CN103965564B - Plasticized polyvinyl chloride material and preparation method thereof - Google Patents
Plasticized polyvinyl chloride material and preparation method thereof Download PDFInfo
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- CN103965564B CN103965564B CN201310030898.2A CN201310030898A CN103965564B CN 103965564 B CN103965564 B CN 103965564B CN 201310030898 A CN201310030898 A CN 201310030898A CN 103965564 B CN103965564 B CN 103965564B
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Abstract
The present invention relates to a novel and non-toxic plasticized polyvinyl chloride material, which comprises A) 100 parts by weight of a PVC resin, B) 20-80 parts by weight of one or a plurality of main plasticizers selected from cyclohexane-1,2-diformate diisooctyl, cyclohexane-1,2-diformate diisononyl, tributyl citrate and acetyl tributyl citrate, and C) 5-20 parts by weight of an ethylene-vinyl acetate-carbonyl copolymer adopted as an auxiliary plasticizer. The material has characteristics of no toxicity, environmental protection, no plasticizer emigration phenomenon, good transparency, suitable processing temperature and excellent comprehensive mechanical property, and can be widely used in the field of food packaging, medical devices and the like. The present invention further relates to a preparation method of the plasticized polyvinyl chloride material, and an application of the plasticized polyvinyl chloride material in food packaging and medical devices.
Description
Technical field
The present invention relates to a kind of plasticised polyvinyl chloride material, the material non-toxic can be in fields such as packaging for foodstuff, medical apparatus and instruments
Extensively apply, be particularly useful for food pack and film, tube for transfusion, transfusion bag, blood transfusion tube, transfusion bags.The invention further relates to described
The preparation method and application of material.
Background technology
Polrvinyl chloride (hereafter abbreviation PVC sometimes) class material has a wide range of applications in armarium, and main cause exists
There is good physical property in polyvinyl chloride material itself.Specifically, these physical propertys include：PVC material is processed
Convenience and this kind of material and intravenous fluid and blood between the good compatibility.The hardness of pure PVC material, flexibility etc.
Intrinsic property can be improved by the addition of plasticizer.The effect of plasticizer is：Increase the flexibility of polymer, stretch
Long rate or the convenience of process (processing).
In terms of medical treatment and nursing (for example：Intravenous injection bags of blood, intravenous tube, artificial kidney connective tissue conduit, bubbling
Type oxygenator, enema drainage bag and urethral catheterization drainage bag) all contain in commonly used PVC classes product phthalic acid two oneself
Ester (hereafter vehicle economy HP sometimes) plasticizer.DEHP is used as one of most economical effective and widely used plasticizer, its work
With being to make PVC that there is flexibility and flexibility.
But, discovered in recent years, the phthalic ester plasticizer such as DEHP can occur leaching phenomenon in use,
Cause patient's intake or absorb a certain amount of such plasticizer.Once but produce phthalate plasticizers absorption, lead to
Often think these plasticizers can be stored in fatty tissue in and deformity can be caused.People also suspect that DEHP can cause endocrine
Disorder, affect the health of reproductive system, affect the health of anemia of pregnant woman and ewborn infant, and have with male genital extremely
Certain relation.Many countries, take certain measure one after another to such plasticizer：European Union and the U.S. forbid less than 3 years old child
Toy and articles for use use phthalic ester plasticizer, Japan to forbid adding such plasticising in medical apparatus and instruments Related product
Agent, China also take some restrictions to such plasticizer at present.
Therefore, it is badly in need of using the plasticizer of new asepsis environment-protecting being modified PVC at present.Patent DE29824628
Hexamethylene -1,2- dicarboxylic ester the plasticising by preparing corresponding phthalic acid ester hydrogenation is disclosed with WO99/32427
Agent, such plasticizer have relatively low density and viscosity, cause the low-temperature pliability of plastics to change than corresponding phthalic acid ester
It is kind.Also there is the mechanical performance of literature review plastics obtained by which identical with what is obtained with phthalic acid ester, and asepsis environment-protecting, can
To replace phthalic ester plasticizer to be used in package plastics of food, medical apparatus and instruments and toy for children.Current BASF is
Jing starts to produce in a large number Hexamoll DINCH products (DINCH be hexamethylene -1, the abbreviation of 2- dioctyl phthalate dinonyls), and
Applied on many packagings for foodstuff abroad and medical apparatus and instruments.Other non-toxic, environmental friendly plasticizers also have citrate,
Vegetable oil, polymeric plasticizer etc..
Ethene-vinyl acetate-carbonyl (abbreviation EVACO) is a kind of ethylene-dien terpolymer, it is known that can be used as the plasticising of PVC
Agent.Compared with EVA, EVACO improves polarity due to introducing carbonyl in the molecular structure, promotes compatible with PVC.EVACO
Can be to stop the migration and extraction of simple plasticizer as the maximum feature of flexible PVC modifying agent, but its plasticizing efficiency is not
Such as low molecule ester plasticizer.
The content of the invention
In view of above-mentioned condition of the prior art, present inventor has carried out depth in plasticised polyvinyl chloride Material Field
Enter and widely study, to finding a kind of polrvinyl chloride material that nontoxic, transparent, processing temperature is suitable, mechanical performance is excellent
Material.As a result find, will be selected from hexamethylene -1,2- dioctyl phthalate di-isooctyls, hexamethylene -1,2- dioctyl phthalate dinonyls, citric acid
One or more in tributyl and tributyl 2-acetylcitrate these four plasticizers is used as primary plasticizer and ethene-vinyl acetate
Ester-carbonyl copolymer combines as co-plasticizer and carrys out plasticized PVC, is capable of achieving object defined above.Ethylene-vinyl acetate-carbonyl
Copolymer not only can further prevent primary plasticizer from from PVC migrating and extract out, and also show toughening effect to PVC,
So that plasticization can be improved not only but also toughness and elasticity can be improved.The present inventor is based on above-mentioned discovery and completes the present invention.
Therefore, it is an object of the present invention to provide a kind of plasticised polyvinyl chloride material, the material non-toxic, excellent transparency,
Processing temperature is suitable, excellent comprehensive mechanical property.
Another object of the present invention is to a kind of method for preparing plasticised polyvinyl chloride material of the present invention is provided, by the party
Method can easily be obtained the material of the present invention.
It is still another object of the present invention to provide plasticised polyvinyl chloride material of the present invention is in packaging for foodstuff and medical apparatus and instruments
Purposes.
Realize that the technical scheme of above-mentioned purpose of the present invention can be summarized as follows：
1st, a kind of plasticised polyvinyl chloride material, which includes following component：
A) the polyvinyl chloride resin of 100 weight portions；
B) the primary plasticizer that one or more of 20-80 weight portions is selected from the group：Hexamethylene -1,2- dioctyl phthalate di-isooctyls
(DEHCH), hexamethylene -1,2- dioctyl phthalate dinonyl (DINCH), tributyl citrate (TBC) and tributyl 2-acetylcitrate
(ATBC)；And
C) ethylene-vinyl acetate-carbonyl copolymer (EVACO) of the 5-20 weight portions as co-plasticizer.
2nd, the plasticised polyvinyl chloride material according to the 1st, wherein the polyvinyl chloride resin is flat comprising 20-40 weight %
The average degree of polymerization of the right PVC resin with low degree of polymerization and 60-80 weight % for 1000-1500, in particular 1000-1300 of homopolymerization
For the PVC with high of 2000-2700, in particular 2000-2500, more preferably described polyvinyl chloride resin includes 20-32 weight %
Average degree of polymerization be the average poly- of the PVC resin with low degree of polymerization and 68-80 weight % of 1000-1500, in particular 1000-1300
The right PVC with high for 2000-2700, in particular 2000-2500, the gross weight based on the polyvinyl chloride resin.
3. the plasticised polyvinyl chloride material according to the 1st or 2, wherein by hexamethylene -1,2- dioctyl phthalate di-isooctyls
And/or the combination of hexamethylene -1,2- dioctyl phthalate dinonyl and tributyl citrate and/or tributyl 2-acetylcitrate is with deciding
Plasticiser.
4. the plasticised polyvinyl chloride material according to any one of 1-3 items, wherein in ethylene-vinyl acetate-carbonyl
In base co-polymer, the content of ethylene monomer unit is 58-70 weight %, and the content of vinyl acetate units is 20-32 weight %,
It is 7-15 weight % with the content of carbonyl unit, the gross weight based on ethylene-vinyl acetate-carbonyl copolymer；Preferably,
In ethylene-vinyl acetate-carbonyl copolymer, the content of ethylene monomer unit is 60-68 weight %, vinyl acetate units
Content be 23-30%, and the content of carbonyl unit be usually 8-12 weight %, based on ethylene-vinyl acetate-carbonyl copolymerization
The gross weight of thing；Particularly preferably the Elvaloy741 types and/or Elvaloy742 type resins of du pont company are used as second
Alkene-vinylacetate-carbonyl copolymer.
5. the plasticised polyvinyl chloride material according to any one of 1-4 items, the wherein material are based on every 100 weight portion
Comprising polyvinyl chloride resin comprising 30-70 weight portions primary plasticizer and 5-15 parts the ethene-vinyl acetate as co-plasticizer
Ester-carbonyl copolymer.
6. the plasticised polyvinyl chloride material according to any one of 1-5 items, the wherein material are based on every 100 weight portion
Comprising polyvinyl chloride resin, also comprising following component：
D) the epoxy soybean oil of 1-10 weight portions；
E) the phosphorous acid three (nonyl phenyl ester) of 0.1-1.0 weight portions；
F) the polymethylphenyl siloxane fluid of 0.1-1.0 weight portions；And
G) the calcium-zinc composite stabilizing agent of 0.4-2.0 weight portions.
7. the plasticised polyvinyl chloride material according to any one of 1-6 items, comprising following component：
A) the polyvinyl chloride resin of 100 weight portions；
B) the plasticizer of 30-70 weight portions；
C) the ethylene-vinyl acetate of 5-15 weight portions-carbonyl copolymer；
D) the epoxy soybean oil of 1-5 weight portions；
E) the phosphorous acid three (nonyl phenyl ester) of 0.1-0.5 weight portions；
F) the polymethylphenyl siloxane fluid of 0.1-0.5 weight portions；And
G) the calcium-zinc composite stabilizing agent of 0.7-1.5 weight portions.
8. a kind of method of the plasticised polyvinyl chloride material prepared as any one of 1-7 items, including：
1) mix homogeneously in high-speed mixer by polyvinyl chloride resin and other components in addition to component C；And
2) by step 1) in obtain mixture be transferred on double roll mill, add component C kneaded, obtain plasticising
Pvc material.
9. the method according to the 8th, wherein step 1) in be blended at a temperature of 85-95 DEG C and carry out 15-
20min；And/or step 2) in mixing 15-20min is carried out at 155-165 DEG C.
10. use of the plasticised polyvinyl chloride material according to any one of 1-7 in packaging for foodstuff and medical apparatus and instruments
On the way, the purposes especially in food pack and film, tube for transfusion, transfusion bag, blood transfusion tube, transfusion bags.
Specific embodiment
According to an aspect of the invention, there is provided a kind of plasticised polyvinyl chloride material, which includes following component：
A) the polyvinyl chloride resin of 100 weight portions；
B) the primary plasticizer that one or more of 20-80 weight portions is selected from the group：Hexamethylene -1,2- dioctyl phthalate di-isooctyls
(DEHCH), hexamethylene -1,2- dioctyl phthalate dinonyl (DINCH), tributyl citrate (TBC) and tributyl 2-acetylcitrate
(ATBC)；And
C) ethylene-vinyl acetate-carbonyl copolymer of the 5-20 weight portions as co-plasticizer.
In the present invention, PVC used as matrix material, for the material has no particular limits, all may be used by hard, flexible PVC
Use.
In a preferred embodiment of the invention, it is average comprising 20-40 weight % as the polyvinyl chloride resin of component A
The degree of polymerization is that the average degree of polymerization of the PVC resin with low degree of polymerization and 60-80 weight % of 1000-1500, in particular 1000-1300 is
The PVC with high of 2000-2700, in particular 2000-2500, includes 20-32 more preferably as the polyvinyl chloride resin of component A
The average degree of polymerization of weight % is the PVC resin with low degree of polymerization and 68-80 weight % of 1000-1500, in particular 1000-1300
PVC with high of the average degree of polymerization for 2000-2700, in particular 2000-2500, the gross weight based on the polyvinyl chloride resin
Amount.In material of the present invention, PVC resin with low degree of polymerization can improve material mobility in process, reduce processing temperature
Degree, and PVC with high can make the flexibility and elasticity of material be improved significantly.
In the present invention, it is therein a kind of or several using DEHCH, DINCH, TBC, ATBC as the primary plasticizer of component B
Kind.These four plasticizers are all non-toxic, environmental friendly plasticizers, and polarity is larger, fine with the PVC compatibilitys.
Cyclohexane-carboxylic acid esters plasticizer has more excellent low-temperature pliability and volatility resistance than citric acid ester plasticizer,
But plasticizing efficiency and heat stability are more slightly worse than citric acid ester plasticizer, this two classes plasticizer compounding is added in PVC, can be with
Obtain the more excellent plasticised polyvinyl chloride material of combination property.Therefore, be preferably for the purpose of the present invention, by DEHCH and/or
The combination plasticiser of deciding of DINCH and TBC and/or ATBC.
In plasticised polyvinyl chloride material of the present invention, the polyvinyl chloride resin of every 100 weight portion, the content of primary plasticizer are usually
20-80 weight portions, preferred 30-70 weight portions, particularly preferred 40-60 weight portions.
In the present invention, combined with primary plasticizer as co-plasticizer using ethylene-vinyl acetate-carbonyl copolymer
Use.Secondary plasticizer(-iser) used according to the invention be ethylene-vinyl acetate-carbonyl terpolymer (EVACO), the copolymer
Chemical constitution it is as follows：
EVACO is a kind of high molecular weight copolymer, in the present invention not only can Reinforced PVC toughness and elasticity, and not
Can easily migrate as liquid plasticizer and ooze out.EVACO can by by carbon monoxide and ethylene and it is vinyl acetate copolymerized and
Obtain.In EVACO, the content of ethylene monomer unit is usually 58-70 weight %, and the content of vinyl acetate units is usually
20-32 weight %, and the content of carbonyl unit be usually 7-15 weight %, the gross weight based on EVACO.Preferably, exist
In EVACO, the content of ethylene monomer unit is usually 60-68 weight %, and the content of vinyl acetate units is usually 23-
30%, and the content of carbonyl unit be usually 8-12 weight %, the gross weight based on EVACO.
In a special embodiment of the present invention, the polymer modifiers ethylene-vinyl acetate as component C-
Carbonyl copolymer, using Elvaloy741 types and/or Elvaloy742 resins from du pont company.
In plasticised polyvinyl chloride material of the present invention, the polyvinyl chloride resin of every 100 weight portion, the content of co-plasticizer EVACO lead to
It is often 5-20 weight portions, preferred 5-15 weight portions, particularly preferred 7-15 weight portions.
In the plasticised polyvinyl chloride material of the present invention, other usual auxiliaries, such as other plasticizers, profit can also be included
Lubrication prescription, stabilizer, antioxidant etc..
For example, for reduces cost, material of the present invention can also every 100 weight portion PVC include 1-10 weight portions, preferred 1-5
The epoxy soybean oil of weight portion.
Material of the present invention can also every 100 weight portion PVC include 0.1-1.0 weight portions, preferred 0.1-0.5 weight portions phosphorous acid
Three (nonyl phenyl esters) are used as antioxidant and age resistor.
Material of the present invention can also every 100 weight portion PVC include 0.1-1.0 weight portions, preferred 0.1-0.5 weight portions benzyl
Silicone oil is used as lubricant.
Material of the present invention can also every 100 weight portion PVC include 0.4-2.0 weight portions, the calcium zinc of preferred 0.7-1.5 weight portions
Complex stabilizer, to suppress degradeds of the PVC in processing.Calcium-zinc composite stabilizing agent is the hot worked conventional stabilizer of PVC material,
It can by by the one kind in calcium stearate and zinc stearate and polyhydric alcohol, phosphite ester, beta-diketon, zeolite and brucite or
It is various compounding and obtain.For the present invention, the complex stabilizer with calcium stearate and zinc stearate as main component can all be used.
In a particularly preferred embodiment of the present invention, the plasticised polyvinyl chloride material of the present invention is comprising such as the following group
Point：
A) the polyvinyl chloride resin of 100 weight portions；
B) the plasticizer of 30-70 weight portions；
C) the ethylene-vinyl acetate of 5-15 weight portions-carbonyl copolymer；
D) the epoxy soybean oil of 1-5 weight portions；
E) the phosphorous acid three (nonyl phenyl ester) of 0.1-0.5 weight portions；
F) the polymethylphenyl siloxane fluid of 0.1-0.5 weight portions；And
G) the calcium-zinc composite stabilizing agent of 0.7-1.5 weight portions.
In order to prepare the plasticised polyvinyl chloride material of the present invention, present invention also offers a kind of method for preparing it.
Therefore, according to a further aspect in the invention, there is provided a kind of method for preparing plasticised polyvinyl chloride material of the present invention,
The method includes：
1) mix homogeneously in high-speed mixer by polyvinyl chloride resin and other components in addition to component C；And
2) by step 1) in obtain mixture be transferred on double roll mill, add component C kneaded, obtain plasticising
Pvc material.
Step 1) additive of small molecule and polyvinyl chloride resin are carried out pre-dispersed, the additive of small molecule can be prevented double
Occur to reunite and cause dispersion uneven when roller is kneaded.Due to the polarity of component C it is larger, by which individually in step 2) in add, can
Disperse uneven because of the impact of component C with the additive for preventing small molecule.
Preferably, step 1) in be blended at a temperature of 85-95 DEG C and carry out 15-20min.Step 2) in mixing
15-20min is carried out at 155-165 DEG C.
The step of preparation method of the present invention 1) in, it is advantageous to the temperature of high-speed mixer be 85-95 DEG C, during mixing
Between be 15-20min, blade rotating speed 900-1100rpm.
The step of the inventive method 2) in, it is advantageous to the melting temperature of double roll mill be 155-165 DEG C, mixing
Time is 15-20min, roller spacing 1-3mm, roller rotating speed 40-55rpm.
The plasticised polyvinyl chloride material of the present invention has advantages below：Non-toxic, environmental friendly plasticizer is employed, can be used to eat
The field such as product packaging and medical device, is safe from harm to human body.Selected plasticizer polarity is larger, and the compatibility with PVC is good,
It is uniformly dispersed, and is difficult from material internal in use to move out, and causes the processing temperature of material to be reduced to 160
DEG C, compared to the PVC material of the phthalic acid ester plasticising such as DEHP, its have more excellent low-temperature pliability, tensile strength and
Elongation at break etc., and add less amount of plasticizer just reach preferable performance requirement.In addition, adding in material of the present invention
EVACO type modifiers, be a kind of high-molecular copolymer, be capable of the toughness and elasticity of Reinforced PVC, and will not be as liquid
Plasticizer equally produces migration, is a kind of permanent plasticizer, and interception is played in the migration and extraction to primary plasticizer.When
The polyvinyl chloride resin of the present invention is former as main body using the mixture and high polymerization degree resin of high polymerization degree resin and oligomeric resin
During material, (degree of polymerization is in 1050- for all substantially more common pvc material of the flexibility of gained plastification material, elasticity and intensity
1100) it is good, particularly cryogenic property.The plasticised polyvinyl chloride of the present invention also has the excellent transparency, is particularly well-suited to
The product required by the transparency.
Therefore, plasticised polyvinyl chloride material of the invention is particularly suitable for the fields such as packaging for foodstuff and medical device.
Therefore, it is of the invention in terms of last, there is provided the plasticised polyvinyl chloride material spy of the present invention is in food
Purposes in packaging and medical device, the especially use in food pack and film, tube for transfusion, transfusion bag, blood transfusion tube, transfusion bags
On the way.
Embodiment
In each of the embodiments described below, if being not particularly illustrated, each component content uses parts by weight.
In following embodiment, gained plasticised polyvinyl chloride material is tested using following methods：
Ballistic method brittle temperature：GB/T5470-2008
Impact strength：GB/T1843-2008, tests at -30 DEG C.
Tensile property：GB/T528-1992
Hardness：GB/T531-1999
Volatility：ASTMD1023-94(2003)
Embodiment 1
By the high DP PVC that PVC resin with low degree of polymerization that 25 parts of averages degree of polymerization are 1050,75 parts of degree of polymerization are 2400
The calcium-zinc composite stabilizing agent (from the 106-8 types of Shanghai Yong Yan Chemical Industry Science Co., Ltd) of resin and 1.2 parts is initially charged at a high speed
Mixer, starts stirring, and blade rotating speed is 950rpm, and temperature rises to 90 DEG C, keeps rotating speed and temperature, sequentially add 45 parts
DEHCH plasticizers, 5 parts of epoxy soybean oil, the polymethylphenyl siloxane fluid of 0.4 part of phosphorous acid three (nonyl phenyl ester) and 0.3 part, stirring
After mixing 15min, mixture is transferred in double roll mill and is kneaded with 10 parts of Elvaloy741, melting temperature control
At 165 DEG C, roller spacing is 2min, and roller rotating speed is 55rpm, and mixing time is 15min, the blend for then obtaining mixing
Make sample and tested through extrusion, pelletize, injection again.
Each test result is shown in Tables 1 and 2.
Embodiment 2
Repeat embodiment 1, difference is：Make the PVC resin with low degree of polymerization that average degree of polymerization is 1050 into 37 parts,
Average degree of polymerization is that 2400 PVC with high makes 63 parts into.
Each test result is shown in Tables 1 and 2.
Embodiment 3
Repeat embodiment 1, difference is：High DP PVC is replaced with into the PVC of average degree of polymerization 2100.
Each test result is shown in Tables 1 and 2.
Embodiment 4
Repeat embodiment 1, difference is：The number of Elvaloy741 is changed to into 18 parts.
Each test result is shown in Tables 1 and 2.
Comparative example 5
Repeat embodiment 1, difference is：It is added without Elvaloy741.
Each test result is shown in Tables 1 and 2.
Embodiment 6
Repeat embodiment 1, difference is：45 parts of DEHCH plasticizers are changed to into 20 parts of DEHCH and 25 part of ATBC's
Mixed plasticizer.
Each test result is shown in Tables 1 and 2.
Embodiment 7
Repeat embodiment 1, difference is：The addition of DEHCH is changed to into 70 parts.
Each test result is shown in Tables 1 and 2.
Embodiment 8
Repeat embodiment 1, difference is：45 parts of DEHCH is changed to DEHCH and 15 part of 15 parts of ATBC.
Each test result is shown in Tables 1 and 2.
Embodiment 9
Repeat embodiment 1, difference is：PVC resin with low degree of polymerization is replaced with into the PVC that average degree of polymerization is 1450.
Each test result is shown in Tables 1 and 2.
Embodiment 10
Repeat embodiment 1, difference is：45 parts of DEHCH plasticizers are changed to DINCH and 25 part of 20 parts
TBC。
Each test result is shown in Tables 1 and 2.
Embodiment 11
Repeat embodiment 1, difference is：The number of Elvaloy741 is changed to into 6 parts.
Each test result is shown in Tables 1 and 2.
Embodiment 12
Repeat embodiment 1, difference is：45 parts of DEHCH plasticizers are changed to into 45 parts of ATBC plasticizers.
Each test result is shown in Tables 1 and 2.
Embodiment 13
Repeat embodiment 1, difference is：100 parts of polyvinyl chloride resin all adopt average degree of polymerization for 1100 PVC
Resin.
Each test result is shown in Tables 1 and 2.
Embodiment 14
Repeat embodiment 1, difference is：100 parts of polyvinyl chloride resin all adopt average degree of polymerization for 2400 PVC
Resin.
Each test result is shown in Tables 1 and 2.
Comparative example 15
Repeat embodiment 12, difference is：It is added without Elvaloy741.
Each test result is shown in Tables 1 and 2.
Embodiment 16
Repeat embodiment 1, difference is：It is added without epoxy soybean oil, phosphorous acid three (nonyl phenyl ester) and benzyl
Silicone oil.
Each test result is shown in Tables 1 and 2.
Table 1
Table 2
Claims (23)
1. a kind of plasticised polyvinyl chloride material, which includes following component：
A) the polyvinyl chloride resin of 100 weight portions；
B) the primary plasticizer that one or more of 30-70 weight portions is selected from the group：Hexamethylene -1,2- dioctyl phthalate di-isooctyls
(DEHCH), hexamethylene -1,2- dioctyl phthalate dinonyl (DINCH), tributyl citrate (TBC) and tributyl 2-acetylcitrate
(ATBC)；And
C) ethylene-vinyl acetate-carbonyl copolymer (EVACO) of the 5-15 weight portions as co-plasticizer.
2. plasticised polyvinyl chloride material according to claim 1, wherein the polyvinyl chloride resin is flat comprising 20-40 weight %
Height of the average degree of polymerization of the right PVC resin with low degree of polymerization and 60-80 weight % for 1000-1500 of homopolymerization for 2000-2700
Degree of polymerization polyvinyl chloride resin, the gross weight based on the polyvinyl chloride resin.
3. plasticised polyvinyl chloride material according to claim 1, wherein the polyvinyl chloride resin is flat comprising 20-40 weight %
Height of the average degree of polymerization of the right PVC resin with low degree of polymerization and 60-80 weight % for 1000-1300 of homopolymerization for 2000-2500
Degree of polymerization polyvinyl chloride resin, the gross weight based on the polyvinyl chloride resin.
4. plasticised polyvinyl chloride material according to claim 1, wherein the polyvinyl chloride resin is flat comprising 20-32 weight %
Height of the average degree of polymerization of the right PVC resin with low degree of polymerization and 68-80 weight % for 1000-1500 of homopolymerization for 2000-2700
Degree of polymerization polyvinyl chloride resin, the gross weight based on the polyvinyl chloride resin.
5. plasticised polyvinyl chloride material according to claim 1, wherein the polyvinyl chloride resin is flat comprising 20-32 weight %
Height of the average degree of polymerization of the right PVC resin with low degree of polymerization and 68-80 weight % for 1000-1300 of homopolymerization for 2000-2500
Degree of polymerization polyvinyl chloride resin, the gross weight based on the polyvinyl chloride resin.
6. plasticised polyvinyl chloride material according to claim 1, wherein by hexamethylene -1,2- dioctyl phthalate di-isooctyl and/
Or the combination modeling of deciding of hexamethylene -1,2- dioctyl phthalate dinonyl and tributyl citrate and/or tributyl 2-acetylcitrate
Agent.
7. plasticised polyvinyl chloride material according to claim 2, wherein by hexamethylene -1,2- dioctyl phthalate di-isooctyl and/
Or the combination modeling of deciding of hexamethylene -1,2- dioctyl phthalate dinonyl and tributyl citrate and/or tributyl 2-acetylcitrate
Agent.
8. plasticised polyvinyl chloride material according to claim 3, wherein by hexamethylene -1,2- dioctyl phthalate di-isooctyl and/
Or the combination modeling of deciding of hexamethylene -1,2- dioctyl phthalate dinonyl and tributyl citrate and/or tributyl 2-acetylcitrate
Agent.
9. plasticised polyvinyl chloride material according to claim 4, wherein by hexamethylene -1,2- dioctyl phthalate di-isooctyl and/
Or the combination modeling of deciding of hexamethylene -1,2- dioctyl phthalate dinonyl and tributyl citrate and/or tributyl 2-acetylcitrate
Agent.
10. plasticised polyvinyl chloride material according to claim 5, wherein by hexamethylene -1,2- dioctyl phthalate di-isooctyl and/
Or the combination modeling of deciding of hexamethylene -1,2- dioctyl phthalate dinonyl and tributyl citrate and/or tributyl 2-acetylcitrate
Agent.
The 11. plasticised polyvinyl chloride materials according to any one of claim 1-10, wherein ethylene-vinyl acetate-
In carbonyl copolymer, the content of ethylene monomer unit is 58-70 weight %, and the content of vinyl acetate units is 20-32 weights
%, and the content of carbonyl unit are measured for 7-15 weight %, the gross weight based on ethylene-vinyl acetate-carbonyl copolymer.
12. plasticised polyvinyl chloride materials according to claim 11, wherein in ethylene-vinyl acetate-carbonyl copolymer
In, the content of ethylene monomer unit is 60-68 weight %, and the content of vinyl acetate units is 23-30%, and carbonyl unit
Content is usually 8-12 weight %, the gross weight based on ethylene-vinyl acetate-carbonyl copolymer.
13. plasticised polyvinyl chloride material according to claim 11, wherein using the Elvaloy741 of du pont company
Type and/or Elvaloy742 types resin are used as ethylene-vinyl acetate-carbonyl copolymer.
The 14. plasticised polyvinyl chloride materials according to any one of claim 1-10, the wherein material are based on every 100 weight
Primary plasticizer of the polyvinyl chloride resin included by part comprising 40-60 weight portions and the ethyl vinyl acetate second as co-plasticizer of 7-15 parts
Alkene ester-carbonyl copolymer.
15. plasticised polyvinyl chloride materials according to claim 11, the wherein material are included based on every 100 weight portion
Primary plasticizer of the polyvinyl chloride resin comprising 40-60 weight portions and the ethylene-vinyl acetate-carbonyl as co-plasticizer of 7-15 parts
Copolymer.
16. plasticised polyvinyl chloride materials according to claim 12, the wherein material are included based on every 100 weight portion
Primary plasticizer of the polyvinyl chloride resin comprising 40-60 weight portions and the ethylene-vinyl acetate-carbonyl as co-plasticizer of 7-15 parts
Copolymer.
17. plasticised polyvinyl chloride materials according to claim 13, the wherein material are included based on every 100 weight portion
Primary plasticizer of the polyvinyl chloride resin comprising 40-60 weight portions and the ethylene-vinyl acetate-carbonyl as co-plasticizer of 7-15 parts
Copolymer.
The 18. plasticised polyvinyl chloride materials according to any one of claim 1-10, the wherein material are based on every 100 weight
The polyvinyl chloride resin included by part, also comprising following component：
D) the epoxy soybean oil of 1-10 weight portions；
E) the phosphorous acid three (nonyl phenyl ester) of 0.1-1.0 weight portions；
F) the polymethylphenyl siloxane fluid of 0.1-1.0 weight portions；And
G) the calcium-zinc composite stabilizing agent of 0.4-2.0 weight portions.
The 19. plasticised polyvinyl chloride materials according to any one of claim 1-10, comprising following component：
A) the polyvinyl chloride resin of 100 weight portions；
B) the plasticizer of 30-70 weight portions；
C) the ethylene-vinyl acetate of 5-15 weight portions-carbonyl copolymer；
D) the epoxy soybean oil of 1-5 weight portions；
E) the phosphorous acid three (nonyl phenyl ester) of 0.1-0.5 weight portions；
F) the polymethylphenyl siloxane fluid of 0.1-0.5 weight portions；And
G) the calcium-zinc composite stabilizing agent of 0.7-1.5 weight portions.
A kind of 20. methods of the plasticised polyvinyl chloride material prepared as any one of claim 1-19, including：
1) mix homogeneously in high-speed mixer by polyvinyl chloride resin and other components in addition to component C；And
2) by step 1) in obtain mixture be transferred on double roll mill, add component C kneaded, obtain plasticising polychlorostyrene
Vinyl material.
21. methods according to claim 20, wherein step 1) in be blended at a temperature of 85-95 DEG C and carry out 15-
20min；And/or step 2) in mixing 15-20min is carried out at 155-165 DEG C.
The 22. plasticised polyvinyl chloride materials according to any one of claim 1-19 are in packaging for foodstuff and medical apparatus and instruments
Purposes.
23. purposes according to claim 22 are the plasticised polyvinyl chloride material in food pack and film, transfusion
Purposes in pipe, transfusion bag, blood transfusion tube, transfusion bags.
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