CN110540758A - Preparation method of filler for improving environmental protection property and brightness of plastic - Google Patents
Preparation method of filler for improving environmental protection property and brightness of plastic Download PDFInfo
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- CN110540758A CN110540758A CN201910813514.1A CN201910813514A CN110540758A CN 110540758 A CN110540758 A CN 110540758A CN 201910813514 A CN201910813514 A CN 201910813514A CN 110540758 A CN110540758 A CN 110540758A
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- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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Abstract
The invention discloses a preparation method of a filler for improving the environmental protection property and the vividness of plastics, which comprises the following steps: (1) boiling water cooking treatment, (2) crushing treatment, (3) oxidation treatment, (4) irradiation treatment, (5) soaking modification treatment, and (6) drying treatment. The invention provides a preparation method of a filler for plastic processing, which can be widely popularized and applied under the condition of the existing equipment foundation, the prepared filler has good compatibility with a plastic matrix and high bonding strength, the mechanical quality of the plastic can be improved, the coloring brightness and stability of the plastic are improved, meanwhile, the production cost of the plastic can be reduced, and the plastic is more environment-friendly and is easy to degrade and recycle.
Description
Technical Field
the invention belongs to the technical field of plastic processing, and particularly relates to a preparation method of a filler for improving the environmental protection property and the brightness of plastics.
Background
plastic products are a general term for articles for daily life, industry and the like which are processed by adopting plastics as main raw materials, and comprise products of all processes such as injection molding, plastic sucking and the like which take plastics as raw materials, the plastics are synthetic polymer materials with plasticity, and the plastics, synthetic rubber and synthetic fibers form three indispensable synthetic materials in daily life, specifically, the plastics take natural or synthetic resin as main components, various additives are added, the plastics can be molded into a certain shape under the conditions of certain temperature, pressure and the like, the shape is kept unchanged at normal temperature, compared with metal, stone, wood, the plastic products have the advantages of low cost, strong plasticity and the like, the plastic products are widely applied in national economy, the plastic industry occupies an extremely important position in the world at present, and the production of the plastic products develops at high speed in various parts of the world for many years. The plastic product yield of China is always in the front in the world ranking, wherein the yield of various plastic products is already in the first position of the world, and China becomes a world large country for plastic product production. In order to improve the mechanical quality of plastic products, filler components such as calcium carbonate, diatomite and the like are usually added into the plastic products, but the dispersion performance of the fillers in the plastic products is poor, and the interface formed after filling is easy to fall off and separate, so that the overall effect is poor.
Disclosure of Invention
The invention aims to provide a preparation method of a filler for improving the environmental protection property and the vividness of plastics aiming at the existing problems.
the invention is realized by the following technical scheme:
A preparation method of a filler for improving the environmental protection and the vividness of plastics comprises the following steps:
(1) Boiling water cooking treatment: putting crop straws into boiling water, heating and cooking for 30-35 min, taking out, washing with clear water, and naturally drying for later use;
(2) And (3) crushing treatment: putting the crop straws treated in the step (1) into a crusher for crushing treatment, and taking out the crushed crop straws for later use;
(3) Oxidation treatment: soaking the crushed material obtained in the step (2) into hydrogen peroxide solution for oxidation treatment for 4-5 h, taking out, washing with deionized water to be neutral, and obtaining an oxidized material for later use;
(4) irradiation treatment: putting the oxidized material obtained in the step (3) into an irradiation box for irradiation treatment, and taking out the oxidized material after 10-15 min to obtain an irradiated material for later use;
(5) Soaking modification treatment: soaking the irradiated material obtained in the step (4) into the solution A for soaking modification treatment, continuously stirring for 1-2 h, filtering, washing with deionized water once, and taking out to obtain a modified material for later use; the solution A comprises the following components in parts by weight: 4-6 parts of mercaptoacetic acid, 5-8 parts of ammonium thiosulfate, 14-16 parts of nano carbon powder, 6-9 parts of chitosan, 7-10 parts of bacterial cellulose, 15-20 parts of titanate coupling agent, 8-12 parts of sodium pyrophosphate, 2-5 parts of sodium dodecyl benzene sulfonate, 25-30 parts of n-butyl alcohol and 260-280 parts of deionized water;
(6) and (3) drying treatment: and (5) putting the modified material obtained in the step (5) into a vacuum drying oven for drying treatment, and taking out after 40-50 min to obtain the finished product filler.
Further, the crop straw in the step (1) is any one of wheat straw, rice straw and corn straw.
Further, the particle diameter of the crushed material is controlled to be not more than 2cm after the crushing treatment in the step (2).
Further, the mass fraction of hydrogen peroxide in the hydrogen peroxide solution during the oxidation treatment in the step (3) is 2.5-3%, and the pH value of the hydrogen peroxide solution is 10-11.
Further, the irradiation treatment in the step (4) is microwave irradiation treatment, during which the output power in the irradiation box is controlled to be 600-660W, and the inside of the irradiation box is in an oxygen-free environment.
further, the rotating speed of stirring is controlled to be 1800-2000 rpm during the stirring treatment in the step (5); and heating the solution A during the soaking modification treatment to keep the temperature of the solution A at 55-60 ℃.
Further, the vacuum degree in the vacuum drying oven is controlled to be 1-5 Pa during the drying treatment in the step (6), and the drying temperature is controlled to be 80-85 ℃.
in order to enhance the service performance of plastic products, the invention specially prepares a filler component for filling, the main raw material of the filler component is biomass straw, the source of the filler component is wide, the price of the filler component is low, the production cost of the plastic can be effectively reduced, and the degradation and recovery performance of the plastic is improved. The filler is prepared by boiling water, decomposing and removing colloid, phenols and other components in the straw by continuous boiling of the boiling water, effectively loosening the fiber structure, enlarging fiber gaps, then crushing, thinning the fiber particle length, facilitating subsequent filling and use, then carrying out oxidation treatment, soaking by alkaline hydrogen peroxide solution, removing lignin in the straw fiber, promoting the exposure of cellulose and the change of a crystal structure, carrying out solubilization modification on macromolecular hemicellulose, further improving the binding capacity of the straw fiber and a plastic matrix raw material, then carrying out irradiation treatment, irradiating by utilizing the high-energy action of microwaves, improving the types and the quantity of active groups on the surface of the fiber, and improving the dispersion binding capacity of the straw fiber, meanwhile, the specific surface area and the adsorption property of the fiber can be improved, finally, soaking modification treatment is carried out, soaking treatment is carried out by utilizing the solution A, the bonding strength of the fiber and a plastic macromolecular chain can be improved by utilizing a sulfur-containing group, added nano carbon powder can be filled and fixed in fiber pores, the adsorption property of the fiber is further improved, and the enhancement of the fiber strength and the stability is facilitated, the addition of chitosan, bacterial cellulose and a titanate coupling agent can form a film on the surface part of the wood fiber, the bonding capability of the fiber is improved, the bonding strength between the finally treated filler and a plastic matrix is high, and the fixing of the colorant particles can be effectively captured, the dyeing brightness and the stability are improved, and the comprehensive performance of the plastic is improved.
Compared with the prior art, the invention has the following advantages:
the invention provides a method for preparing a filler for plastic processing, which can be widely popularized and applied under the condition of the existing equipment foundation, the prepared filler has good compatibility with a plastic matrix and high bonding strength, the mechanical quality of the plastic can be improved, the coloring brightness and stability of the plastic are improved, meanwhile, the production cost of the plastic can be reduced, the plastic is more environment-friendly and is easy to degrade and recycle, and the practical value is high.
Detailed Description
Example 1
A preparation method of a filler for improving the environmental protection and the vividness of plastics comprises the following steps:
(1) Boiling water cooking treatment: putting crop straws into boiling water, heating, cooking for 30min, taking out, washing with clear water, and naturally drying for later use;
(2) And (3) crushing treatment: putting the crop straws treated in the step (1) into a crusher for crushing treatment, and taking out the crushed crop straws for later use;
(3) Oxidation treatment: soaking the crushed material obtained in the step (2) in hydrogen peroxide solution for oxidation treatment for 4h, taking out and washing with deionized water to be neutral to obtain an oxidized material for later use;
(4) Irradiation treatment: placing the oxidized material obtained in the step (3) into an irradiation box for irradiation treatment, and taking out the oxidized material after 10min to obtain an irradiation material for later use;
(5) soaking modification treatment: soaking the irradiated material obtained in the step (4) into the solution A for soaking modification treatment, continuously stirring for 1h, filtering, washing with deionized water once, and taking out to obtain a modified material for later use; the solution A comprises the following components in parts by weight: 4 parts of mercaptoacetic acid, 5 parts of ammonium thiosulfate, 14 parts of nano carbon powder, 6 parts of chitosan, 7 parts of bacterial cellulose, 15 parts of titanate coupling agent, 8 parts of sodium pyrophosphate, 2 parts of sodium dodecyl benzene sulfonate, 25 parts of n-butanol and 260 parts of deionized water;
(6) And (3) drying treatment: and (5) putting the modified material obtained in the step (5) into a vacuum drying oven for drying treatment, and taking out after 40min to obtain the finished product of the filler.
further, the crop straw in the step (1) is wheat straw.
Further, the particle diameter of the crushed material is controlled to be not more than 2cm after the crushing treatment in the step (2).
Further, the mass fraction of the hydrogen peroxide solution in the hydrogen peroxide solution during the oxidation treatment in the step (3) is 2.5%, and the pH value of the hydrogen peroxide solution is 10.
Further, the irradiation treatment in the step (4) is microwave irradiation treatment, during which the output power in the irradiation box is controlled to be 600W, and the irradiation box is in an oxygen-free environment.
Further, the rotation speed of stirring is controlled to be 1800 rpm during the stirring treatment in the step (5); the solution A is heated and kept at 55 ℃ during the soaking modification treatment.
Further, during the drying treatment in the step (6), the vacuum degree in the vacuum drying oven is controlled to be 1-5 Pa, and the drying temperature is 80 ℃.
Comparative example 1
This comparative example 1 was compared with example 1 in that the oxidation treatment operation in step (3) was omitted, except that the steps of the method were the same.
in order to compare the effects of the invention, the fillers prepared correspondingly in the above example 1 and the comparative example 1 are respectively added to prepare plastic products, wherein the raw materials of the plastic comprise the following components in parts by weight: 60 parts of polycarbonate, 25 parts of polyvinyl chloride, 15 parts of filler, 1.5 parts of colorant, 0.2 part of release agent and 0.4 part of antioxidant; processing according to the same conventional method, and finally performing performance test on the prepared plastic sample, wherein the specific result is as follows: the tensile strength of the sample of example 1 was 72.5MPa, the flexural strength was 80.2MPa, and the Izod impact strength was 95.6J/m; the tensile strength of the sample of comparative example 1 was 55.6MPa, the flexural strength was 61.4MPa, and the Izod impact strength was 72.2J/m; the plastic blank sample without the filler is 38.5MPa in tensile strength, 42.8MPa in bending strength and 59.7J/m in Ezhuo impact strength; when the tensile strength is tested, firstly, the plastic is injected into a test sample with ASTM D638 standard size, and then the tensile strength is tested according to the standard; when the bending strength is tested, plastic is firstly injected into a test sample with ASTM D790 standard size, and then the bending strength is tested according to the standard; the method comprises the steps of firstly, injection molding plastic into a test sample with an ASTM D256 standard size, and then, testing the Ezepine impact strength according to the standard.
Therefore, the filler prepared by the method can obviously improve the comprehensive quality of plastic products and has good use value.
Example 2
a preparation method of a filler for improving the environmental protection and the vividness of plastics comprises the following steps:
(1) Boiling water cooking treatment: putting crop straws into boiling water, heating, cooking for 33min, taking out, washing with clear water, and naturally drying for later use;
(2) And (3) crushing treatment: putting the crop straws treated in the step (1) into a crusher for crushing treatment, and taking out the crushed crop straws for later use;
(3) oxidation treatment: soaking the crushed material obtained in the step (2) into hydrogen peroxide solution for oxidation treatment for 4.5h, taking out and washing with deionized water to be neutral to obtain an oxidized material for later use;
(4) Irradiation treatment: putting the oxidized material obtained in the step (3) into an irradiation box for irradiation treatment, and taking out the oxidized material after 13min to obtain an irradiated material for later use;
(5) Soaking modification treatment: soaking the irradiated material obtained in the step (4) into the solution A for soaking modification treatment, continuously stirring for 1.6h, filtering, washing with deionized water once, and taking out to obtain a modified material for later use; the solution A comprises the following components in parts by weight: 5 parts of mercaptoacetic acid, 7 parts of ammonium thiosulfate, 15 parts of nano carbon powder, 8 parts of chitosan, 9 parts of bacterial cellulose, 17 parts of titanate coupling agent, 10 parts of sodium pyrophosphate, 4 parts of sodium dodecyl benzene sulfonate, 27 parts of n-butyl alcohol and 270 parts of deionized water;
(6) and (3) drying treatment: and (5) putting the modified material obtained in the step (5) into a vacuum drying oven for drying treatment, and taking out after 45min to obtain the finished product of the filler.
Further, the crop straws in the step (1) are rice straws.
further, the particle diameter of the crushed material is controlled to be not more than 2cm after the crushing treatment in the step (2).
further, the mass fraction of the hydrogen peroxide solution in the hydrogen peroxide solution during the oxidation treatment in the step (3) is 2.8%, and the pH value of the hydrogen peroxide solution is 10.
Further, the irradiation treatment in the step (4) is microwave irradiation treatment, during which the output power in the irradiation box is controlled to be 630W, and the irradiation box is in an oxygen-free environment.
Further, the rotation speed of stirring is controlled to be 1900 rpm during the stirring treatment in the step (5); the temperature of the solution A is kept at 58 ℃ by heating during the soaking modification treatment.
Further, during the drying treatment in the step (6), the vacuum degree in the vacuum drying oven is controlled to be 1-5 Pa, and the drying temperature is 82 ℃.
Comparative example 2
In this comparative example 2, as compared with example 1, the mercaptoacetic acid, ammonium thiosulfate and bacterial cellulose components in the solution a in the soaking modification treatment in the step (5) were omitted, except that the other steps of the method were the same.
In order to compare the effects of the invention, the fillers correspondingly prepared in the above example 2 and the comparative example 2 are respectively added to prepare plastic products, wherein the raw materials of the plastic comprise the following components in parts by weight: 60 parts of polycarbonate, 25 parts of polyvinyl chloride, 15 parts of filler, 1.5 parts of colorant, 0.2 part of release agent and 0.4 part of antioxidant; processing according to the same conventional method, and finally performing performance test on the prepared plastic sample, wherein the specific result is as follows: the tensile strength of the sample of example 2 was 79.4MPa, the flexural strength was 87.1MPa, and the Izod impact strength was 104.3J/m; the tensile strength of the sample of comparative example 2 was 62.4MPa, the flexural strength was 67.2MPa, and the Izod impact strength was 85.0J/m; the plastic blank sample without the filler is 41.1MPa in tensile strength, 43.9MPa in bending strength and 62.4J/m in Ezhuo impact strength; when the tensile strength is tested, firstly, the plastic is injected into a test sample with ASTM D638 standard size, and then the tensile strength is tested according to the standard; when the bending strength is tested, plastic is firstly injected into a test sample with ASTM D790 standard size, and then the bending strength is tested according to the standard; the method comprises the steps of firstly, injection molding plastic into a test sample with an ASTM D256 standard size, and then, testing the Ezepine impact strength according to the standard.
therefore, the filler prepared by the method can obviously improve the comprehensive quality of plastic products and has good use value.
example 3
A preparation method of a filler for improving the environmental protection and the vividness of plastics comprises the following steps:
(1) boiling water cooking treatment: putting crop straws into boiling water, heating, cooking for 35min, taking out, washing with clear water, and naturally drying for later use;
(2) And (3) crushing treatment: putting the crop straws treated in the step (1) into a crusher for crushing treatment, and taking out the crushed crop straws for later use;
(3) Oxidation treatment: soaking the crushed material obtained in the step (2) into hydrogen peroxide solution for oxidation treatment for 5h, taking out and washing with deionized water to be neutral to obtain an oxidized material for later use;
(4) Irradiation treatment: putting the oxidized material obtained in the step (3) into an irradiation box for irradiation treatment, and taking out the oxidized material after 15min to obtain an irradiated material for later use;
(5) Soaking modification treatment: soaking the irradiated material obtained in the step (4) into the solution A for soaking modification treatment, continuously stirring for 2 hours, filtering, washing with deionized water once, and taking out to obtain a modified material for later use; the solution A comprises the following components in parts by weight: 6 parts of mercaptoacetic acid, 8 parts of ammonium thiosulfate, 16 parts of nano carbon powder, 9 parts of chitosan, 10 parts of bacterial cellulose, 20 parts of titanate coupling agent, 12 parts of sodium pyrophosphate, 5 parts of sodium dodecyl benzene sulfonate, 30 parts of n-butyl alcohol and 280 parts of deionized water;
(6) And (3) drying treatment: and (5) putting the modified material obtained in the step (5) into a vacuum drying oven for drying treatment, and taking out after 50min to obtain the finished product of the filler.
Further, the crop straws in the step (1) are corn straws.
Further, the particle diameter of the crushed material is controlled to be not more than 2cm after the crushing treatment in the step (2).
Further, the mass fraction of the hydrogen peroxide solution in the hydrogen peroxide solution during the oxidation treatment in the step (3) is 3%, and the pH value of the hydrogen peroxide solution is 11.
further, the irradiation treatment in the step (4) is microwave irradiation treatment, during which the output power in the irradiation box is controlled to be 660W, and the irradiation box is in an oxygen-free environment.
further, the rotation speed of stirring is controlled to be 2000 r/min during the stirring treatment in the step (5); the temperature of the solution A is kept at 60 ℃ by heating during the soaking modification treatment.
Further, during the drying treatment in the step (6), the vacuum degree in the vacuum drying oven is controlled to be 1-5 Pa, and the drying temperature is 85 ℃.
comparative example 3
this comparative example 3 was compared with example 1, omitting the whole operation of the immersion modification treatment of step (5), except that the other process steps were the same.
In order to compare the effects of the invention, the fillers prepared correspondingly in the above example 3 and the comparative example 3 are respectively added to prepare plastic products, wherein the raw materials of the plastic comprise the following components in parts by weight: 60 parts of polycarbonate, 25 parts of polyvinyl chloride, 15 parts of filler, 1.5 parts of colorant, 0.2 part of release agent and 0.4 part of antioxidant; processing according to the same conventional method, and finally performing performance test on the prepared plastic sample, wherein the specific result is as follows: the tensile strength of the sample of example 3 was 80.6MPa, the flexural strength was 86.2MPa, and the Izod impact strength was 102.1J/m; the tensile strength of the sample of comparative example 3 was 53.7MPa, the flexural strength was 60.4MPa, and the Izod impact strength was 71.3J/m; the plastic blank sample without the filler has the tensile strength of 40.6MPa, the bending strength of 42.4MPa and the Ezhuo impact strength of 61.5J/m; when the tensile strength is tested, firstly, the plastic is injected into a test sample with ASTM D638 standard size, and then the tensile strength is tested according to the standard; when the bending strength is tested, plastic is firstly injected into a test sample with ASTM D790 standard size, and then the bending strength is tested according to the standard; the method comprises the steps of firstly, injection molding plastic into a test sample with an ASTM D256 standard size, and then, testing the Ezepine impact strength according to the standard.
Therefore, the filler prepared by the method can obviously improve the comprehensive quality of plastic products and has good use value.
Claims (7)
1. a preparation method of a filler for improving the environmental protection and the vividness of plastics is characterized by comprising the following steps:
(1) boiling water cooking treatment: putting crop straws into boiling water, heating and cooking for 30-35 min, taking out, washing with clear water, and naturally drying for later use;
(2) and (3) crushing treatment: putting the crop straws treated in the step (1) into a crusher for crushing treatment, and taking out the crushed crop straws for later use;
(3) Oxidation treatment: soaking the crushed material obtained in the step (2) into hydrogen peroxide solution for oxidation treatment for 4-5 h, taking out, washing with deionized water to be neutral, and obtaining an oxidized material for later use;
(4) Irradiation treatment: putting the oxidized material obtained in the step (3) into an irradiation box for irradiation treatment, and taking out the oxidized material after 10-15 min to obtain an irradiated material for later use;
(5) soaking modification treatment: soaking the irradiated material obtained in the step (4) into the solution A for soaking modification treatment, continuously stirring for 1-2 h, filtering, washing with deionized water once, and taking out to obtain a modified material for later use; the solution A comprises the following components in parts by weight: 4-6 parts of mercaptoacetic acid, 5-8 parts of ammonium thiosulfate, 14-16 parts of nano carbon powder, 6-9 parts of chitosan, 7-10 parts of bacterial cellulose, 15-20 parts of titanate coupling agent, 8-12 parts of sodium pyrophosphate, 2-5 parts of sodium dodecyl benzene sulfonate, 25-30 parts of n-butyl alcohol and 260-280 parts of deionized water;
(6) and (3) drying treatment: and (5) putting the modified material obtained in the step (5) into a vacuum drying oven for drying treatment, and taking out after 40-50 min to obtain the finished product filler.
2. the preparation method of the filler for improving the environmental friendliness and vividness of plastics according to claim 1, wherein the crop straw in the step (1) is any one of wheat straw, rice straw and corn straw.
3. the method as claimed in claim 1, wherein the particle diameter of the crushed material after the crushing treatment in step (2) is controlled to be not more than 2 cm.
4. The preparation method of the filler for improving the environmental friendliness and the vividness of the plastic according to claim 1, wherein the mass fraction of hydrogen peroxide in the hydrogen peroxide solution during the oxidation treatment in the step (3) is 2.5-3%, and the pH value of the hydrogen peroxide solution is 10-11.
5. The method for preparing the filler for improving the environmental protection and the vividness of plastics according to claim 1, wherein the irradiation treatment in the step (4) is microwave irradiation treatment, during which the output power in an irradiation box is controlled to be 600-660W, and the inside of the irradiation box is in an oxygen-free environment.
6. the method for preparing the filler for improving the environmental protection and the vividness of plastics according to claim 1, wherein the stirring speed in the stirring treatment in the step (5) is controlled to be 1800-2000 rpm; and heating the solution A during the soaking modification treatment to keep the temperature of the solution A at 55-60 ℃.
7. The method for preparing the filler for improving the environmental friendliness and the vividness of plastics according to claim 1, wherein the vacuum degree in the vacuum drying oven is controlled to be 1-5 Pa during the drying treatment in the step (6), and the drying temperature is controlled to be 80-85 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819039A (en) * | 2022-11-24 | 2023-03-21 | 龙岩市宝丽建材科技有限公司 | High-strength environment-friendly artistic micro-cement and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819039A (en) * | 2022-11-24 | 2023-03-21 | 龙岩市宝丽建材科技有限公司 | High-strength environment-friendly artistic micro-cement and preparation method thereof |
| CN115819039B (en) * | 2022-11-24 | 2024-01-19 | 龙岩市宝丽建材科技有限公司 | High-strength environment-friendly artistic micro-cement and preparation method thereof |
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