Objective:To investigate the expression of neutrophil collagenase and effect of metIlylprednisolone in acute lung injury induced by endotoxin.
目的:探讨急性肺损伤时肺组织中性粒细胞胶原酶的表达及甲基强的松龙调控关系。
The result shows that ideal particles,active particles and redispersible particles exist in prepolymer dispersions.
结果表明,预聚体分散体中可能存在理想胶粒、活性胶粒、可再分散胶粒,理想胶粒中的NCO处于胶粒内部,活性胶粒中的NCO处于胶粒的内部和表面;分散和扩链反应中活性胶粒之间的反应使胶粒粗化和呈双峰分布;提高预聚体nNCO/nOH、COOH%,预聚体分散体中活性胶粒增加;TEM显示聚氨酯分散体胶粒主要呈球形,部分呈不规则形态。
Seeded emulsion polymerization was adopted to prepare hollow latex particles with moderate size and enough rigidity.
论文研究了搅拌强度、反应温度、羧基单体甲基丙烯酸的用量及加料方式、乳化剂用量及加料方式、交联单体用量、核壳层单体用量的比例、碱处理时间、温度和初始pH值等因素对乳液体系稳定性、中空乳胶粒粒径及其结构形态的影响,确定了最佳搅拌强度、最适宜反应温度、最佳核壳单体比、适宜乳化剂、交联剂、羧酸单体用量及适宜加料方式和最佳碱处理条件。
Polymer emulsion with hollow latex particles, which is film-formable under room temperature and can be cross-linked under high temperature, was prepared by core-shell emulsion polymerization under low emulsifier condition.
首先以甲基丙烯酸甲酯(MMA)、甲基丙烯酸(MAA)和丙烯酸丁酯(BA)为共聚单体制备种子乳液;并在种子乳液基础上以MAA、MMA和二乙烯基苯(DVB)为单体进行聚合,制成带羧基的核乳胶粒;然后以苯乙烯(St)、MAA、BA以及DVB为共聚单体制备交联的共聚物;随后在最外层包覆BA和甲基丙烯酸缩水甘油酯(GMA)的共聚物;最后通过对其进行碱处理,制得含有功能性基团的中空乳胶粒。
In this paper, emulsion polymerization was adopted to prepare hollow latex particles with moderate size and enough rigidity.
论文研究了搅拌强度、反应温度、加料方式、乳化剂用量及其加料方式、交联单体用量、碱处理时间等因素对乳液体系稳定性、中空乳胶粒粒径分布及其结构形态的影响。
Preparation of Emulsion Coatings with Cross-linkable Hollow Latex Particles;
可交联中空乳胶粒乳液型涂料的制备
Preparation and Structure Control of Hollow Polymer Particles--Synthesis and Effect on the Hollow Structure of the Core Latex
中空聚合物乳胶粒子的合成与结构控制——(Ⅰ)核层乳胶粒的制备及其影响
Particle Size and Its Distribution of MMA/BA Semi-continuous Emulsion Polymerization
MMA/BA半连续乳液聚合过程中乳胶粒径及其分布
Effects of Hollow Polymer Emulsion and Hollow Glass Spheres on Contrast Ratio of Latex Paint
中空聚合物乳液和中空玻璃微球对乳胶漆对比率的影响
Studies on the Morphological Development of Latex Particles in Semi-continuous Emulsion Polymerization Process;
半连续乳液聚合乳胶粒形态演化研究
DETERMINATION OF RELATIONSHIP OF ORIGINAL EMULSIFER AMOUNT Vs EMULSOID′S NUMBER IN CORE-SHELL EMULSION POLYMERIZATION BY LIGHT EXTINCTION METHOD;
用消光法确定核壳结构乳液聚合过程中原始乳化剂量与乳胶粒数目之间的关系
latex from tapped rubber trees.
乳胶从橡胶树中抽出。
Preparation and Application of ASA Neutral Sizing Agent Based on Microparticle Emulsification Technology
基于微粒乳化技术的ASA中性施胶剂的制备与应用
Surface modification of Fe_3O_4 and it′s using in protein adsorption and separation of natural rubber latex
Fe_3O_4粒子的表面修饰及其吸附分离天然胶乳中蛋白质的研究
Preparation and Characterization of Oxide Hollow Spheres by Templating Against Poly (Styrene-Acrylic Acid) Latex;
以苯乙烯-丙烯酸（酯）共聚物乳胶粒为模板制备氧化物空心微球及其表征
Study on Hetero-coagulation Process of Poly (Tetrafluoroethylene) Latex Particles and Inorganic Particles;
PTFE胶乳与无机粒子共凝聚过程研究
Synthesis of PBA/P(MMA-ITA) latex particles with core-shell structure
PBA/P(MMA-ITA)核壳胶乳粒子的合成
Size Distribution of Nanoparticles Self-Assembly Encapsulation Emulsion
纳米粒子自组装胶囊化乳液粒径分布的研究
Factors Influencing Latex Particle Size and Water Absorption of Styrene-Acrylic Emulsion
苯丙乳液胶粒粒径和涂膜吸水率的影响因素
Study on Mechanical Properties of Rubber and Polymer Latex Modified Shale Ceramic Grain Concrete;
橡胶胶乳改性陶粒混凝土力学性能研究
Particle Size Distribution and the ζ Potential of Anionic Polysilicone Emulsion
阴离子型有机硅乳液的乳胶粒粒径分布及ζ电位的研究
Research on Aerosol Particle Deposition Characteristics in Ventilation Duct Systems;
气溶胶颗粒在通风空调风管系统中沉降规律的研究
Multicompartment Micellar Solutions in Shear and Confinement Studied by Dissipative Particle Dynamics Simulations;
多隔段胶束在剪切条件下和限定空间中的耗散粒子动力学研究