CN113087987A - Modified rice hull powder/polyethylene wood-plastic composite material and preparation method thereof - Google Patents
Modified rice hull powder/polyethylene wood-plastic composite material and preparation method thereof Download PDFInfo
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- CN113087987A CN113087987A CN202010019535.9A CN202010019535A CN113087987A CN 113087987 A CN113087987 A CN 113087987A CN 202010019535 A CN202010019535 A CN 202010019535A CN 113087987 A CN113087987 A CN 113087987A
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- rice hull
- hull powder
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- composite material
- plastic composite
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- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 64
- 239000000843 powder Substances 0.000 title claims abstract description 64
- 235000009566 rice Nutrition 0.000 title claims abstract description 64
- 239000000463 material Substances 0.000 title claims abstract description 51
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 37
- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 31
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 31
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 63
- 239000003607 modifier Substances 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims abstract description 9
- 238000005303 weighing Methods 0.000 claims abstract description 5
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical group CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 5
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 5
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 3
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000010903 husk Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 abstract description 9
- 239000004033 plastic Substances 0.000 abstract description 9
- 229920001684 low density polyethylene Polymers 0.000 abstract description 6
- 239000004702 low-density polyethylene Substances 0.000 abstract description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005054 agglomeration Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 4
- -1 polyethylene Polymers 0.000 abstract description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 150000008064 anhydrides Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010096 film blowing Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
-
- 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
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a modified rice hull powder/polyethylene wood-plastic composite material and a preparation method thereof, wherein the preparation method comprises the following steps: weighing 25-35 parts of rice hull powder, 2-6 parts of modifier, 2-4 parts of lubricant, 0.08-1 part of antioxidant and 65-75 parts of LDPE according to parts by weight; heating and mixing the weighed rice hull powder with the fineness of 600-800 meshes with a modifier to obtain modified rice hull powder; heating and mixing the PE, the lubricant and the antioxidant which are weighed; and extruding, drawing and granulating the obtained mixed material to obtain the modified rice hull powder/polyethylene wood-plastic composite material. According to the invention, the maleic anhydride grafted polyethylene wax is used for modifying the rice hull powder, so that the compatibility of the rice hull powder in polyethylene is improved, the rice hull powder is dispersed more uniformly, and the agglomeration phenomenon of the rice hull powder is reduced, thereby improving the overall performance of the wood-plastic material.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to a modified rice hull powder/polyethylene wood-plastic composite material and a preparation method thereof.
Background
The wood-plastic composite (WPC) is a composite formed by adding special functional additives into plant fibers and thermoplastic plastics and then carrying out melt compounding processing, has the advantages of wood and plastics and has excellent comprehensive performance. As new materials that can replace wood and plastic, products thereof have been increasingly applied to commercial products such as door and window profiles, fences, park benches, automobile interior trim panels, and the like.
The wood-plastic composite material mainly adopts a large amount of wasted sawdust, straws and the like and plastics as raw materials, so that the plastic materials are fully and effectively utilized, and the use of original materials (such as plastics and wood) is further saved by products made of the wood-plastic composite material. At present, the limit for further expanding the application range of the wood-plastic composite material is that the compatibility between the plant fiber and the polymer is poor due to the polarity and the hydrophilicity of the plant fiber, so that the biomass powder in an extrusion product can generate an agglomeration effect to generate a stress defect, and the mechanical property of the final wood-plastic composite material is poor.
Disclosure of Invention
Aiming at the problems, the invention researches and designs a modified rice hull powder/polyethylene wood-plastic composite material and a preparation method thereof to solve the defects that the rice hull powder is not uniformly dispersed and is easy to agglomerate when the rice hull powder is used for manufacturing the wood-plastic composite material. The technical means adopted by the invention are as follows:
a modified rice hull powder/polyethylene wood-plastic composite material comprises the following components in parts by weight: 25-35 parts of rice hull powder, 2-6 parts of modifier, 65-75 parts of PE, 2-4 parts of lubricant and 0.08-1 part of antioxidant.
Preferably, the modifier is maleic anhydride grafted polyethylene wax, and the grafting rate is 2% or 8%.
Preferably, the lubricant is oleamide or erucamide.
Preferably, the antioxidant is 1010.
Preferably, the fineness of the rice hull powder is 600-800 meshes.
A preparation method of the modified rice hull powder/polyethylene wood-plastic composite material based on any one of the above comprises the following steps:
s1, weighing 25-35 parts of rice hull powder, 4-6 parts of modifier, 2-4 parts of lubricant, 0.08-1 part of antioxidant and 65-75 parts of PE according to parts by weight;
s2, heating and mixing the rice hull powder weighed in the step S1 and a modifier to obtain modified rice hull powder;
s3, heating and mixing the obtained modified rice hull powder with the PE, the lubricant and the antioxidant weighed in the step S1 at the heating temperature of 110-140 ℃ to obtain a mixed material;
s4, extruding, drawing and granulating the mixed material obtained in the step S3 to obtain the wood-plastic composite material.
Compared with the prior art, the modified rice hull powder/polyethylene wood-plastic composite material and the preparation method thereof have the following beneficial effects:
1. the rice hulls which are agricultural waste are recycled, so that the process is simple, the cost is low, and the environment is protected;
2. the maleic anhydride grafted polyethylene wax is used for modifying the rice hull powder, so that the compatibility of the rice hull powder in polyethylene is improved, the rice hull powder is dispersed more uniformly, the agglomeration phenomenon of the rice hull powder is reduced, and the overall performance of the wood-plastic material is improved;
3. the prepared composite material can be used for preparing films to replace the original plastic films which are difficult to degrade in the market, and has good environmental protection.
Detailed Description
A modified rice hull powder/polyethylene wood-plastic composite material comprises the following components in parts by weight: 25-35 parts of rice hull powder, 2-6 parts of modifier, 65-75 parts of PE, 2-4 parts of lubricant and 0.08-1 part of antioxidant.
Further, the modifier is maleic anhydride grafted polyethylene wax, and the grafting rate is 2% or 8%; the antioxidant is 1010, and the chemical name of the antioxidant is tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester; the lubricant is oleamide or erucamide; the polyethylene PE can be low-density polyethylene LDPE of a film blowing grade; the fineness of the rice hull powder is 600-800 meshes.
A preparation method of the modified rice hull powder/polyethylene wood-plastic composite material comprises the following steps:
s1, weighing 25-35 parts of rice hull powder, 4-6 parts of modifier, 2-4 parts of lubricant, 0.08-1 part of antioxidant and 65-75 parts of PE according to parts by weight;
s2, heating and mixing the rice hull powder weighed in the step S1 and a modifier to obtain modified rice hull powder;
s3, heating and mixing the obtained modified rice hull powder with the PE, the lubricant and the antioxidant weighed in the step S1 at the heating temperature of 110-140 ℃ to obtain a mixed material;
and S4, extruding the mixed material obtained in the step S3 by using a double-screw extruder, drawing wires, granulating, discharging and preparing the wood-plastic composite material.
In step S4, the diameter of the screw of the twin-screw extruder is 75mm, the length-diameter ratio is 45:1, and the temperature of the extruder is set as follows: the first zone 110-.
The properties of the modified rice husk powder/polyethylene wood-plastic composite material produced are illustrated by the following different examples. Wherein, the higher the tensile strength is, the higher the hardness of the material is, and the poorer the toughness is; the larger the elongation at break represents the better the softness and elasticity of the material; the higher the impact strength is, the better the toughness of the material is; the larger the melt index, the better the processing fluidity of the material.
Example 1:
crushing the rice hull powder to 800 meshes by a flour mill, and drying until the water content reaches about 2%; weighing 30 parts by weight of dried rice hull powder, 3 parts by weight of a modifier (maleic anhydride grafted polyethylene wax, the grafting rate is 8%), 3 parts by weight of oleamide, 0.08 part by weight of antioxidant 1010 and 60 parts by weight of blown film LDPE; adding rice hull powder into a high-speed mixer, heating to 70 ℃, adding the weighed modifier, mixing for 3 minutes, adding the weighed oleamide, continuously mixing at high speed, adding the weighed antioxidant 1010, mixing at high speed for 2 minutes, adding the weighed LDPE, mixing at high speed for 10 minutes, and discharging; and extruding the obtained mixture by using a double-screw extruder, drawing wires, discharging materials, and preparing the modified rice hull powder/polyethylene wood-plastic composite material.
The diameter of a screw of the double-screw extruder is 75mm, the length-diameter ratio is 45:1, and the temperature of the extruder is set as follows in sequence: the first zone is 110 ℃, the second zone is 115 ℃, the third zone is 120 ℃, the fourth zone is 125 ℃, the fifth zone is 130 ℃, the sixth zone is 135 ℃, the seventh zone is 140 ℃, the eighth zone is 140 ℃, the ninth zone is 140 ℃, the tenth zone is 140 ℃ and the head temperature is 140 ℃.
The obtained modified rice hull powder/polyethylene wood-plastic composite material is subjected to performance detection according to corresponding standards, and the results are shown in table 1.
Example 2:
the difference from example 1 is that the grafting ratio of the maleic anhydride grafted polyethylene wax modifier in the raw material was 2%.
TABLE 1
It can be seen from table 1 that the higher the graft amount in the modifier, the greater the tensile strength, elongation at break, impact strength and melt index of the material, i.e. the better the toughness of the material, the greater the strength.
The invention provides a method for preparing a wood-plastic composite material by using maleic anhydride grafted polyethylene wax modified rice hull powder and the modified rice hull powder and PE. After maleic anhydride grafted polyethylene wax is used for modifying the rice hull powder, an anhydride group in the modifying agent is combined with a phenolic hydroxyl group on the surface of the rice hull powder, so that the polarity and the water absorption of cellulose in the rice hull powder are reduced, and the compatibility of the rice hull powder in PE is improved; therefore, the binding force between the rice hull powder and the PE interface is improved, the rice hull powder is dispersed more uniformly, the agglomeration phenomenon of the rice hull powder is reduced, the overall performance of the wood-plastic material is improved, and the wood-plastic material has degradability. The composite material prepared from blown film LDPE can be used for preparing films due to extremely high biomass base fineness, replaces the original plastic films which are difficult to degrade in the market, is green and environment-friendly, and has wide application prospect and wide market.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (6)
1. A modified rice hull powder/polyethylene wood-plastic composite material is characterized in that: the paint comprises the following components in parts by weight: 25-35 parts of rice hull powder, 2-6 parts of modifier, 65-75 parts of PE, 2-4 parts of lubricant and 0.08-1 part of antioxidant.
2. The modified rice hull powder/polyethylene wood-plastic composite material according to claim 1, characterized in that: the modifier is maleic anhydride grafted polyethylene wax, and the grafting rate is 2% or 8%.
3. The modified rice hull powder/polyethylene wood-plastic composite material according to claim 1, characterized in that: the lubricant is oleamide or erucamide.
4. The modified rice hull powder/polyethylene wood-plastic composite material according to claim 1, characterized in that: the antioxidant is 1010.
5. The modified rice hull powder/polyethylene wood-plastic composite material according to claim 1, characterized in that: the fineness of the rice hull powder is 600-800 meshes.
6. A preparation method of the modified rice husk powder/polyethylene wood-plastic composite material based on any one of claims 1-5 is characterized in that: the method comprises the following steps:
s1, weighing 25-35 parts of rice hull powder, 4-6 parts of modifier, 2-4 parts of lubricant, 0.08-1 part of antioxidant and 65-75 parts of PE according to parts by weight;
s2, heating and mixing the rice hull powder weighed in the step S1 and a modifier to obtain modified rice hull powder;
s3, heating and mixing the obtained modified rice hull powder with the PE, the lubricant and the antioxidant weighed in the step S1 at the heating temperature of 110-140 ℃ to obtain a mixed material;
s4, extruding, drawing and granulating the mixed material obtained in the step S3 to obtain the wood-plastic composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019535.9A CN113087987A (en) | 2020-01-08 | 2020-01-08 | Modified rice hull powder/polyethylene wood-plastic composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019535.9A CN113087987A (en) | 2020-01-08 | 2020-01-08 | Modified rice hull powder/polyethylene wood-plastic composite material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113087987A true CN113087987A (en) | 2021-07-09 |
Family
ID=76663436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010019535.9A Pending CN113087987A (en) | 2020-01-08 | 2020-01-08 | Modified rice hull powder/polyethylene wood-plastic composite material and preparation method thereof |
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| Country | Link |
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| CN (1) | CN113087987A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114874527A (en) * | 2022-05-19 | 2022-08-09 | 合肥略邦信息技术有限公司 | Bio-based controllable degradable mulching film and production method thereof |
-
2020
- 2020-01-08 CN CN202010019535.9A patent/CN113087987A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 李伟浩 等: "高性能PE基木塑复合材料的制备及研究", no. 11, pages 1 - 3 * |
| 杨忠久: "《硬质塑木复合低发泡产品生产技术和基础知识》", vol. 1, 江西科学技术出版社, pages: 60 * |
| 蔡智敏;: "聚乙烯蜡在塑料加工中的应用", no. 01, pages 86 - 94 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114874527A (en) * | 2022-05-19 | 2022-08-09 | 合肥略邦信息技术有限公司 | Bio-based controllable degradable mulching film and production method thereof |
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Application publication date: 20210709 |