CN110089395B - Fast-growing grass felt and preparation method thereof - Google Patents

Fast-growing grass felt and preparation method thereof Download PDF

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Publication number
CN110089395B
CN110089395B CN201910380537.8A CN201910380537A CN110089395B CN 110089395 B CN110089395 B CN 110089395B CN 201910380537 A CN201910380537 A CN 201910380537A CN 110089395 B CN110089395 B CN 110089395B
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felt
temperature
glue
straw powder
roller
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CN110089395A (en
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李畅
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Hunan Safeng Machinery Technology Co ltd
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Hunan Safeng Machinery Technology Co ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/04—Arranging seed on carriers, e.g. on tapes, on cords ; Carrier compositions
    • A01C1/044—Sheets, multiple sheets or mats
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
    • A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
    • A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/40—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure
    • A01G24/44—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure in block, mat or sheet form
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
    • C09J129/02—Homopolymers or copolymers of unsaturated alcohols
    • C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Inorganic Chemistry (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses a fast-growing grass mat, which comprises straw powder, clay, bentonite, seeds, sodium humate, an adhesive and a polypropylene fiber net, wherein the straw powder is mixed with the clay; a method for preparing a fast-growing turf mat, comprising the steps of: firstly, ammoniating straw powder; the ammonification treatment method is one of a cellar ammonification method, a plastic bag ammonification method and an oven ammonification method; step two, uniformly mixing straw powder with clay, bentonite, seeds and sodium humate to obtain a mixture A, wherein the water content of the clay is 10-16%; thirdly, forming a film by a corrugated roller film forming machine to obtain a straw felt; the grass felt of the invention not only plays a role in wind prevention and sand fixation, but also prevents dust from flying and prevents water and soil loss in the environment of dust flying.

Description

Fast-growing grass felt and preparation method thereof
Technical Field
The invention relates to the field of greening and environmental protection, and particularly relates to a fast-growing grass felt and a preparation method thereof.
Background
In the engineering fields of highways, railways, water conservancy, mines, municipal works and the like, the damaged side slope is often required to be protected and planted with green grass, so that desertification, water and soil loss and natural disasters are prevented.
At present, the method for protecting the side slope is generally afforestation, but the good treatment effect cannot be achieved. The reason is that the problem of water and soil flow is difficult to solve, water and soil loss is serious when trees are not grown, and the speed of planting trees is not higher than the speed of desert expansion and the speed of water and soil loss, so that the treatment is difficult to obtain a remarkable effect.
In addition, the main materials currently used for desert sand stabilization and slope protection include harvested straws, hand-inserted crop straws, nylon nets, waste building materials, chemical glue and the like. However, these materials all have certain drawbacks, such as: the chemical glue has serious pollution to desert and underground water environment; the nylon material can not be degraded, and is easy to cause secondary pollution to the environment, and the like. In addition, most seriously, the existing methods can not lay the sand in a piece, and the sand can not be completely fixed and the water and soil loss can not be prevented for the parts which can not be laid.
Disclosure of Invention
The invention aims to provide a fast-growing grass felt and a preparation method thereof, which solve the problems in the background technology.
The invention is realized in such a way that the fast-growing grass mat comprises straw powder, clay, bentonite, seeds, sodium humate, a bonding agent and a polypropylene fiber net,
the mass ratio of the straw powder to the clay is 1: 0.5-1;
the mass ratio of the bentonite to the straw powder is 0.1-0.4:1, 20-120 meshes, the water content is less than or equal to 12 percent,
the mass ratio of the sodium humate to the straw powder is 0.05-0.15:1, the mesh number is 20-120, the water content is less than or equal to 12 percent,
the spreading density of the seeds is 600-3；
The binder amount was 100mL per unit brush application, 250mL per unit, 2mm thick 1m per unit2A surface area;
the pore diameter of the polypropylene fiber net is 3-5 cm.
The further technical scheme of the invention is as follows: the adhesive is one of modified starch glue and polyvinyl alcohol glue, wherein the viscosity of the modified starch glue is 1200-1800 mpas, and the polyvinyl alcohol glue mainly comprises modified polyvinyl alcohol with the concentration of 6-14%.
The further technical scheme of the invention is as follows: the preparation method of the modified starch glue comprises the following steps: adding 191g of polyvinyl alcohol and a defoaming agent into 1000g of water, stirring, heating to 90 ℃ to completely dissolve the polyvinyl alcohol and the defoaming agent, stirring for 60min, adding 0.55g of ammonium persulfate when the temperature is reduced to 60 ℃, stirring for 10min, adding 76.4g of corn starch, stirring uniformly, adding a crosslinking agent, heating, controlling the temperature to be 75 ℃, keeping the temperature for 30min, adding 8.2g of rosin and 0.3g of dibutyl phthalate, stirring uniformly, and cooling to room temperature to obtain the modified starch glue.
The further technical scheme of the invention is as follows: the preparation method of the modified polyvinyl alcohol comprises the following steps: weighing a proper amount of PVA, adding water, carrying out water bath heating under electric stirring, controlling the water bath temperature to be 80-90 ℃, stopping heating after complete dissolution to obtain PVA glue, adding a proper amount of succinic acid into the PVA glue under a water bath with a certain temperature, stirring under a closed condition to react, and cooling to room temperature to obtain the modified PVA glue.
The further technical scheme of the invention is as follows: in the preparation method of the modified vinyl alcohol, the PVA gel mass concentration is 7%, the water bath reaction temperature is 85 ℃, and the mass ratio of the PVA gel to the succinic acid is 5.6: 1. under the condition, the hardness, adhesive force, viscosity and impact resistance of the obtained modified PVA glue are obviously improved, and the water resistance is also improved. The method can be used for preparing PVA adhesives and coatings with high requirements on adhesive force and water resistance.
The further technical scheme of the invention is as follows: the size of the straw powder is 1-5 mm.
A method for preparing a fast-growing turf mat, comprising the steps of:
firstly, ammoniating straw powder; the ammonification treatment method is one of a cellar ammonification method, a plastic bag ammonification method and an oven ammonification method;
step two, uniformly mixing straw powder with clay, bentonite, seeds and sodium humate to obtain a mixture A, wherein the water content of the clay is 10-16%;
and step three, forming a film by a corrugated roller film forming machine to obtain the grass felt.
The further technical scheme of the invention is as follows: the ammoniation treatment in the first step comprises the following steps: crushing the straws into 1-5mm, taking a closed plastic film or an ammoniation cellar as a container, taking any nitrogen compound of liquid ammonia, ammonia water, urea and ammonium bicarbonate as a nitrogen source, using ammonia accounting for 2-3% of the weight of the air-dried straw material to ensure that the water content of the straws reaches 20-30%, treating for 7-14 days at the external temperature of 20-30 ℃, and treating for 5-7 days at the temperature of more than 30 ℃ to soften and degrease the straw feed. The softness and hydrophilicity of the straw processed and modulated by the method are obviously improved, especially the content of crude protein is increased, and the organic matter conversion rate in the later period is more effectively improved.
The further technical scheme of the invention is as follows: the method for forming the film by the corrugated roller film forming machine in the third step comprises the following steps: the method comprises the steps of filling prepared adhesive into a glue device of a machine, filling the prepared mixture A into a feeding device of the machine, starting a working motor, uniformly spreading the mixture A and the adhesive on the inner wall of a corrugated sheet of a machine roller through centrifugal force of a centrifugal disc of the machine, enabling the corrugated forming sheet group positioned on the periphery of the roller to axially move in a roller-leaving mode under the transmission of the motor, adjusting the transmission speed of the corrugated forming sheet group to obtain the thickness of a required turf felt, arranging a heating device around the roller, starting the heating device to dry and dewater the turf felt simultaneously, demoulding the turf felt at the tail end of the corrugated roller under the radial movement condition of the corrugated roller and cutting a turf felt roll with the required width under a cutting device to obtain a turf felt blank, adhering one side of the turf felt blank with a polypropylene fiber net through the adhesive, shaping and dewatering the turf felt with an auxiliary heating function through a grinding wheel group, and drying.
The further technical scheme of the invention is as follows: the temperature of the heating device is set at 50-58 ℃, the water content of the straw felt is 28-32% when the straw felt passes through a corrugated cylinder of 3 meters, the roller set with the auxiliary heating function is shaped, dehydrated and dried until the water content is 8-12%, and the rolling pressure is 2kg/cm2-15kg/cm2The drying temperature is 55 deg.C, and the temperature is kept for 5min-30 min.
The invention has the beneficial effects that: the grass felt plays a role in wind prevention and sand fixation, prevents dust from flying and prevents water and soil loss in a dust flying environment;
(1) the clay has a certain binding effect and provides a carrier and basic nutrition for the growth of the seeds, and the clay and the straws are mixed to provide nutrition for the growth of the seeds in the process of rotting the straws;
(2) the adhesive in the invention adopts starch glue or polyvinyl alcohol glue, which are all easy-to-degrade adhesives, and plays a role in adhesion in the early period, thereby preventing the turf felt from being damaged in the turf felt rolling process, increasing the toughness of the turf felt and facilitating the spreading in the storage and use processes; when the seeds start to grow, the adhesive is gradually degraded, so that the growth of the seeds is not hindered;
(3) the fiber net is used as a basic framework, so that the grass mat is prevented from being damaged in the grass mat rolling process, the toughness of the grass mat is improved, and the grass mat is convenient to spread in the storage and use processes.
Detailed Description
A fast-growing grass mat comprises straw powder, clay, bentonite, seeds, sodium humate, a binder and a polypropylene fiber net,
the mass ratio of the straw powder to the clay is 1: 0.5-1;
the mass ratio of the bentonite to the straw powder is 0.1-0.4:1, 20-120 meshes, the water content is less than or equal to 12 percent,
the mass ratio of the sodium humate to the straw powder is 0.05-0.15:1, the mesh number is 20-120, the water content is less than or equal to 12 percent,
the spreading density of the seeds is 600-3；
The binder amount was 100mL per unit brush application, 250mL per unit, 2mm thick 1m per unit2A surface area;
the pore diameter of the polypropylene fiber net is 3-5 cm.
The adhesive is one of modified starch glue and polyvinyl alcohol glue, wherein the viscosity of the modified starch glue is 1200-1800 mpas, and the polyvinyl alcohol glue mainly comprises modified polyvinyl alcohol with the concentration of 6-14%.
The preparation method of the modified starch glue comprises the following steps: adding 191g of polyvinyl alcohol and a defoaming agent into 1000g of water, stirring, heating to 90 ℃ to completely dissolve the polyvinyl alcohol and the defoaming agent, stirring for 60min, adding 0.55g of ammonium persulfate when the temperature is reduced to 60 ℃, stirring for 10min, adding 76.4g of corn starch, stirring uniformly, adding a crosslinking agent, heating, controlling the temperature to be 75 ℃, keeping the temperature for 30min, adding 8.2g of rosin and 0.3g of dibutyl phthalate, stirring uniformly, and cooling to room temperature to obtain the modified starch glue.
The preparation method of the modified polyvinyl alcohol comprises the following steps: weighing a proper amount of PVA, adding water, carrying out water bath heating under electric stirring, controlling the water bath temperature to be 80-90 ℃, stopping heating after complete dissolution to obtain PVA glue, adding a proper amount of succinic acid into the PVA glue under a water bath with a certain temperature, stirring under a closed condition to react, and cooling to room temperature to obtain the modified PVA glue.
In the preparation method of the modified vinyl alcohol, the PVA gel mass concentration is 7%, the water bath reaction temperature is 85 ℃, and the mass ratio of the PVA gel to the succinic acid is 5.6: 1.
the size of the straw powder is 1-5 mm.
A method for preparing a fast-growing turf mat, comprising the steps of:
firstly, ammoniating straw powder; the ammonification treatment method is one of a cellar ammonification method, a plastic bag ammonification method and an oven ammonification method;
step two, uniformly mixing straw powder with clay, bentonite, seeds and sodium humate to obtain a mixture A, wherein the water content of the clay is 10-16%;
and step three, forming a film by a corrugated roller film forming machine to obtain the grass felt.
The ammoniation treatment in the first step comprises the following steps: crushing the straws into 1-5mm, taking a closed plastic film or an ammoniation cellar as a container, taking any nitrogen compound of liquid ammonia, ammonia water, urea and ammonium bicarbonate as a nitrogen source, using ammonia accounting for 2-3% of the weight of the air-dried straw material to ensure that the water content of the straws reaches 20-30%, treating for 7-14 days at the external temperature of 20-30 ℃, and treating for 5-7 days at the temperature of more than 30 ℃ to soften and degrease the straw feed.
The method for forming the film by the corrugated roller film forming machine in the third step comprises the following steps: the method comprises the steps of filling prepared adhesive into a glue device of a machine, filling the prepared mixture A into a feeding device of the machine, starting a working motor, uniformly spreading the mixture A and the adhesive on the inner wall of a corrugated sheet of a machine roller through centrifugal force of a centrifugal disc of the machine, enabling the corrugated forming sheet group positioned on the periphery of the roller to axially move in a roller-leaving mode under the transmission of the motor, adjusting the transmission speed of the corrugated forming sheet group to obtain the thickness of a required turf felt, arranging a heating device around the roller, starting the heating device to dry and dewater the turf felt simultaneously, demoulding the turf felt at the tail end of the corrugated roller under the radial movement condition of the corrugated roller and cutting a turf felt roll with the required width under a cutting device to obtain a turf felt blank, adhering one side of the turf felt blank with a polypropylene fiber net through the adhesive, shaping and dewatering the turf felt with an auxiliary heating function through a grinding wheel group, and drying.
The temperature of the heating device is set at 50-58 ℃, the water content of the straw felt is 28-32% when the straw felt passes through a corrugated cylinder of 3 meters, the roller set with the auxiliary heating function is shaped, dehydrated and dried until the water content is 8-12%, and the rolling pressure is 2kg/cm2-15kg/cm2The drying temperature is 55 deg.C, and the temperature is kept for 5min-30 min.
The position of the centrifugal disc is fixed, the mixture spilled during working is constant, when the mixture is thrown on the corrugated sheet, the mixture does not move like the corrugated sheet, the mixture can be continuously accumulated along with time, and when the translation speed of the corrugated sheet of the machine is different, the accumulation thickness of the mixture is also different, so that the felt thickness can be regulated and controlled.
The first embodiment is as follows:
a fast-growing grass mat comprises straw powder, clay, bentonite, seeds, sodium humate, a binder and a polypropylene fiber net,
the mass ratio of the straw powder to the clay is 1: 0.5-1;
the mass ratio of the bentonite to the straw powder is 0.1-0.4:1, 20-120 meshes, the water content is less than or equal to 12 percent,
the mass ratio of the sodium humate to the straw powder is 0.05-0.15:1, the mesh number is 20-120, the water content is less than or equal to 12 percent,
the spreading density of the seeds is 600 grains/m3；
The binder amount was 100mL per unit brush, where each unit was 2mm thick by 1m2A surface area;
the pore diameter of the polypropylene fiber net is 3 cm.
The adhesive is modified starch glue, wherein the viscosity of the modified starch glue is 1200mpas-1800mpas,
the preparation method of the modified starch glue comprises the following steps: adding 191g of polyvinyl alcohol and a defoaming agent into 1000g of water, stirring, heating to 90 ℃ to completely dissolve the polyvinyl alcohol and the defoaming agent, stirring for 60min, adding 0.55g of ammonium persulfate when the temperature is reduced to 60 ℃, stirring for 10min, adding 76.4g of corn starch, stirring uniformly, adding a crosslinking agent, heating, controlling the temperature to be 75 ℃, keeping the temperature for 30min, adding 8.2g of rosin and 0.3g of dibutyl phthalate, stirring uniformly, and cooling to room temperature to obtain the modified starch glue.
The size of the straw powder is 1-5 mm.
A method for preparing a fast-growing turf mat, comprising the steps of:
firstly, ammoniating straw powder; the ammonification treatment method is a cellar ammonification method;
step two, uniformly mixing straw powder with clay, bentonite, seeds and sodium humate to obtain a mixture A, wherein the water content of the clay is 10-16%;
and step three, forming a film by a corrugated roller film forming machine to obtain the grass felt.
The ammoniation treatment in the first step comprises the following steps: crushing the straws into 1-5mm, taking a closed plastic film or an ammoniation cellar as a container, taking any nitrogen compound of liquid ammonia, ammonia water, urea and ammonium bicarbonate as a nitrogen source, using ammonia accounting for 2-3% of the weight of the air-dried straw material to ensure that the water content of the straws reaches 20-30%, treating for 7-14 days at the external temperature of 20-30 ℃, and treating for 5-7 days at the temperature of more than 30 ℃ to soften and degrease the straw feed.
The method for forming the film by the corrugated roller film forming machine in the third step comprises the following steps: the method comprises the steps of filling prepared adhesive into a glue device of a machine, filling the prepared mixture A into a feeding device of the machine, starting a working motor, uniformly spreading the mixture A and the adhesive on the inner wall of a corrugated sheet of a machine roller through centrifugal force of a centrifugal disc of the machine, enabling the corrugated forming sheet group positioned on the periphery of the roller to axially move in a roller-leaving mode under the transmission of the motor, adjusting the transmission speed of the corrugated forming sheet group to obtain the thickness of a required turf felt, arranging a heating device around the roller, starting the heating device to dry and dewater the turf felt simultaneously, demoulding the turf felt at the tail end of the corrugated roller under the radial movement condition of the corrugated roller and cutting a turf felt roll with the required width under a cutting device to obtain a turf felt blank, adhering one side of the turf felt blank with a polypropylene fiber net through the adhesive, shaping and dewatering the turf felt with an auxiliary heating function through a grinding wheel group, and drying.
When the thickness of the grass felt is 2mm, the temperature of the heating device is set at 50 ℃, the water content of the grass felt is 28-32% when the grass felt passes through a corrugated cylinder of 3 meters, the roller set with the auxiliary heating function is shaped, dehydrated and dried until the water content is 8-12%, and the rolling pressure is 2kg/cm2The drying temperature is 55 deg.C, and the temperature is kept for 5 min.
Example two:
a fast-growing grass mat comprises straw powder, clay, bentonite, seeds, sodium humate, a binder and a polypropylene fiber net,
the mass ratio of the straw powder to the clay is 1: 0.5-1;
the mass ratio of the bentonite to the straw powder is 0.1-0.4:1, 20-120 meshes, the water content is less than or equal to 12 percent,
the mass ratio of the sodium humate to the straw powder is 0.05-0.15:1, the mesh number is 20-120, the water content is less than or equal to 12 percent,
the spreading density of the seeds is 600-3；
The binder amount was 100mL per unit brush application, 250mL per unit, 2mm thick 1m per unit2A surface area;
the pore diameter of the polypropylene fiber net is 3-5 cm.
The adhesive is polyvinyl alcohol glue, and the polyvinyl alcohol glue mainly comprises modified polyvinyl alcohol with the concentration of 6-14%.
The preparation method of the modified polyvinyl alcohol comprises the following steps: weighing a proper amount of PVA, adding water, carrying out water bath heating under electric stirring, controlling the water bath temperature to be 80-90 ℃, stopping heating after complete dissolution to obtain PVA glue, adding a proper amount of succinic acid into the PVA glue under a water bath with a certain temperature, stirring under a closed condition to react, and cooling to room temperature to obtain the modified PVA glue.
In the preparation method of the modified vinyl alcohol, the PVA gel mass concentration is 7%, the water bath reaction temperature is 85 ℃, and the mass ratio of the PVA gel to the succinic acid is 5.6: 1.
the size of the straw powder is 1-5 mm.
A method for preparing a fast-growing turf mat, comprising the steps of:
firstly, ammoniating straw powder; the ammonification treatment method is a plastic bag ammonification method;
step two, uniformly mixing straw powder with clay, bentonite, seeds and sodium humate to obtain a mixture A, wherein the water content of the clay is 10-16%;
and step three, forming a film by a corrugated roller film forming machine to obtain the grass felt.
The ammoniation treatment in the first step comprises the following steps: crushing the straws into 1-5mm, taking a closed plastic film or an ammoniation cellar as a container, taking any nitrogen compound of liquid ammonia, ammonia water, urea and ammonium bicarbonate as a nitrogen source, using ammonia accounting for 2-3% of the weight of the air-dried straw material to ensure that the water content of the straws reaches 20-30%, treating for 7-14 days at the external temperature of 20-30 ℃, and treating for 5-7 days at the temperature of more than 30 ℃ to soften and degrease the straw feed.
The method for forming the film by the corrugated roller film forming machine in the third step comprises the following steps: the method comprises the steps of filling prepared adhesive into a glue device of a machine, filling the prepared mixture A into a feeding device of the machine, starting a working motor, uniformly spreading the mixture A and the adhesive on the inner wall of a corrugated sheet of a machine roller through centrifugal force of a centrifugal disc of the machine, enabling the corrugated forming sheet group positioned on the periphery of the roller to axially move in a roller-leaving mode under the transmission of the motor, adjusting the transmission speed of the corrugated forming sheet group to obtain the thickness of a required turf felt, arranging a heating device around the roller, starting the heating device to dry and dewater the turf felt simultaneously, demoulding the turf felt at the tail end of the corrugated roller under the radial movement condition of the corrugated roller and cutting a turf felt roll with the required width under a cutting device to obtain a turf felt blank, adhering one side of the turf felt blank with a polypropylene fiber net through the adhesive, shaping and dewatering the turf felt with an auxiliary heating function through a grinding wheel group, and drying.
When the thickness of the grass felt is 6mm, the temperature of the heating device is set at 55 ℃, and the grass felt passes throughThe water content of 3 m corrugated tube is 28-32%, the roller set with auxiliary heating function is shaped, dehydrated and dried until the water content is 8-12%, and the rolling pressure is 8kg/cm2The drying temperature is 55 ℃, and the constant temperature is kept for 18 min.
Example three:
a fast-growing grass mat comprises straw powder, clay, bentonite, seeds, sodium humate, a binder and a polypropylene fiber net,
the mass ratio of the straw powder to the clay is 1: 0.5-1;
the mass ratio of the bentonite to the straw powder is 0.1-0.4:1, 20-120 meshes, the water content is less than or equal to 12 percent,
the mass ratio of the sodium humate to the straw powder is 0.05-0.15:1, the mesh number is 20-120, the water content is less than or equal to 12 percent,
the spreading density of the seeds is 600-3；
The binder amount was 100mL per unit brush application, 250mL per unit, 2mm thick 1m per unit2A surface area;
the pore diameter of the polypropylene fiber net is 3-5 cm.
The adhesive is polyvinyl alcohol glue, and the polyvinyl alcohol glue mainly comprises modified polyvinyl alcohol with the concentration of 6-14%.
The preparation method of the modified polyvinyl alcohol comprises the following steps: weighing a proper amount of PVA, adding water, carrying out water bath heating under electric stirring, controlling the water bath temperature to be 80-90 ℃, stopping heating after complete dissolution to obtain PVA glue, adding a proper amount of succinic acid into the PVA glue under a water bath with a certain temperature, stirring under a closed condition to react, and cooling to room temperature to obtain the modified PVA glue.
In the preparation method of the modified vinyl alcohol, the PVA gel mass concentration is 7%, the water bath reaction temperature is 85 ℃, and the mass ratio of the PVA gel to the succinic acid is 5.6: 1.
the size of the straw powder is 1-5 mm.
A method for preparing a fast-growing turf mat, comprising the steps of:
firstly, ammoniating straw powder; the ammonification treatment method is one of a cellar ammonification method, a plastic bag ammonification method and an oven ammonification method;
step two, uniformly mixing straw powder with clay, bentonite, seeds and sodium humate to obtain a mixture A, wherein the water content of the clay is 10-16%;
and step three, forming a film by a corrugated roller film forming machine to obtain the grass felt.
The ammoniation treatment in the first step comprises the following steps: crushing the straws into 1-5mm, taking a closed plastic film or an ammoniation cellar as a container, taking any nitrogen compound of liquid ammonia, ammonia water, urea and ammonium bicarbonate as a nitrogen source, using ammonia accounting for 2-3% of the weight of the air-dried straw material to ensure that the water content of the straws reaches 20-30%, treating for 7-14 days at the external temperature of 20-30 ℃, and treating for 5-7 days at the temperature of more than 30 ℃ to soften and degrease the straw feed.
The method for forming the film by the corrugated roller film forming machine in the third step comprises the following steps: the method comprises the steps of filling prepared adhesive into a glue device of a machine, filling the prepared mixture A into a feeding device of the machine, starting a working motor, uniformly spreading the mixture A and the adhesive on the inner wall of a corrugated sheet of a machine roller through centrifugal force of a centrifugal disc of the machine, enabling the corrugated forming sheet group positioned on the periphery of the roller to axially move in a roller-leaving mode under the transmission of the motor, adjusting the transmission speed of the corrugated forming sheet group to obtain the thickness of a required turf felt, arranging a heating device around the roller, starting the heating device to dry and dewater the turf felt simultaneously, demoulding the turf felt at the tail end of the corrugated roller under the radial movement condition of the corrugated roller and cutting a turf felt roll with the required width under a cutting device to obtain a turf felt blank, adhering one side of the turf felt blank with a polypropylene fiber net through the adhesive, shaping and dewatering the turf felt with an auxiliary heating function through a grinding wheel group, and drying.
When the thickness of the grass felt is 10mm, the temperature of the heating device is set at 58 ℃, the water content of the grass felt is 28-32% when the grass felt passes through a corrugated cylinder of 3 meters, the roller set with the auxiliary heating function is shaped, dehydrated and dried until the water content is 8-12%, and the rolling pressure is 15kg/cm2The drying temperature is 55 ℃, and the temperature is kept constant for 30 min.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A preparation method of a fast-growing turf felt is characterized by comprising the following steps: the fast-growing grass mat comprises straw powder, clay, bentonite, seeds, sodium humate, a bonding agent and a polypropylene fiber net,
the mass ratio of the straw powder to the clay is 1: 0.5-1;
the mass ratio of the bentonite to the straw powder is 0.1-0.4: 1; the mesh number is 20-120, the water content is less than or equal to 12 percent,
the mass ratio of the sodium humate to the straw powder is 0.05-0.15:1, the mesh number is 20-120, and the water content is less than or equal to 12%;
the spreading density of the seeds is 600-3;
The amount of the binder was 100mL per unit, 250mL per unit, 2mm thick 1m per unit2A surface area;
the pore diameter of the polypropylene fiber net is 3-5 cm;
the method comprises the following steps:
firstly, ammoniating straw powder; the ammonification treatment method is one of a cellar ammonification method, a plastic bag ammonification method and an oven ammonification method;
step two, uniformly mixing straw powder with clay, bentonite, seeds and sodium humate to obtain a mixture A, wherein the water content of the clay is 10-16%;
and step three, forming a film by a corrugated roller film forming machine to obtain the grass felt.
2. The method of making a fast growing turf mat as defined in claim 1 wherein: the adhesive is one of modified starch glue and polyvinyl alcohol glue, wherein the viscosity of the modified starch glue is 1200-1800 mpas, and the polyvinyl alcohol glue mainly comprises modified polyvinyl alcohol with the concentration of 6-14%.
3. The method of making a fast growing turf mat as defined in claim 2 wherein: the preparation method of the modified starch glue comprises the following steps: adding 190g of polyvinyl alcohol and a defoaming agent into 1000g of water, stirring and heating to 90 ℃ to completely dissolve the polyvinyl alcohol and the defoaming agent, stirring for 60min, adding 0.55g of ammonium persulfate when the temperature is reduced to 60 ℃, stirring for 10min, adding 76.4g of corn starch, stirring uniformly, adding a crosslinking agent, heating and heating, controlling the temperature at 75 ℃, keeping the temperature for 30min, adding 8.2g of rosin and 0.3g of dibutyl phthalate, stirring uniformly, and cooling to room temperature to obtain the modified starch glue.
4. The method of making a fast growing turf mat as defined in claim 2 wherein: the preparation method of the modified polyvinyl alcohol comprises the following steps: weighing a proper amount of PVA, adding water, carrying out water bath heating under electric stirring, controlling the water bath temperature to be 80-90 ℃, stopping heating after complete dissolution to obtain PVA glue, adding a proper amount of succinic acid into the PVA glue under a water bath with a certain temperature, stirring under a closed condition to react, and cooling to room temperature to obtain the modified PVA glue.
5. The method of making a fast growing turf mat as defined in claim 4 wherein: in the preparation method of the modified polyvinyl alcohol, the PVA gel mass concentration is 7%, the water bath reaction temperature is 85 ℃, and the mass ratio of the PVA gel to the succinic acid is 5.6: 1.
6. The method of making a fast growing turf mat as defined in claim 1 wherein: the size of the straw powder is 1-5 mm.
7. The method of making a fast growing turf mat as defined in claim 1 wherein: the ammoniation treatment in the first step comprises the following steps: crushing the straws into 1-5mm, taking a closed plastic film or an ammoniation cellar as a container, taking any nitrogen compound of liquid ammonia, ammonia water, urea and ammonium bicarbonate as a nitrogen source, using ammonia accounting for 2-3% of the weight of the air-dried straw material to ensure that the water content of the straws reaches 20-30%, treating for 7-14 days at the external temperature of 20-30 ℃, and treating for 5-7 days at the temperature of more than 30 ℃ to soften and degrease the straw feed.
8. The method of making a fast growing turf mat as defined in claim 7 wherein: the three methods for forming the film by the corrugated roller film forming machine comprise the following steps: the method comprises the steps of filling prepared adhesive into a glue device of a machine, filling the prepared mixture A into a feeding device of the machine, starting a working motor, uniformly spreading the mixture A and the adhesive on the inner wall of a corrugated sheet of a machine roller through centrifugal force of a centrifugal disc of the machine, enabling the corrugated sheet group positioned on the periphery of the roller to axially move in a roller-leaving mode under the transmission of the motor, adjusting the transmission speed of the corrugated sheet group to obtain the thickness of the grass felt, arranging a heating device around the roller, starting the heating device to dry and dewater the grass felt simultaneously, demoulding the grass felt at the tail end of the corrugated roller under the radial movement condition of the corrugated roller and cutting a grass felt roll with the required width under a cutting device to obtain a grass felt blank, bonding one side of the grass felt blank with a polypropylene fiber net through the adhesive, shaping and dewatering the grass felt roll with an auxiliary heating function, and drying.
9. The method of making a fast growing turf mat as defined in claim 8 wherein: the temperature of the heating device is set at 50-80 ℃, the water content of the straw felt is 28-32% when the straw felt passes through a corrugated cylinder of 3 meters, the roller set with the auxiliary heating function is shaped, dehydrated and dried until the water content is 8-12%, and the rolling pressure is 2kg/cm3-15kg/cm3The drying temperature is 55 deg.C, and the temperature is kept for 5min-30 min.
10. A fast-growing turf mat produced by the method of any one of claims 1 to 9.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105860877A (en) * 2016-05-11 2016-08-17 广西银洲科技有限公司 Addition agent for starch adhesive and preparation method and application method of addition agent for starch adhesive
CN106171383A (en) * 2016-07-01 2016-12-07 宁波华翔自然纤维科技有限公司 A kind of natural plant fiber grass felt and its preparation method and application
CN106748520A (en) * 2017-01-09 2017-05-31 闾传道 A kind of highly-water-soluble humic acid binder and preparation method thereof
CN109422984A (en) * 2017-08-25 2019-03-05 仲恺农业工程学院 Co-crosslinked modified starch/PVA (polyvinyl alcohol) fruit and vegetable preservative film and preparation method thereof
CN109618601A (en) * 2018-12-27 2019-04-16 敖伟 Planting blanket and desert treatment method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105860877A (en) * 2016-05-11 2016-08-17 广西银洲科技有限公司 Addition agent for starch adhesive and preparation method and application method of addition agent for starch adhesive
CN106171383A (en) * 2016-07-01 2016-12-07 宁波华翔自然纤维科技有限公司 A kind of natural plant fiber grass felt and its preparation method and application
CN106748520A (en) * 2017-01-09 2017-05-31 闾传道 A kind of highly-water-soluble humic acid binder and preparation method thereof
CN109422984A (en) * 2017-08-25 2019-03-05 仲恺农业工程学院 Co-crosslinked modified starch/PVA (polyvinyl alcohol) fruit and vegetable preservative film and preparation method thereof
CN109618601A (en) * 2018-12-27 2019-04-16 敖伟 Planting blanket and desert treatment method

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