Explain the basic knowledge about fiberglass cloth!

 

  Fiberglass fabric reinforced composites are divided into high alkali cloth, medium alkali cloth and alkali free cloth according to the alkali content. The lower the alkali content, the better the flexural and tensile strength. These types of cloths can be distinguished according to their electrical conductivity. The high alkali cloth is a conductor and can be used as a wire, the medium alkali cloth is a semiconductor, and the alkali free cloth is an insulator.

  The current optical fiber for signal transmission is chiltern glass fibre transmission, which belongs to high alkali cloth. Currently, medium alkali cloth is suitable for magnesite cement building materials, and alkali free cloth is suitable for circuit board and electronic grade.

 

 

  The performance and characteristics of glass fiber cloth

1. Good chemical stability. Alkali resistance, acid resistance, water resistance, cement corrosion resistance, and other chemical corrosion resistance; strong adhesion to resin, soluble in styrene, etc.
2. High strength, high modulus and light weight.
3. Good dimensional stability, stiff, flat, not easy to shrink and deform, and good positioning.
4. Good impact resistance. (Because of the high strength and good toughness of the mesh)
5. Anti-mildew and insect-proof.
6. Fire prevention, heat preservation, sound insulation and insulation.

 

 

 

  The varieties of glass fibre mesh: Fiberglass facade mesh, the inner wall insulation glass fiber mesh is made of medium alkali or alkali-free glass fiber mesh as the base material and then coated with modified acrylate copolymer glue.
It has the characteristics of light weight, high strength, temperature resistance, alkali resistance, waterproof, corrosion resistance, crack resistance and dimensional stability. It can effectively avoid the overall surface tension shrinkage of the plastering layer and the cracking caused by external force. The thin bidirectional fiberglass cloth is often used for wall renovation and interior wall insulation.

 

Surface treatment of glass fiber cloth

First: post-processing

In principle, this method is used for surface treatment of coated fibreglass fabric prepared by using textile sizing agent before being used to make FRP. This method needs to first remove the textile-type sizing agent on the surface of the glass fiber cloth, and then go through various processes such as dipping, washing and drying in the treatment agent solution to coat the surface of the composite fiber with a layer of treatment agent. However, each process of the surface treatment of this glass fiber cloth requires special equipment to operate, and the initial investment is large, but the treatment effect is good and relatively stable. Therefore, this glass fiber cloth surface treatment method is a treatment method commonly used at home and abroad. ,

Second: pretreatment method

The pre-treatment method is different from the post-treatment method. This treatment method changes the formulation of the sizing agent so that it can meet the various requirements of wire drawing, demerging and weaving processes at the same time, without hindering the resin's effect on the cloth for fabric. Wetting and bonding of fiberglass. Therefore, compared with the post-treatment method, the surface treatment of this glass fiber cloth eliminates the need for complicated processing technology and equipment, is easy to use, and avoids the loss of glass fiber strength caused by heat treatment.

Third: Migration method

In the migration method, the chemical treatment agent is directly added to the resin glue for overall infiltration, and the treatment agent is applied to the fibers of the glass fiber cloth while dipping, and the treatment agent is used from the resin glue to the alkali resistant fiber glass. The "migration" of the mesh surface interacts with the fiber surface, resulting in a coupling effect during the resin curing process.

Hebei Yuniu Fiberglass Manufacturing Co., Ltd. is a fiberglass manufacturer with more than 16 years of experience and 8 years of export experience, providing you with high-quality fiberglass cloth.