CN103467813A - Artificial wood and preparation method thereof - Google Patents
Artificial wood and preparation method thereof Download PDFInfo
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- CN103467813A CN103467813A CN2013103603608A CN201310360360A CN103467813A CN 103467813 A CN103467813 A CN 103467813A CN 2013103603608 A CN2013103603608 A CN 2013103603608A CN 201310360360 A CN201310360360 A CN 201310360360A CN 103467813 A CN103467813 A CN 103467813A
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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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/02—Inorganic materials
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
Abstract
The invention provides artificial wood which is formed by mixing and extruding the following components in parts by mass: 60-80 parts of high-density polyethylene, 25-45 parts of linear low-density polyethylene, 3-7 parts of carbon fiber, 5-11 parts of glass fiber, 35-55 parts of crop straw, 30-45 parts of fire retardant, 1-2 parts of foaming agent, 1-2.5 parts of antistatic agent, 1.5-2.5 parts of antioxidant, 2-3.5 parts of masterbatch, 3-5 parts of lubricant and 3-5 parts of ultraviolet light absorber/ light stabilizer. The high-density polyethylene is low-pressure high-density polyethylene with the molecular weight of 200,000-400,000 and the density of 0.951-0.968 g/cm<3>. The molecular weight of the linear low-density polyethylene is 200,000-500,000, and the density of the linear low-density polyethylene is 0.941-0.965 g/cm<3>. The fire retardant is selected from one or both of nano-sized magnesium hydroxide and nano-sized aluminum hydroxide. The invention further provides a preparation method of the artificial wood, and the preparation method comprises the steps of mixing materials, extrusion molding for plastics, cooling and cutting. The artificial wood has the advantages of good performance, low cost and convenience in processing, and has a wide application prospect.
Description
Technical field
The present invention relates to new material technology field, relate more specifically to a kind of Emulational wood and preparation method thereof.
Background technology
Beginning along with the Industrial Revolution; energy consumption speed is more and more faster; make each state at present all ceaselessly strengthen and carry out the environmental improvement dynamics; guarantee that the concept of Sustainable development accepted by most people; improvement to environment increases the aspects such as green area, minimizing discharge nothing more than; for realizing this target of green coverage per capita; each department are all when ceaselessly strengthening the green coverage construction; also original green area is protected as protective belt, guaranteed at the earth of leaving in the future a green of descendants for.Thereby short-term time internal cause lacks the market chain reaction that the wood type starting material cause, the price of all kinds of solid wood furnitures, floor, office appliance grows steadily, the trend to high-end consumer's goods transition by the mass product of twentieth century.For this reason, use a kind of popular material to replace log material to become each producer and colleges and universities, the new direction of scientific research institutions' research and development, similar patent, technology is also appeared in the newspapers and is led repeatly, as Chinese patent: CN102617915A, a kind of anti-non-halogen flame-proof smoke-restraining wood plastic composite and preparation method thereof that goes mouldy, wherein announced a kind of preparation method of mildew-resistant variable resistance combustion imitated wood material, the fungicidal properties that the emphasis of its introduction is product and product mechanical property, the fire retardant smoke suppressing has mentioned, but can not meet the theory of modern safety fully, complete processing and process steps are also comparatively loaded down with trivial details, Chinese patent: CN102269164B and for example, a kind of micro-foaming polystyrene all-plastic wood-like material and preparation method thereof, wherein having disclosed a kind of making method and material that can substitute solid wood material forms, but the method for setting forth in patent is just carried out basic micro-foam process by starting material and is improved, and manufacturing process steps is more loaded down with trivial details, the characteristic of failing in patent must have the fire prevention that makes product, mildew-resistant etc. is disclosed.
Summary of the invention
For overcoming the problems referred to above of the prior art, the invention provides a kind of Emulational wood and preparation method thereof, this kind of timber cost is low, and performance is excellent and making method is easy, is suitable for industrialized production.
The technical solution used in the present invention is: a kind of Emulational wood, and its material by following quality component is through mixing, extrusion molding and form:
High density polyethylene(HDPE) 60-80 part,
Linear low density polyethylene 25-45 part,
Carbon fiber 3-7 part,
Glass fibre 5-11 part,
Agricultural crop straw 35-55 part,
Fire retardant 30-45 part,
Whipping agent 1-2 part,
Static inhibitor 1-2.5 part,
Oxidation inhibitor 1.5-2.5 part,
Masterbatch 2-3.5 part,
Opening agent 3-5 part,
UV light absorber/photostabilizer 3-5 part;
Wherein, high density polyethylene(HDPE) is that molecular weight is 20～400,000, and density is 0.951～0.968g/cm
3low-pressure high-density polyethylene;
Linear low density polyethylene is that molecular weight is 20～500,000, and density is 0.941～0.965g/cm
3linear low density polyethylene;
Fire retardant is selected from one or both the combination in nanometric magnesium hydroxide and aluminium hydroxide.
Preferably, carbon fiber is carbon nano fiber; The nano-grade glass fibre that glass fibre is alkali-free.
Further, agricultural crop straw is that granularity is 80～100 purpose stalk particles, and agricultural crop straw is selected from one or more the combination in corn, paddy rice or wheat stalk etc.Preferably use dry meticulous crushing straw.
Preferably, whipping agent is selected from the food grade plastic whipping agent.In the present invention, whipping agent is used " Ying Quan " product card series whipping agent, as reaches Vesicant-1 (writing a Chinese character in simplified form V-1), Vesicant-2 (writing a Chinese character in simplified form V-2), Vesicant-3 (writing a Chinese character in simplified form V-3) or the Vesicant-60 (writing a Chinese character in simplified form V-60) etc. of food grade safety requirements.
More preferably, static inhibitor is macromolecular composition static inhibitor E-308, and its fusing point is 180 ℃, and the temperature that can tolerate is 300 ℃, and outward appearance is white particle; Oxidation inhibitor is irgasfos 168, and its model is HG-168, and fusing point is 180 ℃, and outward appearance is white powder.
Further, Masterbatch is white, black, grey or blue Masterbatch.
Further, UV light absorber/photostabilizer is formulated by salicylate class, benzophenone class, benzotriazole category, group-substituted acrylonitrile, triazines and hindered amines.
Preferably, opening agent is fluorine containing silicone oil.
The present invention also provides the preparation method of above-mentioned Emulational wood on the other hand, comprises the following steps:
(a) choose the material of following quality component and be mixed to get compound: high density polyethylene(HDPE) 60-80 part, linear low density polyethylene 25-45 part, carbon fiber 3-7 part, glass fibre 5-11 part, agricultural crop straw 35-55 part, fire retardant 30-45 part, whipping agent 1-2 part, static inhibitor 1-2.5 part, oxidation inhibitor 1.5-2.5 part, Masterbatch 2-3.5 part, opening agent 3-5 part, UV light absorber/photostabilizer 3-5 part; High density polyethylene(HDPE) is that molecular weight is 20～400,000, the low-pressure high-density polyethylene that density is 0.951～0.968g/cm3; Linear low density polyethylene is that molecular weight is 20～500,000, and density is 0.941～0.965g/cm
3linear low density polyethylene; Fire retardant is selected from one or both the combination in nanometric magnesium hydroxide and aluminium hydroxide; Particularly, each material is introduced in mixer and mixed, and control rotating speed and the mixing time of mixer, obtain compound.
(b) resulting compound in step (a) is introduced after the forcing machine melting and clamp-oned in mould, obtain parison after cooling, obtain Emulational wood after the cutting as required.Particularly, compound is introduced to the twin screw extruder melting and be squeezed in mould, and it is cooling to enter tank under the traction of tractor, control the extrusion temperature of twin screw extruder and the pulling speed of tractor, obtain parison.
Wherein, in step (a), carbon fiber is carbon nano fiber; The nano-grade glass fibre that glass fibre is alkali-free; Agricultural crop straw is selected from one or more the combination in corn, paddy rice or wheat stalk; Whipping agent is selected from the food grade plastic whipping agent; Static inhibitor is macromolecular composition static inhibitor E-308; Oxidation inhibitor is oxidation inhibitor HG-168; Opening agent is fluorine containing silicone oil; UV light absorber/photostabilizer is formulated by salicylate class, benzophenone class, benzotriazole category, group-substituted acrylonitrile, triazines and hindered amines.
Preferably, in step (a), the rotating speed of mixer is 50～80n/min, and mixing time is 40～55min.
Preferably, in step (b), the temperature in forcing machine is 155～220 ℃, particularly, the extrusion temperature of twin screw extruder is set to: district 155-170 ℃， bis-district 155-175 ℃， tri-district 180-195 ℃, four district 190-200 ℃， five district 195-205 ℃ ，He six district 200-220 ℃.
The pulling speed of tractor is controlled as 6-9m/min.
More preferably, the cavity pressure of mould be-0.03～-0.05MPa.
In the present invention, each component for the preparation of Emulational wood all can obtain by commercial sources.
Compared with prior art, the present invention has following advantages: 1, without using nonferrous materials, thereby can economize on resources 2, simplified manufacturing process by the screw extrusion press moulding, and meet industrialized mass production and require 3, both be conducive to save the energy consumption while manufacturing, contribute to again to reduce equipment investment 4, raw material is easy to get and is cheap, reduced cost 5, after making section bar without carrying out surface treatment, and not there will be surface oxidation under the use state, go mouldy 6, the physicals excellence, there is good flame retardant properties and safety and environmental protection, can serve as interior decoration and outdoor scene building materials fully.
Embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated, thereby so that advantages and features of the invention are easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made and more removed clear and definite defining.
Embodiment 1
(1) material choice, take 70 parts of high density polyethylene(HDPE)s by weight, 35 parts of linear low density polyethylenes, 6 parts, carbon fiber, 9 parts, glass fibre, 45 parts of dry pulverizing stalks, 40 parts of fire retardants, 1.5 parts of whipping agents, 2 parts, static inhibitor, 2 parts, oxidation inhibitor, 3 parts of grey Masterbatchs, 4 parts of opening agents, 3 parts of UV light absorber/photostabilizers, obtain raw material.Wherein: the high density polyethylene(HDPE) molecular weight is 260,000 and is white semi-transparent circle shape particulate material; Linear low density polyethylene is molecular weight 20～500,000, density is 0.941～0.965g/cm
3the linear polyethylene that obtains of copolymerization; Carbon fiber is the carbon nano fiber powder, the nano-grade glass fibre that glass fibre is alkali-free: dry pulverizing stalk is that the straw powder of order number between 80-100 minces; Fire retardant is nano level and process silane surface treatment magnesium hydroxide; It is Vesicant1 food grade plastic whipping agent for the trade mark that " Ying Quan " produces that whipping agent adopts brand; Static inhibitor is for being the E-308 static inhibitor by the model of Science and Technology Ltd. of Chinese Guangdong province Dongguan City Fiat production and sales, and the fusing point of this static inhibitor is that 180 ℃ and the temperature that can tolerate are 300 ℃; It is the white powder oxidation inhibitor that HG-168 and fusing point are 180 ℃ that oxidation inhibitor preferred (but being not limited to) is used the model by the production and sales of Jiangsu Province, China Han Guang Industry Co.,Ltd, Masterbatch preferably adopts the grey Masterbatch of being produced by Pu Liwan Shanghai chemical industry company limited, and it is 150-FA type fluorine containing silicone oil that opening agent is preferred, but not limited to the trade mark used by the production and sales of Sanming City, Changshu City, Jiangsu Province, China novel material company limited; UV light absorber/photostabilizer is formulated by salicylate class, benzophenone class, benzotriazole category, group-substituted acrylonitrile, triazines and hindered amines, it can directly obtain by commercial sources, desirable UV light absorber/photostabilizer in the market mostly is this kind of Compositional type, such as, from the Chiguard of the strange titanium science and technology in Taiwan series UV light absorber etc.
(2) batch mixing, the raw material that will be obtained by step (1) is introduced in Horizontal type mixer and is mixed, and the rotating speed of Horizontal type mixer is controlled as 70n/min, and mixing time is 45min, obtains compound;
(3) extrusion forming, the compound that will be obtained by step (2) is introduced the screw extrusion press melting and is squeezed in mould, and it is cooling to enter tank under the traction of tractor, obtain parison, in this step, the extrusion temperature of twin screw extruder is: 165 ℃, 160 ℃， 2nd district, a district, three 195 ℃, districts, it is 220 ℃ that four He Wu district, districts are 200 ℃ of ，He 6th districts, and the cavity pressure of mould is-0.05MPa, the pulling speed of tractor is 7m/min, obtains parison;
(4) cutting, the parison that will be obtained by step (3) enters the length cutting of the cooled parison of tank by processing requirement, more particularly, for example, length or width by the framework of solar photovoltaic assembly cut into (for example) 3m or 5m, and obtaining color is white solar photovoltaic assembly frame material.
Similarly, respectively according to the method in embodiment 1, prepare the Emulational wood in following embodiment 2-5, difference in embodiment 2-5 and embodiment 1 is, the difference of selected raw material or its umber and processing parameter, specifically distinguish as following table 1 and table 2, what wherein the component of not dated especially design parameter or model adopted is the component of type in the same manner as in Example 1.
Each component list of the Emulational wood of table 1 embodiment 1-5
The preparation method's of the Emulational wood of table 2 embodiment 1-5 parameter list
The frame material of the solar photovoltaic assembly obtained by above-described embodiment 1 to 5 has the desirable physicals shown in following table 3 after tested.
The performance perameter list of the Emulational wood of table 3 embodiment 1-5
Therefore the prepared Emulational wood of the present invention has very excellent performance, and simple and convenient processing method, cost is lower, applicable to industrialized production, is with a wide range of applications.
Above specific embodiment of the present invention is illustrated; but protection content of the present invention is not only limited to above embodiment; under of the present invention, in technical field, the common knowledge of a GPRS just can be carried out diversified change in its technology main idea scope.
Claims (10)
1. an Emulational wood, is characterized in that, by the material of following quality component through mixing, extrusion molding and form:
High density polyethylene(HDPE) 60-80 part,
Linear low density polyethylene 25-45 part,
Carbon fiber 3-7 part,
Glass fibre 5-11 part,
Agricultural crop straw 35-55 part,
Fire retardant 30-45 part,
Whipping agent 1-2 part,
Static inhibitor 1-2.5 part,
Oxidation inhibitor 1.5-2.5 part,
Masterbatch 2-3.5 part,
Opening agent 3-5 part,
UV light absorber/photostabilizer 3-5 part;
Described high density polyethylene(HDPE) is that molecular weight is 20～400,000, and density is 0.951～0.968g/cm
3low-pressure high-density polyethylene;
Described linear low density polyethylene is that molecular weight is 20～500,000, and density is 0.941～0.965g/cm
3linear low density polyethylene;
Described fire retardant is selected from one or both the combination in nanometric magnesium hydroxide and aluminium hydroxide.
2. Emulational wood according to claim 1, it is characterized in that: described carbon fiber is carbon nano fiber; The nano-grade glass fibre that described glass fibre is alkali-free.
3. Emulational wood according to claim 1, it is characterized in that: described agricultural crop straw is that granularity is 80～100 purpose stalk particles, described agricultural crop straw is selected from one or more the combination in corn, paddy rice or wheat stalk.
4. Emulational wood according to claim 1, it is characterized in that: described whipping agent is selected from the food grade plastic whipping agent.
5. Emulational wood according to claim 1, it is characterized in that: described static inhibitor is macromolecular composition static inhibitor E-308; Described oxidation inhibitor is oxidation inhibitor HG-168.
6. Emulational wood according to claim 1, it is characterized in that: described UV light absorber/photostabilizer is formulated by salicylate class, benzophenone class, benzotriazole category, group-substituted acrylonitrile, triazines and hindered amines.
7. Emulational wood according to claim 1, it is characterized in that: described opening agent is fluorine containing silicone oil.
8. the preparation method of an Emulational wood as claimed in claim 1 is characterized in that: comprise the following steps:
(a) choose the material of following quality component and be mixed to get compound: high density polyethylene(HDPE) 60-80 part, linear low density polyethylene 25-45 part, carbon fiber 3-7 part, glass fibre 5-11 part, agricultural crop straw 35-55 part, fire retardant 30-45 part, whipping agent 1-2 part, static inhibitor 1-2.5 part, oxidation inhibitor 1.5-2.5 part, Masterbatch 2-3.5 part, opening agent 3-5 part, UV light absorber/photostabilizer 3-5 part; Described high density polyethylene(HDPE) is that molecular weight is 20～400,000, and density is 0.951～0.968g/cm
3low-pressure high-density polyethylene; Described linear low density polyethylene is that molecular weight is 20～500,000, and density is 0.941～0.965g/cm
3linear low density polyethylene; Described fire retardant is selected from one or both the combination in nanometric magnesium hydroxide and aluminium hydroxide;
(b) resulting compound in step (a) is introduced after the forcing machine melting and clamp-oned in mould, obtain parison after cooling, obtain Emulational wood after the cutting as required.
9. the preparation method of Emulational wood according to claim 8, it is characterized in that: in step (a), described carbon fiber is carbon nano fiber; The nano-grade glass fibre that described glass fibre is alkali-free; Described agricultural crop straw is selected from one or more the combination in corn, paddy rice or wheat stalk; Described whipping agent is selected from the food grade plastic whipping agent; Described static inhibitor is macromolecular composition static inhibitor E-308; Described oxidation inhibitor is oxidation inhibitor HG-168; Described opening agent is fluorine containing silicone oil: described UV light absorber/photostabilizer is formulated by salicylate class, benzophenone class, benzotriazole category, group-substituted acrylonitrile, triazines and hindered amines.
10. the preparation method of Emulational wood according to claim 8, it is characterized in that: in step (b), the temperature in described forcing machine is 155～220 ℃, the cavity pressure of described mould is-0.03～-0.05MPa.
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| CN103937123A (en) * | 2014-04-09 | 2014-07-23 | 苏州市相城区明达复合材料厂 | Carbon fiber pipeline composite material |
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| CN109320985A (en) * | 2018-08-15 | 2019-02-12 | 江苏福瑞森塑木科技股份有限公司 | Colorful wood plastic composite board modelled after an antique and preparation method thereof |
| CN113337025A (en) * | 2021-06-18 | 2021-09-03 | 江苏通全球工程管业有限公司 | Combined ecological modified plastic enclosing wall |
| CN113527781A (en) * | 2021-07-19 | 2021-10-22 | 安徽财纳伽善科技有限公司 | Nano-scale plant fiber for simulating leaves and capable of simulating moisture |
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Application publication date: 20131225 |