CN111851088A - Flame-retardant moisture-proof plastic woven fabric and preparation method thereof - Google Patents
Flame-retardant moisture-proof plastic woven fabric and preparation method thereof Download PDFInfo
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- CN111851088A CN111851088A CN202010778610.XA CN202010778610A CN111851088A CN 111851088 A CN111851088 A CN 111851088A CN 202010778610 A CN202010778610 A CN 202010778610A CN 111851088 A CN111851088 A CN 111851088A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
- D06N3/186—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials one of the layers is on one surface of the fibrous web and the other layer is on the other surface of the fibrous web
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- 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
- D01F1/04—Pigments
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- 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
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
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- 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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- 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
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
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- 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
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0006—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using woven fabrics
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0038—Polyolefin fibres
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
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Abstract
A flame-retardant moisture-proof plastic woven fabric and a preparation method thereof belong to the technical field of plastic woven fabrics. The fabric sequentially comprises an upper coating, a base fabric layer and a lower coating from top to bottom; the coating amount of the upper coating is 27-33 g/m2(ii) a The coating amount of the lower coating is 27-33 g/m2(ii) a The upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64 to 64.5% of LDPE resin and 18.5 to 1% of polyolefin elastomer9.3% of coupling agent, 3.5-4% of light stabilizer, 4-4.5% of first flame retardant, 7.5-7.8% of first flame retardant, 0.3-1% of lubricant and 0.1-0.7% of filler; the preparation method comprises the following steps: 1) mixing flat wires; 2) drawing wires; 3) weaving; 4) and (4) coating. The flame-retardant moisture-proof plastic woven fabric has the advantages of good leakage-proof and moisture-proof properties, excellent flame-retardant performance and difficulty in leakage when heavy objects are placed.
Description
Technical Field
A device and a method for preparation belong to the technical field of plastic woven cloth.
Background
The plastic woven cloth is a cloth-shaped object formed by interweaving warp yarns and weft yarns made of plastic materials. The plastic woven fabric can be woven into different thicknesses, compactness and tensile strength according to different application ranges. In the prior art, plastic woven fabrics are often used for manufacturing woven bags for containers, such as container lining bags and container hoisting bags, and are used for transporting different goods, such as grains, woods, ores and solid chemical raw materials.
The applicant found in research that the existing plastic woven cloth has the following problems when used as a woven bag for a container: when the woven bag for the container is commonly used for containing deliquescent, inflammable and oxidizable chemical raw materials, the problems of powder leakage, moisture caking and even smoking and combustion often occur. Powder leakage, i.e., dirtying of the package and environmental pollution. Chemical raw materials are easy to agglomerate due to moisture, so that the quality of the chemical raw materials is damaged, and economic loss is brought to customers. And the chemical raw materials are smoked and burned, so that not only can economic loss be brought to customers, but also potential safety hazards exist.
Although the prior art has a design of coating the surface of the woven fabric, the following problems exist: firstly, the coating has poor light shading performance, and light penetrates through the woven cloth, so that the contained chemical raw materials are decomposed by illumination and even burn to cause fire; secondly, the coating has unsatisfactory sealing performance and is easy to crack after being lifted and pulled under force, so that powder in the woven bag leaks and chemical raw materials contained in the woven bag are wetted and agglomerated. And thirdly, the flame retardant property of the coating is poor, if the coating is difficult to quickly retard flame when a fire occurs, and potential safety hazards exist when inflammable or combustion-supporting articles are contained in the container bag.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art, and provides flame-retardant moisture-proof plastic woven cloth and preparation thereofBy the method, the flame-retardant moisture-proof plastic woven fabric has good leakage and moisture-proof characteristics, is excellent in flame-retardant performance, and is not easy to leak when heavy objects are placed. The technical scheme adopted by the invention for solving the technical problems is as follows: the flame-retardant moisture-proof plastic woven fabric is characterized in that: the fabric sequentially comprises an upper coating, a base fabric layer and a lower coating from top to bottom; the coating amount of the upper coating is 27-33 g/m2(ii) a The coating amount of the lower coating is 27-33 g/m2；
The upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64-64.5% of LDPE resin, 18.5-19.3% of polyolefin elastomer, 3.5-4% of coupling agent, 4-4.5% of light stabilizer, 7.5-7.8% of first flame retardant, 0.3-1% of lubricant and 0.1-0.7% of filler;
the base cloth layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 8.3-9.6 parts of HDPE resin, 1-2 parts of light stabilizer, 2.5-3 parts of second flame retardant, 0.1-0.7 part of pigment carbon black and 0.4-0.7 part of lubricant.
Preferably, the upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64.1% of LDPE resin, 18.9% of polyolefin elastomer, 3.8% of coupling agent, 4.3% of light stabilizer, 7.6% of first flame retardant, 0.8% of lubricant and 0.5% of filler.
Preferably, the base cloth layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 9 parts of HDPE resin, 1.4 parts of light stabilizer, 2.7 parts of second flame retardant, 0.6 part of pigment carbon black and 0.5 part of lubricant.
The coupling agent is gamma-methacryloxypropyltrimethoxysilane (abbreviated as silane coupling agent G-570) and isopropyl tri (dioctyl pyrophosphato acyloxy) titanate (abbreviated as titanate coupling agent NDZ-201) according to the weight ratio of 1: 2 to 3.
The first flame retardant is tris (2, 3-dichloropropyl) phosphate (abbreviated as flame retardant TDCPP), resorcinol bis (diphenyl phosphate) (abbreviated as flame retardant RDP) and antimony trioxide in a weight ratio of 1: 2-3: 2, mixing the mixture.
The second flame retardant is tris (2, 3-dichloropropyl) phosphate and resorcinol bis (diphenyl phosphate) according to the weight ratio of 1: 2-3 of a mixture.
The filler is pigment carbon black or/and titanium dioxide.
The light stabilizer is at least one of 2, 4-dihydroxy benzophenone (abbreviated as ultraviolet absorber UV-0), bis-2, 2,6, 6-tetramethylpiperidinol sebacate (abbreviated as light stabilizer 770) and didecyl glycol thiodipropionate (abbreviated as antioxidant DLTDP).
The lubricant is polyethylene wax.
The preparation method of the flame-retardant moisture-proof plastic woven fabric is characterized by comprising the following steps of:
1) mixing flat wires: weighing PP resin, HDPE resin, light stabilizer, second flame retardant, pigment carbon black and dispersant according to the weight parts, putting into a batching machine, mixing at normal temperature, and drying to obtain a flat filament raw material;
2) drawing: putting a flat filament raw material into an extruder, heating to 260-265 ℃, extruding and mixing by a screw rod, and extruding a film in a molten state; cooling the film by water, and then drawing, slitting, stretching at 170-175 ℃, shaping at 95-100 ℃, and rolling to obtain flat filaments; the width of the flat filament is 3-6 mm, and the fineness of the flat filament is 800-1800 denier;
3) weaving: weaving the flat filaments into a base cloth layer according to a plain weave, wherein the warp and weft density is 14-16 warps/cm multiplied by 14-16 wefts/cm;
4) coating: weighing the polyolefin elastomer, the coupling agent, the light stabilizer, the first flame retardant, the lubricant and the filler according to the weight percentage, putting the materials into a batching machine, heating the materials to 110-130 ℃, stirring and mixing the materials for 10-15 minutes to obtain a premix; adding LDPE resin and PE resin into the premix according to the weight percentage, heating to 270-295 ℃, and stirring and mixing to obtain a coating material; and coating the coating material on the upper surface and the lower surface of the base fabric layer, rolling, cooling and shaping to form an upper coating and a lower coating.
The invention is described below:
the normal temperature in the step 1) is 10-35 ℃.
And 2) setting the speed of the vehicle in the step 2) to be 340-400 m/min.
In the molten state extruded film in the step 2), the film traction ratio is 1: 5.5.
in the step 2), water temperature is 28-32 ℃ in the water cooling;
and 2) heating and stretching in an oven, wherein the stretching multiple is 5.5, and the stretching speed is 260-280 m/min.
Preferably, the width of the flat filament in the step 2) is 4.5-5.5 mm, and the fineness of the flat filament is 1500-1800 denier.
Preferably, the equipment used in the step 4) is a film coating machine. Preferably, the coating temperature in the step 4) is the heating temperature in the step 4).
Preferably, the loom used for weaving in step 3) is a circular loom. The warp and weft density of the step 3) is 15 warps/cm multiplied by 15 wefts/cm.
Compared with the prior art, the invention has the beneficial effects that:
1. the flame-retardant moisture-proof plastic woven fabric has good leakage and moisture-proof characteristics and excellent flame-retardant performance. The invention adopts tris (2, 3-dichloropropyl) phosphate and resorcinol bis (diphenyl phosphate) according to the weight ratio of 1: 2-3, and has synergistic effect on flame retardance. The applicant finds that the flame retardant effect can be further improved by adding the antimony trioxide; if an inorganic flame retardant containing hydroxyl such as aluminum hydroxide and magnesium hydroxide is added, water is released in the flame retardant process, and the water can chemically or physically react with active chemical raw materials (such as manganese dioxide) stored in the bag, so that the chemical raw materials deteriorate or deliquesce; and antimony trioxide can form a film on the surface to isolate oxygen and block heat conduction to realize flame retardance during combustion, and the antimony trioxide is difficult to react with flammable active chemical raw materials even if gasified during high-temperature combustion. However, the addition amount of the antimony trioxide is not easy to be excessive, and the excessive addition can affect the strength and the elongation at break of the coating layer, so the applicant designs the first flame retardant to be tris (2, 3-dichloropropyl) phosphate, resorcinol bis (diphenyl phosphate) and antimony trioxide in a weight ratio of 1: 2-3: 2, the antimony trioxide, the tris (2, 3-dichloropropyl) phosphate and the resorcinol bis (diphenyl phosphate) are matched according to the proportion, so that the synergistic effect is achieved, and the elongation at break of the coating layer is not obviously influenced. The applicant adopts the second flame retardant in the flat filament to avoid antimony trioxide from influencing the strength of the base fabric layer, so that the load-carrying performance of the flame-retardant moisture-proof plastic woven fabric is improved. The applicant adopts the first flame retardant in the upper coating and the lower coating for flame retardance, and the high-flame-retardant damp-proof plastic woven fabric can reach the flame-retardant grade V-0.
2. When the flame-retardant moisture-proof plastic woven cloth disclosed by the invention is used for containing heavy objects, the coating is not easy to crack and leak. The coupling agent is added into the upper coating and the lower coating, and is suitable for containing solid powder goods. The gamma-methacryloxypropyltrimethoxysilane and the isopropyl tri (dioctyl pyrophosphato acyloxy) titanate are used in a combined manner, and the gamma-methacryloxypropyltrimethoxysilane contains an acidic functional group, can be firmly combined with an inorganic filler, a polyolefin elastomer and LDPE resin, plays a role in a bridge and obviously improves the elongation at break and the strength of the plastic woven fabric. The isopropyl tri (dioctyl pyrophosphato acyloxy) titanate has low activity of ester exchange reaction and no initial viscosity effect, so that the dispersibility at the initial heating stage is better, the filling amount of the coupling agent can be increased, and the gamma-methacryloxypropyl trimethoxy silane is assisted to be uniformly combined, so that the elongation at break of the upper coating and the lower coating is improved, the coating is prevented from cracking in the loading process of the flexible freight bag, and the leakage of solid powder is avoided.
3. The flame-retardant moisture-proof plastic woven fabric has a good light-proof characteristic. Applicants have found that in the prior art only pigment whiskers are added to the base fabric, and often not to the coating. But there is the photic problem in the seam of weaving of flat silk, when the flexible container held the chemical raw materials of photosensitive, current mould to weave the cloth light transmissivity too high, the chemical raw materials who holds easily receive the illumination and decompose. The pigment carbon black or/and titanium dioxide is added in the raw materials of the upper coating and the lower coating to be used as a filler, so that the light shading effect is better, and the light transmittance is less than or equal to 0.01 percent.
4. The preparation method of the flame-retardant moisture-proof plastic woven fabric can further improve the strength and the elongation at break of the plastic woven fabric. In the step 4), the polyolefin elastomer, the coupling agent, the light stabilizer, the first flame retardant, the lubricant and the filler are heated and mixed to obtain the premix so as to promote the combination of the coupling agent, the polyolefin elastomer and the inorganic material, the LDPE resin and the PE resin are added for heating and mixing to obtain the molten coating material, and the strength and the elongation at break of the plastic woven fabric can be improved after the coating.
Detailed Description
The method of the present invention will be further described with reference to the following specific examples, wherein example 1 is the best example.
Step 1) the equipment used for mixing the flat filaments is as follows: a weighing type dosing machine; equipment manufacturers: austrian tailingge plastic machinery ltd; the equipment model is as follows: TEC 705;
step 2) the equipment used for wire drawing is as follows: a plastic flat wire drawing unit; equipment manufacturers: austrian tailingge plastic machinery ltd; the equipment model is as follows: EX 800S;
step 3) the equipment used for weaving is as follows: plastic flat filament circular loom; equipment manufacturers: austrian tailingge plastic machinery ltd; the equipment model is as follows: RX 8.0;
step 4), the equipment used for coating is as follows: plastic woven cloth film coating machine, manufacturer: shantou Yuandong Equipment Co., Ltd; the model is as follows: SJ-FM-2200;
LDPE resin, academic name: low density polyethylene, produced by the ministry of energy limited liability company, trade mark: LD251, melt index (190 ℃/2.16 kg) 7.0 g/min, density 0.918 g/cm3；
Polyolefin elastomer (abbreviated as POE), available from exxon mobil corporation, dadmami 6202; density 0.863g/cm3The melt index (190 ℃/2.16 kg) is 20g/min, the softening point is 47.2 ℃, the ethylene content is 15wt percent, and the elongation at break is more than 2000 percent;
PP resin, academic name: polypropylene, manufactured by SK corporation, korea, product number H730F, melt index 3.5g/10min, heat distortion temperature 105 ℃, vicat softening point 152 ℃;
HDPE resin, Dow chemical China, HDPE 17450N, density 0.95g/cm3, melt index (190 ℃/2.16 kg) 17g/min, environmental stress crack resistance (50 ℃) 300 hr;
antimony trioxide, Shandong Taxing New Material Co., Ltd, type HT-105, active substance content 99.5%;
titanium dioxide, inorganic chemical company of Meili union, rutile type, nanometer titanium dioxide, Cat number R69;
pigment carbon black, produced by Mitsubishi chemical corporation, pigment carbon black MA 100;
polyethylene wax, produced by honeywell, polyethylene wax AC-6A;
2, 4-dihydroxybenzophenone (abbreviated as UV absorber UV-0) CAS No.: 131-56-6; the Shanghai Michelin Biochemical technology Limited, the content is more than 99%;
bis-2, 2,6, 6-tetramethylpiperidinol sebacate (abbreviated as light stabilizer 770); the Shanghai Mielin Biochemical technology Limited company, the content is more than 98 percent;
the content of the thiodipropionate bisdodecyl ester (abbreviated as antioxidant DLTDP) produced by Shanghai Michelin Biochemical technology Limited company is more than 90 percent;
gamma-methacryloxypropyltrimethoxysilane (abbreviated as silane coupling agent G-570), Shanghai Allantin Biotech Ltd., 97%;
isopropyl tris (dioctyl pyrophosphate acyloxy) titanate (abbreviated as titanate coupling agent NDZ-201), a content of more than 98% by Tianjin Xiansi Biochemical technology Limited;
tris (2, 3-dichloropropyl) phosphate (abbreviated as flame retardant TDCPP), wuhanfeng blaze isochoria chemicals ltd;
resorcinol bis (diphenyl phosphate) (abbreviated as flame retardant RDP) produced by Farinkage trading Limited company in the coastal market is more than or equal to 98 percent.
Example 1
The flame-retardant moisture-proof plastic woven fabric comprises an upper coating, a base fabric layer and a lower coating from top to bottom in sequence;
the upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64.1 percent of LDPE resin, 18.9 percent of polyolefin elastomer, coupling agent [ silane coupling agent G-570 and titanate coupling agent NDZ-201 in a weight ratio of 1: 3 mixture 3.8 percent, light stabilizer [ light stabilizer 770 and antioxidant DLTDP according to the weight ratio of 3: 1 mixture ]4.3%, a first flame retardant [ flame retardant TDCPP, flame retardant RDP and antimony trioxide in a weight ratio of 1: 2.6: 2 mixture ]7.6%, polyethylene wax 0.8%, and filler [ pigment carbon black and titanium dioxide powder by weight ratio of 3: 1 mix ] 0.5%;
the base cloth layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 9 parts of HDPE resin, and a light stabilizer [ light stabilizer 770 and antioxidant DLTDP in a weight ratio of 3: 1]1.4 parts of a second flame retardant [ flame retardant TDCPP and flame retardant RDP in a weight ratio of 1: 2.6 mixing ]2.7 parts, 0.6 part of pigment carbon black and 0.5 part of polyethylene wax;
the preparation method of the flame-retardant moisture-proof plastic woven fabric comprises the following steps:
1) mixing flat wires: weighing PP resin, HDPE resin, light stabilizer, second flame retardant, pigment carbon black and dispersant according to the weight parts, putting into a batching machine, mixing at 25-35 ℃, and drying to obtain a flat filament raw material;
2) drawing: putting a flat filament raw material into an extruder, heating to 260 ℃, extruding and mixing by a screw, extruding a film in a molten state, wherein the film traction ratio is 1: 5.5; cooling the film by water, drawing by 5.5 times at 28-32 ℃ by using cooling water, cutting into filaments, heating and drawing in an oven at 170 ℃ at a drawing speed of 270 m/min, shaping at 95 ℃, rolling at a shaping speed of 340m/min to obtain flat filaments; the width of the flat filament is 5mm, and the fineness of the flat filament is 1700 denier;
3) weaving: weaving flat filaments into a base cloth layer according to plain weave, wherein the warp and weft adopt the same kind of flat filaments, and the warp and weft density is 15 warps/cm multiplied by 15 wefts/cm;
4) coating: weighing the polyolefin elastomer, the coupling agent, the light stabilizer, the first flame retardant, the lubricant and the filler according to the weight percentage, putting the materials into a proportioning machine, heating the materials to 120 ℃, stirring and mixing the materials for 10 to 15 minutes to obtain a premix; adding LDPE resin and PE resin into the premix according to weight percentage, heating to 280-290 ℃, and stirring and mixing to obtain a coating material; coating the coating material on the upper and lower surfaces of the base fabric layer, rolling, cooling and shaping to form an upper coating layer and a lower coating layer, wherein the coating amount of the upper coating layer is 30g/m2(ii) a The coating amount of the under coat layer was 30g/m2(ii) a And obtaining the flame-retardant moisture-proof plastic woven fabric.
Example 2
The flame-retardant moisture-proof plastic woven fabric comprises an upper coating, a base fabric layer and a lower coating from top to bottom in sequence;
the upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64% of LDPE resin, 19.3% of polyolefin elastomer, coupling agent [ silane coupling agent G-570 and titanate coupling agent NDZ-201 in a weight ratio of 1: 2.2 mixing 3.5 percent, light stabilizer (ultraviolet absorbent UV-0 and antioxidant DLTDP according to the weight ratio of 1: 1 mixture ]4%, a first flame retardant [ flame retardant TDCPP, flame retardant RDP and antimony trioxide in a weight ratio of 1: 2: 2, mixing ]7.8%, 1% of polyethylene wax and 0.4% of filler [ titanium dioxide ];
the base cloth layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 8.3 parts of HDPE resin, and a light stabilizer [ ultraviolet absorbent UV-0 and antioxidant DLTDP in a weight ratio of 1: 1 and 2 parts of a second flame retardant (flame retardant TDCPP and flame retardant RDP) in a weight ratio of 1: 2 mixing ]3 parts, 0.7 part of pigment carbon black and 0.4 part of polyethylene wax;
the preparation method of the flame-retardant moisture-proof plastic woven fabric comprises the following steps:
1) mixing flat wires: weighing PP resin, HDPE resin, light stabilizer, second flame retardant, pigment carbon black and dispersant according to the weight parts, putting into a batching machine, mixing at 10-20 ℃, and drying to obtain a flat filament raw material;
2) drawing: putting a flat filament raw material into an extruder, heating to 265 ℃, extruding and mixing by a screw, extruding a film in a molten state, wherein the film traction ratio is 1: 5.5; cooling the film by water, drawing by 5.5 times at 28-32 ℃ by using cooling water, cutting into filaments, heating and drawing by using a 175 ℃ oven at a drawing speed of 270 m/min, shaping at 95 ℃, rolling at a shaping speed of 360m/min to obtain flat filaments; the width of the flat filament is 5.5mm, and the fineness of the flat filament is 1800 denier;
3) weaving: weaving flat filaments into a base cloth layer according to plain weave, wherein the warp and weft adopt the same kind of flat filaments, and the warp and weft density is 14 warps/cm multiplied by 14 wefts/cm;
4) coating: weighing the polyolefin elastomer, the coupling agent, the light stabilizer, the first flame retardant, the lubricant and the filler according to the weight percentage, putting the materials into a proportioning machine, heating the materials to 110 ℃, stirring and mixing the materials for 13 minutes to obtain a premix; adding LDPE resin and PE resin into the premix according to the weight percentage, heating to 285-295 ℃, and stirring and mixing to obtain a coating material; coating the coating material on the surfaceRolling, cooling and shaping the upper surface and the lower surface of the base cloth layer to form an upper coating layer and a lower coating layer, wherein the coating amount of the upper coating layer is 27g/m2(ii) a The coating weight of the lower coating was 27g/m2(ii) a And obtaining the flame-retardant moisture-proof plastic woven fabric.
Example 3
The flame-retardant moisture-proof plastic woven fabric comprises an upper coating, a base fabric layer and a lower coating from top to bottom in sequence;
the upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64.5 percent of LDPE resin, 18.5 percent of polyolefin elastomer, and coupling agent [ silane coupling agent G-570 and titanate coupling agent NDZ-201 in a weight ratio of 1: 3 mix ]4%, light stabilizer [ light stabilizer 770: antioxidant DLTDP according to the weight ratio of 2: 1]4.5%, and a first flame retardant [ which is a flame retardant TDCPP, a flame retardant RDP and antimony trioxide in a weight ratio of 1: 2.2: 2 mixture ]7.5%, polyethylene wax 0.3%, and filler [ pigment carbon black and titanium dioxide powder in a weight ratio of 3: 1 mix ] 0.7%;
the base cloth layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 9.6 parts of HDPE resin, and a light stabilizer [ light stabilizer 770: antioxidant DLTDP according to the weight ratio of 2: 1]1.2 parts of a second flame retardant [ flame retardant TDCPP and flame retardant RDP in a weight ratio of 1: 2.2 mixing ]2.5 parts, 0.1 part of pigment carbon black and 0.7 part of polyethylene wax;
the preparation method of the flame-retardant moisture-proof plastic woven fabric comprises the following steps:
1) mixing flat wires: weighing PP resin, HDPE resin, light stabilizer, second flame retardant, pigment carbon black and dispersant according to the weight parts, putting into a batching machine, mixing at 25-35 ℃, and drying to obtain a flat filament raw material;
2) drawing: putting a flat filament raw material into an extruder, heating to 260 ℃, extruding and mixing by a screw, extruding a film in a molten state, wherein the film traction ratio is 1: 5.5; cooling the film by water, drawing the film by 5.5 times at 28-32 ℃ by using cooling water, cutting the film into filaments, heating and drawing the filaments in a 175 ℃ oven at a drawing speed of 260 m/min, shaping at 100 ℃, rolling at a shaping speed of 400m/min to obtain flat filaments; the width of the flat filament is 4.5mm, and the fineness of the flat filament is 1700 denier;
3) weaving: weaving flat filaments into a base cloth layer according to plain weave, wherein the warp and weft adopt the same kind of flat filaments, and the warp and weft density is 16 warps/cm multiplied by 16 wefts/cm;
4) coating: weighing the polyolefin elastomer, the coupling agent, the light stabilizer, the first flame retardant, the lubricant and the filler according to the weight percentage, putting the materials into a proportioning machine, heating the materials to 110-130 ℃, stirring and mixing the materials for 10 minutes to obtain a premix; adding LDPE resin and PE resin into the premix according to weight percentage, heating to 270-280 ℃, and stirring and mixing to obtain a coating material; coating the coating material on the upper and lower surfaces of the base fabric layer, rolling, cooling and shaping to form an upper coating layer and a lower coating layer, wherein the coating amount of the upper coating layer is 27g/m2(ii) a The coating amount of the under coat layer was 33g/m2(ii) a And obtaining the flame-retardant moisture-proof plastic woven fabric.
Example 4
The flame-retardant moisture-proof plastic woven fabric comprises an upper coating, a base fabric layer and a lower coating from top to bottom in sequence;
the upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64.3 percent of LDPE resin, 19.1 percent of polyolefin elastomer, coupling agent [ silane coupling agent G-570 and titanate coupling agent NDZ-201 in a weight ratio of 1: 2.8 mixture ]3.8%, light stabilizer [ light stabilizer 770]4.2%, first flame retardant [ flame retardant TDCPP, flame retardant RDP and antimony trioxide in a weight ratio of 1: 3: 2, mixing ]7.8%, 0.4% of polyethylene wax and 0.4% of filler [ pigment carbon black ];
the base cloth layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 9.3 parts of HDPE resin, 1 part of light stabilizer [ light stabilizer 770], and a second flame retardant [ flame retardant TDCPP and flame retardant RDP in a weight ratio of 1: 3 mixing ]2.8 parts, 0.4 part of pigment carbon black and 0.6 part of polyethylene wax;
the preparation method of the flame-retardant moisture-proof plastic woven fabric comprises the following steps:
1) mixing flat wires: weighing PP resin, HDPE resin, light stabilizer, second flame retardant, pigment carbon black and dispersant according to the weight parts, putting into a batching machine, mixing at 15-25 ℃, and drying to obtain a flat filament raw material;
2) drawing: putting a flat filament raw material into an extruder, heating to 265 ℃, extruding and mixing by a screw, extruding a film in a molten state, wherein the film traction ratio is 1: 5.5; cooling the film by water, drawing by 5.5 times at 28-32 ℃ by using cooling water, cutting into filaments, heating and drawing by using a 170 ℃ oven at a drawing speed of 280 m/min, shaping at 100 ℃, shaping at a shaping speed of 380m/min, and rolling to obtain flat filaments; the width of the flat wire is 5mm, and the fineness of the flat wire is 1500 denier;
3) weaving: weaving flat filaments into a base cloth layer according to plain weave, wherein the warp and weft adopt the same kind of flat filaments, and the warp and weft density is 15 warps/cm multiplied by 15 wefts/cm;
4) coating: weighing polyolefin elastomer, coupling agent, light stabilizer, first flame retardant, lubricant and filler according to weight percentage, putting the materials into a dosing machine, heating to 110-130 ℃, stirring and mixing for 15 minutes, adding LDPE resin and PE resin according to weight percentage, heating to 275-285 ℃, stirring and mixing to obtain a coating material; coating the coating material on the upper and lower surfaces of the base fabric layer, rolling, cooling and shaping to form an upper coating layer and a lower coating layer, wherein the coating amount of the upper coating layer is 33g/m2(ii) a The coating amount of the under coat layer was 31g/m2(ii) a And (5) obtaining the product.
Performance testing
1. Testing the performance of the flexible freight bag made of the flame-retardant moisture-proof plastic woven cloth:
the test was carried out according to the method for measuring the weight of the bulk bag GB/T10454-2000. Except for the sling, the flexible freight bag is made of flame-retardant moisture-proof plastic woven cloth for testing; the size of the flexible freight bag is 240cm long, 105cm wide and 105cm high; the loading weight of the flexible freight bag is 1000kg, SF 5: 1.
2. measuring the elongation at break of the flame-retardant moisture-proof plastic woven fabric:
1) elongation at break test method according to standard GBT 3923.1-2013. The apparatus used was: sitai instrument ST-S500 elongation at break tester. 2) And observing the upper coating and the lower coating of the plastic woven cloth after the plastic woven cloth is broken, and recording the number of the leaks. If the coating forms a leak due to stretching, the solid powder material can be leaked from the leak, and the less the leak, the better the leak-proof and moisture-proof effects of the plastic woven cloth are proved.
3. Testing the flame retardance of the flame-retardant moisture-proof plastic woven fabric:
according to the test method of the GB T2408-2008 plastic combustion performance test horizontal method and the vertical method standard-test method B vertical combustion test, the test sample of the flame-retardant moisture-proof plastic woven fabric is 125mm in length and 13mm in width, and the thickness is the thickness of the flame-retardant moisture-proof plastic woven fabric.
4. And (3) light transmittance test:
an LS116 light transmittance instrument produced by forestry science and technology is adopted to test the visible light transmittance, and the light source wave band is 380 nm-760 nm.
TABLE 1 results of performance testing of examples 1-4
As can be seen from table 1:
the flame-retardant moisture-proof plastic woven fabric has good load-carrying performance, can be used for manufacturing woven bags for containers, and has high elongation at break. Also, the test person in testing the elongation at break found by observation: in examples 1 to 4, the flat filaments of the base fabric layer were broken first and then the coating layer was broken. And even if the flame-retardant moisture-proof plastic woven cloth is broken by pulling, the surface of the coating has no cracks except the section. The characteristics ensure that the coating of the flame-retardant moisture-proof plastic woven fabric is not easy to crack and leak in the loading process, and the leakage of solid powdery goods is avoided.
The embodiment 1-4 can reach V-0 level flame retardant grade, and the load-carrying performance of the flexible freight bag is ensured.
The flame-retardant moisture-proof plastic woven fabric has the light-proof characteristic, has good shielding capability for visible light, and can be used for containing photosensitive chemical raw materials. The embodiment 2 is white, and the embodiments 1, 3 and 4 are black, so that different appearance requirements of customers can be met.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. Flame-retardant moisture-proof plastic woven fabricCharacterized in that: the fabric sequentially comprises an upper coating, a base fabric layer and a lower coating from top to bottom; the coating amount of the upper coating is 27-33 g/m2(ii) a The coating amount of the lower coating is 27-33 g/m2；
The upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64-64.5% of LDPE resin, 18.5-19.3% of polyolefin elastomer, 3.5-4% of coupling agent, 4-4.5% of light stabilizer, 7.5-7.8% of first flame retardant, 0.3-1% of lubricant and 0.1-0.7% of filler;
the base cloth layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 8.3-9.6 parts of HDPE resin, 1-2 parts of light stabilizer, 2.5-3 parts of second flame retardant, 0.1-0.7 part of pigment carbon black and 0.4-0.7 part of lubricant.
2. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein the upper coating and the lower coating are prepared from the following raw materials in percentage by weight: 64.1% of LDPE resin, 18.9% of polyolefin elastomer, 3.8% of coupling agent, 4.3% of light stabilizer, 7.6% of first flame retardant, 0.8% of lubricant and 0.5% of filler.
3. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein the base fabric layer is prepared from the following raw materials in parts by weight: 100 parts of PP resin, 9 parts of HDPE resin, 1.4 parts of light stabilizer, 2.7 parts of second flame retardant, 0.6 part of pigment carbon black and 0.5 part of lubricant.
4. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein: the coupling agent is gamma-methacryloxypropyltrimethoxysilane and isopropyl tri (dioctyl pyrophosphato acyloxy) titanate according to the weight ratio of 1: 2 to 3.
5. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein: the first flame retardant is tris (2, 3-dichloropropyl) phosphate, resorcinol bis (diphenyl phosphate) and antimony trioxide in a weight ratio of 1: 2-3: 2, mixing the mixture.
6. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein: the second flame retardant is tris (2, 3-dichloropropyl) phosphate and resorcinol bis (diphenyl phosphate) according to the weight ratio of 1: 2-3 of a mixture.
7. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein: the filler is pigment carbon black or/and titanium dioxide.
8. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein: the light stabilizer is at least one of 2, 4-dihydroxy benzophenone, bis-2, 2,6, 6-tetramethyl piperidinol sebacate and didodecyl thiodipropionate.
9. The flame-retardant moisture-proof plastic woven fabric according to claim 1, wherein: the lubricant is polyethylene wax.
10. The preparation method of the flame-retardant moisture-proof plastic woven fabric as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps:
1) mixing flat wires: weighing PP resin, HDPE resin, light stabilizer, second flame retardant, pigment carbon black and dispersant according to the weight parts, putting into a batching machine, mixing at normal temperature, and drying to obtain a flat filament raw material;
2) drawing: putting a flat filament raw material into an extruder, heating to 260-265 ℃, extruding and mixing by a screw rod, and extruding a film in a molten state; cooling the film by water, and then drawing, slitting, stretching at 170-175 ℃, shaping at 95-100 ℃, and rolling to obtain flat filaments; the width of the flat filament is 3-6 mm, and the fineness of the flat filament is 800-1800 denier;
3) weaving: weaving the flat filaments into a base fabric layer according to plain weave, wherein the warp and weft density is 14-16 multiplied by 14-16;
4) coating: weighing the polyolefin elastomer, the coupling agent, the light stabilizer, the first flame retardant, the lubricant and the filler according to the weight percentage, putting the materials into a batching machine, heating the materials to 110-130 ℃, stirring and mixing the materials for 10-15 minutes to obtain a premix; adding LDPE resin and PE resin into the premix according to the weight percentage, heating to 270-295 ℃, and stirring and mixing to obtain a coating material; and coating the coating material on the upper surface and the lower surface of the base fabric layer, rolling, cooling and shaping to form an upper coating and a lower coating.
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Effective date of registration: 20230406 Address after: Zhang Liang Village, Yuezhuang Town, Yiyuan County, Zibo City, Shandong Province, 256102 (200 meters south of the Village Committee) Patentee after: Shandong Xinye New Material Technology Co.,Ltd. Address before: 256100 Jingshan Road, Yiyuan County, Zibo City, Shandong Province, No. 74 Patentee before: SHANDONG XINGGUO XINLI PLASTICS TECHNOLOGY Co.,Ltd. |