CN113089373B - Medical high-strength dialysis paper and preparation method thereof - Google Patents
Medical high-strength dialysis paper and preparation method thereof Download PDFInfo
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- CN113089373B CN113089373B CN202110171265.8A CN202110171265A CN113089373B CN 113089373 B CN113089373 B CN 113089373B CN 202110171265 A CN202110171265 A CN 202110171265A CN 113089373 B CN113089373 B CN 113089373B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/02—Material of vegetable origin
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/35—Polyalkenes, e.g. polystyrene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/28—Colorants ; Pigments or opacifying agents
Abstract
The invention discloses medical high-strength dialyzing paper and a preparation method thereof; the preparation method comprises the following steps: pulping the plant fiber, adding the chemical fiber, the green tangerine peel extract and the 3- (cyclohexylamino) ethyl propionate, and mixing to prepare fiber slurry; adding polyvinylpyrrolidone, starch in the pulp, a wet strength agent and an inorganic pigment into the fiber pulp to obtain a mixture; making the mixture into a dialysis paper semi-finished product by a fourdrinier or inclined wire paper machine; and coating the sizing solution on the surface of the semi-finished product of the dialyzing paper, and drying and coiling to obtain the medical dialyzing paper. The medical dialyzing paper prepared by the invention has higher tensile strength, wet tensile strength, tearing strength, bursting strength, higher peel strength, and better tightness, air permeability and water resistance.
Description
Technical Field
The invention belongs to the field of medical instrument treatment packaging materials, and particularly relates to medical high-strength dialysis paper and a preparation method thereof.
Background
The dialysis paper is mostly used for packaging medical instruments, and usually, dialysis base paper is obtained and then coated, and then the paper-plastic bag is made of the dialysis base paper and a plastic film. The dialysis paper has certain strength requirement as medical packaging paper, and has better bacterium-resisting effect, the traditional dialysis paper is processed by a fourdrinier paper machine and a rotary screen paper machine in the production process, and detection shows that the dialysis paper manufactured by the fourdrinier paper machine and the rotary screen paper machine is not strong enough and not good enough in quality, so that the existing production process and production equipment of the dialysis paper are required to be improved.
In recent years, with the continuous development and progress of the medical industry and the increasing emphasis on health and hygiene of people, the quality requirement of the market on the dialyzing paper is higher and higher, and the requirements of various aspects such as physical indexes, performance and the like of the dialyzing paper are higher than those of the common medical packaging base paper, such as strength, pore diameter, air permeability, elasticity and the like; meanwhile, the requirements on bacteria resistance, heat sealability, air permeability, stripping effect and the like are higher.
Prior art for example application publication No. CN 104099805 a discloses a medical dialysis paper; the paper base layer contains broad leaf wood and softwood raw materials, and the coating layer contains ethylene-vinyl acetate copolymer, polyacrylamide, barium stearate, hydrogenated rosin, glycidyl versatate, tert-butyl hydroquinone, erucyl amide and o-phenyl benzoate; the prepared paper substrate has better air permeability. Application publication No. CN 109853297A discloses medical dialysis base paper and a production method thereof; the method comprises the steps of adopting a bleached chemical softwood pulp board and a bleached chemical hardwood pulp board as raw materials; respectively crushing and pulping bleached chemical softwood pulp boards and bleached chemical hardwood pulp boards for later use; mixing the pulp in a pulp blending tank according to a proportion, adding a sizing agent and a wet strength agent, stirring, and then feeding the pulp to a papermaking forebay for later use; the pulp is made into qualified finished products through procedures of size mixing box, fan pump, conical slag remover, pressure screen wire-feeding part for papermaking and forming, squeezing part for dewatering, front drying part drying, surface sizing, back drying part drying, soft calender finishing, paper winder, rewinder and the like.
Disclosure of Invention
The invention aims to provide medical high-strength dialysis paper which has higher tensile strength, wet tensile strength, tearing strength, bursting strength, higher peeling strength, better tightness, air permeability, water resistance and other comprehensive properties.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a mixture for dialysis paper, comprising a fiber slurry;
the fiber slurry is prepared from plant fiber, chemical fiber, green tangerine peel extract and ethyl 3- (cyclohexylamino) propionate.
The medical dialyzing paper is prepared by compounding plant fibers, chemical fibers, a green tangerine peel extract, 3- (cyclohexylamino) ethyl propionate, in-pulp starch CS, a wet strength agent and an inorganic pigment to prepare a mixture for dialyzing paper, so that the medical dialyzing paper has high tensile strength, wet tensile strength, tearing strength, bursting strength, peeling strength, air permeability and tightness. The reason may be that the green tangerine peel extract and the ethyl 3- (cyclohexylamino) propionate are subjected to physical and chemical reactions with active groups in plant fibers and chemical fibers to enhance the bonding force among the fibers to a certain extent, and then have a certain synergistic effect with other components, so that the obtained mixture for the dialyzing paper has excellent stability, and the medical dialyzing paper is prepared from the mixture, thereby improving the tensile strength, wet tensile strength and tearing resistance of the dialyzing paper, having higher peel strength, and avoiding the phenomena of paper sticking, paper scrap and paper sheet layering to obtain a product with stable quality; meanwhile, the prepared medical dialyzing paper has higher tightness and air permeability, so that the dialyzing paper has good air permeability and can be widely applied to the medical field.
Preferably, the content of limonin in the green orange peel extract is 25.3-31.8 mg/g.
Preferably, the mixture for the dialyzing paper further comprises starch CS in the pulp, a wet strength agent and an inorganic pigment.
Preferably, in the fiber slurry, by weight, 25-65 parts of plant fibers, 5-10 parts of chemical fibers, 2.5-7.5 parts of green orange peel extract and 1-4 parts of ethyl 3- (cyclohexylamino) propionate are included.
Preferably, in the mixture for the dialyzing paper, 2-6 parts by weight of polyvinylpyrrolidone, 0.5-1.5 parts by weight of in-pulp starch CS, 0.1-0.5 part by weight of wet strength agent and 1.5-2.5 parts by weight of inorganic pigment are added.
Preferably, the plant fibers include softwood pulp fibers, hardwood pulp fibers, and straw pulp fibers.
Preferably, the vegetable fibers comprise 55-75 parts by weight of softwood pulp fibers, 8-12 parts by weight of hardwood pulp fibers and 3-10 parts by weight of straw pulp fibers.
Preferably, the chemical fiber is one or a mixture of polyester fiber, polylactic acid fiber or polyamide fiber.
More preferably, the inorganic pigment is one or a mixture of talcum powder, calcium carbonate or titanium dioxide.
The invention also discloses medical high-strength dialyzing paper which is prepared from the mixture for dialyzing paper.
The invention also discloses a preparation method of the medical high-strength dialyzing paper.
A preparation method of medical high-strength dialysis paper comprises the following steps:
s1: pulping the plant fiber, adding the chemical fiber, the green tangerine peel extract and the 3- (cyclohexylamino) ethyl propionate, and mixing to prepare fiber slurry;
s2: adding polyvinylpyrrolidone, in-pulp starch CS, a wet strength agent and an inorganic pigment into the fiber slurry to obtain a mixture;
s3: making the mixture into a dialysis paper semi-finished product by a fourdrinier or inclined wire paper machine;
s4: and coating the sizing solution on the surface of the semi-finished product of the dialyzing paper, and drying and coiling to obtain the medical dialyzing paper.
Preferably, the beating degree of the plant fibers is 15-250SR。
Preferably, in step S3, the sizing solution is composed of sodium alginate, PVA, a surface sizing agent and water.
More preferably, the PVA accounts for 2-7 parts, the surface sizing agent accounts for 1-5 parts, and the water accounts for 60-80 parts by weight.
More preferably, the surface sizing agent comprises sodium alginate and AKD.
More preferably, in the surface sizing agent, the sodium alginate is 3-8 parts by weight, and the AKD is 2-5 parts by weight.
More preferably, the surface sizing agent is 0.15-0.25% of the medical dialyzing paper after being dried completely.
The invention also discloses application of the green tangerine peel extract in improving the strength of the medical dialyzing paper.
The medical dialyzing paper is prepared by compounding the plant fiber, the chemical fiber, the green tangerine peel extract, the 3- (cyclohexylamino) ethyl propionate, the starch CS in pulp, the wet strength agent and the inorganic pigment to prepare the mixture for the dialyzing paper, so that the medical dialyzing paper has the following beneficial effects: the medical dialyzing paper has high tensile strength, wet tensile strength, tearing strength, bursting strength, peeling strength, air permeability and tightness. The reason may be that the green orange peel extract and the ethyl 3- (cyclohexylamino) propionate have physical and chemical reactions with active groups in plant fibers and chemical fibers, so that the bonding force among the fibers is enhanced to a certain extent, and then the green orange peel extract and the ethyl 3- (cyclohexylamino) propionate have a certain synergistic effect with other components, so that the obtained mixture for the dialyzing paper has excellent stability, and the medical dialyzing paper prepared from the mixture for the dialyzing paper has improved tensile strength, wet tensile strength and tearing resistance, higher peeling strength and avoids the phenomena of sticky paper scraps and paper sheet layering, so that a product with stable quality is obtained; meanwhile, the prepared medical dialyzing paper has higher tightness and air permeability, so that the dialyzing paper has good air permeability and can be widely applied to the medical field. Therefore, the medical high-strength dialysis paper has high tensile strength, wet tensile strength, tearing strength, bursting strength, peeling strength, and comprehensive performances of high tightness, air permeability, water resistance and the like.
Detailed Description
In some specific embodiments, in order to further improve the tensile strength and peel strength of the medical dialyzing paper and make it have excellent water resistance, the preferred measures further include:
0.25-0.5 part by weight of cimicifuga foetida epoxy alcohol glycoside is added into the glue application liquid, so that the strength and the peeling force of the medical dialyzing paper are further improved, and the medical dialyzing paper has excellent water resistance; probably because of the addition of the cimicifuga foetida epoxy alcohol glycoside, the cimicifuga foetida epoxy alcohol glycoside is subjected to certain physicochemical crosslinking with PVA, sodium alginate and AKD in the sizing solution to form a novel sizing solution, and then the novel sizing solution is coated on the surface of semi-finished dialysis paper, and the novel sizing solution is possibly subjected to certain physicochemical reaction with groups on the surface of the dialysis paper, so that the tensile strength and the peel strength of the dialysis paper are enhanced, and meanwhile, the formed chemical bond or physical bond reduces the water absorption of the dialysis paper, so that the dialysis paper has excellent water resistance, and the medical dialysis paper with good comprehensive performance is obtained.
The technical solution of the present invention is further described in detail with reference to the following embodiments:
example 1
A preparation method of medical high-strength dialysis paper comprises the following steps:
s1: pulping 45 parts by weight of plant fiber according to the parts by weight, wherein the pulping degree is 180SR, wherein the plant fiber comprises 60 parts by weight of softwood pulp fiber, 10 parts by weight of hardwood pulp fiber and 8 parts by weight of straw pulp fiber, then 5 parts by weight of polylactic acid fiber, 3.5 parts by weight of green tangerine peel extract (the limonin content is 28.4mg/g) and 2 parts by weight of ethyl 3- (cyclohexylamino) propionate are added, and the mixture is stirred and mixed uniformly to prepare fiber slurry;
s2: adding 3 parts by weight of polyvinylpyrrolidone, 0.9 part by weight of in-pulp starch CS, 0.3 part by weight of wet strength agent and 2.1 parts by weight of talcum powder into the fiber slurry, and stirring and mixing uniformly to obtain a mixture;
s3: making the mixture into a dialysis paper semi-finished product by a fourdrinier or inclined wire paper machine;
s4: coating sizing liquid on the surface of the semi-finished dialyzing paper, wherein the sizing liquid comprises the following components: 4 parts of PVA, 2 parts of surface sizing agent and 70 parts of water, wherein the surface sizing agent comprises 5 parts of sodium alginate and 3.5 parts of AKD, and then the medical dialyzing paper is obtained by drying and reeling.
Example 2
A preparation method of medical high-strength dialysis paper comprises the following steps:
s1: 60 parts by weight of plant fiber is beaten, and the beating degree is 220SR, wherein the plant fiber comprises 75 parts by weight of softwood pulp fiber, 12 parts by weight of hardwood pulp fiber and 5 parts by weight of straw pulp fiber, then 5 parts by weight of polyamide fiber, 6 parts by weight of green orange peel extract (the limonin content is 28.4mg/g) and 4 parts by weight of ethyl 3- (cyclohexylamino) propionate are added, and the mixture is stirred and mixed uniformly to prepare fiber slurry;
s2: adding 6 parts by weight of polyvinylpyrrolidone, 1.5 parts by weight of in-pulp starch CS, 0.5 part by weight of wet strength agent and 1.5 parts by weight of calcium carbonate into the fiber slurry, and stirring and mixing uniformly to obtain a mixture;
s3: making the mixture into a dialysis paper semi-finished product by a fourdrinier or inclined wire paper machine;
s4: coating sizing liquid on the surface of the semi-finished dialyzing paper, wherein the sizing liquid comprises the following components: 6 parts of PVA, 3.5 parts of surface sizing agent and 80 parts of water, wherein the surface sizing agent comprises 7 parts of sodium alginate and 2 parts of AKD, and then the medical dialyzing paper is obtained by drying and coiling.
Example 3
A preparation method of medical high-strength dialysis paper comprises the following steps:
s1: beating 50 weight portions of plant fiber with beating degree of 220SR, wherein the plant fiber comprises 55 parts by weight of softwood pulp fiber, 8 parts by weight of hardwood pulp fiber and 10 parts by weight of straw pulp fiber, then 10 parts by weight of polyamide fiber, 2.5 parts by weight of green orange peel extract (the limonin content is 28.4mg/g) and 1.5 parts by weight of ethyl 3- (cyclohexylamino) propionate are added, and the mixture is stirred and mixed uniformly to prepare fiber slurry;
the other steps were the same as in example 1.
Example 4
The preparation method of the medical high-strength dialyzing paper is the same as that of the embodiment 1 in other steps, and is different from the embodiment 1 in that:
s2: adding 6 parts by weight of polyvinylpyrrolidone, 1.5 parts by weight of in-pulp starch CS, 0.5 part by weight of wet strength agent and 2.5 parts by weight of titanium dioxide into the fiber slurry, and stirring and mixing uniformly to obtain a mixture.
Example 5
The preparation method of the medical high-strength dialyzing paper is the same as that of the embodiment 1 except that the following steps are adopted:
s4: coating sizing liquid on the surface of the semi-finished dialyzing paper, wherein the sizing liquid comprises the following components: 4 parts of PVA, 2 parts of surface sizing agent, 0.35 part of cimicifuga foetida epoxy alcohol glycoside and 70 parts of water by weight, wherein the surface sizing agent comprises 5 parts of sodium alginate and 3.5 parts of AKD by weight, and then drying and reeling are carried out to obtain the medical dialyzing paper.
Example 6
The preparation method of the medical high-strength dialyzing paper is the same as that of the embodiment 5 except that the preparation method comprises the following steps of: in step S4, cimicifugae foetidae epoxy alcohol glycoside is added in an amount of 0.5 parts by weight.
Comparative example 1
The preparation method of the medical high-strength dialyzing paper is the same as that of the embodiment 1 in other steps, and is different from the embodiment 1 in that: in step S1, no green orange peel extract is added.
Comparative example 2
The preparation method of the medical high-strength dialyzing paper is the same as that of the embodiment 1 in other steps, and is different from the embodiment 1 in that: in step S1, ethyl 3- (cyclohexylamino) propionate was not added.
Comparative example 3
The preparation method of the medical high-strength dialyzing paper is the same as that of the embodiment 1 in other steps, and is different from the embodiment 1 in that: in step S1, the green tangerine peel extract and ethyl 3- (cyclohexylamino) propionate were not added.
Test example 1
1. Determination of various properties of medical dialyzing paper
The test tests various performances of the medical dialyzing paper according to the national standard; the indexes are shown in table 1.
The test results of the examples are shown in tables 2 and 3.
As can be seen from Table 2, the longitudinal tensile strength and the transverse tensile strength of examples 1 to 4 are respectively higher than 8.55KN/m and 4.6KN/m, the longitudinal wet tensile strength is not lower than 2.25KN/m, the transverse wet tensile strength is higher than 1.4KN/m, the longitudinal tearing strength is higher than 558mN, the transverse tearing strength is higher than 565mN, the bursting strength is not lower than 249Kpa, and the industrial standards are met; comparing example 1 with comparative examples 1-3, the tensile strength in the longitudinal and transverse directions, the wet tensile strength in the longitudinal and transverse directions, and the tear strength in the longitudinal and transverse directions of example 1 are all higher than those of comparative examples 1-3, which shows that the tensile strength, the wet tensile strength, and the burst strength of the medical dialyzing paper are improved by adding the green tangerine peel extract and the ethyl 3- (cyclohexylamino) propionate into the dialyzing paper at the same time, because the green tangerine peel extract and the ethyl 3- (cyclohexylamino) propionate are subjected to physicochemical reaction with active groups in plant fibers and chemical fibers, the bonding force among the fibers is enhanced to a certain extent, and then the green tangerine peel extract and the ethyl 3- (cyclohexylamino) propionate perform a certain synergistic action with other components, so that the obtained mixed material for the dialyzing paper has excellent stability, and the medical dialyzing paper prepared by the mixed material has the tensile strength, the wet tensile strength, and the burst strength of the dialyzing paper. Comparing example 1 with example 5, the longitudinal and transverse tensile strength and the longitudinal and transverse wet tensile strength of example 5 are higher than those of example 1, and the longitudinal and transverse tearing strength and the bursting strength of the dialysis paper 5 of the example are not obviously different from those of example 1, which shows that the addition of the cimicifuga foetida epoxy alcohol glycoside leads the cimicifuga foetida epoxy alcohol glycoside to generate certain physicochemical crosslinking with other components, so that the tensile strength and the wet tensile strength of the dialysis paper are enhanced, and the tearing strength and the bursting strength of the dialysis paper are not obviously influenced.
As can be seen from Table 3, examples 1 to 4 had an air permeability of not less than 11.9Um/pa · s and a firmness of more than 0.75g/cm3Front surface water absorption of less than 16.5g/m2The water absorption of the back surface is lower than 17.0g/m2The longitudinal peel strength is higher than 6.0N/15mm, and the transverse peel strength is higher than 5.2N/15mm, namely, the air permeability, the tightness, the water absorbability and the peel strength of the medical dialyzing paper prepared in the embodiments 1 to 4 all meet the industrial standard and can meet the requirements of customers; comparing example 1 with comparative examples 1 to 3, the air permeability, the tightness, the water absorption and the peeling strength of example 1 are all higher than those of comparative examples 1 to 3, which shows that the air permeability, the tightness and the peeling strength of the dialysis paper are improved by adding the green tangerine peel extract and the ethyl 3- (cyclohexylamino) propionate into the dialysis paper at the same time, andthe water absorption of the dialyzing paper is reduced, even if the dialyzing paper has better water resistance; compared with the embodiment 1 and the embodiment 5, the air permeability and the tightness of the embodiment 5 are not obviously different from those of the embodiment 1, and the front surface water absorption and the back surface water absorption and the longitudinal and transverse peeling strengths of the embodiment 5 are higher than those of the embodiment 1, which shows that the cimicifuga foetida epoxy alcohol glycoside added into the sizing solution has no obvious influence on the air permeability and the tightness of the dialyzing paper, further improves the peeling strength of the dialyzing paper, reduces the water absorption of the dialyzing paper and enables the dialyzing paper to have good water resistance.
Conventional operations in the operation steps of the present invention are well known to those skilled in the art and will not be described herein.
The above embodiments are merely illustrative, and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (10)
1. A mixture for dialysis paper, comprising a fiber slurry;
the fiber slurry is prepared from plant fibers, chemical fibers, a green orange peel extract and ethyl 3- (cyclohexylamino) propionate; the content of limonin in the green orange peel extract is 28.4 mg/g.
2. The composition for dialysis paper according to claim 1, wherein: the mixture for the dialyzing paper further comprises polyvinylpyrrolidone, in-pulp starch CS, a wet strength agent and an inorganic pigment.
3. The composition for dialysis paper according to claim 1, wherein: the fiber slurry comprises, by weight, 25-65 parts of plant fibers, 5-10 parts of chemical fibers, 2.5-7.5 parts of green orange peel extract and 1-4 parts of ethyl 3- (cyclohexylamino) propionate.
4. The composition for dialysis paper according to claim 2, wherein: in the mixture for the dialyzing paper, by weight, 1-3 parts of polyvinylpyrrolidone, 0.5-1.5 parts of in-pulp starch CS, 0.1-0.5 part of wet strength agent and 1.5-2.5 parts of inorganic pigment are added.
5. The composition for dialysis paper according to claim 1, wherein: the plant fiber includes softwood pulp fiber, hardwood pulp fiber and straw pulp fiber.
6. The composition for dialysis paper according to claim 4, wherein: the plant fiber comprises, by weight, 55-75 parts of softwood pulp fibers, 8-12 parts of hardwood pulp fibers and 3-10 parts of straw pulp fibers.
7. A medical high-strength dialysis paper prepared from the mixture for dialysis paper of claim 2.
8. The method for preparing medical high-strength dialysis paper as claimed in claim 7, comprising the steps of:
s1: pulping the plant fiber, adding the chemical fiber, the green tangerine peel extract and the 3- (cyclohexylamino) ethyl propionate, and mixing to prepare fiber slurry;
s2: adding polyvinylpyrrolidone, in-pulp starch CS, a wet strength agent and an inorganic pigment into the fiber slurry to obtain a mixture;
s3: making the mixture into a dialysis paper semi-finished product by a fourdrinier or inclined wire paper machine;
s4: and coating the sizing solution on the surface of the dialysis paper semi-finished product, and drying and coiling to obtain the medical dialysis paper.
9. The method for preparing medical high-strength dialysis paper as claimed in claim 7, wherein the method comprises the following steps: the beating degree of the plant fiber is 15-250SR。
10. The application of the green tangerine peel extract in improving the strength of the medical dialyzing paper is characterized in that: the content of limonin in the green orange peel extract is 28.4 mg/g.
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| CN114875717B (en) * | 2022-04-25 | 2023-07-21 | 浙江科技学院 | Preparation method of degradable high-resistance nanometer dialysis paper for medical protection |
| US11840806B2 (en) | 2022-04-25 | 2023-12-12 | Zhejiang University Of Science And Technology | Environmentally-friendly method for enhancing mechanical properties of high antibacterial nano dialysis paper for medical protection |
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