增韧剂

However,weak compatibility of PVC and modifiers will attenuant toughening effect,and low molecule modifiers also easily immigrate onto the surface of product, then pollute enviroment.As a result, the performance of product is degraded.

然而，改性剂与PVC的相容性不好将减弱增韧效果，低分子改性剂也易迁移到制品表面而污染环境，并使性能下降。

The results showed that for 2Y-TZP materials, because of low stabilizer content and small critical transformation size, more tetragonal zirconia could change into monoclinal, better effect of transformation toughening operated, hence higher fracture toughness was obtained.

晶粒尺寸、稳定剂含量对氧化锆陶瓷相变增韧效果具有重要的影响。2Y-TZP材料由于稳定剂含量低，临界相变尺寸也小，在低温烧结条件得到细晶粒情况下，断裂过程中有更多的晶粒达到或超过临界相变尺寸，因而具有更高的断裂韧性。

In small batch bulk PP/ nucleator system, The nucleator TMB-5 was used as the impact modification for different small batch bulk PP045 and PP075 in the second part of the project.

通过XRD分析表明，β成核剂TMB—5的加入使小本体PP的结晶度提高，并对β-PP有诱导生成作用，同时发现对小本体075具有较好的增韧效果，但使其强度有所下降。

The effects of varied impact modifiers including similar styrene elastomer, acrylnitrile-butadiene-styrene copolymerwith high content of polybutylene,ethylene- octene copolymer,butylene-styrene elastomer,styrene-butadiene-styrene elastomer,styrene/ethylene/butadiene/styrene block copolymeron the properties of su- per-toughened HIPS were investigated.

以高抗冲聚苯乙烯为基体树脂，采用双螺杆挤出机研究了不同抗冲击改性剂类苯乙烯弹性体、丙烯腈-丁二烯-苯乙烯共聚物高胶粉、聚烯烃弹性体、丁苯弹性体、苯乙烯-丁二烯-苯乙烯弹性体和苯乙烯-乙烯／丁二烯-苯乙烯共聚物对HIPS的增韧效果。

This paper mainly deals with these two parts:l.the effect of hydrosoluble HP,fibermesh and FDN on cement mortars bend resistant strength and compressive strength under the same operating conditions and with different HP mixtures;2.the effect of HP,FDN moderator,fly ash on the durability of concrete.that is the performance of resisting osmose,erosion and freeze thawing.

研究了HP水溶性高分子"纤维"、FDN高效减水剂与粉煤灰双掺配制的高性能混凝土的耐久性(抗渗透、抗硫酸盐侵蚀、抗冻融性能)。试验结果表明：HP水溶性高分子"纤维"对水泥砂浆和混凝土具有显著的增韧、增强作用，且水泥砂浆的抗压强度随着HP水溶性高分子"纤维"掺量的增加(2%-6%)而提高，抗折强度则降低；在混凝土中加入HP水溶性高分子"纤维"后，抗压强度随着掺量的增加2。

POM is easy to form big spherical crystals due to its regular chain structure, resulting in low notched impact strength, sensitive to notch. On the other hand, POM is incompatible with most modifiers and difficult to be modified.

但聚甲醛分子链结构规整，无侧基，易结晶，形成大球晶，缺口敏感，缺口冲击强度低，韧性差，且与其它改性剂相容性差，难以增韧。

As to the P—methylbenzene sulfonamide plasticizer, less than 10% is needed to meet the requirement of brittle— toughness transition. Whereas, for butyl P—hydroxybenaoate, 20% is needed for the plasticate system to reach the brittle—toughness transition.

对于苯磺酰胺增塑剂，只需不足10％的用量就达到脆—韧转变，而苯甲酸酯类增塑体系则需要20％的用量才能达到脆—韧转变。

Acrylonitrile-butadiene-styrene/polybutylene blend alloys was prepared, in which RC was used as compatibilizer and butadiene-nitrile rubber as toughener.

以ABS、PBT为基体树脂，RC为增容剂，NBR为增韧改性剂，并加入其它助剂，制备了ABS/PBT共混合金。

Calcium sulfate whisker and magnesium sulfate whisker as reinforcer,SBS as toughener,ABS as resin matrix were used for manufacturing modified ABS composite by melt mixing and extrusion.

以硫酸钙晶须、硫酸镁晶须为增强改性剂，高胶粉为增韧改性剂，ABS为主体材料，通过采用熔融混合挤出制得改性ABS复合材料。

The no-baking toughening haydite is produced with fly ash 50-60 wt%, slaked lime powder 5-15 wt%, gypsum powder 5-10 wt%, fiber 3-5 wt%, gas former 0.05-0.3 wt%, and water 20-25 wt%, and through mixing, forming and steam curing.

一种免烧增韧陶粒，其特征在于它由粉煤灰、消石灰粉、石膏粉、纤维、发气剂和水原料搅拌混合后成型蒸养而成，各原料所占质量百分比为：粉煤灰50-60、消石灰粉5-15、石膏粉5-10、纤维3-5、发气剂0.05-0.3、水20-25，各原料所占质量百分比之和为100％。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。