Driven by the national policy of "energy saving and emission reduction", the requirements of heat insulation and energy saving in various fields are higher and higher. Aluminum foil glass fiber cloth has good reflection performance, which can effectively solve the dominant heat radiation loss in the process of heat transfer, and has remarkable energy saving effect.
At present, some conventional products of the same kind have low temperature resistance. They are usually made of polyethylene and then used as the veneer of thermal insulation materials. In some high-temperature occasions, such as high-temperature steam pipeline, there are high requirements for the temperature resistance of aluminum foil fiberglass cloth, which can not be realized by conventional products. At the same time, the structure of conventional products is single, and the package in coils is not convenient for on-site construction, especially for the construction of thermal insulation pipeline. The on-site thermal insulation work is large, the material is wasted, the package form is complex and not firm, and it is easy to be corroded by damp on site Air tightness causes the moisture in the insulation material can not be released, and the insulation quality can not be guaranteed.
However, the existing aluminum foil glass fiber cloth has some problems, such as poor temperature resistance, poor corrosion resistance, poor air permeability and inconvenient on-site construction. A new type of aluminum foil glass fiber cloth includes aluminum foil and glass fiber cloth. The aluminum foil and glass fiber cloth are compounded by flame retardant adhesive. The surface of aluminum foil is coated with SiO2 coating. The aluminum foil glass fiber cloth is provided with air holes through the aluminum foil, glass fiber cloth and SiO2 coating. The two ends of the aluminum foil glass fiber cloth are sewed with glass fiber thread to make buckles.
The aluminum foil is calendered single-sided smooth aluminum foil, and the thickness of the calendered single-sided smooth aluminum foil is 6.5 ~ 20um. The glass fiber cloth is made of medium alkali glass fiber cloth. Flame retardant adhesive is water-soluble adhesive, its mass components are: styrene 10% ~ 30%, crosslinking agent 0.3% ~ 0.6%, acrylate 35% ~ 50%, emulsifier 0.1% ~ 1.5%, vinyl acetate 12% ~ 20%, distilled water 2% ~ 5%, the dosage of flame retardant adhesive is 8 g / m2 ~ 30 g / m2. The thickness of SiO2 coating is 0.05 um ~ 0.08 um. The holes are arranged in a square array with a diameter of 6 mm, and the center distance between adjacent holes is 100 mm. There are two pairs of clasps at both ends, which are sewn on the aluminum foil glass fiber cloth with glass fiber thread, and the width of the clasp is 50 mm. The width of the finished aluminum foil fiberglass cloth is 0.5m, and the length is 0.95 times of the circumference C of the external surface of the pipe insulation, and then rounded after adding 50mm.
According to the different proportion of raw materials, aluminum foil glass fiber cloth can be divided into common type, medium temperature resistant type, high temperature resistant type and ultra high temperature resistant type.
Common type: aluminum foil 8% ~ 10%, glass fiber cloth 82% ~ 86%, flame retardant adhesive 6% ~ 8%, SiO2 coating 0.3% ~ 0.5%.
Medium temperature resistant: aluminum foil 12% ~ 15%, glass fiber cloth 78% ~ 83%, flame retardant adhesive 8% ~ 10%, SiO2 coating 0.4% ~ 0.6%.
High temperature resistant type: aluminum foil 13% ~ 16%, glass fiber cloth 76% ~ 80%, flame retardant adhesive 9% ~ 11%, SiO2 coating 0.5% ~ 0.7%.
Ultra high temperature resistant: aluminum foil 15% ~ 18%, glass fiber cloth 74% ~ 78%, flame retardant adhesive 10% ~ 12%, SiO2 coating 0.6% ~ 0.8%.