CN103113693A - Nano-silver PVC (polyvinyl chloride) lamellar membrane and preparation method thereof - Google Patents

Abstract

The invention provides a nano-silver PVC (polyvinyl chloride) lamellar membrane and a preparation method of the lamellar membrane; the nano-silver PVC lamellar membrane is prepared by fully mixing nano-silver with each component of PVC lamellar membrane, mixing and modifying, and then carrying out the processes of rubber milling, rolling and the like; the nano-silver PVC lamellar membrane has excellent sterilizing property, and thus the nano-silver PVC lamellar membrane can be widely used for industries such as medical treatment, food package and the like conveniently; in addition, the invention further discloses a method for preparing the nano-silver PVC lamellar membrane with two-layer or multi-layer composite structure; by adopting of the method, the practicability of the nano-silver PVC lamellar membrane can be improved and the application scope is extended.

Description

A kind of nanometer silver PVC sheet film and preparation method thereof

Technical field

The present invention relates to the anti-biotic material field, refer to especially a kind of nanometer silver PVC sheet film and preparation method thereof.

Background technology

PVC is Polyvinylchlorid, main component is polyvinyl chloride, PVC sheet film is widely used in the industries such as building materials, packing and medicine, 2 very important reasons are arranged, the first is due to the performance of PVC sheet film uniqueness, comprise rainproof, fire-resistant, antistatic, easy-formation etc., it two is the low characteristics that drop into high yield of PVC sheet film.In view of the global spread wantonly of SARS virus, bird flu, H1N1virus in recent years, and number of the infected constantly increases, by and promoted anti-biotic material in research and development and the fast development in the fields such as military supplies, medical treatment, daily, food product pack.Equally, plastic hot is melted the antibacterial functionalized of composite membrane sheet material, be not only the performance need of material own, and the needs of market development especially, without antibiotic effect, therefore, we need a kind of PVC sheet film that can antibiotic even sterilization to come the requirement of satisfying the market due to traditional PVC sheet film.

Nanometer silver is that particle diameter is accomplished nano level argent simple substance, and it is as the natural antibacterial agent of the high-tech functional materials of a new generation, and its biocidal efficacies has following characteristics:

A. broad-spectrum antimicrobial: nano-Ag particles directly enters thalline and oxygen metabolism enzyme, and (SH) combination, the unique effect mechanism that thalline is choked to death can contact the microorganisms such as most of bacteriums, fungi, mould, spore that kill with it.

B. potent sterilization: nano-Ag particles kill pathogenic organisms rapidly just under lower concentration.

C. perviousness is strong: nano-Ag particles has the fungus-caused tissue infection than the depths of superpower perviousness good germicidal action is all arranged.

D. antibiotic lasting, reparative regeneration, safety non-toxic has no drug resistance etc.

Nanometer silver has the bactericidal property of excellence like this, therefore should apply it to larger field, for people provide a cleaner environment.

Summary of the invention

The present invention proposes a kind of nanometer silver PVC sheet film and preparation method thereof, has the bactericidal property that PVC sheet film is widely used performance and nanometer silver, has enlarged greatly use range, the practicality of the PVC sheet film of increase.

Technical scheme of the present invention is achieved in that a kind of nanometer silver PVC sheet film, comprises each component of following weight part:

Choosing of the concrete content of above each component carried out according to performance, demand to product.

Further, described softening agent is phthalic ester plasticizer, comprises dimixo-octyl phthalate, diisononyl phthalate etc., is mainly the toughness of regulating described nanometer silver PVC sheet film.

further, described stablizer is powdery or liquid composite stabilizing agent, the selection of the stablizer of this different states, mainly be the demand to product, if want to obtain the good nanometer silver PVC of a kind of transparency sheet film, so just select liquid composite stabilizing agent, perhaps transparency is not required, can select powdery stabilizer, select which kind of stablizer, there is no much difference for described nanometer silver PVC sheet film on other performances, and the reason of adding described stablizer in described nanometer silver PVC sheet film is, polyvinyl chloride resin is for thermo-responsive, thermolysis easily occurs, therefore need described stablizer to slow down reaction, keep chemical equilibrium, in the present invention, described stablizer commonly used has one package stabilizer, metal soap stablizer etc., such as Ba/Zn or Ca/Zn, wherein Ba/Zn is nontoxic, without sulfide staining, be suitable for very much the making of the described nanometer silver PVC sheet film of transparent container.

Further, described fire retardant is given described nanometer silver PVC sheet film flame retardancy, and fire retardant described in the present invention adopts inorganic combustion inhibitor, comprises as antimonous oxide, aluminium hydroxide etc.

Further, described static inhibitor is the quaternary ammonium salt static inhibitor, described static inhibitor can reduce described nanometer silver PVC sheet film volume resistance, prevent that static from accumulating.

Further, described filler is mineral filler, comprises as calcium carbonate, barium sulfate or wollastonite etc.

Further, described binding agent is isocyanic ester, and the kind of described mildew-resistant auxiliary agent has a lot, such as antibiotic anti-mildew becomes auxiliary agent, is mainly be used to the antimildew and antibacterial performance that improves described nanometer silver PVC sheet film.

The preparation method of above-mentioned nanometer silver PVC sheet film comprises following workshop section:

A. ingredient station: comprise the batching operation of carrying out according to each component described above and content thereof and carry operation;

B. plastify workshop section: comprise the operation of kneading, banburying operation that batching is carried out, open the refining operation, planet is extruded operation and calendering formation operation;

C. pressing section: comprise deflecting from operation, refrigerating work procedure, trimming operation, meter code operation and winding process with what product after calendering formation carried out;

Further, to use and the product radiation scope in order enlarging, to satisfy the more market requirement and application target, we can also comprise following workshop section:

D. compound workshop section: comprise that base material unreels operation, preheating procedure and introduces compound working procedure, described compound workshop section is undertaken compoundly by introducing component after compound working procedure and described calendering formation operation, then continues to enter pressing section.

Described base material can be fibre product, paper, metal, plastics etc., thereby obtains the not more superior product of one side performance, such as adopting fibre product as base material, can improve greatly the anti-pull intensity of described nanometer silver PVC sheet film, and is more durable in use.

Equally, described nanometer silver PVC sheet film for the structure composite of some two layers or multilayer, we can will carry out compound through two of formative stage or polylith product, thereby obtain the described nanometer silver PVC sheet film of two layers or multilayer, obtain a product that performance is more excellent, adapt to wider environment for use.

Above each operation is the known technology of this administrative staff, therefore get final product with reference to prior art, for the different product of demand not, each operation may be slightly different.

beneficial effect of the present invention is: the present invention is by blending and modifying technology and adding technology, nanometer silver and the component of preparation PVC film are carried out blend, and employing rolling process technique, obtained described nanometer silver PVC sheet film, described nanometer silver PVC sheet film is efficient with nanometer silver, the bactericidal property of wide spectrum is applied on the PVC film, make described nanometer silver PVC sheet film have good sterilization effect, thereby can apply it to medical treatment, the fields such as food product pack, use safer, simultaneously, the invention also discloses a kind of compound new technology route that is fit to two layers or multilayered structure, also make the product of described nanometer silver PVC sheet film more diversified, also just enlarged the use range of described nanometer silver PVC sheet film, practicality is stronger.

Embodiment

For understanding better the present invention; below by following examples, the present invention is done further concrete elaboration; but unintelligible is limitation of the invention; some nonessential improvement and adjustment for those skilled in the art does according to the foregoing invention content also are considered as dropping in protection scope of the present invention.

Embodiment 1

We take each component of following weight part:

Then carry out following operation:

After above-mentioned each component that takes is mixed, then enter in high-speed mixer by delivery system and mediate;

After kneading, component is sent as carrying out banburying in Banbury mixer (internal rubber mixer);

Component after banburying delivers in mill (opening rubber mixing machine) and opens refining;

After opening component after refining and entering planetary extruder again, planet is extruded;

The component that planet is extruded is rolled film in blocks by rolling press

The sheet film that deflects to rolling, cooling, rolling, obtains finished product 1

Embodiment 2

We take each component of following weight part:

Then we carry out operating with the operation steps in embodiment 1 to each above-mentioned component, obtain finished product 2.

Embodiment 3

We take each component of following weight part:

Then we carry out operating with the operation steps in embodiment 1 to each above-mentioned component, and its difference is, in embodiment 3, also comprises compound workshop section, and it comprises the following steps:

A, choose cloth and unreel (can be also other base materials according to the actual needs) as base material;

B, then cloth substrate is carried out preheating;

Introduce composite for base fabric after c, preheating;

D, this moment fit with rolling the component that in step 5;

E, then continue with step 6 operation, deflect from, cooling, rolling, obtain finished product 3.

Embodiment 4

According to embodiment 1 and embodiment 2, we carry out the operation of embodiment 4:

We fit embodiment 1 (according to the situation of reality, also can adopt glue bonding) by rolling press with implementing 2 finished product, obtain finished product 4, and finished product 4 is the nanometer silver PVC sheet film of two layers of composite structure.

Then, we test the finished product that obtains, and its performance as the PVC material still keeps, and newly-increased bactericidal property detects by standard testing, tests as follows:

We get finished product 1,2,3 and 4, and in addition, we have also chosen company, and the product of traditional antibiotic plastic composite sheet film was as sample 5 in the past, and common plastics composite sheet film contrasts as sample 6, chooses the vinylchlorid disk as blank.

Test bacterial classification and reference method: intestinal bacteria (ATCC25922), QB/T2591-2003/ film applicator coating result is:

Sample number	Antibiotic rate/%	Sample number	Antibiotic rate/%
				Finished product 1	99.9	Finished product 4	99.8
Finished product 2	99.7	Sample 5	10.1
				Finished product 3	99.9	Sample 6	0

Experiment shows: the antibacterial of nanometer silver PVC sheet film is apparently higher than traditional antibiotic plastic composite membrane sheet material, and traditional antibiotic packaging material antibacterial effect only has 15% left and right, and its antibacterial ability of PVC film sheet that has added nanometer silver has reached 99.More than 7%.

The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (9)

1. a nanometer silver PVC sheet film, is characterized in that, comprises each component of following weight part:

2. nanometer silver PVC sheet film as described in claim 1, it is characterized in that: described softening agent is phthalic ester plasticizer.

3. nanometer silver PVC sheet film as described in claim 1, it is characterized in that: described stablizer is powdery or liquid composite stabilizing agent.

4. nanometer silver PVC sheet film as described in claim 1, it is characterized in that: described fire retardant is inorganic combustion inhibitor.

5. nanometer silver PVC sheet film as described in claim 1, it is characterized in that: described static inhibitor is the quaternary ammonium salt static inhibitor.

6. nanometer silver PVC sheet film as described in claim 1, it is characterized in that: described filler is mineral filler.

7. nanometer silver PVC sheet film as described in claim 1, it is characterized in that: described binding agent is isocyanic ester.

8. the preparation method of nanometer silver PVC sheet film as described in claim 1, is characterized in that, comprises following workshop section:

A. ingredient station: the batching operation that described in comprising according to claim 1, each component and content thereof carry out and carry operation;

B. plastify workshop section: comprise the operation of kneading, banburying operation that batching is carried out, open the refining operation, planet is extruded operation and calendering formation operation;

C. pressing section: comprise deflecting from operation, refrigerating work procedure, trimming operation, meter code operation and winding process with what product after calendering formation carried out;

9. the preparation method of nanometer silver PVC sheet film as described in claim 8, is characterized in that, also comprises following workshop section:

D. compound workshop section: comprise that base material unreels operation, preheating procedure and introduces compound working procedure, described compound workshop section is undertaken compoundly by introducing component after compound working procedure and described calendering formation operation, then continues to enter pressing section.