酚醛树脂

The results available now indicate that glass-like carbon synthesized from phenolic resin is a non-graphitizing carbon, and consists of both sp 2-hybridized carbon atoms that form imperfect graphite structure and sp 3-hybridized carbon atoms that are due to the presence of disordered carbon; and in the fullerene-related structure of glass-like carbon, there exist some pentagons and heptagons carbon rings.

玻璃炭作为一种特殊炭材料已广泛应用于许多领域，其制备、性质、应用以及基本结构的研究已经取得了很大的进展，已有的研究结果表明酚醛树脂基玻璃炭是一种典型的非石墨化炭材料，由 sp2杂化态碳原子和 sp3杂态碳原子组成，且在其类富勒烯结构中存在五元环和七元环。

Unsaturated polyester resins are the most widely used resin type for composites, comprising in excess of 80% of all thermoset resins (others being epoxies, phenolics, acrylics, imides, and urethanes).

不饱和聚酯树脂是复合材料使用树脂类型中应用最广泛的一种，也是热固性树脂最常用的一种（其它种类热固性树脂包括环氧树脂、酚醛树脂、丙烯酸树脂、酰亚胺树脂以及氨基甲酸乙酯）。

The research of phenol-formaldehyde resin modified with lac can be expected to widen the application of the lac and enlarge the utilization of the renewable resource.

研究了对紫胶改性酚醛树脂胶粘剂的固化时间、接胶合板的粘接强度和甲醛释放量进行了测定。

The main structure of Phenolic resin curing is a three-dimensional network linked by methylene between phenols.It is shown in the process of thermal degradation that the thermal degradation of phenols and methylenes,and degradation product of gas small-molecule is a little;While the character of the epoxy resin molecule structure is that the milecule chains contain lively epoxy group,which can be at the end ,middle of the molecule or forms rings structure.

酚醛树脂固化物的主要结构为苯酚之间通过亚甲基连结的一种三维体型网络，因此在热降解过程中主要表现为酚基和亚甲基的热降解，降解后气态小分子产物很少；而环氧树脂的分子结构是以分子链中含有活泼的环氧基团为其特征，环氧基团可以位于分子链的末端、中间或成环状结构。

Woven Rovings are compatible with many resin systems such as polyester,vinyl ester, epoxy and phenolic resins.

无捻粗纱布适用于各种树脂增强系统，如不饱和聚酯树脂，乙烯基树脂，环氧树脂和酚醛树脂等。

E-Glass Woven Rovings are compatible with many resin systems such as polyester, vinyl ester, epoxy and phenolic resins.

无碱无捻粗纱布适用于各种树脂增强系统，如不饱和聚酯树脂、乙烯基树脂、环氧树脂和酚醛树脂等。

Methods: Thirty extracted human molars whose pits and fissures on the occlussal surface had been inoculated with Escherichia coli were randomly divided into three groups: group A was treated with newly confected phenol-formaldehyde resin which resinified the dental fissure contents,group B was sealed Bis-GMA resin in pits and fissures and group C as the control group was only treated by cleanin...

选择30颗人离体磨牙，在咬合面点隙裂沟接种大肠杆菌，随机分为3组；A组以新配制的酚醛树脂使点隙裂沟内容物树脂化，B组以成品Bis-GMA封闭剂作点隙裂沟封闭，C组仅进行表面清洗作为对照组；各组分别沿裂沟点隙处片切牙齿，放入LB培养基培养，观察大肠肝菌生长情况。

Methods: Thirty extracted human molars whose pits and fissures on the occlussal surface had been inoculated with Escherichia coli were randomly divided into three groups: group A was treated with newly confected phenol-formaldehyde resin which resinified the dental fissure contents, group B was sealed Bis-GMA resin in pits and fissures and group C as the control group was only treated by cleaning.

选择30颗人离体磨牙，在咬合面点隙裂沟接种大肠杆菌，随机分为3组；A组以新配制的酚醛树脂使点隙裂沟内容物树脂化，B组以成品Bis-GMA封闭剂作点隙裂沟封闭，C组仅进行表面清洗作为对照组；各组分别沿裂沟点隙处片切牙齿，放入LB培养基培养，观察大肠肝菌生长情况。

This was the main stage of PF resin pyrolyzing and its total mass loss was 19.57%.

酚醛树脂在氮气保护下的整个热解过程均需吸收热量。

At the second stage, the maximum mass loss rate occurring at 537.2 degrees C was 0.151 mg/mm. This was the main stage of PF resin pyrolyzing and its total mass loss was 19.57%.

第二阶段，质量损失速率在537.2℃时达到最大值0.151mg/min，共失重19.57%，这是酚醛树脂热分解的主要阶段，释放出H2O、低分子酚类物质、CO2、CH4等低分子烃和CO等热解产物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。