CN113087988A - Vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and preparation method thereof - Google Patents
Vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and preparation method thereof Download PDFInfo
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- CN113087988A CN113087988A CN202010019539.7A CN202010019539A CN113087988A CN 113087988 A CN113087988 A CN 113087988A CN 202010019539 A CN202010019539 A CN 202010019539A CN 113087988 A CN113087988 A CN 113087988A
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- parts
- trifluoro
- plastic composite
- wood
- ethoxysilane
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- 239000000463 material Substances 0.000 title claims abstract description 49
- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 41
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 41
- SQEMPDQYHLWOFE-UHFFFAOYSA-N 2,2,2-trifluoroethoxysilane Chemical compound FC(F)(F)CO[SiH3] SQEMPDQYHLWOFE-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229920002554 vinyl polymer Polymers 0.000 title claims abstract description 28
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 25
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 18
- 235000009566 rice Nutrition 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 7
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 7
- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- -1 vinyl tris (2, 2 Chemical compound 0.000 claims abstract description 6
- 241000209094 Oryza Species 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 12
- 229940057995 liquid paraffin Drugs 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 239000008188 pellet Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 7
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 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 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002023 wood Substances 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and a preparation method thereof, wherein the preparation method comprises the following steps: and (2) mixing 30-40 parts by weight of rice hull powder, 60-70 parts by weight of PE, 2-3 parts by weight of antioxidant, 2-4 parts by weight of lubricant and 1-3 parts by weight of vinyl tris (2, 2, 2-trifluoro) ethoxysilane for 10-15min, then extruding and granulating the obtained mixed material, and then carrying out injection molding to obtain the wood-plastic composite material. According to the invention, vinyl tri (2, 2, 2-trifluoro) ethoxysilane is adopted to modify the wood-plastic composite material, so that the interfacial bonding force between the raw materials is enhanced, the hydrophobic characteristic of the raw materials is fully utilized, the wood-plastic composite material with low water absorption is prepared, and the application range of the wood-plastic composite material is expanded.
Description
Technical Field
The invention relates to the field of wood-plastic composite materials, in particular to a vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and a preparation method thereof.
Background
At present, the importance of forest resources is increasingly obvious, the overall environmental protection consciousness of the society is gradually enhanced, and the development of natural plant fiber composite materials has important significance for promoting environmental protection. The wood-plastic composite material is an environment-friendly novel material, and has the advantages of wood and plastic: the dimensional stability, the mechanical property and the thermal stability are good; light weight, low cost, low energy consumption, no toxicity, no smell and good secondary processability. The development of the wood-plastic composite material is beneficial to reducing the white pollution of plastics, is also beneficial to reducing the influence of agricultural and forestry wastes on the environment, and also fully utilizes natural resources. At present, the main research method of the wood-plastic composite material is to improve the interface compatibility through the surface treatment of plant fiber or plastic, thereby realizing the enhancement of the interface bonding strength of the composite material.
The vinyl tri (2, 2, 2-trifluoro) ethoxysilane can form stronger interface bonding force between fibers and polymers, has obvious effect on improving the mechanical property of the composite material, can obviously reduce the water absorption of the wood-plastic composite material, and is beneficial to maintaining the dimensional stability of the product.
Disclosure of Invention
On the basis of the background, the invention researches and designs the vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and the preparation method thereof, so as to overcome the defects of insufficient comprehensive mechanical property and high water absorption rate of the traditional wood-plastic composite material. The technical means adopted by the invention are as follows:
a wood-plastic composite material modified by vinyl tri (2, 2, 2-trifluoro) ethoxysilane comprises the following components in parts by weight: 30-40 parts of rice hull powder, 60-70 parts of PE, 2-3 parts of antioxidant, 2-4 parts of lubricant and 1-3 parts of vinyl tri (2, 2, 2-trifluoro) ethoxysilane.
Preferably, the antioxidant is 1010.
Preferably, the lubricant is liquid paraffin.
Preferably, the fineness of the rice hull powder is 600-800 meshes.
A preparation method of a vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material comprises the following steps:
s1, grinding the rice hull powder into 800-mesh powder with the fineness of 600-800 meshes and drying;
s2, drying the PE granules;
s3, mixing 30-40 parts by weight of rice hull powder obtained in the step S1, 60-70 parts by weight of PE obtained in the step S2, 2-3 parts by weight of antioxidant, 2-4 parts by weight of lubricant and 1-3 parts by weight of vinyl tri (2, 2, 2-trifluoro) ethoxysilane for 10min to obtain a mixed material;
and S4, extruding and granulating the obtained mixed material, and then performing injection molding to obtain the wood-plastic composite material.
Preferably, in step S1, the drying temperature is 80-100 ℃.
Preferably, in step S2, the PE pellets are dried at 80-100 ℃ for 2-3 hours.
Preferably, in step S3, the mixing time is 10-15 min.
Compared with the prior art, the wood-plastic composite modified by the vinyl tri (2, 2, 2-trifluoro) ethoxysilane coupling agent and the preparation method have the following beneficial effects:
1. the waste rice hulls are recycled, so that the cost is low, and the environment is protected;
2. vinyl tri (2, 2, 2-trifluoro) ethoxysilane is adopted to modify the wood-plastic composite material, so that the interfacial bonding force between the raw materials is enhanced, the hydrophobic characteristic of the raw materials is fully utilized, the wood-plastic composite material with low water absorption rate is prepared, and the application range of the wood-plastic composite material is expanded;
3. the production process is simple, and the obtained wood-plastic composite material has excellent overall performance.
Detailed Description
A wood-plastic composite material modified by vinyl tri (2, 2, 2-trifluoro) ethoxysilane comprises the following components in parts by weight: 30-40 parts of rice hull powder, 60-70 parts of PE, 2-3 parts of 1010, 2-4 parts of liquid paraffin and 1-3 parts of vinyl tri (2, 2, 2-trifluoro) ethoxysilane.
Further, the fineness of the rice hull powder is 600-800 meshes.
A preparation method of a vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material comprises the following steps:
s1, grinding the rice hull powder into powder with the fineness of about 600-800 meshes by using a seven-shaft grinder, and drying the powder in a dryer at the temperature of 80-100 ℃ to ensure that the water content is less than 3 percent;
s2, drying the PE granules at 80-100 ℃ for 2-3 hours;
s3, taking 30-40 parts by weight of the rice hull powder obtained in the step S1, 60-70 parts by weight of the PE obtained in the step S2, 2-3 parts by weight of an antioxidant 1010, 2-4 parts by weight of lubricant liquid paraffin and 1-3 parts by weight of vinyl tris (2, 2, 2-trifluoro) ethoxysilane, and mixing in a high-speed mixer for 10-15min to obtain a mixed material;
and S4, extruding and granulating the obtained mixed material by using an extruder, and then performing injection molding by using an injection machine to obtain the wood-plastic composite material.
Further, in step S4, a twin-screw extruder and a single-screw injector are generally used, which has wide applicability, simple and convenient production, and no need of additional production.
The properties of different wood-plastic composites produced are illustrated below by means of examples and comparative 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 greater the water absorption, the greater the water absorption capacity of the material.
Example 1:
grinding the rice hull powder into powder with the fineness of about 600-800 meshes by using a seven-shaft grinder, drying the powder by using a dryer at 80 ℃ until the water content is less than 3%, and drying the PE granules for two hours at 80 ℃.
Weighing 105 parts by weight of a base component (the base component is the processed rice hull powder and PE, an antioxidant 1010 and lubricant liquid paraffin, and mixing the base component and the antioxidant 1010 and the lubricant liquid paraffin in respective parts by weight), putting the base component and 1 part by weight of vinyl tri (2, 2, 2-trifluoro) ethoxysilane into a high-speed mixer for mixing for 10min, discharging, putting the mixture into a double-screw extruder for material making, and then using an injection machine for injection molding to prepare a sample strip, wherein the temperature of the extruder is controlled to be between 150 ℃ and 180 ℃, the rotating speed is 200r/min, and the four-section temperature of the injection machine is respectively set to be 130 ℃, 150 ℃, 170 ℃ and 160 ℃.
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 130 ℃, the fifth zone is 140 ℃, the sixth zone is 150 ℃, the seventh zone is 160 ℃, the eighth zone is 170 ℃, the ninth zone is 180 ℃, the tenth zone is 180 ℃, and the head temperature is 170 ℃.
According to the test standards in Table 2, the sample strips obtained at the corresponding weight ratios of the raw material components were subjected to the performance test, and the results are shown in Table 1.
Example 2:
except that 105 parts by weight of the base component and 1.5 parts by weight of vinyltris (2, 2, 2-trifluoro) ethoxysilane were weighed out in example 1.
Example 3:
the difference from example 1 was that 105 parts by weight of the base component and 2 parts by weight of vinyltris (2, 2, 2-trifluoro) ethoxysilane were weighed out.
Example 4:
except that 105 parts by weight of the base component and 2.5 parts by weight of vinyltris (2, 2, 2-trifluoro) ethoxysilane were weighed out in example 1.
Example 5:
except that 105 parts by weight of the base component and 3 parts by weight of vinyltris (2, 2, 2-trifluoro) ethoxysilane were weighed out in example 1.
Comparative example:
grinding the rice hull powder into powder with the fineness of about 600-800 meshes by using a seven-shaft grinder, drying the powder by using a dryer at 80 ℃ until the water content is less than 3%, and drying the PE granules for two hours at 80 ℃.
Weighing 105 parts by weight of base components (the base components are the processed rice hull powder and PE, the antioxidant 1010 and the lubricant liquid paraffin, mixing the base components according to respective parts by weight), putting the mixture into a high-speed mixer for mixing for 10min, discharging, putting the mixture into a double-screw extruder for material manufacturing, and then performing injection molding by using an injection machine to prepare a sample strip, wherein the temperature of the extruder is controlled between 150 ℃ and 180 ℃, the rotating speed is 200r/min, and the four-section temperature of the injection machine is respectively set to 130 ℃, 150 ℃, 170 ℃ and 160 ℃.
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 130 ℃, the fifth zone is 140 ℃, the sixth zone is 150 ℃, the seventh zone is 160 ℃, the eighth zone is 170 ℃, the ninth zone is 180 ℃, the tenth zone is 180 ℃, and the head temperature is 170 ℃.
According to the test standards in Table 2, the sample strips obtained at the corresponding weight ratios of the raw material components were subjected to the performance test, and the results are shown in Table 1.
TABLE 1
TABLE 2
As can be seen from the data in Table 1, the addition of vinyltris (2, 2, 2-trifluoro) ethoxysilane to the raw materials increases the tensile strength of the wood-plastic composite material and reduces the water absorption; and with the increase of the dosage of the vinyl tri (2, 2, 2-trifluoro) ethoxysilane, the tensile strength of the wood-plastic composite material is increased and then reduced, the water absorption rate is gradually reduced, and the elongation at break is basically unchanged. When the amount of vinyltris (2, 2, 2-trifluoro) ethoxysilane is 2.5 parts by weight, the tensile strength reaches the maximum value, the water absorption is low, and the comprehensive performance is optimal.
The invention not only utilizes the characteristic of the vinyl tri (2, 2, 2-trifluoro) ethoxysilane coupling agent to enhance the interface bonding force, but also fully utilizes the hydrophobic characteristic thereof, improves the defect of generally higher water absorption of the wood-plastic composite material, prepares the wood-plastic composite material with low water absorption and expands the application range of the wood-plastic composite material.
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 (8)
1. A wood-plastic composite material modified by vinyl tri (2, 2, 2-trifluoro) ethoxysilane is characterized in that: the paint comprises the following components in parts by weight: 30-40 parts of rice hull powder, 60-70 parts of PE, 2-3 parts of antioxidant, 2-4 parts of lubricant and 1-3 parts of vinyl tri (2, 2, 2-trifluoro) ethoxysilane.
2. The wood-plastic composite modified by vinyltris (2, 2, 2-trifluoro) ethoxysilane according to claim 1, characterized in that: the antioxidant is 1010.
3. The wood-plastic composite modified by vinyltris (2, 2, 2-trifluoro) ethoxysilane according to claim 1, characterized in that: the lubricant is liquid paraffin.
4. The wood-plastic composite modified by vinyltris (2, 2, 2-trifluoro) ethoxysilane according to claim 1, characterized in that: the fineness of the rice hull powder is 600-800 meshes.
5. A preparation method of vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material is characterized in that: the method comprises the following steps:
s1, grinding the rice hull powder into 800-mesh powder with the fineness of 600-800 meshes and drying;
s2, drying the PE granules;
s3, mixing 30-40 parts by weight of rice hull powder obtained in the step S1, 60-70 parts by weight of PE obtained in the step S2, 2-3 parts by weight of antioxidant, 2-4 parts by weight of lubricant and 1-3 parts by weight of vinyl tris (2, 2, 2-trifluoro) ethoxy silane to obtain a mixed material;
and S4, extruding and granulating the obtained mixed material, and then performing injection molding to obtain the wood-plastic composite material.
6. The preparation method of the vinyl tris (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material according to claim 5, characterized in that: in step S1, the drying temperature is 80-100 ℃.
7. The preparation method of the vinyl tris (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material according to claim 5, characterized in that: in step S2, the PE pellets are dried at 80-100 ℃ for 2-3 hours.
8. The preparation method of the vinyl tris (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material according to claim 5, characterized in that: in step S3, the mixing time is 10-15 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019539.7A CN113087988A (en) | 2020-01-08 | 2020-01-08 | Vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019539.7A CN113087988A (en) | 2020-01-08 | 2020-01-08 | Vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN113087988A true CN113087988A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010019539.7A Pending CN113087988A (en) | 2020-01-08 | 2020-01-08 | Vinyl tri (2, 2, 2-trifluoro) ethoxysilane modified wood-plastic composite material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583276A (en) * | 2022-03-10 | 2022-06-03 | 东莞凯德新能源有限公司 | High-wettability electrolyte and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103012462A (en) * | 2013-01-16 | 2013-04-03 | 甘肃省化工研究院 | Preparation method of vinyl tris(2,2,2-trifluoro) ethoxyl silane compound |
| CN105400226A (en) * | 2015-11-25 | 2016-03-16 | 无锡啄木鸟环保建材有限公司 | PE (polyethylene) wood-plastic composite material with high modulus |
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2020
- 2020-01-08 CN CN202010019539.7A patent/CN113087988A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103012462A (en) * | 2013-01-16 | 2013-04-03 | 甘肃省化工研究院 | Preparation method of vinyl tris(2,2,2-trifluoro) ethoxyl silane compound |
| CN105400226A (en) * | 2015-11-25 | 2016-03-16 | 无锡啄木鸟环保建材有限公司 | PE (polyethylene) wood-plastic composite material with high modulus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583276A (en) * | 2022-03-10 | 2022-06-03 | 东莞凯德新能源有限公司 | High-wettability electrolyte and preparation method thereof |
| CN114583276B (en) * | 2022-03-10 | 2024-04-02 | 东莞凯德新能源有限公司 | High-wettability electrolyte and preparation method thereof |
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