CN105713333A - Food-grade TPE material and preparation technology thereof - Google Patents
Food-grade TPE material and preparation technology thereof Download PDFInfo
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- CN105713333A CN105713333A CN201610177016.9A CN201610177016A CN105713333A CN 105713333 A CN105713333 A CN 105713333A CN 201610177016 A CN201610177016 A CN 201610177016A CN 105713333 A CN105713333 A CN 105713333A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention discloses a food-grade TPE material and a preparation technology thereof. A food-grade material product prepared from a TPE material can replace a PVC material and has food-grade safety reliability, good mechanical properties and processing performance. The food-grade TPE material is prepared from, by weight, 60-80 parts of styrene elastomer, 20-40 parts of polypropylene resin, 30-50 parts of white oil, 5-20 parts of a polyquaternium-chitosan-hyperbranched polyurethane compound, 5-15 parts of sulfonated polybenzimidazole, 2-10 parts of 2,2'-bis(4-carboxyl phenoxy) benzidine, 0.5-1 part of a smoothing agent and 0.1-1 part of antioxidant. Chitosan is modified with polyquaternium, and then hyperbranched polyurethane is modified with the modified chitosan to obtain the polyquaternium-chitosan-hyperbranched polyurethane compound.
Description
Technical field
The invention belongs to TPE material field, specifically, the present invention relates to a kind of food stage TPE material.
Background technology
The packaging of some current food service industrys is also in practical PVC material, or some little parts use PVC
Material；Infringement is there is in PVC (polrvinyl chloride) material and additive DE HP thereof to health and environment.
1987, vinyl chloride was defined as human carcinogen by IARC.Either in polychlorostyrene second
During olefine resin synthesis, still add man-hour, always more or less produce vinyl chloride.Research finds: Long Term Contact
Vinyl Chloride Monomer can cause the symptoms such as neurasthenia, chloracne and Raynand's disease, is referred to as vinyl chloride disease.
Research shows: plasticised vinyl chloride resin DEHP organ multiple to humans and animals has generation toxic and side effects,
More worrying, DEHP hydrolysis can generate phthalic acid list ethyl hexyl ester (MEHP), and its poison is secondary
Effect is significantly larger than DEHP.
Calendar year 2001, the polrvinyl chloride of DEHP plasticising is classified as the thing of carcinogenesis by IARC
Matter；Using TPE material to substitute PVC material to make relevant food packaging is a kind of trend, but for
The parts that some hardness shape needs are higher, the mechanical performance of existing TPE material and processing characteristics need to carry
Height, the security performance as food grade materials is also required to promote, and increases market popularization degree with this.
Summary of the invention
The technical problem to be solved is for above-mentioned deficiency of the prior art, it is provided that a kind of food
Grade TPE material and preparation technology thereof, use the product of food grade materials prepared by this TPE material to replace
For PVC material, there is grade-safe reliability and there is good mechanical performance and processing characteristics.
In order to achieve the above object, food stage TPE material disclosed by the invention gives by the following technical solutions
Realize:
Food stage TPE material, it is characterised in that comprise the raw material of following weight proportioning:
Described polyquaternary ammonium salt-chitosan-super branched polyurethane complex is by first gathering with polyquaternary ammonium salt modification shell
Sugar, then with the modification of chitosan obtained, super branched polyurethane is modified process and obtains.
Further: described antioxidant is that antioxidant 1010 and irgasfos 168 form by equal proportion is compounding.
Further: described acrylic resin is atactic copolymerized polypropene, melt flow rate (MFR) be 5～
15g/min；Described slipping agent is nanometer grade silica powder or tetramethylolmethane stearate；Described random common
Poly-polyacrylic melt flow rate (MFR) is 8g/min；The particle diameter of described nanometer grade silica powder be 15～
20nm, specific surface area is 300～400m2/g.
Moreover: described styrenic elastomer is styrene-isoprene/butadiene-styrene hydrogen
Change copolymer and the mixture of styrene butadiene styrene block copolymer (SBS)；Described styrene-isoprene
/ butadiene-styrene hydrogenated copolymer is 3 with the mass ratio of styrene butadiene styrene block copolymer (SBS):
0.5～2；Described styrene-isoprene/butadiene-styrene hydrogenated copolymer selected from hardness be 65～80A,
Molecular weight is less than the one or several in the styrene-isoprene/butadiene-styrene hydrogenated copolymer of 120,000
The mixture planted；Described styrene butadiene styrene block copolymer (SBS) is less than the benzene of 200,000 selected from molecular weight
The mixture of one or more in ethylene-butadiene-styrene block copolymer.
Moreover: in described polyquaternary ammonium salt-chitosan-super branched polyurethane complex, described poly-season
Ammonium salt is by dibenzyl bromide and 1,4-lupetazin 1:(0.8 in molar ratio～0.99) prepare；
Described sulfonate polybenzimidazole is by sulfonation diacid, non-sulfonated diacid and tetramine (0.1～0.2) in molar ratio:
(0.8～0.9): 1 prepares.
Moreover: described sulfonation diacid selected from 2-sulfonic acid p-phthalic acid, 4-sulfonic acid M-phthalic acid,
4,6-disulfonic acid base M-phthalic acid, 2-sulfonic acid isophthalic two hydrobromic acid, 4-sulfonic acid isophthalic two hydrobromic acid, 4,6-
Disulfonic acid base isophthalic two hydrobromic acid, 2-sulfonic group adipic acid, 3-sulfonic group adipic acid, 2-sulfonic group suberic acid
And any one or more in 3-sulfonic group suberic acid.
Moreover: described sulfonation diacid selected from isophthalic acid, terephthalic acids, 4,4 '-biphenyl diformazan
Acid, Isosorbide-5-Nitrae-naphthalenedicarboxylic acid, diphenic acid (2,2 '-diphenyl dicarboxylic acid), phenyl indane dicarboxylic acid, 1,6-
Naphthalenedicarboxylic acid, NDA, 4,4 '-diphenyl ether dioctyl phthalate and 4,4 '-diphenylsulfide two
Any one or more in formic acid；Described tetramine is selected from DAB, 3,3', 4,4'-tetra-
Amino-diphenylethers, 3,3', 4,4'-bis-amido diphenyl sulphone (DPS), 3,3', 4,4'-bis-aminobenzophenone,
3,3', 4,4'-bis-amido hexichol first, 3,3', 4,4'-bis-amido diphenyl sulfide, 1,2,4,5-tetra-amido benzene
Or any one or more in 1,2,5,6-tetra-amido naphthalene.
The invention also discloses the preparation technology of above-mentioned food stage TPE material, it comprises the steps of:
(1) dispensing；Recipe configuration raw material according to above-mentioned food stage TPE material；Use that low speed is horizontal stirs
Mix a barrel stirring at low speed mix homogeneously；
(2) extrusion；The compound that step (1) obtains is sequentially sent to double screw extruder and single screw rod squeezes
Go out machine, extrusion molding；
(3) pelletizing；The material of step (2) extrusion molding is sent into pelleter pelletizing；
(4) cooling；Material after step (3) pelletizing being completed cools down；
(5) dehydration；Centrifugal dehydrator dehydration sent into by material after step (4) being cooled down；
(6) packaging；Material after step (5) being dehydrated is packed, and obtains final products.
Further: between described step (5) and step (6), also comprise dry step and screening
Step；Described dry step is: be dried in the dry agitator with temperature incubation function；Described screening
Step is: filter out satisfactory product on the vibrating.
Further: in described step (2), the rotating speed of dual-screw-stem machine is 30～50 revs/min, feeding section
Temperature is 160 DEG C～170 DEG C, and compression section temperature is 170 DEG C～180 DEG C, metering section temperature be 180 DEG C～
190 DEG C, machine neck temperature is 190 DEG C～200 DEG C, die temperature 190 DEG C～200 DEG C；Single screw extrusion machine mould
Head Section temperature is 160～230 DEG C, and the temperature in screw rod district is 160～230 DEG C.
The medicine have the advantages that
Food stage TPE material disclosed by the invention, its formula comprises: styrenic elastomer；Polypropylene tree
Fat；White oil；Polyquaternary ammonium salt-chitosan-super branched polyurethane complex；Sulfonate polybenzimidazole；2,2'-
Double (4-carboxyphenoxy) benzidine；Slipping agent；Antioxidant；These primary raw materials make whole material
Possess excellent physical and mechanical properties and processing characteristics, it is possible to substitute the existing PVC for preparing medical catheter
Material, it is to avoid PVC material brings harm；Inventive formulation makes also by slipping agent, antioxidant
Obtain stable performance, excellent.
Polyquaternary ammonium salt-chitosan-super branched polyurethane the complex of the present invention is by first with polyquaternary ammonium salt modification shell
Polysaccharide, then with the modification of chitosan obtained, super branched polyurethane is modified process and obtains.Polyquaternary ammonium salt-shell
On the one hand adding of polysaccharide-super branched polyurethane complex can be played good by a large amount of concentrations of polyquaternary ammonium salt
Good antibacterial effect, on the other hand, also can play certain friendship on the premise of not affecting processing characteristics
Connection effect, improves intensity.
Preparation method disclosed by the invention, can not only obtain the food stage TPE material possessing above-mentioned premium properties
Material, the twin screw also by preparation method itself is combined complementary expressing technique, by double spiral shells with single screw rod advantage
Bar forced conveyance, efficiently plasticizing mixing with shear dispersion, without the backflow of head back pressure, it is to avoid high shear is overheated；
Single screw rod high pressure extrusion, but low speed low sheraing, avoided overheated contradiction equally, used and make dispensing when
By the agitator dispensing of low speed, phase higher speed bucket stirs evenly, is not likely to produce frictional heat, meanwhile, and raw material
The particle temperature produced after pelleter is higher, reduces temperature through cooling system, through the material of water cooling
Though grain dehydration function by centrifugation filters major part moisture content, but also residual can there be a small amount of moisture content on material grain surface, then passes through
Agitator with temperature incubation function dries product, thus can make more to become with the every physical property of a batch of product
Unanimously.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not limit
Qualitatively, it is impossible to limit protection scope of the present invention with following embodiment.
Embodiment 1:
Food stage TPE material, it is characterised in that comprise the raw material of following weight proportioning:
Described polyquaternary ammonium salt-chitosan-super branched polyurethane complex is by first gathering with polyquaternary ammonium salt modification shell
Sugar, then with the modification of chitosan obtained, super branched polyurethane is modified process and obtains.
Its preparation method is:
(1) dispensing；Recipe configuration raw material according to above-mentioned food stage TPE material；Use low speed Horizontal stirring
Bucket stirring at low speed mix homogeneously；(2) extrusion；The compound that step (1) obtains is sequentially sent to twin screw squeeze
Go out machine and single screw extrusion machine, extrusion molding；(3) pelletizing；The material of step (2) extrusion molding is sent into
Pelleter pelletizing；(4) cooling；Material after step (3) pelletizing being completed cools down；(5) dehydration；
Centrifugal dehydrator dehydration sent into by material after step (4) being cooled down；(6) packaging；Step (5) is dehydrated
After material pack, obtain final products.
In described step (2), the rotating speed of dual-screw-stem machine is 30 revs/min, and feeding section temperature is 160 DEG C, pressure
Contracting section temperature is 170 DEG C, and metering section temperature is 180 DEG C, and machine neck temperature is 190 DEG C, die temperature 190 DEG C；
Single screw extrusion machine die head district temperature is 160, and the temperature in screw rod district is 160 DEG C.
Embodiment 2:
Food stage TPE material, it is characterised in that comprise the raw material of following weight proportioning:
Described polyquaternary ammonium salt-chitosan-super branched polyurethane complex is by first gathering with polyquaternary ammonium salt modification shell
Sugar, then with the modification of chitosan obtained, super branched polyurethane is modified process and obtains.
Its preparation method is:
(1) dispensing；Recipe configuration raw material according to above-mentioned food stage TPE material；Use low speed Horizontal stirring
Bucket stirring at low speed mix homogeneously；(2) extrusion；The compound that step (1) obtains is sequentially sent to twin screw squeeze
Go out machine and single screw extrusion machine, extrusion molding；(3) pelletizing；The material of step (2) extrusion molding is sent into
Pelleter pelletizing；(4) cooling；Material after step (3) pelletizing being completed cools down；(5) dehydration；
Centrifugal dehydrator dehydration sent into by material after step (4) being cooled down；(6) packaging；Step (5) is dehydrated
After material pack, obtain final products.
In described step (2), the rotating speed of dual-screw-stem machine is 40 revs/min, and feeding section temperature is 165 DEG C, pressure
Contracting section temperature is 175 DEG C, and metering section temperature is 185 DEG C, and machine neck temperature is 195 DEG C, die temperature 195 DEG C；
Single screw extrusion machine die head district temperature is 200 DEG C, and the temperature in screw rod district is 200 DEG C.
Embodiment 3:
Food stage TPE material, it is characterised in that comprise the raw material of following weight proportioning:
Described polyquaternary ammonium salt-chitosan-super branched polyurethane complex is by first gathering with polyquaternary ammonium salt modification shell
Sugar, then with the modification of chitosan obtained, super branched polyurethane is modified process and obtains.
Its preparation method is:
(1) dispensing；Recipe configuration raw material according to above-mentioned food stage TPE material；Use low speed Horizontal stirring
Bucket stirring at low speed mix homogeneously；(2) extrusion；The compound that step (1) obtains is sequentially sent to twin screw squeeze
Go out machine and single screw extrusion machine, extrusion molding；(3) pelletizing；The material of step (2) extrusion molding is sent into
Pelleter pelletizing；(4) cooling；Material after step (3) pelletizing being completed cools down；(5) dehydration；
Centrifugal dehydrator dehydration sent into by material after step (4) being cooled down；(6) packaging；Step (5) is dehydrated
After material pack, obtain final products.
In described step (2), the rotating speed of dual-screw-stem machine is 50 revs/min, and feeding section temperature is 170 DEG C,
Compression section temperature is 180 DEG C, and metering section temperature is 190 DEG C, and machine neck temperature is 200 DEG C, die temperature
200℃；Single screw extrusion machine die head district temperature is 230 DEG C, and the temperature in screw rod district is 230 DEG C.
The specific performance index of above three embodiment is as follows:
The performance of above three embodiment is more or less the same, and could be used for the processing of food grade products.
In some preferred embodiments, described antioxidant is that antioxidant 1010 and irgasfos 168 are multiple by equal proportion
Join and form.
In some preferred embodiments, described acrylic resin is atactic copolymerized polypropene, melt flow rate (MFR)
It is 5～15g/min；Described slipping agent is nanometer grade silica powder or tetramethylolmethane stearate；Described
The melt flow rate (MFR) of atactic copolymerized polypropene is 8g/min；The particle diameter of described nanometer grade silica powder is
15～20nm, specific surface area is 300～400m2/g.
In some preferred embodiments, described styrenic elastomer is styrene-isoprene/butadiene-benzene
Ethylene hydrogenation copolymer and the mixture of styrene butadiene styrene block copolymer (SBS)；Described styrene-different
Pentadiene/butadiene-styrene hydrogenated copolymer and the quality of styrene butadiene styrene block copolymer (SBS)
Ratio is 3:0.5～2；Described styrene-isoprene/butadiene-styrene hydrogenated copolymer selected from hardness is
65～80A, molecular weight is less than in the styrene-isoprene/butadiene-styrene hydrogenated copolymer of 120,000
The mixture of one or more；Described styrene butadiene styrene block copolymer (SBS) is less than selected from molecular weight
The mixture of one or more in the styrene butadiene styrene block copolymer (SBS) of 200000.
In some preferred embodiments, in described polyquaternary ammonium salt-chitosan-super branched polyurethane complex, institute
State polyquaternary ammonium salt by dibenzyl bromide and 1,4-lupetazin 1:(0.8 in molar ratio～0.99) prepare
Obtain；Described sulfonate polybenzimidazole by sulfonation diacid, non-sulfonated diacid and tetramine in molar ratio (0.1～
0.2): (0.8～0.9): 1 prepares.
In some preferred embodiments, described sulfonation diacid is selected from 2-sulfonic acid p-phthalic acid, 4-sulfonic acid isophthalic
Dioctyl phthalate, 4,6-disulfonic acid base M-phthalic acid, 2-sulfonic acid isophthalic two hydrobromic acid, 4-sulfonic acid isophthalic dihydro bromine
Acid, 4,6-disulfonic acid base isophthalic two hydrobromic acid, 2-sulfonic group adipic acid, 3-sulfonic group adipic acid, 2-sulfonic acid
Any one or more in base suberic acid and 3-sulfonic group suberic acid.
In some preferred embodiments, described sulfonation diacid is selected from isophthalic acid, terephthalic acids, 4,4 '-connection
Phthalic acid, Isosorbide-5-Nitrae-naphthalenedicarboxylic acid, diphenic acid (2,2 '-diphenyl dicarboxylic acid), phenyl indane dicarboxylic acid,
1,6-naphthalenedicarboxylic acid, NDA, 4,4 '-diphenyl ether dioctyl phthalate and 4,4 '-diphenyl
Any one or more in thioether dioctyl phthalate；Described tetramine selected from DAB,
3,3', 4,4'-tetramino diphenyl ether, 3,3', 4,4'-bis-amido diphenyl sulphone (DPS), 3,3', 4,4'-bis-amido two
Benzophenone, 3,3', 4,4'-bis-amido hexichol first, 3,3', 4,4'-bis-amido diphenyl sulfide, 1,2,4,5-tetra-
Any one or more in amido benzene or 1,2,5,6-tetra-amido naphthalene.
Above the preferred embodiment for the present invention is explained in detail, but the invention is not restricted to above-mentioned embodiment party
Formula, in the ken that those of ordinary skill in the art are possessed, it is also possible to without departing from present inventive concept
On the premise of make a variety of changes, these changes relate to correlation technique well-known to those skilled in the art, this
Both fall within the protection domain of patent of the present invention a bit.
Many other can be made without departing from the spirit and scope of the present invention to change and remodeling.Should be appreciated that this
Invention is not limited to specific embodiment, and the scope of the present invention is defined by the following claims.
Claims (10)
1. food stage TPE material, it is characterised in that comprise the raw material of following weight proportioning:
Described polyquaternary ammonium salt-chitosan-super branched polyurethane complex is by first using polyquaternary ammonium salt modification of chitosan, then with the modification of chitosan obtained, super branched polyurethane is modified process and obtains.
2. food stage TPE material as claimed in claim 1, it is characterised in that described antioxidant is antioxidant 1010 and irgasfos 168 forms by equal proportion is compounding.
3. food stage TPE material as claimed in claim 1, it is characterised in that described acrylic resin is atactic copolymerized polypropene, and melt flow rate (MFR) is 5～15g/min；Described slipping agent is nanometer grade silica powder or tetramethylolmethane stearate；The melt flow rate (MFR) of described atactic copolymerized polypropene is 8g/min；The particle diameter of described nanometer grade silica powder is 15～20nm, and specific surface area is 300～400m2/g.
4. the food stage TPE material as described in claims 1 to 3 is arbitrary, it is characterised in that: described styrenic elastomer is styrene-isoprene/butadiene-styrene hydrogenated copolymer and the mixture of styrene butadiene styrene block copolymer (SBS)；Described styrene-isoprene/butadiene-styrene hydrogenated copolymer is 3:0.5～2 with the mass ratio of styrene butadiene styrene block copolymer (SBS)；Described styrene-isoprene/butadiene-styrene hydrogenated copolymer selected from hardness be 65～80A, molecular weight less than 120,000 styrene-isoprene/butadiene-styrene hydrogenated copolymer in the mixture of one or more；Described styrene butadiene styrene block copolymer (SBS) is less than the mixture of one or more in the styrene butadiene styrene block copolymer (SBS) of 200,000 selected from molecular weight.
5. the food stage TPE material as described in claims 1 to 3 is arbitrary, it is characterized in that: in described polyquaternary ammonium salt-chitosan-super branched polyurethane complex, described polyquaternary ammonium salt is by dibenzyl bromide and Isosorbide-5-Nitrae-lupetazin 1:(0.8 in molar ratio～0.99) prepare；Described sulfonate polybenzimidazole is by sulfonation diacid, non-sulfonated diacid and tetramine (0.1～0.2) in molar ratio: (0.8～0.9): 1 prepares.
6. the described food stage TPE material of claim 5, it is characterized in that: described sulfonation diacid selected from 2-sulfonic acid p-phthalic acid, 4-sulfonic acid M-phthalic acid, 4,6-disulfonic acid base M-phthalic acid, 2-sulfonic acid isophthalic two hydrobromic acid, 4-sulfonic acid isophthalic two hydrobromic acid, 4, any one or more in 6-disulfonic acid base isophthalic two hydrobromic acid, 2-sulfonic group adipic acid, 3-sulfonic group adipic acid, 2-sulfonic group suberic acid and 3-sulfonic group suberic acid.
7. food stage TPE material as claimed in claim 5, it is characterized in that, described sulfonation diacid selected from isophthalic acid, terephthalic acids, 4,4 '-biphenyl dicarboxylic acid, 1,4-naphthalenedicarboxylic acid, diphenic acid (2,2 '-diphenyl dicarboxylic acid), phenyl indane dicarboxylic acid, 1,6-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 4,4 '-diphenyl ether dioctyl phthalate and 4, any one or more in 4 '-diphenylsulfide dioctyl phthalate；Described tetramine be selected from DAB, 3,3', 4,4'-tetramino diphenyl ether, 3,3', 4,4'-bis-amido diphenyl sulphone (DPS), 3,3', 4,4'-bis-aminobenzophenone, 3,3', 4,4'-bis-amido hexichol first, 3,3', 4,4'-bis-amido diphenyl sulfide, 1,2,4,5-tetra-amido benzene or 1, any one or more in 2,5,6-tetra-amido naphthalene.
8. the preparation technology of food stage TPE material, it is characterised in that comprise the steps of:
(1) dispensing；Recipe configuration raw material according to the food stage TPE material as described in as arbitrary in claim 1～7；Use low speed Horizontal stirring bucket stirring at low speed mix homogeneously；
(2) extrusion；The compound that step (1) obtains is sequentially sent to double screw extruder and single screw extrusion machine, extrusion molding；
(3) pelletizing；The material of step (2) extrusion molding is sent into pelleter pelletizing；
(4) cooling；Material after step (3) pelletizing being completed cools down；
(5) dehydration；Centrifugal dehydrator dehydration sent into by material after step (4) being cooled down；
(6) packaging；Material after step (5) being dehydrated is packed, and obtains final products.
9. the preparation method of medical infusion lines TPE material as claimed in claim 8, it is characterised in that also comprise the step of dry step and screening between described step (5) and step (6)；Described dry step is: be dried in the dry agitator with temperature incubation function；The step of described screening is: filter out satisfactory product on the vibrating.
10. the preparation method of medical infusion lines TPE material as claimed in claim 9, it is characterized in that, in described step (2), the rotating speed of dual-screw-stem machine is 30～50 revs/min, feeding section temperature is 160 DEG C～170 DEG C, and compression section temperature is 170 DEG C～180 DEG C, and metering section temperature is 180 DEG C～190 DEG C, machine neck temperature is 190 DEG C～200 DEG C, die temperature 190 DEG C～200 DEG C；Single screw extrusion machine die head district temperature is 160～230 DEG C, and the temperature in screw rod district is 160～230 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610177016.9A CN105713333A (en) | 2016-03-24 | 2016-03-24 | Food-grade TPE material and preparation technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610177016.9A CN105713333A (en) | 2016-03-24 | 2016-03-24 | Food-grade TPE material and preparation technology thereof |
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| CN105713333A true CN105713333A (en) | 2016-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353553A (en) * | 2017-08-01 | 2017-11-17 | 余姚优信塑业有限公司 | TPE and its preparation technology are used in a kind of food contact |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353553A (en) * | 2017-08-01 | 2017-11-17 | 余姚优信塑业有限公司 | TPE and its preparation technology are used in a kind of food contact |
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Application publication date: 20160629 |