Flame-retardant ammonium polyphosphate/MXene decorated carbon foam materials as polysulfide traps for fire-safe and stable lithium-sulfur batteries

Lithium-sulfur(Li-S)batteries are one of the most promising modern-day energy supply systems because of their high theoretical energy density and low cost.However,the development of high-energy density Li-S batteries with high loading of flammable sulfur faces the challenges of electrochemical performance degradation owing to the shuttle effect and safety issues related to fire or explosion accidents.In this work,we report a three-dimensional(3D)conductive nitrogen-doped carbon foam supported electrostatic self-assembled MXene-ammonium polyphosphate(NCF-MXene-APP)layer as a heat-resistant,thermally-insulated,flame-retardant,and freestanding host for Li-S batteries with a facile and costeffective synthesis method.Consequently,through the use of NCF-MXene-APP hosts that strongly anchor polysulfides,the Li-S batteries demonstrate outstanding electrochemical properties,including a high initial discharge capacity of 1191.6 mA h g^(-1),excellent rate capacity of 755.0 mA h g^(-1)at 1 C,and long-term cycling stability with an extremely low-capacity decay rate of 0.12%per cycle at 2 C.More importantly,these batteries can continue to operate reliably under high temperature or flame attack conditions.Thus,this study provides valuable insights into the design of safe high-performance Li-S batteries.

Solid-liquid phase equilibrium for the system ammonium polyphosphate-urea ammonium nitrate-potassium chloride-water at 273.2 K

Based on the dynamic method,a quaternary system of ammonium polyphosphate (APP)-urea ammonium nitrate (UAN,CO(NH_(2))_(2)-NH_(4)NO_(3))-potassium chloride (KCl)-H_(2)O and its subsystems (APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O,KCl-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O and APP-KCl-H_(2)O) were systematically investigated at the temperature of 273.2 K.Each ternary phase diagram contains one invariant point and three crystallization regions.The crystallization regions are:(1)(NH_(4))_(3)HP_(2)O_(7),(NH_(4))_(4)P_(2)O_(7)and ((NH_(4))_(3)HP_(2)O_(7)+(NH_(4))_(4)P_(2)O_(7)) for APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O diagram;(2) KCl,KNO_(3)and(KCl+KNO_(3)) for KCl-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O diagram and (3)(NH_(4))_(3)HP_(2)O_(7),KCl and((NH_(4))_(3)HP_(2)O_(7)+KCl) for APP-KCl-H_(2)O diagram.The quaternary phase diagram of APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-KCl-H_(2)O has no quaternary invariant point but includes four solid phase crystallization regions,i.e.,(NH_(4))_(3)HP_(2)O_(7),(NH_(4))_(4)P_(2)O_(7),KNO_(3)and KCl,in which the KNO_(3)region occupies the largest area.The maximum total nutrient content (N+P_(2)O_(5)+K_(2)O) existing as ionic forms in the APP-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O,KCl-[CO(NH_(2))_(2)-NH_(4)NO_(3)]-H_(2)O,APP-KCl-H_(2)O and quaternary systems is 44.70%,32.86%,45.56%and 46.23%(mass),respectively,indicating that the maximum nutrient content can be reached using raw materials of the corresponding systems to prepare liquid fertilizer.In the quaternary system,the content of NH_(4)~+-N ascends with the increase of the total nutrient content,while the contents of NO_(3)^(-)-N and CO(NH_(2))_(2)-N increase with elevated total N.This work can help optimize the operating parameters for the production,storage and transportation of liquid fertilizers.

Microencapsulated ammonium polyphosphate by polyurethane with segment of dipentaerythritol and its application in flame retardant polypropylene

Dipentaerythritol(DPER),4,40-diphenylmethanediisocyanate(MDI)and melamine(MEL)are used as raw materials to microencapsulate ammonium polyphosphate(MAPP)in situ polymerization.The MAPP is characterized by Fourier transform infrared(FT-IR),scanning electron microscopy(SEM),transmission electron microscopy(TEM)and thermal gravimetric analysis(TGA).The results show that the coating operation can effectively improve water resistance of ammonium polyphosphate(APP),and MAPP has higher residual rate than that of APP after combustion.The flame retardant action of MAPP and APP in polypropylene(PP)is investigated by the limited oxygen index(LOI),vertical burning test(UL-94),TGA,SEM,and cone calorimeter test(CCT).The LOI value of the PP/MAPP composite at the same loading is higher than that of PP/APP composite.UL 94 ratings of PP/MAPP composites are raised to V-0 at 20 wt%loading.The results of CCT also show that MAPP is more efficient than APP.The morphological structures observed by digital photos and SEM demonstrated that MAPP could be promoted to form the continuous and compact intumescent char layer.The flame retardant mechanism of PP/MAPP is also discussed.

Study of Crystal Defects and Spectroscopy Characteristics of Ammonium Polyphosphate

Two kinds of commercial ammonium polyphosphate （APP） and three kinds of APP which were prepared in the laboratory were studied by X-ray diffraction （XRD）, Fourier transforms infrared spectroscopy （FTIR）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. In identification of the form Ⅱ crystal APP by XRD and FTIR, some discrepancies were discussed. It is pointed out that the absorbance of the FTIR spectra at 682 cm^-1 can exist not only in the form Ⅰ APP, but also in the form Ⅱ APP with the crystal lattice defects. The SEM images indicate that the form Ⅱ APP is of multilayer crystal structure. XRD and TEM can reveal the crystal lattice defects.

Infl uencing Mechanism and Interaction of Muscovite on Thermal Decomposition of Ammonium Polyphosphate

The interaction mechanism and phase evolution of ammonium polyphosphate（APP）mixed with muscovite（APP/muscovite）were studied by TG,XRD and SEM,respectively,during heating.When the temperature is not higher than 300 ℃,muscovite has no effect on the thermaldecomposition of APP,and the initialdecomposition temperature of APP/muscovite at 283 ℃ is basically the same as the APP at 295 ℃,and the main thermaldecomposition products are polyphosphoric acid and NH_4H_2PO_4 at 300 ℃.The polyphosphoric acid,the decomposition products of APP,can enable K and Siout of muscovite and interact with muscovite chemically to generate Al_2O_3·2SiO_2,α-SiO_2 and phosphates（AlPO_4 and K_5P_3O_（10））compounds during 400 ℃-800 ℃,which own obvious adhesive phenomenon and porous structure with the apparent porosity of 58.4%.Further reactions between phosphates other than reactions among Al_2O_3·2SiO_2 and α-SiO_2 can generate KAlP_2O_7 at 1 000 ℃ and the density of residualproduct is improved by low melting point phosphate filling pore to form relatively dense structure and decrease the apparent porosity to 44.4%.The flame resistant and self-supported ceramic materials are expected to enhance the fire-retarding synergistic effect between APP and muscovite.

Influence of Ammonium Polyphosphate on Thermal Decomposition of Reconstituted Tobacco and CO Evolution

The thermal behaviors and burning characteristics of reconstituted tobacco （RT） are strongly related with evolved gaseous products. The effect of ammonium polyphosphate （APP） as an additive of RT on the pyrolysis behavior and CO evolution was studied, emphasizing the role of heating velocity in reducing CO delivery of the mainstream smoke by APP. Thermogravimetric analysis （TGA） was employed to investigate the influence of APP on RT thermal behavior. Slow and flash pyrolysis of RT were compared to discuss the role of heating rate in decreasing CO by APP. TGA results demonstrated that, in dependence on APP concentration, APP influenced exothermal amount and weight loss rate during RT thermal decomposition, promoted the formation of char and retarded the thermal decomposition of RT. In addition, APP had a considerable influence on the evolution of gaseous products during thermal decomposition of RT. Both CO delivery per cigarette and that per puff in the smoking process were significantly reduced in dependence on APP content in RT. Comparative analysis of CO evolution patterns in the flash and slow pyrolysis elucidated that heating rate played a key role in decreasing CO evolution by APP. The results suggest that APP is a potential burning additive for controlling CO delivery in mainstream smoke of RT.

DOPO衍生物-APP协同的阻燃水性聚氨酯的制备及性能研究

基于聚磷酸铵(APP)阻燃剂与阴离子聚氨酯相容性差,所得聚氨酯燃烧仍然产生大量熔滴,采用磷系阻燃剂对皮革用阴离子水性聚氨酯进行阻燃改性,探究APP和9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)的衍生物(DOPO-PHB)两种阻燃剂协同作用的阻燃改性体系。通过极限氧指数(LOI)、垂直燃烧试验和热重分析考察了其阻燃性能和热降解性能,用拉伸机测定了薄膜的力学性能。结果表明,当添加1%APP-4%DOPO-PHB阻燃剂时,聚氨酯LOI值为27.8%,垂直燃烧达到V-0级别,无熔滴,聚氨酯的力学性能提升,相容性提高。

不同APP添加量对复合肥料造粒性能的影响

聚磷酸铵(APP)作为近几年备受关注的新型肥料,在农业应用中研究较多且效果显著,但作为原料在复合肥料生产中的研究报道较少。为探究APP与其他肥料的复配和造粒性能,采用APP、磷酸一铵(MAP)、磷酸二铵(DAP)等原料通过复配再造粒制备复合肥料。肥料制备共设计两个方案,其中方案I以APP、MAP、尿素和K_(2)SO_(4)为原料,方案II以APP、DAP、尿素和K_(2)SO_(4)为原料,同时两个方案又分别设定不同的APP添加量作为变量,且对原料配伍性能、造粒过程现象、加水量、成粒率、肥料p H、颗粒强度、颗粒分散性及肥料吸湿性等造粒性能进行了评价。结果表明:APP与其他原料复配再造粒能够制备2~4.75 mm的颗粒产品;当聚合磷质量分数≥40%时,复配性能良好;不同磷源配伍对复合肥料造粒性能有明显影响,方案II的产品成粒率、颗粒强度和分散性均优于方案I,但方案II的吸湿性较强;适宜的APP添加量有利于复合肥料造粒,两个方案均显示在聚合磷质量分数为20%~40%时,肥料产品的成粒率较高,方案I>67%,方案II>77%。

Synergistic Flame Retardant Effect of Ammonium Polyphosphate and Aluminum Hydroxide on Polyurethane

The flame-retardant properties of polyurethane(PU)containing ammonium polyphosphate(APP)and aluminum hydroxide(ATH)were investigated.Moreover,the flame retardant performance was investigated through thermogravimetric analysis,limiting oxygen index(LOI),vertical combustion(UL 94),and cone calorimeter.When 15 wt%APP and 5 wt%ATH were added together,the PU/15%APP/5%ATH sample shows better thermal stability and flame-retardant properties.When 15 wt%APP and 5 wt%ATH were added together,the LOI value of the PU/15%APP/5%ATH sample was 30.5%,and UL 94 V-0 rating was attained.Compared with PU,the peak heat release rate(PHRR),total heat release(THR),and average effective heat combustion(av-EHC)of the PU/15%APP/5%ATH sample decreased by 43.1%,21.0%,and 29.4%,respectively.In addition,the flame-retardant mechanism was investigated through cone calorimeter.The APP/ATH addition simultaneously exerted condensed phase and gas phase flame retardant effects.APP and ATH have synergistic flame retardant properties.

Effect of Ammonium Polyphosphate on Plant Growth Development and Absorption of Phosphorus and Zinc in Corn Seedlings

Using pot experiment to study the effect of new fertilizer ammonium polyphosphate on plant growth and uptake of phosphorus and zinc in corn seedlings. The results showed that under the conditions of equal phosphate fertilizer application, ammonium polyphosphate added to phosphate fertilizer could significantly improve the plant height and stem diameter of corn seedlings after sowed for 60 days, while improved biomass of corn overground part and roots and root shoot ratio. When the ratio of ammonium polyphosphate and diammonium phosphate was 2：1 （available phosphorus ratio）, the effect was the best. Ammonium polyphosphate had little effect on the phosphorus content of overground part of corn seedlings, but increased the phosphorus cumulant. In addition, ammonium polyphosphate applica- tion significantly improved the zinc concentration and zinc cumulant of corn over- ground part and roots. The results showed that ammonium polyphosphate had bet- ter bioavailability, meanwhile promoted the absorption of microelement zinc in crops.

高岭土对APP/PER/PP复合材料性能的影响

以PP废玩具料(W-PP)为主材,高岭土(Kaol)、聚磷酸铵(APP)和季戊四醇(PER)为阻燃剂,通过熔融挤出制备一系列Kaol/APP/PER/W-PP复合材料,对复合材料的极限氧指数(LOI)、UL 94阻燃等级、力学性能和热变形温度(HDT)进行测试,并用锥形量热仪进行分析,结果表明,APP/PER添加后,复合材料的阻燃性能和HDT明显提高,力学强度逐渐降低;适量的Kaol和APP/PER具有较好的协同阻燃效果,而且,添加Kaol后,复合材料的力学性能和HDT明显提升,当在W-PP中同时加入3%的Kaol和25%的APP/PER时,复合材料的LOI为32.1%,阻燃达到UL 94(1.6 mm)V-0级,与单独添加相比,拉伸强度、弯曲模量、弯曲强度和缺口冲击强度均提高了28%APP/PER的性能分别提高了16.9%、15.0%、27.4%和31.3%。

磷化瓜尔胶与APP协同阻燃PLA的性能研究

采用9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)和1,2,3,6-四氢邻苯二甲酸酐(THPA)对瓜尔胶(GG)进行改性得到磷化瓜尔胶(DTGG),并通过核磁共振和傅里叶变换红外光谱对其结构进行表征。以DTGG为碳源,聚磷酸铵(APP)为酸源和气源对聚乳酸(PLA)进行阻燃改性。通过垂直燃烧(UL 94)、极限氧指数(LOI)和锥形量热仪(CONE)对PLA共混物的阻燃性能进行测试。采用热失重分析(TG)和场发射扫描电子显微镜(FESEM)对其热性能和形貌进行表征。结果表明,当DTGG/APP的质量比为9/11时,LOI值为33.4%,达到UL 94 V-0等级。同时,样品的总热释放(THR)值最低,与纯PLA相比降低了33.8%。从FESEM观察到阻燃剂在PLA基质中分布均匀。DTGG和APP的协同作用有效地增强了PLA共混物的阻燃性能。最后讨论了DTGG和APP对PLA共混物的协同阻燃作用机制。

棉/APP/PHBV阻燃复合材料的制备及性能分析

探讨精梳落棉/聚磷酸铵(APP)/3⁃羟基丁酸酯和3⁃羟基戊酸酯的共聚物(PHBV)阻燃复合材料替代黄麻阻燃复合材料的可行性。将精梳落棉制备成纤维粉末,注塑成型为9种配比的棉纤维粉/APP/PHBV阻燃复合材料,以阻燃和燃烧性能为指标进行了配比优选。测试了优选配比的棉纤维粉/APP/PHBV的阻燃和燃烧性能、热稳定性、拉伸性能、红外光谱、断面形貌结构,并与2种典型的黄麻阻燃复合材料产品进行对比。结果表明:棉纤维粉/APP/PHBV质量配比为35/10.5/54.5时,阻燃性能较优,LOI值可达27.9%,UL94等级V⁃0级,点燃时间20 s,平均有效燃烧热26.6 MJ/kg,平均热释放速率184 kW/m^(2),总释放烟量4.5 m^(2);与黄麻纤维毡/APP/PP和黄麻纤维毡/APP/PHBV阻燃复合材料相比,除拉伸强度稍低外,其他各项性能均达到黄麻阻燃复合材料水平。认为:棉纤维粉/APP/PHBV 35/10.5/54.5的阻燃复合材料性能较好,可部分替代黄麻阻燃复合材料。

Recent advances in constructing new type of epoxy resin flame retardant system using ammonium polyphosphate

In recent years,research has focused heavily on the investigation of functionalized ammonium polyphosphate(APP)flame retardants to improve the fire safety of epoxy resins(EP).The reason for this is the dual nature of APP's performance in fire protection of EP.This article provides a comprehensive overview of the advances in the use of functionalized APP flame retardants to improve the fire resistance of EP materials.It then presents the improvement of the modification of the functionalized APP flame retardants in terms of the hydrophobicity,compatibility and catalytic ability of the flame retardants,as well as the effects on the fire resistance,heat resistance,smoke reduction and mechanical properties of the EP composites.After the summary and comparison of the relevant studies,it is clear that the functionalized APP flame retardants can effectively improve the fire safety of EP composites and offset the adverse effects of APP in EP flame retardant applications.In addition,APP flame retardants can obtain various excellent functions through the use of materials with different properties,and the interaction between APP and materials can also lead to more efficient fire protection.However,the current problem is to find ways to streamline the process and minimise the costs associated with functionalized APP flame retardants,as well as to use them effectively in industrial production.We hope that this review can provide valuable hints and insights for the practical application of functionalized APP in EP and perspectives for future research.

APP@MOFs核-壳结构型阻燃剂制备及其在环氧树脂中的应用研究

采用微胶囊改性技术,以高效阻燃剂聚磷酸铵(APP)为内核、多功能金属有机框架材料(ZIF-8)为外壳,合成了新型核-壳结构型阻燃剂(APP@ZIF-8),并将其用于环氧树脂(EP)中制备阻燃复合材料,通过一系列测试分析来表征APP@ZIF-8的结构特征、评估其耐水性能,并采用锥形量热仪法研究了EP复合材料的阻燃、抑烟减毒性能。结果表明:经ZIF-8的包裹实现了APP溶解度降低、耐水性能显著提升;掺入10 wt%的APP@ZIF-8后,EP复合材料的热释放速率峰值(pHRR)、烟气释放速率峰值(pSPR)和CO释放速率峰值(pCOP)较纯EP分别降低了61.3%、43.6%和60.5%,使EP复合材料的阻燃性能和抑烟减毒性能均得到提升,这主要得益于APP@ZIF-8在燃烧过程中促进了致密炭层的形成(残余炭量较纯EP提高了367.1%),抑制了可燃产物和毒性烟气的扩散,此项工作为环氧树脂的阻燃改性提供了一种新思路。

A novel high-efficient P/N/Si-containing APP-based flame retardant with a silane coupling agent in its molecular structure for epoxy resin

A flame retardant containing multiple antiflaming elements usually exhibits high-efficient flame retardancy. Here, a novel P/N/Si-containing ammonium polyphosphate derivative(APTES-APP) is synthesized from ammonium polyphosphate(APP) and silane coupling agent(3-aminopropyl)triethoxysilane(APTES)via cation exchange, which is quite different in the chemical structure from APTES-modified APP for retaining silicon hydroxyls. APTES-APP is highly efficient for the epoxy resin. 8%(mass) APTES-APP imparts excellent flame retardancy to the epoxy resin, with a V-0 rating at the UL-94 test(1.6 mm)and an LOI value of 26%(vol). The peak heat release rate and total smoke production of the flameretardant epoxy resin are decreased by 68.1% and 31.3%, respectively. The synergy of P/N/Si contributes to the well-expanded char residue with a strong and dense surface layer, which is a very good barrier against heat and mass transfer. Besides, there is no significant deterioration in the mechanical properties of flame-retardant epoxy resin thanks to silicon hydroxyls forming hydrogen bonds with epoxy molecules. Meanwhile, other molecules can be grafted onto APTES-APP via these silicon hydroxyls, if needed.Briefly, this work has developed a new strategy for amino silane as flame retardants. In conjunction with a low-cost and simple preparation method, APTES-APP has a promising prospect in the high-performance flame-retardant epoxy.

Pa-APP/PER/α-ZrP阻燃聚丙烯酸酯乳液的制备及性能

首先,采用乳液聚合法制备了固含量为45%的水性聚丙烯酸酯乳液,随后向其中加入复合阻燃剂哌嗪改性聚磷酸铵(Pa-APP)、季戊四醇(PER)和α-磷酸锆(α-ZrP)制备了Pa-APP/PER/α-ZrP阻燃聚丙烯酸酯乳液,并测定其阻燃效率,分析其阻燃机制。通过正交实验得到复合阻燃体系的最佳配方为:复合阻燃剂在聚丙烯酸酯乳液中添加量为25%(以聚丙烯酸酯乳液固体质量计,下同),其中α-ZrP添加量为2%(以聚丙烯酸酯乳液固体质量计,下同),m(Pa-APP)∶m(PER)=4.5∶1,在该条件下制备的Pa-APP/PER/α-ZrP阻燃聚丙烯酸酯乳液的极限氧指数达30.4%,UL-94测试达V-1等级,热释放速率峰值和总热释放量比纯聚丙烯酸酯分别降低了77.65%和39.73%。通过SEM-EDS、XPS、FTIR表征了Pa-APP/PER/α-ZrP阻燃聚丙烯酸酯乳液燃烧后的残炭形貌和成分。结果表明,Pa-APP/PER/α-ZrP阻燃聚丙烯酸酯乳液能够有效抑制聚丙烯酸酯燃烧过程中的熔滴,提高残炭量并改善炭层结构,降低燃烧过程中的总产烟量,从而提高Pa-APP/PER/α-ZrP阻燃聚丙烯酸酯乳液的阻燃安全性能。

HKUST-1@APP环氧树脂阻燃复合材料的合成与性能

使用溶剂热法将HKUST-1〔Cu3(BTC)2,BTC为均苯三甲酸根离子〕负载到聚磷酸铵(APP)表面制得了HKUST-1@APP,然后将HKUST-1@APP与环氧树脂(EP)混合后固化制备了HKUST-1@APP/EP阻燃复合材料。采用SEM、EDS、XRD、FTIR对HKUST-1@APP进行了表征,通过垂直燃烧测定仪、氧指数测定仪、TGA、电子拉力机对HKUST-1@APP/EP复合材料进行了性能测试。结果表明,当HKUST-1@APP的添加量为总体系质量的5%时,制得的HKUST-1@APP/EP复合材料的极限氧指数为27.5%,垂直燃烧测试(UL-94)通过V-1级,样品残炭的AD/AG(拉曼光谱中无定形碳的碳原子与晶体碳中sp2杂化的碳原子振动分别形成的D峰与G峰的峰面积比)降至0.043,而添加总体系质量5%APP的EP复合材料的AD/AG为0.3161,说明HKUST-1@APP还可以改善EP燃烧过程中产生的炭层,使炭层更连续、石墨化程度更高。

MFAPP制备阻燃浸渍纸及其在饰面高密度纤维板中的应用

【目的】浸渍纸作为表面装饰材料,具有易燃性,为降低其火灾危险性,探究微胶囊化聚磷酸铵对浸渍纸热稳定性和阻燃性能的影响,并考察了阻燃浸渍纸对高密度纤维板性能的影响。【方法】以三聚氰胺甲醛树脂(MF)为壁材,聚磷酸铵(APP)为芯材,通过原位聚合法制备微胶囊化聚磷酸铵(MFAPP),研究反应时间、反应温度、APP与MF预聚体质量比、pH值对包覆率的影响;分析MFAPP对浸渍树脂理化性能的影响;研究MFAPP浸渍纸饰面高密度纤维板的物理力学性能和阻燃性能,分析燃烧后的残炭形貌,探讨MFAPP的阻燃机理。【结果】(1)当反应时间2 h、反应温度70℃、APP与MF预聚体质量比2∶1、pH值为5时,可制备包覆率为17.48%的微胶囊化聚磷酸铵。SEM-EDS、FTIR和TG测试结果表明MF树脂成功包覆在APP表面,且热稳定性提高。(2)树脂理化性能测试结果表明MFAPP对浸渍树脂固化时间和黏度影响较小,可满足工业化要求。(3)MFAPP浸渍纸饰面高密度纤维板的吸水厚度膨胀率和表面胶合强度分别为6.9%和1.21 MPa,可达到相关国标规定。(4)与高密度纤维板相比,MFAPP浸渍纸饰面高密度纤维板的阻燃抑烟性能良好,总热释放量和烟产生量分别降低了13.19%和17.62%。MFAPP浸渍纸表现出良好的气相和凝聚相阻燃作用。【结论】采用原位聚合法制备的MFAPP,可用于制备阻燃浸渍纸,提升浸渍纸饰面高密度纤维板的阻燃抑烟性能。

聚磷酸铵磷肥对玉米苗期磷素吸收利用和潮土无机磷组分含量的影响

聚磷酸铵磷肥具有缓释性,在石灰性土壤中能够长效供磷,但是释放缓慢易导致作物苗期供磷不足进而影响最终产量,探讨玉米苗期聚磷酸铵磷肥合理施用量及其对潮土无机磷组分含量的影响,为合理施用聚磷酸铵磷肥提供科学依据。采用盆栽试验,设置6个聚磷酸铵磷肥水平,P_(2)O_(5)0、30、60、90、120和150 mg/kg(分别用P0、P30、P60、P90、P120、P150表示),测定玉米的生物学指标和玉米磷素吸收利用状况,同时测定土壤有效磷和无机磷组分含量。结果表明,相较于P0水平,聚磷酸铵磷肥能显著提高玉米的株高、茎粗、地上部和根系干重,株高、茎粗和地上部干重均表现出0~90 mg/kg增幅大、90~150 mg/kg增幅小的趋势,P150水平的株高、茎粗、茎和叶生物量比P0水平分别提高了71.0%、68.8%、334.5%和201.6%。P90水平的玉米茎、根磷含量和磷肥利用效率均为最低值,但磷肥利用效率与P120和P150水平无显著性差异;非根际土壤有效磷含量随施磷量的增加呈极显著的线性关系,每1 mg/kg聚磷酸铵施用量相当于增加了0.0894 mg/kg的非根际土壤有效磷,施磷70 d后根际和非根际土壤有效磷含量依然在13.23 mg/kg以上;土壤无机磷总量随聚磷酸铵磷肥施用量的增加呈上升趋势,相较于P0水平,Ca_(2)-P、Al-P含量出现了显著性变化,O-P含量与比例各施磷水平间无显著性差异,P150水平Ca_(10)-P含量显著高于P90及其以下各处理,相较于P0水平,其Ca_(10)-P累积量增加了101.70 mg/kg。基于本研究结果,聚磷酸铵磷肥可以在根际和非根际石灰性潮土上维持较高的土壤有效磷含量,P_(2)O_(5)60 mg/kg水平以下玉米生物量累积不足,P_(2)O_(5)120 mg/kg水平以上增加了土壤Ca_(10)-P的含量与比例,P_(2)O_(5)90 mg/kg是潮土上玉米苗期较为适宜的聚磷酸铵磷肥用量。