加速度传感器，属于光电子测量技术领域。本实用新型包括聚四氟乙烯固定外壳、不锈钢毛细管、光纤Bragg光栅、导出光纤、弹性金属薄片；所述不锈钢毛细管外侧两边固定于聚四氟乙烯固定外壳空心圆筒中，把光纤Bragg光栅预拉伸后粘贴在弹性金属薄片上，粘贴有光纤Bragg光栅的弹性金属薄片放入不锈钢毛细管中央，导出光纤从不锈钢毛细管两边引出。本实用新型能够在较高的振动频率的基础上实现高灵敏度测量；本设计能够实现微小直径封装，可以适用于安装空间较小的测量对象中进行振动监测；通过采用光纤Bragg光栅，具有较强的抗电磁干扰能力和耐腐蚀能力适用于对变压器的长期监测；结构简单，便于操作。