CN109610034A - A kind of degradable blinding dust-suppression net and preparation method thereof - Google Patents
A kind of degradable blinding dust-suppression net and preparation method thereof Download PDFInfo
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- CN109610034A CN109610034A CN201811202589.8A CN201811202589A CN109610034A CN 109610034 A CN109610034 A CN 109610034A CN 201811202589 A CN201811202589 A CN 201811202589A CN 109610034 A CN109610034 A CN 109610034A
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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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/30—Safety or protective measures preventing damage to building parts or finishing work during construction against mechanical damage or dirt, e.g. guard covers of stairs
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Abstract
The invention discloses a kind of degradable blinding dust-suppression nets, and preparing raw material includes polylactic acid, sugarcane fiber, flax fiber, Masterbatch and calcium carbonate.The invention also discloses the preparation methods of the degradable blinding dust-suppression net.The degradable blinding dust-suppression net not only has great environment protection significance, but also durability and mechanical strength are significantly better than existing similar poly-lactic acid products, and cost is relatively low.
Description
Technical field
The present invention relates to environment-friendly materials technical fields, more particularly to a kind of degradable blinding dust-suppression net and its preparation side
Method.
Background technique
On the exposed vacant lot of construction site, outdoor scattered rickyard and other purposes, due to the effect of wind-force, it can generate big
The fine solid particle particle of amount, pollutes atmosphere.In certain cities or area, fugitive dust particulate matter has become PM2.5 in air
With the main source of PM10 pollution.The means of domestic common control fugitive dust are more traditional watering fugitive dusts, and the method needs make
With a large amount of water, and the effectively duration is short.Compared with fugitive dust of sprinkling water, large area covering dust-suppression net can be effectively played on the ground
Effect that is windproof and dustproof, reinforcing windrow, can save water resource, and permanently effective.But at present dust-suppression net be usually by polyethylene,
The materials such as polypropylene or recycled plastic are made, and in use after long-term exposing to the weather and day and night temperature variation, hold
Easily broken, fragment is not degradable, forms a large amount of plastic pollutions, causes larger pressure to urban environmental protection, and if be buried in the earth
It may polluted underground water resource.
Acid fiber by polylactic is biodegradable novel green fiber, the work of poly-lactic acid products microorganism in soil or water
Under can natural degradation be carbon dioxide and water, there is good environmental protection effect.But pure polylactic acid is a kind of hemicrystalline height
Polymers, percent crystallization in massecuite is low, and processing heat stability is poor, and the toughness and durability of pure polylactic acid article are poor, at high cost.If using poly-
Lactic acid is as the raw material for preparing blinding dust-suppression net, in scenes such as construction sites in use, being easy to scratch or gall and leading to performance
The bad or service life is shorter.
Summary of the invention
The present invention provides a kind of degradable blinding dust-suppression net aiming at above-mentioned defect.The invention solves
The technical issues of be polylactic acid blinding dust-suppression net toughness and durability it is poor, it is at high cost.
The technical scheme is that a kind of degradable blinding dust-suppression net, prepares raw material including at least following components:
65-75 parts of polylactic acid；
0.5-3 parts of sugarcane fiber；
1-3 parts of flax fiber；
1-3 parts of Masterbatch；
1-5 parts of calcium carbonate；
Wherein, above-mentioned number is parts by weight.
Preferably, raw material is prepared including at least following components:
70 parts of polylactic acid；
1.5 parts of sugarcane fiber；
2 parts of flax fiber；
2 parts of Masterbatch；
3 parts of calcium carbonate；
Above-mentioned number is parts by weight.
Specifically, the grammes per square metre of the degradable blinding dust-suppression net is 40-220 grams/m, mesh density 350-
2200 mesh/100 square centimeter.
The present invention also provides a kind of methods for preparing degradable blinding dust-suppression net, comprising the following steps:
(1) bagasse is cleaned to be placed in sodium hydroxide solution and be stirred, and is washed to pH7 and drying later, stand-by sugarcane fiber is made；
Flax fiber pulpboard is crushed, by kraft cooking, pH7 and drying is washed to later, stand-by flax fiber is made；
(2) by 65-75 parts of polylactic acid and 0.5-3 parts of sugarcane fibers, 1-3 parts of flax fibers, 1-3 parts of Masterbatch and 1-5 parts of carbonic acid
Calcium is uniformly mixed in mixing machine, obtains mixture；
(3) above-mentioned mixture is placed in screw extruder and carries out melt spinning, obtain acid fiber by polylactic silk, and to the poly- cream of gained
Sour fiber filament carries out hot-stretch, cooling and shaping；
(4) gained acid fiber by polylactic silk is woven into networking using net making machine, obtains the degradable blinding dust-suppression net.
In step (1), bagasse is placed in 1% sodium hydroxide solution with the ratio of 1:25, is stirred in 85 DEG C of waters bath with thermostatic control
It mixes 2 hours.For kraft cooking, in terms of sodium hydroxide, total base amount is equivalent to the 15-18% of flax fiber raw material weight,
Sulphidity 18-23%, liquor ratio 1:5.5-1:3.5, maximum temperature are 152 DEG C -165 DEG C, heating-up time 120-160 minute, heat preservation
Time 80-130 minute.
In step (3), the temperature of melt spinning is 190-220 DEG C, and spinning rate is 1600-1700m/min, hot-stretch
Temperature be 110-150 DEG C, draw ratio is 4.5-6.7 times, and the mode of cooling and shaping is air-cooled or water cooling.
Beneficial effects of the present invention are as follows:
1, because alkali can be reduced with lignin reaction, the bagasse content of lignin by alkali process, cellulose and hemicellulose contain
Amount rises, and specific surface area increases, and fiber surface is roughening, effectively improves the interface compatibility between sugarcane fiber and polylactic acid.
Polylactic acid can complete wetting sugarcane fiber surface, generate strong interface cohesive force.When by external forces, sugarcane fiber is made
For stress concentration point, stress is dispersed to by polylactic acid by good interfacial adhesion, fibre strength is significantly improved, so as to enhance
The tensile strength and impact strength of polylactic acid article.
2, naoh treatment has dissolved the impurity such as the lignin, pectin and wax on flax fiber surface, makes flax fiber
Surface attachments are reduced, and are more closely filled among polylactic acid in the form of filler.During melt spinning, flax fiber
Promote mixture to recrystallize, improve percent crystallization in massecuite, and flax fiber reduces the warm-up movement ability of polylactic acid molecule, reduces poly-
The trend that lactic acid macromolecular chain is moved due to heating improves processing heat stability.In addition, flax fiber and polylactic acid are fine
It overlaps each other between dimension, forms continuous phase, stress transfer can be more effectively carried out.Therefore, the addition of flax fiber significantly improves
The toughness and breaking strength of polylactic acid article.
3, there is also interactions between sugarcane fiber and flax fiber, generate synergistic effect, significantly improve between fiber
Interface compatibility and bonding force improve product mechanical property to enhance the intensity of composite fibre, increase the suppression of polylactic acid blinding
The durability of dirt net reduces the risk of rupture in use.And bagasse is the by-product of sugar industry, flax fiber comes from papermaking
Industry, the two is cheap, can reduce the cost of poly-lactic acid products.
Specific embodiment
For a better understanding of the present invention, below with specific example come the technical solution that the present invention will be described in detail, but this
Invention is not limited thereto.
Material and equipment
Polylactic acid: Poly L-lactic acid (PLLA), Shenzhen City Guanghua Weiye Industry Co., Ltd
Bagasse: Guangxi Gui Tang Group Plc
Flax fiber pulpboard: Heilungkiang Kai Feng Paper Co., Ltd
Masterbatch: Ningbo masterbatch Co., Ltd
Calcium carbonate: southeast new material limited liability company
Screw extruder: HT-TE20 double screw extruder, Dongguan City Hou Tian precision instrument Co., Ltd
Net making machine: SVP net making machine, Dongguan Yaoan Plastic Machine Co., Ltd.
Embodiment 1
The present embodiment provides a kind of degradable blinding dust-suppression nets, prepare raw material including at least following components:
66 parts of polylactic acid；
1.5 parts of sugarcane fiber；
1.5 parts of flax fiber；
1 part of Masterbatch；
1.5 parts of calcium carbonate；
Above-mentioned number is parts by weight.
The grammes per square metre of the degradable blinding dust-suppression net is 60 grams/m, and mesh density is 400 mesh/100 square centimeter.
Above-mentioned degradable blinding dust-suppression net is to prepare by the following method.
(1) it after bagasse is cleaned, is placed in 1% sodium hydroxide solution with the ratio of 1:25, stirs 2 in 85 DEG C of waters bath with thermostatic control
Hour, it is washed to pH7 and drying with distillation later, stand-by sugarcane fiber is made.Flax fiber pulpboard is crushed, through persulfate
Method boiling is washed to pH7 and drying later, and stand-by flax fiber is made.The specific requirement of kraft cooking is as follows: with hydrogen-oxygen
Change sodium meter, total base amount is equivalent to the 16% of flax fiber raw material weight, sulphidity 19%, liquor ratio 1:4, maximum temperature 154
DEG C, the heating-up time 125 minutes, soaking time 85 minutes.
(2) polylactic acid, sugarcane fiber, flax fiber, Masterbatch and calcium carbonate are added to the mixer according to the above ratio mixed
It closes uniformly, obtains mixture.
(3) above-mentioned mixture is placed in screw extruder and carries out melt spinning, the temperature of melt spinning is 190 DEG C, is spun
Silk rate is 1600m/min, obtains acid fiber by polylactic silk, carries out hot-stretch to gained acid fiber by polylactic silk at 115 DEG C, is stretched
Multiple is 4.7 times, stands the sizing of lowering cold front heavy rain later.
(4) gained acid fiber by polylactic silk is woven into degradable blinding dust-suppression net product A using net making machine.
Embodiment 2
The present embodiment provides a kind of degradable blinding dust-suppression nets, prepare raw material including at least following components:
74 parts of polylactic acid；
2 parts of sugarcane fiber；
1.2 parts of flax fiber；
2 parts of Masterbatch；
3 parts of calcium carbonate；
Above-mentioned number is parts by weight.
The grammes per square metre of the degradable blinding dust-suppression net is 220 grams/m, and mesh density is 2100 mesh/100 square li
Rice.
Above-mentioned degradable blinding dust-suppression net is to prepare by the following method.
(1) it after bagasse is cleaned, is placed in 1% sodium hydroxide solution with the ratio of 1:25, stirs 2 in 85 DEG C of waters bath with thermostatic control
Hour, it is washed to pH7 and drying with distillation later, stand-by sugarcane fiber is made.Flax fiber pulpboard is crushed, through persulfate
Method boiling is washed to pH7 and drying later, and stand-by flax fiber is made.The specific requirement of kraft cooking is as follows: with hydrogen-oxygen
Change sodium meter, total base amount is equivalent to the 18% of flax fiber raw material weight, sulphidity 22%, liquor ratio 1:5.3, and maximum temperature is
164 DEG C, the heating-up time 155 minutes, soaking time 125 minutes.
(2) polylactic acid, sugarcane fiber, flax fiber, Masterbatch and calcium carbonate are added to the mixer according to the above ratio mixed
It closes uniformly, obtains mixture.
(3) above-mentioned mixture is placed in screw extruder and carries out melt spinning, the temperature of melt spinning is 220 DEG C, is spun
Silk rate is 1700m/min, obtains acid fiber by polylactic silk, carries out hot-stretch to gained acid fiber by polylactic silk at 150 DEG C, is stretched
Multiple is 6.5 times, stands the sizing of lowering cold front heavy rain later.
(4) gained acid fiber by polylactic silk is woven into degradable blinding dust-suppression net product B using net making machine.
Comparing embodiment 1
The present embodiment provides a kind of degradable blinding dust-suppression nets, prepare raw material including at least following components:
75 parts of polylactic acid；
2 parts of Masterbatch；
3 parts of calcium carbonate；
Above-mentioned number is parts by weight.
The grammes per square metre of the degradable blinding dust-suppression net is 210 grams/m, and mesh density is 500 mesh/100 square centimeter.
Above-mentioned degradable blinding dust-suppression net is to prepare by the following method.
(1) polylactic acid, Masterbatch and calcium carbonate are added to the mixer uniformly mixed according to the above ratio, obtain mixture.
(2) above-mentioned mixture is placed in screw extruder and carries out melt spinning, the temperature of melt spinning is 188 DEG C, is spun
Silk rate is 1700m/min, obtains acid fiber by polylactic silk, carries out hot-stretch to gained acid fiber by polylactic silk at 140 DEG C, is stretched
Multiple is 5.0 times, stands the sizing of lowering cold front heavy rain later.
(3) gained acid fiber by polylactic silk is woven into degradable blinding dust-suppression net products C using net making machine.
Comparing embodiment 2
The present embodiment provides a kind of degradable blinding dust-suppression nets, prepare raw material including at least following components:
75 parts of polylactic acid；
1.5 parts of sugarcane fiber；
2 parts of Masterbatch；
3 parts of calcium carbonate；
Above-mentioned number is parts by weight.
The grammes per square metre of the degradable blinding dust-suppression net is 210 grams/m, and mesh density is 1000 mesh/100 square li
Rice.
Above-mentioned degradable blinding dust-suppression net is to prepare by the following method.
(1) it after bagasse is cleaned, is placed in 1% sodium hydroxide solution with the ratio of 1:25, stirs 2 in 85 DEG C of waters bath with thermostatic control
Hour, it is washed to pH7 and drying with distillation later, stand-by sugarcane fiber is made.
(2) polylactic acid, sugarcane fiber, Masterbatch and calcium carbonate are added to the mixer uniformly mixed according to the above ratio, obtained
To mixture.
(3) above-mentioned mixture is placed in screw extruder and carries out melt spinning, the temperature of melt spinning is 190 DEG C, is spun
Silk rate is 1650m/min, obtains acid fiber by polylactic silk, carries out hot-stretch to gained acid fiber by polylactic silk at 135 DEG C, is stretched
Multiple is 5.5 times, stands the sizing of lowering cold front heavy rain later.
(4) gained acid fiber by polylactic silk is woven into degradable blinding dust-suppression net product D using net making machine.
Comparing embodiment 3
The present embodiment provides a kind of degradable blinding dust-suppression nets, prepare raw material including at least following components:
75 parts of polylactic acid；
1.5 parts of flax fiber；
2 parts of Masterbatch；
3 parts of calcium carbonate；
Above-mentioned number is parts by weight.
The grammes per square metre of the degradable blinding dust-suppression net is 220 grams/m, and mesh density is 2000 mesh/100 square li
Rice.
Above-mentioned degradable blinding dust-suppression net is to prepare by the following method.
(1) flax fiber pulpboard is crushed, by kraft cooking, is washed to pH7 and drying later, sulfate process is steamed
The specific requirement boiled is as follows: in terms of sodium hydroxide, total base amount is equivalent to the 17% of flax fiber raw material weight, sulphidity 22%,
Liquor ratio is 1:5.0, and maximum temperature is 158 DEG C, the heating-up time 150 minutes, soaking time 120 minutes.
(2) polylactic acid, flax fiber, Masterbatch and calcium carbonate are added to the mixer uniformly mixed according to the above ratio, obtained
To mixture.
(3) above-mentioned mixture is placed in screw extruder and carries out melt spinning, the temperature of melt spinning is 195 DEG C, is spun
Silk rate is 1700m/min, obtains acid fiber by polylactic silk, carries out hot-stretch to gained acid fiber by polylactic silk at 145 DEG C, is stretched
Multiple is 4.8 times, stands the sizing of lowering cold front heavy rain later；
(3) gained acid fiber by polylactic silk is woven into degradable blinding dust-suppression net product E using net making machine.
Mechanical property compares
The product A to E obtained to above-described embodiment is tested, and comparison result.
1, tensile property is tested
It is tested using YG (B) 021H type chemical-fibres filaments electronic single-yarn strength tester (Xi'an Jing great detection device Co., Ltd),
Test condition are as follows: the effective width of every piece of sample is 50 millimeters, and 220 millimeters of clamp distance, tensile speed is set as 20 millis m/min
Clock, each sample are surveyed 10 times.
As a result
Product A tensile strength is 72.67 MPa, elongation at break 3.4%；
Product B tensile strength is 75.14 MPa, elongation at break 3.6%；
Products C tensile strength is 56.38 MPa, elongation at break 2.1%；
Product D tensile strength is 58.83 MPa, elongation at break 2.4%；
Product E tensile strength is 57.44 MPa, elongation at break 2.3%.
2, wearability test
It is tested using Martindale's wear resistant instrument (standard group (Hong Kong) Co., Ltd), clamper and mill platform relative motion speed
Degree: 40r/ minutes, sample was circle, and diameter is 50 millimeters.
As a result
The wearability of product A is 2.77 F/tex；
The wearability of product B is 2.82 F/tex；
The wearability of products C is 2.08 F/tex；
The wearability of product D is 2.15 F/tex；
The wearability of product E is 2.23 F/tex.
According to above-mentioned experimental result as it can be seen that for by the method for the invention with acid fiber by polylactic mixing sugarcane fiber and flax
Fiber is the blinding dust-suppression net of raw material preparation, and every mechanical property is not only significantly higher than pure polylactic acid article, but also sugarcane fiber
Produce synergistic effect with flax fiber, the improvement occurred in tested indices much larger than individually addition sugarcane fiber or
The sum of improvement caused by flax fiber.
Therefore, blinding dust-suppression net of the invention is not only degradable, has important environment protection significance, and is suitable for building work
Scenes, longer life expectancy, the durabilities such as ground, bulk cargo stacking field, coal yard are stronger.
The above embodiment of the present invention is only preferred embodiment, is not limited to the scope of the present invention.Ability
The those of ordinary skill in domain can understand spirit of the invention according to above-described embodiment, and make a variety of different modifications and variations.?
Without departing from the spirit of the invention, it is all this etc. modifications and variations it is all within the scope of the present invention.
Claims (8)
1. a kind of degradable blinding dust-suppression net, which is characterized in that it prepares raw material including at least following components:
65-75 parts of polylactic acid；
0.5-3 parts of sugarcane fiber；
1-3 parts of flax fiber；
1-3 parts of Masterbatch；
1-5 parts of calcium carbonate；
Wherein, above-mentioned number is parts by weight.
2. degradable blinding dust-suppression net according to claim 1, which is characterized in that it prepares raw material and includes at least with the following group
Point:
70 parts of polylactic acid；
1.5 parts of sugarcane fiber；
2 parts of flax fiber；
2 parts of Masterbatch；
3 parts of calcium carbonate；
Above-mentioned number is parts by weight.
3. degradable blinding dust-suppression net according to claim 2, which is characterized in that gram of the degradable blinding dust-suppression net
Weight is 40-220 grams/m.
4. degradable blinding dust-suppression net according to claim 2, which is characterized in that the degradable blinding dust-suppression net is
Mesh/100 square centimeter 350-2200.
5. a kind of method for preparing degradable blinding dust-suppression net, which comprises the following steps:
(1) bagasse is cleaned to be placed in sodium hydroxide solution and be stirred, and is washed to pH7 and drying later, stand-by sugarcane fiber is made；
Flax fiber pulpboard is crushed, by kraft cooking, pH7 and drying is washed to later, stand-by flax fiber is made；
(2) by 65-75 parts of polylactic acid and 0.5-3 parts of sugarcane fibers, 1-3 parts of flax fibers, 1-3 parts of Masterbatch and 1-5 parts of carbonic acid
Calcium is uniformly mixed in mixing machine, obtains mixture；
(3) above-mentioned mixture is placed in screw extruder and carries out melt spinning, obtain acid fiber by polylactic silk, and to the poly- cream of gained
Sour fiber filament carries out hot-stretch, cooling and shaping；
(4) gained acid fiber by polylactic silk is woven into networking using net making machine, obtains the degradable blinding dust-suppression net.
6. the method according to claim 5 for preparing degradable blinding dust-suppression net, which is characterized in that in step (1), will
Bagasse is placed in 1% sodium hydroxide solution with the ratio of 1:25, is stirred 2 hours in 85 DEG C of waters bath with thermostatic control.
7. the method according to claim 5 for preparing degradable blinding dust-suppression net, which is characterized in that for step (1)
Kraft cooking, in terms of sodium hydroxide, total base amount is equivalent to the 15-18% of flax fiber raw material weight, sulphidity 18-
23%, liquor ratio 1:5.5-1:3.5, maximum temperature are 152 DEG C -165 DEG C, heating-up time 120-160 minute, soaking time 80-
130 minutes.
8. the method according to claim 5 for preparing degradable blinding dust-suppression net, which is characterized in that in step (3), melt
The temperature for melting spinning is 190-220 DEG C, and spinning rate is 1600-1700m/min, and the temperature of hot-stretch is 110-150 DEG C, is stretched
Multiple is 4.5-6.7 times, and the mode of cooling and shaping is air-cooled or water cooling.
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| CN113062132A (en) * | 2021-04-27 | 2021-07-02 | 梁燕萍 | Non-woven fabric and manufacturing method thereof |
| CN114889179A (en) * | 2022-05-10 | 2022-08-12 | 山东金冠网具有限公司 | Application of composite photolysis agent in degradable covering soil dust suppression net |
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