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- The tar and char yield were low and decreased with the gasification temperature. 焦油和焦炭的产率较低并随气化温度的提高而降低。
- Char yield of these resins was studied using TG and electro paramagnetic resonance (EPR). 用热重、电子顺磁共振等方法研究了改性酚醛树脂的残碳率。
- The thermal stability and char yield of PFR were depended on the degradation process of methylene bridges. 其中亚甲基的热解对酚醛树脂的热稳定性及高温下的成炭性能有着至关重要的作用。
- And a phenoloc resin with high char yield, which can be widely used for heat protection of high pressure solid rocket motors, has been developed. 研究了酚醛树脂配比与酚醛树脂的结构、热降解行为、烧蚀性能之间的关系,研制出了可广泛应用于高压固体火箭发动机热防护的高炭化率酚醛树脂。
- The char yield for cellulose, xylan and lignin decreases with temperature rise, and finally closes to a constant value about 1.5%, 22% and 26%. 三组分热裂解焦炭产量随温度升高而降低，最终纤维素热裂解焦炭产量为1.;5%25，而木聚糖和木质素分别为22%25和26%25。
- The results indicate that the treated soybean protein fiber and the blend have higher LOI and char yield values,lower T_e,smaller ... 结果表明,与未经阻燃处理的纤维相比,阻燃处理后的纤维在物理力学性能没有减弱的情况下,极限氧指数和剩炭率提高,阻燃性能明显改进。
- The char yield for cellulose,xylan and lignin decreases with temperature rise,and finally closes to a constant value about 1.5%,22% and 26%. 三组分热裂解焦炭产量随温度升高而降低;最终纤维素热裂解焦炭产量为1.;5%25;而木聚糖和木质素分别为22%25和26%25。
- From the curing mechanisms of penolic resins,a couple of new structural phenolic resins with high char yield was introduced. 从树脂的固化机理出发,综述了几种经加成、环化、开环聚合等得到的新型结构的高残炭酚醛树脂。
- These studies provided theoretical evidence for the application of ablation resistant materials and direction for the development of new high char yield resins. 这些研究为耐烧蚀材料的应用提供了理论依据,为新一代的高残炭树脂的开发提供了方向。
- It studied the inflaming retarding and smoke suppressing mechanisms through the limiting oxygen index(LOI),the char yield test,smoke density rating(SDR),maximum smoke density(MSD),and SEM. 通过极限氧指数(LOI)、剩炭率、烟密度等级(SDR)和最大烟密度(MSD)的测定以及用电子扫描显微镜(SEM)对燃烧后所生成炭层的观察,探讨了协同体系阻燃抑烟的机理。
- Char yield of curing product of BAPP and epoxy resin is higher to that of DDM and limiting oxygen index (LOI) of curing product of BAPP and epoxy resin is 34. The effect of BAPP by glass state temperature of curing product of epoxy resin is little. 与DDM的环氧固化产物相比较,BAPP与环氧树脂的固化产物有较高的成炭率,极限氧指数(LOI)为34,BAPP对固化产物的玻璃化温度影响不大。
- The results show that,by adding either AS-BOZ or TPA,the viscosities of B-BOZ resin blends are reduced greatly,but the glass transition temperature(T_g) and the char yield are highly improved via the crosslinking reaction of the polymerizable groups. 结果表明,无论是AS-BOZ还是TPA的引入都使得双环苯并?f嗪体系黏度降低,同时提高体系的交联密度,使固化物的Tg和残碳率都大幅度提高。
- A new high char resin-polyary lacetylene(PAA) was introduced.The strong exotlhermic effect was controlled by thermal and catalytic polymerization.The char yield of cured PAA was up to 80%. 本文研究了新型高碳树脂-聚芳基乙炔，使用热预聚和催化预聚法来控制树脂强烈的固化放热，聚芳基乙炔树脂具有高达80%25的残碳率。
- We will never yield to invaders. 我们绝不会向侵略者屈服。
- The town was forced to yield after a long siege. 该城受长期围困而被迫弃守。
- Keywords char yield;benzoxazine;ring-openning;curing reaction;modification; 残碳率;苯并恶嗪;开环聚合;固化反应;
- Keywords novolac;cyanate ester of novolac;high char yield;ablative material; 线型酚醛树脂;酚醛型氰酸酯;高残碳率;烧蚀材料;
- These trees gave a high yield of fruit this year. 这些果树今年获得了大丰收。
- Capacity or inclination to yield under pressure. 支持不住在压力下屈服的能力或倾向
- These apple trees yield plenty of fruit this year. 这些苹果树今年结了许多苹果。
