CN109370005A - One kind can silk-screen blow molding fretting map tool box and preparation method thereof - Google Patents
One kind can silk-screen blow molding fretting map tool box and preparation method thereof Download PDFInfo
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- CN109370005A CN109370005A CN201811165719.5A CN201811165719A CN109370005A CN 109370005 A CN109370005 A CN 109370005A CN 201811165719 A CN201811165719 A CN 201811165719A CN 109370005 A CN109370005 A CN 109370005A
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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
- 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
- C08J9/08—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 carbon dioxide
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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
- 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
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
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- 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
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C—CHEMISTRY; METALLURGY
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- 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
- C08J2203/18—Binary blends of expanding agents
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- 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
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- 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
- C08J2323/08—Copolymers of ethene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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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
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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Abstract
The present invention relates to a kind of fretting map tool box material and preparation method thereof, especially one kind can silk-screen blow molding fretting map tool box material and preparation method thereof.Material of the invention includes the component of following parts by weight: 70-90 parts of polyethylene, 5-15 parts of super-high fluidity polyethylene, 0-10 parts of filler, 1-10 parts of polarity modifier, 1-5 parts of compatilizer, 1-15 parts of toughener, 1-10 parts of foaming agent, 3-15 parts of blowing promotor, 0.5-2 parts of other auxiliary agents.And disclose preparation method.Material molding abscess of the present invention is fine and smooth, cell density is high, fretting map tool box surface is smooth, uniform, and paint can be smeared uniformly, be sprawled, rich texture, screen printing paint bonding force is strong, adhesive force test meets tool box silk-screen requirement, and can meet multiple types ink silk screen printing without falling off, also there is the features such as light-weight, resiliency is good, good stability of the dimension, short molding cycle, and product qualified rate is high simultaneously.
Description
Technical field
The present invention relates to a kind of tool box material and preparation method thereof, especially one kind can silk-screen blow molding fretting map tool box
And preparation method thereof, belong to technical field of polymer materials.
Background technique
Blow moulding tool case gathers together various tools, convenient to use and management service.Meeting basic mechanical performance
Under the premise of it is required that, exquisite appearance is also required.Wherein, exquisite appearance is mainly obtained by screen printing method.It is blow molded fretting map skill
Art is because of its distinctive sandwich structure, it can be achieved that substantially weight subtracts under the premise of meeting tool box product mechanical property and requiring
Gently, it can not only significantly reduce product cost but also the portability of product can be improved, and improve the integration of product.However, practical application
In, the defects of belonging to free foaming because of tool box foaming process, generate rough product surface, point, and tool box silk-screen mistake
Journey has very strict surface smoothness requirement.Disadvantages described above is easily amplified in silk-screen printing process, can seriously affect the later period
The silk-screen effect of product brand etc., generate font is unintelligible, floating, it is imperfect, drag ink, bite, misplace, overlapping is smeared uneven
Etc. bad phenomenons, even result in ink and fall off, seriously affect the presentation quality in tool box.Realize fretting map technology in tool
The popularization and use in case field, this is a very urgent problem to be solved.
Summary of the invention
In order to solve the above problem, the present invention provide can silk-screen blow molding fretting map tool box and preparation method thereof, material of the present invention
Material molding abscess is fine and smooth, and cell density is high, and fretting map tool box surface is smooth, uniform, and paint can be smeared uniformly, be sprawled, texture
Abundant, screen printing paint bonding force is strong, and the test of 3M adhesive tape ink adhesion meets tool box silk-screen requirement, and can expire without falling off
The multiple types ink silk screen printings such as the aqueous, oiliness of foot, mixing, at the same also have light-weight, resiliency is good, good stability of the dimension, at
The features such as type period is short, and product qualified rate is high.
To achieve the above object, the present invention adopts the following technical scheme:
One kind can silk-screen be blow molded fretting map tool box material, the component including following parts by weight:
70-90 parts of polyethylene
5-15 parts of super-high fluidity polyethylene,
0-10 parts of filler,
1-10 parts of polarity modifier,
1-5 parts of compatilizer,
1-15 parts of toughener,
1-10 parts of foaming agent,
3-15 parts of blowing promotor,
0.5-2 parts of other auxiliary agents
Meet the fretting map tool box product cell diameter of appearance silk-screen requirement less than 80 microns, foam structure be ellipse or
It is round.
Further technical solution, the polyethylene are high density polyethylene (HDPE), linear low density polyethylene, metallocene PE
One of or two kinds of mixtures, preferred high density polyethylene (HDPE).The super-high fluidity polyethylene melt index is more than 150g/
10min；Preferred molten index is the super-high fluidity polyethylene of 1500g/10min.
Further technical solution, the filler be one of calcium carbonate, talcum powder, glass fibre, barium sulfate, preferably
Talcum powder.
Further technical solution, the polarity modifier are polyvinyl alcohol, pentaerythrite, triethylene glycol, polyether polyol, gather
One or both of ester polyol, polyethylene glycol, polyethylene glycol oxide, polymaleic anhydride, glycolic composition；Preferred alcohol acid
With the composition of polyether polyol.
Further technical solution, the compatilizer is functional graft polyolefin, for example, maleic anhydride grafted polyethylene,
Maleic anhydride grafted ethene-alpha olefin copolymer, methacrylic dehydrated glyceride grafted polyethylene etc., preferably maleic anhydride connects
Branch polyethylene.
Further technical solution, the toughener are that low density polyethylene (LDPE), ultra-high molecular weight polyethylene, ethylene-alpha-olefin are total
One of polymers, ethylene-vinyl acetate copolymer, EP rubbers, optimal ethylene-alpha olefin copolymer.
Further technical solution, the foaming agent is the combination of one or both of organic and inorganic type foaming agent, wherein having
Machine foaming agent is one of hydrazine and its derivative class foaming agent, azido compound, triazole type foaming agent, preferably nitrine chemical combination
Object, inorganic type foaming agent are attached most importance to one of carbonate, carbonate, bicarbonate, peroxide and its derivative, preferably
Bicarbonate.
Further technical solution, the blowing promotor are organic acid and its esters, such as stearic acid and its metallic salt, lemon
Lemon acid and its esters, yeast, adipic acid and its esters, salicylic acid and its salt derivative, chlorogenic acid and its esters etc., preferably water
Poplar acid and its esters；
Further technical solution, the auxiliary agent is dispersing agent and antioxidant, wherein the dispersing agent is oleamide, stearic acid fourth
One of rouge, polyethylene wax, tristerin, preferably polyethylene wax.The antioxidant is one of 1010,168.
It is a kind of can silk-screen blow molding fretting map tool box preparation method, comprising the following steps:
Step 1: by 70-90 parts of polyethylene, 5-15 parts of super-high fluidity polyethylene, 0-10 parts of filler, polarity modifier 1-10
Part, 1-5 parts of compatilizer, 1-15 parts of toughener, 1-10 parts of foaming agent, 3-15 parts of blowing promotor, 0.5-2 parts of other auxiliary agents are mixing
3-5min is mixed in machine, is added in double screw extruder by hopper, is granulated at a temperature of 130-210 DEG C, screw speed
200-800r/min obtains blow-molding polyethylene composite material；
Step 2: foaming agent is sufficiently mixed in high mixer in advance according to parts by weight, is then added by side spout
In single screw rod blow moulding machine；Meanwhile the composite polyethylene material that step 1 obtains is added to single screw rod blow moulding machine barrel；In 130-
It at a temperature of 210 DEG C, is blow molded, obtains the fretting map car duct with micro pore shape., wherein single screw rod blow moulding machine major diameter
Than more than 18:1, compression ratio is more than 20:1, and single screw rod blow moulding machine is divergence type, barrier type, one in bypass type screw rod blow moulding machine
Kind.It is preferred that draw ratio 22:1, compression ratio is the bypass type screw rod of 23:1.
Beneficial effect
Compared with prior art, the present invention has the advantage that
1, present invention obtains meet can silk screen printing process blow molding fretting map tool box, feature have foaming micropore average pore size it is small
In 80um, the defects of uniform foam cell, without collapsing realizes fretting map product densification smooth surface, still trace pit, meet silk-screen
Ink-printed surface requirement；Paint adhesion is strong, meets the ink of tool box 3M adhesive tape bonding test without the requirement of experiment that falls off.Separately
Outside, it also has many advantages, such as preferable rigidity, excellent resiliency, heat-insulated, sound insulation value, improves ride comfort.Product
Also there is good long term heat ageing performance, meet the experiment of tool box product high/low-temperature impact, low temperature drop test (- 40 DEG C)
Etc. requirement of experiment.
2, the present invention improves molecular weight of polyethylene distribution by super-high fluidity polyethylene, and using with toughener synergistic improves
The sag resistant ability and melt drawn performance in foaming process of polyethylene, meets tool box especially and has and high stretch knot
The tool box of structure is also conducive to increase bubble nucleating, reduces abscess-size, be conducive to product to the forming requirements of micro-foaming material
Smooth surface is formed, and the smooth smooth surface requirement of tool box silk-screen is met；It is residual can to reduce foaming agent decomposition for blowing promotor in the present invention
It stays, improves retention rate of the gas in blow-molding process, guarantee that product weight mitigates, while the compounding of organic and inorganic nucleating agent makes
With with stronger better cell nucleation activity, significant miniaturization abscess effect, increase cell density, stable bubble hole structure, benefit
In improvement tool box presentation quality.
3, by compatilizer and polarity modifier coordinative role, be effectively improved dispersion of the polarity modifier in polyethylene with
And the surface polarity of polythene material, enhance polyethylene to the adhesive force of ink for screen printing, reaches better silk-screen effect, meet water
Property, the various ink silk screen printings requirements such as oiliness, mixed type.
4, in the preparation method of material of the present invention, foaming agent is introduced by side feed material, this is conducive to that foaming agent is avoided to exist
Decomposition in advance in screw rod, the waste of gas improve foaming agent efficiency；On the other hand, preferred equipment screw rod can effectively change
Kind dispersion of the gas in polymer melt, enhances Gas nucleation, is conducive to the flatness for improving product appearance.
5, the present invention provides the preparation method of the material, and technique is controllable, and production cost is low, high-efficient, be easily achieved industry
Change.
Specific embodiment
Below with reference to embodiment, the present invention will be further described in detail.
Embodiment
It is a kind of can silk-screen blow molding fretting map tool box preparation method, comprising the following steps:
Step 1: by 70-90 parts of polyethylene, 5-15 parts of super-high fluidity polyethylene, 0-10 parts of filler, polarity modifier 1-10
Part, 1-5 parts of compatilizer, 1-15 parts of toughener, 1-10 parts of foaming agent, 3-15 parts of blowing promotor, 0.5-2 parts of other auxiliary agents are mixing
3-5min is mixed in machine, is added in double screw extruder by hopper, is granulated at a temperature of 130-210 DEG C, screw speed
200-800r/min obtains blow-molding polyethylene composite material；
Step 2: foaming agent is sufficiently mixed in high mixer in advance according to parts by weight, is then added by side spout
In single screw rod blow moulding machine；Meanwhile the composite polyethylene material that step 1 obtains is added to single screw rod blow moulding machine barrel；In 130-
It at a temperature of 210 DEG C, is blow molded, obtains the fretting map car duct with micro pore shape., wherein single screw rod blow moulding machine major diameter
Than more than 18:1, compression ratio is more than 20:1, and single screw rod blow moulding machine is divergence type, barrier type, one in bypass type screw rod blow moulding machine
Kind.It is preferred that draw ratio 22:1, compression ratio is the bypass type screw rod of 23:1.
Meet the fretting map tool box product cell diameter of appearance silk-screen requirement less than 80 microns, foam structure is ellipse
Or it is round.
The polyethylene is one of high density polyethylene (HDPE), linear low density polyethylene, metallocene PE or two
Kind mixture, preferably high density polyethylene (HDPE).The super-high fluidity polyethylene melt index is more than 150g/10min；Preferred molten
Index is the super-high fluidity polyethylene of 1500g/10min.
The filler is one of calcium carbonate, talcum powder, glass fibre, barium sulfate, preferably talc powder.
The polarity modifier is polyvinyl alcohol, pentaerythrite, triethylene glycol, polyether polyol, polyester polyol, poly- second two
One or both of alcohol, polyethylene glycol oxide, polymaleic anhydride, glycolic composition；Preferred alcohol acid and polyether polyol
Composition.
The compatilizer is functional graft polyolefin, for example, maleic anhydride grafted polyethylene, maleic anhydride is grafted second
Alkene-alpha olefin copolymer, methacrylic dehydrated glyceride grafted polyethylene etc., preferably maleic anhydride grafted polyethylene.
The toughener is low density polyethylene (LDPE), ultra-high molecular weight polyethylene, ethylene-alpha-olefin copolymer, ethyl vinyl acetate
One of ethylene copolymer, EP rubbers, optimal ethylene-alpha olefin copolymer.
The foaming agent is the combination of one or both of organic and inorganic type foaming agent, wherein organic foaming agent be hydrazine and
One of its derivative species foaming agent, azido compound, triazole type foaming agent, preferably azido compound, inorganic type foaming agent
Attach most importance to one of carbonate, carbonate, bicarbonate, peroxide and its derivative, preferably bicarbonate.
The blowing promotor is organic acid and its esters, such as stearic acid and its metallic salt, citric acid and its esters, ferment
Female, adipic acid and its esters, salicylic acid and its salt derivative, chlorogenic acid and its esters etc., preferably salicylic acid and its esters；
The auxiliary agent is dispersing agent and antioxidant, wherein the dispersing agent be oleamide, it is stearic acid butyl ester, polyethylene wax, hard
One of glycerol, preferably polyethylene wax.The antioxidant is one of 1010,168.
According to above-mentioned preparation method, comparative example 1, embodiment 1, embodiment 2, embodiment 3, embodiment 4, specific formula is as follows
Shown in table:
| Component | Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| High density polyethylene (HDPE) | 100 | 70 | 80 | ||
| Linear low density polyethylene | 90 | 75 | |||
| Super-high fluidity polyethylene | 15 | 5 | 10 | 8 | |
| Talcum powder | 10 | ||||
| Calcium carbonate | 7 | ||||
| Glass fibre | 3 | ||||
| Polyethylene glycol | 10 | ||||
| Glycolic | 1 | 2 | 1 | ||
| Polyether polyol | 3 | ||||
| Polyvinyl alcohol | 5 | ||||
| Maleic anhydride grafted polyethylene | 5 | 1 | |||
| Maleic anhydride grafted ethene-α ethylene copolymer | 2 | 3 | |||
| Ethylene-α ethylene copolymer | 10 | 8 | |||
| EP rubbers | 1 | 15 | |||
| Hydrazoic acid | 0.5 | 3 | |||
| Sodium bicarbonate | 0.5 | 4 | |||
| 4,4 '-bis oxide benzene sulfonyl hydrazides | 3 | 1 | |||
| Sodium carbonate | 7 | ||||
| Sodium citrate | 15 | ||||
| Stearic acid | 3 | ||||
| Salicylic acid | 10 | 5 | |||
| Antioxidant 1010 | 0.5 | 0.3 | 1 | 0.5 | 0.4 |
| Polyethylene wax | 0.2 | 1 | 0.6 | ||
| Oleamide | 1 |
To in upper table comparative example and embodiment detect, results of property is as shown in the table:
Product of the present invention comparative example and embodiment performance table
| Detection project | Standard | Comparative example 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Sag resistant performance/cm | JL method | 51 | 22 | 20 | 18 | 25 |
| Abscess average diameter/micron | JL method | 65 | 79 | 43 | 52 | |
| Cell density/x103A/cm3 | JL method | 3.68 | 3.31 | 4.02 | 3.43 | |
| Density/g/cm3 | ISO 1183 | 0.96 | 0.40 | 0.56 | 0.43 | 0.41 |
| Dyne value/dyne | Dyne technique of writing | 26 | 56 | 48 | 60 | 58 |
| Izod notched impact strength/kJ/m2(23 DEG C) | ISO 179 | NB | NB | NB | NB | NB |
Note: sag performance test conditions are 190 DEG C, testing time 30min, test bars sagging length, shorter testimonial material
Sag resistant is better.
As can be seen from the above results, compared with comparative example 1, the embodiment of the present invention 1, embodiment 2, embodiment 3, embodiment
4 sag resistant performances are more preferable, it is meant that in blow-molding process, melt stretch-proof effect of the present invention is more preferable, is conducive to maintain abscess steady
It is qualitative；Meanwhile by density as can be seen that product weight reduction at least 40% or more, ensure that the lightweight in fretting map tool box
And portability.Meanwhile cell diameter of the present invention is respectively less than 80 microns, can substantially reduce product visual defects, is advantageously implemented production
The flatness on product surface meets ink silk screen printing requirement；On the other hand, a dyne value of the invention is significantly higher than comparative example 1, illustrates to produce
The polarity of product is higher, it is meant that it is stronger with the binding force of ink, be conducive to ink product surface sprawl and uniformity, solve
Ink is uniformly smeared on the fretting map tool box and adhesion problem.
The foregoing is merely a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, any
Those skilled in the art's equivalent change or modification made by Spirit Essence according to the present invention, should all cover of the invention
Within protection scope.
Claims (12)
1. one kind can silk-screen be blow molded fretting map tool box, which is characterized in that material includes the component of following parts by weight:
70-90 parts of polyethylene
5-15 parts of super-high fluidity polyethylene
0-10 parts of filler,
1-10 parts of polarity modifier
1-5 parts of compatilizer
1-15 parts of toughener
1-10 parts of foaming agent
3-15 parts of blowing promotor
0.5-2 parts of other auxiliary agents.
2. according to claim 1 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the super-high fluidity is poly-
The melt index of ethylene is more than 150g/10min.
3. according to claim 2 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the super-high fluidity is poly-
The melt index of ethylene is 1500g/10min.
4. according to claim 1 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the polyethylene be it is highly dense
Spend one of polyethylene, linear low density polyethylene, metallocene PE or two kinds of mixtures；
The filler is one of calcium carbonate, talcum powder, glass fibre, barium sulfate；
The compatilizer is maleic anhydride grafted polyethylene, and maleic anhydride grafted ethene-alpha olefin copolymer, methacrylic acid are de-
It is a kind of in water glyceride grafted polyethylene；
The polarity modifier be polyvinyl alcohol, pentaerythrite, triethylene glycol, polyether polyol, polyester polyol, polyethylene glycol,
One or both of polyethylene glycol oxide, polymaleic anhydride, glycolic composition；
The toughener is low density polyethylene (LDPE), ultra-high molecular weight polyethylene, ethylene-alpha-olefin copolymer, ethene-vinyl acetate
One of copolymer, EP rubbers.
5. according to claim 4 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the filler be talcum
Powder, the compatilizer are maleic anhydride grafted polyethylene, and the toughener is ethylene-alpha-olefin copolymer, the polarity modifier
For the composition of glycolic and polyether polyol.
6. according to claim 1 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the foaming agent be have
The combination of one or both of machine, inorganic type foaming agent, wherein organic foaming agent is hydrazine and its derivative class foaming agent, Azide
Close object, one of triazole type foaming agent, inorganic type foaming agent is attached most importance to carbonate, carbonate, bicarbonate, peroxide
And its one of derivative；
The blowing promotor is organic acid and its esters, and organic acid and its esters promoter for blowing agent are stearic acid and its metal salt
One in class, citric acid and its esters, yeast, adipic acid and its esters, salicylic acid and its salt derivative, chlorogenic acid and its esters
Kind.
7. according to claim 1 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the organic foaming agent
For azido compound；The inorganic foaming agent is bicarbonate, and the blowing promotor is salicylic acid and its esters.
8. according to claim 1 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the auxiliary agent be dispersing agent
And antioxidant, wherein the dispersing agent is one of oleamide, stearic acid butyl ester, polyethylene wax, tristerin；
The antioxidant is one of 1010,168.
9. according to claim 1 can silk-screen be blow molded fretting map tool box material, it is characterised in that: the fretting map tool box
For the cell diameter of material less than 80 microns, foam structure is ellipse or circle.
10. described in claim any one of 1-9 can silk-screen blow molding fretting map tool box material preparation method, it is characterised in that:
The following steps are included:
Step 1: by 70-90 parts of polyethylene, 5-15 parts of super-high fluidity polyethylene, 0-10 parts of filler, polarity modifier 1-10
Part, 1-5 parts of compatilizer, 1-15 parts of toughener, 1-10 parts of foaming agent, 3-15 parts of blowing promotor, 0.5-2 parts of other auxiliary agents are mixing
3-5min is mixed in machine, is added in double screw extruder by hopper, is granulated at a temperature of 130-210 DEG C, screw speed
200-800r/min obtains blow-molding polyethylene composite material；
Step 2: foaming agent is sufficiently mixed in high mixer in advance according to parts by weight, is then added by side spout
In single screw rod blow moulding machine；Meanwhile the composite polyethylene material that step 1 obtains is added to single screw rod blow moulding machine barrel；In 130-
It at a temperature of 210 DEG C, is blow molded, obtains the fretting map tool box material with micro pore shape.
11. according to claim 10 can silk-screen blow molding fretting map tool box material preparation method, it is characterised in that: it is described
The step of two in, single screw rod blow moulding machine draw ratio is more than 18:1, and compression ratio is more than 20:1, and single screw rod blow moulding machine is divergence type, screen
One of barrier type, bypass type screw rod blow moulding machine.
12. according to claim 11 can silk-screen blow molding fretting map tool box material preparation method, it is characterised in that: it is described
Single screw rod blow moulding machine be draw ratio 22:1, compression ratio be 23:1 bypass type screw rod blow moulding machine.
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