Degradable bio-based material with structural color and preparation method thereof

Abstract

The invention discloses a degradable bio-based material with structural color and a preparation method thereof, and belongs to the technical field of functional materials, the degradable bio-based material comprises the following raw materials by weight: 50-60 parts of polylactide, 30-40 parts of cellulose, 5-7 parts of a flame retardant, 3-5 parts of a plasticizer, and 2-4 parts of an antioxidant. The cellulose is any one of lignin fiber, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose and carboxymethyl cellulose. The plasticizer is citric acid ester. The flame retardant is a degradable bio-based flame retardant, and is any one of chitosan, sodium alginate and lignin. The antioxidant comprises a main antioxidant and an auxiliary antioxidant. According to the degradable bio-based material with the structural color and the preparation method of the degradable bio-based material, the performance of the bio-based material can be greatly improved, harmless and degradable materials are adopted, and the use safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of functional materials, and particularly relates to a degradable bio-based material with structural color and a preparation method of the degradable bio-based material with structural color. BACKGROUND

[0002] Bio-based plastics, as degradable materials, have appeared in people's daily life, and have excellent renewable, low carbon emission, degradability and other advantages. However, the existing bio-based plastics do not have the ability of flame retardation, plasticization and antioxidant, which will affect the use effect.

[0003] Through retrieval, a degradable bio-based material with structural color and a preparation method thereof (application publication number CN119350720A) are found, wherein the preparation method comprises the following steps: uniformly mixing hydroxypropyl cellulose, small molecule carboxylic acid and water to obtain a mixed solution; and the mixed solution is formed into the degradable bio-based material by compression drying. In the mixed solution, the mass fraction of hydroxypropyl cellulose is 50-70wt%. In the mixed solution, the mass fraction of small molecule carboxylic acid is 10-16wt%. The degradable bio-based material with structural color provided in the application has a green and environmentally friendly preparation process, and the obtained degradable bio-based material has adjustable color and excellent mechanical properties. The bio-based material of the above patent has excellent renewable, low carbon emission, degradability and other advantages, but does not have the ability of flame retardation, plasticization and antioxidant, which will affect the use effect.

[0004] Therefore, in view of the above situation, it is urgent to design and produce a degradable bio-based material with structural color and a preparation method thereof to meet the actual needs. SUMMARY

[0005] The present application aims to provide a degradable bio-based material with structural color and a preparation method thereof to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a degradable bio-based material with structural color, comprising: polylactide, cellulose, flame retardant, plasticizer, antioxidant, and the weight mass fraction of each raw material is: polylactide 50-60 parts, cellulose 30-40 parts, flame retardant 5-7 parts, plasticizer 3-5 parts, antioxidant 2-4 parts.

[0007] The cellulose is any one of lignin fiber, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose and carboxymethyl cellulose.

[0008] The plasticizer is set as citric acid ester.

[0009] The flame retardant is arranged as a degradable bio-based flame retardant, and is arranged as any one of chitosan, sodium alginate and lignin.

[0010] The antioxidant includes a primary antioxidant and an auxiliary antioxidant, and is mixed in equal proportions.

[0011] The primary antioxidant is arranged as any one of a hindered phenolic antioxidant and an aromatic amine antioxidant, and the auxiliary antioxidant is arranged as any one of a phosphite antioxidant and a thioester antioxidant.

[0012] A preparation method of a degradable bio-based material with structural color, comprising the following steps:

[0013] Step one, raw material preparation: each raw material is weighed and crushed in turn, and then placed in a stirring device in turn;

[0014] Step two, stirring: the stirring device is started to stir and evenly stir the raw materials;

[0015] Step three, material taking: the evenly stirred raw materials are taken out and placed in a designated mold;

[0016] Step four, drying and forming: the mold is dried to obtain a formed product, then unloaded, and after unloading, inspected and tested, and after inspection and testing, packaged and stored.

[0017] The stirring device is arranged to rotate at a speed of 300-500 revolutions per minute, and the heating temperature of the stirring is arranged to be 60-80 degrees Celsius, and after stirring, the bubble operation is performed.

[0018] The drying temperature is arranged to be 100-200 degrees Celsius, and the drying time is arranged to be 100-120 minutes.

[0019] The raw material preparation operation introduces a specified pigment into the stirring device, and the color of the pigment is arranged as any one of blue, green, yellow-green, orange, red, and blue-green.

[0020] Compared with the prior art, the technical effects and advantages of the present application are:

[0021] The degradable bio-based material with structural color and the preparation method thereof greatly improve the performance of the bio-based material due to the design of the flame retardant, plasticizer and antioxidant, and all use harmless degradable materials to ensure the safety of use.

[0022] The degradable bio-based material with structural color and the preparation method thereof are designed based on cellulose, which not only enhances the use effect, but also has flame retardant performance.

[0023] The degradable bio-based material with structural color and the preparation method thereof can greatly improve the performance of the bio-based material, and all use harmless degradable materials to ensure the safety of use. DETAILED DESCRIPTION

[0024] In the following description, numerous specific details are set forth to provide a more thorough understanding of the present application. However, it will be apparent to one of skill in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present application.

[0025] Embodiment one

[0026] The present application provides a kind of degradable bio-based material with structural color, comprising: poly-L-lactide, cellulose, flame retardant, plasticizer, antioxidant, each raw material weight mass fraction ratio is as follows: poly-L-lactide 50 parts, cellulose 30 parts, flame retardant 5 parts, plasticizer 3 parts, antioxidant 2 parts.

[0027] Cellulose is set as any one of lignin fiber, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose and carboxymethyl cellulose.

[0028] Plasticizer is set as citric acid ester.

[0029] Flame retardant is set as degradable bio-based flame retardant, and is set as any one of chitosan, sodium alginate and lignin.

[0030] Antioxidant includes main antioxidant and auxiliary antioxidant, and is mixed in equal proportion, main antioxidant is set as any one of hindered phenolic antioxidant and aromatic amine antioxidant, auxiliary antioxidant is set as any one of antioxidant in phosphite and thioester.

[0031] A kind of preparation method of degradable bio-based material with structural color, comprising the following steps: each raw material weight mass fraction ratio is as follows:

[0032] Step one, raw material preparation: each raw material is weighed and crushed in turn, then is placed in stirring equipment in turn;

[0033] Step two, stirring: the raw material is stirred and stirred evenly by starting stirring equipment;

[0034] Step three, take material: the raw material stirred evenly is taken out and placed in specified mould;

[0035] Step four, drying and forming: the mould is dried, and the formed product is obtained, then is unloaded, after unloading, is checked and inspected, after checking and inspection are qualified, is packaged and stored.

[0036] The rotation speed of the stirring device is set to 300 revolutions per minute, and the heating temperature of the stirring is set to 60 degrees Celsius. After stirring, the bubble removal operation is performed.

[0037] The drying temperature is set to 100 degrees Celsius, and the drying time is set to 100 minutes.

[0038] In the raw material preparation operation, the specified pigment is introduced into the stirring device. The color of the pigment is set to any one of blue, green, yellow-green, orange, red, and blue-green.

[0039] Example Two

[0040] The present application provides a degradable bio-based material with structural color, comprising: polylactide, cellulose, flame retardant, plasticizer, antioxidant, and the weight mass fraction of each raw material is: polylactide 60 parts, cellulose 40 parts, flame retardant 7 parts, plasticizer 5 parts, antioxidant 4 parts.

[0041] The cellulose is set to any one of lignin fiber, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, and carboxymethyl cellulose.

[0042] The plasticizer is set to citric acid ester.

[0043] The flame retardant is set to a degradable bio-based flame retardant, and is set to any one of chitosan, sodium alginate, and lignin.

[0044] The antioxidant includes a main antioxidant and an auxiliary antioxidant, and is mixed in equal proportions. The main antioxidant is set to any one of hindered phenolic antioxidant and aromatic amine antioxidant, and the auxiliary antioxidant is set to any one of phosphite and thioester antioxidant.

[0045] A preparation method of a degradable bio-based material with structural color, comprising the following steps: the weight mass fraction of each raw material is:

[0046] Step one, raw material preparation: each raw material is weighed and crushed in turn, and then placed into a stirring device in turn;

[0047] Step two, stirring: the stirring device is started to stir and stir the raw materials evenly;

[0048] Step three, material taking: the stirred raw materials are taken out and placed into a specified mold;

[0049] Step four, drying and molding: the mold is dried to obtain a molded product, then the product is unloaded, and after unloading, it is inspected and tested. After inspection and testing, it is packaged and stored.

[0050] The rotation speed of the stirring device is set to 300-500 revolutions per minute, and the heating temperature of the stirring is set to 60-80 degrees Celsius. After stirring, the bubble removal operation is performed.

[0051] The drying temperature is set to 100-200 degrees Celsius, and the drying time is set to 100-120 minutes.

[0052] In the raw material preparation operation, the specified pigment is introduced into the stirring device. The color of the pigment is set to any one of blue, green, yellow-green, orange, red, and blue-green.

[0053] Example Three

[0054] The present application provides a biodegradable bio-based material with structural color, comprising: polylactide, cellulose, flame retardant, plasticizer, antioxidant, and the weight mass fraction of each raw material is: polylactide 55 parts, cellulose 35 parts, flame retardant 6 parts, plasticizer 4 parts, antioxidant 3 parts.

[0055] The cellulose is set to any one of lignin fiber, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, and carboxymethyl cellulose.

[0056] The plasticizer is set to citric acid ester.

[0057] The flame retardant is set to a biodegradable bio-based flame retardant, and is set to any one of chitosan, sodium alginate, and lignin.

[0058] The antioxidant includes a main antioxidant and an auxiliary antioxidant, and is mixed in equal proportions. The main antioxidant is set to any one of hindered phenolic antioxidant and aromatic amine antioxidant, and the auxiliary antioxidant is set to any one of phosphite and thioester antioxidant.

[0059] A preparation method of a biodegradable bio-based material with structural color, comprising the following steps: the weight mass fraction of each raw material is:

[0060] Step one, raw material preparation: each raw material is weighed and crushed in turn, and then placed in a stirring device in turn;

[0061] Step two, stirring: the stirring device is started to stir and stir the raw materials evenly;

[0062] Step three, material taking: the stirred raw materials are taken out and placed in a specified mold;

[0063] Step four, drying and molding: the mold is dried to obtain a molded product, then the product is unloaded, and after unloading, the product is inspected and tested. After inspection and testing, the product is packaged and stored.

[0064] The rotation speed of the stirring device is set to 400 revolutions per minute, and the heating temperature of the stirring is set to 70 degrees Celsius. After stirring, the bubble removal operation is performed.

[0065] The drying temperature is set to 150 degrees Celsius, and the drying time is set to 110 minutes.

[0066] In the raw material preparation operation, the specified pigment is introduced into the stirring device. The color of the pigment is set to any one of blue, green, yellow-green, orange, red, and blue-green.

[0067] Comparative example

[0068] The present application provides a biodegradable bio-based material with structural color, comprising: polylactide, cellulose, flame retardant, plasticizer, antioxidant, the weight mass fraction of each raw material is: polylactide 80 parts, cellulose 20 parts, flame retardant 9 parts, plasticizer 1 part, antioxidant 1 part.

[0069] The cellulose is set to any one of lignin fiber, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose and carboxymethyl cellulose.

[0070] The plasticizer is set to citric acid ester.

[0071] The flame retardant is set to a biodegradable bio-based flame retardant, and is set to any one of chitosan, sodium alginate and lignin.

[0072] The antioxidant includes a main antioxidant and an auxiliary antioxidant, and is mixed in equal proportions. The main antioxidant is set to any one of hindered phenolic antioxidant and aromatic amine antioxidant, and the auxiliary antioxidant is set to any one of phosphite and thioester antioxidant.

[0073] A preparation method of a biodegradable bio-based material with structural color, comprising the following steps: the weight mass fraction of each raw material is:

[0074] Step one, raw material preparation: each raw material is weighed and crushed in turn, and then placed into a stirring device in turn;

[0075] Step two, stirring: the stirring device is started to stir and stir the raw materials evenly;

[0076] Step three, material taking: the stirred raw materials are taken out and placed into a specified mold;

[0077] Step four, drying and molding: the mold is dried to obtain a molded product, then the product is unloaded, and after unloading, the product is inspected and tested. After inspection and testing, the product is packaged and stored.

[0078] The rotation speed of the stirring device is set to 20 revolutions per minute, and the heating temperature of the stirring is set to 40 degrees Celsius. After stirring, the bubble-removing operation is performed.

[0079] The drying temperature is set to 30 degrees Celsius, and the drying time is set to 80 minutes.

[0080] In the raw material preparation operation, the specified pigment is introduced into the stirring device. The color of the pigment is set to any one of blue, green, yellow-green, orange, red, and blue-green.

[0081] Through comprehensive comparison of multiple experiments, the effects of Example One, Example Two, and Example Three are better than that of the control example. Among Example One, Example Two, and Example Three, the effect of Example Three is better than that of Example One and Example Two.

[0082] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art, according to the technical solution and the inventive concept of the present application, can make equivalent replacements or changes within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A biodegradable bio-based material with structural color, characterized by: include: Polylactide, cellulose, flame retardant, plasticizer, antioxidant, the weight and mass proportions of each raw material are: polylactide 50-60 parts, cellulose 30-40 parts, flame retardant 5-7 parts, plasticizer 3-5 parts, antioxidant 2-4 parts.

2. The biodegradable bio-based material with structural color according to claim 1, characterized in that: The cellulose is configured as any one of lignin fiber, methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose and carboxymethyl cellulose.

3. The biodegradable bio-based material with structural color according to claim 1, characterized in that: The plasticizer is set to be citrate.

4. The biodegradable bio-based material with structural color according to claim 1, characterized in that: The flame retardant is a biodegradable bio-based flame retardant, and is any one of chitosan, sodium alginate and lignin.

5. The biodegradable bio-based material with structural color according to claim 1, characterized in that: The antioxidant includes a primary antioxidant and an auxiliary antioxidant, which are mixed in equal proportions.

6. The biodegradable bio-based material with structural color according to claim 1, characterized in that: The primary antioxidant is set to be any one of a hindered phenol antioxidant and an aromatic amine antioxidant, and the auxiliary antioxidant is set to be any one of a phosphite antioxidant and a thioester antioxidant.

7. A method for preparing a degradable bio-based material with structural color according to any one of claims 1 to 6, characterized in that: The following steps are involved: The weight and mass proportions of each raw material are as follows: Step 1: Raw material preparation: weigh and crush each raw material in turn, and then put it into the mixing equipment in turn; Step 2: Stirring: Turn on the stirring equipment to stir and mix the raw materials; Step 3: Take out the mixed raw materials and place them into the designated mold; Step 4: Drying and molding: Dry the mold to obtain the molded product, then unload it. After unloading, check and test it. After passing the inspection and testing, pack and store it.

8. The method for preparing a degradable bio-based material with structural color according to claim 7, characterized in that: The rotation speed of the stirring device is set to 300-500 revolutions per minute, the heating temperature of the stirring is set to 60-80 degrees Celsius, and the bubble release operation is performed after stirring evenly.

9. The method for preparing a degradable bio-based material with structural color according to claim 8, characterized in that: The drying temperature is set to 100-200 degrees Celsius, and the drying time is set to 100-120 minutes.

10. The method for preparing a degradable bio-based material with structural color according to claim 9, characterized in that: During the raw material preparation operation, a specified pigment is introduced into the stirring device, and the color of the pigment is set to any one of blue, green, yellow-green, orange, red, and blue-green.