CN109021331A - Medical latex film and preparation method thereof - Google Patents
Medical latex film and preparation method thereof Download PDFInfo
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- CN109021331A CN109021331A CN201810746351.5A CN201810746351A CN109021331A CN 109021331 A CN109021331 A CN 109021331A CN 201810746351 A CN201810746351 A CN 201810746351A CN 109021331 A CN109021331 A CN 109021331A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
- C08J2307/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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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
- C08K2201/011—Nanostructured additives
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/092—Polycarboxylic acids
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
- C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
- C08K5/1545—Six-membered rings
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of medical latex films and preparation method thereof, and medical latex film includes following component: 0.01-0.05 parts of nano silver, 0.1-1 parts of water soluble chitosan, 0.1-1 parts of antioxidant, 2-5 parts of antilubricant, 5-10 parts of aqueous polyurethane, 80-90 parts of natural emulsion.Wherein, the antioxidant is tea polyphenols, and antilubricant is tartaric acid.Tea polyphenols have the function of very strong elimination harmful free radicals, and antioxidation is clearly.Tartaric acid is the various organic acids extracted from fruit, is the effective component being present in a variety of natural fruits or Yoghourt, harmless, and is had effects that significant anti-skidding.The present invention also provides a kind of preparation methods of medical latex film.Medical latex film of the invention has the function of inoxidizability and anti-skidding, and has bacteriostasis.
Description
Technical field
The present invention relates to field of material technology more particularly to a kind of medical latex film and preparation method thereof.
Background technique
Heveatex is a kind of sticky milky white liquid, and for appearance as milk, it is rubber particles in Nearly neutral medium
Milky aqueous dispersion, in air due to the effect of oxygen and microorganism, latex acidity increases, 2-12h can natural coagulation, be
Natural coagulation is prevented, a certain amount of ammonia solution need to be added as protective agent.Heveatex belongs to the thermoplasticity synthesis tree of rubber
Rouge its main feature is that filming performance is good when high resiliency, bonding, glue film is imbued with flexibility, thus makes glue film have excellent resistance to bend
Flexible, shock resistance and creep resistance, suitable for the bonding between the bonding and different thermal expansion coefficient material of dynamic lower component.
The mankind long ago begin to the base-material for using Heveatex as adhesive.The characteristics of Heveatex, is that solid content is high, forms a film
Property is good, can arbitrarily adjust viscosity etc., but its resistance to ag(e)ing, oil resistivity, chemical resistance, temperature tolerance, frost resistance are poor.Natural gum
The cohesive force of cream is big, from stickiness height, but since its macromolecular chain polarity is small, therefore and the big adherend of adherend, especially polarity
Tackness is poor.A certain amount of tackifier, such as vegetable oil, mineral oil, terpene resin, rosin, casein, starch, dextrin is added,
The polarity of Heveatex will be improved significantly, and softened, thus improve its stickiness and the tackness to adherend.If
Heveatex and methyl methacrylate are grafted, polarity of chain can also be increased and improve tackness.
Medical latex film using natural emulsion as main component, therefore how to improve medical latex material anti-microbial property,
Antioxygenic property and non-skid property are one of the problems that this field faces.
Summary of the invention
The purpose of the present invention is to provide a kind of medical latex films and preparation method thereof, can significantly improve medical latex
Anti-microbial property, antioxygenic property and the non-skid property of material.
To reach this purpose, the present invention adds tea polyphenols, and tea polyphenols have the function of very strong elimination harmful free radicals,
Antioxidation is clearly.The effects of being embodied in anti-aging and radiation resistance and antibacterial, sterilization.Tea polyphenols have very strong
Antioxidation, it is 6-7 times of VE, the 5- of VC that oxidation resistance, which is artificial synthesized antioxidant BHT, 4-6 times of BHA,
10 times, and dosage is few, and the potential toxic side effect without synthetic；And tea polyphenols can effectively stop radioactive substance intrusion bone
Marrow, and strontium 90 and Co 60 can be made to excrete rapidly, " radiation jinx " is described as by health and medical field.
Silver ion and bacterium haptoreaction, cause cell proper constituent to be destroyed or generate dysfunction and dead.When micro-
When amount silver ion and microbial cell meet, due to silver ion oxidation-reduction potential with higher (± 0.798V, 25 DEG C), and
The latter has negative electrical charge, by Coulomb attraction, the two is made to be closely linked, and silver ion can also the entrance of penetrating cell wall
It in bacterial body, and is reacted with the sulfydryl in bacterium, makes protein coagulating, destroy the activity of cell synzyme, make cell loss point
Split proliferative capacity and dead, while silver ion can also destroy microorganism electron-transport system, respiratory system, substance delivery system,
Cause microbial cell dead, plays bactericidal effect.Meanwhile under the action of light, micro silver ion can be played in catalytic activity
The effect of the heart can activate the oxygen in air or water, generate hydroxyl radical free radical and active oxygen ion, they have very strong energy of oxidation
Power can destroy the proliferative capacity of microbial cell, inhibit or kill bacterium, play bactericidal effect.
The histoorgan and cell of chitosan and human body have good biocompatibility, and the special function with antibacterial anti-inflammatory
Energy.The present invention utilizes heterocoagulation blend method, and water soluble chitosan is introduced into natural emulsion system；And aqueous polyurethane with
Water is solvent, has many advantages, such as that pollution-free, safe and reliable, good mechanical performance, compatibility are good, easily modified.
Tartaric acid, as its name suggests, the various organic acids exactly extracted from fruit are to be present in a variety of natural fruits or Yoghourt
In effective component.Comprising grape acid, malic acid, citric acid and lactic acid etc., because most of by refining in fruit, therefore claim tartaric acid.
It is wherein most wide with the Glycolic acid utilization refined from sugarcane, it is harmless, and have effects that significant anti-skidding.
Specifically, the invention adopts the following technical scheme:
On the one hand, a kind of medical latex film, including following component:
0.01-0.05 parts of nano silver,
0.1-1 parts of water soluble chitosan,
0.1-1 parts of antioxidant,
2-5 parts of antilubricant,
5-10 parts of aqueous polyurethane,
80-90 parts of natural emulsion.
Further, antioxidant is tea polyphenols, and antilubricant is tartaric acid.
Further, the dosage of nano silver is 0.03 part.
Further, the dosage of water soluble chitosan is 0.5 part.
Further, the dosage of aqueous polyurethane is 8 parts.
Further, the dosage of antioxidant is 0.5 part.
Further, the dosage of natural emulsion is 85 parts.
Still further, the content of catechin is 50%-70% in tea polyphenols.
Preferably, the content of catechin is 55%-65% in tea polyphenols.
Further, the dosage of antilubricant is 3 parts.
Still further, the content of Glycolic acid is 40%-60% in tartaric acid.
Preferably, the content of Glycolic acid is 55%-60% in tartaric acid.
Another aspect, a kind of preparation method of medical latex film comprising following steps:
(1) each component is put into reaction kettle, 90-100 DEG C is heated in nitrogen atmosphere, 100-120r/min's
It is stirred continuously under revolving speed, reacts 2-3h, obtain preform；
(2) by preform made from step (1) be sent into double screw extruder, 175-185 DEG C of extrusion temperature, screw speed
40-45Hz, twin-screw extrusion batten is water cooled, air-dried, pelletizing, obtains master batch；
(3) master batch obtained by step (2) is squeezed out into blown film in plastic film blowing machine to get medical film is arrived.
To sum up, medical latex film of the invention has the function of inoxidizability and anti-skidding, and has bacteriostasis, with
Traditional medical latex film is compared, and material therefor of the present invention is nontoxic and pollution-free, harmless.
Specific embodiment
Present invention is further described in detail combined with specific embodiments below.It should be understood that following embodiment is only used
In illustrating the present invention, limitation of the scope of the invention but should not be understood as.
Embodiment 1
A kind of medical latex film, the ingredient including following parts by weight:
Nano silver 0.01kg；
Water soluble chitosan 0.1kg；
Antioxidant 0.1kg；
Antilubricant 2kg；
Aqueous polyurethane 5kg；
Natural emulsion 80kg.
The preparation method of medical latex film the following steps are included:
(1) each component is put into reaction kettle, 90 DEG C is heated in nitrogen atmosphere, under the revolving speed of 100r/min not
Disconnected stirring, reacts 2h, obtains preform；
(2) by preform made from step (1) be sent into double screw extruder, 175 DEG C of extrusion temperature, screw speed 40-
45Hz, twin-screw extrusion batten is water cooled, air-dried, pelletizing, obtains master batch；
(3) master batch obtained by step (2) is squeezed out into blown film in plastic film blowing machine to get medical film is arrived.
Embodiment 2
A kind of medical latex film, including following component:
Nano silver 0.05kg；
Water soluble chitosan 1kg；
Antioxidant 1kg；
Antilubricant 5kg；
Aqueous polyurethane 10kg；
Natural emulsion 90kg.
The preparation method of medical latex film the following steps are included:
(1) each component is put into reaction kettle, 100 DEG C is heated in nitrogen atmosphere, under the revolving speed of 120r/min
It is stirred continuously, reacts 3h, obtain preform；
(2) by preform made from step (1) be sent into double screw extruder, 185 DEG C of extrusion temperature, screw speed 40-
45Hz, twin-screw extrusion batten is water cooled, air-dried, pelletizing, obtains master batch；
(3) master batch obtained by step (2) is squeezed out into blown film in plastic film blowing machine to get medical film is arrived.
Embodiment 3
A kind of medical latex film, including following component:
Nano silver 0.03kg；
Water soluble chitosan 0.5kg；
Antioxidant 0.5kg；
Antilubricant 3kg；
Aqueous polyurethane 8kg；
85 parts of natural emulsion.
The preparation method of medical latex film the following steps are included:
(1) each component is put into reaction kettle, 100 DEG C is heated in nitrogen atmosphere, under the revolving speed of 110r/min
It is stirred continuously, reacts 3h, obtain preform；
(2) by preform made from step (1) be sent into double screw extruder, 180 DEG C of extrusion temperature, screw speed 40-
45Hz, twin-screw extrusion batten is water cooled, air-dried, pelletizing, obtains master batch；
(3) master batch obtained by step (2) is squeezed out into blown film in plastic film blowing machine to get medical film is arrived.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of medical latex film, which is characterized in that the ingredient including following parts by weight:
0.01-0.05 parts of nano silver；
0.1-1 parts of water soluble chitosan；
0.1-1 parts of antioxidant；
2-5 parts of antilubricant；
5-10 parts of aqueous polyurethane
80-90 parts of natural emulsion；
Wherein, the antioxidant is tea polyphenols, and antilubricant is tartaric acid.
2. medical latex film as described in claim 1, which is characterized in that the dosage of the nano silver is 0.03 part.
3. medical latex film as described in claim 1, which is characterized in that the dosage of the water soluble chitosan is 0.5 part.
4. medical latex film as described in claim 1, which is characterized in that the dosage of the aqueous polyurethane is 8 parts.
5. medical latex film as described in claim 1, which is characterized in that the dosage of the antioxidant is 0.5 part.
6. medical latex film as described in claim 1, which is characterized in that the dosage of the natural emulsion is 85 parts.
7. medical latex film as claimed in claim 1 or 5, which is characterized in that the content of catechin is 50%- in tea polyphenols
70%.
8. medical latex film as described in claim 1, which is characterized in that the dosage of the antilubricant is 3 parts.
9. medical latex film as claimed in claim 1 or 8, which is characterized in that the content of Glycolic acid is 40%- in tartaric acid
60%.
10. a kind of preparation method of medical latex film, which is characterized in that preparation method includes the following steps:
(1) each component is put into reaction kettle, 90-100 DEG C is heated in nitrogen atmosphere, in the revolving speed of 100-120r/min
Under be stirred continuously, react 2-3h, obtain preform；
(2) by preform made from step (1) be sent into double screw extruder, 175-185 DEG C of extrusion temperature, screw speed 40-
45Hz, twin-screw extrusion batten is water cooled, air-dried, pelletizing, obtains master batch；
(3) master batch obtained by step (2) is squeezed out into blown film in plastic film blowing machine to get medical film is arrived.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810746351.5A CN109021331A (en) | 2018-07-09 | 2018-07-09 | Medical latex film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810746351.5A CN109021331A (en) | 2018-07-09 | 2018-07-09 | Medical latex film and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109021331A true CN109021331A (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810746351.5A Withdrawn CN109021331A (en) | 2018-07-09 | 2018-07-09 | Medical latex film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276476A (en) * | 2021-12-31 | 2022-04-05 | 中国热带农业科学院橡胶研究所 | Method for improving plasticity retention index of natural rubber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448739A (en) * | 2014-11-25 | 2015-03-25 | 苏州市贝克生物科技有限公司 | Composite medical chitosan/ polycaprolactone film and preparation method thereof |
| CN104877332A (en) * | 2015-05-22 | 2015-09-02 | 苏州市贝克生物科技有限公司 | Method for preparing medical film |
| CN106519335A (en) * | 2016-11-17 | 2017-03-22 | 无锡市长安曙光手套厂 | Medical latex film |
-
2018
- 2018-07-09 CN CN201810746351.5A patent/CN109021331A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448739A (en) * | 2014-11-25 | 2015-03-25 | 苏州市贝克生物科技有限公司 | Composite medical chitosan/ polycaprolactone film and preparation method thereof |
| CN104877332A (en) * | 2015-05-22 | 2015-09-02 | 苏州市贝克生物科技有限公司 | Method for preparing medical film |
| CN106519335A (en) * | 2016-11-17 | 2017-03-22 | 无锡市长安曙光手套厂 | Medical latex film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276476A (en) * | 2021-12-31 | 2022-04-05 | 中国热带农业科学院橡胶研究所 | Method for improving plasticity retention index of natural rubber |
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Application publication date: 20181218 |