CN109233233A - A kind of easy breakdown type foamed plastics and production technology - Google Patents
A kind of easy breakdown type foamed plastics and production technology Download PDFInfo
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- CN109233233A CN109233233A CN201810967675.1A CN201810967675A CN109233233A CN 109233233 A CN109233233 A CN 109233233A CN 201810967675 A CN201810967675 A CN 201810967675A CN 109233233 A CN109233233 A CN 109233233A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/02—Cellulose; Modified cellulose
Abstract
The invention discloses a kind of easy breakdown type foamed plastics and production technologies, foamed plastics includes polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent, fire retardant and water, the component proportion of above-mentioned raw materials is polyhydroxyalkanoate 30 ~ 37%, precipitated calcium carbonate 8 ~ 13%, cellulose 8 ~ 12%, photosensitizer 6 ~ 10%, plasticizer 7 ~ 11%, foaming agent 6 ~ 11%, nucleating agent 5 ~ 9%, fire retardant 4 ~ 8% and water 10 ~ 15%；Production technology includes the following steps: step 1, the pretreatment of raw material；Step 2, prefoam processing；Step 3, maturation process；The present invention, polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent, fire retardant and water are chosen as raw material, when use, it can be convenient for decomposition, plastic pollution is avoided, there is flame retardant effect, during production, by curing to raw material, the quality of foamed plastics is substantially increased.
Description
Technical field
The present invention relates to foam technology field, specially a kind of easy breakdown type foamed plastics and production technology.
Background technique
Foamed plastics, also known as cellular plastic are one kind height formed in solid plastic by bulk gas micropore dispersion
Molecular material, and dielectric properties are better than matrix resin, have many uses；Foamed plastics in the prior art, not due to foamed plastics
It can decompose, seriously exacerbate plastic pollution, moreover, foamed plastics does not have flame retardant effect, production work in the prior art yet
Skill, it is poor to the maturation process effect of foamed plastics during production, therefore, design a kind of easy breakdown type foamed plastics
And production technology is necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of easy breakdown type foamed plastics and production technologies, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of easy breakdown type foamed plastics, including polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
The component proportion of foaming agent, nucleating agent, fire retardant and water, above-mentioned raw materials is polyhydroxyalkanoate 30 ~ 37%, lightweight carbonic acid
It is calcium 8 ~ 13%, cellulose 8 ~ 12%, photosensitizer 6 ~ 10%, plasticizer 7 ~ 11%, foaming agent 6 ~ 11%, nucleating agent 5 ~ 9%, fire-retardant
Agent 4 ~ 8% and water 10 ~ 15%.
A kind of production technology of easy breakdown type foamed plastics, includes the following steps: step 1, the pretreatment of raw material；Step
Two, prefoam processing；Step 3, maturation process；Step 4, compression molding；Water is removed in step 5, drying；Step 6, punching；Step
Rapid seven, test package；
Wherein in above-mentioned step one, choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Impurity in raw material is rejected, is made during choosing raw material as raw material by foaming agent, nucleating agent, fire retardant and water
It obtains and does not contain impurity in raw material, according to polyhydroxyalkanoate 30 ~ 37%, precipitated calcium carbonate 8 ~ 13%, cellulose 8 ~ 12%, light
Quick dose 6 ~ 10%, the ratio of plasticizer 7 ~ 11%, foaming agent 6 ~ 11%, nucleating agent 5 ~ 9%, fire retardant 4 ~ 8% and water 10 ~ 15%
It is prepared；
Wherein in above-mentioned step two, by polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, fire retardant and water
It is passed through in blender and is stirred, so that raw material stirs evenly, and the mixing bead after stirring is carried out in hot water or steam
Prefoam is passed through in pre-foaming machine and carries out heating pressurized treatments, and successively add into pre-foaming machine plasticizer, foaming agent and at
Core agent makes pre-expanded particles reexpansion and mutual clinkering, so that polyhydroxyalkanoate forms pearl expander；
Wherein in above-mentioned step three, the pearl expander after foaming is placed into a period of time progress nature in air
Curing, so that air penetrates into the inside of pearl expander, the prefoaming beading after curing naturally should be stored in closed container,
The volatilization of foaming agent is reduced, to guarantee its swelliong power；
It wherein in above-mentioned step four, is pressed and molded using foam slab machine, before the forming first toward foamed plastics
It is passed through the heating steam of 0.1 ~ 0.2MPa in molding machine, after mold is preheated, opens gas outlet, will be sent out in advance with pneumatic transmission method
It steeps in particle injection mold cavity, is closed gas outlet, the steam of 0.1 ~ 0.2 MPa is passed through in vaporium, mold is carried out high
Temperature heating, so that the intracavitary pre-expanded particles of type are integrated with regard to expansion bonding, steam off valve simultaneously keeps 1 ~ 2min, then leads to
Cooling water finally demoulds；
Wherein in above-mentioned step five, the moisture in foamed plastics after compression molding is leading to cooling water after being evaporated out
It is condensed again in the process, plastic pellet should be dried, moisture is removed, until not occurring filamentary silver in foamed plastics, dried
Dry process, drying effect is closely related with drying time, when temperature is low, can extend drying time, when temperature is high, can shorten baking
The dry time；
Wherein in above-mentioned step six, foamed plastics obtained in step 5 is subjected to shear forming according to use demand,
During shearing, so that the shear surface of foamed plastics is smooth；
Wherein in above-mentioned step seven, foamed plastics finished product obtained in step 6 is tested, foamed plastics should be made
Surface no marking, appearance are whole without breakage, and the foamed plastics finished product of quality inspection qualification is carried out packing and storing.
According to the above technical scheme, the polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Foaming agent, nucleating agent, fire retardant and water component proportion take respectively: it is polyhydroxyalkanoate 34%, precipitated calcium carbonate 10%, fine
Dimension element 9%, photosensitizer 7%, plasticizer 8%, foaming agent 7%, nucleating agent 7%, fire retardant 5% and water 13%.
According to the above technical scheme, the polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Foaming agent, nucleating agent, fire retardant and water component proportion take respectively: it is polyhydroxyalkanoate 36%, precipitated calcium carbonate 9%, fine
Dimension element 8%, photosensitizer 6%, plasticizer 10%, foaming agent 6%, nucleating agent 6%, fire retardant 4% and water 15%.
According to the above technical scheme, the polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Foaming agent, nucleating agent, fire retardant and water component proportion take respectively: it is polyhydroxyalkanoate 31%, precipitated calcium carbonate 11%, fine
Dimension element 10%, photosensitizer 8%, plasticizer 7%, foaming agent 8%, nucleating agent 8%, fire retardant 7% and water 10%.
According to the above technical scheme, in the step 1, photosensitizer is the organic compound or salt of a kind of transition metal.
According to the above technical scheme, in the step 1, foaming agent is a kind of flaxen crystalline powder.
According to the above technical scheme, in the step 1, fire retardant is a kind of tetrabromobisphenol A fire retardant.
According to the above technical scheme, in the step 3, the standing time of curing is 4-8h, and the environment temperature of curing is
20-25℃。
According to the above technical scheme, in the step 4, the preheating time of mold is 0.5 min, the heating temperature of mold
Degree is 100-150 DEG C.
According to the above technical scheme, in the step 5, the temperature of drying is 85-130 DEG C.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent,
Fire retardant and water are as raw material, and polyhydroxyalkanoate has degradable characteristic, and precipitated calcium carbonate can be improved poly- hydroxyl rouge
The toughness of fat acid esters, photosensitizer are the organic compound or salt of a kind of transition metal, can be under illumination condition, to foamed plastics
It is decomposed, cellulose can result in high polymer chain rupture, molecular weight and molecular weight, to decompose to foam, fire retardant is one kind
Tetrabromobisphenol A fire retardant can have certain flame retardant effect；
2. the pearl expander after foaming is placed a period of time progress nature curing in air, so that air penetrates into
To the inside of pearl expander, the prefoaming beading after curing naturally should be stored in closed container, reduce the volatilization of foaming agent,
To guarantee its swelliong power, by maturation process, further dilatancy of the prefoaming beading in forming process, bead can be improved
Between the elasticity of clinkering and bead, be conducive to improve foamed plastics quality.
Detailed description of the invention
Fig. 1 is the production technological process of easy breakdown type foamed plastics of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution:
Embodiment 1:
A kind of easy breakdown type foamed plastics, including polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
The component proportion of foaming agent, nucleating agent, fire retardant and water, above-mentioned raw materials is polyhydroxyalkanoate 34%, precipitated calcium carbonate
10%, cellulose 9%, photosensitizer 7%, plasticizer 8%, foaming agent 7%, nucleating agent 7%, fire retardant 5% and water 13%.
A kind of production technology of easy breakdown type foamed plastics, includes the following steps: step 1, the pretreatment of raw material；Step
Two, prefoam processing；Step 3, maturation process；Step 4, compression molding；Water is removed in step 5, drying；Step 6, punching；Step
Rapid seven, test package；
Wherein in above-mentioned step one, choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Impurity in raw material is rejected, is made during choosing raw material as raw material by foaming agent, nucleating agent, fire retardant and water
Impurity is not contained in raw material, according to polyhydroxyalkanoate 34%, precipitated calcium carbonate 10%, cellulose 9%, photosensitizer 7%,
Plasticizer 8%, foaming agent 7%, nucleating agent 7%, fire retardant 5% and water 13% ratio prepared；
Wherein in above-mentioned step two, by polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, fire retardant and water
It is passed through in blender and is stirred, so that raw material stirs evenly, and the mixing bead after stirring is carried out in hot water or steam
Prefoam is passed through in pre-foaming machine and carries out heating pressurized treatments, and successively add into pre-foaming machine plasticizer, foaming agent and at
Core agent makes pre-expanded particles reexpansion and mutual clinkering, so that polyhydroxyalkanoate forms pearl expander；
Wherein in above-mentioned step three, the pearl expander after foaming is placed into a period of time progress nature in air
Curing, so that air penetrates into the inside of pearl expander, the prefoaming beading after curing naturally should be stored in closed container,
The volatilization of foaming agent is reduced, to guarantee its swelliong power；
It wherein in above-mentioned step four, is pressed and molded using foam slab machine, before the forming first toward foamed plastics
It is passed through the heating steam of 0.1 ~ 0.2MPa in molding machine, after mold is preheated, opens gas outlet, will be sent out in advance with pneumatic transmission method
It steeps in particle injection mold cavity, is closed gas outlet, the steam of 0.1 ~ 0.2 MPa is passed through in vaporium, mold is carried out high
Temperature heating, so that the intracavitary pre-expanded particles of type are integrated with regard to expansion bonding, steam off valve simultaneously keeps 1 ~ 2min, then leads to
Cooling water finally demoulds；
Wherein in above-mentioned step five, the moisture in foamed plastics after compression molding is leading to cooling water after being evaporated out
It is condensed again in the process, plastic pellet should be dried, moisture is removed, until not occurring filamentary silver in foamed plastics, dried
Dry process, drying effect is closely related with drying time, when temperature is low, can extend drying time, when temperature is high, can shorten baking
The dry time；
Wherein in above-mentioned step six, foamed plastics obtained in step 5 is subjected to shear forming according to use demand,
During shearing, so that the shear surface of foamed plastics is smooth；
Wherein in above-mentioned step seven, foamed plastics finished product obtained in step 6 is tested, foamed plastics should be made
Surface no marking, appearance are whole without breakage, and the foamed plastics finished product of quality inspection qualification is carried out packing and storing.
Wherein, in step 1, photosensitizer is the organic compound or salt of a kind of transition metal；In step 1, foaming
Agent is a kind of flaxen crystalline powder；In step 1, fire retardant is a kind of tetrabromobisphenol A fire retardant；It is ripe in step 3
The standing time of change is 4-8h, and the environment temperature of curing is 20-25 DEG C；In step 4, the preheating time of mold is 0.5
Min, the heating temperature of mold are 100-150 DEG C；In step 5, the temperature of drying is 85-130 DEG C.
Embodiment 2:
A kind of easy breakdown type foamed plastics, including polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
The component proportion of foaming agent, nucleating agent, fire retardant and water, above-mentioned raw materials is polyhydroxyalkanoate 36%, precipitated calcium carbonate
9%, cellulose 8%, photosensitizer 6%, plasticizer 10%, foaming agent 6%, nucleating agent 6%, fire retardant 4% and water 15%.
A kind of production technology of easy breakdown type foamed plastics, includes the following steps: step 1, the pretreatment of raw material；Step
Two, prefoam processing；Step 3, maturation process；Step 4, compression molding；Water is removed in step 5, drying；Step 6, punching；Step
Rapid seven, test package；
Wherein in above-mentioned step one, choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Impurity in raw material is rejected, is made during choosing raw material as raw material by foaming agent, nucleating agent, fire retardant and water
Impurity is not contained in raw material, according to polyhydroxyalkanoate 36%, precipitated calcium carbonate 9%, cellulose 8%, photosensitizer 6%,
Plasticizer 10%, foaming agent 6%, nucleating agent 6%, fire retardant 4% and water 15% ratio prepared；
Wherein in above-mentioned step two, by polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, fire retardant and water
It is passed through in blender and is stirred, so that raw material stirs evenly, and the mixing bead after stirring is carried out in hot water or steam
Prefoam is passed through in pre-foaming machine and carries out heating pressurized treatments, and successively add into pre-foaming machine plasticizer, foaming agent and at
Core agent makes pre-expanded particles reexpansion and mutual clinkering, so that polyhydroxyalkanoate forms pearl expander；
Wherein in above-mentioned step three, the pearl expander after foaming is placed into a period of time progress nature in air
Curing, so that air penetrates into the inside of pearl expander, the prefoaming beading after curing naturally should be stored in closed container,
The volatilization of foaming agent is reduced, to guarantee its swelliong power；
It wherein in above-mentioned step four, is pressed and molded using foam slab machine, before the forming first toward foamed plastics
It is passed through the heating steam of 0.1 ~ 0.2MPa in molding machine, after mold is preheated, opens gas outlet, will be sent out in advance with pneumatic transmission method
It steeps in particle injection mold cavity, is closed gas outlet, the steam of 0.1 ~ 0.2 MPa is passed through in vaporium, mold is carried out high
Temperature heating, so that the intracavitary pre-expanded particles of type are integrated with regard to expansion bonding, steam off valve simultaneously keeps 1 ~ 2min, then leads to
Cooling water finally demoulds；
Wherein in above-mentioned step five, the moisture in foamed plastics after compression molding is leading to cooling water after being evaporated out
It is condensed again in the process, plastic pellet should be dried, moisture is removed, until not occurring filamentary silver in foamed plastics, dried
Dry process, drying effect is closely related with drying time, when temperature is low, can extend drying time, when temperature is high, can shorten baking
The dry time；
Wherein in above-mentioned step six, foamed plastics obtained in step 5 is subjected to shear forming according to use demand,
During shearing, so that the shear surface of foamed plastics is smooth；
Wherein in above-mentioned step seven, foamed plastics finished product obtained in step 6 is tested, foamed plastics should be made
Surface no marking, appearance are whole without breakage, and the foamed plastics finished product of quality inspection qualification is carried out packing and storing.
Wherein, in step 1, photosensitizer is the organic compound or salt of a kind of transition metal；In step 1, foaming
Agent is a kind of flaxen crystalline powder；In step 1, fire retardant is a kind of tetrabromobisphenol A fire retardant；It is ripe in step 3
The standing time of change is 4-8h, and the environment temperature of curing is 20-25 DEG C；In step 4, the preheating time of mold is 0.5
Min, the heating temperature of mold are 100-150 DEG C；In step 5, the temperature of drying is 85-130 DEG C.
Embodiment 3:
A kind of easy breakdown type foamed plastics, including polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
The component proportion of foaming agent, nucleating agent, fire retardant and water, above-mentioned raw materials is polyhydroxyalkanoate 31%, precipitated calcium carbonate
11%, cellulose 10%, photosensitizer 8%, plasticizer 7%, foaming agent 8%, nucleating agent 8%, fire retardant 7% and water 10%.
A kind of production technology of easy breakdown type foamed plastics, includes the following steps: step 1, the pretreatment of raw material；Step
Two, prefoam processing；Step 3, maturation process；Step 4, compression molding；Water is removed in step 5, drying；Step 6, punching；Step
Rapid seven, test package；
Wherein in above-mentioned step one, choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Impurity in raw material is rejected, is made during choosing raw material as raw material by foaming agent, nucleating agent, fire retardant and water
It obtains and does not contain impurity in raw material, according to polyhydroxyalkanoate 31%, precipitated calcium carbonate 11%, cellulose 10%, photosensitizer
8%, the ratio of plasticizer 7%, foaming agent 8%, nucleating agent 8%, fire retardant 7% and water 10% is prepared；
Wherein in above-mentioned step two, by polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, fire retardant and water
It is passed through in blender and is stirred, so that raw material stirs evenly, and the mixing bead after stirring is carried out in hot water or steam
Prefoam is passed through in pre-foaming machine and carries out heating pressurized treatments, and successively add into pre-foaming machine plasticizer, foaming agent and at
Core agent makes pre-expanded particles reexpansion and mutual clinkering, so that polyhydroxyalkanoate forms pearl expander；
Wherein in above-mentioned step three, the pearl expander after foaming is placed into a period of time progress nature in air
Curing, so that air penetrates into the inside of pearl expander, the prefoaming beading after curing naturally should be stored in closed container,
The volatilization of foaming agent is reduced, to guarantee its swelliong power；
It wherein in above-mentioned step four, is pressed and molded using foam slab machine, before the forming first toward foamed plastics
It is passed through the heating steam of 0.1 ~ 0.2MPa in molding machine, after mold is preheated, opens gas outlet, will be sent out in advance with pneumatic transmission method
It steeps in particle injection mold cavity, is closed gas outlet, the steam of 0.1 ~ 0.2 MPa is passed through in vaporium, mold is carried out high
Temperature heating, so that the intracavitary pre-expanded particles of type are integrated with regard to expansion bonding, steam off valve simultaneously keeps 1 ~ 2min, then leads to
Cooling water finally demoulds；
Wherein in above-mentioned step five, the moisture in foamed plastics after compression molding is leading to cooling water after being evaporated out
It is condensed again in the process, plastic pellet should be dried, moisture is removed, until not occurring filamentary silver in foamed plastics, dried
Dry process, drying effect is closely related with drying time, when temperature is low, can extend drying time, when temperature is high, can shorten baking
The dry time；
Wherein in above-mentioned step six, foamed plastics obtained in step 5 is subjected to shear forming according to use demand,
During shearing, so that the shear surface of foamed plastics is smooth；
Wherein in above-mentioned step seven, foamed plastics finished product obtained in step 6 is tested, foamed plastics should be made
Surface no marking, appearance are whole without breakage, and the foamed plastics finished product of quality inspection qualification is carried out packing and storing.
Wherein, in step 1, photosensitizer is the organic compound or salt of a kind of transition metal；In step 1, foaming
Agent is a kind of flaxen crystalline powder；In step 1, fire retardant is a kind of tetrabromobisphenol A fire retardant；It is ripe in step 3
The standing time of change is 4-8h, and the environment temperature of curing is 20-25 DEG C；In step 4, the preheating time of mold is 0.5
Min, the heating temperature of mold are 100-150 DEG C；In step 5, the temperature of drying is 85-130 DEG C.
Based on above-mentioned, it is an advantage of the current invention that the present invention choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose,
As raw material, photosensitizer is a kind of organic compound of transition metal for photosensitizer, plasticizer, foaming agent, nucleating agent, fire retardant and water
Object or salt, foaming agent are a kind of flaxen crystalline powder, and fire retardant is a kind of tetrabromobisphenol A fire retardant, are choosing raw material
In the process, the impurity in raw material is rejected, so that impurity is not contained in raw material, according to polyhydroxyalkanoate, lightweight carbon
Sour calcium, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent, fire retardant and water ratio prepared；By poly- hydroxy aliphatic
Acid esters, precipitated calcium carbonate, cellulose, photosensitizer, fire retardant and water, which are passed through in blender, to be stirred, so that raw material stirring is equal
It is even, and the mixing bead after stirring is subjected to prefoam in hot water or steam, it is passed through in pre-foaming machine and carries out at heating pressurization
Reason, and successively add plasticizer, foaming agent and nucleating agent into pre-foaming machine, make pre-expanded particles reexpansion and melt mutually
Knot, so that polyhydroxyalkanoate forms pearl expander；Pearl expander after foaming is placed one section in air
Time carries out nature curing, and the standing time of curing is 4-8h, and the environment temperature of curing is 20-25 DEG C, so that air penetrates into
The inside of pearl expander, the prefoaming beading after curing naturally should be stored in closed container, reduce the volatilization of foaming agent, with
Guarantee its swelliong power；It is pressed and molded using foam slab machine, is first led to before the forming into foam slab machine
The heating steam for entering 0.1 ~ 0.2MPa opens gas outlet after mold is carried out 0.5 min of preheating, with pneumatic transmission method by prefoam
Particle injects in mold cavity, is closed gas outlet, the steam of 0.1 ~ 0.2 MPa is passed through in vaporium, carries out high temperature to mold
Heating, the heating temperature of mold are 100-150 DEG C, so that the intracavitary pre-expanded particles of type are integrated with regard to expansion bonding, close and steam
Steam valve door simultaneously keeps 1 ~ 2min, then leads to cooling water, finally demoulds；The moisture in foamed plastics after compression molding is evaporated out
It is condensed again during logical cooling water after coming, plastic pellet should be dried, the temperature of drying is 85-130 DEG C, water
Divide and remove, until not occurring filamentary silver in foamed plastics, in the process of drying, drying effect is closely related with drying time, temperature
When low, drying time can be extended, when temperature is high, drying time can be shortened；Obtained foamed plastics is carried out according to use demand
Shear forming, during shearing, so that the shear surface of foamed plastics is smooth；Obtained foamed plastics finished product is examined
It tests, Foam Plastic Surface no marking should be made, appearance is integrally packed without breakage, and by the foamed plastics finished product of quality inspection qualification
Storage；The present invention, choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent,
Fire retardant and water are as raw material, in use, can avoid plastic pollution convenient for decomposing, have flame retardant effect, in the mistake of production
Cheng Zhong substantially increases the quality of foamed plastics by curing to raw material.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of easy breakdown type foamed plastics, including polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticising
Agent, foaming agent, nucleating agent, fire retardant and water, it is characterised in that: the component proportion of above-mentioned raw materials is, polyhydroxyalkanoate 30 ~
37%, precipitated calcium carbonate 8 ~ 13%, cellulose 8 ~ 12%, photosensitizer 6 ~ 10%, plasticizer 7 ~ 11%, foaming agent 6 ~ 11%, at
Core agent 5 ~ 9%, fire retardant 4 ~ 8% and water 10 ~ 15%.
2. a kind of production technology of easy breakdown type foamed plastics, includes the following steps: step 1, the pretreatment of raw material；Step 2,
Prefoam processing；Step 3, maturation process；Step 4, compression molding；Water is removed in step 5, drying；Step 6, punching；Step
Seven, test package；It is characterized by:
Wherein in above-mentioned step one, choose polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, plasticizer,
Impurity in raw material is rejected, is made during choosing raw material as raw material by foaming agent, nucleating agent, fire retardant and water
It obtains and does not contain impurity in raw material, according to polyhydroxyalkanoate 30 ~ 37%, precipitated calcium carbonate 8 ~ 13%, cellulose 8 ~ 12%, light
Quick dose 6 ~ 10%, the ratio of plasticizer 7 ~ 11%, foaming agent 6 ~ 11%, nucleating agent 5 ~ 9%, fire retardant 4 ~ 8% and water 10 ~ 15%
It is prepared；
Wherein in above-mentioned step two, by polyhydroxyalkanoate, precipitated calcium carbonate, cellulose, photosensitizer, fire retardant and water
It is passed through in blender and is stirred, so that raw material stirs evenly, and the mixing bead after stirring is carried out in hot water or steam
Prefoam is passed through in pre-foaming machine and carries out heating pressurized treatments, and successively add into pre-foaming machine plasticizer, foaming agent and at
Core agent makes pre-expanded particles reexpansion and mutual clinkering, so that polyhydroxyalkanoate forms pearl expander；
Wherein in above-mentioned step three, the pearl expander after foaming is placed into a period of time progress nature in air
Curing, so that air penetrates into the inside of pearl expander, the prefoaming beading after curing naturally should be stored in closed container,
The volatilization of foaming agent is reduced, to guarantee its swelliong power；
It wherein in above-mentioned step four, is pressed and molded using foam slab machine, before the forming first toward foamed plastics
It is passed through the heating steam of 0.1 ~ 0.2MPa in molding machine, after mold is preheated, opens gas outlet, will be sent out in advance with pneumatic transmission method
It steeps in particle injection mold cavity, is closed gas outlet, the steam of 0.1 ~ 0.2 MPa is passed through in vaporium, mold is carried out high
Temperature heating, so that the intracavitary pre-expanded particles of type are integrated with regard to expansion bonding, steam off valve simultaneously keeps 1 ~ 2min, then leads to
Cooling water finally demoulds；
Wherein in above-mentioned step five, the moisture in foamed plastics after compression molding is leading to cooling water after being evaporated out
It is condensed again in the process, plastic pellet should be dried, moisture is removed, until not occurring filamentary silver in foamed plastics, dried
Dry process, drying effect is closely related with drying time, when temperature is low, can extend drying time, when temperature is high, can shorten baking
The dry time；
Wherein in above-mentioned step six, foamed plastics obtained in step 5 is subjected to shear forming according to use demand,
During shearing, so that the shear surface of foamed plastics is smooth；
Wherein in above-mentioned step seven, foamed plastics finished product obtained in step 6 is tested, foamed plastics should be made
Surface no marking, appearance are whole without breakage, and the foamed plastics finished product of quality inspection qualification is carried out packing and storing.
3. a kind of easy breakdown type foamed plastics according to claim 1, it is characterised in that: the polyhydroxyalkanoate,
Precipitated calcium carbonate, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent, fire retardant and water component proportion take respectively: poly- hydroxyl
Base aliphatic ester 34%, precipitated calcium carbonate 10%, cellulose 9%, photosensitizer 7%, plasticizer 8%, foaming agent 7%, nucleating agent
7%, fire retardant 5% and water 13%.
4. a kind of easy breakdown type foamed plastics according to claim 1, it is characterised in that: the polyhydroxyalkanoate,
Precipitated calcium carbonate, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent, fire retardant and water component proportion take respectively: poly- hydroxyl
Base aliphatic ester 36%, precipitated calcium carbonate 9%, cellulose 8%, photosensitizer 6%, plasticizer 10%, foaming agent 6%, nucleating agent
6%, fire retardant 4% and water 15%.
5. a kind of easy breakdown type foamed plastics according to claim 1, it is characterised in that: the polyhydroxyalkanoate,
Precipitated calcium carbonate, cellulose, photosensitizer, plasticizer, foaming agent, nucleating agent, fire retardant and water component proportion take respectively: poly- hydroxyl
Base aliphatic ester 31%, precipitated calcium carbonate 11%, cellulose 10%, photosensitizer 8%, plasticizer 7%, foaming agent 8%, nucleating agent
8%, fire retardant 7% and water 10%.
6. a kind of production technology of easy breakdown type foamed plastics according to claim 2, it is characterised in that: the step 1
In, photosensitizer is the organic compound or salt of a kind of transition metal.
7. a kind of production technology of easy breakdown type foamed plastics according to claim 2, it is characterised in that: the step 1
In, foaming agent is a kind of flaxen crystalline powder.
8. a kind of production technology of easy breakdown type foamed plastics according to claim 2, it is characterised in that: the step 1
In, fire retardant is a kind of tetrabromobisphenol A fire retardant.
9. a kind of production technology of easy breakdown type foamed plastics according to claim 2, it is characterised in that: the step 3
In, the standing time of curing is 4-8h, and the environment temperature of curing is 20-25 DEG C.
10. a kind of production technology of easy breakdown type foamed plastics according to claim 2, it is characterised in that: the step
In four, the preheating time of mold is 0.5 min, and the heating temperature of mold is 100-150 DEG C.
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Application publication date: 20190118 |