查询词典 PVC

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。

Seethrough PVC folder sticked on the top of carton box for inserting the packing list.

纸箱上粘一个透明PVC文件夹，用来放装箱单。

Weights shown for foot valves are actually those for PVC F.V.

所显示的底阀重量实际上是适用于PVC材质的F.V。

We are one of the largest exporters and manufactures of wire mesh in China, specialized in selling all kinds of metal wire mesh product, including welded wire mesh , stainless steel wire mesh, expanded metal mesh, plastic plain netting, window screen, crimped wire mesh, chain link fence, perforated metal mesh, wire mesh fences, nylon netting, hexagonal wire mesh, conveyer belt etc., also offering metal wire products, such as barbed wire, galvanized wire, PVC coated wire, copper wire etc.

我们是最大的出口商之一，在中国网丝生产，销售金属丝网产品，包括电焊网，不锈钢丝网，钢板网，塑料平网，窗纱，轧花网各类专门，勾花网，冲孔网，护栏网，尼龙网，六角网，输送带等，还提供诸如带刺铁丝，镀锌铁丝金属丝产品，PVC涂塑丝，铜丝等，广泛应用于石油，化工，食品，医药，建筑，家禽和牲畜等，我们将每年销售超过五〇〇〇〇〇〇〇平方米丝网。

Calcium dimer acids and zinc dimer acids were prepared by double decomposition reaction,and their structures were identified by IR.Their effects on heat stability of PVC were tested by way of Congo Red Method and Heating Method.Calcium dimmer acids and zinc dimmer acids were compared with traditional calcium stearate and zinc stearate.

通过复分解法制备了二聚酸钙和二聚酸锌，并通过红外检测证明了其结构；采用刚果红法、热烘法研究了二聚酸钙和二聚酸锌对PVC的热稳定作用，并与传统的硬脂酸钙、硬脂酸锌热稳定剂作了比较。

Melbourne, Australia, February 27, 2007 – ABB, the leading power and automation technology group, today announced that it has won a $2 million order to upgrade the Control System at Australian Vinyls PVC resins plant located in Laverton, Victoria.

墨尔本2月27日消息——全球领先的电力和自动化技术集团ABB公司今天宣布赢得一份价值2百万美元订单，升级澳大利亚Vinyls公司位于维多利亚州拉弗顿PVC树脂厂的控制系统。

Each PVC has associated with it a CIR.

每一条PVC都是通过约定信息速率来相互联系的。

Using 305ester and other additives,instead of some TOTM to produce 105 ℃ PVC cable material for ship s,the electrical properties of the cable material and after immersed-in-water were tested.

用305酯增塑剂与其他添加剂配合使用，部分取代TOTM生产船用105℃PVC电线电缆料，并对其电性能、浸水后电性能等进行测试分析。

In order to meet the imminent implementation of new EU environmental regulations, the substrate of high-quality imported PVC material and PET, PS, PP, PC, such as environmental protection material, ink imported Apollo ink, magnetic stripe magnetic imported German Chur.

为适应欧盟即将实施的新的环保条例，基片采用进口的高品质PVC材料和PET、PS、PP、PC等环保材料，油墨采用进口阿波罗油墨、磁条采用进口德国库尔磁。

FRs can strongly suppress the elimination of HCl, raise the on-set temperature of decomposition of PVC, promote the crosslinking during decomposition, reduce the total output of aromatic compounds, increase the gel of condensed phase and char residue, the char residue is loosened. The configuration of FRs has no changed.

这类阻燃抑烟剂能抑制PVC热分解脱HCl反应，提高HCl释放的起始温度，在热分解过程中促进分子间形成交联键，使裂解气相产物中芳烃化合物含量减少，凝聚相凝胶含量增大，残炭量提高，残炭物结构呈松散状态，阻燃抑烟剂在热分解过程中化学结构保持不变。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。