脲醛 的英文怎麼說
中文拼音 [quán]-
Study on the stability of urea - formaldehyde microcapsules
脲醛樹脂微膠囊穩定性研究Wood adhesives - urea - formaldehyde, phenol - formaldehyde and melamine - formaldehyde resins
木材工業膠粘劑用脲醛酚醛三聚氰胺甲醛樹脂Wood adhesives : urea - formaldehyde, phenol - formaldehyde and melamine - formaldehyde resins
木材工業膠粘劑用脲醛酚醛三聚氰胺甲醛樹脂The tea waste powder with different sizes as an additive was used to urea - formaldehyde ( uf ) resin, and the effects of the tea waste powder sizes and amount on the free formaldehyde content of uf resin, the formaldehyde emission, and hood strength of uf resin hooded plywood were studied in this paper
摘要將不同顆粒度的茶葉廢料粉添加到脲醛樹脂膠中，研究了茶葉廢料的顆粒度、加入量等對脲醛樹脂膠黏劑的游離甲醛含量、黏接膠合板的甲醛釋放量及膠合強度的影響。The experimental results indicated that the tea waste powder as an additive to uf resin could reduce its free formaldehyde content and reduce the formaldehyde emission of uf resin bonded plywood ; the tea waste powder with much less size was easily mixed with uf resin and acted much more effective ; the tea waste as an additive to uf resin in a proper amount did nut decrease the bond strength of plywood
實驗結果表明，茶葉廢料作為填料添加到脲醛樹脂膠黏劑中，能夠降低其游離甲醛含量以及其黏接膠合板的甲醛釋放量；茶葉廢料顆粒度越小，與脲醛樹脂混合性越好，消除甲醛效果越顯著；茶葉廢料的適量加入不會降低膠合板膠合強度。Study on reducing content of free formaldehyde of uf
降低脲醛樹脂游離甲醛含量的探討Study on regeneration of ureaformaldehyde gel
脲醛樹脂凝膠再生研究Synthetic method s improvement and mechanism of the urca formaldehyde resin
脲醛樹脂合成方法的改進與機理探討Production of the lower cost urea - formaldehyde resin with environmental protection
低成本環保型脲醛樹脂的研製Studies on immobilization of - cyclodextrin based onto urea - formaldehyde resin
環糊精脲醛樹脂的合成及其性能研究Study on using nanometer sio2 and caco3 for the free formaldehyde content of the uf resin
3改性脲醛樹脂甲醛含量及性能研究Advances in study and application of additives for urea - formaldehyde resin adhesive
脲醛樹脂膠黏劑用添加劑的研究與應用進展Urea - formaldehyde resin
脲醛樹脂Uf urea formaldehyde
脲醛樹脂The urea - formaldehyde ( uf ) polymer / sio2 composite microspheres were prepared by polymerization - induced colloid aggregation ( pica ) method. the formation mechanism of composite microspheres is attributed to the fact that that urea and formaldehyde firstly undergo acid - catalyzed polymerization to form oligomers, and then the sol particles are adsorbed on the chain of oligomers by wan der walls force and hydrogen bonding. when the oligomers reach the critical chain length, they separate from solution due to phase separation
對復合微球形成機理的研究表明，尿素和甲醛在酸性條件下自身聚合可以形成高分子微球，在sio _ 2酸性溶膠中發生聚和反應時，隨著反應的進行，齊聚物不斷生成， sio _ 2膠體顆粒逐漸吸附在齊聚物分子鏈上，當聚合物鏈達到沉澱臨界鏈長時，由於相分離作用，從前驅物溶液中析出，同時sio _ 2膠體顆粒均勻的分佈在脲醛聚合物網路中，隨之沉澱出來，形成脲醛sio _ 2復合微球。Uf foamed plastics
脲醛泡沫塑料Templates for major construction 2, 000 tonne plastic production technology transfer, low - cost, environmentally friendly type of plastic resins and thiourea aldehyde wave aldehyde production technology transfer and increased nianji " zhengshi card " indoor to agents - - formaldehyde by 15 yuan per kg doses ( no secondary pollution ) and the national cheng zhao agents
主要有建築模板專用膠2000元/噸生產技術轉讓、低成本、環保型脲醛樹脂膠及消醛增粘劑生產技術轉讓和「正始牌」室內去毒劑- -甲醛清除劑每公斤15元（無二次污染）並誠招全國各代理商。Plastics - urea - formaldehyde and urea melamine - formaldehyde powder moulding compounds uf - and uf mf - pmcs - part 3 : requirements for selected moulding compounds
塑料.脲醛和脲蜜胺酚醛粉末模塑化合物.第3部分:對所選模塑化合物的要求And the value drop to the lowest at ph = 0. 8. as the increase of heat treatment temperature, the pore size distribution peak of sio2 microspheres is very narrow, meanwhile the specific surface area is the smallest before 160 c. the polymer template is removed at 350 c, so the pore structure of sio2 particles has a big change which involve the increase of specific surface area and the broaden of pore size distribution peak. with the continuous raise of temperature the sio2 network will shrink little, as a result the average pore size will decrease, but the specific surface area has no obvious change
結果發現：二氧化硅膠體顆粒均勻分佈於脲醛聚合物網路中，煅燒去除有機模板后微球表面變粗糙，而粒徑沒有明顯變化； ph值較小時，復合微球中聚合物含量較大，而ph值較大時，得到復合微球結構鬆散，因此熱處理后的二氧化硅微球孔容及平均孔徑都較大，而在ph = 0 . 8時，得到最小值；武漢理工大學碩士學位論文隨著熱處理溫度的變化，小於160時，空分佈較窄，而比表面積較小，在350時，由於有機模板的去除，微球孔結構發生突變，比表面積明顯增大，而孔徑分佈變寬，溫度繼續升高時，二氧化硅網路發生收縮，平均孔徑變小而比表面積由於有機炭化物的完全去除沒有太大變化;微球中的微孔在熱處理過程中處于平衡狀態，分佈沒有太大變化。The new progress of urea - formaldehyde resin with low formaldehyde content and its wood - products with low formaldehyde emission
脲醛樹脂膠粘劑及其製品低毒化研究新進展分享友人