熔体流动速率

通过熔体流动速率测试及转距流变实验，分析确定了不同含量玻纤增强聚丙烯（PP）的挤出吹塑成型加工性能及加工工艺。

By measuring MFR and torque rheological property , the processing property and processing technique of the extrusion blow molding of GF / PP with different content of glass-fibre were determined .

H2的加入量、等规度、聚合反应密度、原料中杂质、反应温度等五方面因素对聚丙烯熔体流动速率具有重要影响。

Five factors that H2quantity input , isotactic degree , contaminations in raw material , reaction temperature so on critically affect the MFR of polypropylene .

氮气保护在PP熔体流动速率测试中的作用

Function of N_2 atmosphere in test of melt flow rate of PP

一般，随着SDS相对分子质量增大，熔体流动速率减小；

The MFR decreasing with increasing of molecular weight ;

随着分散剂用量的增加，PVC干混料表观密度增大；熔体流动速率降低；

With the increase of dispersing agent content , apparent density and hardness increased , melting flow index decreased .

增加DCP用量会使产品的G和熔体流动速率（MFR）升高。

PP-g-MA grafting degree and melt flow rate become high with DCP content increasing .

研究了聚丙烯（PP）熔体流动速率（MFR）对结晶度及性能影响。

The melt flow rate ( MFR ) impacting to crystallinity and properties of polypropylene ( PP ) was studied .

分别采用热重分析、熔体流动速率和氧化开始温度等分析方法考察了其在聚丙烯（PP）中的稳定化作用。

Thermogravimetric analysis ( TG ), melt flow rate , and oxidation onset temperature ( OOT ) were employed to characterize the stability of PP containing the antioxidants .

将改性后的CaCO3填充于软PVC塑料体系当中研究其材料的各项性能，发现采用磷酸酯改性CaCO3可以显著地提高软PVC/CaCO3塑料的熔体流动速率和材料的撕裂强度。

The modified CaCO 3 was filled in soft PVC system . The investigations showed that the melt index ( MI ) and tearing strength could be remarkably improved .

结果表明：随PC用量的增加，HDPE/PC共混合金的熔体流动速率减小，缺口冲击强度增大，拉伸强度增大，维卡软化点变化不大。

The results show that MFR of HDPE / PC alloy is reduced , the impact strength and tensile strength is increased , and softening point has no remarkable changes with increasing the content of PC .

流变性能和熔体流动速率（MFR）测定表明，接枝反应有效地改善了PP流变性能。

The results of rheological behavior testing and melt flow rate ( MFR ) show that PP 's rheological performance is improved effectively by graft-modification .

阻燃剂的加入提高了熔体流动速率（MFR），使成型加工比较方便。

The join of fire retardant increase the melt flow rate ( MFR ), make forming more convenient .

研究了自制的两种相容剂对PC/ABS合金的力学性能、应力开裂性能和熔体流动速率的影响，并用SEM研究了共混体系的相容性。

The influence of two self-made compatibilizers on the mechanical property , stress-crack property and melt flow rate of PC / ABS alloys was studied . The compatibility of blend systems was studied by SEM .

对用于铝塑复合管的不同种PE原料的力学性能、熔体流动速率、维卡软化点等性能进行了测试，并研究了标记铝塑复合管不同种用途的色母料的加入对材料性能的影响。

The several brands of PE materials used on Al plastics compound pipe are tested , and its mechanics property , Melt Index ( MI ), Vicat Softening Point ( VSP ) and etc are given .

用重量法计算了马来酸酐的接枝率。实验结果表明，接枝聚丙烯（PP-g-MAH）的熔体流动速率和马来酸酐的接枝率随紫外辐照时间的增加而增加；

Experimental results show that grafting ratio and melt index of PP-g-MAH increase with increasing ultraviolet irradiation time ;

紫外辐照时间保持不变，PP-g-MAH的熔体流动速率基本相同。

And that at the same ultraviolet irradiation time , melt index of PP-g-MAH is nearly the same .

研究结果表明：相同熔体流动速率的CR-PP与氢调法PP比较，CR-PP的冲击强度高，氢调法PP的断裂伸长率高。

The results showed that in the same MFR , CR-PP has higher impact strength and HM-PP has higher elongation .

熔体流动速率（MFR）的测定表明当复合阻燃剂的添加量为40份时，仍能满足加工工艺的要求。

The result of MFR showed that the compounded fire - retardant with 40 phr could meet the needs of processing craftwork .

研究结果表明：加入PP时，材料的拉伸强度、熔体流动速率和压缩永久变形增大，但其断裂伸长率迅速下降，回弹性逐渐降低；

The results showed that in case of adding PP , the tensile strength , melt flow rate and compression set of the SEBS increase , but the elongation at break decreases quickly and the elastic resilience decreases gradually ;

通过聚乙烯熔融挤出接枝甲基丙烯酸（MAA），研究了各种因素对LDPE接枝率及熔体流动速率的影响。

Factors influencing the graft ratio and melt flow rate of LDPE were studied based on the melt extrusion of methyl acrylic acid ( MAA ) grated onto LDPE .

应用熔体流动速率仪考察了口模半径、载荷及温度对聚全氟乙丙烯（FEP）流动性能的影响。

The influences of die radius , load and temperature on the flow properties of FEP melt were investigated by using a melt flow indexer .

结果发现，PP结晶过程可以产生γ晶型，随着结晶温度的升高、成核剂含量和PP中乙烯单体含量的增加、PP熔体流动速率的增大，γ晶型含量增加。

The experimental results indicate that γ - modification can be generated in the crystallization process of PP and its content rises with increasing the crystallization temperature , content of nucleating agent and ethylene monomer and melt follow rate of PP.

反应挤出条件对PP-g-GMA接枝率、接枝效率和熔体流动速率的影响

Influence of Reactive Extruding Conditions on the Grafting Degree , Grafting Efficiency and Melt Flow Rate of PP-g-GMA

在剪切力作用和较低温度下，利用过氧化物对等规聚丙烯（PP）化学降解，得到了具有超高熔体流动速率（MFR）的PP降解产品。

Degraded products having super high melt flow rate ( MFR ) from polypropylene ( PP ) were prepared via chemical degradation of isotactic PP with peroxide under action of shear force and at comparatively low temperature .

在熔融温度以上处于凝胶状态，熔体流动速率一般不易测定，因此要用加工普通PE的设备加工UHMWPE，需要对其进行流动改性。

Beyond the melting temperature , the polymer is gelatinous , and it is very difficult to measure the flow rate , so if we want to process the UHMWPE with the common equipment for PE we sho-uld improve the rheology .

实验结果表明：产物的接枝率和熔体流动速率（MFR）变化与聚乙烯的种类有直接关系，接枝性能从优到差的顺序为：LDPE>LLDPE>HDPE；

The results show that : the kind of PE influences the graft rate and MFR of the product directly , the sequence of grafting ability is LDPE > LLDPE > HDPE ;

针对使用BUSS捏合机生产聚对苯二甲酸丁二酯（PBT）过程申出现的熔体流动速率（MFR）与产品配方体系中低分子量PBT树脂用量间的异常关系进行了研究和分析。

The irregular relationship between the melt flow rate ( MFR ) and PBT resin content in the product compounding system during the production of PBT engineering plastics in BUSS kneader was researched and analyzed .

未经处理的Mg（OH）2在填充量超过50%时，PP/Mg（OH）2体系的OI≥28.5，但这时冲击强度不足纯PP的30%，熔体流动速率低于0.6g/10min；

When the dosage of untreated Mg ( OH ) 2 was over 50 % ( mass content ), the oxygen index of the system was more than 28.5 , impact strength was 30 % that of pure PP and melt flow rate was 0.6g/10min .

研究了γ-辐照PP和TPU的颜色变化、凝胶含量、力学性能、熔体流动速率及γ-辐照TPU溶液的相对粘度。

The color change , the gel content , the mechanical properties and MFR of the γ - radiated PP and TPU under the different radiation dose were investigated . The relative viscosity of the γ - radiated TPU solution was studied .

通过对熔体流动速率（MFR）、产品抗冲击性能等关键性能指标的分析表明，加入少量氢气可使产品MFR小于0.5g/10min；

The analyses of melt flow rate ( MFR ) and impact resistance of the resin confirm that adding hydrogen in small quantity can lower MFR to below 0.5 g / 10 min.