Mole ratio is the key factor that influenced the formal de hyde content of urea resin.
降低人造板甲醛释放量的关键在于使用低游离甲醛树脂胶。
The structure of modified urea resin, composition of fire retardant and its mechanism were discussed.
讨论了乙醇改性的脲醛树脂结构，以及防火剂的组成及其作用机理。
In this paper, the methods of the improvement on water resistance of urea resin wood adhesive were studied.
研究了改进胶合板用脲醛粘合剂的耐水性的方法。
The modifications of urea resin and phenolic resin by melamine, and the applications of modified melamine to coating and board are reviewed.
综述了三聚氰胺对脲醛树脂、酚醛树脂的改性以及改性三聚氰胺在涂料、板材等方面的应用。
A dilative transparent fireproof coatings were based on ethanol modified urea resin as binder, phosphoric acid and starch as fire retardant.
以乙醇改性的脲醛树脂为基料，磷酸和淀粉为防火剂制成膨胀型透明防火涂料。
Meanwhile, the resin of urea and formaldehyde is used for medium-density overlay (MDO), a combination of concrete and plywood, used in concrete moulds.
同时，尿素甲醛的树脂用于制造中密度板(MDO)，这是一种混凝土和夹板的组合体，通常用于混凝土模具中。
The storing stability of urea formaldehyde resin adhesive with the change of PH value is researched in attempt to guide the production and imporove the application for products.
对脲醛树脂胶的贮存稳定性随p H值的变化进行研究，以指导生产，提高产品的适用。
The abamectin microcapsules were prepared by in-situ polymerization process in this work, with melamine-formaldehyde resin and urea-formaldehyde resin as wall materials respectively.
采用原位聚合法，分别使用脲醛树脂和蜜胺树脂两种囊壁材料对生物农药-阿维菌素进行了微胶囊包覆。
An amine or amino resin is the alkylated reaction product of urea or melamine and formaldehyde.
含胺基或氨基树脂是尿素或三聚氰胺和甲醛烷基化反应产品。
The three main adhesives for artificial plate are urea-formaldehyde resin adhesive, phenolic-formaldehyde resin adhesive and melamine-formaldehyde resin adhensive.
人造板工业使用的三大胶是脲醛树脂胶、酚醛树脂胶和三聚氰胺-甲醛树脂胶。
This paper aimed at the problem of moisture-resistance performance of finish foil, adopting melamine modified urea formaldehyde impregnated resin to make MUF.
本文采用三聚氰胺对脲醛树脂进行改性，合成三聚氰胺改性脲醛树脂（MUF），解决预油漆纸耐潮湿性的问题。
With sulfonated melamine and urea as monomers and acids as catalysts, the synthesis of sulfonated melamine urea formaldehyde resin is carried out.
以磺化三聚氰胺和尿素为单体，在酸催化下，合成磺化三聚氰胺尿素甲醛树脂。
The modified PVAc emulsion adhesive with Urea melamine formaldehyde(UMF) resin is studied.
对脲-三聚氰胺-甲醛树脂改性白乳胶进行了研究。
First, epoxy resin reacts with melamine and urea under certain conditions, and then the product reacts with formaldehyde.
环氧树脂先与三聚氰胺和脲在一定条件下反应，然后再与甲醛反应。
A novel method for producing urea formaldehyde resin with intensive viscidity, high solid content and low toxicity is introduced in this report.
介绍一种粘结强度大、固含量高、低毒环保型的脲醛树脂粘合剂的合成方法。
The new urea formaldehyde resin for plywood was developed, by using a specifically designed, advanced synthesis process with two modifiers added in its final stage.
此种新开发的脲醛树脂，采用特定的先进合成工艺和加入两种改性剂研制而成。
The field experiments were carried out to investigate the effects of urea and resin coated urea on yield and economic benefit of corn planted in aeolian sandy soil and irrigated desert soil.
田间试验对比研究了树脂包衣尿素和普通尿素在灌漠土和风沙土两种土壤上种植玉米的肥料投入产出效益和产量差异。
In this paper, p-methylphenyl sulphonylamine was used to modify urea formaldehyde resin with low molar ratio.
用对甲基苯磺酰胺改性低克分子比的脲醛树脂。
As a matrix of wood composite, urea-formaldehyde resin has been used extensively, and the relationship between its structure and performance is also one focus for enterprises.
作为木质复合材料基体而被广泛使用的脲醛树脂，其结构与性能之间的关系，一直是企业界所关注的焦点。
This artical presents the productive technology and formulae of urea-formaldehyde resin used in bamboo mould plate.
本文对竹胶板模板用脲醛树脂胶的生产工艺和配方试验研究做了介绍。
Base on this, the influence of urea formaldehyde resin on the water resistance of MOC was investigated through an experimental study with strength and water-resistance as evaluation indexes.
在此基础上，本文通过试验研究，以氯氧镁水泥的试块强度和耐水性为指标，探讨脲醛树脂对氯氧镁水泥耐水性的影响。
Effects of purity of raw materials, molar ratio of urea and formaldehyde, reaction temperatures and reaction time on the properties of urea-formaldehyde resin adhesive were studied.
研究了树脂合成过程中原材料纯度、尿素和甲醛的摩尔比、反应温度以及反应时间等对粘度和固含量等性能的影响。
Production theory and processes of modified urea-formaldehyde resin used in oil well water shutoff and some influence on product performance resulted by main factor in the production are introduced.
介绍了适用于油田油井堵水用的改性脲醛树脂的生产原理和工艺，以及生产中的关键因素对产品性能的影响。
The urea-formaldehyde resin was made from industrial 36% formalin and 46% N carbamide in the laboratory. The urea-formaldehyde resin was used to imbed the insect specimens.
本文探讨了在实验室条件下利用工业用36 ％甲醛和含氮46％ 农用尿素合成脲醛树脂包埋昆虫标本的方法。
Adding amylum or oxidized amylum in the synthesis process of low toxic urea-formaldehyde resin can improve pre-press capability and bonding strength of plywood.
在低毒脲醛树脂胶粘剂合成过程中加入淀粉或氧化淀粉，能有效地改善胶合板板坯的预压性能和胶合板的胶接强度。
A kind of modified low toxic urea-formaldehyde resin was synthesized.
经过大量试验合成了一种低毒改性脲醛树脂。
This paper describes intensity property of joined timber with urea-formaldehyde resin.
本文描述了脲醛树脂胶指接材的强度性能。
Two parts were included in this study, Microencapsulation of rose perfume with urea-formaldehyde resin wall were prepared by in-situ method in the first part.
本文研究工作分为两部分，第一部分是用原位聚合法以脲醛树脂为壁材制备缓释型香精微胶囊。
The effect of ethanol, urea-formaldehyde resin, melamine and flame retardant of resistance to water and fire was studied.
研究了乙醇、脲醛树脂、三聚氰胺和阻燃剂对涂料耐水、阻燃性能的影响。
The effect of ethanol, urea-formaldehyde resin, melamine and flame retardant of resistance to water and fire was studied.
研究了乙醇、脲醛树脂、三聚氰胺和阻燃剂对涂料耐水、阻燃性能的影响。
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