CN112920572A - High-temperature-resistant polylactic resin and modified production process thereof - Google Patents
High-temperature-resistant polylactic resin and modified production process thereof Download PDFInfo
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- 239000011347 resin Substances 0.000 title claims abstract description 79
- 229920005989 resin Polymers 0.000 title claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 94
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 47
- 238000005187 foaming Methods 0.000 claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 43
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 32
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 32
- 239000003054 catalyst Substances 0.000 claims abstract description 32
- 239000004014 plasticizer Substances 0.000 claims abstract description 32
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 21
- 239000004626 polylactic acid Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 20
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical group CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 238000012216 screening Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical group C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 claims description 5
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical group OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 5
- 235000011150 stannous chloride Nutrition 0.000 claims description 5
- 239000001119 stannous chloride Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 238000004659 sterilization and disinfection Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0028—Use of organic additives containing nitrogen
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- 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
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- 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
- C08K3/32—Phosphorus-containing compounds
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
Abstract
The invention discloses a high temperature resistant polylactic resin and a modified production process thereof, and the formula comprises: triglycidyl isocyanurate, polylactic resin, calcium carbonate, a catalyst, an antioxidant and a plasticizer, wherein the components in percentage by mass are as follows: 15-25 parts of triglycidyl isocyanurate, 40-60 parts of polylactic resin, 20-30 parts of calcium carbonate, 20-30 parts of catalyst, 5-10 parts of antioxidant and 10-20 parts of plasticizer; the polylactic acid resin is safe and reliable, is prepared by adopting polylactic acid resin as a raw material, matching triglycidyl isocyanurate, calcium carbonate, a catalyst, an antioxidant and a plasticizer, mixing, stirring and foaming, greatly increases the high temperature resistance of the polylactic acid resin, increases the toughness and the strength of the polylactic acid resin, enlarges the application range of the polylactic acid resin material, is convenient to prepare, and saves time and labor; the invention has simple and precise process, cheap raw materials, low cost and convenient processing, and greatly saves the production cost.
Description
Technical Field
The invention relates to the technical field of polylactic resin, in particular to high-temperature-resistant polylactic resin and a modification production process thereof.
Background
Polylactic acid, also known as polylactide, is a polyester polymer obtained by polymerizing lactic acid as a main raw material, and is a novel biodegradable material; the traditional polylactic resin modified has poor high temperature resistance, easy decomposition and low toughness and strength, so that the polylactic resin material has narrow application range, and the manufacturing process of the polylactic resin and the modified production process thereof is troublesome, time-consuming and labor-consuming; in addition, the traditional polylactic resin and the modification production process thereof have expensive raw materials, are troublesome to process, increase the production cost and are not beneficial to processing and production; in view of these defects, it is necessary to design a high temperature resistant polylactic resin and a modified production process thereof.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant polylactic resin and a modification production process thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: a high-temperature-resistant polylactic resin comprises the following components in percentage by weight: triglycidyl isocyanurate, polylactic resin, calcium carbonate, a catalyst, an antioxidant and a plasticizer, wherein the components in percentage by mass are as follows: 15-25 parts of triglycidyl isocyanurate, 40-60 parts of polylactic resin, 20-30 parts of calcium carbonate, 20-30 parts of catalyst, 5-10 parts of antioxidant and 10-20 parts of plasticizer.
A modified production process of high temperature resistant polylactic resin comprises the following steps of, step one, selecting materials; step two, mixing uniformly; step three, heating and melting; step four, foaming and forming; step five, storing and placing;
in the first step, the contents of the components are as follows: selecting and weighing 15-25 parts of triglycidyl isocyanurate, 40-60 parts of polylactic resin, 20-30 parts of calcium carbonate, 20-30 parts of catalyst, 5-10 parts of antioxidant and 10-20 parts of plasticizer;
in the second step, the step of uniformly mixing comprises the following steps:
1) manually preparing a stirring kettle, adding the polylactic resin, adding a certain amount of water, and mixing and stirring for 10-20 min;
2) adding triglycidyl isocyanurate, stirring for 10-20min, adding plasticizer while stirring, sealing the stirring kettle after adding, and reacting for 40-60 min; in the third step, the heating and melting comprises the following steps:
1) manually screening and filtering the calcium carbonate, then pouring the calcium carbonate into a crusher, starting the crusher to crush the calcium carbonate, and then screening the calcium carbonate again by using a filter screen;
2) pouring the sieved calcium carbonate into a stirring kettle, adding a catalyst and an antioxidant, raising the temperature to 60-80 ℃, and continuously reacting for 1-2 h;
in the fourth step, the foaming molding comprises the following steps:
1) manually pouring the mixture obtained in the step three 2) into a foaming machine, then slowly stirring for 20-30min, sealing the foaming machine, introducing carbon dioxide into the foaming machine, and foaming and forming the mixture;
2) introducing the mixture after foaming molding into a foaming machine again, reducing the temperature to 10-20 ℃, and then extruding the mixture from a die orifice to obtain the modified high-temperature-resistant polylactic resin;
in the fifth step, the modified high-temperature-resistant polylactic resin obtained in the fourth step 2) is manually screened, then quantitatively bagged, and stored in a cool place.
According to the technical scheme, the contents of the components are respectively as follows: 20 parts of triglycidyl isocyanurate, 50 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer.
According to the technical scheme, the catalyst is stannous chloride; the antioxidant is phosphite; the plasticizer is tributyl citrate.
According to the technical scheme, the stirring kettle in the step two 1) needs to be cleaned in advance before use.
According to the technical scheme, the filter screen in the step three 1) is 140-160 meshes.
According to the technical scheme, in the fifth step, disinfection treatment is required before bagging.
Compared with the prior art, the invention has the following beneficial effects: the polylactic acid resin is safe and reliable, is prepared by adopting polylactic acid resin as a raw material, matching triglycidyl isocyanurate, calcium carbonate, a catalyst, an antioxidant and a plasticizer, mixing, stirring and foaming, greatly increases the high temperature resistance of the polylactic acid resin, increases the toughness and the strength of the polylactic acid resin, enlarges the application range of the polylactic acid resin material, is convenient to prepare, and saves time and labor; the method has simple and precise process, can replace other expensive polylactic resin modification production process, has obvious effect, cheap raw materials and low cost, is convenient to process, greatly saves the production cost, and is beneficial to processing and production.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1, the present invention provides a technical solution: a high temperature resistant polylactic resin and a modified production process thereof are disclosed:
example 1:
a high-temperature-resistant polylactic resin comprises the following components in percentage by weight: triglycidyl isocyanurate, polylactic resin, calcium carbonate, a catalyst, an antioxidant and a plasticizer, wherein the components in percentage by mass are as follows: 15 parts of triglycidyl isocyanurate, 60 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer.
A modified production process of high temperature resistant polylactic resin comprises the following steps of, step one, selecting materials; step two, mixing uniformly; step three, heating and melting; step four, foaming and forming; step five, storing and placing;
in the first step, the contents of the components are as follows: selecting 15 parts of triglycidyl isocyanurate, 60 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer, and weighing;
in the second step, the step of uniformly mixing comprises the following steps:
1) manually preparing a stirring kettle, cleaning the stirring kettle in advance before use, adding the polylactic resin, adding a certain amount of water, and mixing and stirring for 10-20 min;
2) adding triglycidyl isocyanurate, stirring for 10-20min, adding plasticizer while stirring, sealing the stirring kettle after adding, and reacting for 40-60 min; in the third step, the heating and melting comprises the following steps:
1) manually screening and filtering the calcium carbonate, then pouring the calcium carbonate into a crusher, starting the crusher to crush the calcium carbonate, and then screening the calcium carbonate again by using a filter screen, wherein the filter screen is 140-160 meshes;
2) pouring the sieved calcium carbonate into a stirring kettle, adding a catalyst and an antioxidant, raising the temperature to 60-80 ℃, and continuously reacting for 1-2 h;
in the fourth step, the foaming molding comprises the following steps:
1) manually pouring the mixture obtained in the step three 2) into a foaming machine, then slowly stirring for 20-30min, sealing the foaming machine, introducing carbon dioxide into the foaming machine, and foaming and forming the mixture;
2) introducing the mixture after foaming molding into a foaming machine again, reducing the temperature to 10-20 ℃, and then extruding the mixture from a die orifice to obtain the modified high-temperature-resistant polylactic resin;
in the fifth step, the modified high-temperature-resistant polylactic resin obtained in the fourth step 2) is manually screened, then quantitatively bagged, sterilized before bagging and stored in a cool place.
Wherein the catalyst is stannous chloride; the antioxidant is phosphite; the plasticizer is tributyl citrate.
Example 2:
a high-temperature-resistant polylactic resin comprises the following components in percentage by weight: triglycidyl isocyanurate, polylactic resin, calcium carbonate, a catalyst, an antioxidant and a plasticizer, wherein the components in percentage by mass are as follows: 20 parts of triglycidyl isocyanurate, 50 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer.
A modified production process of high temperature resistant polylactic resin comprises the following steps of, step one, selecting materials; step two, mixing uniformly; step three, heating and melting; step four, foaming and forming; step five, storing and placing;
in the first step, the contents of the components are as follows: selecting 20 parts of triglycidyl isocyanurate, 50 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer, and weighing;
in the second step, the step of uniformly mixing comprises the following steps:
1) manually preparing a stirring kettle, cleaning the stirring kettle in advance before use, adding the polylactic resin, adding a certain amount of water, and mixing and stirring for 10-20 min;
2) adding triglycidyl isocyanurate, stirring for 10-20min, adding plasticizer while stirring, sealing the stirring kettle after adding, and reacting for 40-60 min; in the third step, the heating and melting comprises the following steps:
1) manually screening and filtering the calcium carbonate, then pouring the calcium carbonate into a crusher, starting the crusher to crush the calcium carbonate, and then screening the calcium carbonate again by using a filter screen, wherein the filter screen is 140-160 meshes;
2) pouring the sieved calcium carbonate into a stirring kettle, adding a catalyst and an antioxidant, raising the temperature to 60-80 ℃, and continuously reacting for 1-2 h;
in the fourth step, the foaming molding comprises the following steps:
1) manually pouring the mixture obtained in the step three 2) into a foaming machine, then slowly stirring for 20-30min, sealing the foaming machine, introducing carbon dioxide into the foaming machine, and foaming and forming the mixture;
2) introducing the mixture after foaming molding into a foaming machine again, reducing the temperature to 10-20 ℃, and then extruding the mixture from a die orifice to obtain the modified high-temperature-resistant polylactic resin;
in the fifth step, the modified high-temperature-resistant polylactic resin obtained in the fourth step 2) is manually screened, then quantitatively bagged, sterilized before bagging and stored in a cool place.
Wherein the catalyst is stannous chloride; the antioxidant is phosphite; the plasticizer is tributyl citrate.
Example 3:
a high-temperature-resistant polylactic resin comprises the following components in percentage by weight: triglycidyl isocyanurate, polylactic resin, calcium carbonate, a catalyst, an antioxidant and a plasticizer, wherein the components in percentage by mass are as follows: 25 parts of triglycidyl isocyanurate, 40 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer.
A modified production process of high temperature resistant polylactic resin comprises the following steps of, step one, selecting materials; step two, mixing uniformly; step three, heating and melting; step four, foaming and forming; step five, storing and placing;
in the first step, the contents of the components are as follows: selecting 25 parts of triglycidyl isocyanurate, 40 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer, and weighing;
in the second step, the step of uniformly mixing comprises the following steps:
1) manually preparing a stirring kettle, cleaning the stirring kettle in advance before use, adding the polylactic resin, adding a certain amount of water, and mixing and stirring for 10-20 min;
2) adding triglycidyl isocyanurate, stirring for 10-20min, adding plasticizer while stirring, sealing the stirring kettle after adding, and reacting for 40-60 min;
in the third step, the heating and melting comprises the following steps:
1) manually screening and filtering the calcium carbonate, then pouring the calcium carbonate into a crusher, starting the crusher to crush the calcium carbonate, and then screening the calcium carbonate again by using a filter screen, wherein the filter screen is 140-160 meshes;
2) pouring the sieved calcium carbonate into a stirring kettle, adding a catalyst and an antioxidant, raising the temperature to 60-80 ℃, and continuously reacting for 1-2 h;
in the fourth step, the foaming molding comprises the following steps:
1) manually pouring the mixture obtained in the step three 2) into a foaming machine, then slowly stirring for 20-30min, sealing the foaming machine, introducing carbon dioxide into the foaming machine, and foaming and forming the mixture;
2) introducing the mixture after foaming molding into a foaming machine again, reducing the temperature to 10-20 ℃, and then extruding the mixture from a die orifice to obtain the modified high-temperature-resistant polylactic resin;
in the fifth step, the modified high-temperature-resistant polylactic resin obtained in the fourth step 2) is manually screened, then quantitatively bagged, sterilized before bagging and stored in a cool place.
Wherein the catalyst is stannous chloride; the antioxidant is phosphite; the plasticizer is tributyl citrate.
The properties of the above examples are compared in the following table:
based on the above, the polylactic acid resin material has the advantages that the polylactic acid resin material is safe and reliable, the polylactic acid resin material is prepared by taking the polylactic acid resin as a raw material, matching triglycidyl isocyanurate, calcium carbonate, a catalyst, an antioxidant and a plasticizer, mixing, stirring and foaming, the high temperature resistance of the polylactic acid resin is greatly increased, the toughness and the strength of the polylactic acid resin are increased, the application range of the polylactic acid resin material is expanded, the preparation process is convenient, and time and labor are saved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A high-temperature-resistant polylactic resin is characterized in that: the formula comprises the following components: triglycidyl isocyanurate, polylactic resin, calcium carbonate, a catalyst, an antioxidant and a plasticizer, wherein the components in percentage by mass are as follows: 15-25 parts of triglycidyl isocyanurate, 40-60 parts of polylactic resin, 20-30 parts of calcium carbonate, 20-30 parts of catalyst, 5-10 parts of antioxidant and 10-20 parts of plasticizer.
2. A modified production process of high temperature resistant polylactic resin comprises the following steps of, step one, selecting materials; step two, mixing uniformly; step three, heating and melting; step four, foaming and forming; step five, storing and placing; the method is characterized in that:
in the first step, the contents of the components are as follows: selecting and weighing 15-25 parts of triglycidyl isocyanurate, 40-60 parts of polylactic resin, 20-30 parts of calcium carbonate, 20-30 parts of catalyst, 5-10 parts of antioxidant and 10-20 parts of plasticizer;
in the second step, the step of uniformly mixing comprises the following steps:
1) manually preparing a stirring kettle, adding the polylactic resin, adding a certain amount of water, and mixing and stirring for 10-20 min;
2) adding triglycidyl isocyanurate, stirring for 10-20min, adding plasticizer while stirring, sealing the stirring kettle after adding, and reacting for 40-60 min;
in the third step, the heating and melting comprises the following steps:
1) manually screening and filtering the calcium carbonate, then pouring the calcium carbonate into a crusher, starting the crusher to crush the calcium carbonate, and then screening the calcium carbonate again by using a filter screen;
2) pouring the sieved calcium carbonate into a stirring kettle, adding a catalyst and an antioxidant, raising the temperature to 60-80 ℃, and continuously reacting for 1-2 h;
in the fourth step, the foaming molding comprises the following steps:
1) manually pouring the mixture obtained in the step three 2) into a foaming machine, then slowly stirring for 20-30min, sealing the foaming machine, introducing carbon dioxide into the foaming machine, and foaming and forming the mixture;
2) introducing the mixture after foaming molding into a foaming machine again, reducing the temperature to 10-20 ℃, and then extruding the mixture from a die orifice to obtain the modified high-temperature-resistant polylactic resin;
in the fifth step, the modified high-temperature-resistant polylactic resin obtained in the fourth step 2) is manually screened, then quantitatively bagged, and stored in a cool place.
3. The high temperature resistant polylactic acid resin according to claim 1, wherein: the contents of the components are respectively as follows: 20 parts of triglycidyl isocyanurate, 50 parts of polylactic resin, 25 parts of calcium carbonate, 20 parts of catalyst, 5 parts of antioxidant and 20 parts of plasticizer.
4. The high temperature resistant polylactic acid resin according to claim 1, wherein: the catalyst is stannous chloride; the antioxidant is phosphite; the plasticizer is tributyl citrate.
5. The modified production process of the high-temperature-resistant polylactic resin according to claim 2, which is characterized in that: in the second step 1), the stirring kettle needs to be cleaned in advance before use.
6. The modified production process of the high-temperature-resistant polylactic resin according to claim 2, which is characterized in that: the filter screen in the step three 1) is 140-160 meshes.
7. The modified production process of the high-temperature-resistant polylactic resin according to claim 2, which is characterized in that: and in the fifth step, disinfection treatment is required before bagging.
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