CN112724483A - Rubber powder of vulcanized rubber, and manufacturing method and regenerated product based on rubber powder - Google Patents
Rubber powder of vulcanized rubber, and manufacturing method and regenerated product based on rubber powder Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L17/00—Compositions of reclaimed rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2272/00—Resin or rubber layer comprising scrap, waste or recycling material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/51—Elastic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/744—Non-slip, anti-slip
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
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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 discloses rubber powder of vulcanized rubber, a manufacturing method based on the rubber powder and a regenerated product, and belongs to the technical field of rubber regenerated products. The existing activation scheme still needs to add a plurality of additives, and the whole process is complicated, high in manufacturing cost and narrow in application range. The rubber powder of the vulcanized rubber is the vulcanized rubber powder obtained by crushing the vulcanized rubber at 50-120 ℃; the surface of the vulcanized rubber powder is completely or partially devulcanized, has reaction activity, is in an activated state and can be directly molded. The invention breaks the existing bias of vulcanized rubber powder use through continuous exploration and test, the vulcanized rubber powder in an activated state is obtained by crushing the vulcanized rubber at the activation temperature, and the one-step direct compression molding can be carried out without adding any additive.
Description
Technical Field
The invention relates to rubber powder of vulcanized rubber, a manufacturing method based on the rubber powder and a regenerated product, and belongs to the technical field of rubber regenerated products.
Background
Chinese patent (publication No. CN111019208A) discloses an activated rubber powder and a preparation method thereof, wherein the activated rubber powder comprises the following components: rubber powder, waste engine oil, essence and strong resin; the preparation method of the activated rubber powder comprises the following steps: preparing 60-mesh rubber powder by taking waste tires as raw materials; adding waste engine oil, essence and strong resin into 60-mesh rubber powder, mixing, loading the mixture into a devulcanizer, introducing 0.3Mpa steam into the devulcanizer, and relieving pressure and exhausting when the pressure in the devulcanizer reaches 0.9Mpa to obtain modified rubber powder; and cooling the modified rubber powder to below 40 ℃, screening the agglomerated rubber powder by using a vibrating screen paved with a 20-mesh screen, and then metering and packaging to obtain the finished product of activated rubber powder. The invention solves the problems that the prior common rubber powder has unobvious modification effect on asphalt and can discharge a large amount of gases such as carbon dioxide, hydrogen sulfide and the like in the use process.
However, the above activating scheme still needs to add a plurality of additives, which is not environment-friendly enough, the whole process is complicated, the manufacturing period is long, time and labor are wasted, the manufacturing cost is high, and the prepared activated rubber powder can only be used as an asphalt modifier, has narrow application range, and is not beneficial to popularization and use.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide vulcanized rubber powder in an activated state, which can be directly molded in one step, has simple production method, short manufacturing flow, lower manufacturing cost, time and labor conservation and high environmental protection, and is suitable for manufacturing vulcanized rubber powder of various rubber regenerated products and a manufacturing method thereof.
The invention also aims to provide a rubber reclaimed product which is prepared on the basis of the vulcanized rubber powder, can be directly molded in one step without adding any additive by utilizing the vulcanized rubber powder in an activated state, has simple whole production method, short manufacturing flow, good product service performance and lower manufacturing cost, and is environment-friendly.
In order to achieve the first purpose, the technical scheme of the invention is as follows:
a rubber powder of vulcanized rubber,
the rubber powder is vulcanized rubber powder obtained by crushing vulcanized rubber at 50-120 ℃;
the surface of the vulcanized rubber powder is completely or partially devulcanized, has reaction activity, is in an activated state and can be directly molded.
Through continuous exploration and test, the invention breaks through the existing use prejudice of vulcanized rubber powder, and the invention manufactures the rubber powder with the surface devulcanized, namely, the vulcanized rubber is crushed at the activation temperature to obtain the vulcanized rubber powder in the activation state, and the rubber powder can be directly molded into rubber regeneration products in one step under the condition of not adding any additive.
Compared with a forming scheme of adding glue, the invention can reduce the manufacturing cost by 70-90% and has great economic benefit.
As a preferable technical measure:
the vulcanized rubber powder comprises a plurality of powder particles;
the powder particles comprise a desulfurization layer positioned on the surface of the particles and a vulcanization layer positioned in the particles;
the desulfurization layer enables the powder particles to have viscosity, and further enables a plurality of powder particles to be directly molded together;
the vulcanized layer enables the powder particles to have structural strength, and the sticky desulfurized layer enables a plurality of powder particles to be pressed into rubber regeneration products.
Through continuous exploration and tests, the invention fully considers the structural characteristics of vulcanized rubber powder, can produce powder particles with a desulfurization layer on the surface and a vulcanization layer inside, fully utilizes the structural strength of the vulcanization layer and the viscosity of the desulfurization layer, can form rubber reclaimed products by one-step die pressing under the condition of not adding any additive (adhesive), has simple scheme, ingenious design, short manufacturing flow, lower manufacturing cost, environmental protection, trouble and labor saving, is beneficial to popularization and use, is suitable for manufacturing various rubber products, and has huge economic benefit.
As a preferable technical measure:
the desulfurization layer is dissolved into sticky rubber at the molding temperature of 160-230 ℃ and the molding pressure of 15-60MPa, so that the powder particles can be bonded together, and the rubber regeneration product is formed after the molding time of 15-60 min;
the vulcanized rubber is waste rubber, the waste rubber is waste tire rubber or waste vulcanized rubber leftover materials of factories and all vulcanized rubber products can be recycled.
A manufacturing method based on vulcanized rubber powder,
the manufacturing method comprises the following steps:
the first step, classifying different vulcanized rubbers to facilitate crushing;
secondly, crushing vulcanized rubber at an activation temperature to prepare vulcanized rubber powder in an activation state;
thirdly, paving the vulcanized rubber powder on a mold;
and fourthly, directly molding the vulcanized rubber powder on a molding press to prepare a rubber regenerated product.
The invention breaks the existing bias of vulcanized rubber powder use through continuous exploration and test, the vulcanized rubber powder in an activated state is obtained by crushing the vulcanized rubber at the activation temperature, and the one-step direct compression molding can be carried out without adding any additive.
Compared with a mould pressing scheme of adding glue, the invention can reduce the manufacturing cost by 70-90% and has great economic benefit.
As a preferable technical measure:
the rubber regenerated product is a flat plate structure or a special-shaped piece with a certain shape or a toy or a tool;
the activation temperature is 50-120 ℃;
the vulcanized rubber powder in the activated state is rubber powder with the surface completely or partially devulcanized; after the surface of the rubber powder is subjected to devulcanization, the rubber powder is changed into rubber particles in an activated state, and the rubber particles can be directly subjected to compression molding under the high-temperature and high-pressure environment without any additive.
The mesh number of the vulcanized rubber powder is 20-200 meshes, the vulcanized rubber powder with different mesh numbers is subjected to grading treatment according to the requirements of regenerated products, and the vulcanized rubber powder with different mesh numbers is applied according to different products and scenes.
As a preferable technical measure:
for the multilayer rubber flat plate structure, vulcanized rubber powder with different meshes is paved on a mould in a layering way according to a paving sequence;
then, directly carrying out compression molding at one time on a molding press at high temperature and high pressure without doping an additive;
the temperature during the mould pressing is 160-230 ℃;
the molding pressure is 15-60 MPa;
the molding time is 15-60 min.
In order to achieve the second purpose, the technical scheme of the invention is as follows:
a rubber flat plate manufactured based on vulcanized rubber powder,
the rubber flat plate is manufactured by the manufacturing method based on vulcanized rubber powder;
the rubber flat plate is made of footpath, ground mat and sound insulation material for body building.
Through continuous exploration and tests, the invention breaks the existing bias of vulcanized rubber powder use, the invention crushes vulcanized rubber at the activation temperature (50-120 ℃) to obtain the vulcanized rubber powder in the activation state, and the vulcanized rubber powder can be directly molded into a rubber flat plate in one step without adding any additive (adhesive).
Compared with the existing molding scheme of adding the adhesive, the invention can reduce the manufacturing cost by 70-90% and has great economic benefit.
As a preferable technical measure:
the footpath is formed by sequentially compounding a buffer layer, an elastic layer and a wear-resistant layer;
the wear-resistant layer is arranged above the elastic layer, and the buffer layer is arranged below the elastic layer;
the thickness of the buffer layer is 2-8 mm, the thickness of the elastic layer is 3-5 mm, the thickness of the wear-resistant layer is 1-5 mm, and the thickness of the whole body-building footpath is 6-18 mm.
The invention adopts a three-layer structure design, fully exerts the characteristics of excellent performance of the gradient functional material and has good product use performance. The surface wear-resistant layer is made of wear-resistant anti-aging rubber antiskid rubber materials and a wear-resistant antiskid surface layer structure, and the wear-resistant performance is excellent. The middle elastic layer can effectively enhance the resilience performance of the surface, the bottom buffer layer can enhance the effective buffer function, the impact problem during the motion of the human body is effectively relieved, and the problem of impact injury during the motion of the human body is reduced.
As a preferable technical measure:
the vulcanized rubber powder in the activated state comprises a plurality of powder particles with the surfaces being wholly or partially desulfurized;
the powder particles comprise a desulfurization layer positioned on the surface of the particles and a vulcanization layer positioned in the particles;
the desulfurization layer enables the powder particles to have viscosity, and further enables the powder particles to be directly molded together without adhesives;
the vulcanized layer enables the powder particles to have structural strength, and the stickiness of the vulcanized layer is utilized, so that the powder particles can be pressed into the rubber flat plate.
Through continuous exploration and tests, the structural characteristics of vulcanized rubber powder are fully considered, the powder particles with the surface provided with the vulcanized layer and the inside provided with the vulcanized layer are manufactured, the structural strength of the vulcanized layer and the viscosity of the vulcanized layer are fully utilized, the rubber reclaimed product can be molded in one step under the condition of not adding any additive (adhesive), the scheme is simple, the concept is ingenious, the manufacturing process is short, the manufacturing cost is lower, the environment is protected, the trouble and the labor are saved, the rubber reclaimed product is beneficial to popularization and use, and the rubber reclaimed product is suitable for manufacturing various rubber flat plates and has huge economic benefit.
As a preferable technical measure:
a ground mat manufactured based on vulcanized rubber powder,
is molded by vulcanized rubber powder in an activated state;
the vulcanized rubber powder in the activated state comprises a plurality of powder particles with the surfaces being wholly or partially desulfurized;
the powder particles comprise a desulfurization layer positioned on the surface of the particles and a vulcanization layer positioned in the particles;
the desulfurization layer enables the powder particles to have viscosity, and further enables the powder particles to be directly molded together without adhesives;
the vulcanized layer enables the powder particles to have structural strength, and the stickiness of the desulfurized layer is utilized, so that the powder particles can be pressed into the ground mat;
the rubber powder is prepared by crushing vulcanized rubber at 50-120 ℃;
the mesh number of the vulcanized rubber powder is 20-200 meshes;
when the mould pressing is carried out, no additive is added,
the mould pressing temperature is 160-230 ℃;
the molding pressure is 15-60 MPa;
the molding time is 15-60 min.
Through continuous exploration and tests, the structural characteristics of vulcanized rubber powder are fully considered, the powder particles with the surface provided with the vulcanized layer and the inside provided with the vulcanized layer are manufactured, the structural strength of the vulcanized layer and the viscosity of the vulcanized layer are fully utilized, the floor mat can be molded in one step under the condition of not adding any additive (adhesive), the scheme is simple, the concept is ingenious, the manufacturing process is short, the manufacturing cost is lower, the environment is protected, the trouble and the labor are saved, the popularization and the use are facilitated, the rubber floor mat is suitable for manufacturing various rubber floor mats, and the economic benefit is huge.
Compared with the prior art, the invention has the following beneficial effects:
the invention breaks the existing bias of vulcanized rubber powder use through continuous exploration and test, the vulcanized rubber powder in an activated state is obtained by crushing the vulcanized rubber at the activation temperature, and the one-step direct compression molding can be carried out without adding any additive. Compared with a mould pressing scheme of adding glue, the invention can reduce the manufacturing cost by 70-90% and has great economic benefit.
Drawings
FIG. 1 is a cross-sectional view of the powder particle structure of the present invention;
fig. 2 is a diagram of the structure of the footpath of the present invention.
Description of reference numerals:
1. a desulfurization layer; 2. a vulcanized layer; 3. a wear layer; 4. a buffer layer; 5. an elastic layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
A rubber powder of vulcanized rubber,
the rubber powder is vulcanized rubber powder obtained by crushing vulcanized rubber at 50-120 ℃;
the surface of the vulcanized rubber powder is completely or partially devulcanized, has reaction activity, is in an activated state and can be directly molded.
The invention breaks the existing bias of vulcanized rubber powder use through continuous exploration and test, the invention manufactures the rubber powder with the surface devulcanized, namely, the vulcanized rubber is crushed at the activation temperature to obtain the vulcanized rubber powder in the activation state, and the rubber powder can be directly molded into rubber regeneration products in one step under the condition of not adding any additive.
Compared with a forming scheme of adding glue, the invention can reduce the manufacturing cost by 70-90% and has great economic benefit.
As shown in FIG. 1, a specific example of the vulcanized rubber powder structure of the present invention
The vulcanized rubber powder comprises a plurality of powder particles;
the powder particles comprise a desulfurization layer 1 positioned on the surface of the particles and a vulcanization layer 2 positioned in the particles;
the desulfurization layer 1 enables the powder particles to have viscosity, and further enables a plurality of powder particles to be directly molded together;
the vulcanized layer 2 enables the powder particles to have structural strength, and the sticky desulfurized layer 1 enables a plurality of powder particles to be pressed into rubber regeneration products.
Through continuous exploration and tests, the invention fully considers the structural characteristics of vulcanized rubber powder, can produce powder particles with a surface provided with a vulcanized layer 1 and an internal vulcanized layer 2, fully utilizes the structural strength of the vulcanized layer 2 and the viscosity of the vulcanized layer 1, can form rubber reclaimed products by one-step die pressing under the condition of not adding any additive (adhesive), has simple scheme, ingenious conception, short manufacturing flow, lower manufacturing cost, environmental protection, labor saving and time saving, is beneficial to popularization and use, is suitable for manufacturing various rubber products, and has huge economic benefit.
The desulfurization layer 1 is dissolved into sticky rubber at the molding temperature of 160-230 ℃ and the molding pressure of 15-60MPa, so that the powder particles can be adhered together, and the rubber regeneration product is formed after the molding time of 15-60 min;
the vulcanized rubber is waste rubber, the waste rubber is waste tire rubber or leftover materials of factory vulcanized rubber and all vulcanized rubber products can be recycled.
The embodiment of the preparation method of the activated rubber powder of the invention comprises the following steps:
a manufacturing method based on vulcanized rubber powder mainly comprises the following steps: waste rubber → sorting → coarse crushing → fine crushing → sieving → layered paving → high temperature and high pressure molding → product.
The manufacturing method comprises the following steps:
the first step, classifying different vulcanized rubbers to facilitate crushing;
secondly, crushing vulcanized rubber at an activation temperature to prepare vulcanized rubber powder in an activation state;
thirdly, paving the vulcanized rubber powder on a mold;
and fourthly, directly molding the vulcanized rubber powder on a molding press to prepare a rubber regenerated product.
The invention breaks through the existing bias of vulcanized rubber powder use through continuous exploration and test, the invention crushes the vulcanized rubber at the activation temperature to obtain the vulcanized rubber powder in the activation state, can directly carry out compression molding in one step without adding any additive, has simple production method,short manufacturing process, low manufacturing cost, and suitability for manufacturing various productsVulcanizationRubber regenerated products.
Compared with a mould pressing scheme of adding glue, the invention can reduce the manufacturing cost by 70-90% and has great economic benefit.
The rubber regenerated product is a flat plate structure or a special-shaped piece with a certain shape or a toy or a tool;
the activation temperature is 50-120 ℃;
the vulcanized rubber powder in the activated state is rubber powder with the surface completely or partially devulcanized; after the surface of the rubber powder is subjected to devulcanization, the rubber powder is changed into rubber particles in an activated state, and the rubber particles can be directly subjected to compression molding under the high-temperature and high-pressure environment without any additive.
The mesh number of the vulcanized rubber powder is 20-200 meshes, the vulcanized rubber powder with different mesh numbers is subjected to grading treatment according to the requirements of regenerated products, and the vulcanized rubber powder with different mesh numbers is applied according to different products and scenes.
One embodiment of the multilayer rubber structure of the invention
For the multilayer rubber flat plate structure, vulcanized rubber powder with different meshes is paved on a mould in a layering way according to a paving sequence;
then, directly carrying out compression molding at one time on a molding press at high temperature and high pressure without doping an additive;
the temperature during the mould pressing is 160-230 ℃;
the molding pressure is 15-60 MPa;
the molding time is 15-60 min.
One example of the application of the activated glue powder of the invention:
a rubber flat plate manufactured based on vulcanized rubber powder,
the rubber flat plate is manufactured by the manufacturing method based on vulcanized rubber powder;
the rubber flat plate is made of footpath, ground mat and sound insulation material for body building.
Through continuous exploration and tests, the invention breaks the existing bias of vulcanized rubber powder use, the invention crushes vulcanized rubber at the activation temperature (50-120 ℃) to obtain the vulcanized rubber powder in the activation state, and the vulcanized rubber powder can be directly molded into a rubber flat plate in one step without adding any additive (adhesive).
Compared with the existing molding scheme of adding the adhesive, the invention can reduce the manufacturing cost by 70-90% and has great economic benefit.
As shown in FIG. 2, an embodiment of the walkway construction of the present invention
The footpath is formed by sequentially compounding a buffer layer 4, an elastic layer 5 and a wear-resistant layer 3; the composite mode is that 3 layers are directly molded at high temperature and high pressure once.
The wear-resistant layer 3 is arranged above the elastic layer 5, and the buffer layer 4 is arranged below the elastic layer 5;
the thickness of the buffer layer 4 is 2-8 mm, the thickness of the elastic layer 5 is 3-5 mm, the thickness of the wear-resistant layer 3 is 1-5 mm, and the thickness of the whole body-building footpath is 6-18 mm.
The invention adopts a three-layer structure design, fully exerts the characteristics of excellent performance of the gradient functional material and has good product use performance. The surface wear-resistant layer 3 is made of wear-resistant anti-aging rubber antiskid rubber materials and a wear-resistant antiskid surface layer structure, and has excellent wear resistance. The middle elastic layer 5 can effectively enhance the resilience performance of the surface, the bottom buffer layer 4 can enhance the effective buffer function, the impact problem during the motion of the human body is effectively relieved, and the problem of impact injury during the motion of the human body is reduced.
One specific embodiment of the vulcanized rubber powder structure for footpaths of the present invention
The vulcanized rubber powder in the activated state comprises a plurality of powder particles with the surfaces being wholly or partially desulfurized;
the powder particles comprise a desulfurization layer 1 positioned on the surface of the particles and a vulcanization layer 2 positioned in the particles;
the desulfurization layer 1 enables the powder particles to have viscosity, and further enables the powder particles to be directly molded together without adhesives;
the vulcanized layer 2 enables the powder particles to have structural strength, and the stickiness of the desulfurized layer 1 is utilized, so that the powder particles can be pressed into a rubber flat plate.
Through continuous exploration and tests, the structural characteristics of vulcanized rubber powder are fully considered, the powder particles with the surface provided with the vulcanized layer 1 and the inside provided with the vulcanized layer 2 are manufactured, the structural strength of the vulcanized layer 2 and the viscosity of the vulcanized layer 1 are fully utilized, the rubber reclaimed product can be molded in one step without adding any additive (adhesive), the scheme is simple, the concept is ingenious, the manufacturing process is short, the manufacturing cost is lower, the environment is protected, the trouble and the labor are saved, the rubber reclaimed product is beneficial to popularization and use, and the rubber reclaimed product is suitable for manufacturing various rubber flat plates, and has huge economic benefit.
An example of the use of the activated gum powder of the present invention to make a floor mat:
a ground mat manufactured based on vulcanized rubber powder,
is molded by vulcanized rubber powder in an activated state;
the vulcanized rubber powder in the activated state comprises a plurality of powder particles with the surfaces being wholly or partially desulfurized;
the powder particles comprise a desulfurization layer 1 positioned on the surface of the particles and a vulcanization layer 2 positioned in the particles;
the desulfurization layer 1 enables the powder particles to have viscosity, and further enables the powder particles to be directly molded together without adhesives;
the vulcanized layer 2 enables the powder particles to have structural strength, and the stickiness of the desulfurized layer 1 is utilized, so that a plurality of powder particles can be pressed into a ground mat;
the rubber powder is prepared by crushing vulcanized rubber at 50-120 ℃;
the mesh number of the vulcanized rubber powder is 20-200 meshes;
when the mould pressing is carried out, no additive is added,
the mould pressing temperature is 160-230 ℃;
the molding pressure is 15-60 MPa;
the molding time is 15-60 min.
Through continuous exploration and tests, the structural characteristics of vulcanized rubber powder are fully considered, the powder particles with the surface provided with the vulcanized layer 1 and the inside provided with the vulcanized layer 2 are manufactured, the structural strength of the vulcanized layer 2 and the viscosity of the vulcanized layer 1 are fully utilized, the floor mat can be molded in one step without adding any additive (adhesive), the scheme is simple, the concept is ingenious, the manufacturing process is short, the manufacturing cost is lower, the floor mat is environment-friendly, trouble-saving and labor-saving, the floor mat is beneficial to popularization and use, and is suitable for manufacturing various rubber floor mats, and the economic benefit is huge.
The preferred embodiment of the present invention for producing a fitness footpath:
the invention relates to a method for manufacturing a body-building footpath directly by vulcanized rubber powder, which comprises the following manufacturing processes:
(1) different types of vulcanized rubber are classified first to facilitate crushing.
(2) The rubber is crushed at normal temperature to be prepared into vulcanized rubber powder with different meshes, the meshes of the vulcanized rubber powder are 20-120 meshes, and corresponding grading treatment is carried out.
(3) And (3) paving the vulcanized rubber powder with different meshes on the mould in a layering way according to the paving sequence.
(4) The body-building footpath is manufactured by adopting a high-temperature high-pressure one-step direct die pressing on a die pressing machine.
The molding temperature is 160-230 ℃.
The molding pressure is 15-60 MPa.
The molding time is 15-60 min.
The invention directly produces the body-building footpath by one step from vulcanized rubber powder and has the characteristics of simple process and low cost. Because the adopted main raw material is waste vulcanized rubber (such as vulcanized rubber edges in factories), the cost is saved and the rubber resource is effectively utilized.
Examples of the invention using scrap tire rubber:
firstly, sorting waste rubber, for example, firstly, roughly crushing waste tyre rubber, removing steel wires and cord threads, then carrying out activation crushing at 50-120 ℃, placing the obtained 20-200 mesh part of desulfurized rubber powder on a mould to be uniformly spread, and then directly carrying out mould pressing under the conditions of 160-230 ℃, 60MPa of pressure and 15-30 minutes to form a body-building footpath with the thickness of 6-18 mm.
The embodiment of the invention using the waste ethylene propylene rubber of the factory comprises the following steps:
sorting the waste ethylene propylene rubber powder, removing impurities, activating and crushing at 50-120 ℃, placing the obtained 20-200 mesh desulfurized rubber powder on a mold to be spread uniformly, and pressing at 160-230 ℃, under 40MPa for 25 minutes to form a 13mm fitness footpath.
The invention uses the rubber track and basketball court material as the embodiment:
firstly, the materials of sports rubber track and basketball court recovered in factory are crushed and sorted, then the impurities are removed, then the activation crushing is carried out at 50-120 ℃, the obtained 20-200 mesh part of desulfurized rubber powder is placed on a mould to be spread evenly, and then the desulfurized rubber powder is directly moulded into the body-building footpath with the thickness of 6-18mm under the conditions of the temperature of 160-230 ℃, the pressure of 60MPa and the time of 15-30 minutes.
The invention can produce vulcanized rubber powder in an activated state, and the novel environment-friendly fitness footpath is produced by one-step direct compression molding according to the novel powder processing technical method, has simple production method, short production flow, good product usability, simple construction and use and lower cost, and is suitable for application in walking, running and riding fitness footpaths.
By adopting the simple and practical technical scheme, the body-building footpath produced by the method has the characteristics of simple manufacturing process, excellent product performance, good impact resistance and falling damage resistance, convenient construction and lower cost.
The invention has the following advantages:
1. the fully vulcanized rubber powder is used for manufacturing, so that the environmental protection of the existing fitness footpath is improved, and the rubber resource is saved.
2. The three-layer composite one-step compression molding technology is practical and simple, and has the advantages of simple production, convenient construction and application and lower cost.
3. The body-building footpath produced by the invention has reasonable structure, good elasticity, simple and convenient construction and good application performance, can reduce possible sports injury of sports body-building, and is a safe, healthy and environment-friendly body-building footpath product.
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 rubber powder of vulcanized rubber is characterized in that,
the rubber powder is vulcanized rubber powder obtained by crushing vulcanized rubber at 50-120 ℃;
the surface of the vulcanized rubber powder is completely or partially devulcanized, has reaction activity, is in an activated state and can be directly molded.
2. A rubber powder of vulcanized rubber according to claim 1,
the vulcanized rubber powder comprises a plurality of powder particles;
the powder particles comprise a desulfurization layer (1) positioned on the surface of the particles and a vulcanization layer (2) positioned in the particles;
the desulfurization layer (1) enables the powder particles to have viscosity, and then enables a plurality of powder particles to be directly molded together;
the vulcanized layer (2) enables the powder particles to have structural strength, and then the adhesive desulfurized layer (1) enables a plurality of powder particles to be pressed into rubber regeneration products.
3. A rubber powder of vulcanized rubber according to claim 2,
the desulfurization layer (1) is dissolved into sticky rubber under the conditions of the die pressing temperature of 160-230 ℃ and the die pressing pressure of 15-60MPa, so that the powder particles can be adhered together, and the rubber regeneration product is formed after the molding time of 15-60 min;
the vulcanized rubber is waste rubber, and the waste rubber is waste tire rubber or waste vulcanized rubber leftover materials discarded in factories and all vulcanized rubber products can be recycled.
4. A manufacturing method based on vulcanized rubber powder is characterized in that,
the manufacturing method comprises the following steps:
the first step, classifying different vulcanized rubbers to facilitate crushing;
secondly, crushing vulcanized rubber at an activation temperature to prepare vulcanized rubber powder in an activation state;
thirdly, paving the vulcanized rubber powder on a mold;
and fourthly, directly molding the vulcanized rubber powder on a molding press to prepare a rubber regenerated product.
5. A process for the manufacture of a vulcanized rubber powder-based composition according to claim 4,
the rubber regenerated product is a flat plate structure or a special-shaped piece with a certain shape or a toy or a tool;
the activation temperature is 50-120 ℃;
the vulcanized rubber powder in the activated state is rubber powder with the surface completely or partially devulcanized;
the mesh number of the vulcanized rubber powder is 20-200 meshes, and the vulcanized rubber powder with different mesh numbers is graded according to the requirements of regenerated products.
6. A process for the manufacture of a vulcanized rubber powder-based composition according to claim 5,
for the multilayer rubber flat plate structure, vulcanized rubber powder with different meshes is paved on a mould in a layering way according to a paving sequence;
then, directly carrying out compression molding at one time on a molding press at high temperature and high pressure without doping an additive;
the temperature during the mould pressing is 160-230 ℃;
the molding pressure is 15-60 MPa;
the molding time is 15-60 min.
7. A rubber flat plate manufactured based on vulcanized rubber powder is characterized in that,
the rubber flat plate is manufactured by adopting the manufacturing method based on vulcanized rubber powder as claimed in any one of claims 4 to 6;
the rubber flat plate is made of footpath, ground mat and sound insulation material for body building.
8. A rubber slab made from vulcanized rubber powder according to claim 7,
the footpath is formed by sequentially compounding a buffer layer (4), an elastic layer (5) and a wear-resistant layer (3);
the wear-resistant layer (3) is arranged above the elastic layer (5), and the buffer layer (4) is arranged below the elastic layer (5);
buffer layer (4) thickness be 2~8mm, elastic layer (5) thickness 3~5mm, wearing layer (3) thickness 1~5mm, the pavement thickness of whole body-building usefulness is 6~18 mm.
9. A rubber slab made from vulcanized rubber powder according to claim 8,
the vulcanized rubber powder in the activated state comprises a plurality of powder particles with the surfaces being wholly or partially desulfurized;
the powder particles comprise a desulfurization layer (1) positioned on the surface of the particles and a vulcanization layer (2) positioned in the particles;
the desulfurization layer (1) enables the powder particles to have viscosity, and then the powder particles can be directly molded together without adhesives;
the vulcanized layer (2) enables the powder particles to have structural strength, and the stickiness of the vulcanized layer (1) is utilized, so that the powder particles can be pressed into a rubber flat plate.
10. A ground mat manufactured based on vulcanized rubber powder is characterized in that,
is molded by vulcanized rubber powder in an activated state;
the vulcanized rubber powder in the activated state comprises a plurality of powder particles with the surfaces being wholly or partially desulfurized;
the powder particles comprise a desulfurization layer (1) positioned on the surface of the particles and a vulcanization layer (2) positioned in the particles;
the desulfurization layer (1) enables the powder particles to have viscosity, and then the powder particles can be directly molded together without adhesives;
the vulcanized layer (2) enables the powder particles to have structural strength, and then the stickiness of the vulcanized layer (1) is utilized, so that a plurality of powder particles can be pressed into a ground mat;
the rubber powder is prepared by crushing vulcanized rubber at 50-120 ℃;
the mesh number of the vulcanized rubber powder is 20-200 meshes;
when the mould pressing is carried out, no additive is added,
the mould pressing temperature is 160-230 ℃;
the molding pressure is 15-60 MPa;
the molding time is 15-60 min.
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