A kind of pretreatment method of long glass fiber yarn
A technology of long glass fiber and glass fiber yarn, applied in the field of pretreatment, can solve the problem of inability to prepare long glass fiber reinforced PA10T material with high content of glass fiber, etc., and achieve the effects of low cost, simple processing and stable quality
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Embodiment 1
[0015] Put the grade ER4301 alkali-free glass fiber yarn (2400 tex) into an oven that has been heated to 160±10°C, and the glass fiber is pressed in the oven. figure 1 Arrange the structure as shown, hold for 10 minutes, take it out and cool it to room temperature, and then immerse it in 50L concentrated sulfuric acid containing PA10T. The concentration of PA10T in concentrated sulfuric acid is 0.04g / ml, take it out after soaking for 10 minutes, then use Ionized water is sprayed and the residence time is 10 minutes. Then spray with deionized water until the surface pH is greater than 6.5, and finally put it in a drying box at 100°C for 60 minutes, take it out and wind it into a roll to get the product. After testing, the content of PA10T in the product is 1.53% ( quality score).
Embodiment 2
[0017] Put the grade ER4301 alkali-free glass fiber yarn (2400 tex) into an oven that has been heated to 170±10°C, and the glass fiber is pressed in the oven figure 1 Arrange the structure as shown, keep warm for 8 minutes, take it out and cool it to room temperature, then immerse it in 50L, PA10T in concentrated sulfuric acid concentration of 0.04g / ml, take it out after soaking for 8 minutes, and then spray it with deionized water, stay Time 8 minutes. Then spray with deionized water until the surface pH is greater than 6.5, and finally put it in a drying box at 100°C for 50 minutes, take it out and wind it into a roll to get the product. After testing, the content of PA10T in the product is 1.13% ( quality score).
Embodiment 3
[0019] Put the brand ER4301 alkali-free glass fiber yarn (2400 tex) into the oven that has been heated to 180±10°C, and the glass fiber is pressed in the oven. figure 1 Arrange the structure as shown, hold for 7 minutes, take it out and cool it to room temperature, then immerse it in 50L, PA10T in concentrated sulfuric acid concentration of 0.04g / ml, take it out after soaking for 7 minutes, and then spray it with deionized water, stay Time 7 minutes. Then spray with deionized water until the surface pH is greater than 6.5, and finally put it in a drying box at 100°C for 40 minutes, take it out and wind it into a roll to get the product. After testing, the content of PA10T in the product is 0.73% ( quality score).
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