CN112048144A - Environment-friendly plastic and preparation method thereof - Google Patents
Environment-friendly plastic and preparation method thereof Download PDFInfo
- Publication number
- CN112048144A CN112048144A CN202010962599.2A CN202010962599A CN112048144A CN 112048144 A CN112048144 A CN 112048144A CN 202010962599 A CN202010962599 A CN 202010962599A CN 112048144 A CN112048144 A CN 112048144A
- Authority
- CN
- China
- Prior art keywords
- parts
- environment
- friendly plastic
- vinyl
- plant fiber
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L43/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium or a metal; Compositions of derivatives of such polymers
- C08L43/04—Homopolymers or copolymers of monomers containing silicon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Abstract
The invention discloses an environment-friendly plastic which is characterized by being prepared from the following raw materials in parts by weight: 15-25 parts of cinnamic acid modified plant fiber, 30-40 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 45-55 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantanediol monoacrylate copolymer, 1-2 parts of initiator, 4-6 parts of epoxy succinic acid and 5-8 parts of epoxy-terminated hyperbranched polyphosphate. The invention also provides a preparation method of the environment-friendly plastic. The environment-friendly plastic disclosed by the invention has the advantages of good comprehensive performance, good mechanical property, water resistance, flame retardance and oxidation resistance, complete degradation after being discarded, and small influence on the environment.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to an environment-friendly plastic and a preparation method thereof.
Background
In recent years, with the development of the field of polymer synthesis, plastics, which are one of common polymer materials, have been widely used, and have become indispensable synthetic materials in daily life. Plastics are materials obtained by synthesis or condensation polymerization of monomer raw materials, and are composed of synthetic resin and additives such as filler, plasticizer, stabilizer, lubricant, pigment, etc. Most plastics have the advantages of light weight, stable chemical property, no corrosion, good impact resistance, good insulating property and the like.
With the continuous increase of the plastic yield, the plastic brings convenience to people and also brings serious environmental pollution problems. Because the plastic has the characteristics of acid and alkali resistance, oxidation resistance, corrosion resistance and degradation resistance, the plastic cannot be rotted for hundreds of years after being buried and treated, and a large amount of toxic gas can be generated during combustion. Therefore, while the waste plastic recycling technology is researched, the degradable environment-friendly plastic becomes a hot spot of domestic and foreign research as a way for solving the problem of plastic waste most probably.
The environment-friendly plastics in the prior art are more in types, such as poly-aliphatic polyester, polylactic acid, microbial polyester and the like, but the plastics are difficult to synthesize and high in cost, so that the plastics are difficult to popularize and apply in a large amount in the market. In recent years, the research and development directions of environment-friendly plastics mainly focus on completely biodegradable plastic materials which are prepared from starch agricultural products such as corn, soybean and the like as main raw materials and have higher agricultural product content, however, the materials have the defects of high brittleness, water resistance, low tensile strength and the like, have higher consumption of the agricultural products, and are widely produced and used, which is not beneficial to the food safety problem of the human society at present; in addition, the environment-friendly plastic on the market has the defects of more or less high decomposition rate, oxidation resistance, weak impact resistance and strong water absorption.
Although the method for producing biodegradable plastics using activated sludge disclosed in chinese patent publication No. CN101469061 can also be implemented by excess sludge, which is finally converted into biodegradable plastics-polyhydroxyalkanoate, the process is complicated, difficult to control, and the difficulty of mass production is great.
Therefore, it is important to develop an environment-friendly plastic which has good comprehensive performance, mechanical properties, water resistance, flame retardance and oxidation resistance and can be completely degraded after being discarded.
Disclosure of Invention
In view of the above, the invention aims to provide an environment-friendly plastic and a preparation method thereof, wherein the preparation method has the advantages of simple process, low requirements on reaction conditions and equipment, wide raw material sources, high preparation efficiency, higher economic value, social value and ecological value, and suitability for continuous large-scale production; the prepared environment-friendly plastic has good comprehensive performance, good mechanical property, water resistance, flame retardance and oxidation resistance, can be completely degraded after being discarded, and has little influence on the environment.
In order to achieve the purpose, the invention adopts the technical scheme that:
the environment-friendly plastic is characterized by being prepared from the following raw materials in parts by weight: 15-25 parts of cinnamic acid modified plant fiber, 30-40 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 45-55 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantanediol monoacrylate copolymer, 1-2 parts of initiator, 4-6 parts of epoxy succinic acid and 5-8 parts of epoxy-terminated hyperbranched polyphosphate.
Preferably, the initiator is at least one of azobisisobutyronitrile and azobisisoheptonitrile.
Preferably, the preparation method of the cinnamic acid modified plant fiber comprises the following steps: adding the plant fiber and the cinnamic acid into an organic solvent, adding 4-dimethylaminopyridine and 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride into the organic solvent, stirring the mixture at the temperature of between 50 and 60 ℃ for reacting for 6 to 10 hours, precipitating the mixture in water, and drying the precipitated polymer in a vacuum drying oven at the temperature of between 80 and 90 ℃ to constant weight to obtain the cinnamic acid modified plant fiber.
Preferably, the mass ratio of the plant fiber, the cinnamic acid, the organic solvent, the 4-dimethylaminopyridine and the 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride is (3-5):1 (20-30): 0.8-1.2): 0.5.
Preferably, the organic solvent is any one of N, N-dimethylformamide, tetrahydrofuran, N-methylpyrrolidone and ethyl acetate; the plant fiber is natural plant fiber, specifically at least one of bamboo filament fiber, coconut fiber and oil palm fiber.
Preferably, the preparation method of the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer comprises the following steps: adding 2-vinyl pyrazine, methyl vinyl silafluorene, 1, 3-adamantane diol monoacrylate and azodiisoheptanonitrile into a high boiling point solvent, stirring and reacting for 4-6 hours at 65-75 ℃ in the atmosphere of nitrogen or inert gas, then precipitating in water, and drying to constant weight at 80-90 ℃ in a vacuum drying oven to obtain the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer.
Preferably, the mass ratio of the 2-vinyl pyrazine to the methylvinyl silicofluorene to the 1, 3-adamantanediol monoacrylate to the azodiisoheptanonitrile to the high-boiling-point solvent is 1 (1-2) to 1 (0.03-0.05) to (12-20).
Preferably, the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone; the inert gas is any one of helium, neon and argon; the preparation method of the epoxy-terminated hyperbranched polyphosphate refers to the following steps: chinese patent application No. 201810153507.9, example 8.
The invention also aims to provide a preparation method of the environment-friendly plastic, which is characterized by comprising the following steps: the raw materials are uniformly mixed according to the parts by weight to obtain a mixture, and then the mixture is transferred into a screw extruder to be extruded and granulated at the temperature of 185-plus-one 210 ℃, so that the environment-friendly plastic is obtained.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
(1) the preparation method of the environment-friendly plastic provided by the invention is simple and feasible, wide in source of the preparation raw materials, low in price, suitable for continuous large-scale production, and capable of realizing the simultaneous promotion of economic benefits, social benefits and ecological benefits.
(2) The environment-friendly plastic provided by the invention overcomes the defects of high synthesis difficulty, high cost, high brittleness, poor water resistance, low tensile strength, high decomposition rate, low oxidation resistance, low impact resistance and strong water absorption of the traditional environment-friendly plastic, and has the advantages of good comprehensive performance, good mechanical property, water resistance, flame retardance and oxidation resistance, complete degradation after being discarded and small influence on the environment.
(3) According to the environment-friendly plastic provided by the invention, the selected materials have little pollution to the environment, the plastic is easy to degrade after being discarded, the degraded product contains N, P and other nutrients, the organic matter of the soil can be increased, the soil fertility can be improved, the recycling of the discarded resources is realized while the environmental problem is solved, and the basic national policy requirement of sustainable development is met.
(4) The environmental protection plastic provided by the invention can improve the mechanical property of the material by adding the plant fiber material, and through the modification esterification reaction, cinnamic acid and benzene ring are introduced on the surface of the plant fiber material, so that the waterproof performance, the flame retardant performance and the weather resistance are further improved, and simultaneously, vinyl active sites are introduced, in the material forming stage, the active site can generate graft copolymerization reaction with vinyl beta-cyclodextrin quaternary ammonium salt, 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer, so that the components are connected together by chemical bonds to form a three-dimensional network structure, the comprehensive performance of the material is improved, wherein, quaternary ammonium salt groups on the vinyl beta-cyclodextrin quaternary ammonium salt are easy to be connected with carboxyl groups on the epoxy succinic acid by ionic bond through ion exchange reaction; epoxy groups on epoxy succinic acid and epoxy-terminated hyperbranched polyphosphate ester are easy to generate with active hydroxyl groups on vinyl beta-cyclodextrin quaternary ammonium salt and 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane glycol monoacrylate copolymer, so that all components are connected by chemical bonds to form an organic unified whole, the crosslinking degree is further improved, and the comprehensive performance is improved.
(5) According to the environment-friendly plastic provided by the invention, the synergistic effect of the cyclodextrin quaternary ammonium salt structure, the hyperbranched polyphosphate structure, the silafluorene and the adamantane structure enables the flame retardance, the weather resistance and the performance in use to be better in oxidation resistance stability, water resistance and heat resistance; phosphate is added in an end-epoxy hyperbranched polyphosphate structure, the epoxy group on the phosphate can enable the phosphate to be connected with other components in a chemical bond mode so as to improve comprehensive performance, and the phosphate exists in a hyperbranched structure so as to effectively improve solubility.
Detailed Description
In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
In the embodiment of the invention, the raw materials are all purchased commercially; the preparation method of the epoxy-terminated hyperbranched polyphosphate refers to the following steps: chinese patent application No. 201810153507.9, example 8.
Example 1
The environment-friendly plastic is characterized by being prepared from the following raw materials in parts by weight: 15 parts of cinnamic acid modified plant fiber, 30 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 45 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer, 1 part of azodiisobutyronitrile, 4 parts of epoxy succinic acid and 5 parts of epoxy-terminated hyperbranched polyphosphate.
The preparation method of the cinnamic acid modified plant fiber comprises the following steps: adding plant fiber and cinnamic acid into N, N-dimethylformamide, adding 4-dimethylaminopyridine and 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride into the N, N-dimethylformamide, stirring the mixture at the temperature of 50 ℃ for reacting for 6 hours, precipitating the mixture in water, and drying the precipitated polymer in a vacuum drying oven at the temperature of 80 ℃ to constant weight to obtain cinnamic acid modified plant fiber; the mass ratio of the plant fiber to the cinnamic acid to the N, N-dimethylformamide to the 4-dimethylaminopyridine to the 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride is 3:1:20:0.8: 0.5; the plant fiber is natural bamboo filament fiber.
The preparation method of the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer comprises the following steps: adding 2-vinyl pyrazine, methyl vinyl silafluorene, 1, 3-adamantane diol monoacrylate and azodiisoheptanonitrile into dimethyl sulfoxide, stirring and reacting for 4 hours at 65 ℃ in a nitrogen atmosphere, then precipitating in water, and then drying in a vacuum drying oven at 80 ℃ to constant weight to obtain a 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer; the mass ratio of the 2-vinyl pyrazine to the methylvinyl silafluorene to the 1, 3-adamantanediol monoacrylate to the azodiisoheptanonitrile to the dimethyl sulfoxide is 1:1:1:0.03: 12.
The preparation method of the environment-friendly plastic is characterized by comprising the following steps of: uniformly mixing the raw materials in parts by weight to obtain a mixture, transferring the mixture into a screw extruder, and extruding and granulating at 185 ℃ to obtain the environment-friendly plastic.
Example 2
The environment-friendly plastic is characterized by being prepared from the following raw materials in parts by weight: 17 parts of cinnamic acid modified plant fiber, 32 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 48 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer, 1.2 parts of azo-bis-iso-heptonitrile, 4.5 parts of epoxy succinic acid and 6 parts of epoxy-terminated hyperbranched polyphosphate.
The preparation method of the cinnamic acid modified plant fiber comprises the following steps: adding plant fiber and cinnamic acid into tetrahydrofuran, adding 4-dimethylaminopyridine and 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride into the tetrahydrofuran, stirring the mixture at 53 ℃ for reaction for 7 hours, precipitating the mixture in water, and drying the precipitated polymer in a vacuum drying oven at 83 ℃ to constant weight to obtain cinnamic acid modified plant fiber; the mass ratio of the plant fiber to the cinnamic acid to the tetrahydrofuran to the 1-ethyl- (3-dimethylaminopropyl) carbonyldiimine hydrochloride to the 4-dimethylaminopyridine to the 1-ethyl- (3-dimethylaminopropyl) carbonyldiimine hydrochloride is 3.5:1:23:0.9: 0.5; the plant fiber is natural coconut fiber.
The preparation method of the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer comprises the following steps: adding 2-vinyl pyrazine, methyl vinyl silafluorene, 1, 3-adamantanediol monoacrylate and azobisisoheptonitrile into N, N-dimethylformamide, stirring and reacting for 4.5 hours at 68 ℃ in a helium atmosphere, then precipitating in water, and then drying in a vacuum drying oven at 83 ℃ to constant weight to obtain a 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantanediol monoacrylate copolymer; the mass ratio of the 2-vinyl pyrazine to the methylvinyl silafluorene to the 1, 3-adamantanediol monoacrylate to the azodiisoheptanonitrile to the N, N-dimethylformamide is 1:1.3:1:0.035: 13.
The invention also aims to provide a preparation method of the environment-friendly plastic, which is characterized by comprising the following steps: uniformly mixing the raw materials in parts by weight to obtain a mixture, transferring the mixture into a screw extruder, and extruding and granulating at 193 ℃ to obtain the environment-friendly plastic.
Example 3
The environment-friendly plastic is characterized by being prepared from the following raw materials in parts by weight: 20 parts of cinnamic acid modified plant fiber, 35 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 50 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer, 1.5 parts of azodiisobutyronitrile, 5 parts of epoxy succinic acid and 6.5 parts of epoxy-terminated hyperbranched polyphosphate.
The preparation method of the cinnamic acid modified plant fiber comprises the following steps: adding plant fiber and cinnamic acid into N-methylpyrrolidone, adding 4-dimethylaminopyridine and 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride into the N-methylpyrrolidone, stirring the mixture at the temperature of 55 ℃ for reacting for 8 hours, precipitating the mixture in water, and drying the precipitated polymer in a vacuum drying oven at the temperature of 85 ℃ to constant weight to obtain cinnamic acid modified plant fiber; the mass ratio of the plant fiber to the cinnamic acid to the N-methylpyrrolidone to the 4-dimethylaminopyridine to the 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride is 4:1:25:1: 0.5; the plant fiber is natural oil palm fiber.
The preparation method of the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer comprises the following steps: adding 2-vinyl pyrazine, methyl vinyl silafluorene, 1, 3-adamantanediol monoacrylate and azodiisoheptanonitrile into N, N-dimethylacetamide, stirring and reacting for 5 hours at 70 ℃ in the atmosphere of neon, then precipitating in water, and drying in a vacuum drying oven at 85 ℃ to constant weight to obtain a 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantanediol monoacrylate copolymer; the mass ratio of the 2-vinyl pyrazine to the methylvinyl silafluorene to the 1, 3-adamantanediol monoacrylate to the azodiisoheptanonitrile to the N, N-dimethylacetamide is 1:1.5:1:0.04: 16.
The preparation method of the environment-friendly plastic is characterized by comprising the following steps of: uniformly mixing the raw materials in parts by weight to obtain a mixture, transferring the mixture into a screw extruder, and extruding and granulating at the temperature of 200 ℃ to obtain the environment-friendly plastic.
Example 4
The environment-friendly plastic is characterized by being prepared from the following raw materials in parts by weight: 23 parts of cinnamic acid modified plant fiber, 38 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 53 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantanediol monoacrylate copolymer, 1.8 parts of initiator, 5.5 parts of epoxy succinic acid and 7 parts of epoxy-terminated hyperbranched polyphosphate; the initiator is formed by mixing azodiisobutyronitrile and azodiisoheptonitrile according to the mass ratio of 3: 5.
The preparation method of the cinnamic acid modified plant fiber comprises the following steps: adding the plant fiber and the cinnamic acid into ethyl acetate, adding 4-dimethylaminopyridine and 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride into the ethyl acetate, stirring the mixture at 58 ℃ for reaction for 9 hours, precipitating the mixture in water, and drying the precipitated polymer in a vacuum drying oven at 88 ℃ to constant weight to obtain the cinnamic acid modified plant fiber; the mass ratio of the plant fiber to the cinnamic acid to the ethyl acetate to the 4-dimethylaminopyridine to the 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride is 4.5:1:28:1.1: 0.5; the plant fiber is natural bamboo filament fiber.
The preparation method of the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer comprises the following steps: adding 2-vinyl pyrazine, methyl vinyl silafluorene, 1, 3-adamantane diol monoacrylate and azodiisoheptanonitrile into a high boiling point solvent, stirring and reacting for 5.5 hours at 73 ℃ in an argon atmosphere, then precipitating in water, and then drying in a vacuum drying oven at 88 ℃ to constant weight to obtain a 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer; the mass ratio of the 2-vinyl pyrazine to the methylvinyl silafluorene to the 1, 3-adamantanediol monoacrylate to the azodiisoheptanonitrile to the high-boiling-point solvent is 1:1.8:1:0.045: 18; the high boiling point solvent is formed by mixing dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone according to a mass ratio of 1:2:3: 2.
The preparation method of the environment-friendly plastic is characterized by comprising the following steps of: uniformly mixing the raw materials in parts by weight to obtain a mixture, transferring the mixture into a screw extruder, and extruding and granulating at the temperature of 203 ℃ to obtain the environment-friendly plastic.
Example 5
The environment-friendly plastic is characterized by being prepared from the following raw materials in parts by weight: 25 parts of cinnamic acid modified plant fiber, 40 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 55 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer, 2 parts of azodiisoheptanonitrile, 6 parts of epoxy succinic acid and 8 parts of epoxy-terminated hyperbranched polyphosphate.
The preparation method of the cinnamic acid modified plant fiber comprises the following steps: adding the plant fiber and the cinnamic acid into ethyl acetate, adding 4-dimethylaminopyridine and 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride into the ethyl acetate, stirring the mixture at the temperature of 60 ℃ for reaction for 10 hours, precipitating the mixture in water, and drying the precipitated polymer in a vacuum drying oven at the temperature of 90 ℃ to constant weight to obtain the cinnamic acid modified plant fiber; the mass ratio of the plant fiber to the cinnamic acid to the ethyl acetate to the 4-dimethylaminopyridine to the 1-ethyl- (3-dimethylaminopropyl) carbonyldiimine hydrochloride is 5:1:30:1.2: 0.5; the vegetable fiber is natural vegetable fiber, and specifically is formed by mixing bamboo filament fiber, coconut fiber and oil palm fiber according to the mass ratio of 1:3: 5.
The preparation method of the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer comprises the following steps: adding 2-vinyl pyrazine, methyl vinyl silafluorene, 1, 3-adamantane diol monoacrylate and azodiisoheptanonitrile into N-methyl pyrrolidone, stirring and reacting for 6 hours at 75 ℃ in a nitrogen atmosphere, then precipitating in water, and then drying in a vacuum drying oven at 90 ℃ to constant weight to obtain a 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer; the mass ratio of the 2-vinyl pyrazine to the methylvinyl silafluorene to the 1, 3-adamantanediol monoacrylate to the azodiisoheptanonitrile to the N-methylpyrrolidone is 1:2:1:0.05: 20.
The preparation method of the environment-friendly plastic is characterized by comprising the following steps of: uniformly mixing the raw materials in parts by weight to obtain a mixture, transferring the mixture into a screw extruder, and extruding and granulating at the temperature of 210 ℃ to obtain the environment-friendly plastic.
Comparative example 1
The present example provides an environmentally friendly plastic, which has the same formulation and preparation method as example 1, except that no cinnamic acid modified plant fiber is added.
Comparative example 2
This example provides an environmentally friendly plastic having the same formulation and preparation as example 1, except that no vinyl β -cyclodextrin quaternary ammonium salt was added.
Comparative example 3
The present example provides an environment-friendly plastic, which has the same formulation and preparation method as example 1, except that no epoxy-terminated hyperbranched polyphosphate is added.
Comparative example 4
This example provides an environmentally friendly plastic having the same formulation and preparation as example 1, except that no epoxy succinic acid was added.
Comparative example 5
This example provides an environmentally friendly plastic, which has the same formulation and preparation method as example 1, except that 1, 3-adamantanediol monoacrylate is not added during the preparation of the 2-vinylpyrazine/methylvinylsilfluorene/1, 3-adamantanediol monoacrylate copolymer.
Comparative example 6
This example provides an environmentally friendly plastic, which has the same formulation and preparation method as example 1, except that 2-vinyl pyrazine is not added in the preparation process of the 2-vinyl pyrazine/methylvinyl silafluorene/1, 3-adamantanediol monoacrylate copolymer.
In order to further illustrate the beneficial technical effects of the embodiments of the present invention, the environmental protection plastics described in the embodiments 1-5 and the comparative examples 1-6 were subjected to the related performance tests, the test methods and the test results are shown in table 1.
TABLE 1
As can be seen from Table 1, the environmentally friendly plastic disclosed in the examples of the present invention has better mechanical properties and flame retardancy, which are the result of the synergistic effect of the raw materials.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The environment-friendly plastic is characterized by being prepared from the following raw materials in parts by weight: 15-25 parts of cinnamic acid modified plant fiber, 30-40 parts of vinyl beta-cyclodextrin quaternary ammonium salt, 45-55 parts of 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantanediol monoacrylate copolymer, 1-2 parts of initiator, 4-6 parts of epoxy succinic acid and 5-8 parts of epoxy-terminated hyperbranched polyphosphate.
2. The environment-friendly plastic as claimed in claim 1, wherein the initiator is at least one of azobisisobutyronitrile and azobisisoheptonitrile.
3. The environment-friendly plastic as claimed in claim 1, wherein the preparation method of the cinnamic acid modified plant fiber comprises the following steps: adding the plant fiber and the cinnamic acid into an organic solvent, adding 4-dimethylaminopyridine and 1-ethyl- (3-dimethylaminopropyl) carbodiimide hydrochloride into the organic solvent, stirring the mixture at the temperature of between 50 and 60 ℃ for reacting for 6 to 10 hours, precipitating the mixture in water, and drying the precipitated polymer in a vacuum drying oven at the temperature of between 80 and 90 ℃ to constant weight to obtain the cinnamic acid modified plant fiber.
4. The environment-friendly plastic as claimed in claim 3, wherein the mass ratio of the plant fiber, the cinnamic acid, the organic solvent, the 4-dimethylaminopyridine and the 1-ethyl- (3-dimethylaminopropyl) carbonyldiimine hydrochloride is (3-5):1 (20-30): 0.8-1.2): 0.5.
5. The environment-friendly plastic as claimed in claim 3, wherein the organic solvent is any one of N, N-dimethylformamide, tetrahydrofuran, N-methylpyrrolidone and ethyl acetate; the plant fiber is natural plant fiber, specifically at least one of bamboo filament fiber, coconut fiber and oil palm fiber.
6. The environmental-friendly plastic as claimed in claim 1, wherein the preparation method of the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer comprises the following steps: adding 2-vinyl pyrazine, methyl vinyl silafluorene, 1, 3-adamantane diol monoacrylate and azodiisoheptanonitrile into a high boiling point solvent, stirring and reacting for 4-6 hours at 65-75 ℃ in the atmosphere of nitrogen or inert gas, then precipitating in water, and drying to constant weight at 80-90 ℃ in a vacuum drying oven to obtain the 2-vinyl pyrazine/methyl vinyl silafluorene/1, 3-adamantane diol monoacrylate copolymer.
7. The environment-friendly plastic as claimed in claim 6, wherein the mass ratio of the 2-vinyl pyrazine, the methylvinyl silafluorene, the 1, 3-adamantanediol monoacrylate, the azobisisoheptonitrile and the high-boiling-point solvent is 1 (1-2) to 1 (0.03-0.05) to (12-20).
8. The environment-friendly plastic as claimed in claim 6, wherein the high boiling point solvent is at least one of dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide and N-methylpyrrolidone; the inert gas is any one of helium, neon and argon.
9. The environment-friendly plastic as claimed in any one of claims 1 to 8, wherein the preparation method of the environment-friendly plastic comprises the following steps: the raw materials are uniformly mixed according to the parts by weight to obtain a mixture, and then the mixture is transferred into a screw extruder to be extruded and granulated at the temperature of 185-plus-one 210 ℃, so that the environment-friendly plastic is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962599.2A CN112048144A (en) | 2020-09-14 | 2020-09-14 | Environment-friendly plastic and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010962599.2A CN112048144A (en) | 2020-09-14 | 2020-09-14 | Environment-friendly plastic and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112048144A true CN112048144A (en) | 2020-12-08 |
Family
ID=73611087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010962599.2A Withdrawn CN112048144A (en) | 2020-09-14 | 2020-09-14 | Environment-friendly plastic and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112048144A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115141451A (en) * | 2022-08-24 | 2022-10-04 | 宁波塑之华塑化有限公司 | High-flame-retardancy polypropylene composite material and preparation method thereof |
-
2020
- 2020-09-14 CN CN202010962599.2A patent/CN112048144A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115141451A (en) * | 2022-08-24 | 2022-10-04 | 宁波塑之华塑化有限公司 | High-flame-retardancy polypropylene composite material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102070891B (en) | Polyester composite filled with lignin and preparation method thereof | |
| CN104693707A (en) | Polylactic acid/starch/fibrilia bio-based degradable composite material and preparation method thereof | |
| CN112961474B (en) | Preparation method of polylactic acid/epoxy vegetable oil all-bio-based composite material | |
| CN108948690B (en) | Polylactic acid-lignin-starch composite material and preparation method thereof | |
| CN106832807A (en) | A kind of controllable full-degradable mulch film of cellulose enhancing starch and preparation method thereof | |
| CN111471285B (en) | Epoxidized lignin modified biodegradable film and preparation method thereof | |
| CN103044872A (en) | Polylactic acid composition | |
| Zhu et al. | Modification of lignin with silane coupling agent to improve the interface of poly (L-lactic) acid/lignin composites | |
| CN108003645A (en) | A kind of complete biodegradable stalk injection-moulded plastic and preparation method thereof | |
| CN112778723A (en) | Starch-based degradable desorption tube material and preparation method thereof | |
| CN104119660A (en) | Method for preparing modified polycarbonate sub-lactone material | |
| CN111978691A (en) | Biodegradable mulching film and preparation method thereof | |
| CN104194287A (en) | Modified poly-adipic acid/butylene terephthalate composite material containing coconut shell flour and preparation method thereof | |
| CN104910603A (en) | Carbon-dioxide-base polymer/modified starch degradable agricultural mulching film and preparation method thereof | |
| CN102443196B (en) | Radiation modified starch biological degrading material and preparation method thereof | |
| CN111205604A (en) | Ultrathin high-strength high-toughness biodegradable mulching film material and film, and preparation method and application thereof | |
| CN113234304A (en) | Biodegradable film material and preparation method of film | |
| CN112048144A (en) | Environment-friendly plastic and preparation method thereof | |
| CN110922730A (en) | Modified polylactic acid and preparation method thereof | |
| CN107022177A (en) | A kind of polylactic acid/starch/powder of straw Biobased degradable composite material and preparation method thereof | |
| CN111234484B (en) | Full-bio-based degradable polylactic acid/starch composite material and preparation method thereof | |
| CN112625304A (en) | Novel high-starch-filled PBAT and preparation method thereof | |
| CN104017348A (en) | Polypropylene carbonate modified composite material and preparation method thereof | |
| CN116285255A (en) | Bamboo powder biodegradable material taking succinic acid and butanediol as precursors and preparation method thereof | |
| CN109401245A (en) | A kind of degradable environment-friendly material |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201208 |
|
| WW01 | Invention patent application withdrawn after publication |