What is the indirect production of SMC insulating paperboard?

What does the direct production of insulating paperboard mean? As it becomes more widely used in the application field, the requirements of different industries are also constantly improving, so we continue to need to improve the specific functions and uses of the product according to the actual situation, so what is the so-called direct production? Woolen cloth? Next, let’s briefly understand from its production process.

(1) Use thermosetting resin and fiber fabric (such as glass cloth cotton cloth, insulating cardboard, etc., also called filler) as raw materials, and impregnate the resin on the filler with a sizing machine to form a sizing glass cloth, sizing cotton cloth or sizing Paper, referred to as material.

(2) Cut these materials to the required size, sort them according to different types, and stack (stack) them into a certain thickness according to different specifications, which is called a piece of material. This process is called material selection and board matching.

(3) Lift an iron plate as an insulating backing plate, and then spread copper wire mesh, paper cushioning, and stainless steel plate on the backing plate flatly, and then spread a piece of material, then a stainless steel plate, and a piece of material– That is, the material is sandwiched between two stainless steel plates), and several pieces are laid in sequence, and then pad paper, copper wire mesh and iron cover plate are laid. This is the first floor.

(4) Stabilize several layers and send them to the hydraulic press for heating and pressurizing (including pre-warming, hot pressing, venting, water cooling, etc.).

(5) After a certain period of time, after the thermosetting resin in the material has cured, remove them from the hydraulic press, and then lift down the iron cover plate, copper wire mesh, paper pad, stainless steel plate, etc., and take out the materials. At this time, the insulating cardboard The material is hot pressed into a laminated board with electrical insulation function.

Different types of boards, thermosetting resins, and different fillers are used to produce various types of boards. For example, epoxy phenolic glass cloth boards produced with epoxy resin plus phenolic resin and glass cloth are called epoxy phenolic glass cloth boards, which are commonly referred to as glass fiber reinforced plastics. One type; those made of phenolic resin and cotton cloth are called phenolic cloth boards; those made of phenolic resin and insulating materials are called phenolic paperboards and so on.