CN110294921A - A kind of high-strength environment-friendly paper packaging material and preparation method thereof - Google Patents
A kind of high-strength environment-friendly paper packaging material and preparation method thereof Download PDFInfo
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- CN110294921A CN110294921A CN201810240056.2A CN201810240056A CN110294921A CN 110294921 A CN110294921 A CN 110294921A CN 201810240056 A CN201810240056 A CN 201810240056A CN 110294921 A CN110294921 A CN 110294921A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of high-strength environment-friendly paper packaging materials and preparation method thereof, including following parts by weight of component to be prepared: 20-35 parts of polylactic acid, 15-22 parts of tossa, 10-19 parts of old newsprint, 1-5 parts of sodium hydroxide solution, 0.9-1.7 parts of plasticizer, 1.4-2.1 parts of defoaming agent.The paper-plastic package material that the present invention is prepared is not only environmentally protective, also has good mechanical property, and tensile strength can reach 28.9MPa, and elongation at break sees 125.6%, and tearing strength can reach 92.4KN/m.
Description
Technical field
The present invention relates to packaging material field, in particular to a kind of high-strength environment-friendly paper packaging material and its preparation side
Method.
Background technique
As the development and people of packing technique are to the higher and higher of packing instructions, paper-plastic stick packaging material for food is because of it
Convenience and be used widely.Paper-plastic composite packaging material has merged the advantages of paper and both materials of plastics, therefore has
Very big convenience and usability, in food, medical equal fields are expanded rapidly.Packaging material is extensive while also adjoint because using
Environmental pollution, the hidden danger such as wasting of resources.The paper-plastic stick packaging material for food demand of nontoxic compost degradation is increasing, and gathers
Lactic acid be from renewable resource, it is biodegradable after compost such as cereal, the polymer of cassava, but its brittleness is big, weakens it
Application range needs suitable plasticizer and is improved.Tossa is a kind of plant fiber of high intensity, and material can be enhanced
The mechanical property of material, but the compatibility between plant fiber and high molecular material determines the comprehensive performance of entire material, it is many
Coupling agent all there is damaging effect, the present invention uses sided corona treatment, can largely improve the comprehensive of material
Can, a kind of high-strength environment-friendly paper packaging material being prepared has a good application prospect.
Summary of the invention
Technical problems to be solved:
The object of the present invention is to provide a kind of environmentally friendly, and the high-strength environment-friendly paper packaging material of excellent in mechanical performance
And preparation method thereof.
Technical solution:
The present invention provides a kind of high-strength environment-friendly paper packaging materials, including following parts by weight of component to be prepared:
20-35 parts of polylactic acid,
15-22 parts of tossa,
10-19 parts of old newsprint,
1-5 parts of sodium hydroxide solution,
0.9-1.7 parts of plasticizer,
1.4-2.1 parts of defoaming agent.
Preferably, a kind of high-strength environment-friendly paper packaging material, the tossa is by following preparation methods
It is prepared:
(1) jute is carried out to deinking processing in thermostatic drying chamber, dry, temperature is set as 60 DEG C, dry 2.5h；
(2) jute after drying is subjected to sided corona treatment, the input voltage of sided corona treatment is 220V, and the processing time is 3S, processing
Distance is 12mm, and processing power 600w, test temperature is 25 DEG C；
(3) jute after sided corona treatment is prepared using plant fiber crushing machine spare at tossa.
Preferably, a kind of high-strength environment-friendly paper packaging material, the plasticizer are tributyl citrate, are gathered
1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1.
Preferably, a kind of high-strength environment-friendly paper packaging material, the defoaming agent are dimethicone.
The present invention also provides a kind of preparation methods of high-strength environment-friendly paper packaging material, including following preparation step:
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, is then handled under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling is dried, is then crushed；
(3) then will 15-22 part of treated tossa with old newsprint 10-19 parts after mixing, add polylactic acid 20-
35 parts, 0.9-1.7 parts of plasticizer, 1.4-2.1 parts of defoaming agent continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material on flat-bed press.
Preferably, the preparation method of a kind of high-strength environment-friendly paper packaging material, including following preparation step:
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 15-22 part of treated tossa with old newsprint 10-19 parts after mixing, add polylactic acid 20-
35 parts, 0.9-1.7 parts of plasticizer, 1.4-2.1 parts of defoaming agent continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
The utility model has the advantages that
The present invention replaces the use of wood-fibred using tossa and old newsprint, environmentally protective, cheap, and can alleviate
Timber resources it is in short supply.
The poly-lactic acid material that the present invention uses is a kind of green biodegradable material, uses suitable plasticiser, solution
Polylactic acid of having determined brittleness is higher, the poor problem of toughness.
Tossa is carried out sided corona treatment by the present invention, makes preferably melt between fiber and high molecular material polylactic acid
It closes, avoids the use of coupling agent, it is more environment-friendly and safer.
The present invention passes through to each ingredient and its usage ratio, the stringent control of processing method, the paper being prepared
Material is not only environmentally protective, also has good mechanical property, and tensile strength can reach 28.9/MPa, and elongation at break is seen
To 125.6%, tearing strength can reach 92.4/ (KN/m).
Specific embodiment
The following examples can make those skilled in the art that the present invention be more fully understood, but not limit this in any way
Invention.
Tossa described in embodiment 1-5 and comparative example 1-2 is prepared by following preparation methods:
(1) jute is dried in thermostatic drying chamber, temperature is set as 60 DEG C, dry 2.5h；
(2) jute after drying is subjected to sided corona treatment, the input voltage of sided corona treatment is 220V, and the processing time is 3S, processing
Distance is 12mm, and processing power 600w, test temperature is 25 DEG C；
(3) jute after sided corona treatment is prepared using plant fiber crushing machine spare at tossa.
Embodiment 1
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 10 parts of 22 parts of treated tossa and old newsprint after mixing, add 35 parts of polylactic acid, plasticising
0.9 part of agent, 2.1 parts of dimethicone continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
Embodiment 2
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 19 parts of 15 parts of treated tossa and old newsprint after mixing, add 20 parts of polylactic acid, plasticising
1.7 parts of agent, 1.4 parts of dimethicone continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
Embodiment 3
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 12 parts of 20 parts of treated tossa and old newsprint after mixing, add 30 parts of polylactic acid, plasticising
1.1 parts of agent, 1.9 parts of dimethicone continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
Embodiment 4
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 17 parts of 17 parts of treated tossa and old newsprint after mixing, add 24 parts of polylactic acid, plasticising
1.5 parts of agent, 1.6 parts of dimethicone continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
Embodiment 5
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 15 parts of 18 parts of treated tossa and old newsprint after mixing, add 26 parts of polylactic acid, plasticising
1.3 parts of agent, 1.7 parts of dimethicone continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
Comparative example 1
This comparative example is the difference from embodiment 1 is that the dosage of each ingredient exceeds claim limited range.Specifically
It is:
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 9 parts of 25 parts of treated tossa and old newsprint after mixing, add 15 parts of polylactic acid, plasticising
2 parts of agent, 1 part of defoaming agent continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
Comparative example 2
This comparative example is the difference from embodiment 1 is that the ingredient of plasticizer is different.Specifically saying is:
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 10 parts of 22 parts of treated tossa and old newsprint after mixing, add 35 parts of polylactic acid, plasticising
0.9 part of agent, 2.1 parts of dimethicone continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
Comparative example 3
This comparative example the difference from embodiment 1 is that, the preparation method of tossa is different.Specifically:
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 10 parts of 22 parts of treated tossa and old newsprint after mixing, add 35 parts of polylactic acid, plasticising
0.9 part of agent, 2.1 parts of dimethicone continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Plasticizer is tributyl citrate, and poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1
It forms.
The preparation method of tossa:
(1) jute is dried in thermostatic drying chamber, temperature is set as 60 DEG C, dry 2.5h；
(2) jute after drying is crushed into machine preparation into tossa using plant fiber.
The paper-plastic package material being prepared in embodiment 1-5 and comparative example 1-3 is tested for the property.Tensile property is surveyed
Examination refers to the method in GB/T1010.3-2006, and the method in tearing toughness test reference QB/T 1130-1991 is surveyed
Examination.Test result see the table below:
1 the performance test results of table:
| Sample | Tensile strength/MPa | Elongation at break/% | Tearing strength/(KN/m) |
| Embodiment 1 | 20.9 | 107.5 | 70.7 |
| Embodiment 2 | 21.7 | 111.3 | 72.1 |
| Embodiment 3 | 25.2 | 116.1 | 84.2 |
| Embodiment 4 | 24.3 | 112.4 | 86.3 |
| Embodiment 5 | 28.9 | 125.6 | 92.4 |
| Comparative example 1 | 16.6 | 99.4 | 63.5 |
| Comparative example 2 | 19.5 | 96.4 | 62.4 |
| Comparative example 3 | 17.1 | 94.2 | 61.6 |
By test result it is found that the paper-plastic package material mechanical property that is prepared of the present invention is fine, tensile strength be can reach
28.9/MPa, elongation at break see 125.6%, and tearing strength can reach 92.4/ (KN/m).By the test result of comparative example 1
It is found that the consumption proportion of each component needs to be maintained at the material that compound standard could be prepared in reasonable range.By comparing
The test result of example 2 can increase the flexibility of polylactic acid, glycol molecule it is found that suitable plasticizer is used in compounding
Addition weaken the interface binding power of polylactic acid, hydrone is easily accessible, so as to increase its toughness, apply plasticizer
When, should consider plasticizer to increase the flexibility of material is therefore to want ten dispensings using the tensile strength of expendable material as cost
Anticipate plasticizer dosage and be used in compounding, the plasticizer compounding known to the test result of embodiment 5 in the present invention is suitable, can
The comprehensive performance of material is set to keep best.It, can be with by the test result of comparative example 3 it is found that tossa is after sided corona treatment
The mechanical property of material is improved, the reason is that sided corona treatment is by discharging high-frequency high voltage and high current, and then generation low temperature etc.
Gas ions, so that tossa surface is activated, and wettability enhances, and can preferably be crosslinked with polylactic acid, thus
Improve Mechanical Properties of Materials.
Claims (6)
1. a kind of high-strength environment-friendly paper packaging material, which is characterized in that be prepared including following parts by weight of component:
20-35 parts of polylactic acid,
15-22 parts of tossa,
10-19 parts of old newsprint,
1-5 parts of sodium hydroxide solution,
0.9-1.7 parts of plasticizer,
1.4-2.1 parts of defoaming agent.
2. a kind of high-strength environment-friendly paper packaging material according to claim 1, which is characterized in that the tossa
It is prepared by following preparation methods:
(1) jute is dried in thermostatic drying chamber, temperature is set as 60 DEG C, dry 2.5h；
(2) jute after drying is subjected to sided corona treatment, the input voltage of sided corona treatment is 220V, and the processing time is 3s, processing
Distance is 12mm, and processing power 600w, test temperature is 25 DEG C；
(3) jute after sided corona treatment is prepared using plant fiber crushing machine spare at tossa.
3. a kind of high-strength environment-friendly paper packaging material according to claim 1, which is characterized in that the plasticizer is
Tributyl citrate, poly- 1,2-PD adipate ester and ethylene glycol are mixed according to 0.8:1.3:1.1.
4. a kind of high-strength environment-friendly paper packaging material according to claim 1, which is characterized in that the defoaming agent is
Dimethicone.
5. a kind of preparation method of high-strength environment-friendly paper packaging material, which is characterized in that including following preparation step:
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, is then handled under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling is subjected to deinking processing, it is dry, then crush；
(3) then will 15-22 part of treated tossa with old newsprint 10-19 parts after mixing, add polylactic acid 20-
35 parts, 0.9-1.7 parts of plasticizer, 1.4-2.1 parts of defoaming agent continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material on flat-bed press.
6. a kind of preparation method of high-strength environment-friendly paper packaging material according to claim 5, which is characterized in that including
Following preparation step:
(1) sodium hydroxide solution of 1.5wt% is uniformly sprayed on old newsprint, then handles 1h under the conditions of high-temperature steam；
(2) the disregard message paper material after boiling carries out deinking, and then 55 DEG C of dry 1.5h in thermostatic drying chamber, are then crushed to 40
Mesh；
(3) then will 15-22 part of treated tossa with old newsprint 10-19 parts after mixing, add polylactic acid 20-
35 parts, 0.9-1.7 parts of plasticizer, 1.4-2.1 parts of defoaming agent continues to mix uniformly；
(4) material mixed is mated formation into mold, hot pressing is prepared into packaging material, heat pressing process ginseng on flat-bed press
Number are as follows: 130 DEG C of hot pressing temperature, hot pressing time 5min, hot pressing pressure 8MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810240056.2A CN110294921A (en) | 2018-03-22 | 2018-03-22 | A kind of high-strength environment-friendly paper packaging material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810240056.2A CN110294921A (en) | 2018-03-22 | 2018-03-22 | A kind of high-strength environment-friendly paper packaging material and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962469A (en) * | 2010-09-27 | 2011-02-02 | 李新功 | Method for preparing full-degradable lactic acid composite material from secondary fibers of waste newspaper |
| CN102827385A (en) * | 2011-06-14 | 2012-12-19 | 黑龙江鑫达企业集团有限公司 | Method for preparing natural fiber enhanced PLA composite with high heat resistance, high rigidity and complete degradation |
-
2018
- 2018-03-22 CN CN201810240056.2A patent/CN110294921A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962469A (en) * | 2010-09-27 | 2011-02-02 | 李新功 | Method for preparing full-degradable lactic acid composite material from secondary fibers of waste newspaper |
| CN102827385A (en) * | 2011-06-14 | 2012-12-19 | 黑龙江鑫达企业集团有限公司 | Method for preparing natural fiber enhanced PLA composite with high heat resistance, high rigidity and complete degradation |
Non-Patent Citations (2)
| Title |
|---|
| 徐鼐: "《通用级聚乳酸的改性与加工成型》", 31 January 2016, 中国科学技术大学出版社 * |
| 李莺: ""常压等离子体改性苎麻增强热塑性树脂基复合材料界面性能的研究"", 《中国博士学位论文全文数据库 工程科技I辑》 * |
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