CN104746499A - Fiber geotechnical cloth and preparation method thereof - Google Patents
Fiber geotechnical cloth and preparation method thereof Download PDFInfo
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- CN104746499A CN104746499A CN201510091173.3A CN201510091173A CN104746499A CN 104746499 A CN104746499 A CN 104746499A CN 201510091173 A CN201510091173 A CN 201510091173A CN 104746499 A CN104746499 A CN 104746499A
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- earthwork cloth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention relates to the technical field of geotechnical cloths, in particular to a fiber geotechnical cloth and a preparation method thereof. The preparation method sequentially comprises the following steps of A pretreatment, B opening, C alcoholysis, D decoloration and E weaving. According to the step of pretreatment, waste clothes are subjected to stain removal, disinfection and shearing treatment, and accordingly broken cloth blocks are obtained. According to the step of opening, the cut broken cloth blocks are subjected to opening treatment, so that bunchy fibers are obtained. According to the step of alcoholysis, the opened bunchy fibers are added into an alcohol and depolymerization catalyst for conducting alcoholysis treatment, depolymerized liquid slurry is separated from the fibers, and the separated fibers are cleaned up through water. According to the step of decoloration, the cleaned fibers are added with hydrogen peroxide and activated carbon for conducting decoloration treatment, the decolorized fibers are dried, and accordingly short fibers are obtained. According to the step of weaving, the dried short fibers are woven to obtain the fiber geotechnical cloth. According to the preparation method, the recycled waste clothes are manufactured into the fiber geotechnical cloth, the process is simple, operating control is convenient, the quality is stable, the production efficiency is high, and large-scale industrial production can be achieved.
Description
Technical field
The present invention relates to geotechnical process field, be specifically related to a kind of fiber earthwork cloth and preparation method thereof.
Background technology
Geotextiles is mainly used in the little stressed large engineerings of silt diameter such as refuse landfill, water conservancy, harbour, navigation channel, railway, highway, its Main Function played comprises: 1, buffer action, the constructional materials of different physical properties is isolated, material is not mixed, keep the globality of material; 2, filtration, when water flows into coarse fodder soil layer by fines soil layer, utilizes the water permeability of geotextiles, allows water pass through and tackle the material such as soil particle, fine sand; 3, stabilization, strengthens soil body tension non-deformability, strengthens building structure stability.
At present, waste and old clothing can cause the generation of a large amount of rubbish, the environment that the mankind such as river, lake depend on for existence in these refuse pollutions, therefore, the recycling of waste and old clothing, not only can solve environmental issue, and can alleviate the pressure of resource scarcity, especially in today of fibrous raw material price continuous rise, its recycling has great importance.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, the object of the present invention is to provide a kind of preparation method of fiber earthwork cloth, this preparation method is by making fiber earthwork cloth by the waste and old clothing reclaimed, technique is simple, convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
Another object of the present invention is to provide a kind of fiber earthwork cloth, this fiber earthwork cloth adopts the waste and old clothing reclaimed to obtain, and greatly reduces cost of production, decreases environment pollution, the value can brought good economic results in society He apply.
Object of the present invention is achieved through the following technical solutions: a kind of preparation method of fiber earthwork cloth, in turn includes the following steps:
A, pretreatment: waste and old clothing is carried out scrubbing, sterilization and shear treatment, obtains fent;
B, shredding: the fent after shearing is carried out shredding process, obtains bundle fiber;
C, alcoholysis: the bundle fiber after shredding is added alcohols and depolymerization catalyst carries out alcoholysis process, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up;
D, decolouring: the fiber after cleaning is added hydrogen peroxide and active carbon carries out desolventing technology, carry out drying and processing by the fiber after decolouring, obtain short fiber;
E, braiding: the short fiber after drying is carried out braiding process, obtained fiber earthwork cloth.
Preparation method of the present invention is by adopting pretreatment, shredding, alcoholysis, decolouring and establishment step, obtained fiber earthwork cloth has outstanding filtration, draining, isolation, reinforcement, antiseepage, protective action, have lightweight, tensile strength is high, good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion resistant characteristic.
Preferably, described steps A in turn includes the following steps:
A1, scrubbing: waste and old clothing is added alkali lye, then heat 1-2h and carry out abatement processes at 20-60 DEG C of temperature in water-bath, washing, dries;
A2, sterilization: the waste and old clothing after drying is placed in sealed vacuum cabinet, injection of ozone, disinfection;
A3, shearing: the waste and old clothing after sterilization is carried out shear treatment, cuts into 1-3cm
2fent.First slide fastener or metal appurtenance is removed during shearing.
Pretreatment of the present invention is by adopting soda boiling washing scrubbing, ozonization and shear treatment, and the fent obtained is clean, sanitary, facilitates follow-up process.
Preferably, in described steps A 1, waste and old clothing is waste and old polyester cotton blending clothing, the fine clothing of waste and old cotton or waste and old chemical fibre clothes.
Waste and old clothing of the present invention mainly adopts containing cotton fiber or the more waste and old clothing of other Chemical fiber component, make the fiber earthwork cloth obtained have lightweight, tensile strength is high, good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion resistant characteristic.
Preferably, in described steps A 2, the alkali lye added is the sodium hydroxide solution of mass concentration at 1%-3%, and the solid-to-liquid ratio of waste and old clothing and sodium hydroxide solution is 1:5-15.Solid-to-liquid ratio refers to the quality of waste and old clothing and the volume ratio (W/V) of sodium hydroxide solution.
Selection the having a great impact scrubbing of alkali lye, the present invention is by adopting mass concentration at the sodium hydroxide solution of 1%-3% as alkali lye, and dirty removal capacities is strong, and scavenging effect is good.
Preferably, described step B is specially: utilize feeding roller and shredding licker-in to carry out the shredding process of continuous 4-8 time the fent after shearing, make the fiber of being entangled with of bulk in fent tear and loosen as bundle fiber, impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force.
The shredding process of shredding of the present invention by adopting feeding roller and shredding licker-in to carry out continuous 4-8 time, the fiber of being entangled with of bulk in fent can be torn and loosens as bundle fiber, facilitate follow-up alcoholysis, and impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force, convenient and swift.
Preferably, described step C is specially: the bundle fiber after shredding is added alcohols and depolymerization catalyst, preimpregnation 20-40min, then 170-210 DEG C is heated to, atmospheric agitation reaction 1-2h carries out alcoholysis process, be cooled to after room temperature through reacted mixture and filter, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up.
Bundle fiber after shredding is first added alcohols and depolymerization catalyst by alcoholysis of the present invention, preimpregnation 20-40min, and preimpregnation can make the alcohols that adds and depolymerization catalyst fully mix with bundle fiber, is convenient to the carrying out of follow-up alcoholysis reaction.
Alcoholysis refers to the decomposition reaction that the compound such as ester, acyl chlorides, acid anhydrides, acid amides, nitrile in clothing occurs under alcohol effect.
Alcoholysis of the present invention is by adding alcohols and depolymerization catalyst, and to control reaction temperature be 170-210 DEG C, and the reaction time is 1-2h, makes alcoholysis effective, fiber thoroughly can be separated with other impurity, obtain pure fiber.
Preferably, in described step C, the mixture that alcohols is made up of with weight ratio 2-3:1 ethylene glycol and propane diols, depolymerization catalyst is zinc acetate, the solid-to-liquid ratio of alcohols and bundle fiber is 1:5-15, and the weight ratio of depolymerization catalyst and bundle fiber is 0.1-0.5:100.Solid-to-liquid ratio refers to the quality of bundle fiber and the volume ratio (W/V) of alcohols.
The selection of alcohols solvent has a great impact alcoholysis reaction, the present invention is by adopting ethylene glycol and propane diols is composite is used as alcohols solvent, and to control its weight ratio be 2-3:1, and the solid-to-liquid ratio controlling alcohols and bundle fiber is 1:5-15, make alcoholysis effective, fiber thoroughly can be separated with other impurity, obtain pure fiber.
The selection of alcoholysis catalysts has a great impact alcoholysis reaction, the present invention is by adopting zinc acetate as alcoholysis catalysts, and the weight ratio controlling itself and bundle fiber is 0.1-0.5:100, makes alcoholysis effective, fiber thoroughly can be separated with other impurity, obtain pure fiber.
Preferably, in described step D, the mass concentration of hydrogen peroxide is 1%-3%, and pH value is 8-9, and the solid-to-liquid ratio of hydrogen peroxide and fiber is 1:5-15, and the weight ratio of active carbon and fiber is 1-5:100.Solid-to-liquid ratio refers to the quality of fiber and the volume ratio (W/V) of hydrogenperoxide steam generator.
Decolouring of the present invention is by adopting hydrogen peroxide and active carbon is composite is used as decolorizing agent, and activated carbon decolorizing is physical absorption, and hydrogen peroxide decolouring is because there occurs chemical reaction, and both carry out strengthening decolorizing effect simultaneously.
Preferably, in described step D, by the short fiber after oven dry through short-fiber oil agent process, short-fiber oil agent is made up of the raw material of following weight portion: dimethicone 30-50 part, mineral oil 20-40 part, Ethylhexyl stearate 20-30 part, diethylaluminum ethoxide sulfonic acid sodium succinate 10-20 part, (Z)-9-octadecenic acid-dodecyl ester 8-12 part, 1, two (the 2-amino-benzene oxygen)-ethane-N of 2-, N, N`, N`-tetraacethyl tetrasodium salt 8-12 part, ethoxylated dodecyl alcohol sulfosuccinate disodium 6-10 part, octadecyldimethyl ethoxy quaternary ammonium nitrate 6-10 part, PETG 4-8 part, dialkyl quaternary ammonium salt 6-10 part, NPE 8-12 part, ethoxylated dodecyl alcohol 6-10 part, polyoxyethylene laurate 1-5 part, triethanolamine 5-15 part, oleic acid 8-12 part, sodium alkyl sulfonate 6-10 part, potassium persulfate 0.5-1.5 part and glycerine 0.01-0.05 part, above-mentioned raw materials mixes rear obtained short-fiber oil agent.
Short-fiber oil agent of the present invention is by adopting above-mentioned raw materials, and the strict weight ratio controlling each raw material, through the short fiber of short-fiber oil agent process of the present invention, better elasticity and toughness can be obtained, the smooth, soft effect of short fiber can also be improved.
Short fiber of the present invention through short-fiber oil agent process, make the elasticity of short fiber and toughness better, can improve the effect of short fiber smooth, soft, use rear spinnability better, the strength loss after precursor twisted weave is little.
Another object of the present invention is achieved through the following technical solutions: a kind of fiber earthwork cloth, and the above-mentioned preparation method of described fiber earthwork cloth obtains.
Fiber earthwork cloth of the present invention adopts the waste and old clothing reclaimed to obtain, and greatly reduces cost of production, decreases environment pollution, the value can brought good economic results in society He apply.
Beneficial effect of the present invention is: preparation method of the present invention is by adopting pretreatment, shredding, alcoholysis, decolouring and establishment step, obtained fiber earthwork cloth has outstanding filtration, draining, isolation, reinforcement, antiseepage, protective action, have lightweight, tensile strength is high, good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion resistant characteristic.
Pretreatment of the present invention is by adopting soda boiling washing scrubbing, ozonization and shear treatment, and the fent obtained is clean, sanitary, facilitates follow-up process.
The shredding process of shredding of the present invention by adopting feeding roller and shredding licker-in to carry out continuous 4-8 time, the fiber of being entangled with of bulk in fent can be torn and loosens as bundle fiber, facilitate follow-up alcoholysis, and impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force, convenient and swift.
Bundle fiber after shredding is first added alcohols and depolymerization catalyst by alcoholysis of the present invention, preimpregnation 20-40min, and preimpregnation can make the alcohols that adds and depolymerization catalyst fully mix with bundle fiber, is convenient to the carrying out of follow-up alcoholysis reaction.
Alcoholysis of the present invention is by adding alcohols and depolymerization catalyst, and to control reaction temperature be 170-210 DEG C, and the reaction time is 1-2h, makes alcoholysis effective, fiber thoroughly can be separated with other impurity, obtain pure fiber.
Decolouring of the present invention is by adopting hydrogen peroxide and active carbon is composite is used as decolorizing agent, and activated carbon decolorizing is physical absorption, and hydrogen peroxide decolouring is because there occurs chemical reaction, and both carry out strengthening decolorizing effect simultaneously.
Short fiber of the present invention through short-fiber oil agent process, make the elasticity of short fiber and toughness better, can improve the effect of short fiber smooth, soft, use rear spinnability better, the strength loss after precursor twisted weave is little.
Preparation method of the present invention is by making fiber earthwork cloth by the waste and old clothing reclaimed, and technique is simple, and convenient operation and control, steady quality, production efficiency is high, can large-scale industrial production.
Fiber earthwork cloth of the present invention has outstanding filtration, draining, isolation, reinforcement, antiseepage, protective action, have lightweight, tensile strength is high, good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion resistant characteristic.
Fiber earthwork cloth of the present invention adopts the waste and old clothing reclaimed to obtain, and greatly reduces cost of production, decreases environment pollution, the value can brought good economic results in society He apply.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Embodiment 1
A preparation method for fiber earthwork cloth, in turn includes the following steps:
A, pretreatment: waste and old clothing is carried out scrubbing, sterilization and shear treatment, obtains fent;
B, shredding: the fent after shearing is carried out shredding process, obtains bundle fiber;
C, alcoholysis: the bundle fiber after shredding is added alcohols and depolymerization catalyst carries out alcoholysis process, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up;
D, decolouring: the fiber after cleaning is added hydrogen peroxide and active carbon carries out desolventing technology, carry out drying and processing by the fiber after decolouring, obtain short fiber;
E, braiding: the short fiber after drying is carried out braiding process, obtained fiber earthwork cloth.
Described steps A in turn includes the following steps:
A1, scrubbing: waste and old clothing is added alkali lye, then heat 1h and carry out abatement processes at 20 DEG C of temperature in water-bath, washing, dries;
A2, sterilization: the waste and old clothing after drying is placed in sealed vacuum cabinet, injection of ozone, disinfection;
A3, shearing: the waste and old clothing after sterilization is carried out shear treatment, cuts into 1cm
2fent.
In described steps A 1, waste and old clothing is waste and old polyester cotton blending clothing.
In described steps A 2, the alkali lye added be mass concentration 1% sodium hydroxide solution, the solid-to-liquid ratio of waste and old clothing and sodium hydroxide solution is 1:5.
Described step B is specially: utilize feeding roller and shredding licker-in to carry out the shredding process of continuous 4 times the fent after shearing, make the fiber of being entangled with of bulk in fent tear and loosen as bundle fiber, impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force.
Described step C is specially: the bundle fiber after shredding is added alcohols and depolymerization catalyst, preimpregnation 20min, then 170 DEG C are heated to, atmospheric agitation reaction 1h carries out alcoholysis process, be cooled to after room temperature through reacted mixture and filter, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up.
In described step C, the mixture that alcohols is made up of with weight ratio 2:1 ethylene glycol and propane diols, depolymerization catalyst is zinc acetate, and the solid-to-liquid ratio of alcohols and bundle fiber is 1:5, and the weight ratio of depolymerization catalyst and bundle fiber is 0.1:100.
In described step D, the mass concentration of hydrogen peroxide is 1%, and pH value is 8, and the solid-to-liquid ratio of hydrogen peroxide and fiber is 1:5, and the weight ratio of active carbon and fiber is 1:100.
In described step D, by the short fiber after oven dry through short-fiber oil agent process, short-fiber oil agent is made up of the raw material of following weight portion: dimethicone 30 parts, 20 parts, mineral oil, Ethylhexyl stearate 20 parts, diethylaluminum ethoxide sulfonic acid sodium succinate 10 parts, (Z)-9-octadecenic acid-dodecyl ester 8-12 part, 1, two (the 2-amino-benzene oxygen)-ethane-N of 2-, N, N`, N`-tetraacethyl tetrasodium salt 8 parts, ethoxylated dodecyl alcohol sulfosuccinate disodium 6 parts, 6 parts, octadecyldimethyl ethoxy quaternary ammonium nitrate, PETG 4 parts, dialkyl quaternary ammonium salt 6 parts, NPE 8 parts, ethoxylated dodecyl alcohol 6 parts, polyoxyethylene laurate 1 part, triethanolamine 5 parts, oleic acid 8 parts, sodium alkyl sulfonate 6 parts, potassium persulfate 0.5 part and glycerine 0.01 part, above-mentioned raw materials mixes rear obtained short-fiber oil agent.
A kind of fiber earthwork cloth, described fiber earthwork cloth obtains according to above-mentioned preparation method.
Embodiment 2
A preparation method for fiber earthwork cloth, in turn includes the following steps:
A, pretreatment: waste and old clothing is carried out scrubbing, sterilization and shear treatment, obtains fent;
B, shredding: the fent after shearing is carried out shredding process, obtains bundle fiber;
C, alcoholysis: the bundle fiber after shredding is added alcohols and depolymerization catalyst carries out alcoholysis process, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up;
D, decolouring: the fiber after cleaning is added hydrogen peroxide and active carbon carries out desolventing technology, carry out drying and processing by the fiber after decolouring, obtain short fiber;
E, braiding: the short fiber after drying is carried out braiding process, obtained fiber earthwork cloth.
Described steps A in turn includes the following steps:
A1, scrubbing: waste and old clothing is added alkali lye, then heat 1h and carry out abatement processes at 30 DEG C of temperature in water-bath, washing, dries;
A2, sterilization: the waste and old clothing after drying is placed in sealed vacuum cabinet, injection of ozone, disinfection;
A3, shearing: the waste and old clothing after sterilization is carried out shear treatment, cuts into 1cm
2fent.
In described steps A 1, waste and old clothing is waste and old polyester cotton blending clothing.
In described steps A 2, the alkali lye added be mass concentration 1.5% sodium hydroxide solution, the solid-to-liquid ratio of waste and old clothing and sodium hydroxide solution is 1:7.
Described step B is specially: utilize feeding roller and shredding licker-in to carry out the shredding process of continuous 5 times the fent after shearing, make the fiber of being entangled with of bulk in fent tear and loosen as bundle fiber, impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force.
Described step C is specially: the bundle fiber after shredding is added alcohols and depolymerization catalyst, preimpregnation 25min, then 180 DEG C are heated to, atmospheric agitation reaction 1h carries out alcoholysis process, be cooled to after room temperature through reacted mixture and filter, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up.
In described step C, the mixture that alcohols is made up of with weight ratio 2.2:1 ethylene glycol and propane diols, depolymerization catalyst is zinc acetate, and the solid-to-liquid ratio of alcohols and bundle fiber is 1:7, and the weight ratio of depolymerization catalyst and bundle fiber is 0.2:100.
In described step D, the mass concentration of hydrogen peroxide is 1.5%, and pH value is 8, and the solid-to-liquid ratio of hydrogen peroxide and fiber is 1:7, and the weight ratio of active carbon and fiber is 2:100.
In described step D, by the short fiber after oven dry through short-fiber oil agent process, short-fiber oil agent is made up of the raw material of following weight portion: dimethicone 35 parts, 25 parts, mineral oil, Ethylhexyl stearate 22 parts, diethylaluminum ethoxide sulfonic acid sodium succinate 12 parts, (Z)-9-octadecenic acid-dodecyl ester 9 parts, 1, two (the 2-amino-benzene oxygen)-ethane-N of 2-, N, N`, N`-tetraacethyl tetrasodium salt 9 parts, ethoxylated dodecyl alcohol sulfosuccinate disodium 7 parts, 7 parts, octadecyldimethyl ethoxy quaternary ammonium nitrate, PETG 5 parts, dialkyl quaternary ammonium salt 7 parts, NPE 9 parts, ethoxylated dodecyl alcohol 7 parts, polyoxyethylene laurate 2 parts, triethanolamine 7 parts, oleic acid 9 parts, sodium alkyl sulfonate 7 parts, potassium persulfate 0.7 part and glycerine 0.02 part, above-mentioned raw materials mixes rear obtained short-fiber oil agent.
A kind of fiber earthwork cloth, described fiber earthwork cloth obtains according to above-mentioned preparation method.
Embodiment 3
A preparation method for fiber earthwork cloth, in turn includes the following steps:
A, pretreatment: waste and old clothing is carried out scrubbing, sterilization and shear treatment, obtains fent;
B, shredding: the fent after shearing is carried out shredding process, obtains bundle fiber;
C, alcoholysis: the bundle fiber after shredding is added alcohols and depolymerization catalyst carries out alcoholysis process, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up;
D, decolouring: the fiber after cleaning is added hydrogen peroxide and active carbon carries out desolventing technology, carry out drying and processing by the fiber after decolouring, obtain short fiber;
E, braiding: the short fiber after drying is carried out braiding process, obtained fiber earthwork cloth.
Described steps A in turn includes the following steps:
A1, scrubbing: waste and old clothing is added alkali lye, then heat 1.5h and carry out abatement processes at 40 DEG C of temperature in water-bath, washing, dries;
A2, sterilization: the waste and old clothing after drying is placed in sealed vacuum cabinet, injection of ozone, disinfection;
A3, shearing: the waste and old clothing after sterilization is carried out shear treatment, cuts into 2cm
2fent.
In described steps A 1, waste and old clothing is the waste and old fine clothing of cotton.
In described steps A 2, the alkali lye added be mass concentration 2% sodium hydroxide solution, the solid-to-liquid ratio of waste and old clothing and sodium hydroxide solution is 1:10.
Described step B is specially: utilize feeding roller and shredding licker-in to carry out the shredding process of continuous 6 times the fent after shearing, make the fiber of being entangled with of bulk in fent tear and loosen as bundle fiber, impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force.
Described step C is specially: the bundle fiber after shredding is added alcohols and depolymerization catalyst, preimpregnation 30min, then 190 DEG C are heated to, atmospheric agitation reaction 1.5h carries out alcoholysis process, be cooled to after room temperature through reacted mixture and filter, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up.
In described step C, the mixture that alcohols is made up of with weight ratio 2.5:1 ethylene glycol and propane diols, depolymerization catalyst is zinc acetate, and the solid-to-liquid ratio of alcohols and bundle fiber is 1:10, and the weight ratio of depolymerization catalyst and bundle fiber is 0.3:100.
In described step D, the mass concentration of hydrogen peroxide is 2%, and pH value is 8, and the solid-to-liquid ratio of hydrogen peroxide and fiber is 1:10, and the weight ratio of active carbon and fiber is 3:100.
In described step D, by the short fiber after oven dry through short-fiber oil agent process, short-fiber oil agent is made up of the raw material of following weight portion: dimethicone 40 parts, 30 parts, mineral oil, Ethylhexyl stearate 25 parts, diethylaluminum ethoxide sulfonic acid sodium succinate 15 parts, (Z)-9-octadecenic acid-dodecyl ester 10 parts, 1, two (the 2-amino-benzene oxygen)-ethane-N of 2-, N, N`, N`-tetraacethyl tetrasodium salt 10 parts, ethoxylated dodecyl alcohol sulfosuccinate disodium 8 parts, 8 parts, octadecyldimethyl ethoxy quaternary ammonium nitrate, PETG 6 parts, dialkyl quaternary ammonium salt 8 parts, NPE 10 parts, ethoxylated dodecyl alcohol 8 parts, polyoxyethylene laurate 3 parts, triethanolamine 10 parts, oleic acid 10 parts, sodium alkyl sulfonate 8 parts, potassium persulfate 1 part and glycerine 0.03 part, above-mentioned raw materials mixes rear obtained short-fiber oil agent.
A kind of fiber earthwork cloth, described fiber earthwork cloth obtains according to above-mentioned preparation method.
Embodiment 4
A preparation method for fiber earthwork cloth, in turn includes the following steps:
A, pretreatment: waste and old clothing is carried out scrubbing, sterilization and shear treatment, obtains fent;
B, shredding: the fent after shearing is carried out shredding process, obtains bundle fiber;
C, alcoholysis: the bundle fiber after shredding is added alcohols and depolymerization catalyst carries out alcoholysis process, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up;
D, decolouring: the fiber after cleaning is added hydrogen peroxide and active carbon carries out desolventing technology, carry out drying and processing by the fiber after decolouring, obtain short fiber;
E, braiding: the short fiber after drying is carried out braiding process, obtained fiber earthwork cloth.
Described steps A in turn includes the following steps:
A1, scrubbing: waste and old clothing is added alkali lye, then heat 2h and carry out abatement processes at 50 DEG C of temperature in water-bath, washing, dries;
A2, sterilization: the waste and old clothing after drying is placed in sealed vacuum cabinet, injection of ozone, disinfection;
A3, shearing: the waste and old clothing after sterilization is carried out shear treatment, cuts into 3cm
2fent.
In described steps A 1, waste and old clothing is waste and old chemical fibre clothes.
In described steps A 2, the alkali lye added be mass concentration 2.5% sodium hydroxide solution, the solid-to-liquid ratio of waste and old clothing and sodium hydroxide solution is 1:12.
Described step B is specially: utilize feeding roller and shredding licker-in to carry out the shredding process of continuous 7 times the fent after shearing, make the fiber of being entangled with of bulk in fent tear and loosen as bundle fiber, impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force.
Described step C is specially: the bundle fiber after shredding is added alcohols and depolymerization catalyst, preimpregnation 35min, then 200 DEG C are heated to, atmospheric agitation reaction 2h carries out alcoholysis process, be cooled to after room temperature through reacted mixture and filter, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up.
In described step C, the mixture that alcohols is made up of with weight ratio 3:1 ethylene glycol and propane diols, depolymerization catalyst is zinc acetate, and the solid-to-liquid ratio of alcohols and bundle fiber is 1:12, and the weight ratio of depolymerization catalyst and bundle fiber is 0.4:100.
In described step D, the mass concentration of hydrogen peroxide is 3%, and pH value is 9, and the solid-to-liquid ratio of hydrogen peroxide and fiber is 1:12, and the weight ratio of active carbon and fiber is 4:100.
In described step D, by the short fiber after oven dry through short-fiber oil agent process, short-fiber oil agent is made up of the raw material of following weight portion: dimethicone 45 parts, 35 parts, mineral oil, Ethylhexyl stearate 28 parts, diethylaluminum ethoxide sulfonic acid sodium succinate 18 parts, (Z)-9-octadecenic acid-dodecyl ester 11 parts, 1, two (the 2-amino-benzene oxygen)-ethane-N of 2-, N, N`, N`-tetraacethyl tetrasodium salt 11 parts, ethoxylated dodecyl alcohol sulfosuccinate disodium 9 parts, 9 parts, octadecyldimethyl ethoxy quaternary ammonium nitrate, PETG 7 parts, dialkyl quaternary ammonium salt 9 parts, NPE 11 parts, ethoxylated dodecyl alcohol 9 parts, polyoxyethylene laurate 4 parts, triethanolamine 12 parts, oleic acid 11 parts, sodium alkyl sulfonate 9 parts, potassium persulfate 1.2 parts and glycerine 0.04 part, above-mentioned raw materials mixes rear obtained short-fiber oil agent.
A kind of fiber earthwork cloth, described fiber earthwork cloth obtains according to above-mentioned preparation method.
Embodiment 5
A preparation method for fiber earthwork cloth, in turn includes the following steps:
A, pretreatment: waste and old clothing is carried out scrubbing, sterilization and shear treatment, obtains fent;
B, shredding: the fent after shearing is carried out shredding process, obtains bundle fiber;
C, alcoholysis: the bundle fiber after shredding is added alcohols and depolymerization catalyst carries out alcoholysis process, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up;
D, decolouring: the fiber after cleaning is added hydrogen peroxide and active carbon carries out desolventing technology, carry out drying and processing by the fiber after decolouring, obtain short fiber;
E, braiding: the short fiber after drying is carried out braiding process, obtained fiber earthwork cloth.
Described steps A in turn includes the following steps:
A1, scrubbing: waste and old clothing is added alkali lye, then heat 2h and carry out abatement processes at 60 DEG C of temperature in water-bath, washing, dries;
A2, sterilization: the waste and old clothing after drying is placed in sealed vacuum cabinet, injection of ozone, disinfection;
A3, shearing: the waste and old clothing after sterilization is carried out shear treatment, cuts into 3cm
2fent.
In described steps A 1, waste and old clothing is waste and old chemical fibre clothes.
In described steps A 2, the alkali lye added be mass concentration 3% sodium hydroxide solution, the solid-to-liquid ratio of waste and old clothing and sodium hydroxide solution is 1:15.
Described step B is specially: utilize feeding roller and shredding licker-in to carry out the shredding process of continuous 8 times the fent after shearing, make the fiber of being entangled with of bulk in fent tear and loosen as bundle fiber, impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force.
Described step C is specially: the bundle fiber after shredding is added alcohols and depolymerization catalyst, preimpregnation 40min, then 210 DEG C are heated to, atmospheric agitation reaction 2h carries out alcoholysis process, be cooled to after room temperature through reacted mixture and filter, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up.
In described step C, the mixture that alcohols is made up of with weight ratio 3:1 ethylene glycol and propane diols, depolymerization catalyst is zinc acetate, and the solid-to-liquid ratio of alcohols and bundle fiber is 1:15, and the weight ratio of depolymerization catalyst and bundle fiber is 0.5:100.
In described step D, the mass concentration of hydrogen peroxide is 3%, and pH value is 9, and the solid-to-liquid ratio of hydrogen peroxide and fiber is 1:15, and the weight ratio of active carbon and fiber is 5:100.
In described step D, by the short fiber after oven dry through short-fiber oil agent process, short-fiber oil agent is made up of the raw material of following weight portion: dimethicone 50 parts, 40 parts, mineral oil, Ethylhexyl stearate 30 parts, diethylaluminum ethoxide sulfonic acid sodium succinate 20 parts, (Z)-9-octadecenic acid-dodecyl ester 12 parts, 1, two (the 2-amino-benzene oxygen)-ethane-N of 2-, N, N`, N`-tetraacethyl tetrasodium salt 12 parts, ethoxylated dodecyl alcohol sulfosuccinate disodium 10 parts, 10 parts, octadecyldimethyl ethoxy quaternary ammonium nitrate, PETG 8 parts, dialkyl quaternary ammonium salt 10 parts, NPE 12 parts, ethoxylated dodecyl alcohol 10 parts, polyoxyethylene laurate 5 parts, triethanolamine 15 parts, oleic acid 12 parts, sodium alkyl sulfonate 10 parts, potassium persulfate 1.5 parts and glycerine 0.05 part, above-mentioned raw materials mixes rear obtained short-fiber oil agent.
A kind of fiber earthwork cloth, described fiber earthwork cloth obtains according to above-mentioned preparation method.
The mechanical and physical performance of the fiber earthwork cloth that embodiment 1-5 obtains is as shown in table 1.
Table 1
| Test event | Standard value | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Ultimate strength (KN/m) | ≥2.5 | 25 | 27 | 28 | 26 | 25 |
| Elongation at break (%) | ≥25 | 90 | 105 | 120 | 110 | 95 |
| CBR bursting strength (KN) | ≥0.3 | 4.6 | 4.8 | 5.2 | 5.0 | 4.9 |
| Tearing brute force (KN) | ≥0.08 | 0.64 | 0.75 | 0.88 | 0.82 | 0.76 |
| Maximum operation (service) temperature (DEG C) | ≥100 | 133 | 142 | 150 | 145 | 138 |
| Minimum serviceability temperature (DEG C) | ≤-10 | -25 | -28 | -30 | -26 | -22 |
| Vertical permeability coefficient (cm/s) | ≥0.001 | 0.1 | 0.3 | 0.5 | 0.4 | 0.2 |
As can be seen from the above table, fiber earthwork cloth of the present invention have that tensile strength is high, good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion resistant characteristic.
Fiber earthwork cloth of the present invention adopts the waste and old clothing reclaimed to obtain, and greatly reduces cost of production, decreases environment pollution, the value can brought good economic results in society He apply.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (10)
1. a preparation method for fiber earthwork cloth, is characterized in that: in turn include the following steps:
A, pretreatment: waste and old clothing is carried out scrubbing, sterilization and shear treatment, obtains fent;
B, shredding: the fent after shearing is carried out shredding process, obtains bundle fiber;
C, alcoholysis: the bundle fiber after shredding is added alcohols and depolymerization catalyst carries out alcoholysis process, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up;
D, decolouring: the fiber after cleaning is added hydrogen peroxide and active carbon carries out desolventing technology, carry out drying and processing by the fiber after decolouring, obtain short fiber;
E, braiding: the short fiber after drying is carried out braiding process, obtained fiber earthwork cloth.
2. the preparation method of a kind of fiber earthwork cloth according to claim 1, is characterized in that: described steps A in turn includes the following steps:
A1, scrubbing: waste and old clothing is added alkali lye, then heat 1-2h and carry out abatement processes at 20-60 DEG C of temperature in water-bath, washing, dries;
A2, sterilization: the waste and old clothing after drying is placed in sealed vacuum cabinet, injection of ozone, disinfection;
A3, shearing: the waste and old clothing after sterilization is carried out shear treatment, cuts into 1-3cm
2fent.
3. the preparation method of a kind of fiber earthwork cloth according to claim 2, is characterized in that: in described steps A 1, and waste and old clothing is waste and old polyester cotton blending clothing, the fine clothing of waste and old cotton or waste and old chemical fibre clothes.
4. the preparation method of a kind of fiber earthwork cloth according to claim 2, is characterized in that: in described steps A 2, and the alkali lye added is the sodium hydroxide solution of mass concentration at 1%-3%, and the solid-to-liquid ratio of waste and old clothing and sodium hydroxide solution is 1:5-15.
5. the preparation method of a kind of fiber earthwork cloth according to claim 1, it is characterized in that: described step B is specially: utilize feeding roller and shredding licker-in to carry out the shredding process of continuous 4-8 time the fent after shearing, make the fiber of being entangled with of bulk in fent tear and loosen as bundle fiber, impurity wherein throws away along the tangential direction of shredding licker-in under the influence of centrifugal force.
6. the preparation method of a kind of fiber earthwork cloth according to claim 1, it is characterized in that: described step C is specially: the bundle fiber after shredding is added alcohols and depolymerization catalyst, preimpregnation 20-40min, then 170-210 DEG C is heated to, atmospheric agitation reaction 1-2h carries out alcoholysis process, be cooled to after room temperature through reacted mixture and filter, by the liquid slurry after depolymerization and fiber separation, the fiber water after separation cleans up.
7. the preparation method of a kind of fiber earthwork cloth according to claim 1, it is characterized in that: in described step C, the mixture that alcohols is made up of with weight ratio 2-3:1 ethylene glycol and propane diols, depolymerization catalyst is zinc acetate, the solid-to-liquid ratio of alcohols and bundle fiber is 1:5-15, and the weight ratio of depolymerization catalyst and bundle fiber is 0.1-0.5:100.
8. the preparation method of a kind of fiber earthwork cloth according to claim 1, it is characterized in that: in described step D, the mass concentration of hydrogen peroxide is 1%-3%, and pH value is 8-9, the solid-to-liquid ratio of hydrogen peroxide and fiber is 1:5-15, and the weight ratio of active carbon and fiber is 1-5:100.
9. the preparation method of a kind of fiber earthwork cloth according to claim 1, it is characterized in that: in described step D, by the short fiber after oven dry through short-fiber oil agent process, short-fiber oil agent is made up of the raw material of following weight portion: dimethicone 30-50 part, mineral oil 20-40 part, Ethylhexyl stearate 20-30 part, diethylaluminum ethoxide sulfonic acid sodium succinate 10-20 part, (Z)-9-octadecenic acid-dodecyl ester 8-12 part, 1, two (the 2-amino-benzene oxygen)-ethane-N of 2-, N, N`, N`-tetraacethyl tetrasodium salt 8-12 part, ethoxylated dodecyl alcohol sulfosuccinate disodium 6-10 part, octadecyldimethyl ethoxy quaternary ammonium nitrate 6-10 part, PETG 4-8 part, dialkyl quaternary ammonium salt 6-10 part, NPE 8-12 part, ethoxylated dodecyl alcohol 6-10 part, polyoxyethylene laurate 1-5 part, triethanolamine 5-15 part, oleic acid 8-12 part, sodium alkyl sulfonate 6-10 part, potassium persulfate 0.5-1.5 part and glycerine 0.01-0.05 part, above-mentioned raw materials mixes rear obtained short-fiber oil agent.
10. a fiber earthwork cloth, is characterized in that: the preparation method of described fiber earthwork cloth according to any one of claim 1-9 obtains.
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