CN108276781A - A kind of production technology of plastics capable of being fast degraded - Google Patents
A kind of production technology of plastics capable of being fast degraded Download PDFInfo
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
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- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
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- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/00—Use of organic ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
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Abstract
The present invention relates to plastics arts, and in particular to a kind of production technology of plastics capable of being fast degraded, which includes the first step, prepares plastic grain；Second step prepares covering body；Third walks, covering body coating plastic particle, and plastics made from the production technology not only have preferable intensity and biodegradable, and can fast degradation, be conducive to the pressure for alleviating plastic garbage to city.
Description
Technical field
The present invention relates to plastics arts, and in particular to a kind of production technology of plastics capable of being fast degraded.
Background technology
It is known that plastics have the advantages that light, mechanical strength is good, chemical property is good, cheap and be widely used in society
Every field.Since plastics industry is too fast, and the processing method that used plastics are not appropriate, discarded plastics can only
It is eliminated by way of burning or burying, will produce the toxic gas of pollution environment and the noxious material of contaminated soil in this way,
Greatly pollution and pressure are brought to environment, is unfavorable for the sustainable use of plastic products.
Currently, people's developmental research plastics have shifted towards based on biodegradable plastic.Existing biodegradable plastic is main
With biodegradable plastics made of polyester type organic and natural degradable macromolecular polymeric.In practical application, biological it can drop
Plastics are solved in addition to the requirement for having biodegradability, it is also necessary to have preferable intensity, such as toughness, impact resilience, intensity is good
Biodegradable speed is not easy to fast degradation, that is, existing biodegradable plastics although have degradable performance,
Degradation speed is fast not enough, equally brings certain pressure to plastic garbage processing.
Invention content
For the prior art there are above-mentioned technical problem, the present invention provides a kind of production work of plastics capable of being fast degraded
Skill, not only degradation speed is fast for the plastics which makes, and the plastics also have the advantages that intensity is good.
To achieve the above object, the present invention provides following technical scheme：
A kind of production technology of plastics capable of being fast degraded is provided, is included the following steps,
The first step：Prepare plastic grain
(1) raw material of following parts by weight is weighed：
(2) formula ratio is pressed, pla-pcl and ethyl acetate are heated to mixing at 60~70 DEG C, are then cooled to 50~60
DEG C, it is subsequently added into the carboxymethyl starch of formula ratio, continues to stir evenly, obtains the first mixture；
(3) formula ratio is pressed, lubricant, plasticizer, foaming agent, initiator, antioxidant and first mixture are existed
It is stirred evenly at 50~60 DEG C, obtains the second mixture；
(4) by the second mixture extruding pelletization, grain size is made using the further pelletizing of pelleter in the particle of gained
For the plastic grain of 2~5mm；
Second step：Prepare covering body
(1) keratoprotein solution is prepared：
A, expanding treatment：Animal connective tissue is crushed using pulverizer, the connective tissue after crushing is swollen in sealer
Change 20~30s of processing, the temperature in sealer is 90~200 DEG C, and pressure is 0.3~0.6Mpa, obtains the conclusion of loose web-like
Tissue；
B, reduction treatment：Add water to the connective tissue of above-mentioned loose web-like and stir evenly, Na2S solution is then added, after
It is continuous to stir evenly, which is heated to fusing under conditions of pressure is 7.68~11.52Mpa, temperature is 70~150 DEG C,
The weight ratio of the connective tissue, the water and the Na2S solution is 1：1.5~2：0.5~1, it is molten to obtain keratoprotein
Liquid；
(2) keratoprotein phenol-formaldehyde resin modified is prepared
A, the raw material of following parts by weight is weighed
B, formula ratio is pressed, keratoprotein solution and phenolic resin are added in toluene solution and are uniformly mixed, is then added
The initiator of formula ratio simultaneously stirs evenly, and is subsequently added into the vinyl bis-stearamides of formula ratio, continues to stir at 50~60 DEG C
It mixes, obtains keratoprotein phenol-formaldehyde resin modified, which keeps the temperature at 50~60 DEG C, using as cladding
The covering body of the plastic grain, for use；
Third walks：Covering body coating plastic particle
(1) dispersant is added into the plastic grain, while by the keratoprotein phenol-formaldehyde resin modified 65~70
Heated at DEG C, make keratoprotein phenol-formaldehyde resin modified be in fluid state, then by the keratoprotein phenol-formaldehyde resin modified of fluid state with
Plastic grain added with dispersant mixes certain time under ultrasound condition, is subsequently added into crosslinking agent and continues to stir evenly,
The mixture of keratoprotein phenol-formaldehyde resin modified coating plastic particle is made, wherein the plastic grain and the keratoprotein
The weight ratio of phenol-formaldehyde resin modified is 1：2~3；
(2) mixture of above-mentioned keratoprotein phenol-formaldehyde resin modified coating plastic particle is put into screw extruder,
Melting extrusion is carried out at a temperature of 100~150 DEG C, then through cooling, air-dried processing, plastics capable of being fast degraded are made.
In above-mentioned technical proposal, the preparation method of the carboxymethyl starch is that starch first uses the basified places 0.5%NaOH
4~5h is managed, after washing, by etherifying reagent 2~3h of etherification reaction, the starch after etherificate is passed through into washing, drying and processing successively,
Obtain carboxymethyl starch.
In above-mentioned technical proposal, in the third step, the weight ratio of the dispersant and the plastic grain is 20：1
~5, the weight ratio of the crosslinking agent and the keratoprotein phenol-formaldehyde resin modified is 20：0.5~0.7.
In above-mentioned technical proposal, the crosslinking agent is by 5~8 parts of cumyl peroxides, 5~8 parts of peroxidating double 2,4 one
Dichloro-benzoyl and 10~16 parts of N, N'- methylene-bisacrylamides mixing composition.
In above-mentioned technical proposal, in third step, the keratoprotein phenol-formaldehyde resin modified of fluid state with added with dispersion
The plastic grain of agent mixes 25~40min under 80~100HZ ultrasound conditions.
In above-mentioned technical proposal, the lubricant is stearic acid.
In above-mentioned technical proposal, the plasticizer is diethyl phthalate, adipic acid dibutyl ester, sebacic acid dibutyl ester
In one kind or arbitrary two or more mixture
In above-mentioned technical proposal, the foaming agent is sodium sulfate of polyethenoxy ether of fatty alcohol, lauryl sodium sulfate, silicon tree
One kind in fat polyethers lotion or arbitrary two or more mixture.
In above-mentioned technical proposal, the initiator is potassium peroxydisulfate.
In above-mentioned technical proposal, the antioxidant is antioxidant 1010.
Beneficial effects of the present invention：
(1) production technology of a kind of plastics capable of being fast degraded of the invention, use pla-pcl and carboxymethyl starch for
Major ingredient, pla-pcl can be decomposed into CO2 and water in soil and water environment, and pla-pcl has preferable compatibility, can be with
High molecular polymer is made in carboxymethyl starch, in addition, the plastic grain that grain size is 2~5mm, grain is made in the high molecular polymer
The small plastic grain of diameter has larger specific surface area, can faster degrade.
(2) production technology of a kind of plastics capable of being fast degraded of the invention, the keratoprotein extracted in connective tissue are molten
Liquid, the component of the keratoprotein solution of gained are the active preferable alanine with carboxymethyl for being easy degradation respectively and can be with
The organic matter with sulfydryl with preferable intensity that organic matter preferably polymerize, polymerize system with phenolic resin by keratoprotein solution
Keratoprotein phenol-formaldehyde resin modified, so that keratoprotein phenol-formaldehyde resin modified have that intensity is good, degradation property is good and
The good advantage of adhesive property in this way can be steady using keratoprotein phenol-formaldehyde resin modified as the covering body for including plastic grain
Surely coating plastic particle, and have degradation property.
(3) production technology of a kind of plastics capable of being fast degraded of the invention, using keratoprotein phenol-formaldehyde resin modified packet
Cover the very small degradation plastic particle of grain size, due to keratoprotein phenol-formaldehyde resin modified using bond cladding mode with
Plastics combine, and when degradation, keratoprotein phenol-formaldehyde resin modified is because of the keratoprotein containing biomass, so as to rapidly degrade,
Then the plastic grain in keratoprotein phenol-formaldehyde resin modified can rapidly disperse, quickly with the haptoreaction of physicochemical environment,
To improve degradation speed.
(4) a kind of production technology of plastics capable of being fast degraded of the invention is by a series of strong process group of controllabilities
At, have the advantages that it is easily operated, be suitable for large-scale production.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1.
A kind of production technology of plastics capable of being fast degraded, includes the following steps in this implementation,
The first step：(1) prepare plastic grain, weigh pla-pcl 480g, carboxymethyl starch 240g, ethyl acetate 240g,
Lubricant 8g, plasticizer 8g, foaming agent 12g, initiator 5.6g, antioxidant 6.4g.
(2) formula ratio is pressed, pla-pcl and ethyl acetate are heated to mixing at 60 DEG C, are then cooled to 50 DEG C, then
The carboxymethyl starch of formula ratio is added, continues to stir evenly, obtains the first mixture；
(3) formula ratio is pressed, lubricant, plasticizer, foaming agent, initiator, antioxidant and first mixture are existed
It is stirred evenly at 50 DEG C, obtains the second mixture；
(4) by the second mixture extruding pelletization, grain size is made using the further pelletizing of pelleter in the particle of gained
For the plastic grain of 2~5mm；
Second step：Prepare covering body
(1) keratoprotein solution is prepared：
A, expanding treatment：Animal connective tissue is crushed using pulverizer, the connective tissue after crushing is swollen in sealer
Change processing 20s, the temperature in sealer is 90 DEG C, and pressure 0.3Mpa obtains the connective tissue of loose web-like；
B, reduction treatment：Add water to the connective tissue of above-mentioned loose web-like and stir evenly, Na is then added2S solution, after
It is continuous to stir evenly, which is heated to fusing under conditions of pressure is 7.68Mpa, temperature is 70 DEG C, the connective tissue,
The water and the Na2The weight ratio of S solution is 1：1.5：0.5, obtain keratoprotein solution；
(2) keratoprotein phenol-formaldehyde resin modified is prepared
A, the raw material of following parts by weight is weighed：Keratoprotein solution 240g, phenolic resin 480g, toluene solution 280g, draw
Send out agent 5.5g, vinyl bis-stearamides 3.9g；
B, formula ratio is pressed, keratoprotein solution and phenolic resin are added in toluene solution and are uniformly mixed, is then added
The initiator of formula ratio simultaneously stirs evenly, and is subsequently added into the vinyl bis-stearamides of formula ratio, continues to stir at 50 DEG C, obtain
To keratoprotein phenol-formaldehyde resin modified, which keeps the temperature at 50 DEG C, using as coating the plastics
The covering body of particle, for use；
Third walks：Covering body coating plastic particle
(1) dispersant is added into the plastic grain, while by the keratoprotein phenol-formaldehyde resin modified at 65 DEG C
Heating, it is in fluid state to make keratoprotein phenol-formaldehyde resin modified, then by the keratoprotein phenol-formaldehyde resin modified of fluid state and addition
There is the plastic grain of dispersant to mix certain time under ultrasound condition, be subsequently added into crosslinking agent and continue to stir evenly, is made
The mixture of keratoprotein phenol-formaldehyde resin modified coating plastic particle, wherein the plastic grain is modified with the keratoprotein
The weight ratio of phenolic resin is 1：2；
(2) mixture of above-mentioned keratoprotein phenol-formaldehyde resin modified coating plastic particle is put into screw extruder,
Melting extrusion is carried out at a temperature of 100 DEG C, then through cooling, air-dried processing, plastics capable of being fast degraded are made.
In the present embodiment, the preparation method of the carboxymethyl starch is that starch first uses the basified processing of 0.5%NaOH
4h after washing, is obtained by etherifying reagent 2~3h of etherification reaction by the starch after etherificate successively by washing, drying and processing
Carboxymethyl starch, carboxymethyl starch have carboxyl, can preferably polymerize with pla-pcl.
In the present embodiment, in the third step, the weight ratio of the dispersant and the plastic grain is 20：1, it is described
The weight ratio of crosslinking agent and the keratoprotein phenol-formaldehyde resin modified is 20：0.5.
In the present embodiment, the crosslinking agent is by 5 parts of cumyl peroxides, double 2,4 one dichloro-benzoyls of 5 parts of peroxidating
With 10 parts of N, N'- methylene-bisacrylamides mixing composition improves the cross-linking properties of crosslinking agent.
In the present embodiment, in third step, the keratoprotein phenol-formaldehyde resin modified of fluid state with added with dispersant
Plastic grain mixes 25min under 80HZ ultrasound conditions so that keratoprotein phenol-formaldehyde resin modified is preferably mixed with plastic grain
It closes.
In the present embodiment, the lubricant is stearic acid, and stearic acid belongs to in-lubricant, since plastic grain can be wrapped by
Body coats, and increases the switching performance of plastic grain and covering body using in-lubricant.
In the present embodiment, the plasticizer is in diethyl phthalate, adipic acid dibutyl ester, sebacic acid dibutyl ester
Mixture.
In the present embodiment, the foaming agent is that sodium sulfate of polyethenoxy ether of fatty alcohol, lauryl sodium sulfate, silicones are poly-
The mixture of ether.
In the present embodiment, the initiator is potassium peroxydisulfate.
In the present embodiment, the antioxidant is antioxidant 1010.
Embodiment 2.
A kind of production technology of plastics capable of being fast degraded, includes the following steps in this implementation,
The first step：(1) prepare plastic grain, weigh pla-pcl 500g, carboxymethyl starch 240g, ethyl acetate 300g,
Lubricant 7g, plasticizer 6.5g, foaming agent 8g, initiator 6g, antioxidant 6.4g.
(2) formula ratio is pressed, pla-pcl and ethyl acetate are heated to mixing at 70 DEG C, are then cooled to 60 DEG C, then
The carboxymethyl starch of formula ratio is added, continues to stir evenly, obtains the first mixture；
(3) formula ratio is pressed, lubricant, plasticizer, foaming agent, initiator, antioxidant and first mixture are existed
It is stirred evenly at 60 DEG C, obtains the second mixture；
(4) by the second mixture extruding pelletization, grain size is made using the further pelletizing of pelleter in the particle of gained
For the plastic grain of 2~5mm；
Second step：Prepare covering body
(1) keratoprotein solution is prepared：
A, expanding treatment：Animal connective tissue is crushed using pulverizer, the connective tissue after crushing is swollen in sealer
Change processing 30s, the temperature in sealer is 200 DEG C, and pressure 0.6Mpa obtains the connective tissue of loose web-like；
B, reduction treatment：Add water to the connective tissue of above-mentioned loose web-like and stir evenly, Na is then added2S solution, after
It is continuous to stir evenly, which is heated to fusing, the conclusion group under conditions of pressure is 11.52Mpa, temperature is 150 DEG C
It knits, the water and the Na2The weight ratio of S solution is 1：2：1, obtain keratoprotein solution；
(2) keratoprotein phenol-formaldehyde resin modified is prepared
A, the raw material of following parts by weight is weighed：Keratoprotein solution 300g, phenolic resin 480g, toluene solution 300g, draw
Send out agent 6g, vinyl bis-stearamides 4g；
B, formula ratio is pressed, keratoprotein solution and phenolic resin are added in toluene solution and are uniformly mixed, is then added
The initiator of formula ratio simultaneously stirs evenly, and is subsequently added into the vinyl bis-stearamides of formula ratio, continues to stir at 60 DEG C, obtain
To keratoprotein phenol-formaldehyde resin modified, which keeps the temperature at 60 DEG C, using as coating the plastics
The covering body of particle, for use；
Third walks：Covering body coating plastic particle
(1) dispersant is added into the plastic grain, while by the keratoprotein phenol-formaldehyde resin modified at 70 DEG C
Heating, it is in fluid state to make keratoprotein phenol-formaldehyde resin modified, then by the keratoprotein phenol-formaldehyde resin modified of fluid state and addition
There is the plastic grain of dispersant to mix certain time under ultrasound condition, be subsequently added into crosslinking agent and continue to stir evenly, is made
The mixture of keratoprotein phenol-formaldehyde resin modified coating plastic particle, wherein the plastic grain is modified with the keratoprotein
The weight ratio of phenolic resin is 1：3；
(2) mixture of above-mentioned keratoprotein phenol-formaldehyde resin modified coating plastic particle is put into screw extruder,
Melting extrusion is carried out at a temperature of 150 DEG C, then through cooling, air-dried processing, plastics capable of being fast degraded are made.
In the present embodiment, the preparation method of the carboxymethyl starch is that starch first uses the basified processing of 0.5%NaOH
After washing, carboxylic first is obtained by etherifying reagent etherification reaction 3h by the starch after etherificate successively by washing, drying and processing by 5h
Base starch, carboxymethyl starch have carboxyl, can preferably polymerize with pla-pcl.
In the present embodiment, in the third step, the weight ratio of the dispersant and the plastic grain is 20：5, it is described
The weight ratio of crosslinking agent and the keratoprotein phenol-formaldehyde resin modified is 20：0.7.
In the present embodiment, the crosslinking agent is by 8 parts of cumyl peroxides, double 2,4 one dichloro-benzoyls of 6 parts of peroxidating
With 15 parts of N, N'- methylene-bisacrylamides mixing composition improves the cross-linking properties of crosslinking agent.
In the present embodiment, in third step, the keratoprotein phenol-formaldehyde resin modified of fluid state with added with dispersant
Plastic grain mixes 40min under 100HZ ultrasound conditions so that keratoprotein phenol-formaldehyde resin modified is preferably mixed with plastic grain
It closes.
In the present embodiment, the lubricant is stearic acid, and stearic acid belongs to in-lubricant, since plastic grain can be wrapped by
Body coats, and increases the switching performance of plastic grain and covering body using in-lubricant.
In the present embodiment, the plasticizer is the mixture in diethyl phthalate, sebacic acid dibutyl ester.
In the present embodiment, the foaming agent be sodium sulfate of polyethenoxy ether of fatty alcohol, lauryl sodium sulfate mixture.
In the present embodiment, the initiator is potassium peroxydisulfate.
In the present embodiment, the antioxidant is antioxidant 1010.
Embodiment 3.
A kind of production technology of plastics capable of being fast degraded, includes the following steps in this implementation,
The first step：(1) prepare plastic grain, weigh pla-pcl 380g, carboxymethyl starch 300g, ethyl acetate 240g,
Lubricant 8g, plasticizer 9g, foaming agent 10g, initiator 6.5g, antioxidant 6g.
(2) formula ratio is pressed, pla-pcl and ethyl acetate are heated to mixing at 65 DEG C, are then cooled to 55 DEG C, then
The carboxymethyl starch of formula ratio is added, continues to stir evenly, obtains the first mixture；
(3) formula ratio is pressed, lubricant, plasticizer, foaming agent, initiator, antioxidant and first mixture are existed
It is stirred evenly at 55 DEG C, obtains the second mixture；
(4) by the second mixture extruding pelletization, grain size is made using the further pelletizing of pelleter in the particle of gained
For the plastic grain of 2~5mm；
Second step：Prepare covering body
(1) keratoprotein solution is prepared：
A, expanding treatment：Animal connective tissue is crushed using pulverizer, the connective tissue after crushing is swollen in sealer
Change processing 25s, the temperature in sealer is 150 DEG C, and pressure 0.5Mpa obtains the connective tissue of loose web-like；
B, reduction treatment：Add water to the connective tissue of above-mentioned loose web-like and stir evenly, Na is then added2S solution, after
It is continuous to stir evenly, which is heated to fusing under conditions of pressure is 11Mpa, temperature is 100 DEG C, the connective tissue,
The water and the Na2The weight ratio of S solution is 1：1.7：0.8, obtain keratoprotein solution；
(2) keratoprotein phenol-formaldehyde resin modified is prepared
A, the raw material of following parts by weight is weighed：Keratoprotein solution 280g, phenolic resin 400g, toluene solution 250g, draw
Send out agent 6.1g, vinyl bis-stearamides 5.1g；
B, formula ratio is pressed, keratoprotein solution and phenolic resin are added in toluene solution and are uniformly mixed, is then added
The initiator of formula ratio simultaneously stirs evenly, and is subsequently added into the vinyl bis-stearamides of formula ratio, continues to stir at 55 DEG C, obtain
To keratoprotein phenol-formaldehyde resin modified, which keeps the temperature at 55 DEG C, using as coating the plastics
The covering body of particle, for use；
Third walks：Covering body coating plastic particle
(1) dispersant is added into the plastic grain, while by the keratoprotein phenol-formaldehyde resin modified at 68 DEG C
Heating, it is in fluid state to make keratoprotein phenol-formaldehyde resin modified, then by the keratoprotein phenol-formaldehyde resin modified of fluid state and addition
There is the plastic grain of dispersant to mix certain time under ultrasound condition, be subsequently added into crosslinking agent and continue to stir evenly, is made
The mixture of keratoprotein phenol-formaldehyde resin modified coating plastic particle, wherein the plastic grain is modified with the keratoprotein
The weight ratio of phenolic resin is 1：2.5；
(2) mixture of above-mentioned keratoprotein phenol-formaldehyde resin modified coating plastic particle is put into screw extruder,
Melting extrusion is carried out at a temperature of 120 DEG C, then through cooling, air-dried processing, plastics capable of being fast degraded are made.
In the present embodiment, the preparation method of the carboxymethyl starch is that starch first uses 0.5%NaOH is basified to handle 4
~5h after washing, is obtained by etherifying reagent 2~3h of etherification reaction by the starch after etherificate successively by washing, drying and processing
To carboxymethyl starch, carboxymethyl starch has carboxyl, can preferably polymerize with pla-pcl.
In the present embodiment, in the third step, the weight ratio of the dispersant and the plastic grain is 20：3, it is described
The weight ratio of crosslinking agent and the keratoprotein phenol-formaldehyde resin modified is 20：0.6.
In the present embodiment, the crosslinking agent is by 8 parts of cumyl peroxides, double 2,4 one dichloro-benzoyls of 7 parts of peroxidating
With 15 parts of N, N'- methylene-bisacrylamides mixing composition improves the cross-linking properties of crosslinking agent.
In the present embodiment, in third step, the keratoprotein phenol-formaldehyde resin modified of fluid state with added with dispersant
Plastic grain mixes 30min under 90HZ ultrasound conditions so that keratoprotein phenol-formaldehyde resin modified is preferably mixed with plastic grain
It closes.
In the present embodiment, the lubricant is stearic acid, and stearic acid belongs to in-lubricant, since plastic grain can be wrapped by
Body coats, and increases the switching performance of plastic grain and covering body using in-lubricant.
In the present embodiment, the plasticizer is the mixture in diethyl phthalate, sebacic acid dibutyl ester.
In the present embodiment, the foaming agent is lauryl sodium sulfate, one kind in silicones polyethers lotion or arbitrary
Mixture.
In the present embodiment, the initiator is potassium peroxydisulfate.
In the present embodiment, the antioxidant is antioxidant 1010.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art answer
Work as understanding, technical scheme of the present invention can be modified or replaced equivalently, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (10)
1. a kind of production technology of plastics capable of being fast degraded, it is characterized in that：Include the following steps,
The first step：Prepare plastic grain
(1) raw material of following parts by weight is weighed：
50~60 parts of pla-pcl
20~30 parts of carboxymethyl starch
20~30 parts of ethyl acetate
0.5~1.0 part of lubricant
0.2~1.0 part of plasticizer
0.2~1.5 part of foaming agent
0.1~0.7 part of initiator
0.2~0.8 part of antioxidant；
(2) formula ratio is pressed, pla-pcl and ethyl acetate are heated to mixing at 60~70 DEG C, are then cooled to 50~60 DEG C,
It is subsequently added into the carboxymethyl starch of formula ratio, continues to stir evenly, obtains the first mixture；
(3) press formula ratio, by lubricant, plasticizer, foaming agent, initiator, antioxidant and first mixture 50~
It is stirred evenly at 60 DEG C, obtains the second mixture；
(4) by the second mixture extruding pelletization, for the particle of gained using the further pelletizing of pelleter, it is 2 that grain size, which is made,
The plastic grain of~5mm；
Second step：Prepare covering body
(1) keratoprotein solution is prepared：
A, expanding treatment：Using pulverizer crush animal connective tissue, by the connective tissue after crushing in sealer puffing place
20~30s is managed, the temperature in sealer is 90~200 DEG C, and pressure is 0.3~0.6Mpa, obtains the connective tissue of loose web-like；
B, reduction treatment：Add water to the connective tissue of above-mentioned loose web-like and stir evenly, Na2S solution is then added, continues to stir
It mixes uniformly, which is heated to fusing under conditions of pressure is 7.68~11.52Mpa, temperature is 70~150 DEG C, it is described
The weight ratio of connective tissue, the water and the Na2S solution is 1：1.5~2：0.5~1, obtain keratoprotein solution；
(2) keratoprotein phenol-formaldehyde resin modified is prepared
A, the raw material of following parts by weight is weighed
B, formula ratio is pressed, keratoprotein solution and phenolic resin are added in toluene solution and are uniformly mixed, formula is then added
The initiator of amount simultaneously stirs evenly, and is subsequently added into the vinyl bis-stearamides of formula ratio, continues to stir at 50~60 DEG C, obtain
To keratoprotein phenol-formaldehyde resin modified, which keeps the temperature at 50~60 DEG C, using as described in cladding
The covering body of plastic grain, for use；
Third walks：Covering body coating plastic particle
(1) dispersant is added into the plastic grain, while by the keratoprotein phenol-formaldehyde resin modified at 65~70 DEG C
Heating, it is in fluid state to make keratoprotein phenol-formaldehyde resin modified, then by the keratoprotein phenol-formaldehyde resin modified of fluid state and addition
There is the plastic grain of dispersant to mix certain time under ultrasound condition, be subsequently added into crosslinking agent and continue to stir evenly, is made
The mixture of keratoprotein phenol-formaldehyde resin modified coating plastic particle, wherein the plastic grain is modified with the keratoprotein
The weight ratio of phenolic resin is 1：2~3；
(2) mixture of above-mentioned keratoprotein phenol-formaldehyde resin modified coating plastic particle is put into screw extruder, 100~
Melting extrusion is carried out at a temperature of 150 DEG C, then through cooling, air-dried processing, plastics capable of being fast degraded are made.
2. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The carboxymethyl forms sediment
The preparation method of powder is that starch first uses 0.5%NaOH 4~5h of basified processing, after washing, passes through etherifying reagent etherification reaction
2~3h obtains carboxymethyl starch by the starch after etherificate successively by washing, drying and processing.
3. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The third step
In, the weight ratio of the dispersant and the plastic grain is 20：1~5, the crosslinking agent is modified phenol with the keratoprotein
The weight ratio of urea formaldehyde is 20：0.5~0.7.
4. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The crosslinking agent is
By 5~8 parts of cumyl peroxides, 5~8 parts of double 2,4 one dichloro-benzoyls of peroxidating and 10~16 parts of N, N'- di-2-ethylhexylphosphine oxides third
Acrylamide mixing composition.
5. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The third step
In, the keratoprotein phenol-formaldehyde resin modified of fluid state is with the plastic grain added with dispersant under 80~100HZ ultrasound conditions
Mix 25~40min.
6. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The lubricant is
Stearic acid.
7. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The plasticizer is
Diethyl phthalate, adipic acid dibutyl ester, one kind in sebacic acid dibutyl ester or arbitrary two or more mixture.
8. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The foaming agent is
Sodium sulfate of polyethenoxy ether of fatty alcohol, lauryl sodium sulfate, one kind in silicones polyethers lotion or arbitrary two or more
Mixture.
9. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：The initiator is
Potassium peroxydisulfate.
10. a kind of production technology of plastics capable of being fast degraded according to claim 1, it is characterized in that：It is described anti-oxidant
Agent is antioxidant 1010.
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| CN113481949A (en) * | 2020-12-31 | 2021-10-08 | 无锡德林海环保科技股份有限公司 | Floating wetland algae-blocking enclosure |
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