CN112064148B - Tough type acupuncture non-woven fabric - Google Patents
Tough type acupuncture non-woven fabric Download PDFInfo
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- CN112064148B CN112064148B CN202010983720.XA CN202010983720A CN112064148B CN 112064148 B CN112064148 B CN 112064148B CN 202010983720 A CN202010983720 A CN 202010983720A CN 112064148 B CN112064148 B CN 112064148B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Nonwoven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention belongs to the technical field of non-woven fabrics, and particularly relates to a tough needle-punched non-woven fabric which is prepared from PET slices, polyhexamethylene adipamide, gum rosin, protein additives, amino silicone oil, a polymerization agent and a polycarboxylic acid compound through the steps of S1. Drying, S2. Melting, S3. Wire drawing, S4. Wire swinging and S5. Needle punching. According to the PET/PA66 blended yarn, the protein additive is added into a PET/PA66 blended yarn system, so that the compatibility is higher, and the blended yarn has better toughness and strength; meanwhile, the gum rosin and the amino silicone oil are added, the gum rosin and the amino silicone oil can be used as bridges for connecting short peptides, more double bonds are arranged in the gum rosin and can react with sulfydryl, the interconnection difficulty between the short peptides is greatly reduced, the molecular chain of the amino silicone oil is longer, the effect range is large, the injection speed can be increased under the condition of keeping the silk state, and the yield is improved.
Description
Technical Field
The invention belongs to the technical field of non-woven fabrics, and particularly relates to a tough needle-punched non-woven fabric.
Background
Nonwoven fabrics, also known as nonwovens, are composed of oriented or random fibers. It is called a cloth because of its appearance and certain properties. The non-woven 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. If plastic particles are mostly adopted as raw materials, the plastic particles are produced by a continuous one-step method of high-temperature melting, spinning, laying a line and hot-pressing coiling
One of the large directions of use of nonwoven fabrics is to use them as the base layer of waterproof rolls, and the waterproof rolls have a very long service life and are inevitably subjected to various accidents, so that the nonwoven fabrics used as the base of waterproof rolls need better toughness to deal with various inevitable damages. Various existing modifications to non-woven fabrics are mainly realized by surface curtain coating, and a mode of modifying an extrusion formula is less frequent, because PET resin which is a commonly used raw material of the non-woven fabrics has stronger polarity and is difficult to blend with common modified resin, and the PET resin is sensitive to water, so that the modification to PET is difficult, and scholars have provided some technical schemes for the blending of nylon and PET at the beginning of this century, but the technical schemes are mainly applied to plastic alloys, and the PA66 aggregates cannot be well wrapped by the PET under the condition that the width of the material is only micrometer level in the melt-blowing process of the non-woven fabrics, and the strength is lower.
Disclosure of Invention
The invention aims to provide a tough needle-punched non-woven fabric which has the effects of high toughness and high strength.
The technical purpose of the invention is realized by the following technical scheme: a tough needle-punched non-woven fabric comprises the following components in parts by weight:
PET slicing: 100-120 parts;
polyhexamethylene adipamide: 20-28 parts;
gum rosin: 5-8 parts;
protein additives: 1.5-3 parts;
amino silicone oil: 6-18 parts.
By adopting the technical scheme, when an applicant researches a PET slice and a PA66 blending melt-blowing process, the direct mixing effect of the PET slice and the PA66 blending melt-blowing process is not good, the compatibilizer used for PET/PA66 blending is researched, but after an AX8900 and EMG compatibilizer is tested, the compatibilizer is found to have a defect when being applied to blending spinning, the final spinning quality is poor, after the applicant accidentally adds a protein additive in an experiment, the spinning quality is obviously improved, amino silicone oil is polysiloxane with amino on a side chain, the amino silicone oil and gum rosin are experimental improvements made for improving the melt ejection performance at the beginning, but after the applicant conducts the protein additive experiment, the compatibilizer is found to have a mutual promoting effect on the protein additive and the gum rosin or the amino silicone oil, so that the melt is easier to be ejected, various indexes of the spinning are greatly improved, and when the three are used together, the respective addition amount of the three is reduced.
The invention is further provided with: the animal protein surfactant comprises the following components:
protein foaming agent: 10-15 parts;
polypropylene grafted maleic anhydride: 1.5-2 parts;
melamine: 2-2.5 parts.
The invention is further provided with: the protein foaming agent is an animal hoof keratin foaming agent.
By adopting the technical scheme, the protein foaming agent is generally applied to cement foaming and is short-chain polypeptide obtained by hydrolyzing animal and plant proteins, bubbles generated in cement are fine and firm, and the applicant creatively discovers that when the protein foaming agent is applied to blend spinning, a sea-island structure formed in silk threads becomes finer, wherein the better choice is that the animal hoof keratin foaming agent contains more cystine and cysteine, short peptides are embedded into PET and PA66 paragraphs through ester exchange and amine ester exchange reactions, disulfide bonds and sulfydryl of side chains can perform cross-linking reactions with each other, so that the integral mixing performance is better, and the effect of the animal hoof keratin foaming agent is better regulated through polypropylene grafted maleic anhydride.
The invention is further configured as follows: and the polymerization agent is one of trimethoxy silane or polyaluminum or tetrabutyl titanate in the same mass part, and the addition amount of the polymerization agent is 2-2.5 parts.
By adopting the technical scheme, the polymerizing agent absorbs water to form small lumps after spinning and lapping, so that fibers near the lumps are bonded and wound with each other, and the toughness of the fiber web is enhanced.
The invention is further provided with: and adding 3-5 parts by mass of polycarboxylic acid compound, wherein the polycarboxylic acid compound comprises one or more anhydrides of malic acid, citric acid, tartaric acid and maleic acid or anhydrides formed by mutually dehydrating and condensing any acid, and the added amount is calculated by converting the amount of carboxyl generated by hydrolysis of the added substances into acetic acid with equal carboxyl amount.
By adopting the technical scheme, the acid anhydride of the polycarboxyl can participate in ester exchange reaction to form more binding reaction sites, so that the flexibility of the fiber is enhanced, but the tenacity of the fiber is influenced to a certain extent.
The invention is further provided with: a preparation process of tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding PET slices, polyhexamethylene adipamide and gum rosin into a melting device for melting, adding a protein additive, amino silicone oil, a polymerization agent and polycarboxylic acid after melting, quickly stirring uniformly, and filtering through a melt filter;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, and cooling tows through side blowing while drawing;
s4, swinging: s3, scattering tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
By adopting the technical scheme, the method has the advantages of simple process, low cost and high efficiency.
The invention is further provided with: in the step S2, the filtering precision of the melt filter is not more than 40 μm.
Through adopting above-mentioned technical scheme, prevent to block up the wire drawing shower nozzle.
The invention is further configured as follows: in step S3, when the polymerization agent is added in step S2, the air humidity of the cross air blow is controlled to be less than 50%.
By adopting the technical scheme, the polymerization agent is prevented from being formed in advance, and the silk thread is prevented from being adhered to equipment.
The invention has the beneficial effects that: .
1. The protein additive is added into a PET/PA66 blending system, the protein additive is short-chain polypeptide generated by hydrolysis in animal and vegetable protein, the polypeptide can perform ester exchange and amine ester exchange reaction and is embedded into molecular chains of the PET and the PA66, the compatibility between the PET and the PA66 is improved, the more excellent protein additive is an animal hoof horn type protein foaming agent, the animal hoof type protein foaming agent contains more cystine and cysteine, the decrosslinking/crosslinking reaction can be performed continuously at a smelting temperature, the compatibility is higher, and the fiber blended by the animal hoof type protein foaming agent has better toughness and strength.
2. The gum rosin and the amino silicone oil have carboxyl and amino and have the capability of performing ester exchange and amine ester exchange reaction, but the effect is poor, and basically, the better effect on compatibilization cannot be achieved.
3. The melamine and the polypropylene grafted maleic anhydride are used for adjusting the effect of the protein foaming agent, and the groups contained in the melamine and the polypropylene grafted maleic anhydride can replace the interaction between a macromolecular chain and the protein foaming agent in the blending process, so that the time of the protein foaming agent for achieving a compatibilization effect is prolonged, and the phenomenon that the protein foaming agent is subjected to a too-early and too-fast violent reaction to form a micelle which is difficult to disperse and has an adverse effect on the use of the protein foaming agent is avoided.
4. And the polymerization agent is added, so that the surface viscosity of the silk thread gradually rises after contacting with moisture in the air and disappears after contacting with a large amount of moisture, the surface viscosity of the silk thread can be increased and then reduced, better viscosity is provided in the needling stage, and the needling effect is enhanced.
Detailed Description
The technical solutions in the examples will be clearly and completely described below.
Example 1
A preparation process of tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices, 26 parts of polyhexamethylene adipamide and 7.2 parts of gum rosin into melting equipment for melting, adding 2.5 parts of protein additives, 8.5 parts of amino silicone oil, 1.3 parts of tetrabutyl titanate and maleic anhydride equivalent to 4.5 parts of acetic acid after melting, quickly and uniformly stirring, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing the filaments, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 13.5 parts;
polypropylene grafted maleic anhydride: 1.75 parts;
melamine: 2.2 parts.
Example 2
A preparation process of tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 100 parts of PET slices, 28 parts of polyhexamethylene adipamide and 5 parts of gum rosin into a melting device for melting, adding 3 parts of protein additives, 6 parts of amino silicone oil, 2.5 parts of tetrabutyl titanate and maleic anhydride equivalent to 3 parts of acetic acid after melting, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging the silk: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 15 parts of a mixture;
polypropylene grafted maleic anhydride: 1.5 parts;
melamine: 2.5 parts.
Example 3
A preparation process of a tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 120 parts of PET slices, 20 parts of polyhexamethylene adipamide and 8 parts of gum rosin into a melting device for melting, adding 1.5 parts of protein additives, 18 parts of amino silicone oil, 2 parts of tetrabutyl titanate and maleic anhydride equivalent to 5 parts of acetic acid after melting, and then filtering through a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 10 parts of (A);
polypropylene grafted maleic anhydride: 2 parts of (1);
melamine: and 2 parts.
Example 4
A preparation process of a tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices, 26 parts of polyhexamethylene adipamide and 7.2 parts of gum rosin into melting equipment for melting, adding 2.5 parts of protein additives, 8.5 parts of amino silicone oil and maleic anhydride equivalent to 4.5 parts of acetic acid after melting, quickly and uniformly stirring, and then filtering through a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, and cooling tows through side air blowing while drawing;
s4, swinging: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 13.5 parts;
polypropylene grafted maleic anhydride: 1.75 parts;
melamine: 2.2 parts.
Example 5
A preparation process of tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices, 26 parts of polyhexamethylene adipamide and 7.2 parts of gum rosin into melting equipment for melting, adding 2.5 parts of protein additives, 8.5 parts of amino silicone oil and 1.3 parts of tetrabutyl titanate after melting, uniformly stirring, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing the filaments, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging the silk: s3, scattering tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 13.5 parts;
polypropylene grafted maleic anhydride: 1.75 parts;
melamine: 2.2 parts.
Example 6
A preparation process of tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices, 26 parts of polyhexamethylene adipamide and 7.2 parts of gum rosin into melting equipment for melting, adding 2.5 parts of protein additives, 8.5 parts of amino silicone oil, 1.3 parts of tetrabutyl titanate and citric anhydride equivalent to 4.5 parts of acetic acid after melting, quickly and uniformly stirring, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing the filaments, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging the silk: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns by a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 13.5 parts;
polypropylene grafted maleic anhydride: 1.75 parts;
melamine: 2.2 parts.
Example 7
A preparation process of tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices, 26 parts of polyhexamethylene adipamide and 7.2 parts of gum rosin into a melting device for melting, adding 2.5 parts of protein additives, 8.5 parts of amino silicone oil, 1.3 parts of tetrabutyl titanate and maleic anhydride equivalent to 4.5 parts of acetic acid after melting, quickly stirring uniformly, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging: s3, scattering tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns by a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
soybean protein foaming agent: 13.5 parts;
polypropylene grafted maleic anhydride: 1.75 parts;
melamine: 2.2 parts.
Comparative example 1
A preparation process of a tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices, 26 parts of polyhexamethylene adipamide and 7.2 parts of gum rosin into melting equipment for melting, adding 8.5 parts of amino silicone oil, 1.3 parts of tetrabutyl titanate and maleic anhydride equivalent to 4.5 parts of acetic acid after melting, quickly and uniformly stirring, and then filtering through a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing the filaments, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging the silk: s3, scattering tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns by a needle machine to obtain a finished non-woven fabric.
Comparative example 2
A preparation process of a tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices, 26 parts of polyhexamethylene adipamide and 7.2 parts of gum rosin into melting equipment for melting, adding 2.5 parts of protein additives, 1.3 parts of tetrabutyl titanate and maleic anhydride equivalent to 4.5 parts of acetic acid after melting, quickly and uniformly stirring, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing the filaments, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns by a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 13.5 parts;
polypropylene grafted maleic anhydride: 1.75 parts;
melamine: 2.2 parts.
Comparative example 3
A preparation process of tough needle-punched non-woven fabric comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices and 26 parts of polyhexamethylene adipamide into a melting device for melting, adding 2.5 parts of protein additives, 8.5 parts of amino silicone oil, 1.3 parts of tetrabutyl titanate and maleic anhydride equivalent to 4.5 parts of acetic acid after melting, quickly and uniformly stirring, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, cooling tows through cross air blowing while drawing the filaments, and controlling the air humidity of the cross air blowing to be less than 50%;
s4, swinging the silk: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns by a needle machine to obtain a finished non-woven fabric.
The protein surfactant comprises the following components:
animal hoof keratin foaming agent: 13.5 parts;
polypropylene grafted maleic anhydride: 1.75 parts;
melamine: 2.2 parts.
Comparative example 4
The method adopts the prior art and comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding 110 parts of PET slices and 26 parts of polyhexamethylene adipamide into a melting device for melting, and then filtering by a melt filter, wherein the filtering precision of the melt filter is 40 mu m;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, and cooling tows through side blowing while drawing;
s4, swinging: s3, scattering tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
All examples and comparative examples were sampled and tested according to the protocol described in GB/T17639-2008 geosynthetic filament spunbond needle punched non-woven geotextile, and the results are given in the following table, where the nominal breaking strength is set to 50kN/m, and the cross machine direction elongation in the table also becomes the cross machine direction elongation at that strength, and when the cross machine direction breaking strength is less than 50kN/m, the elongation at break is recorded:
TABLE 1 table for measuring physical properties
As can be seen from the table, examples 1 to 3 are far superior to the other examples and comparative examples in that the fiber spun in comparative example 1 without the addition of the protein-based admixture was hardly regarded as unusable as compared with the fiber spun without the addition of the protein-based admixture. And comparative example 3 in which no gum rosin was added were greatly different from the examples in performance, in the experiments of the applicant, if the strength was to be enhanced to a level similar to that of example 1, it was necessary to increase the addition amount of the amino silicone oil and the protein admixture by 2 to 4 times. Comparative example 2 and comparative example 3, in which no amino silicone oil was added, were similar to example 1 in that the addition amounts of gum rosin and protein-based admixture were increased by three times or more, the weather resistance was inferior to example 1, and the spinning speed was about 10% slower than that of example 1 at the same spinning pressure.
Compared with the example 1, the example 4 without the addition of the polymerization agent has the advantages that the transverse and longitudinal breaking strength is reduced, the transverse and longitudinal elongation is improved, and the visual expression is that the product is much softer; on the other hand, in example 5 in which no polycarboxylic acid compound was added, the data show that the respective values are excellent, but the values of the elongation in the transverse and longitudinal directions and the CBR bursting strength show that the nonwoven fabric has become hard and brittle, the toughness is reduced, and the use is inconvenient to some extent.
Example 6, using citric acid, produced no significant defects compared to example 1, indicating that the reaction was predominantly dependent on the number of carboxyl groups. The values for example 7 using soy protein hydrolysate foaming agent are somewhat lower than those of example 1 using foaming agent produced by hydrolysis of animal hoof keratin, indicating a preferred choice for animal hoof keratin foaming agent.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, shall fall within the scope of protection of the present invention.
Claims (5)
1. A tough type needle-punched non-woven fabric is characterized in that: the composition comprises the following components in parts by mass:
PET slicing: 100-120 parts;
polyhexamethylene adipamide: 20-28 parts;
gum rosin: 5-8 parts;
protein additives: 1.5-3 parts;
amino silicone oil: 6-18 parts;
the protein additive comprises the following components:
protein foaming agent: 10-15 parts;
polypropylene grafted maleic anhydride: 1.5-2 parts;
melamine: 2-2.5 parts;
the protein foaming agent is an animal hoof keratin foaming agent;
the polymerization agent is one of trimethoxy silane or polyaluminium or tetrabutyl titanate, and the addition amount of the polymerization agent is 2-2.5 parts;
the preparation process comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding PET slices, polyhexamethylene adipamide and gum rosin into a melting device for melting, adding a protein additive, amino silicone oil, a polymerization agent and polycarboxylic acid after melting, quickly stirring uniformly, and filtering through a melt filter;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, and cooling tows through side air blowing while drawing;
s4, swinging: s3, scattering the tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns by a needle machine to obtain a finished non-woven fabric.
2. A tough needle-punched non-woven fabric according to claim 1, wherein: the polycarboxycarboxylic acid comprises anhydride of one or more of malic acid, citric acid, tartaric acid and maleic acid or anhydride obtained by mutually dehydrating and condensing any acid, and the addition amount is 3-5 parts by mass of acetic acid converted into the equivalent carboxyl amount according to the amount of carboxyl generated by hydrolysis of the added substances.
3. A process for preparing a tough type needle-punched non-woven fabric according to claim 1, which comprises: the method comprises the following steps:
s1, drying: drying all raw materials until the final water content is less than 35ppm;
s2, melting: feeding PET slices, polyhexamethylene adipamide and gum rosin into a melting device for melting, adding a protein additive, amino silicone oil, a polymerization agent and polycarboxylic acid after melting, quickly stirring uniformly, and filtering through a melt filter;
s3, wire drawing: drawing the melt obtained in the melting step S2 through a spinning box, and cooling tows through side blowing while drawing;
s4, swinging: s3, scattering tows obtained in the wire drawing, and paving the tows on a transmission net curtain;
s5, needling: and S4, needling the net-shaped non-woven fabric laid in the swing yarns through a needle machine to obtain a finished non-woven fabric.
4. The process for preparing a tough type needle punched non-woven fabric according to claim 3, wherein: in S2, the filtration precision of the melt filter is not more than 40 μm.
5. The process for preparing a tough type needle punched non-woven fabric according to claim 3, wherein: in the S3, when the polymerization agent is added in the step S2, the air humidity of the cross air blow is controlled to be less than 50%.
Priority Applications (1)
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| CN108660528A (en) * | 2018-05-18 | 2018-10-16 | 江苏江南高纤股份有限公司 | Super imitative cotton wool item of polyester modification and preparation method thereof |
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