FR-4环氧板绝缘的温度等级一般分为A级、E级、B级、F级、H级、C级、N级、R级。一般电机的绝缘等级较多采用E级和B级绝缘。机的热分级是指其所用绝缘材料的耐热等级，分A、E、B、F、H、C、N、R级。允许温升是指电动机的温度与周围环境温度相比升高的限度。 FR-4环氧板温度等级：绝缘的温度等级A级E级B级F级H级C级N级R级； 最高允许温度（℃）105 120 130 155 180 200 220 240； 绕组温升限值（K）60 75 80 105 125 135 150 170； 性能参考温度（℃）80 95 100 120 145 155 170 190。 FR-4环氧板加工在发电机等电气设备中，绝缘材料是最为薄弱的环节。绝缘材料尤其容易受到高温的影响而加速老化并损坏。不同的绝缘材料耐热性能有区别，采用不同绝缘材料的电气设备其耐受高温的能力就有不同。因此一般的电气设备都规定其工作的最高温度。
FR-4 is a code name for a flame-resistant material grade. It means a material specification of which the resin material must be self-extinguishing after being burned. It is not a material name, but a material grade, There are many types of FR-4 grade materials used in the board at the… Continue Reading Introduce the manufacturing method and material of fr4 epoxy fixture
The fiberglass board and the cold-punching board are used for the soft-packing base layer, and the outer fabric is covered with fabric, leather, etc., it is made into a beautiful wall surface and ceiling decoration. The application is very wide, and it can have sound absorption, sound insulation and heat… Continue Reading Talk about the characteristics and application of FR-4 glass fiber board
The aluminum substrate is similar to the single-panel process of the FR-4 epoxy fr4 board, mainly because there is no electroplating process. FR-4 epoxy board is a code name of fire-resistant material. It means a material specification that the resin material must be self-extinguishing after being burned. It is not… Continue Reading What is the difference between the process conditions of FR-4 epoxy board and aluminum substrate?
The cold-pressed sheet is made of tung oil modified phenolic resin impregnated with bleached wood pulp paper by hot pressing. It has good punching and electrical properties, and it is mainly used for carbon film potentiometers, resistor parts and small electrical insulation parts. . Features: high mechanical and dielectric properties,… Continue Reading What is the cold-pressed sheet made of ?
In the hot weather in summer, everyone is afraid of avoiding the heat. Although the article discusses cold-pressed sheet and heat insulation sheet, the two kinds of materials are not for people to use in summer, but for insulating materials. let us take a look at the differences in the… Continue Reading Analysis of performance comparison between cold-pressed sheet and heat insulation sheet
Generally, epoxy resin sheet manufacturers on the market are phenolic epoxy sheet, with yellow color, generally it is not used as a hard circuit board substrate, but used for electrical insulation. FR4 is a pure epoxy sheet of NEMA standard. Its normal color should be dark green, which is the… Continue Reading Epoxy sheet manufacturers introduce the difference between glass fiber sheet, epoxy sheet and FR-4 sheet
First, fiberglass cold stamping sheet (FR4, single-sided, double-sided, multi-layer PCB circuit board, impedance board, blind buried hole board), it is suitable for electronic digital products such as computers and mobile phones. There are many kinds of glass fiber sheet, we will first look together; FR-4 is also known as fiberglass… Continue Reading In-depth understanding of the characteristics of cold stamping sheet and fiberglass panels
Fiberglass board FR-4 is a code name for the grade of fire resistant epoxy board. It means a material specification that the resin material must be self-extinguishing after being burned. It is not a material name but a material grade, Therefore, there are many types of FR-4 grade materials used… Continue Reading Fiberglass board, Epoxy board and FR-4 epoxy board manufacturer
Although I have talked a lot about the performance characteristics and uses of FR4 epoxy board, it is not very comprehensive. Today we mainly give a detailed explanation of the characteristics of the FR4 epoxy board. Insulation: Its vertical layer electrical strength (in transformer oil of 90±2 °C, thickness 1mm):… Continue Reading What are the characteristics of FR4 epoxy board?