胶接

In the three systems, system realizes the crosslinking of PVC bases on the peroxide crosslinking mechanism, the tensile strength of crosslinked PVC has been improved somewhat, the IR spectrum of gel demonstrates that there are characteristic absorption peaks of n-alcohol that belongs to ethanol amine and benzenoid group. From the analysis of gel structure , deduces that the mechanism of crosslinking reaction: under the initiations of peroxide and high temperature, PVC yields macromolecules free radicals, at the same time , styrene"s polymerization and grafting onto PVC takes place, at last the system forms crosslinking structure through coupling between radicals; confirms that triethanol amine can absorb HC1 produced by degradation of PVC, so improves the crosslinking efficiency of peroxide, decreases the HCl"s promotion for PVC"s degradation; deduces that triethanol amine can activate the PVC macromolecules and prolong the free radicals" life-time of PVC macromolecules; the effect to the PVC macromolecule makes styrenes graft reaction easy, and thus improves the crosslinking efficiency.

三种体系中三乙醇胺/过氧化二异丙苯/苯乙烯体系基于过氧化物交联机理实现了聚氯乙烯的交联，聚氯乙烯交联后拉伸强度有一定提高，凝胶红外光谱分析证实了凝胶结构中含有乙醇胺的伯醇基团特征吸收和苯环的特征吸收，由凝胶结构分析，推断出交联反应的机理：聚氯乙烯在过氧化物和热作用下产生大分子自由基，苯乙烯在过氧化物和大分子自由基的作用下发生聚合和接枝反应，最终通过自由基之间的偶合产生交联；证实三乙醇胺可以吸收聚氯乙烯分解产生的HCl，提高了过氧化物的交联效率，消弱了HCl对聚氯乙烯降解的促进作用；推断三乙醇胺可以活化聚氯乙烯大分子并有可能使聚氯乙烯大分子自由基存在的时间得以延长，对聚氯乙烯大分子的作用使苯乙烯的接枝反应易于发生，从而提高了交联效率。

Fixation of direct dyes with silica gel ;2. Taking advantage of proof salt and high hydrophilic property of the silica gel and the carboxymethyl cellulose inarch polysalt of the super water-absorbent resin recombination,this paper made use of the water-absorbent composite form the inorganic polymer, sequentially advanced water-absorbent velocity and capacity of polymer water-absorbent resin in the brine.

利用具有良好耐盐和高亲水性能的硅凝胶与羧甲基纤维素接枝聚丙烯酸盐的高吸水树脂进行复合，制备出无机高分子的硅凝胶-羧甲基纤维素接枝聚丙烯酸盐耐盐高吸水复合材料，从而提高了高分子吸水树脂在盐水中的吸收能力及吸收速度，研究了复合材料的吸盐水性能，通过扫描电子显微镜观察了复合材料表面的微观结构，初步探讨了硅凝胶-羧甲基纤维素接枝聚丙烯酸盐耐盐高吸水复合材料的吸盐水机理。

The hydrophobic monomers such as glycidyl octyl dimethylammonium chloride, glycidyl dodecyl dimethylammonium chloride, glycidyl tetradecyl dimethylammonium chloride was applied to the hydrophobic modification of two kinds of sodium cellulose sulfate in isopropyl alcohol under 65℃.The success of synthesis of a kind of novel amphoteric surfactant by FT-IR and NMR. 3. By the measuring surface tension of all kinds of amphoteric polymeric surfactants based on cellulose, the critic micelle concentration was obtained such as 0.4wt%、0.3wt%、0.25wt% and corresponding surface tension was about 30mN/m

通过动态接触角测量仪确定了各种纤维素表面活性剂的表面张力和临界胶束浓度，结果表明该类表面活性剂可与小分子表面活性剂的降低表面张力的能力相媲美，最低可达28.41 mN/m，随着疏水基中碳链的增长，降低表面张力的能力下降，而临界胶束浓度从0.4wt%相应降低0.25wt%；应用环境扫描电镜确定其不同浓度胶束形态，结果表明在较低浓度下形成棒状单分子胶束，随着浓度的升高，单分子胶束逐渐聚集成树枝状胶束，进一步提高浓度，则聚集成网状结构；此外，采用了高级流变仪对其溶液的流变性质进行了研究，结果表明其溶液属于剪切变稀流体，是高分子溶液特有的性质。

The grafting effect and mechanism was charac- terized by FTIR,The heat stability of unvulcanized and dynamical mechanical proper- ty of vulc- lcanizates of SBR and SBR-g- were tested by TG and DMA respectively. medium-resistance properties of SBR and SBR-g- vulcan- izates were also investigated.The results showed that addition of St accelerated GMA grafting onto SBR and control the decomposition of SBR. When the conditions were GMA/St/DCP was 8/4/0.3 and grafting temperature was 160℃.

结果表明，St对提高接枝率、抑制SBR的降解起到了积极的作用；SBR中聚丁二烯的α－H和双键共同参与了GMA/St熔融接枝反应；当SBR/GMA/St/DCP=100/8/4/0.3、接枝温度为160℃时，SBR的接枝率较高（23.78%），SBR–g–硫化胶的拉伸强度和撕裂强度比SBR硫化胶的分别提高了119%和27.4%；SBR–（GMA--co-St）未硫化胶的Tg比SBR未硫化胶的高，而耐热分解性能优于SBR未硫化胶；SBR–g–硫化胶在低温条件下的刚性增大、弹性降低、具有较低的内耗，在常温下的阻尼性能较高，但弹性性能保持较好；SBR–g–硫化胶的耐热稳定性以及耐非极性有机溶剂的性能优于SBR硫化胶。

Construction of cement concrete pavement will be a lot of horizontal and vertical joints, in order to protect the pavement and subgrade, to extend the service life of roads, need to use joint sealant, also known as sealant or caulking adhesive.

水泥混凝土路面建设中会有很多横向和纵向的接缝，为了保护路面和路基，延长道路的使用寿命，需要用到接缝密封胶，也称为填缝胶或嵌缝胶。

The passenger transportation special lines cross sector seamless line fixed axle warm design, the bridge the seamless line design, the rail expand and contract the regulator, the glued joint insulated rail joint design are dissected.

对客运专线跨区间无缝线路的锁定轨温设计、桥上无缝线路设计、钢轨伸缩调节器、胶接绝缘接头设计进行详细研究。

To form in plumbing by spreading solder with a piece of cloth or leather.

用胶粘剂把两个相邻的被粘物胶接在一起的部位。

To form in plumbing by spreading solder with a piece of cloth or leather.

两个被粘物主表面部分地叠合、胶接在一起所形成的接头。

Unremitting pursuit goal is to deVelop high-performance wood adhesive by utilizing lowcost corn starch. The starch treated by composite modifier is used for the main raw materials of wood adhesive API which has been used and starch-based API has been deVeloped because poor water-resistance of traditional starch adhesive didn\'t meet requirement of wood bonding. Using for wood glued-product with the different requirement of shearing strength has been successful.

利用廉价的玉米淀粉开发绿色高性能木材胶粘剂是人类不懈追求的目标，论文针对传统的淀粉胶粘剂因耐水性差不能满足木材胶接需要的难题，将淀粉进行复合变性处理后作为水性高分子-异氰酸酯木材胶粘剂主要原料进行应用，研制出淀粉基API木材胶粘剂。

Increase departmental cent in front mentioned head tail wheel, each bearing roller among, the adhesive bonding quality of leather belt itself...

提高各部分前面提到的头尾轮，中间的各个托辊，皮带本身的胶接质量等。。。

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。