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A kind of composite nonwoven material and preparation method thereof

A technology of non-woven materials and material layers, applied in non-woven fabrics, textiles and papermaking, chemical instruments and methods, etc., can solve the problems of abnormal spinning, polluting the spinning board surface, long process, etc., and achieve improved anti-aging performance And antibacterial performance, good barrier and breathability, good material strength effect

Active Publication Date: 2016-10-12
DONGYING JOFO FILTRATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the blend spinning method is that the anti-aging polymer and polypropylene (PP) are mixed unevenly, which easily blocks the spinneret and cannot guarantee continuous and stable production; surface, drafting system and hot rolling mill, resulting in problems such as abnormal spinning and poor adhesion of the cloth surface
The shortcoming of the finishing method is that the process is long and the production cost is high.

Method used

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  • A kind of composite nonwoven material and preparation method thereof
  • A kind of composite nonwoven material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] The preparation method of the present application has simple operation, and compared with the post-finishing method, the process is simple, it can be carried out on a general nonwoven material production line, and the production cost is low. Moreover, by coating the surface of the PP spunbonded nonwoven material layer with a nano-titanium dioxide photocatalyst coating, the antibacterial effect is achieved; by coating the surface of the composite material with an ultraviolet absorber and an antibacterial agent, the anti-aging performance and antibacterial performance of the material are improved; Electrospinning and spunbonded nonwoven materials are combined to realize the barrier and air permeability of the material; the final composite nonwoven material has the characteristics of high strength, good air permeability, and durable weather resistance and antibacterial properties; no need to use blended spinning, and avoid The impact on the production process and product qu...

Embodiment 1

[0043] The process flow of this example, such as figure 1 As shown, it includes the preparation of nano-titanium dioxide photocatalyst coating, electrospinning, preparation and compounding steps of anti-aging microcapsules. The preparation method of the PP spunbonded nonwoven material layer refers to the conventional spunbond process, including polypropylene slicing, melt extrusion, filter metering, spinning, cooling, drawing, and web laying.

[0044] The concrete preparation method of the composite nonwoven material of this example is as follows:

[0045] (1) Choose the medical-grade nano-titanium dioxide photocatalyst provided by Hong Kong Kangli Medical Center, uniformly disperse the titanium dioxide photocatalyst in water, and prepare a suspension with a titanium dioxide content of 0.75%; spray the nano-titanium dioxide photocatalyst suspension through a 0.5mm nozzle, The sprayed suspension is atomized into droplets of different sizes under the clamping of compressed air ...

Embodiment 2

[0051] The process flow of this example is the same as that of Example 1, wherein, in the preparation process of the nano-titanium dioxide photocatalyst coating, the nano-titanium dioxide suspension is impacted into 5nm droplets by adjusting the pressure of the compressed air; The grammage of the nonwoven material layer is 28g / m 2 , the thickness is 0.3mm. In the electrospinning process, the thickness of the PP spunbonded nonwoven material layer laid on the surface of the aluminum plate receiver is 0.32mm, and the weight is 32g / m 2, dissolving PA66 resin slices in a solvent to obtain 0.4g / ml spinning solution, applying 40KV high-voltage positive charge to the spinning solution nozzle, and grounding the aluminum plate receiver covered with PP spunbond nonwoven material layer, and conducting the spinning solution Electrospinning, the extrusion rate of the spinning solution is 3ml / h, the spinning voltage is set to 40KV, and the receiving distance is 35cm. The fibers formed by el...

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Abstract

The invention discloses a composite nonwoven material and a preparation method thereof. The composite nonwoven material disclosed by the invention comprises at least two PP spun-bonded nonwoven material layers and a PA6 or PA66 electrostatic spinning nanofiber material layer sandwiched between the two PP spun-bonded nonwoven material layers, wherein an ultraviolet light absorber and an antibacterial agent are uniformly absorbed to the surface of the composite nonwoven material; and in the two PP spun-bonded nonwoven material layers between which the PA6 or PA66 electrostatic spinning nanofiber material layer is sandwiched, the surface of at least one PP spun-bonded nonwoven material layer is coated with a nanometer titania photocatalytic coating. The composite nonwoven material disclosed by the invention is high in strength and low in fiber fineness and has the advantages of high porosity, high specific surface area, excellent barrier property, excellent gas permeability, aging resistance and antibacterial property. Compared with a blended nonwoven material, the composite nonwoven material disclosed by the invention has the advantages that the production and quality defects caused by the reason that the additives are non-uniformly mixed or separated out are overcome; and moreover, the preparation method is simple, and only general nonwoven material production equipment needs to be adopted.

Description

technical field [0001] The application relates to the field of nonwoven materials, in particular to a composite nonwoven material used in the construction field and a preparation method thereof. Background technique [0002] New high-quality non-woven building structure materials need to have good air permeability, weather resistance and mold removal, durability and energy saving. This evolution can be traced back to the emergence of housewrap-like materials that function as air barriers in the 1980s. At present, in addition to isolating the airflow, it also needs to have properties such as weather resistance and mildew removal; for the latter, it is not only a yearning, but also a requirement. In terms of consumption, according to INDA data, the annual consumption of roofing and structural materials in North America is about 180 million US dollars, mainly including the use of cladding / underlay and modified asphalt in the United States and Canada. Substrate for roofing pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/02B32B9/04B32B37/02B32B37/15B32B37/10D04H1/728
CPCB32B9/04B32B27/32B32B37/02B32B37/10B32B37/15B32B2255/02B32B2255/20B32B2262/0261D04H1/728
Inventor 慕春霞谢国东刘月梅范小杰荆晓飞
Owner DONGYING JOFO FILTRATION TECH CO LTD
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