PVC挤出机挤出黑色的料是怎么回事？一段正常，一段时黑色的

果果SVIP 2013-05-24 08:08:38 386 浏览

参与评论

登录后参与评论

全部评论(3条)

xzx203055 2013-05-25 00:00:00

可能是螺杆磨损了，塑化不好

赞(20)

回复(0)

评论

评论
登录后参与评论
Circe8727 2013-05-25 00:00:00

全黑还是带黑点？？

赞(12)

回复(0)

评论

评论
登录后参与评论
挽风低吟乐园 2013-05-26 00:00:00

温度过高有烧灼

赞(1)

回复(0)

评论

评论
登录后参与评论

热门问答

PVC挤出机挤出黑色的料是怎么回事？一段正常，一段时黑色的:

压延布一段有牢度一段没牢度是怎么回事:

pvc挤出机出料不稳定怎么回事？: 出软门帘时总是一会宽一会窄，还伴有花！

挤出机挤出的料总断是怎么了:

六色喷墨打印机缺黑色但在清洗喷头时黑色不吸墨怎么回事:

挤出机挤出pe塑料时老是发泡怎么回事:

铜电解，电解液产生黑色是怎么回事:

挤出机模具漏料是怎么回事:

气相的基线突然凹下去一段怎么回事。fid检测器:

MvR蒸发器蒸出的料有黑色的？:

液晶电视黑色的区域显示成黑色: 只要是显示黑色的地方的时候，他就偏红色了... 只要是显示黑色的地方的时候，他就偏红色了展开

生物显微镜观察标本时会一段模糊一段清晰吗:

单螺杆挤出机挤出外皮有颗粒是怎么回事:

pe料能在pvc挤出机上做吗?:

盐雾试验箱为什么不会正常喷雾盐雾试验箱Z近一段:

120挤出机每分钟能挤出多少公斤料:

什么是黑色ABS: 可能是一种塑料原料

帮忙翻译一段英语: Plant material and culture conditions have been described (7). Briefly， a diploid tissue culture line， WOO1C， of wild carrot， Daucus carota L.， was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2，4-dichlorophenoxy... Plant material and culture conditions have been described (7). Briefly， a diploid tissue culture line， WOO1C， of wild carrot， Daucus carota L.， was maintained in Murashige and Skoog medium supplemented with 0.1 mg of 2，4-dichlorophenoxyacetic acid (2，4-D). To regenerate plants from the culture， callus tissue was transferred to the same medium devoid of 2，4-D (embryogenic medium). All experiments were performed with cultures grown in liquid medium. For convenience， cultures grown in 2，4-D-containing medium are referred to as "callus cultures"， and those grown in medium without 2，4-D as "embryo cultures." The growth of callus cultures was measured by the sidearmturbidity method (7). The number of cells at any time point of growth was estimated from turbidity in a Klett-Summerson calorimeter and was expressed in arbitrary units. For example， Klett 100 corresponds to ="2 X 106 cells per ml. The relationship is linear up to Klett 150 in our Klett-Summerson colorimeter. Suspension cultures ofWOOLC cell line are normally maintained at cell densities between 106 and 107 cells per ml in 0.1 mg of 2，4-D per liter (high-density culture) in shake flasks. During a quantitative study on embryogenesis， we found that maximal embryo production can be achieved by first incubating the culture at high density in medium without 2，4-D for one generation time and then diluting it to 2-3 x 104 cells per ml (low-density culture). To compare cultures of comparable density， callus cultures and embryo cultures were subjected to the same procedure. To initiate low-density embryo or callus cultures， an 8-day-old high-density culture grown at the logarithmic phase was washed three times with fresh callus or embryogenic medium and resuspended at 8 x 105 cells per ml for one generation (3 days) in its corresponding medium. It was then diluted to 2 x 104 cells per ml; 20 ml of the culture was incubated in a plastic Petri dish (9 cm in diameter) at 240C. The morphogenetic events of the cultures were examined and photographed under a dissecting microscope. 请不要用google的那个，我看不懂~~ 展开

电焊防护眼镜为什么是黑色的a:

翻译一段纳米材料的摘要(1): Abstract Nanomaterials and nanotechnology have been hot issues during the recent decades. This thesis deals with the fabrication and engineering of novel nanomaterials with enhanced functionality， particularly nanocomposites and nanostruc... Abstract Nanomaterials and nanotechnology have been hot issues during the recent decades. This thesis deals with the fabrication and engineering of novel nanomaterials with enhanced functionality， particularly nanocomposites and nanostructured surfaces. The study includes two parts; in the first part， bulk transparent polymer-inorganic nanocomposites were produced by a novel synthesis method and its UV-absorption has been investigated. In the second part， nanostructured microporous surface layers， of copper， were fabricated by electrodeposition process and its effect on material’s performance for pool boiling has been investigated evaluated.In the first part of the thesis， bulk polymer-inorganic nanocomposites composed of poly(methylmethacrylate) (PMMA) and zinc compounds were prepared by an in situ sol-gel transition polymerization of zinc complex in PMMA matrix. The immiscibility of heterophases of solid organic and inorganic constituents was resolved by the in situ sol-gel transition polymerization of ZnO nanofillers within PMMA in the presence of dual functional agent， monoethanolamine， which provided strong secondary interfacial interactions for both complexing and crosslinking of constituents. Comprehensive characterization of the polymer-inorganic hybrid materials has been undertaken using a wide range of techniques; XRD， 1H NMR， FT-IR， TGA， DSC， UV-Vis， ED， SEM， TEM and HRTEM. The homogeneous PMMA-ZnO nanocomposites exhibited enhanced UV-sheltering effects in the entire UV range even at very low ZnO content of 0.02 wt%. 展开

5月突出贡献榜

推荐主页

PVC挤出机挤出黑色的料是怎么回事？一段正常，一段时黑色的

联系我们

关注我们