pva 中文意思是什麼

pva 解釋
1. polyvinyl acetate 聚醋酸乙烯酯。
2. polyvinyl alcohol 聚乙烯醇。

  1. The present work indicates the organic nf membranes and the inorganic nf membranes all have shortages, so develop composite nf membranes that have low cost, mechanically strong and thermally / chemically - resistant, easy to cleanout and good performances is a very important task. in this paper, the preparation of inorganic - organic composite nf membranes were presented. this composite comprise a porous sio2 / al2o3 support substrate, the pore diameters of which ranging from 10 to 15 nm, this inorganic support substrate having a polymer membrane which comprises an polyvinyl alcohol ( pva ) or polyamide ( pa ) densely deposited on at least one of the face surfaces thereof, the structural porosity of such pva and pa membrane ranging from 3 to 5 nm

    本論文以開發無機?有機復合納濾膜為出發點，首先在al _ 2o _ 3多孔微濾膜上利用溶膠?凝膠法制備sio _ 2 al _ 2o _ 3無機復合超濾膜作為無機?有機復合納濾膜的基膜；選用聚乙烯醇和聚酰胺為表面功能層材料，分別探討了以羥基丁二酸和磺基水楊酸為混合交聯劑，採用浸塗法制備了聚乙烯醇sio _ 2 ? al _ 2o _ 3復合納濾膜；以均苯二甲酰氯、哌嗪和二胺為單體，採用界面聚合法制備了聚酰胺sio _ 2 ? al _ 2o _ 3復合納濾膜，並對影響膜性能的諸多因素進行系統研究。
  2. Properties of electroresponsive pva paa hydrogels under an electric field stimulus

    水凝膠纖維的電刺激響應性能
  3. The table 1 is the pva of some engineering plastics

    表1為幾種工程塑料的pva值。
  4. Preparation and property of polycation pva

    季銨鹽烷基醚化陽離子聚乙烯醇制備及性能
  5. Theoretical simulation of pva coating using drop - tower technique

    塗層理論模擬研究
  6. Study of the preparation of pva composite nanofiltration membrane

    聚乙烯醇復合膜的制備
  7. Preparation and evaluation on pva polarizing film

    偏光膜的制備及性能研究
  8. Modified pva fiber high tenacity and high modulus pvacut fiber

    改性聚乙烯醇纖維高強高模
  9. Development of light - weight wool fabric with water - soluble pva

    利用水溶性纖維開發輕薄羊毛產品
  10. Preparation of pva - alginate - ca blends

    海藻酸鈣復合材料制備及性質
  11. Modified pva fiber ultra short staple

    改性聚乙烯醇纖維超短纖
  12. Investigation on the high strain rate properties of pva fiber bundles

    纖維束沖擊拉伸性能的實驗研究
  13. Thermosensitive pva - g - nipaam copolymers was prepared by grafting copolymerization of n - isopropylacrylamide nipaam onto poly vinyl alcohol in homogeneous system by

    研究了在均相體系中通過共輻射接枝法將nipaam接枝到pva上。
  14. It is also used as adhesion agent to replace starch. pva is widely used in textile, paper making, building materials, packing, glass, and medicine. good character of service has been displaying when it is used as textile warp size, fabric finishing agent, reagent and additive in polymerization for industry of fine chemicals, adhesion agent for construction coating, and packing material film

    聚乙烯醇是一種水溶性高分子聚合物，它具有化學性能穩定溶解性能良好粘著力大等優點，可用作聚合反應的乳化劑和分散劑，同時可取代澱粉等作為膠粘劑，廣泛應用於紡織造紙建築材料包裝玻璃醫藥等行業，在作為紡織用經紗漿料織物整理劑精細化工用聚合物助劑建築塗料用粘合劑以及製成薄膜後作為包裝材料等方面，日益顯示出其良好的使用性能。
  15. It is also used as adhesion agent to replace starch. pva is widely used in textile, paper making, building materials, packing, glass, and medicine. sound character of service has been displaying when it is used as textile warp size, fabric finishing agent, reagent and additive in polymerization for industry of fine chemicals, adhesion agent for construction coating, and packing material film

    聚乙烯醇pva是一種水溶性高分子聚合物，它具有化學性能穩定溶解性能良好粘著力大等優點，可用作聚合反應的乳化劑和分散劑，同時可取代澱粉等作為膠粘劑，廣泛應用於紡織造紙建築材料包裝玻璃醫藥等行業，在作為紡織用經紗漿料織物整理劑精細化工用聚合物助劑建築塗料用粘合劑以及製成薄膜後作為包裝材料等方面，日益顯示出其良好的使用性能。
  16. A comparison of pcp ( pentachlorophenol ) degradation was made in micro - aeration and anaerobic conditions with three series of batch experiments : ( 1 ) anaerobic granular sludge and the mixed isolated aerobic bacteria were co - immobilized with pva ( polyvinyl alcohol ) and sodium alginate by means of freeze ; ( 2 ) isolated aerobic bacteria were first immobilized with pva and sodium alginate and then mixed with anaerobic granular sludge ; and ( 3 ) isolated aerobic bacteria were directly added in anaerobic granular sludge

    摘要將氯酚優勢好氧菌與厭氧顆粒污泥以三種不同方式組合： （ 1 ）以聚乙烯醇和海藻酸鈉為載體，採用冷凍法將氯酚優勢好氧菌和厭氧顆粒污泥進行混合固定； （ 2 ）將氯酚優勢好氧菌單獨固定后再與厭氧顆粒污泥混合； （ 3 ）將氯酚優勢好氧菌直接投加到厭氧顆粒污泥。
  17. The results show that pva - dfrccs can lighter the concrete, develop the compression / flexural / tensile splitting strength and flexural toughness, decrease the deformation of both dry shrinkage and autogeneous shrinkage and decrease the permeability of chloride ion. experimental results reveal as well that attapulgite can improve significantly properties of interface and optimize properties of dfrccs

    研究結果表明這種新材料能夠減輕材料自重，增進材料的抗壓、抗折、劈裂抗拉和抗彎強度，較好地抑制纖維材料中的乾燥收縮和自收縮現象，提高纖維材料的氯離子抗滲性。
  18. The major products of our company includes ironing boards, clothes racks, mops, pva sponges steps and so on

    主要產品有燙衣板，晾衣架，拖把， pva膠棉等日常家居用品。
  19. The company is ready to supply various kinds of water soluble pva fiber whose linear density ranges from 1. 1 dtex to 2. 5 dtex, whose length is from 35mm to 50 mm, and whose dissolving temperature in water is not higher than 93

    我公司可根據客戶需要，提供纖度1 . 12 . 5dtex長度3550mm的各種水溶性聚乙烯醇纖維，水中溶解溫度93 。
  20. Our main products : dust mop, wet mop, pva mop, drying mop, microfibre mop, sweeper, wool duster, ostrich duster, turkey duster, electrostatic duster, lint brush, sticky roller, car brush, pet hair pic - up lint mitt, broom, dustpan, toilet brush, windows wiper, magic sponge, cleaning slippers etc

    公司主要產品有：家用和商用塵推、水拖把、膠棉拖把；地板擦；超細纖維系列家用拖把；汽車清潔系列、汽車刷；玻璃刮、羊毛撣、靜電撣；掃帚、吸塵埃（打蠟）劑；商用（家用）畚箕；衣刷、衛生清潔用刷；園藝用品等。
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