CN113045801A - High-performance hydrolysis-resistant biodegradable starch-based master batch and preparation method thereof - Google Patents
High-performance hydrolysis-resistant biodegradable starch-based master batch and preparation method thereof Download PDFInfo
- Publication number
- CN113045801A CN113045801A CN201911379611.0A CN201911379611A CN113045801A CN 113045801 A CN113045801 A CN 113045801A CN 201911379611 A CN201911379611 A CN 201911379611A CN 113045801 A CN113045801 A CN 113045801A
- Authority
- CN
- China
- Prior art keywords
- starch
- master batch
- degradation
- resistant biodegradable
- placing
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Biological Depolymerization Polymers (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-performance hydrolysis-resistant biodegradable starch-based master batch, which is prepared from the following raw materials in parts by mass: 48% of porous starch, 14% of light calcium carbonate, 7% of talcum powder, 17% of polyethylene, and a compatilizer: 3.5% of maleic anhydride, and modifier: 3.5% of MgJia picture GX-V series, and lubricant: 3.5 percent of PE and 3.5 percent of degradation accelerant. In the invention, the porous starch is used as a bioactive substance, and the light, the oxygen and the thermal degradation accelerant are added, so that the porous starch has the characteristic of multiple degradation under the action of the light, the oxygen, the heat and the microorganism. After the degradation process is an induction period (controllable), the master batch and the product thereof lose the original use performance, the mechanical property is sharply reduced, and then the master batch and the product thereof are degraded into fragments and powder, so that the influence on the environment is reduced; the adopted porous starch, water, oil and the like have the absorption degree higher than that of common starch, so that the degradation is accelerated to a certain degree, and the degradation rate of the plastic is improved.
Description
Technical Field
The invention relates to the technical field of master batches, in particular to a high-performance hydrolysis-resistant biodegradable starch-based master batch and a preparation method thereof.
Background
Masterbatches are resin components or binders within reinforced plastics in which fibers or other reinforcing materials are dispersed. The continuous phase in the composite is referred to as the masterbatch or the matrix.
Plastics have been widely developed in many fields due to their advantages of light weight, high strength, stable chemical properties, low cost, etc. The plastic industry is developing rapidly, and the used plastic has no proper treatment method, so the plastic garbage can bring serious pollution to the natural environment. The existing plastic garbage can pollute the environment when discarded, can occupy land when buried deeply, and can pollute the air when burnt out.
Disclosure of Invention
The invention aims to: in order to solve the problem that the existing plastic can not be well treated, the high-performance hydrolysis-resistant biodegradable starch-based master batch and the preparation method thereof are provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the high-performance hydrolysis-resistant biodegradable starch-based master batch is prepared from the following raw materials in parts by mass: 48% of porous starch, 14% of light calcium carbonate, 7% of talcum powder, 17% of plastic material, 3.5% of compatilizer, 3.5% of modifier, 3.5% of lubricant and 3.5% of degradation accelerator.
As a further description of the above technical solution:
the plastic material is polyethylene, polypropylene or polyvinyl chloride.
As a further description of the above technical solution:
the compatilizer is maleic anhydride.
As a further description of the above technical solution:
the lubricant is PE, PTFE or PP.
As a further description of the above technical solution:
the modifier is a magnesium Jia picture GX-V series modifier.
A preparation method of a high-performance hydrolysis-resistant biodegradable starch-based master batch comprises the following steps:
the method comprises the following steps: weighing certain mass of disodium hydrogen phosphate and citric acid solid, respectively preparing 0.2mol/L solution and 0.1mol/L solution, weighing certain mass of corn starch, placing in a 250ml conical flask, adding Mclvaine buffer solution with certain pH value, and oscillating in constant temperature water bath for 10 min;
step two: weighing alpha amylase, preparing enzyme solution with a certain concentration by using Mclvaine buffer solution, transferring the enzyme solution into starch suspension, oscillating for a period of time, centrifuging the suspension for 20min at 300/min, measuring the volume of supernatant, transferring the supernatant into a volumetric flask, washing the residual starch with distilled water, centrifuging, repeating the operation for 3 times, drying the obtained starch in a vacuum drying oven until the weight is constant, grinding, and sieving by using a 100-mesh sieve to obtain a porous starch finished product;
step three: weighing the components according to the mass fraction ratio;
step four: placing the porous starch, the light calcium carbonate and the talcum powder into a mixer, and mixing and stirring for 3-8 minutes at the temperature of 160-185 ℃;
step five: adding a compatilizer, mixing and stirring for 3-8 minutes at the temperature of 145-165 ℃, adding a plastic material, a degradation promoter and a lubricant, mixing and stirring for 9-14 minutes at the temperature of 165-180 ℃, and then placing the mixture material into a material container for cooling to obtain a mixed base material;
step six: and (3) placing the obtained mixed base material into granulation equipment for granulation to obtain the degradable starch-based plastic master batch, wherein the temperature of the granulation equipment is 125-175 ℃.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, the porous starch is used as a bioactive substance, and the light, the oxygen and the thermal degradation accelerant are added, so that the porous starch has the characteristic of multiple degradation under the action of the light, the oxygen, the heat and the microorganism. After the degradation process is an induction period (controllable), the master batch and the product thereof lose the original use performance, the mechanical property is sharply reduced, and then the master batch and the product thereof are degraded into fragments and powder, so that the influence on the environment is reduced.
2. In the invention, the adopted porous starch, water, oil and the like have the absorption degree higher than that of common starch, thereby accelerating the degradation to a certain degree and improving the degradation rate of plastics.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The high-performance hydrolysis-resistant biodegradable starch-based master batch is prepared from the following raw materials in parts by mass: 48% of porous starch, 14% of light calcium carbonate, 7% of talcum powder, 17% of polyethylene, and a compatilizer: 3.5% of maleic anhydride, and modifier: 3.5% of MgJia picture GX-V series, and lubricant: 3.5 percent of PE and 3.5 percent of degradation accelerant.
A preparation method of a high-performance hydrolysis-resistant biodegradable starch-based master batch comprises the following steps:
the method comprises the following steps: weighing certain mass of disodium hydrogen phosphate and citric acid solid, respectively preparing 0.2mol/L solution and 0.1mol/L solution, weighing certain mass of corn starch, placing in a 250ml conical flask, adding Mclvaine buffer solution with certain pH value, and oscillating in constant temperature water bath for 10 min;
step two: weighing alpha amylase, preparing enzyme solution with a certain concentration by using Mclvaine buffer solution, transferring the enzyme solution into starch suspension, oscillating for a period of time, centrifuging the suspension for 20min at 300/min, measuring the volume of supernatant, transferring the supernatant into a volumetric flask, washing the residual starch with distilled water, centrifuging, repeating the operation for 3 times, drying the obtained starch in a vacuum drying oven until the weight is constant, grinding, and sieving by using a 100-mesh sieve to obtain a porous starch finished product;
step three: weighing the components according to the mass fraction ratio;
step four: placing the porous starch, the light calcium carbonate and the talcum powder into a mixer, and mixing and stirring for 5 minutes at the temperature of 160-185 ℃;
step five: adding a compatilizer, mixing and stirring for 5 minutes at the temperature of 145-165 ℃, adding a plastic material, a degradation promoter and a lubricant, mixing and stirring for 12 minutes at the temperature of 165-180 ℃, and then placing the mixed material in a material container for cooling to obtain a mixed base material;
step six: and (3) placing the obtained mixed base material into granulation equipment for granulation to obtain the degradable starch-based plastic master batch, wherein the temperature of the granulation equipment is 125-175 ℃.
Example 2
The high-performance hydrolysis-resistant biodegradable starch-based master batch is prepared from the following raw materials in parts by mass: 48% of porous starch, 14% of light calcium carbonate, 7% of talcum powder, 17% of polyethylene, and a compatilizer: 3.5% of maleic anhydride, and modifier: 3.5% of MgJia picture GX-V series, and lubricant: 3.5 percent of PE and 3.5 percent of degradation accelerant.
A preparation method of a high-performance hydrolysis-resistant biodegradable starch-based master batch comprises the following steps:
the method comprises the following steps: weighing certain mass of disodium hydrogen phosphate and citric acid solid, respectively preparing 0.2mol/L solution and 0.1mol/L solution, weighing certain mass of corn starch, placing in a 250ml conical flask, adding Mclvaine buffer solution with certain pH value, and oscillating in constant temperature water bath for 10 min;
step two: weighing alpha amylase, preparing enzyme solution with a certain concentration by using Mclvaine buffer solution, transferring the enzyme solution into starch suspension, oscillating for a period of time, centrifuging the suspension for 20min at 300/min, measuring the volume of supernatant, transferring the supernatant into a volumetric flask, washing the residual starch with distilled water, centrifuging, repeating the operation for 3 times, drying the obtained starch in a vacuum drying oven until the weight is constant, grinding, and sieving by using a 100-mesh sieve to obtain a porous starch finished product;
step three: weighing the components according to the mass fraction ratio;
step four: placing the porous starch, the light calcium carbonate and the talcum powder into a mixer, and mixing and stirring for 8 minutes at the temperature of 160-185 ℃;
step five: adding a compatilizer, mixing and stirring for 6 minutes at the temperature of 145-165 ℃, adding a plastic material, a degradation promoter and a lubricant, mixing and stirring for 14 minutes at the temperature of 165-180 ℃, and then placing the mixed material in a material container for cooling to obtain a mixed base material;
step six: and (3) placing the obtained mixed base material into granulation equipment for granulation to obtain the degradable starch-based plastic master batch, wherein the temperature of the granulation equipment is 125-175 ℃.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The high-performance hydrolysis-resistant biodegradable starch-based master batch is characterized by being prepared from the following raw materials in percentage by mass: 48% of porous starch, 14% of light calcium carbonate, 7% of talcum powder, 17% of plastic material, 3.5% of compatilizer, 3.5% of modifier, 3.5% of lubricant and 3.5% of degradation accelerator.
2. The high performance hydrolysis resistant biodegradable starch-based masterbatch according to claim 1, wherein said plastic material is polyethylene, polypropylene or polyvinyl chloride.
3. The high performance hydrolysis resistant biodegradable starch-based masterbatch according to claim 1, wherein said compatibilizer is maleic anhydride.
4. The high performance hydrolysis resistant biodegradable starch-based masterbatch according to claim 1, wherein said lubricant is PE, PTFE or PP.
5. The high-performance hydrolysis-resistant biodegradable starch-based masterbatch according to claim 1, wherein the modifier is MgGeorge GX-V series modifier.
6. The preparation method of the high-performance hydrolysis-resistant biodegradable starch-based master batch according to claim 1, characterized by comprising the following steps:
the method comprises the following steps: weighing certain mass of disodium hydrogen phosphate and citric acid solid, respectively preparing 0.2mol/L solution and 0.1mol/L solution, weighing certain mass of corn starch, placing in a 250ml conical flask, adding Mclvaine buffer solution with certain pH value, and oscillating in constant temperature water bath for 10 min;
step two: weighing alpha amylase, preparing enzyme solution with a certain concentration by using Mclvaine buffer solution, transferring the enzyme solution into starch suspension, oscillating for a period of time, centrifuging the suspension for 20min at 300/min, measuring the volume of supernatant, transferring the supernatant into a volumetric flask, washing the residual starch with distilled water, centrifuging, repeating the operation for 3 times, drying the obtained starch in a vacuum drying oven until the weight is constant, grinding, and sieving by using a 100-mesh sieve to obtain a porous starch finished product;
step three: weighing the components according to the mass fraction ratio;
step four: placing the porous starch, the light calcium carbonate and the talcum powder into a mixer, and mixing and stirring for 3-8 minutes at the temperature of 160-185 ℃;
step five: adding a compatilizer, mixing and stirring for 3-8 minutes at the temperature of 145-165 ℃, adding a plastic material, a degradation promoter and a lubricant, mixing and stirring for 9-14 minutes at the temperature of 165-180 ℃, and then placing the mixture material into a material container for cooling to obtain a mixed base material;
step six: and (3) placing the obtained mixed base material into granulation equipment for granulation to obtain the degradable starch-based plastic master batch, wherein the temperature of the granulation equipment is 125-175 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379611.0A CN113045801A (en) | 2019-12-27 | 2019-12-27 | High-performance hydrolysis-resistant biodegradable starch-based master batch and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379611.0A CN113045801A (en) | 2019-12-27 | 2019-12-27 | High-performance hydrolysis-resistant biodegradable starch-based master batch and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113045801A true CN113045801A (en) | 2021-06-29 |
Family
ID=76506720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911379611.0A Pending CN113045801A (en) | 2019-12-27 | 2019-12-27 | High-performance hydrolysis-resistant biodegradable starch-based master batch and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113045801A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4985082A (en) * | 1987-11-20 | 1991-01-15 | Lafayette Applied Chemistry, Inc. | Microporous granular starch matrix compositions |
| US5919486A (en) * | 1993-12-27 | 1999-07-06 | San-Ei Sucrochemical Co., Ltd. | Powder preparation and a process for preparing the same |
| CN101319053A (en) * | 2008-07-08 | 2008-12-10 | 江南大学 | Method for preparing fatty acid stephanoporate starch ester and application thereof |
| CN101429294A (en) * | 2008-05-29 | 2009-05-13 | 孙彦升 | Full-biodegradation plastic starch master batch, preparation and uses thereof |
| CN101851355A (en) * | 2010-06-23 | 2010-10-06 | 孙彦升 | Degradable starch-based plastic masterbatch and preparation method thereof |
| CN103304850A (en) * | 2012-03-13 | 2013-09-18 | 昆山还原高分子材料有限公司 | Degradable starch-based resin composition and preparation method thereof |
| CN109867850A (en) * | 2019-03-15 | 2019-06-11 | 成都新柯力化工科技有限公司 | A kind of starch-based degradable packaging film plastic matrix and preparation method |
| CN109912889A (en) * | 2019-03-25 | 2019-06-21 | 成都新柯力化工科技有限公司 | A method of improving starch-based degradable plastics thermal stability |
-
2019
- 2019-12-27 CN CN201911379611.0A patent/CN113045801A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4985082A (en) * | 1987-11-20 | 1991-01-15 | Lafayette Applied Chemistry, Inc. | Microporous granular starch matrix compositions |
| US5919486A (en) * | 1993-12-27 | 1999-07-06 | San-Ei Sucrochemical Co., Ltd. | Powder preparation and a process for preparing the same |
| CN101429294A (en) * | 2008-05-29 | 2009-05-13 | 孙彦升 | Full-biodegradation plastic starch master batch, preparation and uses thereof |
| CN101319053A (en) * | 2008-07-08 | 2008-12-10 | 江南大学 | Method for preparing fatty acid stephanoporate starch ester and application thereof |
| CN101851355A (en) * | 2010-06-23 | 2010-10-06 | 孙彦升 | Degradable starch-based plastic masterbatch and preparation method thereof |
| CN103304850A (en) * | 2012-03-13 | 2013-09-18 | 昆山还原高分子材料有限公司 | Degradable starch-based resin composition and preparation method thereof |
| CN109867850A (en) * | 2019-03-15 | 2019-06-11 | 成都新柯力化工科技有限公司 | A kind of starch-based degradable packaging film plastic matrix and preparation method |
| CN109912889A (en) * | 2019-03-25 | 2019-06-21 | 成都新柯力化工科技有限公司 | A method of improving starch-based degradable plastics thermal stability |
Non-Patent Citations (2)
| Title |
|---|
| 姚卫蓉等: "淀粉性质及预处理对多孔淀粉形成的影响", 《中国粮油学报》 * |
| 徐玲等: "复合酶解法制备多孔淀粉的工艺研究", 《现代食品科技》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102344656B (en) | Highly-toughened bulk molding materials | |
| CN101602884A (en) | A kind of heat-resistance polylactic acid composite material and preparation method thereof | |
| CN107216672A (en) | A kind of wood plastic composite and preparation method | |
| CN103333514B (en) | Degradable reinforced plant fiber material and preparation method thereof | |
| CN103044636B (en) | Preparation method of enzymatically hydrolyzed sericin protein composite absorbent material | |
| CN106188842B (en) | Polypropylene/bamboo particle/ultra micro bamboo charcoal composite material preparation method | |
| CN109749382B (en) | PLA master batch with high filling of bamboo powder and preparation method thereof | |
| CN113045801A (en) | High-performance hydrolysis-resistant biodegradable starch-based master batch and preparation method thereof | |
| CN103043949A (en) | Method for manufacturing novel decorating material taking sodium chloride as base material | |
| CN106317338A (en) | Long-chain branched polylactic acid resin and preparation method thereof | |
| CN105694239A (en) | Waste PCB (printed circuit board) nonmetal powder/EPDM rubber composite material and preparation method thereof | |
| CN107057248A (en) | A kind of Degradable environment-friendlyplastic plastic and preparation method thereof | |
| CN111534071A (en) | Straw/polylactic acid composite material and preparation method thereof | |
| CN106700199A (en) | Wear-resistant plastic bag and processing technology therefor | |
| CN113321936B (en) | High-strength biomass membrane material and preparation method thereof | |
| CN109852024A (en) | A kind of Novel foaming light diffusion PC material and preparation method thereof | |
| CN108410090A (en) | A kind of degradable environmentally-friendly plastic and preparation method thereof | |
| CN103804910B (en) | A kind of glass, SiO2Strengthen Polyphenylene Sulfide Toughened material and preparation method thereof | |
| CN111908819A (en) | Liquid alkali-free accelerator and preparation method thereof | |
| CN106905628A (en) | It is a kind of to can be used for polystyrene material of 3D printing and preparation method thereof | |
| CN111040282A (en) | High-strength high-heat-resistance polyethylene glass fiber reinforced belt and preparation method thereof | |
| CN108250551A (en) | A kind of Multifucntional environment-friendly cable material and preparation method thereof | |
| CN110483956A (en) | One kind is containing the modified polyadipate/butylene terephthalate composite material and preparation method of banana bast fiber | |
| CN116693920B (en) | Antibacterial packaging film and preparation method thereof | |
| CN109096628A (en) | A kind of ageing-resistant plastic tube and preparation method thereof that resists cold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210629 |
|
| RJ01 | Rejection of invention patent application after publication |