CN107814972A - A kind of secondary irradiation treatment method of foamed plastics - Google Patents
A kind of secondary irradiation treatment method of foamed plastics Download PDFInfo
- Publication number
- CN107814972A CN107814972A CN201711077971.6A CN201711077971A CN107814972A CN 107814972 A CN107814972 A CN 107814972A CN 201711077971 A CN201711077971 A CN 201711077971A CN 107814972 A CN107814972 A CN 107814972A
- Authority
- CN
- China
- Prior art keywords
- irradiation
- foam
- foamed plastics
- treatment method
- irradiated
- 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.)
- Pending
Links
Classifications
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/107—Nitroso compounds
-
- 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
- C08J9/36—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- 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
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of secondary irradiation treatment method of foamed plastics, including step：1) using cross-linking radiation foamed plastics as raw sheet, and the compressive strength of the sheet material is tested；2) it is separately sampled, and doses are irradiated in the atmospheres such as air, nitrogen or acetylene, the irradiation techniques such as the irradiation of single one side, the two-sided irradiation of single, the irradiation of multiple one side and multi-time two-sided irradiation can be used.The present invention does not change existing factory formula, technique and equipment, the intensity of foam directly is improved to the mode of the foam progress electron beam irradiation of foaming, the characteristics of with efficient, convenient, fast, positive effect, and there is no any influence to the existing production technology of foam, the intensity of foam rapidly can be improved more than 30%, modulus improves more than 50%, is that the modified method of other any enhancings hardly matches.
Description
Technical field
The present invention relates to a kind of processing method of foamed plastics, belong to chemical materials processing technology field, more particularly to
A kind of secondary irradiation treatment method of foamed plastics.
Background technology
At present using irradiance method prepare foam mainly include polyethylene (PE) foam, polyvinyl chloride (PVC) foam (see
Patent 201010171364.8) and polypropylene (PP) foam.It is mainly to utilize itself to be formed to prepare foam using irradiance method
Addition irradiates sensitizer to form appropriate cross-linked structure (such as PVC and PP) in cross-linked structure (such as PE) or formula, so that
Suitable melt strength is formed during foaming to prepare the foam of high foamability.
Under identical density, the performance of foamed plastics depends on chemistry, physical property, abscess, the foam knot of polymer
Structure and molding technological condition etc..The main path of the performance of raising foam has following several：1) it is blended with other materials
It is modified；2) rigidity of polymer molecular chain or the rigidity of cross-linked structure are improved；3) bubble is improved by special foaming process conditions
Hole, foam structure.Raising to foam mechanical property is concentrated mainly in first two method, such as in PVC add isocyanates,
Acid anhydrides etc. forms the cross-linking system of double macromolecule components (see patent 200910033041.X)；Or addition reinforced modifier, addition
Sensitizer (see patent 201210491495.3) and the processing of follow-up silane coupler containing rigid structure carry out secondary cross-linking,
The mechanical property of foam can be improved to a certain extent, but directly foam is handled on the basis of formula is not changed to carry
The mechanical property of high foam simultaneously has no related report.
It may influence to steep, it is necessary to add larger amount of other materials to improve the performance of foam by way of blending
The processing characteristics of foam and the foam structure of foam, so as to influence the combination property of foam.And by improving polymer molecular chain
The rigidity of rigidity or cross-linked structure, then it is likely to result in the raising of product cost.
Simultaneously as reinforced modifier has rigid structure, polarity is stronger, and compatibility is there may be with original system
Problem, especially PE and PP systems, are easily separated out from system, so as to influence the processing characteristics of foam and foam structure.And lead to
Special foaming process conditions are crossed to improve abscess, foam structure, the degree not only improved is very limited, and needs to existing life
Production equipment is improved, it is likely that can increase the input of equipment aspect.
The content of the invention
It is an object of the invention to provide a kind of secondary irradiation treatment method of foamed plastics, mainly by using irradiation
Foam prepared by mode is irradiated again, and so as to improve the mechanical property of foam, including intensity and modulus, the technology belongs to irradiation
Foam production field and foam enhancing field.
The object of the invention to solve the technical problems is realized using following technical scheme.Itd is proposed according to the present invention
A kind of foamed plastics secondary irradiation treatment method, comprise the following steps：
1) using cross-linking radiation foamed plastics as raw sheet, and the compressive strength of the sheet material is tested；
2) it is separately sampled, and doses are irradiated in the atmosphere such as nitrogen or acetylene or air, single one side spoke can be used
According to irradiation techniques such as, the two-sided irradiation of single, the irradiation of multiple one side and multi-time two-sided irradiation.The radiation treatment of foamed plastics of the present invention
Method, in step 1), the crosslinked plastic foam includes but is not limited to crosslinked PVC foam, crosslinked PE foam, crosslinking PP foams
Deng.
The secondary irradiation treatment method of foamed plastics of the present invention, in step 1), the density of the raw sheet can be 30-
200kg/m3。
The secondary irradiation treatment method of foamed plastics of the present invention, in step 1), cross-linking radiation foamed plastics is cross-linking radiation
PE foams, its preparation method include processing step in detail below：
1) by the parts by weight of PE resins 100, foaming agent 5-20 parts by weight, irradiation sensitizer 5-12 parts by weight, processing aid and
Blowing promotor is some to wait raw material to be well mixed, and sheet material is made, and it is 30-150kg/m to test its density3；
2) sheet material is irradiated into 4-12M；
3) sheet material irradiated is foamed in 185-210 DEG C of foaming furnace, crosslinked PE foam plate is made.
The secondary irradiation treatment method of foamed plastics of the present invention, in step 1), cross-linking radiation foamed plastics is cross-linking radiation
PVC foams, its preparation method include processing step in detail below：
1) parts by weight of polyvinyl chloride resin 100, foaming agent 5-20 parts by weight, irradiation sensitizer 5-12 parts by weight, PVC processing are helped
The raw materials such as agent and blowing promotor are some are well mixed, and sheet material is made；
2) sheet material is irradiated into 0.6-4M；
3) sheet material irradiated is foamed in 185-210 DEG C of foaming furnace, crosslinked PVC cystosepiment is made, test its density
For 60-200kg/m3。
The secondary irradiation treatment method of foamed plastics of the present invention, in step 2), the foaming agent is selected from AC foaming agents, carbonic acid
Hydrogen sodium, blowing agent H, foaming agent RA one or more；The irradiation sensitizer is selected from TMPTA, TMPTMA, TAIC, Ji Wusi
One or more in alcohol tetraacrylate etc..
The secondary irradiation treatment method of foamed plastics of the present invention, in step 2), irradiation atmosphere is using air, nitrogen
Gas and acetylene, more optimizedly nitrogen and acetylene；Irradiation atmosphere can be 4-15M using irradiation dose, single irradiation dose
Can be 1-5M；Radiation parameter can be one side irradiation and two-sided irradiation.
The secondary irradiation treatment method of foamed plastics of the present invention, the single dose of the secondary irradiation of foam close no more than 5M
Suitable dosage range is 1-5M, more optimizedly 2-4M.
The secondary irradiation treatment method of foamed plastics of the present invention, accumulated dose need to be controlled in 4-15M, and more optimizedly 8-12M, steeps
The compressive strength of foam can improve more than 30%, and modulus of compressibility can improve more than 50%.
The secondary irradiation treatment method of foamed plastics of the present invention, when the cystosepiment irradiated is thicker (thickness >=15mm)
When, it is necessary to be irradiated by the way of two-sided irradiation.
By above-mentioned technical proposal, the invention has the advantages that and beneficial effect：
1) present invention is right under certain atmosphere in the case where not changing existing factory formula, technique and equipment
The foam of complete foaming is irradiated a range of dosage again, makes crosslinked foams further on the basis of original
Crosslinking, so as to reach the purpose for improving foamy body.
2) dosage of strict control irradiation and the mode of irradiation are needed to molded foam irradiation, is not so easily caused
The degraded and deformation of foam, so as to influence the performance of foam.
3) present invention simply carries out radiation treatment on the basis of existing foam, it is not necessary to reinforced modifier is added, will not
The processing characteristics of substance system is impacted, does not also interfere with the foam structure of foam.
Embodiment
Present invention foam-type applicatory be using the foam prepared by cross-linking radiation, including but not limited to PE, PVC,
The foams such as PP.The mode of irradiation is controlled mainly to be controlled from irradiation atmosphere, irradiation dose and condition etc..
Although the present invention can also irradiate to foam in atmosphere, it can also reach the effect for improving foamy body to a certain degree
Fruit.To improve irradiation efficiency, the influence of the oxygen in air is reduced, is more optimizedly carried out under the atmospheres such as nitrogen, acetylene
Irradiation, is especially irradiated under acetylene atmosphere.
By research, the irradiation of foam single and accumulative irradiation dose are worthy of careful study very much.It has been investigated that the secondary irradiation of foam
Single dose no more than 5M, suitable dosage range is 1-5M, more optimizedly 2-4M.When single irradiation dose is less than 1M
When, the cross-linking effect unobvious again of foam will be made, the raising unobvious (being less than 15%) to foaming properties.Single dose exceedes
During 5M, it will cause foam to degrade and make intensity decreases.The mechanical property of foam is set to be significantly improved, accumulated dose needs to control
In 4-15M, more optimizedly 8-12M, the compressive strength of foam can improve more than 30%, and modulus of compressibility can improve 50%.Total irradiation
Not so dosage will cause foam to degrade and make intensity decreases no more than 15M；When total dose is less than 4M, to spumescence
The raising unobvious (being less than 15%) of energy.
Because electron beam has certain penetrability, when the cystosepiment irradiated thicker (thickness >=15mm), it is necessary to
Irradiated by the way of two-sided irradiation.
The present invention does not change existing factory formula, technique and equipment, directly carries out electron beam to the foam of foaming
The mode of irradiation improves the intensity of foam, has the characteristics of efficient, convenient, fast, positive effect, and to the existing life of foam
Production. art does not have any influence, the intensity of foam rapidly can be improved into more than 30%, modulus improves more than 50%, is other
What strengthens what modified method hardly matched.
The present invention is described in further detail below by way of specific preferred embodiment, but the present invention be not limited in it is following
Embodiment.
Embodiment 1
The present invention is handled cross-linking radiation foam board using secondary radiation mode, and its technical process can be stated such as
Under：
Step 1：The preparation method of cross-linking radiation PVC foams, including processing step in detail below：
1) parts by weight of polyvinyl chloride resin 100, the parts by weight of AC foaming agents 9, irradiation sensitizer TMPTA7 parts by weight, PVC processing are helped
The raw materials such as agent and blowing promotor are some are well mixed, and sheet material is made；
2) sheet material is irradiated into 1M；
3) sheet material irradiated is foamed in 200 DEG C of foaming furnaces, crosslinked PVC cystosepiment is made, testing its density is
60kg/m3。
Step 2: carrying out secondary radiation treatment to cross-linking radiation PVC foams prepared by step 1, its specific embodiment is such as
Under：
With 60kg/m3Cross-linking radiation PVC foams be raw sheet, after tested, the sheet material compressive strength is 0.38MPa, modulus
For 9.7MPa.It is separately sampled irradiated in nitrogen 0.8M (single 0.8M, one side irradiation), 8M (single 4M, two-sided irradiation),
12M (single 4M, two-sided irradiation) and 20M (single 5M, two-sided irradiation).It is as a result as shown in table 1 below through test after irradiation.
The crosslinked PVC foam of table 1 irradiates test result
It can be seen that by above-mentioned table 1, after irradiating 0.8M, the compressive strength of foam improves 13%, modulus and improves 38%；Effect is most
It is apparent that 12M, the compressive strength of foam improves 61%, modulus and improves 127%；When irradiating 20M, the compressive strength drop of foam
Low 8%, modulus reduces 5%.
Embodiment 2
The present invention is handled cross-linking radiation foam board using secondary radiation mode, and its technical process can be stated such as
Under：
Step 1：The preparation method of cross-linking radiation PVC foams, including processing step in detail below：
1) parts by weight of polyvinyl chloride resin 100, foaming agent RA8 parts by weight, irradiation sensitizer TAIC8 parts by weight, PVC processing are helped
The raw materials such as agent and blowing promotor are some are well mixed, and sheet material is made；
2) sheet material is irradiated into 1M；
3) sheet material irradiated is foamed in 200 DEG C of foaming furnaces, crosslinked PVC cystosepiment is made, testing its density is
100kg/m3。
Step 2: carrying out secondary radiation treatment to cross-linking radiation PVC foams prepared by step 1, its specific embodiment is such as
Under：
With 100kg/m3Cross-linking radiation PVC foams be raw sheet, after tested, the sheet material compressive strength is 1.01MPa, modulus
For 32.55MPa.It is separately sampled to have irradiated 4M (single 4M, one side irradiation), 6M (single 3M, two-sided irradiation) in atmosphere.Irradiation
It is as a result as shown in table 2 below by test.
The crosslinked PVC foam of table 2 irradiates test result
It can be seen that by above-mentioned table 2, after irradiating 4M, the compressive strength of foam improves 35%, modulus and improves 54%；Effect is brighter
That aobvious is 6M, and the compressive strength of foam improves 40%, modulus and improves 74%.
Embodiment 3
The present invention is handled cross-linking radiation foam board using secondary radiation mode, and its technical process can be stated such as
Under：
Step 1：The preparation method of cross-linking radiation PE foams, including processing step in detail below：
1) PE100 parts by weight, the parts by weight of blowing agent H 12, processing aid and the raw materials such as blowing promotor is some are well mixed,
And sheet material is made；
2) sheet material is irradiated into 6M；
3) sheet material irradiated is foamed in 195 DEG C of foaming furnaces, crosslinked PE foam is made, it is 50kg/ to test its density
m3。
Step 2：Radiation treatment is carried out to cross-linking radiation PE foams prepared by step 1, its specific embodiment is as follows：
With 50kg/m3Cross-linking radiation PE foams be raw sheet, after tested, the sheet material compressive strength is 0.12MPa.
It is separately sampled irradiated in atmosphere 0.6M (single 0.6M, one side irradiation), 6M (single 3M, two-sided irradiation) and
0.6M (single 0.6M, one side irradiation), 6M (single 3M, two-sided irradiation) are irradiated in acetylene atmosphere, the sheet material after irradiation is placed
Tested after a period of time, as a result as shown in table 3.
The crosslinked PE foam of table 3 irradiates test result
| Sequence number | Dosage (M) | Radiation mode | Compressive strength (MPa) |
| 1 | Raw sheet | - | 0.12 |
| 2 | 0.6 | One side, air | 0.13 |
| 3 | 6.0 | Two-sided 3M+3M, air | 0.16 |
| 4 | 0.6 | One side, acetylene | 0.13 |
| 5 | 6.0 | Two-sided 3M+3M, acetylene | 0.18 |
As seen from Table 3, it is more slightly higher than in air atmosphere in acetylene atmosphere when irradiating same dose；When irradiating 6M, intensity
Raising it is more obvious than 0.6M.
Embodiment 4
The present invention is handled cross-linking radiation foam board using secondary radiation mode, and its technical process can be stated such as
Under：
Step 1：The preparation method of cross-linking radiation PP foams, including processing step in detail below：
1) by PP100 parts by weight, foaming agent RA13 parts by weight, compound irradiation sensitizer TMPTMA and pentaerythrite tetrapropylene
The parts by weight of acid esters 10, processing aid and the raw materials such as blowing promotor is some are well mixed, and sheet material is made；
2) sheet material is irradiated into 0.6M；
3) sheet material irradiated is foamed in 210 DEG C of foaming furnaces, crosslinking PP foams is made, it is 45kg/ to test its density
m3。
Step 2：Radiation treatment is carried out to cross-linking radiation PP foams prepared by step 1, its specific embodiment is as follows：
With 45kg/m3Cross-linking radiation PP foams be raw sheet, after tested, the sheet material compressive strength is 105KPa.
It is separately sampled that 0.6M (single 0.6M, one side irradiation), 2M (single 2M, one side irradiation), 8M have been irradiated in nitrogen
(single 4M, two-sided irradiation) and 16M (single 4M, two-sided irradiation), the sheet material after irradiation are tested after placing a period of time, tied
Fruit is as shown in table 4.
Table 4 is crosslinked PP foams irradiation test result
| Sequence number | Dosage (M) | Radiation mode | Compressive strength (KPa) |
| 1 | Raw sheet | - | 105 |
| 2 | 0.6 | One side, nitrogen | 108 |
| 3 | 2 | One side, nitrogen | 110 |
| 4 | 8 | Two-sided 4M+4M, nitrogen | 151 |
| 5 | 16 | Two-sided 4M+4M+4M+4M, nitrogen | 101 |
It can be seen that by above-mentioned table 4, after irradiating 0.6M and 2M, the compressive strength of foam slightly improves, but less obvious；Irradiation
After 8M, the intensity of foam improves 44%；After irradiating 16M, the intensity of foam decreases on the contrary, and foam has deformation, become
The phenomenon of color.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, therefore
It is every without departing from technical solution of the present invention content, what the technical spirit according to the present invention was made to above example any simply repaiies
Change, equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. the secondary irradiation treatment method of a kind of foamed plastics, it is characterised in that comprise the following steps：
1) using cross-linking radiation foamed plastics as raw sheet, and the compressive strength of the sheet material is tested；
2) it is separately sampled, and doses are irradiated in air, nitrogen, acetylene gas atmosphere, the irradiation of single one side, list can be used
Secondary two-sided irradiation, the irradiation of multiple one side and multi-time two-sided irradiation.
2. the secondary irradiation treatment method of foamed plastics according to claim 1, it is characterised in that：It is described in step 1)
Cross-linking radiation foamed plastics includes but is not limited to crosslinked PVC foam, crosslinked PE foam, crosslinking PP foams etc..
3. the secondary irradiation treatment method of foamed plastics according to claim 1, it is characterised in that：It is described in step 1)
The density of cystosepiment can be 30-200kg/m3。
4. the secondary irradiation treatment method of foamed plastics according to claim 2, it is characterised in that：In step 1), irradiation
Crosslinked plastic foam is cross-linking radiation PE foams, and its preparation method includes processing step in detail below：
1) by the parts by weight of PE resins 100, foaming agent 5-20 parts by weight, irradiation sensitizer 5-12 parts by weight, processing aid and foaming
Auxiliary agent is some to wait raw material to be well mixed, and sheet material is made, and it is 30-150kg/m to test its density3；
2) sheet material is irradiated into 4-12M；
3) sheet material irradiated is foamed in 185-210 DEG C of foaming furnace, crosslinked PE foam plate is made.
5. the secondary irradiation treatment method of foamed plastics according to claim 2, it is characterised in that：In step 1), irradiation
Crosslinked plastic foam is cross-linking radiation PVC foams, and its preparation method includes processing step in detail below：
1) by the parts by weight of polyvinyl chloride resin 100, foaming agent 5-20 parts by weight, irradiation sensitizer 5-12 parts by weight, PVC processing aids and
Blowing promotor is some to wait raw material to be well mixed, and sheet material is made；
2) sheet material is irradiated into 0.6-4M；
3) sheet material irradiated is foamed in 185-210 DEG C of foaming furnace, crosslinked PVC cystosepiment is made, it is 60- to test its density
200kg/m3。
6. the secondary irradiation treatment method of the foamed plastics according to claim 4 or 5, it is characterised in that：In step 2), institute
State foaming agent and be selected from AC foaming agents, sodium acid carbonate, blowing agent H, foaming agent RA one or more；The irradiation sensitizer is selected from
One or more in TMPTA, TMPTMA, TAIC, tetramethylol methane tetraacrylate etc..
7. the secondary irradiation treatment method of foamed plastics according to claim 1, it is characterised in that：In step 2), irradiation
Atmosphere is using air, nitrogen and acetylene, more optimizedly nitrogen and acetylene；Irradiating atmosphere can using irradiation dose
To be 4-15M, single irradiation dose can be 1-5M；Radiation parameter can be one side irradiation and two-sided irradiation.
8. the secondary irradiation treatment method of foamed plastics according to claim 2, it is characterised in that：The secondary irradiation of foam
Single dose is no more than 5M, and suitable dosage range is 1-5M, more optimizedly 2-4M.
9. the secondary irradiation treatment method of foamed plastics according to claim 1, it is characterised in that：Accumulated dose need to control
4-15M, more optimizedly 8-12M, the compressive strength of foam can improve more than 30%, modulus of compressibility can improve more than 50%.
10. the secondary irradiation treatment method of foamed plastics according to claim 1, it is characterised in that：When the bubble irradiated
, it is necessary to be irradiated by the way of two-sided irradiation during foam plate thicker (thickness >=15mm).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077971.6A CN107814972A (en) | 2017-11-06 | 2017-11-06 | A kind of secondary irradiation treatment method of foamed plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711077971.6A CN107814972A (en) | 2017-11-06 | 2017-11-06 | A kind of secondary irradiation treatment method of foamed plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107814972A true CN107814972A (en) | 2018-03-20 |
Family
ID=61603866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711077971.6A Pending CN107814972A (en) | 2017-11-06 | 2017-11-06 | A kind of secondary irradiation treatment method of foamed plastics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107814972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181066A (en) * | 2018-08-20 | 2019-01-11 | 湖北祥源新材科技股份有限公司 | A kind of high rebound polyethylene filling particle, application and its processing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992007464A1 (en) * | 1990-10-24 | 1992-05-14 | University Of Florida | Combined plasma and gamma radiation polymerization method for modifying surfaces |
| CN1370797A (en) * | 2001-02-26 | 2002-09-25 | 四川大学 | Irradiation crosslinking technological process of preparing linear low-density foamed polyethylene plastics |
| CN101824194A (en) * | 2010-05-13 | 2010-09-08 | 佛山塑料集团股份有限公司 | Radiated crosslinking PVC (Polyvinyl Chloride) rigid foaming material |
-
2017
- 2017-11-06 CN CN201711077971.6A patent/CN107814972A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992007464A1 (en) * | 1990-10-24 | 1992-05-14 | University Of Florida | Combined plasma and gamma radiation polymerization method for modifying surfaces |
| CN1370797A (en) * | 2001-02-26 | 2002-09-25 | 四川大学 | Irradiation crosslinking technological process of preparing linear low-density foamed polyethylene plastics |
| CN101824194A (en) * | 2010-05-13 | 2010-09-08 | 佛山塑料集团股份有限公司 | Radiated crosslinking PVC (Polyvinyl Chloride) rigid foaming material |
Non-Patent Citations (2)
| Title |
|---|
| 刘道龙: ""辐射交联硅橡胶泡沫的制备及性能研究"", 《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅰ辑》 * |
| 李树军等: ""高能辐射对超高分子量聚乙烯纤维结构和力学性能的影响"", 《辐射研究与辐射工艺学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181066A (en) * | 2018-08-20 | 2019-01-11 | 湖北祥源新材科技股份有限公司 | A kind of high rebound polyethylene filling particle, application and its processing method |
| CN109181066B (en) * | 2018-08-20 | 2021-04-06 | 湖北祥源新材科技股份有限公司 | High-resilience polyethylene filling particle, application and processing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104788967B (en) | A kind of silicon rubber microporous foamed material of mixed type foam structure and preparation method thereof | |
| CN101081914A (en) | Polypropylene expanded material and method for manufacturing same | |
| CN101225221B (en) | Polylactic acid and electron beam radiation modifying method for copolymer composite material thereof | |
| CN103160045B (en) | A kind of polyvinyl-chloride foam material and preparation method thereof | |
| CN102399390B (en) | Preparation method of radiation-crosslinked polypropylene | |
| CN104108151A (en) | Preparation method of polypropylene foaming sheet material through ultraviolet light radiation crosslinking | |
| CN104744946B (en) | A kind of high temperature resistant type silicon rubber foam material and preparation method thereof | |
| CN105017581A (en) | Method for preparing modified waste rigid polyurethane foaming plastic active micro-powder reinforcing rubber material | |
| CN107814972A (en) | A kind of secondary irradiation treatment method of foamed plastics | |
| CN110591304B (en) | Biodegradable polyester foam material and preparation method thereof | |
| SE446456B (en) | PROCEDURE FOR THE MANUFACTURING OF FOUNDED AND EVEN FOAMED HIGH PRESSURE AND LOW PRESSURE POLYPROPENES | |
| CN107759883A (en) | A kind of crosslinked polyethylene foam material and preparation method thereof | |
| CN105348655B (en) | A kind of ethylene-propylene-diene monomer matrix microporous foamed material and preparation method thereof | |
| DE59903660D1 (en) | METHOD FOR PRODUCING FOAMED PLASTIC BLOCKS BASED ON POLYOLEFIN | |
| CN105400037A (en) | High-temperature resistant plastic bag and preparation method thereof | |
| CN102964720B (en) | Crosslinked PVC (Poly Vinyl Chloride) structure foamed material and preparation method thereof | |
| CN101717520A (en) | Method for using electron beam to irradiate crosslinked thermoplastic polyester elastomer | |
| CN104910631B (en) | A kind of colored silicon rubber foam material and its production and use | |
| CN107698851A (en) | A kind of crosslinked polyethylene foam material and preparation method thereof | |
| CN107189153A (en) | A kind of manufacture craft of the modified poly ethylene of household electrical appliance production | |
| CN104371186A (en) | Short-time self-crosslinking polyolefin material and preparation method thereof | |
| CN100386381C (en) | Composite foam material of poly epsi-caprolactone/inorganic filler and preparation method thereof | |
| KR102331742B1 (en) | Fully biodegradable mulching film that can mulch film mechanically | |
| CN106750484A (en) | A kind of foaming agent | |
| CN112912426A (en) | Silane-crosslinkable foamable polyolefin compositions and foams |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180320 |