CN110938315A - Indoor antistatic wood-plastic composite wallboard with carbonized fibrilia raw material - Google Patents
Indoor antistatic wood-plastic composite wallboard with carbonized fibrilia raw material Download PDFInfo
- Publication number
- CN110938315A CN110938315A CN201911233388.9A CN201911233388A CN110938315A CN 110938315 A CN110938315 A CN 110938315A CN 201911233388 A CN201911233388 A CN 201911233388A CN 110938315 A CN110938315 A CN 110938315A
- Authority
- CN
- China
- Prior art keywords
- parts
- fibrilia
- carbonized
- plastic composite
- raw material
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Finishing Walls (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses an indoor antistatic wood-plastic composite wallboard with a carbonized fibrilia raw material, which comprises the following raw materials in parts by weight: 25-35 parts of polymer, 20-50 parts of plant fiber, 5-15 parts of artificial zeolite, 10-40 parts of fibrilia, 0.5-10 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive, wherein the fibrilia needs to be carbonized by a hydrothermal method; the indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material changes the prior manufacturing raw materials and raw material proportion, changes the manufacturing process, ensures that the manufactured wallboard has good conductivity, and can timely release the generated static electricity.
Description
Technical Field
The invention relates to the technical field of wallboards, in particular to an indoor antistatic wood-plastic composite wallboard with a carbonized fibrilia raw material.
Background
People rely on wood materials extremely, wood resources are cut down excessively, the existing wood resources are deficient gradually, ecological environment protection is more and more emphasized, the development of wood-plastic boards faces severe tests, wood-plastic boards come along with transportation, the wood-plastic boards are novel environment-friendly boards made of wood-plastic composite materials, the wood-plastic boards not only have the processing characteristics and wood texture of wood, but also have the water resistance, corrosion resistance and other characteristics of plastics, and based on the characteristics of green, fashionable, attractive and convenient decoration, the wood-plastic boards gradually enter the decoration of outdoor parks and houses; because the wood-plastic product is not used for a long time, no specific solution is provided in the prior art for the problem.
Disclosure of Invention
The invention aims to provide an indoor antistatic wood-plastic composite wallboard with a carbonized fibrilia raw material, which has the advantages of good conductivity and static resistance and solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an indoor antistatic wood-plastic composite wallboard with a carbonized fibrilia raw material comprises the following raw materials in parts by weight: 25-35 parts of polymer, 20-50 parts of plant fiber, 5-15 parts of artificial zeolite, 10-40 parts of fibrilia, 0.5-10 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive.
Further, the raw materials comprise the following materials in parts by weight: 30-35 parts of polyethylene, 40-50 parts of straw, 6-14 parts of artificial zeolite, 10-30 parts of fibrilia, 0.5-5 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive.
Further, the raw materials comprise the following materials in parts by weight: 32-35 parts of polypropylene, 40-50 parts of wood powder, 5-10 parts of artificial zeolite, 10-40 parts of fibrilia, 1-5 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive.
Further, the raw materials comprise the following materials in parts by weight: 25-35 parts of polyvinyl chloride, 35-50 parts of rice husks, 5-15 parts of artificial zeolite, 10-40 parts of fibrilia, 2-10 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive.
Further, the preparation method of the indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material comprises the following steps:
1) powdering the polymer;
2) carbonizing the fibrilia;
3) stirring: uniformly stirring the powdery polymer, the plant fiber, the artificial zeolite, the carbonized fibrilia, the alkyl quaternary ammonium salt, the compatilizer, the antioxidant and the mildew preventive;
4) drying the raw materials;
5) extruding and exhausting;
6) compression molding;
7) and (6) cooling and shaping.
Furthermore, the fibrilia carbonization method is hydrothermal carbonization.
Further, the hydrothermal method refers to a method for preparing a material by dissolving and recrystallizing powder in a sealed pressure vessel using water as a solvent.
Further, the hydrothermal carbonization method of the fibrilia comprises the following specific operation steps:
1) shearing the waste fibrilia textile fabric into 50-80 g of fragments, weighing 5-9 fragments in a beaker, respectively adding 50-100 ml of deionized water, and respectively adding a magnetic rotor to uniformly disperse the waste fibrilia textile fabric into fibrilia;
2) then placing the mixture into a 100ml hydrothermal reaction kettle;
3) sealing the hydrothermal reaction kettle, putting the sealed hydrothermal reaction kettle into a muffle furnace, keeping the temperature constant for 3-6 hours at a certain temperature, and naturally cooling the sealed hydrothermal reaction kettle to room temperature in the muffle furnace;
4) and separating the substances on the lower layer in the hydrothermal reaction kettle into a centrifugal tube, placing 30-50 ml of absolute ethyl alcohol into the centrifugal tube, placing the centrifugal tube into a centrifuge, treating for 5min, and taking out.
Further, the temperature of the hydrothermal reaction kettle is 180-280 ℃.
Compared with the prior art, the invention has the following beneficial effects: the indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material changes the prior manufacturing raw materials and raw material proportion, changes the manufacturing process, ensures that the manufactured wallboard has good conductivity, and can timely release the generated static electricity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Embodiment 1, an indoor antistatic wood-plastic composite wallboard with a carbonized fibrilia raw material comprises the following raw materials in parts by weight: 30 parts of polyethylene, 40 parts of straws, 9.43 parts of artificial zeolite, 10 parts of fibrilia, 5 parts of alkyl quaternary ammonium salt, 5 parts of compatilizer, 0.45 part of antioxidant and 0.12 part of mildew preventive.
The preparation method of the carbonized fibrilia by a hydrothermal method comprises the following steps:
1) shearing the waste fibrilia textile fabric into 50-80 g of fragments, weighing 5-9 fragments in a beaker, respectively adding 50-100 ml of deionized water, and respectively adding a magnetic rotor to uniformly disperse the waste fibrilia textile fabric into fibrilia;
2) then placing the mixture into a 100ml hydrothermal reaction kettle;
3) sealing the hydrothermal reaction kettle, putting the sealed hydrothermal reaction kettle into a muffle furnace, keeping the temperature constant at 250 ℃ for 5 hours, and naturally cooling the sealed hydrothermal reaction kettle to room temperature in the muffle furnace;
4) and separating the substances at the lower layer in the hydrothermal reaction kettle into a centrifugal tube, putting 50ml of absolute ethyl alcohol into the centrifugal tube, putting the centrifugal tube into a centrifuge, treating for 5min, and taking out.
Then preparing the indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material, and comprising the following steps:
1) powdering polyethylene;
2) carbonizing the fibrilia;
3) stirring: uniformly stirring powdered polyethylene, straws, artificial zeolite, carbonized fibrilia, alkyl quaternary ammonium salt, a compatilizer, an antioxidant and a mildew preventive;
4) drying the raw materials;
5) extruding and exhausting;
6) compression molding;
7) and (6) cooling and shaping.
Embodiment 2, an indoor antistatic wood-plastic composite wallboard with a carbonized fibrilia raw material, the raw material comprises the following materials in parts by weight: the raw materials comprise the following materials in parts by weight: 35 parts of polypropylene, 40 parts of wood powder, 8.48 parts of artificial zeolite, 10 parts of fibrilia, 1 part of alkyl quaternary ammonium salt, 5 parts of compatilizer, 0.4 part of antioxidant and 0.12 part of mildew preventive.
The preparation method of the carbonized fibrilia by a hydrothermal method comprises the following steps:
1) shearing the waste fibrilia textile fabric into 50-80 g of fragments, weighing 5-9 fragments in a beaker, respectively adding 50-100 ml of deionized water, and respectively adding a magnetic rotor to uniformly disperse the waste fibrilia textile fabric into fibrilia;
2) then placing the mixture into a 100ml hydrothermal reaction kettle;
3) sealing the hydrothermal reaction kettle, putting the sealed hydrothermal reaction kettle into a muffle furnace, keeping the temperature constant at 200 ℃ for 8 hours, and naturally cooling the sealed hydrothermal reaction kettle to room temperature in the muffle furnace;
4) and separating the substances at the lower layer in the hydrothermal reaction kettle into a centrifugal tube, putting 40ml of absolute ethyl alcohol into the centrifugal tube, putting the centrifugal tube into a centrifuge, treating for 5min, and taking out.
Then preparing the indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material, and comprising the following steps:
1) pulverizing polypropylene into powder;
2) carbonizing the fibrilia;
3) stirring: uniformly stirring powdered polypropylene, wood powder, artificial zeolite, carbonized fibrilia, alkyl quaternary ammonium salt, a compatilizer, an antioxidant and a mildew preventive;
4) drying the raw materials;
5) extruding and exhausting;
6) compression molding;
7) and (6) cooling and shaping.
Embodiment 3, an indoor antistatic wood-plastic composite wallboard with a carbonized fibrilia raw material, the raw material comprises the following materials in parts by weight: the raw materials comprise the following materials in parts by weight: 30 parts of polyvinyl chloride, 35 parts of rice husk, 9.48 parts of artificial zeolite, 10 parts of fibrilia, 10 parts of alkyl quaternary ammonium salt, 5 parts of compatilizer, 0.4 part of antioxidant and 0.12 part of mildew preventive.
The preparation method of the carbonized fibrilia by a hydrothermal method comprises the following steps:
1) shearing the waste fibrilia textile fabric into 50-80 g of fragments, weighing 5-9 fragments in a beaker, respectively adding 50-100 ml of deionized water, and respectively adding a magnetic rotor to uniformly disperse the waste fibrilia textile fabric into fibrilia;
2) then placing the mixture into a 100ml hydrothermal reaction kettle;
3) sealing the hydrothermal reaction kettle, putting the sealed hydrothermal reaction kettle into a muffle furnace, keeping the temperature constant at 220 ℃ for 6 hours, and naturally cooling the sealed hydrothermal reaction kettle to room temperature in the muffle furnace;
4) and separating the substances at the lower layer in the hydrothermal reaction kettle into a centrifugal tube, putting 50ml of absolute ethyl alcohol into the centrifugal tube, putting the centrifugal tube into a centrifuge, treating for 5min, and taking out.
Then preparing the indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material, and comprising the following steps:
1) stirring: uniformly stirring powdery polyvinyl chloride, rice hulls, artificial zeolite, carbonized fibrilia, alkyl quaternary ammonium salt, a compatilizer, an antioxidant and a mildew preventive;
2) drying the raw materials;
3) extruding and exhausting;
4) compression molding;
5) and (6) cooling and shaping.
And (3) performance detection: in order to better illustrate the invention, the performance of the wood-plastic composite wallboard obtained in each example is tested, the surface resistivity of the product is tested by adopting a standard test method in the industry, meanwhile, comparison is carried out by combining with a comparative example, the comparative example 1 is a common wood-plastic composite wallboard on the market, and the test result is shown in table 1.
TABLE 1 comparison of test results for examples 1-3 and comparative examples
| Serial number | Surface resistivity (omega) |
| Example 1 | 3.8×104 |
| Example 2 | 8.3×108 |
| Example 3 | 9.4×103 |
| Comparative example 1 | 6.5×1014 |
Claims (9)
1. The utility model provides an indoor antistatic wood-plastic composite wallboard with carbonization flaxen fiber raw materials which characterized in that: the raw materials of the material comprise the following materials in parts by weight: 25-35 parts of polymer, 20-50 parts of plant fiber, 5-15 parts of artificial zeolite, 10-40 parts of fibrilia, 0.5-10 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive; wherein the fibrilia needs to be carbonized by a hydrothermal method.
2. The indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material as claimed in claim 1, is characterized in that: the raw materials comprise the following materials in parts by weight: 30-35 parts of polyethylene, 40-50 parts of straw, 6-14 parts of artificial zeolite, 10-30 parts of fibrilia, 0.5-5 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive.
3. The indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material as claimed in claim 1, is characterized in that: the raw materials comprise the following materials in parts by weight: 32-35 parts of polypropylene, 40-50 parts of wood powder, 5-10 parts of artificial zeolite, 10-40 parts of fibrilia, 1-5 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive.
4. The indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material as claimed in claim 1, is characterized in that: the raw materials comprise the following materials in parts by weight: 25-35 parts of polyvinyl chloride, 35-50 parts of rice husks, 5-15 parts of artificial zeolite, 10-40 parts of fibrilia, 2-10 parts of alkyl quaternary ammonium salt, 5-12 parts of compatilizer, 0.4-0.45 part of antioxidant and 0.12-0.13 part of mildew preventive.
5. The preparation method of the indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material according to claim 1 comprises the following steps:
1) powdering the polymer;
2) carbonizing the fibrilia;
3) stirring: uniformly stirring the powdery polymer, the plant fiber, the artificial zeolite, the carbonized fibrilia, the alkyl quaternary ammonium salt, the compatilizer, the antioxidant and the mildew preventive;
4) drying the raw materials;
5) extruding and exhausting;
6) compression molding;
7) and (6) cooling and shaping.
6. The indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material as claimed in claim 1 or 5, wherein: the fibrilia carbonization method is hydrothermal carbonization.
7. The indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material as claimed in claim 6, wherein: the hydrothermal method is a method for preparing a material by dissolving and recrystallizing powder in a sealed pressure container by using water as a solvent.
8. The indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material as claimed in claim 6, wherein: the specific operation steps of the hydrothermal method for carbonizing the fibrilia are as follows:
1) shearing the waste fibrilia textile fabric into 50-80 g of fragments, weighing 5-9 fragments in a beaker, respectively adding 50-100 ml of deionized water, and respectively adding a magnetic rotor to uniformly disperse the waste fibrilia textile fabric into fibrilia;
2) then placing the mixture into a 100ml hydrothermal reaction kettle;
3) sealing the hydrothermal reaction kettle, putting the sealed hydrothermal reaction kettle into a muffle furnace, keeping the temperature constant for 3-6 hours at a certain temperature, and naturally cooling the sealed hydrothermal reaction kettle to room temperature in the muffle furnace;
4) and separating the substances on the lower layer in the hydrothermal reaction kettle into a centrifugal tube, placing 30-50 ml of absolute ethyl alcohol into the centrifugal tube, placing the centrifugal tube into a centrifuge, treating for 5min, and taking out.
9. The indoor antistatic wood-plastic composite wallboard with the carbonized fibrilia raw material as claimed in claim 8, wherein: the temperature of the hydrothermal reaction kettle is 180-280 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233388.9A CN110938315A (en) | 2019-12-05 | 2019-12-05 | Indoor antistatic wood-plastic composite wallboard with carbonized fibrilia raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911233388.9A CN110938315A (en) | 2019-12-05 | 2019-12-05 | Indoor antistatic wood-plastic composite wallboard with carbonized fibrilia raw material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110938315A true CN110938315A (en) | 2020-03-31 |
Family
ID=69908879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911233388.9A Withdrawn CN110938315A (en) | 2019-12-05 | 2019-12-05 | Indoor antistatic wood-plastic composite wallboard with carbonized fibrilia raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110938315A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332677A (en) * | 2013-07-12 | 2013-10-02 | 天津工业大学 | Method for preparing biomass carbon-based composite energy storage material by utilizing plant fiber |
| CN104308947A (en) * | 2014-10-31 | 2015-01-28 | 孔德玲 | Formula of carbonized solid-wood high-density fiber composite board and producing and recycling process |
| CN104927241A (en) * | 2015-06-24 | 2015-09-23 | 潘秀娟 | Mold-proof antibacterial wood-plastic material |
| CN105733129A (en) * | 2016-03-06 | 2016-07-06 | 合肥云峰信息科技有限公司 | Modified wood-plastic composite with carbonized plant fibers and preparation method thereof |
| CN107083077A (en) * | 2017-04-28 | 2017-08-22 | 云南中乾集成房屋有限公司 | A kind of manufacture method of the enhanced wood plastic composite of weather resistance |
| KR101871278B1 (en) * | 2017-09-22 | 2018-06-27 | 주식회사 본우드 | Wood plastic composite and manufacturing method thereof |
| CN109721880A (en) * | 2018-11-22 | 2019-05-07 | 广东省微生物研究所（广东省微生物分析检测中心） | A kind of mould proof corrosion resistant wood plastic composite and preparation method thereof |
-
2019
- 2019-12-05 CN CN201911233388.9A patent/CN110938315A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332677A (en) * | 2013-07-12 | 2013-10-02 | 天津工业大学 | Method for preparing biomass carbon-based composite energy storage material by utilizing plant fiber |
| CN104308947A (en) * | 2014-10-31 | 2015-01-28 | 孔德玲 | Formula of carbonized solid-wood high-density fiber composite board and producing and recycling process |
| CN104927241A (en) * | 2015-06-24 | 2015-09-23 | 潘秀娟 | Mold-proof antibacterial wood-plastic material |
| CN105733129A (en) * | 2016-03-06 | 2016-07-06 | 合肥云峰信息科技有限公司 | Modified wood-plastic composite with carbonized plant fibers and preparation method thereof |
| CN107083077A (en) * | 2017-04-28 | 2017-08-22 | 云南中乾集成房屋有限公司 | A kind of manufacture method of the enhanced wood plastic composite of weather resistance |
| KR101871278B1 (en) * | 2017-09-22 | 2018-06-27 | 주식회사 본우드 | Wood plastic composite and manufacturing method thereof |
| CN109721880A (en) * | 2018-11-22 | 2019-05-07 | 广东省微生物研究所（广东省微生物分析检测中心） | A kind of mould proof corrosion resistant wood plastic composite and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 乔英杰: "《材料合成与制备》", 30 April 2010, 国防工业出版社 * |
| 王如竹等: "《太阳能制冷》", 31 January 2007, 化学工业出版社 * |
| 西鹏等: "《高技术纤维》", 30 September 2004, 化学工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104725705B (en) | A kind of preparation method of Polyethylene wood plastic composite material | |
| CN103992590B (en) | A kind of waste or used plastics resource regeneration produces formula of Wood-plastic material and preparation method thereof | |
| CN109971097B (en) | Green environment-friendly bamboo-wood fiber integrated board and manufacturing method thereof | |
| CN102433077A (en) | Ethylene vinyl acetate (EVA) adhesive film for solar cell and preparation method thereof | |
| CN108822440A (en) | A kind of flame-retardant wood-plastic plate and preparation method thereof | |
| CN102295433B (en) | Kieselguhr composite decoration plate and production process thereof | |
| CN108690295A (en) | A kind of environment-friendly PVC wood plastic composite | |
| CN110938315A (en) | Indoor antistatic wood-plastic composite wallboard with carbonized fibrilia raw material | |
| CN104448772B (en) | A kind of composite for household appliance shell | |
| CN109532154A (en) | A kind of fire-retardant co-extrusion Wood-plastic profiles | |
| CN108822442A (en) | A kind of environment-protection nano PVC wood plastic composite material | |
| CN103992592B (en) | Secondary stock Wood-plastic material and preparation method thereof | |
| CN103756344A (en) | Novel framework material for vegetable greenhouse and preparation method thereof | |
| CN104004293A (en) | Formula and preparation method of outdoor PVC wood plastic grille | |
| CN104804451B (en) | Light wood-plastic compound material for outdoor use | |
| CN113024946A (en) | High-heat-seal-strength PP (polypropylene) modified material for film blowing and preparation method thereof | |
| CN106633514A (en) | PVC pinch plate with resistance to ultraviolet aging | |
| CN107141832B (en) | environment-friendly flowerpot jointly prepared from multiple biomasses and production method thereof | |
| CN105542664A (en) | Novel bonding agent for straw artificial board and production method of novel bonding agent | |
| CN108912709A (en) | A kind of polyethylene/Eucalyptus powder composite material and preparation method thereof | |
| CN110256754A (en) | A kind of cold-resistant cracking resistance cable material and preparation method thereof | |
| CN111154434A (en) | Preparation method of adhesive for waterproof and mildewproof wooden products | |
| CN115109351B (en) | Wood powder filled PVC composite material for picture frame and preparation method thereof | |
| CN103756343A (en) | Novel framework material for vegetable greenhouse and preparation method thereof | |
| CN116554614A (en) | Preparation method of flame-retardant heat-insulating PVC/rice hull ash-based aerogel composite board |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200331 |