CN114395192A - Preparation method of lycopodium clavatum powder modified starch-polypropylene waterproof composite material - Google Patents
Preparation method of lycopodium clavatum powder modified starch-polypropylene waterproof composite material Download PDFInfo
- Publication number
- CN114395192A CN114395192A CN202210159428.5A CN202210159428A CN114395192A CN 114395192 A CN114395192 A CN 114395192A CN 202210159428 A CN202210159428 A CN 202210159428A CN 114395192 A CN114395192 A CN 114395192A
- Authority
- CN
- China
- Prior art keywords
- composite material
- starch
- lycopodium clavatum
- polypropylene
- modified starch
- 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.)
- Pending
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- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 43
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 43
- 241000195954 Lycopodium clavatum Species 0.000 title claims abstract description 41
- 239000000843 powder Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229920002472 Starch Polymers 0.000 claims abstract description 40
- 235000019698 starch Nutrition 0.000 claims abstract description 40
- 239000008107 starch Substances 0.000 claims abstract description 40
- 239000007822 coupling agent Substances 0.000 claims abstract description 20
- -1 polypropylene Polymers 0.000 claims abstract description 18
- 238000004898 kneading Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 12
- 239000012856 weighed raw material Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 235000005013 Pinus cembroides Nutrition 0.000 abstract description 9
- 235000008575 Pinus pinea Nutrition 0.000 abstract description 9
- 240000007789 Pinus pinea Species 0.000 abstract description 9
- 239000010902 straw Substances 0.000 abstract description 3
- 230000002209 hydrophobic effect Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
Abstract
The invention discloses a preparation method of a lycopodium clavatum powder modified starch-polypropylene waterproof composite material, which comprises the steps of adding starch, glycerol, lycopodium clavatum powder and a coupling agent into an internal mixer for uniform kneading to realize the composite hydrophobic modification of lycopodium clavatum powder to starch, and then carrying out melt blending and compounding on the prepared lycopodium clavatum starch composite material and polypropylene to prepare the lycopodium clavatum powder modified starch-polypropylene waterproof composite material. The stone pine powder modified starch-polypropylene waterproof composite material prepared by the invention has good hydrophobicity and waterproofness, and can be processed into disposable tableware such as disposable lunch boxes, disposable straws and disposable cups with good waterproofness.
Description
Technical Field
The invention relates to a preparation technology of a high polymer packaging material, in particular to a preparation method of a starch-polypropylene waterproof composite material.
Background
The polypropylene is a plastic with wide application, the starch is biodegradable, and the polypropylene starch composite material with degradability can be prepared by adding the starch into the polypropylene, and can be used for preparing disposable tableware such as disposable lunch boxes, disposable straws, disposable cups and the like. When the polypropylene starch composite material is used as a material for manufacturing disposable tableware, certain waterproofness is generally required to prevent the disposable tableware manufactured by the polypropylene starch composite material from being unusable due to water absorption.
The stone pine powder modified starch-polypropylene waterproof composite material with good waterproofness, which is prepared by improving the hydrophobicity of the surface of the polypropylene starch composite material, has important application value in the fields of disposable tableware and the like.
The herba Lycopodii, caulis Endadae Phaseoloidis, caulis tinosporae, and cortex Phellodendri can be dried powder of plant herba Lycopodii, and has the advantages of no water and moisture absorption.
Disclosure of Invention
The invention aims to provide a preparation method of a lycopodium clavatum powder modified starch-polypropylene waterproof composite material, and the lycopodium clavatum powder modified starch-polypropylene waterproof composite material prepared by the method has good waterproofness.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a lycopodium clavatum powder modified starch-polypropylene waterproof composite material is characterized by comprising the following steps:
firstly, weighing the components according to the mass ratio of starch to glycerol to lycopodium clavatum powder to coupling agent =100 to (30-60) to (5-20) to (0.5-3), adding starch and glycerol into an internal mixer, uniformly kneading, adding lycopodium clavatum powder and coupling agent, and further uniformly kneading to obtain lycopodium clavatum starch composite material;
and secondly, adding the weighed raw materials into a stirrer to be uniformly mixed according to the mass ratio of the polypropylene to the lycopodium clavatum starch composite material = 100: 50-150 to obtain a mixture, adding the mixture into a double-screw extruder to be melted, blended and extruded to obtain the lycopodium clavatum powder modified starch-polypropylene waterproof composite material.
The coupling agent in the first step is at least one of silane coupling agent and titanate coupling agent.
Compared with the prior art, the invention has the following advantages:
according to the invention, starch, glycerol, lycopodium clavatum powder and a coupling agent are added into an internal mixer to be uniformly kneaded to realize the composite hydrophobic modification of lycopodium clavatum powder to starch, and then the prepared lycopodium clavatum starch composite material and polypropylene are melted, blended and compounded to prepare the lycopodium clavatum powder modified starch-polypropylene waterproof composite material, so that the water absorption and moisture absorption of the starch in the polypropylene starch composite material are reduced, and the prepared lycopodium clavatum powder modified starch-polypropylene waterproof composite material has better hydrophobicity and waterproofness.
The stone pine powder modified starch-polypropylene waterproof composite material prepared by the invention can be used for processing disposable tableware such as disposable lunch boxes, disposable straws and disposable cups with good waterproofness.
Detailed Description
The technical solution of the present invention is further described in detail by the following specific examples.
Example 1
The preparation method of the lycopodium clavatum powder modified starch-polypropylene waterproof composite material comprises the following steps:
firstly, weighing the components according to the mass ratio of starch to glycerol to stone pine powder to coupling agent = 100: 50: 10: 2, adding the starch and the glycerol into an internal mixer to be uniformly kneaded, and then adding the stone pine powder and the coupling agent to be further uniformly kneaded to obtain a stone pine starch composite material;
and secondly, adding the weighed raw materials into a stirrer to be uniformly mixed according to the mass ratio of the polypropylene to the lycopodium clavatum starch composite material = 100: 100 to obtain a mixture, adding the mixture into a double-screw extruder to be melted, blended and extruded to obtain the lycopodium clavatum powder modified starch-polypropylene waterproof composite material.
The coupling agent in the first step is a silane coupling agent.
Example 2
The preparation method of the lycopodium clavatum powder modified starch-polypropylene waterproof composite material comprises the following steps:
firstly, weighing the components according to the mass ratio of starch to glycerol to stone pine powder to coupling agent = 100: 60: 20: 3, adding the starch and the glycerol into an internal mixer to be uniformly kneaded, and then adding the stone pine powder and the coupling agent to be further uniformly kneaded to obtain a stone pine starch composite material;
and secondly, adding the weighed raw materials into a stirrer to be uniformly mixed according to the mass ratio of the polypropylene to the lycopodium clavatum starch composite material = 100: 150 to obtain a mixture, adding the mixture into a double-screw extruder to be melted, blended and extruded to obtain the lycopodium clavatum powder modified starch-polypropylene waterproof composite material.
The coupling agent in the first step is a silane coupling agent.
Example 3
The preparation method of the lycopodium clavatum powder modified starch-polypropylene waterproof composite material comprises the following steps:
firstly, weighing the components according to the mass ratio of starch to glycerol to lycopodium clavatum powder to coupling agent = 100: 30: 5: 0.5, adding the starch and the glycerol into an internal mixer for uniformly kneading, and then adding lycopodium clavatum powder and the coupling agent for further uniformly kneading to obtain a lycopodium clavatum starch composite material;
and secondly, adding the weighed raw materials into a stirrer to be uniformly mixed according to the mass ratio of the polypropylene to the lycopodium clavatum starch composite material = 100: 50 to obtain a mixture, adding the mixture into a double-screw extruder to be melted, blended and extruded to obtain the lycopodium clavatum powder modified starch-polypropylene waterproof composite material.
The coupling agent in the first step is a titanate coupling agent.
Comparative example 1
The preparation method of the polypropylene starch composite material of the comparative example comprises the following steps:
step one, weighing the components according to the mass ratio of starch to glycerol =100 to 50, and adding the weighed components into an internal mixer for uniformly kneading to obtain a starch and glycerol composite material;
and secondly, adding the weighed raw materials into a stirrer to be uniformly mixed according to the mass ratio of the polypropylene to the starch glycerol composite material = 100: 100 to obtain a mixture, and adding the mixture into a double-screw extruder to be melted, blended and extruded to obtain the polypropylene starch composite material.
Performance evaluation method: the materials prepared in the above examples and comparative examples were tested for contact angle according to ISO15989-2004 standard. The contact angle is the angle from the solid-liquid interface to the gas-liquid interface through the liquid inside at the interface of solid, liquid and gas. The larger the contact angle of the solid surface, the better the hydrophobicity and water repellency of the solid surface. The results of the above tests are shown in table 1.
TABLE 1 Performance test results of examples 1-3 and comparative example 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | |
| Contact angle | 92 degree | 103 degree | 101 degree | 67 degree |
From the performance test results of examples 1-3 and comparative example 1, it can be seen that the contact angles of the lycopodium clavatum powder modified starch-polypropylene waterproof composite materials (examples 1-3) are higher than those of the pure polypropylene starch composite material (comparative example 1), which indicates that the lycopodium clavatum powder modified starch-polypropylene waterproof composite material has good hydrophobicity and waterproofness.
Claims (2)
1. A preparation method of a lycopodium clavatum powder modified starch-polypropylene waterproof composite material is characterized by comprising the following steps:
firstly, weighing the components according to the mass ratio of starch to glycerol to lycopodium clavatum powder to coupling agent =100 to (30-60) to (5-20) to (0.5-3), adding starch and glycerol into an internal mixer, uniformly kneading, adding lycopodium clavatum powder and coupling agent, and further uniformly kneading to obtain lycopodium clavatum starch composite material;
and secondly, adding the weighed raw materials into a stirrer to be uniformly mixed according to the mass ratio of the polypropylene to the lycopodium clavatum starch composite material = 100: 50-150 to obtain a mixture, adding the mixture into a double-screw extruder to be melted, blended and extruded to obtain the lycopodium clavatum powder modified starch-polypropylene waterproof composite material.
2. The method for preparing the lycopodium clavatum powder modified starch-polypropylene waterproof composite material as claimed in claim 1, wherein the coupling agent in the first step is at least one of silane coupling agent and titanate coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210159428.5A CN114395192A (en) | 2022-02-22 | 2022-02-22 | Preparation method of lycopodium clavatum powder modified starch-polypropylene waterproof composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210159428.5A CN114395192A (en) | 2022-02-22 | 2022-02-22 | Preparation method of lycopodium clavatum powder modified starch-polypropylene waterproof composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114395192A true CN114395192A (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210159428.5A Pending CN114395192A (en) | 2022-02-22 | 2022-02-22 | Preparation method of lycopodium clavatum powder modified starch-polypropylene waterproof composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114395192A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408586A (en) * | 2011-09-09 | 2012-04-11 | 优势塑胶制品（安吉）有限公司 | Blend of thermoplastic starch and polypropylene and preparation method thereof |
| US20120139154A1 (en) * | 2009-08-18 | 2012-06-07 | Michel Huneault | Process of Producing Thermoplastic Starch/Polymer Blends |
| US20130096236A1 (en) * | 2010-03-25 | 2013-04-18 | Roquette Freres | Plant material compositions and method for preparing same |
-
2022
- 2022-02-22 CN CN202210159428.5A patent/CN114395192A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120139154A1 (en) * | 2009-08-18 | 2012-06-07 | Michel Huneault | Process of Producing Thermoplastic Starch/Polymer Blends |
| US20130096236A1 (en) * | 2010-03-25 | 2013-04-18 | Roquette Freres | Plant material compositions and method for preparing same |
| CN102408586A (en) * | 2011-09-09 | 2012-04-11 | 优势塑胶制品（安吉）有限公司 | Blend of thermoplastic starch and polypropylene and preparation method thereof |
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Application publication date: 20220426 |
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