CN108623875A - A kind of High-strength air-permeable film composite material and preparation method - Google Patents
A kind of High-strength air-permeable film composite material and preparation method Download PDFInfo
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- 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
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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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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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Abstract
The invention discloses a kind of High-strength air-permeable film composite material and preparation methods, by 21 44 parts of bimodal polyethylene, 8 15 parts of metallocene PE, 38 parts of high density polyethylene (HDPE), 45 55 parts of inorganic filler, 0.1 1 parts of antioxidant, 0.5 1 parts of lubricant, 0.2 1 parts of coupling agent are made through mixing, extruding pelletization.Ventilated membrane disclosed by the invention uses composite material to select bimodal polyethylene as base-material, the puncture resistance of product is adjusted with metallocene PE, resurrection material obtained can give full play to the characteristics such as high intensity of high molecular weight in bimodal polyethylene, good paracentesis resistance with metallocene PE again, the film prepared is set to have the function of waterproof and breathable and very high moisture-vapor transmission, more than 2000g/ ㎡/for 24 hours；The backing materials such as paper diaper, sanitary napkin are suitable as, the comfort that can improve user can ensure that gas permeability again.
Description
Technical field
The present invention relates to a kind of modified material technical fields, and in particular to a kind of High-strength air-permeable film composite material and its
Preparation method.
Background technology
Waterproof ventilated membrane is the common consumer goods in daily life, as waterproof ventilated membrane can be made into wadding, plastic paper, packet
Pack, diaper, paper diaper, bandage, sanitary napkin, surgical drape etc..
As it is known by the man skilled in the art that waterproof ventilated membrane can by by thermoplastic polymer and filler mix into
Prepared by row, then stretch ventilated membrane so that ventilative to achieve the effect that forming gap close to the place of filler particles.
With the development of requirement, market demands reduce the thickness of ventilated membrane, in addition to reach 20g/ ㎡ or less with
Product cost is reduced, while the grammes per square metre of ventilated membrane reduces the comfort that can also improve human body.It certainly will thus require to ventilated membrane
The intensity etc. of composite material has higher requirement.
Chinese Patent Application No. provides a kind of compound breath film, mainly structure design for 201120300754, uses
It is compound that dry wall paper replaces non-woven fabrics to be carried out with waterproof ventilated membrane, improves flexibility and skin feel, is used for paper diaper or health
The products such as towel.
Patent publication No. provides a kind of air permeable waterproof curtain coating membrane material for CN105268013A, uses the poly- second of high pressure
Alkene, low-pressure polyethylene, linear polyethylene, metallocene, polypropylene and additive are blended, and obtained casting films are more soft, still
Its intensity difference.
Chinese patent 200810220057.7 discloses a kind of composite material preparing high-strength polyolefin permeable membrane and side
Method improves the performance of composite material in terms of the modification of the nano-sized filler used and common micro-scaled filler.
Therefore, although above-mentioned file discloses different ventilated membranes, complicated, cost that there are still production technologies compared with
Defect high, intensity is low.
Invention content
The object of the present invention is to provide a kind of ventilated membrane composite materials at low cost, high intensity.
Technical scheme is as follows：
A kind of High-strength air-permeable film composite material is prepared by weight by following components：
The melt flow rate (MFR) of further scheme, the bimodal polyethylene is 1.5- under the conditions of 190 DEG C/2.16kg
5.5g/10min, tensile strength are more than 15MPa, and tension fracture elongation rate is more than 500%.The bimodal polyethylene is selected to can ensure that
Air film also has the elongation of stronger intensity after the stretch.
The metallocene PE melt flow rate (MFR) is 2.5-3.5g/10min under the conditions of 190 DEG C/2.16kg.
It is furthermore preferred that the melting temperature of the metallocene PE is 118-129 DEG C, crystallization temperature is 107-116 DEG C.This
The metallocene PE that invention selection is refered in particular to can ensure that ventilated membrane has preferable puncture resistance.
The high density polyethylene (HDPE) melt flow rate (MFR) is 0.5-1.5g/10min under the conditions of 190 DEG C/2.16kg.It selects
This specific high density polyethylene (HDPE) can ensure that the ventilated membrane after stretching has certain feel and stiffening property；
The above-mentioned bimodal polyethylene, metallocene PE, high density polyethylene (HDPE) for melting finger is selected to ensure that composite material can be most
The mode of curtain coating is selected to produce ventilated membrane eventually.
The inorganic filler is grain size d50For 2-5 μm of calcium carbonate.Select the calcium carbonate that can integrate the ventilative of ventilated membrane
Amount and the dispersibility with base material.
The antioxidant is four [β-(3,5- di-t-butyl 4- hydroxy phenyls) propionic acid] pentaerythritol esters (1010), β-
(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester (1076), three-(2,4- di-tert-butyl-phenyl) phosphite esters
(168), at least one of double octadecyls (DSTDP) of thio-2 acid.
The lubricant is the mixture of one or both of calcium stearate, ethylene Stearyl Amine (EBS).
The coupling agent is at least one of silane coupling agent, titanate coupling agent.
A kind of preparation method of High-strength air-permeable film composite material, first by 21-44 parts of bimodal polyethylene, the poly- second of metallocene
8-15 parts of alkene, 3-8 parts of high density polyethylene (HDPE), 45-55 parts of inorganic filler, 0.1-1 parts of antioxidant, 0.5-1 parts of lubricant, coupling agent
0.2-1 parts are added high mixer and carry out mixing 5-15min；Then uniformly mixed material is added twin-screw extrude through mixed
Refining squeezes out, and obtains High-strength air-permeable film composite material；The extrusion temperature difference in section is wherein respectively squeezed out in double screw extruder
It is 150-170 DEG C, 170-185 DEG C, 175-185 DEG C, 175-185 DEG C, 175-185 DEG C, 180-190 DEG C, 180-195 DEG C, 180-
195℃、180-195℃、185-200℃。
Ventilated membrane disclosed by the invention uses composite material to select bimodal polyethylene as base-material, is adjusted with metallocene PE
The puncture resistance of product, composite material obtained can give full play to the spies such as high intensity of high molecular weight in bimodal polyethylene
Property, and the good paracentesis resistance with metallocene PE.
The present invention selects specific bimodal polyethylene, metallocene PE, high density polyethylene (HDPE) to ensure composite material energy
The mode of final choice curtain coating produces ventilated membrane.Specially：
1, melt flow rate (MFR) is selected to be more than for 1.5-5.5g/10min, tensile strength under the conditions of 190 DEG C/2.16kg
15MPa, bimodal polyethylene of the tension fracture elongation rate more than 500% can ensure that ventilated membrane also has stronger intensity after the stretch
Elongation；
2, to select melt flow rate (MFR) be 2.5-3.5g/10min under the conditions of 190 DEG C/2.16kg, melting temperature 118-
129 DEG C, crystallization temperature be 107-116 DEG C of metallocene PE can ensure that ventilated membrane have preferable puncture resistance；
3, it is the high density of 0.5-1.5g/10min under the conditions of 190 DEG C/2.16kg that the present invention, which selects melt flow rate (MFR),
Polyethylene can ensure that the ventilated membrane after stretching has certain feel and stiffening property.
4, selection grain size d50For 2-5 μm of calcium carbonate can integrate ventilated membrane Air permenbility and with the dispersibility of base material.
5, ventilated membrane composite material preparation process disclosed by the invention is simple, at low cost, coordinates casting films processing technology,
It is easier to produce the casting films with waterproof and breathable function, while casting films prepared by the composite material have very high vapor saturating
Rate is crossed, more than 2000g/ ㎡/for 24 hours；The backing materials such as paper diaper, sanitary napkin are suitable as, the comfort of user can be improved
It can ensure that gas permeability again.And have the characteristics that intensity is high, cost simple for process is relatively low compared with ad eundem permeability casting films,
It is the ventilative membrane material that a kind of simple production process, cost are relatively low and are combined with good mechanical properties and permeability.
Specific implementation mode
The melt flow rate (MFR) of bimodal polyethylene used in following each embodiments is under the conditions of 190 DEG C/2.16kg
1.5-5.5g/10min tensile strength is more than 15MPa, tension fracture elongation rate is more than 500%；
The metallocene PE melt flow rate (MFR) is 2.5-3.5g/10min under the conditions of 190 DEG C/2.16kg, melts
Temperature is 118-129 DEG C, crystallization temperature is 107-116 DEG C.
The high density polyethylene (HDPE) melt flow rate (MFR) is 0.5-1.5g/10min under the conditions of 190 DEG C/2.16kg.
The grain size d of the inorganic filler calcium carbonate50It is 2-5 μm.
Embodiment 1
Raw material is weighed by component in table 1 and proportioning (parts by weight)
In high-speed mixer and mixing 5min, above-mentioned raw material are uniformly mixed, mixed blend is squeezed by twin-screw
Go out machine extruding pelletization, each area's temperature of extruder be followed successively by from feeding section to head temperature 150 DEG C, 170 DEG C, 175 DEG C, 175 DEG C,
175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, extrusion screw rod draw ratio is 40, and extrusion screw rod rotating speed is 350 revs/min
Clock.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 2
Raw material is weighed by component in table 1 and proportioning (parts by weight)
In high-speed mixer and mixing 10min, above-mentioned raw material are uniformly mixed, mixed blend is squeezed by twin-screw
Go out machine extruding pelletization, each area's temperature of extruder be followed successively by from feeding section to head temperature 170 DEG C, 185 DEG C, 185 DEG C, 185 DEG C,
185 DEG C, 190 DEG C, 195 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, extrusion screw rod draw ratio is 36, and extrusion screw rod rotating speed is 350 revs/min
Clock.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 3
Raw material is weighed by component in table 1 and proportioning (parts by weight)
In high-speed mixer and mixing 15min, above-mentioned raw material are uniformly mixed, mixed blend is squeezed by twin-screw
Go out machine extruding pelletization, each area's temperature of extruder be followed successively by from feeding section to head temperature 150 DEG C, 170 DEG C, 175 DEG C, 175 DEG C,
175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 195 DEG C, extrusion screw rod draw ratio is 40, and extrusion screw rod rotating speed is 350 revs/min
Clock.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 4
Raw material is weighed by component in table 1 and proportioning (parts by weight)
In high-speed mixer and mixing 15min, above-mentioned raw material are uniformly mixed, mixed blend is squeezed by twin-screw
Go out machine extruding pelletization, each area's temperature of extruder be followed successively by from feeding section to head temperature 160 DEG C, 175 DEG C, 175 DEG C, 180 DEG C,
185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C, 195 DEG C, extrusion screw rod draw ratio is 44, and extrusion screw rod rotating speed is 300 revs/min
Clock.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 5
Raw material is weighed by component in table 1 and proportioning (parts by weight)
In high-speed mixer and mixing 15min, above-mentioned raw material are uniformly mixed, mixed blend is squeezed by twin-screw
Go out machine extruding pelletization, each area's temperature of extruder be followed successively by from feeding section to head temperature 160 DEG C, 175 DEG C, 180 DEG C, 180 DEG C,
185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C, extrusion screw rod draw ratio is 36, and extrusion screw rod rotating speed is 400 revs/min
Clock.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 6
Raw material is weighed by component in table 1 and proportioning (parts by weight)
In high-speed mixer and mixing 15min, above-mentioned raw material are uniformly mixed, mixed blend is squeezed by twin-screw
Go out machine extruding pelletization, each area's temperature of extruder be followed successively by from feeding section to head temperature 160 DEG C, 170 DEG C, 175 DEG C, 175 DEG C,
185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C, extrusion screw rod draw ratio is 40, and extrusion screw rod rotating speed is 400 revs/min
Clock.The mixture being prepared is tested for the property, test result is shown in Table 2.
Table 1:Formula composition
Table 2:Performance test
Comparative example 1
Following material, 10 parts of high density polyethylene (HDPE), 8 parts of low density polyethylene (LDPE), linear low density polyethylene are weighed by weight
8 parts of alkene, 9 parts of metallocene PE, 10 parts of polypropylene, 1,250 55 parts of mesh calcium carbonate, 1 part of antioxidant 1010 are silane coupled
1 material of comparative example is made according to 1 technique of embodiment in 1 part of KH550 agent, 0.4 part of calcium stearate, 0.2 part of EBS.Comparative example 1 is made
Standby obtained mixture is tested for the property, and test result is shown in Table 3.
Table 3
| Test event/unit | Testing standard | Embodiment 1 | Comparative example 1 |
| Melt finger/g/10min | ISO 1133 | 3.1 | 3.5 |
| Tensile strength/Mpa | ISO 527 | 22.2 | 15.6 |
| Puncture resistant ability/N | GB/T 10004 | 32.2 | 9.4 |
| Gas permeability/g/ ㎡/for 24 hours | GB/T 21529 | 2065 | 1855 |
It is good that obtained composite material tensile strength height, puncture resistance are can be seen that by table 2,3 data of table；And
By higher moisture-vapor transmission.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (10)
1. a kind of High-strength air-permeable film composite material, it is characterised in that：It is prepared by weight by following components：
21-44 parts of bimodal polyethylene,
8-15 parts of metallocene PE,
3-8 parts of high density polyethylene (HDPE),
45-55 parts of inorganic filler,
0.1-1 parts of antioxidant,
0.5-1 parts of lubricant,
0.2-1 parts of coupling agent.
2. a kind of High-strength air-permeable film composite material according to claim 1, it is characterised in that：The bimodal polyethylene
Density be 0.9-0.95g/cm3, molecular weight 150000-1200000, and its tensile strength is more than 15MPa, tension failure and stretches
Long rate is more than 500%.
3. a kind of High-strength air-permeable film composite material according to claim 1, it is characterised in that：The poly- second of metallocene
The melt flow rate (MFR) of alkene is 2.5-3.5g/10min under the conditions of 190 DEG C/2.16kg.
4. a kind of High-strength air-permeable film composite material according to claim 3, it is characterised in that：The poly- second of metallocene
The melting temperature of alkene is 118-129 DEG C, crystallization temperature is 107-116 DEG C.
5. according to a kind of High-strength air-permeable film composite material described in claim 1, it is characterised in that：The high density is poly-
The melt flow rate (MFR) of ethylene is 0.5-1.5g/10min under the conditions of 190 DEG C/2.16kg.
6. according to a kind of High-strength air-permeable film composite material described in claim 1, it is characterised in that：The inorganic filler
For grain size d50For 2-5 μm of calcium carbonate.
7. according to a kind of High-strength air-permeable film composite material described in claim 1, it is characterised in that：The antioxidant is
Four [β-(3,5- di-t-butyl 4- hydroxy phenyls) propionic acid] pentaerythritol esters, β-(3,5- di-t-butyl -4- hydroxy benzenes
Base) propionic acid n-octadecyl alcohol ester, three-(2,4- di-tert-butyl-phenyl) phosphite esters, in the double octadecyls of thio-2 acid
It is at least one.
8. according to a kind of High-strength air-permeable film composite material described in claim 1, it is characterised in that：The lubricant is
At least one of calcium stearate, ethylene bis stearamide.
9. according to a kind of High-strength air-permeable film composite material described in claim 1, it is characterised in that：The coupling agent is
At least one of silane coupling agent, titanate coupling agent.
10. a kind of preparation method of High-strength air-permeable film composite material as described in claim 1, it is characterised in that：It will be double
Polyethylene 21-44 parts of peak, 8-15 parts of metallocene PE, 3-8 parts of high density polyethylene (HDPE), 45-55 parts of inorganic filler, antioxidant
0.1-1 parts, 0.5-1 parts of lubricant, 0.2-1 parts of coupling agent are added high mixer and carry out mixing 5-15min；Then by be uniformly mixed
Material is added twin-screw extrude through being kneaded, squeezing out, and obtains High-strength air-permeable film composite material；Wherein in double screw extruder
Each extrusion temperature for squeezing out section is 150-170 DEG C respectively, 170-185 DEG C, 175-185 DEG C, 175-185 DEG C, 175-185 DEG C,
180-190℃、180-195℃、180-195℃、180-195℃、185-200℃。
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110509646A (en) * | 2019-09-19 | 2019-11-29 | 四川厚诚新材料有限公司 | A kind of high anti-puncture curtain coating polyethylene film and preparation method thereof |
| CN111704766A (en) * | 2020-07-16 | 2020-09-25 | 陕西富隆新塑材有限公司 | High-strength polyethylene agricultural mulching film and preparation method thereof |
| CN111909430A (en) * | 2020-07-16 | 2020-11-10 | 山东恒鹏卫生用品有限公司 | Breathable film composite material applied to medical protective clothing |
| CN112194839A (en) * | 2020-09-18 | 2021-01-08 | 中天（中国）工业有限公司 | High-strength PE cast film and preparation method thereof |
| CN113480796A (en) * | 2021-06-16 | 2021-10-08 | 广州爱科琪盛塑料有限公司 | Breathable film and preparation method thereof |
| CN113493583A (en) * | 2021-04-25 | 2021-10-12 | 深圳市卓宝科技股份有限公司 | Composition for improving root puncture resistance of coiled material |
| CN114806002A (en) * | 2022-05-31 | 2022-07-29 | 广州爱科琪盛塑料有限公司 | Breathable film and preparation method and application thereof |
| CN115558263A (en) * | 2022-09-30 | 2023-01-03 | 北京小鹿科技有限公司 | Bacteriostatic paper diaper with high air permeability and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110509646A (en) * | 2019-09-19 | 2019-11-29 | 四川厚诚新材料有限公司 | A kind of high anti-puncture curtain coating polyethylene film and preparation method thereof |
| CN111704766A (en) * | 2020-07-16 | 2020-09-25 | 陕西富隆新塑材有限公司 | High-strength polyethylene agricultural mulching film and preparation method thereof |
| CN111909430A (en) * | 2020-07-16 | 2020-11-10 | 山东恒鹏卫生用品有限公司 | Breathable film composite material applied to medical protective clothing |
| CN112194839A (en) * | 2020-09-18 | 2021-01-08 | 中天（中国）工业有限公司 | High-strength PE cast film and preparation method thereof |
| CN113493583A (en) * | 2021-04-25 | 2021-10-12 | 深圳市卓宝科技股份有限公司 | Composition for improving root puncture resistance of coiled material |
| CN113480796A (en) * | 2021-06-16 | 2021-10-08 | 广州爱科琪盛塑料有限公司 | Breathable film and preparation method thereof |
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