CN109370079A - A kind of plastic film and its preparation process - Google Patents
A kind of plastic film and its preparation process Download PDFInfo
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- CN109370079A CN109370079A CN201811110090.4A CN201811110090A CN109370079A CN 109370079 A CN109370079 A CN 109370079A CN 201811110090 A CN201811110090 A CN 201811110090A CN 109370079 A CN109370079 A CN 109370079A
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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- C08J2325/00—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 an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
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- C08K7/00—Use of ingredients characterised by shape
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- C08K7/26—Silicon- containing compounds
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Abstract
The invention discloses a kind of plastic film and its preparation processes, are related to film production processing technique field, solve the problems, such as that film causes it to be easy to happen fracture because its integral strength is bad in use.A kind of plastic film, and the component including following parts by weight: 35~50 parts of polystyrene；12~20 parts of polyvinyl alcohol resin solution；6~11 parts of polycarbonate；5~8 parts of porous silica silica solution；4~9 parts of perlite powder；7~16 parts of bamboo fibre silk；4~5 parts of pentalyn；2.2~3.5 parts of plasticizer；0.8~1.5 part of antioxidant.Plastic film produced by the present invention has good structural strength in use, and is not susceptible to be broken, and has excellent durability.
Description
Technical field
The present invention relates to film production processing technique fields, more specifically, it relates to a kind of plastic film and its preparation
Technique.
Background technique
The film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, for packing, and
As coating layer, and plastic film can be used for food packaging, electric equipment products packaging, commodity packaging, garment packaging etc..
A kind of environmentally-friendly plastic film is disclosed in the Chinese invention patent of Publication No. CN107090124A comprising following
The component of parts by weight: 30~40 parts of polypropylene；20~25 parts of polyolefin；1~2 part of polyvinyl chloride；2~3 parts of glass fibre；Titanium white
10~13 parts of powder；5~8 parts of stearic acid；1~1.5 part of conductive black；4~5 parts of acrylate base monomer；0.5~1 part of elastomer.
In above-mentioned patent, glass fibre makes environmentally-friendly plastic film have good heat-insulating property and ageing-resistant performance, and is added
Glass fibre makes it have lower reflectivity and higher transparency, but the performance of glass fibre is more crisp, when environmentally-friendly plastic film
In use, internal glass fibre is easy to happen fracture, causes its integral strength to substantially reduce, and be easy to happen disconnected
It splits, it is, therefore, desirable to provide a kind of new scheme solves the above problems.
Summary of the invention
It is caused to be easy to happen asking for fracture because its integral strength is bad in use for film in the prior art
Topic, the purpose of the present invention one are to provide a kind of plastic film, by forming Multi-network in the inside of plastic film, with
Above-mentioned technical problem is solved, there is good structural strength in use, and be not susceptible to be broken.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of plastic film, the component including following parts by weight:
35~50 parts of polystyrene；
12~20 parts of polyvinyl alcohol resin solution；
6~11 parts of polycarbonate；
5~8 parts of porous silica silica solution；
4~9 parts of perlite powder；
7~16 parts of bamboo fibre silk；
4~5 parts of pentalyn；
2.2~3.5 parts of plasticizer；
0.8~1.5 part of antioxidant.
By using above-mentioned technical proposal, polystyrene is a kind of colorless and transparent thermoplastic plastic, with high saturating
Lightness and good processing fluidity, and resistance to chemical corrosion is good.Polyvinyl alcohol resin solution have good cementability and
Film forming is conducive to make each component close adhesion in plastic film together.Polycarbonate has in commonly used temperature
Good mechanical performance, and impact resistance is good, processing performance is good, and refractive index with higher, make plastic film have compared with
While high-intensitive, it may have good smooth write performance.The submissive of plastic film entirety can be improved in plasticiser and antioxidant
Property and stability.
Perlite powder is preheated by perlite ore, and the material of white granular is made after TRANSIENT HIGH TEMPERATURE calcining expansion
Expect, is honeycomb structure inside particle, and its surface is open bore, and the intensity of plastic film is made to be greatly enhanced.Meanwhile
There is pentalyn outstanding viscosity and internal cohesiveness, porous silica silica solution to be filled in inside expanded perlite
Aperture in, and in porous silica silica solution contain a large amount of porous silica silicon particle, porous silica can be made
Grain is adhered to inside expanded perlite on the side wall in aperture, greatly improves the structural strength of plastic film entirety.
Bamboo fibre silk has stronger wearability and break resistance, and ultrafine micropore structure special inside bamboo fibre silk
Powerful adsorption capacity is made it have, good associativity can be played with each component, obtains the toughness of plastic film entirety
It improves.Meanwhile bamboo fibre silk can be partially arranged in the inside aperture of expanded perlite and porous silica silicon particle, and and hole
Other bamboo fibre silks outside diameter are mutually wound, and porous silica silicon particle of the part containing bamboo fibre silk is fixed on expansion treasure
In aperture inside pearl rock, formed in the inside of plastic film by expanded perlite, porous silica silicon particle and bamboo fibre silk
The Multi-network of composition makes plastic film be not susceptible to be broken in use, and strong with well stable structure
Degree.
Further preferably, the porous silica silica solution is modified processing, and the step of modification is as follows:
Step a takes the porous silica silica solution of corresponding parts by weight, be added corresponding parts by weight and concentration be 0.75~
The 1 of 0.9mol/L, 3,5- trimethylbenzenes carry out constant temperature and are stirred, and temperature is 25~30 DEG C, and the time is 40~60min, stirring
Speed is 200~400rpm, obtains mixture；
Step b, the salt acid for adjusting pH value for being 0.1mol/L with concentration in mixture, makes pH value 5.5~6, obtains stoste；
The sticky particle of corresponding parts by weight is added in step c in stoste, carries out ultrasonic wave decentralized processing, is then placed in constant temperature
It is vibrated in water bath chader, the time is 60~90min, and temperature is 50~60 DEG C, obtains modified porous silica colloidal sol.
By using above-mentioned technical proposal, 1,3,5- trimethylbenzene is a kind of good expanding agent, can make porous dioxy
Aperture in SiClx colloidal sol inside porous silica silicon particle becomes clear and coherent, will not press together, global shape becomes full.
Be conducive to be adhered to sticky particle in the aperture inside porous silica silicon particle under acid condition.Meanwhile ultrasonication
Be conducive to that sticky particle is made uniformly to spread out, improve its adhesiving effect in porous silica silicon particle aperture.It is modified
Treated porous silica silica solution, sticky particle make bamboo fibre silk be tightly secured in the aperture inside silica dioxide granule
In, it is not susceptible to fall off, so that the porous network structure inside film is kept good stability, make the structure of plastic film entirety
Strength and stability greatly improves.
Further preferably, the polyethylene glycol that parts by weight are 0.5~0.8 part is additionally added in the plastic film.
By using above-mentioned technical proposal, polyethylene glycol is poly- good water solubility, and has with many organic constituents good
Good intermiscibility, and polyethylene glycol is a kind of good dispersing agent, and bamboo fibre silk can be made uniformly to spread out, and prevents bamboo fine
Dimension silk is adhered to each other in the inside aperture for causing it that can not be filled in expanded perlite and porous silica silicon particle, is conducive to
Make the Multi-network inside plastic film that there is good compactness, and there is good structural strength, makes plastic film
It is not susceptible to be broken.
Further preferably, the paraffin that parts by weight are 1.2~1.5 parts is additionally added in the plastic film.
By using above-mentioned technical proposal, paraffin is certain distillates from petroleum, shale oil or other pitch mineral oil
In a kind of hydrocarbon mixture for extracting, main component is solid alkane, odorless, tasteless, for white or faint yellow translucent solid
Body.Its gloss that can improve plastic products and demolding performace, and paraffin makes plastic film have good moisture-proof and insulating properties,
It is improved the overall performance of plastic film.Meanwhile the paraffin particles to spread out make the multimeshed network knot in plastic film
The sufficient drawout of structure comes, and is conducive to the structural strength for improving plastic film entirety.
Further preferably, the alumina powder that parts by weight are 0.6~0.9 part is additionally added in the plastic film.
By using above-mentioned technical proposal, alumina powder is a kind of compound of high rigidity, can greatly improve modeling
Expect the structural strength of film entirety, and alumina powder can be filled in expanded perlite, porous silica silicon particle and bamboo fibre
It ties up in the gap between silk, the inside of plastic film is made to become more closely knit.Meanwhile alumina powder is a kind of good fire resisting
Material keeps plastic film with good stability in actual use.
Further preferably, the plasticizer selects diisooctyl phthalate, dibutyl phthalate, tricresyl phosphate
Phenyl ester or polyurethane.
By using above-mentioned technical proposal, plasticizer is usually the substance of a kind of " class solvent ", be added to plastics, resin or
Their processability can be improved when in the substances such as elastomer, increase plasticity, flexibility, draftability or expansile substance.Add
The elasticity modulus of the melting viscosity of plastics, glass transition temperature and elastomer can be reduced by entering plasticizer, be plasticized without changing
The basic chemical characteristic of substance, is improved the overall structural strength of plastic film.
Further preferably, the antioxidant selects 2,6- di-tert-butyl-4-methy phenol, vitamin C, ethylenediamine tetraacetic
Acetic acid disodium or fourth hydroxyl methoxy benzene.
By using above-mentioned technical proposal, the effect of antioxidant be prevent plastic processes high temperature aoxidize so that
Plastic film retains its due performance to greatest extent after blow molding, has added antioxidant, has been able to extend plastic film
Service life, extend oxidation induction period, whole laser intensity can also be greatly improved, and reduce the light aging of plastic film
And thermal-oxidative degradation, keep it with good stability in actual use.
The purpose of the present invention two is to provide a kind of preparation process of plastic film, using the plastic film of technique preparation
There is good structural strength in use, and be not susceptible to be broken.
To achieve the above object two, the present invention provides the following technical scheme that
Step 1, by the polystyrene of corresponding parts by weight, polyvinyl alcohol resin solution and polycarbonate be put into reaction kettle into
The stirring of row constant temperature, mixing speed are 300~500rpm, and mixing time is 10~30min, and temperature maintains 80~100 DEG C；
Step 2 adds the porous silica silica solution, perlite powder and rosin pentaerythrite of corresponding parts by weight
Ester carries out constant temperature stirring, and mixing speed is 500~900rpm, and mixing time is 10~15min, and temperature maintains 60~80 DEG C；
Step 3 adds the bamboo fibre silk of corresponding parts by weight, carries out constant temperature stirring, and mixing speed is 4000~6000rpm,
Mixing time is 5~8min, and temperature maintains 50~60 DEG C, obtains mixing；
Step 4, is added the plasticizer and antioxidant of corresponding parts by weight in above-mentioned mixing, and 6 are kneaded with roll squeezer~
10min, the temperature of mixing are 110~130 DEG C, obtain mixture；
Mixture is put into plastic film blowing machine and squeezes out blown film by step 5, and plastic film can be obtained.
By using above-mentioned technical proposal, make expanded perlite, porous silica are evengranular to spread out, makes more
Hole silica dioxide granule is adhered to inside expanded perlite on the side wall in aperture by pentalyn, and is conducive to make portion
Point bamboo fibre silk can be arranged in the inside aperture of expanded perlite and porous silica silicon particle, and with other outside aperture
Bamboo fibre silk is mutually wound, and is formed Multi-network in the inside of plastic film, is not easy plastic film in use
It is broken, and there is well stable structural strength.
Further preferably, step 5 specifically comprises the following steps, by the ethylene-vinyl alcohol copolymer of corresponding parts by weight
Heating melting is carried out with ethylene-vinyl acetate copolymer, and curtain coating casting is carried out using multi-layer co-extruded the tape casting together with mixture
Piece, and sided corona treatment is carried out, obtain the fresh-keeping fit film of high temperature resistant with multi-layer structure.
By using above-mentioned technical proposal, the most distinguishing feature of EVOH resin is its barrier action to gas, and is had
Good thermal stability, ethylene-vinyl acetate copolymer are closed blasthole structure, weather-proof, anti-droplet with higher and heat preservation
Performance.After ethylene-vinyl alcohol copolymer and ethylene-vinyl acetate copolymer are melted, and it is manufactured together with mixture
Multi-layer co-extruded membrane structure greatly improves the overall performance of the fresh-keeping fit film of high temperature resistant, and is not susceptible to be broken.Meanwhile it carrying out
Sided corona treatment makes the fresh-keeping fit film surface of high temperature resistant generate radical reaction and crosslink polymer, improves its surface
Adhesive force makes it have good using effect.
In conclusion compared with prior art, the invention has the following advantages:
(1) by the way that perlite powder, porous silica silica solution and bamboo fibre silk is added, make the integral strength of plastic film
It is improved, and expanded perlite, porous silica silicon particle and bamboo fibre silk pass through rosin season penta in the inside of plastic film
Four alcohol esters form Multi-network, substantially increase the structural strength of plastic film entirety, do not make it in use not
Easily it is broken；
(2) by being modified processing to porous silica silica solution, make to fill in the aperture inside porous silica silicon particle
Have an adhered particles, and sticky particle be tightly secured in bamboo fibre silk inside silica dioxide granule aperture in, be not susceptible to take off
It falls, so that the porous network structure inside film is kept good stability, make the structural strength and stability of plastic film entirety
It greatly improves；
(3) by the way that alumina powder is added, the structural strength of plastic film entirety can be greatly improved, and alumina powder can
Become the inside of plastic film in the gap that is filled between expanded perlite, porous silica silicon particle and bamboo fibre silk
Must be more closely knit, overall flexibility greatly improves, and is not susceptible to be broken in use.
Specific embodiment
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1: a kind of plastic film, each component and its corresponding parts by weight are as shown in table 1, and as follows
It prepares:
Step 1, by the polystyrene of corresponding parts by weight, polyvinyl alcohol resin solution and polycarbonate be put into reaction kettle into
The stirring of row constant temperature, mixing speed 500rpm, mixing time 30min, temperature maintain 80 DEG C；
Step 2 adds the porous silica silica solution, perlite powder and rosin pentaerythrite of corresponding parts by weight
Ester, carries out constant temperature stirring, mixing speed 900rpm, mixing time 15min, and temperature maintains 60 DEG C；
Step 3, adds the bamboo fibre silk of corresponding parts by weight, carries out constant temperature stirring, mixing speed 6000rpm, when stirring
Between be 8min, temperature maintains 60 DEG C, obtains mixing；
The dibutyl phthalate and disodium ethylene diamine tetraacetate of corresponding parts by weight is added in step 4 in above-mentioned mixing,
And it is kneaded 10min with roll squeezer, the temperature of mixing is 110 DEG C, obtains mixture；
Mixture is put into plastic film blowing machine and squeezes out blown film by step 5, and plastic film can be obtained.
Embodiment 2-8: a kind of plastic film, difference from example 1 is that, each component and its corresponding parts by weight
Number is as shown in table 1.
Each component and its parts by weight in 1 embodiment 1-8 of table
Embodiment 9: a kind of plastic film, difference from example 1 is that, porous silica silica solution is modified place
Reason, and the step of modification is as follows:
Step a takes the porous silica silica solution of corresponding parts by weight, and it is 10:1 and concentration that weight fraction ratio corresponding to its, which is added,
It is the 1 of 0.75mol/L, 3,5- trimethylbenzenes carry out constant temperature and are stirred, and temperature is 25 DEG C, time 60min, mixing speed
For 400rpm, mixture is obtained；
Step b, the salt acid for adjusting pH value for being 0.1mol/L with concentration in mixture, makes pH value 6, obtains stoste；
The ultra-fine grain silicon nitride that weight fraction ratio corresponding to its is 10:1 is added in stoste, carries out ultrasonic wave dispersion by step c
Processing, is then placed in thermostatic control oscillator vibration and is vibrated, time 60min, and temperature is 60 DEG C, obtains modified porous dioxy
SiClx colloidal sol.
Embodiment 10: a kind of plastic film, the difference is that, step 3 is specifically configured to: being added with embodiment 9
Corresponding parts by weight are 16 parts of bamboo fibre silk and 0.5 part of polyethylene glycol, carry out constant temperature stirring, mixing speed 6000rpm,
Mixing time is 8min, and temperature maintains 60 DEG C, obtains mixing.
Embodiment 11: a kind of plastic film, the difference is that, the parts by weight of polyethylene glycol are arranged with embodiment 10
It is 0.7 part.
Embodiment 12: a kind of plastic film, the difference is that, the parts by weight of polyethylene glycol are arranged with embodiment 10
It is 0.8 part.
Embodiment 13: a kind of plastic film, the difference is that, step 4 is specifically configured to: upper with embodiment 12
State dibutyl phthalate, the 1.5 parts of disodium ethylene diamine tetraacetates and 1.2 for being added that corresponding parts by weight are 3.5 parts in mixing
The paraffin of part, and it is kneaded 10min with roll squeezer, the temperature of mixing is 110 DEG C, obtains mixture.
Embodiment 14: a kind of plastic film, the difference is that, the parts by weight of paraffin are set as with embodiment 13
1.3 part.
Embodiment 15: a kind of plastic film, the difference is that, the parts by weight of paraffin are set as with embodiment 13
1.5 part.
Embodiment 16: a kind of plastic film, the difference is that, step 2 is specifically configured to embodiment 15: again plus
Enter corresponding parts by weight be 5 parts of porous silica silica solution, 9 parts of perlite powder, 4 parts of pentalyn and
0.6 part of alumina powder carries out constant temperature stirring, and mixing speed is 500~900rpm, and mixing time is 10~15min, temperature
Maintain 60~80 DEG C.
Embodiment 17: a kind of plastic film, the difference is that, the parts by weight of alumina powder are set with embodiment 16
It is set to 0.8 part.
Embodiment 18: a kind of plastic film, the difference is that, the parts by weight of alumina powder are set with embodiment 16
It is set to 0.9 part.
Embodiment 19: a kind of plastic film, with embodiment 18 the difference is that, the O-phthalic of corresponding parts by weight
Dibutyl phthalate replaces with triphenyl phosphate.
Embodiment 20: a kind of plastic film, with embodiment 18 the difference is that, the ethylenediamine tetraacetic of corresponding parts by weight
Acetic acid disodium replaces with fourth hydroxyl methoxy benzene.
Embodiment 21: a kind of plastic film, the difference is that, step 5 specifically includes following step with embodiment 18
It suddenly, will be respectively the ethylene-vinyl alcohol copolymer of 1:1 and the ethylene-vinyl acetate copolymer of 1:1 with mixture weight fraction ratio
Heating melting is carried out, and curtain coating slab is carried out using multi-layer co-extruded the tape casting together with mixture, and carry out sided corona treatment, is obtained
The fresh-keeping fit film of high temperature resistant with multi-layer structure.
Comparative example 1: a kind of plastic film, difference from example 1 is that, expanded pearlite is not contained in raw material components
Rock powder end.
Comparative example 2: a kind of plastic film, difference from example 1 is that, bamboo fibre is not contained in raw material components
Silk.
Comparative example 3: a kind of plastic film, difference from example 1 is that, porous dioxy is not contained in raw material components
SiClx colloidal sol.
Comparative example 4: a kind of plastic film, difference from example 1 is that, rosin season penta is not contained in raw material components
Four alcohol esters.
Comparative example 5: a kind of plastic film, difference from example 1 is that, expanded pearlite is not contained in raw material components
Rock powder end and porous silica silica solution.
Comparative example 6: a kind of plastic film, difference from example 1 is that, rosin season penta is not contained in raw material components
Four alcohol esters and bamboo fibre silk.
Comparative example 7: a kind of plastic film, difference from example 1 is that, porous dioxy is not contained in raw material components
SiClx colloidal sol and bamboo fibre silk.
Comparative example 8: a kind of plastic film, difference from example 1 is that, expanded pearlite is not contained in raw material components
Rock powder end and pentalyn.
Comparative example 9: a kind of plastic film, difference from example 1 is that, expanded pearlite is not contained in raw material components
Rock powder end, porous silica silica solution and bamboo fibre silk.
Comparative example 10: a kind of plastic film, difference from example 1 is that, it is precious without containing expansion in raw material components
Pearl rock powder end, porous silica silica solution, bamboo fibre silk and pentalyn.
Test tensile strength test
Test specimen: using the plastic film obtained in embodiment 1-21 as test specimen 1-21, using in comparative example 1-10
The plastic film of acquisition is as control sample 1-10.
Test method: tensile strength refers to that material bears maximum stress value before breaking, respectively from test specimen 1-21 and right
10 samples are respectively chosen in product 1-10 in the same old way, is prepared by sample, by the GB/T1040.3-2006 " survey of plastic tensile performance
Examination " in regulation carry out.AG-5000 type universal testing machine is selected to measure 10 examinations of each test specimen and control sample
The tensile strength of sample calculates the average value of 10 sample tensile strengths.
Test result: the test result of test specimen 1-21 and control sample 1-10 are as shown in table 2.
The test result of table 2 test specimen 1-21 and control sample 1-10
As shown in Table 2, it can be obtained by the control of the tensile strength of test specimen 1-21 and control sample 1-10, swelling perlite powder is added
End, porous silica silica solution and bamboo fibre silk, are improved the integral strength of plastic film, and expanded perlite, porous
Silica dioxide granule and bamboo fibre silk form Multi-network by pentalyn in the inside of plastic film, greatly
The structural strength of plastic film entirety is improved greatly.Meanwhile processing is modified to porous silica silica solution, poly- second two is added
Pure and mild alumina powder can improve the tensile strength of plastic film entirety, and ethylene-vinyl alcohol copolymer and ethylene-is added
Acetate ethylene copolymer substantially increases the tensile strength of plastic film entirety, makes it have by being made by co-extrusion to multilayered structure
Good stability.
Testing two resistance to tear can test
Test specimen: using the plastic film obtained in embodiment 1-21 as test specimen 1-21, using in comparative example 1-10
The plastic film of acquisition is as control sample 1-10.
Test method: tearing strength refers to that material bears maximum stress value before breaking, respectively from test specimen 1-21 and right
10 samples are respectively chosen in product 1-10 in the same old way, is prepared by sample, " plastic film and thin slice are resistance to by GB/T16578.1-2108
Tear the measurement of performance " in regulation carry out.Select each test specimen of SLD-1000Z plastic film tear-resistant degree instrument measurement and right
The tearing strength of 10 samples of product in the same old way, calculates the average value of 10 sample tearing strengths.
Test result: the tearing strength intensity of test specimen 1-21 and control sample 1-10 is as shown in table 3.
The test result of table 3 test specimen 1-21 and control sample 1-10
As shown in Table 3, it can be obtained by the control of the tearing strength of test specimen 1-21 and control sample 1-10, swelling perlite powder is added
End, porous silica silica solution and bamboo fibre silk, are improved the integral strength of plastic film.And modified porous dioxy
SiClx colloidal sol, sticky particle makes bamboo fibre silk be tightly secured in the aperture inside silica dioxide granule in porous silica silicon particle
In, it is not susceptible to fall off, so that the porous network structure inside film is kept good stability, make the structure of plastic film entirety
Strength and stability greatly improves.Meanwhile polyethylene glycol and alumina powder is added, it can improve resistance to the tearing of plastic film entirety
Intensity, and ethylene-vinyl alcohol copolymer and ethylene-vinyl acetate copolymer is added by being made by co-extrusion to multilayered structure, make plastics
The resistance to intensity of tearing of film greatly improves.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of plastic film, which is characterized in that the component including following parts by weight:
35~50 parts of polystyrene；
12~20 parts of polyvinyl alcohol resin solution；
6~11 parts of polycarbonate；
5~8 parts of porous silica silica solution；
4~9 parts of perlite powder；
7~16 parts of bamboo fibre silk；
4~5 parts of pentalyn；
2.2~3.5 parts of plasticizer；
0.8~1.5 part of antioxidant.
2. plastic film according to claim 1, which is characterized in that the porous silica silica solution is modified place
Reason, and the step of modification is as follows:
Step a takes the porous silica silica solution of corresponding parts by weight, be added corresponding parts by weight and concentration be 0.75~
The 1 of 0.9mol/L, 3,5- trimethylbenzenes carry out constant temperature and are stirred, and temperature is 25~30 DEG C, and the time is 40~60min, stirring
Speed is 200~400rpm, obtains mixture；
Step b, the salt acid for adjusting pH value for being 0.1mol/L with concentration in mixture, makes pH value 5.5~6, obtains stoste；
The sticky particle of corresponding parts by weight is added in step c in stoste, carries out ultrasonic wave decentralized processing, is then placed in constant temperature
It is vibrated in water bath chader, the time is 60~90min, and temperature is 50~60 DEG C, obtains modified porous silica colloidal sol.
3. plastic film according to claim 1, which is characterized in that being additionally added parts by weight in the plastic film is
0.5~0.8 part of polyethylene glycol.
4. plastic film according to claim 1, which is characterized in that being additionally added parts by weight in the plastic film is
1.2~1.5 parts of paraffin.
5. plastic film according to claim 1, which is characterized in that being additionally added parts by weight in the plastic film is
0.6~0.9 part of alumina powder.
6. plastic film according to claim 1, which is characterized in that the plasticizer selects phthalic acid two different pungent
Ester, dibutyl phthalate, triphenyl phosphate or polyurethane.
7. plastic film according to claim 1, which is characterized in that the antioxidant selects 2,6- di-t-butyl -4-
Methylphenol, vitamin C, disodium ethylene diamine tetraacetate or fourth hydroxyl methoxy benzene.
8. a kind of preparation process of plastic film, which comprises the following steps:
Step 1, by the polystyrene of corresponding parts by weight, polyvinyl alcohol resin solution and polycarbonate be put into reaction kettle into
The stirring of row constant temperature, mixing speed are 300~500rpm, and mixing time is 10~30min, and temperature maintains 80~100 DEG C；
Step 2 adds the porous silica silica solution, perlite powder and rosin pentaerythrite of corresponding parts by weight
Ester carries out constant temperature stirring, and mixing speed is 500~900rpm, and mixing time is 10~15min, and temperature maintains 60~80 DEG C；
Step 3 adds the bamboo fibre silk of corresponding parts by weight, carries out constant temperature stirring, and mixing speed is 4000~6000rpm,
Mixing time is 5~8min, and temperature maintains 50~60 DEG C, obtains mixing；
Step 4, is added the plasticizer and antioxidant of corresponding parts by weight in above-mentioned mixing, and 6 are kneaded with roll squeezer~
10min, the temperature of mixing are 110~130 DEG C, obtain mixture；
Mixture is put into plastic film blowing machine and squeezes out blown film by step 5, and plastic film can be obtained.
9. the preparation process of plastic film according to claim 8, which is characterized in that step 5 specifically includes following step
Suddenly, the ethylene-vinyl alcohol copolymer of corresponding parts by weight and ethylene-vinyl acetate copolymer are subjected to heating melting, and and mixed
Refining object carries out curtain coating slab using multi-layer co-extruded the tape casting together, and carries out sided corona treatment, obtains resistance to height with multi-layer structure
The fresh-keeping fit film of temperature.
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