Preparation method for thin flame-retardant non-woven fabric applied to vehicles

A technology of flame-retardant non-woven fabrics and manufacturing methods, which is applied in the direction of flame-retardant fibers, non-woven fabrics, fiber types, etc., can solve the problems of inability to achieve high-efficiency flame retardancy and flame-retardant effects, and achieve excellent adhesion Adhesion, good flame retardant effect, material saving effect

Active Publication Date: 2018-11-30
苏州弗瑞斯特汽车新材料有限公司
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AI-Extracted Technical Summary

Problems solved by technology

[0005] The above-mentioned patents all use non-woven fabrics of traditional thickness to obtain flame retardancy, heat insulation and air permeability, but none of them can achieve high-efficiency flame retardancy
However, rese...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a preparation method for a thin flame-retardant non-woven fabric applied to vehicles. The preparation method comprises the following steps: compounding polyester fibers and viscose fibers in a needling manner so as to form a base fabric; uniformly mixing a flame retardant and water-based glue to form a flame-retardant adhesive, and mixing the flame-retardant adhesive with black color paste and water to obtain an impregnation solution; soaking the base fabric obtained after needling in the impregnation solution; and spraying powder particles on the impregnated base fabric so as to obtain the flame-retardant non-woven fabric with a gram weight of 100 to 150 g/m<2>, wherein the powder particles are a mixture of the powder particles of polyethersulfone resin and phenolic resin. Compared with conventional flame-retardant non-woven fabrics, the flame-retardant non-woven fabric of the invention is reduced in thickness, saves materials and lowered in production cost, and achieves good flame retardant effect at the same time.

Application Domain

Technology Topic

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  • Preparation method for thin flame-retardant non-woven fabric applied to vehicles
  • Preparation method for thin flame-retardant non-woven fabric applied to vehicles
  • Preparation method for thin flame-retardant non-woven fabric applied to vehicles

Examples

  • Experimental program(3)

Example Embodiment

[0021] Example 1:
[0022] The first step, the preparation of the base cloth
[0023] Through opening, carding, laying, and needle punching into polyester fibers, and then laying viscose fibers on the upper layer and acupuncture and compounding them into base fabric, the needle punching speed is 1300 times/min, and the needle density is 2500 pieces/m , so that the polyester fibers are evenly and firmly connected together. The total weight of the base fabric is 100-120g/m 2 , and the weight percentage of polyester fiber is 80-95%, and the weight percentage of viscose fiber is 5-20%.
[0024] The second step, impregnation
[0025] The flame retardant and the water-based glue are uniformly mixed to form a flame-retardant glue, wherein the water-based glue accounts for 40-60% by weight and the flame retardant accounts for 40-60% by weight. The flame retardant glue is mixed with color paste and water to obtain an impregnating liquid, and the base fabric obtained by acupuncture is soaked in the impregnating liquid.
[0026] Part three, dusting
[0027] The impregnated base cloth is dusted with powder particles by the vibration of a duster to obtain the flame-retardant non-woven fabric of the present invention, and the obtained flame-retardant non-woven fabric has a gram weight of 100-150 g/m 2. The powder particles are a mixture of polyethersulfone resin and phenolic resin, and the weight percentage of polyethersulfone resin is 80-90%, and the weight percentage of phenolic resin is 10-20%.
[0028] In order to obtain a thin flame retardant non-woven fabric with high flame retardant performance and high bonding strength, the best ratio was obtained by orthogonal experiments of three factors and three levels. Ether sulfone resin (C) is an investigation factor, and each factor takes 3 levels. The experimental design and result analysis are shown in Table 1. figure 1 shown.
[0029] Table 1
[0030]
[0031] Combined with Table 1, figure 1 The analysis results show that among the 9 sets of experimental results, the flame retardant fresh fruit produced by Experiment 7 is the best. The weight percentage of fiber is 80%; the weight percentage of flame retardant in the flame retardant glue is 40%, and the weight percentage of glue is 60% accordingly; the weight percentage of polyethersulfone resin in the mixed powder particles is 90%, correspondingly phenolic resin. The weight percentage is 10%.

Example Embodiment

[0032] Embodiment 2:
[0033] The first step, the preparation of the base cloth
[0034] Through opening, carding, laying, and needle punching into polyester fibers, and then laying viscose fibers on the upper layer and acupuncture and compounding them into base fabric, the needle punching speed is 1300 times/min, and the needle density is 2500 pieces/m , so that the polyester fibers are evenly and firmly connected together. The total weight of the base fabric is 100-120g/m 2 , and the weight percentage of polyester fiber is 60-80%, and the weight percentage of viscose fiber is 20-40%.
[0035] The second step, impregnation
[0036] The flame retardant and the water-based glue are uniformly mixed to form a flame-retardant glue, wherein the water-based glue accounts for 40-60% by weight and the flame retardant accounts for 40-60% by weight. The flame retardant glue is mixed with color paste and water to obtain an impregnating liquid, and the base fabric obtained by acupuncture is soaked in the impregnating liquid.
[0037] Part three, dusting
[0038] The impregnated base cloth is dusted with powder particles by the vibration of a duster to obtain the flame-retardant non-woven fabric of the present invention, and the obtained flame-retardant non-woven fabric has a gram weight of 100-150 g/m 2. The powder particles are a mixture of polyethersulfone resin and phenolic resin, and the weight percentage of polyethersulfone resin is 80-90%, and the weight percentage of phenolic resin is 10-20%.
[0039] In order to obtain a thin flame retardant non-woven fabric with high flame retardant performance and high bonding strength, the best ratio was obtained by orthogonal experiments of three factors and three levels, in which polyester fiber (A), glue (B), polyethersulfone resin (C) is an investigation factor, and each factor takes 3 levels. The experimental design and result analysis are shown in Table 2, as shown in Figure 2.
[0040] Table 2
[0041]
[0042] Combined with Table 2, figure 2The analysis results show that among the 9 sets of experimental results, the flame retardant fresh fruit produced by Experiment 6 is the best, and its optimal level combination is A2B3C1, that is, the optimal process ratio is: the weight percentage of viscose fiber is 30%, and the polyester fiber is 30% by weight. The weight percentage of fiber is 70%; the weight percentage of flame retardant in the flame retardant glue is 60%, and the corresponding weight percentage of glue is 40%; the weight percentage of polyethersulfone resin in the mixed powder particles is 80%, and the corresponding weight percentage of phenolic resin The weight percentage is 20%.

Example Embodiment

[0043] The comparison of the experimental results of the optimal process ratio of Example 1 and Example 2 shows that although the amount of flame retardant contained in the immersion liquid in Experiment 7 of Example 1 is less than that in Experiment 6 of Example 2, in the mixed powder particles sprinkled The content of polyethersulfone resin is relatively high. Due to the good viscosity and internal cohesion of the polyethersulfone resin, the powder particles of the polyethersulfone resin are used to improve the adhesion between the base fabric and aluminum foil, glass fiber and foam, and the polyethersulfone resin also has self-extinguishing properties without adding any The flame retardant has excellent flame retardancy, so the nonwoven fabric obtained in Example 1 has high flame retardancy. On the contrary, the content of polyethersulfone resin in the mixed powder particles in the dusting process of experiment 7 of Example 2 is relatively low, but the content of flame retardant in the impregnating liquid is relatively high, and the content of viscose fiber in the base fabric is relatively high , which can be combined with more flame retardants to adsorb flame retardants into polyester fibers.
[0044] The flame retardant non-woven fabric obtained by the invention is added with viscose fiber, and the base fabric of the same size is lighter than that without viscose fiber, and when burning, the burning area will not sag, the flame is perpendicular to the base fabric, and the burning speed is reduced; By adding flame retardants, the combustion speed is reduced; the polyethersulfone resin in the dusted particles has self-extinguishing properties, which further reduces the combustion speed; the macromolecular structure of the phenolic resin in the dusted particles has a large number of polar groups, Endowed with excellent adhesion, after cross-linking and curing, it can ensure the stability and durability of the bonding interface, so that it is not easy to melt and drip at the ignition point, ensure that the flame is perpendicular to the base fabric, and prevent the flame from drilling into the inner layer of the base fabric.
[0045] The weight of traditional flame retardant non-woven fabric is 1000~1500g/m 2 , the flame retardant non-woven fabric obtained by the present invention is relatively thin, and the gram weight is 100-150 g/m 2. The horizontal burning speed of the thin flame-retardant non-woven fabric obtained by the invention is less than the limit specified in GB8410-(burning characteristics of automotive interior materials) (≦50mm/min), which can meet its application in automobile engine covers and save materials at the same time. , Reduce production costs.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

PropertyMeasurementUnit
Gram weight100.0 ~ 150.0g/m²
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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