阅读说明：本技术 一种高强度低拉伸、高吸水性无纺布及其制备方法 (High-strength low-stretch high-water-absorptivity non-woven fabric and preparation method thereof ) 是由 吴嘉祺 于 2020-10-20 设计创作，主要内容包括：本发明提出了一种高强度低拉伸、高吸水性无纺布,所述高强度低拉伸、高吸水性无纺布包含有长纤维层、短纤维层和细旦长丝层；长纤维层：包含有玻璃纤维和聚乙烯纤维；短纤维层：包含有粘胶纤维、棉纤维和聚酯短纤维；细旦长丝层：包含有降温母粒和聚丙烯切片；其中：所述长纤维层、短纤维层和细旦长丝层表面重叠压合在一起,本发明还提供一种高强度低拉伸、高吸水性无纺布的制备方法：包括以下步骤：S1)：长纤维层制备：选取叶腊石、石英砂、石灰石、白云石、硼钙石和硼镁石为原料,经高温熔制和拉丝获得玻璃纤维原丝,该无纺布具有高强度、低拉伸和高吸水的特点,且制备方法简单,可以满足人们的生活需求。(The invention provides a high-strength low-tensile high-water-absorptivity non-woven fabric, which comprises a long fiber layer, a short fiber layer and a fine denier filament layer; long fiber layer: comprises glass fiber and polyethylene fiber; short fiber layer: comprises viscose fiber, cotton fiber and polyester staple fiber; fine denier filament layer: comprises cooling master batch and polypropylene slices; wherein: the surfaces of the long fiber layer, the short fiber layer and the fine denier long fiber layer are overlapped and pressed together, and the invention also provides a preparation method of the non-woven fabric with high strength, low stretching and high water absorption: the method comprises the following steps: s1): preparing a long fiber layer: the glass fiber raw fibers are obtained by selecting pyrophyllite, quartz sand, limestone, dolomite, borocalcite and boromagnesite as raw materials and performing high-temperature melting and wire drawing.)

1. A high-strength low-stretch high-water-absorption non-woven fabric is characterized in that: the high-strength low-tensile high-water-absorptivity non-woven fabric comprises a long fiber layer, a short fiber layer and a fine denier filament layer;

long fiber layer: comprises glass fiber and polyethylene fiber;

short fiber layer: comprises viscose fiber, cotton fiber and polyester staple fiber;

fine denier filament layer: comprises cooling master batch and polypropylene slices;

wherein: the long fiber layer, the short fiber layer and the fine denier filament layer are overlapped and pressed together on the surface.

2. The nonwoven fabric of claim 1, wherein the nonwoven fabric has a high strength, a low elongation, and a high water absorption, and is characterized in that: the viscose fiber contains silica gel, titanium dioxide and wood pulp.

3. A preparation method of a high-strength low-stretch high-water-absorptivity non-woven fabric is characterized by comprising the following steps: the method comprises the following steps:

s1): preparing a long fiber layer: selecting pyrophyllite, quartz sand, limestone, dolomite, borocalcite and boromagnesite as raw materials, carrying out high-temperature melting and wire drawing to obtain glass fiber precursor, then preparing polyethylene fiber precursor by using a high-volatility solvent dry gel spinning process route, and weaving the glass fiber precursor and the polyethylene fiber precursor into a mesh structure to form a long fiber layer;

s2): preparing a short fiber layer: selecting silica gel, titanium dioxide and wood pulp to prepare viscose fiber, mixing the viscose fiber with cotton fiber and polyester staple fiber, and opening, carding and lapping to form a staple fiber layer;

s3): preparing a fine denier filament layer: taking the cooled master batch and polypropylene slices as raw materials, sequentially heating and melting the raw materials by a screw extruder, and then separating and lapping the raw materials to form a fine denier filament layer;

s4): heating and compounding: the long fiber layer, the short fiber layer and the fine denier filament layer are sequentially laminated together, and are quickly contacted with a cooling compression roller after being pre-pressed by a high-temperature compression roller, so that the high-strength low-tensile high-hydroscopicity non-woven fabric can be obtained.

4. The method for preparing a high-strength low-stretch high-water-absorptivity nonwoven fabric according to claim 3, wherein the method comprises the following steps: the silica gel in the short fiber layer preparation step is inorganic silica gel, and the titanium dioxide is nano titanium dioxide.

5. The method for preparing a high-strength low-stretch high-water-absorptivity nonwoven fabric according to claim 3, wherein the method comprises the following steps: the melt index of the polypropylene slice in the preparation step of the fine denier filament layer is 30g/min-60 g/min.

6. The method for preparing a high-strength low-stretch high-water-absorptivity nonwoven fabric according to claim 3, wherein the method comprises the following steps: the mass ratio of the cooling master batch to the polypropylene slices in the preparation step of the fine denier filament layer is 1: 4.

7. The method for preparing a high-strength low-stretch high-water-absorptivity nonwoven fabric according to claim 3, wherein the method comprises the following steps: the polyester staple fibers in the staple fiber layer preparation step account for 15% -17% of the whole staple fiber layer.

8. The method for preparing a high-strength low-stretch high-water-absorptivity nonwoven fabric according to claim 3, wherein the method comprises the following steps: in the heating compounding step, the temperature of the high-temperature compression roller is 120-150 ℃, and the temperature of the cooling compression roller is 5-15 ℃.

Technical Field

The invention relates to the technical field of non-woven fabric processing, in particular to a high-strength low-stretch high-water-absorptivity non-woven fabric and a preparation method thereof.

Background

The non-woven fabric is also called non-woven fabric, is formed by directional or random fibers, is called as fabric because of the appearance and certain properties of the fabric, has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like, the product has rich colors, is bright and beautiful, fashionable and environment-friendly, has wide application, beautiful and elegant appearance and various patterns and styles, the non-woven fabric is light in weight, environment-friendly and recyclable, is internationally recognized as an environment-friendly product for protecting the earth ecology, is suitable for industries such as agricultural films, shoemaking, leather making, mattresses, child-mother quilts, decoration, chemical engineering, printing, automobiles, building materials, furniture and the like, and along with the improvement of scientific technology, people put forward higher requirements on the performance of the non-woven fabric, and the existing non-woven fabric cannot meet the requirements of people in the aspects of strength, stretchability and water absorption.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a high-strength low-stretch high-water-absorptivity non-woven fabric and a preparation method thereof.

In order to achieve the above object, the present invention proposes: a high-strength low-stretch high-water-absorptivity non-woven fabric comprises a long fiber layer, a short fiber layer and a fine denier filament layer;

long fiber layer: comprises glass fiber and polyethylene fiber;

short fiber layer: comprises viscose fiber, cotton fiber and polyester staple fiber;

fine denier filament layer: comprises cooling master batch and polypropylene slices;

wherein: the long fiber layer, the short fiber layer and the fine denier filament layer are overlapped and pressed together on the surface.

As a preferred technical scheme of the invention: the viscose fiber contains silica gel, titanium dioxide and wood pulp.

The invention also provides a preparation method of the non-woven fabric with high strength, low stretch and high water absorption, which comprises the following steps: the method comprises the following steps:

s1): preparing a long fiber layer: selecting pyrophyllite, quartz sand, limestone, dolomite, borocalcite and boromagnesite as raw materials, carrying out high-temperature melting and wire drawing to obtain glass fiber precursor, then preparing polyethylene fiber precursor by using a high-volatility solvent dry gel spinning process route, and weaving the glass fiber precursor and the polyethylene fiber precursor into a mesh structure to form a long fiber layer;

s2): preparing a short fiber layer: selecting silica gel, titanium dioxide and wood pulp to prepare viscose fiber, mixing the viscose fiber with cotton fiber and polyester staple fiber, and opening, carding and lapping to form a staple fiber layer;

s3): preparing a fine denier filament layer: taking the cooled master batch and polypropylene slices as raw materials, sequentially heating and melting the raw materials by a screw extruder, and then separating and lapping the raw materials to form a fine denier filament layer;

s4): heating and compounding: the long fiber layer, the short fiber layer and the fine denier filament layer are sequentially laminated together, and are quickly contacted with a cooling compression roller after being pre-pressed by a high-temperature compression roller, so that the high-strength low-tensile high-hydroscopicity non-woven fabric can be obtained.

As a preferred technical scheme of the invention: the silica gel in the short fiber layer preparation step is inorganic silica gel, and the titanium dioxide is nano titanium dioxide.

As a preferred technical scheme of the invention: the melt index of the polypropylene slice in the preparation step of the fine denier filament layer is 30g/min-60 g/min.

As a preferred technical scheme of the invention: the mass ratio of the cooling master batch to the polypropylene slices in the preparation step of the fine denier filament layer is 1: 4.

As a preferred technical scheme of the invention: the polyester staple fibers in the staple fiber layer preparation step account for 15% -17% of the whole staple fiber layer.

As a preferred technical scheme of the invention: in the heating compounding step, the temperature of the high-temperature compression roller is 120-150 ℃, and the temperature of the cooling compression roller is 5-15 ℃.

Compared with the prior art, the invention has the beneficial effects that:

1. the high-strength low-tensile high-water-absorptivity non-woven fabric selects the glass fiber and the polyethylene fiber as long fiber layers, the glass fiber is an inorganic non-metallic material with excellent performance, the mechanical strength is high, the glass fiber is used as a reinforcing material in the non-woven fabric and can play a role in reinforcement, the polyethylene fiber has the advantages of high strength and low density, and the strength of the non-woven fabric can be improved;

2. the high-strength low-stretch high-water-absorptivity non-woven fabric selects viscose fiber, cotton fiber and polyester short fiber as short fiber layers, the viscose fiber is cellulose fiber obtained by extracting and re-plasticizing fiber molecules from wood as a raw material, the cellulose fiber and the cotton fiber have good water absorptivity, and the polyester short fiber can improve the high-temperature stability of the non-woven fabric and enhance the anti-wrinkling capability of the non-woven fabric;

3. the high-strength low-stretch high-water-absorptivity non-woven fabric selects the cooling master batches and the polypropylene slices as the fine denier filament layers, the polypropylene is thermoplastic synthetic resin with excellent performance, the stretching ductility of the non-woven fabric can be reduced after high-temperature compounding, the spinning process of the polypropylene can be improved by the cooling master batches, and the performance of the polypropylene is improved;

4. the high-strength low-stretch high-hydroscopicity non-woven fabric is obtained by heating and compounding the long fiber layer, the short fiber layer and the fine denier long fiber layer, the obtained non-woven fabric has high absorbability, the tensile ductility is low, the overall strength is high, the tearing phenomenon is not easy to occur, meanwhile, the preparation method of the non-woven fabric is simple, the raw materials are easy to obtain, and the large-scale production of the non-woven fabric is convenient.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides the following technical scheme:

the first embodiment is as follows:

a high-strength low-stretch high-hydroscopicity non-woven fabric comprises a long fiber layer, a short fiber layer and a fine denier filament layer;

long fiber layer: comprises glass fiber and polyethylene fiber;

short fiber layer: the composite material comprises viscose, cotton fiber and polyester staple fiber, wherein the viscose comprises silica gel, titanium dioxide and wood pulp, the silica gel is inorganic silica gel, and the titanium dioxide is nano titanium dioxide;

fine denier filament layer: comprises cooling master batch and polypropylene slices;

wherein: the surfaces of the long fiber layer, the short fiber layer and the fine denier filament layer are overlapped and pressed together.

The invention also provides a preparation method of the non-woven fabric with high strength, low stretch and high water absorption, which comprises the following steps: the method comprises the following steps:

s1): preparing a long fiber layer: selecting pyrophyllite, quartz sand, limestone, dolomite, borocalcite and boromagnesite as raw materials, carrying out high-temperature melting and wire drawing to obtain glass fiber precursor, then preparing polyethylene fiber precursor by using a high-volatility solvent dry gel spinning process route, and weaving the glass fiber precursor and the polyethylene fiber precursor into a mesh structure to form a long fiber layer;

s2): preparing a short fiber layer: selecting silica gel, titanium dioxide and wood pulp to prepare viscose fiber, mixing the viscose fiber with cotton fiber and polyester staple fiber, and opening, carding and lapping to form a staple fiber layer, wherein the polyester staple fiber accounts for 15% of the whole staple fiber layer;

s3): preparing a fine denier filament layer: taking the cooling master batch and the polypropylene slices as raw materials, sequentially heating and melting the raw materials through a screw extruder, and then forming a fine denier filament layer after dividing and lapping the filaments, wherein the melt index of the polypropylene slices is 30g/min, and the mass ratio of the cooling master batch to the polypropylene slices is 1: 4;

s4): heating and compounding: the long fiber layer, the short fiber layer and the fine denier filament layer are sequentially laminated together, and after being pre-pressed by a high-temperature press roller, the high-temperature press roller is quickly contacted with a cooling press roller, so that the high-strength low-tensile high-hydroscopicity non-woven fabric can be obtained, wherein the temperature of the high-temperature press roller is 120 ℃, and the temperature of the cooling press roller is 5 ℃.

Example two:

a high-strength low-stretch high-hydroscopicity non-woven fabric comprises a long fiber layer, a short fiber layer and a fine denier filament layer;

long fiber layer: comprises glass fiber and polyethylene fiber;

short fiber layer: the composite material comprises viscose, cotton fiber and polyester staple fiber, wherein the viscose comprises silica gel, titanium dioxide and wood pulp, the silica gel is inorganic silica gel, and the titanium dioxide is nano titanium dioxide;

fine denier filament layer: comprises cooling master batch and polypropylene slices;

wherein: the surfaces of the long fiber layer, the short fiber layer and the fine denier filament layer are overlapped and pressed together.

The invention also provides a preparation method of the non-woven fabric with high strength, low stretch and high water absorption, which comprises the following steps: the method comprises the following steps:

s1): preparing a long fiber layer: selecting pyrophyllite, quartz sand, limestone, dolomite, borocalcite and boromagnesite as raw materials, carrying out high-temperature melting and wire drawing to obtain glass fiber precursor, then preparing polyethylene fiber precursor by using a high-volatility solvent dry gel spinning process route, and weaving the glass fiber precursor and the polyethylene fiber precursor into a mesh structure to form a long fiber layer;

s2): preparing a short fiber layer: selecting silica gel, titanium dioxide and wood pulp to prepare viscose fiber, mixing the viscose fiber with cotton fiber and polyester staple fiber, and opening, carding and lapping to form a staple fiber layer, wherein the polyester staple fiber accounts for 16% of the whole staple fiber layer;

s3): preparing a fine denier filament layer: taking the cooling master batch and the polypropylene slices as raw materials, sequentially heating and melting the raw materials through a screw extruder, and then forming a fine denier filament layer after dividing and lapping the filaments, wherein the melt index of the polypropylene slices is 45g/min, and the mass ratio of the cooling master batch to the polypropylene slices is 1: 4;

s4): heating and compounding: the method comprises the following steps of sequentially laminating a long fiber layer, a short fiber layer and a fine denier filament together, prepressing by a high-temperature press roller, and rapidly contacting with a cooling press roller to obtain the high-strength low-tensile high-hydroscopicity non-woven fabric, wherein the temperature of the high-temperature press roller is 135 ℃, and the temperature of the cooling press roller is 10 ℃.

Example three:

a high-strength low-stretch high-hydroscopicity non-woven fabric comprises a long fiber layer, a short fiber layer and a fine denier filament layer;

long fiber layer: comprises glass fiber and polyethylene fiber;

short fiber layer: the composite material comprises viscose, cotton fiber and polyester staple fiber, wherein the viscose comprises silica gel, titanium dioxide and wood pulp, the silica gel is inorganic silica gel, and the titanium dioxide is nano titanium dioxide;

fine denier filament layer: comprises cooling master batch and polypropylene slices;

wherein: the surfaces of the long fiber layer, the short fiber layer and the fine denier filament layer are overlapped and pressed together.

The invention also provides a preparation method of the non-woven fabric with high strength, low stretch and high water absorption, which comprises the following steps: the method comprises the following steps:

s1): preparing a long fiber layer: selecting pyrophyllite, quartz sand, limestone, dolomite, borocalcite and boromagnesite as raw materials, carrying out high-temperature melting and wire drawing to obtain glass fiber precursor, then preparing polyethylene fiber precursor by using a high-volatility solvent dry gel spinning process route, and weaving the glass fiber precursor and the polyethylene fiber precursor into a mesh structure to form a long fiber layer;

s2): preparing a short fiber layer: selecting silica gel, titanium dioxide and wood pulp to prepare viscose fiber, mixing the viscose fiber with cotton fiber and polyester staple fiber, and forming a staple fiber layer after opening, carding and lapping, wherein the polyester staple fiber accounts for 17% of the whole staple fiber layer;

s3): preparing a fine denier filament layer: taking the cooling master batch and the polypropylene slices as raw materials, sequentially heating and melting the raw materials through a screw extruder, and then forming a fine denier filament layer after dividing and lapping the filaments, wherein the melt index of the polypropylene slices is 60g/min, and the mass ratio of the cooling master batch to the polypropylene slices is 1: 4;

s4): heating and compounding: the method comprises the following steps of sequentially laminating a long fiber layer, a short fiber layer and a fine denier filament together, prepressing the mixture by a high-temperature press roller, and rapidly contacting the mixture with a cooling press roller to obtain the high-strength low-tensile high-hydroscopicity non-woven fabric, wherein the temperature of the high-temperature press roller is 150 ℃, and the temperature of the cooling press roller is 15 ℃.

The invention has the advantages that: this low tensile, super absorbent polymer non-woven fabrics of high strength utilizes long fiber layer, short fiber layer and fine denier filament layer to heat compound preparation and obtains, the non-woven fabrics that prepares to obtain has high strength, low tensile and high absorptivity's characteristics, utilize viscose fiber and cotton fiber's hydroscopicity, the moisture absorption capacity of promotion non-woven fabrics that can be further, this low tensile, super absorbent polymer non-woven fabrics of high strength's preparation method is convenient, the raw materials obtains with low costs, the non-woven fabrics that prepares to obtain can satisfy people's growing life demand.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.