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2017

Brief introduction of glass fiber cloth used for fiberglass radome

Wuhan University of Technology has created a company specializing in the production of fiberglass radomes. This article gives a brief introduction to the fiberglass cloth used as the raw material of the radomes by our company. In addition to the alkali-free glass fiber untwisted coarse gauze (GB/T18370-2001) and E-glass fiber cloth for printed boards (GB/T18373-2001), the physical and chemical properties of other alkali-free glass fiber cloth are specified by JC/T170-2002 standard (see Table 1 below) and the tensile breaking strength (see Table 2 below).

Table 1

Product code	Organization type	Fabric density/(pcs/cm)		Mass per unit area/(g/m²)	Thickness/mm	Typical use
Product code	Organization type	Meridional direction	Latitudinal direction	Mass per unit area/(g/m²)	Thickness/mm	Typical use
EW25	plain weave	28±2	22±2	17.5±3	0.025±0.005	Electrical insulating products
EW30A	plain weave	18±1	22±1	25±3	0.030±0.005	Fishing rod
EW30B	plain weave	24±1	18±1	21±3	0.030±0.005	Electrical insulating products
EW40	plain weave	20±1	18±1	27±3	0.040±0.005	Electrical insulating products
EW60	plain weave	20±1	22±1	52±5	0.060±0.006	Electrical insulating products
EW80	twill	28±1	12±1	80±8	0.080±0.008	Fishing rod
EW90	plain weave	18±1	16±1	85±8	0.090±0.009	Electrical insulating products
EW100	plain weave	20±1	20±1	100±10	0.100±0.010	Electrical insulating products, glass fiber reinforced plastic products
EW110	plain weave	20±1	13.5±1	100±10	0.110±0.011	Electrical insulating products, glass fiber reinforced plastic products
EW130	twill	20±1	12±1	160±16	0.130±0.013	Fishing rod
EW140	plain weave	16±1	12±1	135±14	0.140±0.014	Electrical insulating products, glass fiber reinforced plastic products
EW180	twill	20±1	10±1	220±22	0.180±0.018	Fishing rod
EW200	plain weave	16±1	12±1	200±20	0.200±0.020	Electrical insulating products, glass fiber reinforced plastic products
EW240	twill	20±1	10±1	290±29	0.240±0.024	Fishing rod

Table 2

Product code	Tensile breaking strength of broken cloth ≥		Desizing cloth and processing tensile breaking strength ≥
Product code	Meridional direction	Latitudinal direction	Meridional direction	Latitudinal direction
EW25	118	88	33	31
EW30A	160	120	44	42
EW30B	180	100	50	35
EW40	196	137	71	40
EW60	274	274	76	66
EW80	774	157	250	40
EW90	441	294	122	70
EW100	490	400	137	96
EW110	490	490	137	118
EW130	1078	294	400	70
EW140	650	450	180	140
EW180	1617	245	600	60
EW200	980	735	190	180
EW240	2064	294	700	70

1. Plain weave: Each warp and weft yarn of this kind of cloth passes under one yarn and presses on another. Glass yarn has the largest curl, so its strength is lower than that of forged or twill cloth. This kind of cloth is straight and not easy to deform, so it is suitable for manufacturing FRP products with simple profile curve, especially laminated FRP.

2. Twill weave This kind of cloth is characterized by twill across the cloth surface. It has good paving property. It uses the hand lay-up method to pave the glass fiber reinforced plastics with double curved surfaces or concave and convex surfaces, and has high strength in all directions.

3. Satin weave: This kind of cloth has almost only warp or weft on its surface. When each yarn in one direction passes through, three, seven or eleven yarns can be passed. Glass fiber yarn has the smallest curl, so its strength is high. Satin cloth is similar to twill cloth, which has good covering property, and is suitable for hand lay-up of fiberglass products with complex surface.

4. Unidirectional fabric uses more yarn per unit width in one direction (generally in the warp direction), and less yarn per unit width in the other direction (in the weft direction), so the strength of the warp direction is much greater than that of the weft direction. According to the requirements of the glass glass steel products, the strength of the warp and weft can be determined in advance, such as 4:1, 7:1, etc.

For details, please call: raw material sales hotline 027-87290637