CN109824332B - Composite material for building beehive and process for building beehive by using composite material - Google Patents
Composite material for building beehive and process for building beehive by using composite material Download PDFInfo
- Publication number
- CN109824332B CN109824332B CN201910280093.0A CN201910280093A CN109824332B CN 109824332 B CN109824332 B CN 109824332B CN 201910280093 A CN201910280093 A CN 201910280093A CN 109824332 B CN109824332 B CN 109824332B
- Authority
- CN
- China
- Prior art keywords
- beehive
- composite material
- building
- parts
- cuboid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Building Environments (AREA)
Abstract
The invention discloses a composite material for building beehives and a process for building the beehives by using the composite material, which comprises the following raw materials: closed-cell perlite, vitrified micro bubbles, clay, Portland cement, hydrated lime and a soil curing agent. The invention has the beneficial effects that: the beehive built by the composite material has higher strength, is not afraid of rain and water bubbles, has good heat preservation and cold resistance, can improve the honey yield of bees, and improves the production benefit of bee keepers. The beehive built by the composite material takes clay as a main material, has low manufacturing cost and long service life, has good heat preservation, heat insulation and dehumidification performances, and is not easy to breed bacteria; the beehive is safe and firm, has the effect of preventing insects and ants, and can ensure healthy and vigorous growth of bee colonies, thereby improving the quality of original ecological honey.
Description
Technical Field
The invention relates to the technical field of beehives and supporting facilities thereof, in particular to a composite material for building the beehive and a process for building the beehive by using the composite material.
Background
The bee-keeping industry is an industry which occupies no field and land, has less investment and great benefit and has larger development potential. In recent years, the bee-keeping industry is concerned by the nation, the bee-keeping development planning is appointed, the bee-keeping management method is issued, the organization and management of bee-keeping production are enhanced, and the steady and healthy development of the bee-keeping industry is promoted powerfully. The development of bee industry science and technology drives the improvement of bee industry, the bee-keeping enthusiasm of bee farmers is high, particularly, bee farmers in poor areas urgently need to improve the scientific bee-keeping level, and the bee-keeping benefit is greatly improved.
At present, most beehives used by people are made of wood, and have the defects of high manufacturing cost, ecological damage caused by felling trees, easy breeding of bacteria and insects and ants, no excellent cold-proof and warm-keeping effects, summer decay and production stop of bee colonies caused by summer heat, and frozen bee colonies caused by winter supercooling, and short service life, so that an environment-friendly material with low cost and excellent performance is urgently needed to replace wood beehives.
Disclosure of Invention
The invention aims to provide a composite material for building a beehive, which has low cost and cold-proof and warm-keeping functions, and a process for building the beehive by using the composite material.
A composite material for building a beehive comprises the following raw materials in parts by weight: 2-3 parts of closed-cell perlite, 1-2 parts of vitrified micro bubbles, 60-80 parts of clay, 10-20 parts of Portland cement, 8-15 parts of hydrated lime and 0.008-0.012 part of soil curing agent.
Further, the composite material for building the beehive comprises the following raw materials in parts by weight: 2.5 parts of closed-cell perlite, 1.5 parts of vitrified micro bubbles, 70 parts of clay, 15 parts of Portland cement, 12 parts of hydrated lime and 0.01 part of soil curing agent.
The process for building the beehive by using the composite material comprises the following steps:
(1) mixing and stirring the raw materials uniformly for later use;
(2) manufacturing a beehive plate mold, pouring a composite material for building the beehive into the beehive plate mold, demolding after the composite material is solidified, and laminating and maintaining to obtain the beehive plate;
(3) a beehive body with a containing cavity is built by using the beehive plate, and a movable frame is placed in the beehive body to obtain the beehive.
When the beehive is used, the beehive is placed on a plane (because the bottom of the beehive is not needed to be manufactured when the beehive is manufactured, the beehive is placed on the plane for use), and a beehive inlet is formed in the wall of the beehive. The push-pull type garbage cleaning plate is arranged at the bottom of the beehive, so that garbage in the beehive body can be conveniently cleaned.
When the preparation beehive, for making the beehive more firm, can be when pouring combined material, at the in-process that the beehive panel formed, at its internal surface bonding one deck glass fiber net cloth or cotton gauze, increase the fastness of box, if the thickness of beehive panel is enough thick, reach more than 5cm, can not bond glass fiber net cloth or cotton gauze, and can remove the obturator pearlite in the raw materials, because of enough thick beehive panel itself has very strong fastness and good heat preservation heat-proof quality, saved the raw materials promptly and guaranteed the fastness performance of beehive itself again like this.
Further, in the step (2), the shape of the beehive plate mould is a cuboid with a containing cavity inside, and the length of the beehive plate mould is 30-35 cm, the width of the beehive plate mould is 22-28 cm, and the height of the beehive plate mould is 3-5 cm; the beehive plate die is internally provided with a convex edge which is vertically fixed in the accommodating cavity, and the length of the convex edge is greater than the height of the beehive plate die.
Further, the length of the rib is 0.8-1.2 cm greater than the height of the beehive plate die.
Pouring the composite material for building the beehive into the beehive plate mould, so that a cuboid plate with the length of 30-35 cm, the width of 22-28 cm and the height of 3-5 cm is formed in the beehive plate mould. Because of being provided with the bead in beehive panel mould, just can form the hole like this at the corresponding position on the cuboid board, the setting of hole is convenient for fix two adjacent cuboid boards.
Furthermore, the convex edges are fixed along the wide edges of the beehive plate die, and two convex edges are fixed at each wide edge.
Furthermore, the distance between the convex rib and the adjacent wide edge is 3-4 cm, and the wide edge is trisected by a connecting line between the two convex ribs and the wide edge which are positioned at the same wide edge.
When the beehive is built by using the beehive plates, the width edge of each beehive plate is used as the height of the beehive, and thus, the holes are arranged along the width edge to facilitate the fixed connection of the two adjacent beehive plates.
Further, in the step (2), the film coating and curing are as follows: and coating a film on the surface of the solidified composite material, and naturally drying and curing for 12-18 days.
Further, two holes are formed in the positions of two wide edges of the obtained beehive plate.
Further, in step (3), enclose into a cuboid with four beehive panels, pass hole on the beehive panel with iron wire or plastic strapping and fix two adjacent beehive panels, a "people" font beehive lid is built at the top of cuboid to two beehive panels of reuse, the hole between case lid and the cuboid is spliced with the plank, then cover the combined material that the beehive was built to the surface at the beehive one deck, form the airtight beehive body that has the cavity in, and set up the vent on the case lid, cover the vent lid on the vent. The ventilation size of the ventilation opening can be adjusted for convenient use.
The closed-cell perlite is formed by uniformly expanding perlite ore sand with a certain particle size from inside to outside after reaching a certain temperature in a vertical electric furnace step heating mode, the surface of expanded particles is subjected to instantaneous high-temperature vitrification and is cooled to form a continuous vitrified particle surface, and the inside of the expanded particle surface is kept in a complete porous and hollow structure, so that the product keeps the purity of natural inorganic chemical components of the perlite due to a unique production mode. The closed-cell perlite overcomes the defects of high water absorption, low strength and poor fluidity of the traditional expanded perlite, extends the application field of the expanded perlite, has the characteristics of high strength, low water absorption, good mixing property, easy dispersion and the like, is a main ingredient for producing thermal insulation mortar, thermal insulation coating, refractory brick and enamel material, and is widely applied to aggregates of internal and external thermal insulation mortar, refractory materials, decorative plates and thermal insulation plates of walls.
The vitrified micro bubbles form a certain particle strength due to surface vitrification, have very stable physical and chemical properties and strong aging resistance and weather resistance, have excellent heat insulation, fire prevention and sound absorption properties, and are suitable for being used as light filling aggregates and heat insulation, fire prevention, sound absorption and heat preservation materials in various fields. The vitrified micro bubbles are used as the lightweight aggregate, so that the workability and the self-resistance strength of the mortar can be improved, the material shrinkage rate is reduced, the comprehensive performance of the product is improved, and the comprehensive production cost is reduced.
Clay is an important mineral raw material and consists of various hydrated silicates and certain amounts of alumina, alkali metal oxides and alkaline earth metal oxides.
The main mineral compositions of portland cement are: tricalcium silicate, dicalcium silicate, tricalcium aluminate and tetracalcium aluminoferrite, which have the advantages of quick setting and hardening, high early strength and later strength, better frost resistance and better wear resistance.
The soil stabilizer is a novel energy-saving and environment-friendly engineering material which is synthesized by various inorganic and organic materials and used for curing various soils. After the soil stabilizer is mixed with soil, the engineering property of the soil is changed through a series of physical and chemical reactions, a large amount of free water in the soil can be fixed in the form of crystal water, and the strength, compactness, resilience modulus, deflection value, shear strength and other properties of the soil treated by the soil stabilizer are greatly improved, so that the service life of a road is prolonged, and the maintenance cost of the engineering is saved.
The invention has the beneficial effects that: the beehive built by the composite material has the advantages of higher strength, rain and water resistance, good heat preservation and cold resistance, capability of improving the honey yield of bees and improving the production benefit of bee keepers.
The beehive built by the composite material takes clay as a main material, has low manufacturing cost and long service life, has good heat preservation, heat insulation and dehumidification performances, and is not easy to breed bacteria; the beehive is safe and firm, has the effect of preventing insects and ants, and can ensure healthy and vigorous growth of bee colonies, thereby improving the quality of original ecological honey.
Detailed Description
Example one
A composite material for building a beehive comprises the following raw materials in parts by weight: 2kg of closed-cell perlite, 1kg of vitrified micro bubbles, 60kg of clay, 10kg of Portland cement, 8kg of hydrated lime and 0.008kg of soil curing agent.
The process for building the beehive by using the composite material comprises the following steps:
(1) mixing and stirring the raw materials uniformly for later use;
(2) manufacturing a beehive plate mold, pouring a composite material for building the beehive into the beehive plate mold, demolding after the composite material is solidified, and laminating and maintaining to obtain the beehive plate;
(3) a beehive body with a containing cavity is built by using the beehive plate, and a movable frame is placed in the beehive body to obtain the beehive.
Example two
A composite material for building a beehive comprises the following raw materials in parts by weight: 2kg of closed-cell perlite, 1.5kg of vitrified micro bubbles, 60kg of clay, 12kg of Portland cement, 8kg of hydrated lime and 0.008kg of soil curing agent.
The process for building the beehive by using the composite material comprises the following steps:
(1) mixing and stirring the raw materials uniformly for later use;
(2) manufacturing a cuboid beehive plate mold with a containing cavity, wherein the length of the obtained beehive plate mold is 30cm, the width of the obtained beehive plate mold is 22cm, and the height of the obtained beehive plate mold is 3 cm; a rib is arranged in the beehive plate die and is vertically fixed in the accommodating cavity, and the length of the rib is 0.8cm greater than the height of the beehive plate die; the convex edges are fixed along the wide edges of the beehive plate die, two convex edges are fixed at each wide edge, the distance between each convex edge and the adjacent wide edge is 3cm, the wide edges are trisected by connecting lines between the two convex edges and the wide edges at the same wide edge, a composite material for building the beehive is poured into the beehive plate die, the composite material is demoulded after solidification, the surface of the solidified composite material is coated with a film, and the beehive plate with two holes at the wide edges is obtained after natural drying and maintenance for 12 days;
(3) enclose into a cuboid with four beehive panels (when reuse beehive panel encloses into the cuboid, the width of beehive panel is as the height of beehive body, the height of beehive panel is as the thickness of beehive body tank wall), pass the hole on the beehive panel with the iron wire and fix two adjacent beehive panels, reuse two beehive panels build a "people" font beehive lid at the top of cuboid, also can make the simple case lid of low ponding of being difficult for around high in the middle of the centre, the hole between case lid and the cuboid is spliced with the plank, then cover the combined material that the one deck built the beehive at the surface of beehive, form the airtight beehive body that has the cavity in, put into the movable frame in the beehive body, and set up the beehive door on the tank wall of beehive body, and set up the vent on the case lid, cover the vent, obtain the beehive.
EXAMPLE III
A composite material for building a beehive comprises the following raw materials in parts by weight: 2.5kg of closed-cell perlite, 1.5kg of vitrified micro bubbles, 70kg of clay, 15kg of Portland cement, 12kg of hydrated lime and 0.01kg of soil curing agent.
The process for building the beehive by using the composite material comprises the following steps:
(1) mixing and stirring the raw materials uniformly for later use;
(2) manufacturing a cuboid beehive plate mold with a containing cavity, wherein the length of the obtained beehive plate mold is 32cm, the width of the obtained beehive plate mold is 26cm, and the height of the obtained beehive plate mold is 4 cm; a rib is arranged in the beehive plate die and is vertically fixed in the accommodating cavity, and the length of the rib is 1.0cm greater than the height of the beehive plate die; the convex edges are fixed along the wide edges of the beehive plate die, two convex edges are fixed at each wide edge, the distance between each convex edge and the adjacent wide edge is 3.5cm, the wide edges are trisected by connecting lines between the two convex edges and the wide edges at the same wide edge, a composite material for building the beehive is poured into the beehive plate die, the composite material is demoulded after solidification, the surface of the solidified composite material is coated with a film, and the beehive plate with two holes at the wide edges is obtained after natural drying and maintenance for 15 days;
(3) enclose into a cuboid with four beehive panels (when reuse beehive panel encloses into the cuboid, the width of beehive panel is as the height of beehive body, the height of beehive panel is as the thickness of beehive body tank wall), pass the hole on the beehive panel with the iron wire and fix two adjacent beehive panels, two beehive panels of reuse build a "people" font beehive lid at the top of cuboid, the hole between case lid and the cuboid is spliced with the plank, then cover the combined material that the one deck built the beehive at the surface of beehive, form the airtight beehive body that has the cavity in, put into the movable frame in the beehive body, and set up the beehive door on the tank wall of beehive body, and set up the vent on the case lid, cover the vent lid on the vent, obtain the beehive.
Example four
A composite material for building a beehive comprises the following raw materials in parts by weight: 3kg of closed-cell perlite, 2kg of vitrified micro bubbles, 80kg of clay, 20kg of Portland cement, 15kg of hydrated lime and 0.012kg of soil curing agent.
The process for building the beehive by using the composite material comprises the following steps:
(1) mixing and stirring the raw materials uniformly for later use;
(2) manufacturing a cuboid beehive plate mold with a containing cavity, wherein the length of the obtained beehive plate mold is 35cm, the width of the obtained beehive plate mold is 28cm, and the height of the obtained beehive plate mold is 5 cm; a rib is arranged in the beehive plate die and is vertically fixed in the accommodating cavity, and the length of the rib is 1.2cm greater than the height of the beehive plate die; the convex edges are fixed along the wide edges of the beehive plate die, two convex edges are fixed at each wide edge, the distance between each convex edge and the adjacent wide edge is 4cm, the wide edges are trisected by connecting lines between the two convex edges and the wide edges at the same wide edge, a composite material for building the beehive is poured into the beehive plate die, the composite material is demoulded after solidification, the surface of the solidified composite material is coated with a film, and the beehive plate with two holes at the wide edges is obtained after natural drying and maintenance for 18 days;
(3) enclose into a cuboid with four beehive panels (when reuse beehive panel encloses into the cuboid, the width of beehive panel is as the height of beehive body, the height of beehive panel is as the thickness of beehive body tank wall), pass the hole on the beehive panel with the iron wire and fix two adjacent beehive panels, reuse two beehive panels build a "people" font beehive lid (or build a simple case lid that middle height is low all around) at the top of cuboid, the hole between case lid and the cuboid is spliced with the plank, then cover the combined material that the one deck built the beehive at the surface of beehive, form the airtight beehive body that has the cavity in, put into the movable frame in the beehive body, and set up the beehive door on the tank wall of beehive body, and set up the vent on the case lid, cover the vent lid on the vent, obtain the beehive.
The present invention is not limited to the above-described preferred embodiments, and various other forms of the product can be obtained by anyone who has come within the teachings of the present invention, but any variation in the details thereof, which is the same as or similar to the present application, falls within the scope of the present invention.
Claims (9)
1. The process for building the beehive by using the composite material is characterized in that the composite material is prepared from the following raw materials in parts by weight: 2-3 parts of closed-cell perlite, 1-2 parts of vitrified micro bubbles, 60-80 parts of clay, 10-20 parts of Portland cement, 8-15 parts of hydrated lime and 0.008-0.012 part of soil curing agent;
the process for building the beehive by using the composite material comprises the following steps:
(1) mixing and stirring the raw materials uniformly for later use;
(2) manufacturing a beehive plate mold, pouring a composite material for building the beehive into the beehive plate mold, demolding after the composite material is solidified, and laminating and maintaining to obtain the beehive plate;
(3) a beehive body with a containing cavity is built by using the beehive plate, and a movable frame is placed in the beehive body to obtain the beehive.
2. A process for building a beehive from the composite material according to claim 1, wherein the composite material is composed of the following raw materials in parts by weight: 2.5 parts of closed-cell perlite, 1.5 parts of vitrified micro bubbles, 70 parts of clay, 15 parts of Portland cement, 12 parts of hydrated lime and 0.01 part of soil curing agent.
3. The process for building the beehive by using the composite materials as claimed in claim 1, wherein in the step (2), the beehive plate mold is a cuboid with a containing cavity inside, and has a length of 30-35 cm, a width of 22-28 cm and a height of 3-5 cm; the beehive plate die is internally provided with a convex edge which is vertically fixed in the accommodating cavity, and the length of the convex edge is greater than the height of the beehive plate die.
4. A process for constructing a beehive from composite materials according to claim 3, wherein the length of the ribs is 0.8-1.2 cm greater than the height of the beehive slab mold.
5. The process of constructing a beehive of composite material according to claim 4, wherein the ribs are attached along the broad sides of the beehive plate mold, two ribs being attached to each broad side.
6. The process of constructing a beehive according to claim 5, wherein the ribs are spaced from their adjacent broadsides by a distance of 3-4 cm, and the two ribs on the same broadside have a line connecting them that bisects the broadside.
7. The process of constructing a beehive of composite material according to claim 6, wherein the resulting beehive sheet has two holes at both broad edges.
8. The process of building beehives with composite materials according to claim 1, wherein in the step (2), the film covering maintenance is: and coating a film on the surface of the solidified composite material, and naturally drying and curing for 12-18 days.
9. The process for building the beehive by using the composite materials according to the claim 1, wherein in the step (3), a cuboid is formed by surrounding four beehive plates, iron wires penetrate through holes in the beehive plates to fix the two adjacent beehive plates, then a herringbone beehive cover is built on the top of the cuboid by using the two beehive plates, holes between the beehive cover and the cuboid are spliced by using wood boards, then a layer of composite materials for building the beehive is covered on the outer surface of the beehive to form a closed beehive body with a cavity, a ventilation opening is formed in the beehive cover, and a cover is covered on the ventilation opening to ventilate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280093.0A CN109824332B (en) | 2019-04-09 | 2019-04-09 | Composite material for building beehive and process for building beehive by using composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280093.0A CN109824332B (en) | 2019-04-09 | 2019-04-09 | Composite material for building beehive and process for building beehive by using composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109824332A CN109824332A (en) | 2019-05-31 |
| CN109824332B true CN109824332B (en) | 2021-10-12 |
Family
ID=66874291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910280093.0A Active CN109824332B (en) | 2019-04-09 | 2019-04-09 | Composite material for building beehive and process for building beehive by using composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109824332B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3159508A1 (en) * | 2019-11-27 | 2021-06-03 | Richard John Pierre TUSCH | Modular housing structure for solitary bees |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204142A (en) * | 2006-12-18 | 2008-06-25 | 罗登光 | Producing method for movable-framed tsuchiana hive |
| CN101331856A (en) * | 2007-06-25 | 2008-12-31 | 赵锴禄 | Cement beehive and once-forming production method |
| CN105643767A (en) * | 2016-01-11 | 2016-06-08 | 吴承锋 | Manufacturing method for foam cement beehive |
| CN106719102A (en) * | 2016-12-09 | 2017-05-31 | 广西民族大学 | A kind of beekeeping case |
| CN106927742A (en) * | 2017-03-06 | 2017-07-07 | 安徽键合科技有限公司 | A kind of environmentally friendly soundproof construction composition and preparation method thereof |
| CN107540293A (en) * | 2017-09-19 | 2018-01-05 | 鲁东大学 | A kind of preparation method for being used to build the composite of beehive |
-
2019
- 2019-04-09 CN CN201910280093.0A patent/CN109824332B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204142A (en) * | 2006-12-18 | 2008-06-25 | 罗登光 | Producing method for movable-framed tsuchiana hive |
| CN101331856A (en) * | 2007-06-25 | 2008-12-31 | 赵锴禄 | Cement beehive and once-forming production method |
| CN105643767A (en) * | 2016-01-11 | 2016-06-08 | 吴承锋 | Manufacturing method for foam cement beehive |
| CN106719102A (en) * | 2016-12-09 | 2017-05-31 | 广西民族大学 | A kind of beekeeping case |
| CN106927742A (en) * | 2017-03-06 | 2017-07-07 | 安徽键合科技有限公司 | A kind of environmentally friendly soundproof construction composition and preparation method thereof |
| CN107540293A (en) * | 2017-09-19 | 2018-01-05 | 鲁东大学 | A kind of preparation method for being used to build the composite of beehive |
Non-Patent Citations (1)
| Title |
|---|
| 土坯蜂箱的制作;尹刚;《中国蜂业》;20111130;66-67 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109824332A (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115584813A (en) | Colored rammed earth wall and preparation method thereof | |
| CN110862247A (en) | Concrete for producing prefabricated member and preparation method thereof | |
| CN101560806B (en) | Light-weight energy-saving thermal insulating brick | |
| CN202090469U (en) | Multifunctional die wallboard structural system for fast house building | |
| CN109824332B (en) | Composite material for building beehive and process for building beehive by using composite material | |
| CN106677424A (en) | Light earthquake-resistant wallboard and production method thereof | |
| CN106703250B (en) | A kind of Assembled self-insulating wall and its just manual labour skill | |
| CN211714563U (en) | Low-cost, light, high-strength non-dismantling composite heat-insulating template | |
| CN113149578A (en) | Manufacturing process of heat-preservation and decoration integrated plate | |
| CN101775861B (en) | Cast in situs construction method for light heat-insulation integral wall of energy-saving construction house and light heat-insulation wall material | |
| CN102220796A (en) | Foam concrete building block with veneer and manufacturing method thereof | |
| CN111300588A (en) | Preparation method of archaized brick and special mould thereof | |
| CN108726967B (en) | Production process of PC (polycarbonate) component | |
| CN108018986A (en) | A kind of structure and half prefabricated Side fascia of energy saving integrated and its construction method | |
| CN109989497A (en) | A kind of ecological integrated assembled type wall body structure and house based on New Building Materials | |
| CN108894369A (en) | Half precast light white concrete curtain wall of one kind and its construction method | |
| CN207794427U (en) | A kind of Foamed Gypsum light chamber inside heat insulation wall body | |
| CN104563379B (en) | A kind of preparation method of EPS-foam cement composite self-insulation stalk building block | |
| CN206917090U (en) | A kind of dry-hang FRP Columns based on fiber colored stone concrete slab | |
| CN1019991C (en) | Light-weight wall board and making method thereof | |
| CN101805157B (en) | Intelligent temperature-controlled hidden-honeycomb concrete energy-saving building block | |
| CN202124954U (en) | Cement board | |
| CN205907834U (en) | Press from both sides difficult self preservation temperature plate that fires of core | |
| CN201148692Y (en) | Integral composite thermal insulation wallboard | |
| CN104802282B (en) | A kind of preparation method of foam cement composite plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |