CN103059380A

CN103059380A - Antibacterial hdpe plastic

Info

Publication number: CN103059380A
Application number: CN2013100035400A
Authority: CN
Inventors: 黄美蓉
Original assignee: Shanghai Qiucheng New Material Technology Co Ltd
Current assignee: Nanjing solid packing container Co., Ltd.
Priority date: 2013-01-06
Filing date: 2013-01-06
Publication date: 2013-04-24
Anticipated expiration: 2033-01-06
Also published as: CN103059380B

Abstract

The invention discloses antibacterial HDPE plastic comprising the components of, by weight, 100 parts of HDPE and 0.3-0.5 parts of a composite antibacterial agent. The composite antibacterial agent is composed of the components of, by weight: 2-6 parts of cedar oil, 4-8 parts of chitosan, 10-20 parts of nano-grade copper oxide, 15-25 parts of nano-grade silver oxide, 30-50 parts of polyhexamethylene guanidine phosphate, and 2-4 parts of trichlorocarbanilide. The antibacterial HDPE plastic provided by the invention has high bacterium inhibition, bacterium killing, and anti-mildew effects. The antibacterial HDPE plastic can be used in packaging.

Description

Antibiotic HDPE plastics

Technical field

The present invention relates to a kind of antibiotic plastic, relate in particular to a kind of antibiotic HDPE plastics.

Background technology

Occurring in nature exist various galley proofs microorganism, in daily life, microorganism has inseparable contacting with people, and part bacterium, fungi, virus etc. human health even threat to life as the pathogenic bacteria serious harm.The number that data presentation according to statistics, the whole world cause death because bacterium infects every year accounts for 30% of total toll near 2,000 ten thousand; The U.S. " WHO " magazine statistic data showed in 1996: nineteen ninety-five, about 5,200 ten thousand people in the whole world were dead, and wherein about 1,700 ten thousand is because bacterium Infective and dead.These disease lifes will comprise cholera, pneumonia, disease disease, tuberculosis and hepatitis etc.As everyone knows, the serious respiratory tract infection sick (SARS) that " foot and mouth disease ", " anthrax " of the U.S., China that " mad cow disease " broken out in Britain in nearly ten years, Korea S and Japan occur occurred in 2003 and the bird flu that occurred and continued into the present in 2004 allow All Around The World be absorbed in fear, and bacterium brings people's each disaster so that people have brought up to unprecedented height to the attention degree of disease Control and prevention.In hospital, cross-infection rate then surpasses 10%.This shows that malignant bacteria has brought huge threat to human health really.

Face the harm of the malignant bacteria that is becoming increasingly rampant, the mankind constantly study and explore at antibiosis.Use from initial fugitive sterilization to the long acting antibiotic product.Particularly after the bird flu, the more antimicrobial product market of having crowded into.The ancient Egyptian was just covered silver strip with wound and is prevented that bacterium from infecting before more than 4000 years; The men of old protects mummy with medicinal antibacterial plant.During World War II, Reichsweshr is by disinfecting to reduce the infection of wound to military uniform.

Along with growth in the living standard, people are also more and more higher to the requirement of living environment.Thus, the production of anti-biotic material has become an emerging industry, and countries in the world are paid attention to more to the research of antiseptic-germicide.On the microbiology angle, antibiotic concept is distinguishing with sterilization on to the control of germ, it does not also require and can kill immediately HUMAN HEALTH or life, production environment harmful microorganism, and focus in long-term use procedure, the growth and breeding that suppresses the wound door, the sanitation and hygiene of maintenance environment.We are usually said antibioticly often to have comprised sterilization, except meanings such as mould, sterilizations.In general, the requirement of antiseptic-germicide had: (l) antibacterial ability and broad spectrum antibacterial; (2) long-lasting, namely wash resistant, wear-resistant, the life-span is long; (3) weather resisteant, namely heat-resisting, anti-sunshine, be difficult for decomposition failure; (4) with consistency or the workability of base material, namely easily add nondiscoloration in the base material to, do not reduce product performance; (5) security is harmless to the health, and does not cause the pollution to environment; (6) bacterium is difficult for producing resistance.

Antibiotic plastic refers to add antiseptic-germicide in plastics, make plastics itself have germ resistance, can within a certain period of time the bacterium of contamination on plastics be killed or suppress, compare with physical method with the chemistry of routine, use antibiotic plastic sterilization timeliness long, not only economy but also make things convenient for.Antiseptic-germicide can divide inorganic, organic and 3 types of natural biological antiseptic-germicides.Because different antiseptic-germicide is different to the Antibacterial mechanism of pathogenic bacteria of the same race and validity, and antiseptic-germicide of the same race is also different with the inhibition scope for the anti-microbial effect mechanism of different pathogenic bacterias, therefore, work out not only long-acting but also wide spectrum, not only efficient but also safe antiseptic-germicide, very important to antibiotic research on mechanism.

The development and application of antibiotic plastic is that to protect mankind health has been set up green screen one, for improving environment for human survival, reduces disease, the protection fitness-for-all, and tool is of great significance.Because antibiotic plastic can fundamentally reduce or avoid the cross infection of bacterium between person to person, people and thing, thing and the thing, the plastics with antibacterial generally are subject to people's attention and welcome.In the last thirty years, the preparation of antibiotic plastic has also had unprecedented high speed development.

Yet, a kind of HDPE plastics are not arranged at present, can be effectively antibiotic.

Summary of the invention

For above shortcomings in the prior art, technical problem to be solved by this invention provides a kind of antibiotic HDPE plastics.

The present invention is achieved through the following technical solutions:

A kind of antibiotic HDPE plastics, the component that comprises following weight parts: HDPE100 part, complex antimicrobials 0.3-0.5 part, described complex antimicrobials is comprised of following component: cedar(wood)oil, chitosan, nano cupric oxide, nano phase ag_2 o, polyhexamethylene guanidine phosphoric acid salt and TCC.

Preferably,

Described complex antimicrobials is made of by weight following component: cedar(wood)oil 2-6 part, chitosan 4-8 part, nano cupric oxide 10-20 part, nano phase ag_2 o 15-25 part, polyhexamethylene guanidine phosphoric acid salt 30-50 part, TCC 2-4 part.

Cedar(wood)oil, chitosan, nano cupric oxide, nano phase ag_2 o, polyhexamethylene guanidine phosphoric acid salt and TCC are mixed, can make this complex antimicrobials.

Described antibiotic HDPE plastics also comprise dispersion agent 0.2-0.4 part, and described dispersion agent is a kind of or its mixture in ethylene bis stearamide, stearic acid, polyethylene wax, the whiteruss.

Described antibiotic HDPE plastics, also comprise compatilizer 2-4 part, described compatilizer is a kind of or its mixture in polypropylene grafted maleic anhydride, polypropylene grafted carboxylic acid, Chlorinated Polypropylene III, polypropylene grafted glycidyl methacrylate, Research of Grafting Malaic Anhydride Onto Polyethylene and methacrylic acid-styrene butadiene polymkeric substance.

Obviously, in the present invention for improving other performances of product, can also in the blend material, add adaptively other auxiliary agents, such as oxidation inhibitor, softening agent, toughener, fire retardant, static inhibitor, nucleator, toughner, weighting agent, lubricant and pigment etc., its consumption is the conventional amount used of the industry, or adjusts according to the requirement of practical situation.

Concrete, Raw of the present invention is introduced:

Cedar(wood)oil, Chinese another name: Cedrus deoclar (Roxb.) G. Don oil, English name China cedar wood oil, English another name: Cedarwood oil Natural; Cedar oil; Cedarwood oil BPC; Cypress; Cedarwood Oil EINECS:285-360-9.CAS number: 8000-27-9.

Chitosan has another name called: chitosan, chitosan, 2-amino-beta-1,4-dextran Chitosan.English name: Poly (beta-(Isosorbide-5-Nitrae)-2-amino-2-deoxy-D-glucose).CAS number: 9012-76-4.

Nano cupric oxide, particle diameter are 10-100nm.Nano phase ag_2 o, particle diameter are 10-100nm.

Polyhexamethylene guanidine phosphoric acid salt, Polyhexamethyleneguanidine phosphate, CAS accession number: 89697-78-9.

TCC, English name 3,4,4'-Trichlorodiphenylurea; Triclocarban, CAS accession number: 101-20-2.

Ethylene bis stearamide has another name called N, N'-ethylene bis stearamide, vinyl bis-stearamides.English name: N, N'-Ethylenebis (stearamide).CAS accession number: 110-30-5.

Stearic acid, English name: stearic acid, CAS number: 57-11-4.

Polyethylene wax, another name PE wax is formed by vinyl polymerization Rubber processing agent.

Whiteruss, English name: liquid paraffin.

Compatilizer claims again expanding material, refers to by means of intermolecular linkage force, impels inconsistent two kinds of polymer scales to be combined in one, and then obtains the auxiliary agent of stable blend, refers to polymer bulking agents here.PE-g-ST, PP-g-ST, ASA-g-MAH, PE-g-MAH, PP-g-MAH etc. are applied in the modifying plastics, obtain the good blend material of performance.In the present invention, compatilizer is preferably a kind of or its mixture in polypropylene grafted maleic anhydride, polypropylene grafted carboxylic acid, Chlorinated Polypropylene III, polypropylene grafted glycidyl methacrylate, Research of Grafting Malaic Anhydride Onto Polyethylene and methacrylic acid-styrene butadiene polymkeric substance.

HDPE, Chinese: high density polyethylene(HDPE) English name: high density polyethylene.High density polyethylene(HDPE) is nontoxic, tasteless, the white particle of odorless, fusing point are 130 ℃, and relative density is 0.941-0.960, it has good thermotolerance and winter hardiness, chemical stability is good, also has higher rigidity and toughness, and physical strength is good, dielectric properties, environmental stress crack resistance are also better.

Antibiotic HDPE plastics of the present invention can adopt industry universal method to be prepared, and for example: take by weighing each raw material by proportioning, after mixing, melting mixing, extruding pelletization namely obtain described antibiotic HDPE plastics.

Antibiotic HDPE plastics of the present invention have the effect of potent anti-bacteria, kill bacteria and mildew-resistant, can be used for packing purposes.

Embodiment

Following HDPE all selects the HDPE5300E of Daqing petrochemical company.

Embodiment 1

Take by weighing: 4 kilograms of cedar(wood)oil, 6 kilograms of chitosans, 15 kilograms of nano cupric oxides, 20 kilograms of nano phase ag_2 os, 40 kilograms of polyhexamethylene guanidine phosphoric acid salt, 3 kilograms of TCCs.Mix, namely make complex antimicrobials.

Embodiment 2

Take by weighing each raw material according to corresponding embodiment 2 data in the table 1.Each component is mixed in mixing machine, rotating speed 300-400r.p.m, mixed 5-10 minute, again melting mixing, extruding pelletization in twin screw extruder, the pellet of extruding was dried 9 hours in 90 ℃ of constant temperature ovens, then become the plastic sample of 50mm * 50mm at injection temperature 200-220 ℃ hemostasis, carry out antibacterial test, test data sees Table 2.Antibacterial test standard: QB/T2591-2003A " antibiotic plastic anti-microbial property test method and antibacterial effect ".Detect and use bacterium: intestinal bacteria (Escherichia coli) ATCC25922, streptococcus aureus (Staphy lococcus aureus) ATCC6538.

Embodiment 3

Take by weighing each raw material according to corresponding embodiment 3 data in the table 1.Method by embodiment 2 is prepared plastic sample, carries out antibacterial test again.

Embodiment 4

Take by weighing each raw material according to corresponding embodiment 4 data in the table 1.Method by embodiment 2 is prepared plastic sample, carries out antibacterial test again.

Table 1: antibiotic HDPE plastic formula list position: kilogram

?	Embodiment 2	Embodiment 3	Embodiment 4	Comparative Examples 3	Comparative Examples 4
						HDPE	100	100	100	100	100
The complex antimicrobials of embodiment 1	0.4	0.4	0.4	?	?
						The complex antimicrobials of Comparative Examples 1	?	?	?	0.4	?
The complex antimicrobials of Comparative Examples 2	?	?	?	?	0.4
						Ethylene bis stearamide	?	0.3	0.3	?	?
The ASA grafted maleic anhydride	?	?	3	?	?

Table 2:HDPE plastics anti-microbial property test chart

?	Embodiment 2	Embodiment 3	Embodiment 4	Comparative Examples 3	Comparative Examples 4
						The intestinal bacteria sterilizing rate, %	95.6	95.8	99.9	92.0	92.4
The streptococcus aureus sterilizing rate, %	97.0	96.8	99.9	91.4	91.6

Comparative Examples 1

Take by weighing: 6 kilograms of chitosans, 15 kilograms of nano cupric oxides, 20 kilograms of nano phase ag_2 os, 44 kilograms of polyhexamethylene guanidine phosphoric acid salt, 3 kilograms of TCCs.Mix, namely make complex antimicrobials.

Comparative Examples 2

Take by weighing: 4 kilograms of cedar(wood)oil, 15 kilograms of nano cupric oxides, 20 kilograms of nano phase ag_2 os, 46 kilograms of polyhexamethylene guanidine phosphoric acid salt, 3 kilograms of TCCs.Mix, namely make complex antimicrobials.

Comparative Examples 3

Take by weighing each raw material according to corresponding Comparative Examples 3 data in the table 1.Method by embodiment 2 is prepared plastic sample, carries out antibacterial test again.

Comparative Examples 4

Take by weighing each raw material according to corresponding Comparative Examples 4 data in the table 1.Method by embodiment 2 is prepared plastic sample, carries out antibacterial test again.

Claims

1. antibiotic HDPE plastics, it is characterized in that, the component that comprises following weight parts: HDPE100 part, complex antimicrobials 0.3-0.5 part, described complex antimicrobials is comprised of following component: cedar(wood)oil, chitosan, nano cupric oxide, nano phase ag_2 o, polyhexamethylene guanidine phosphoric acid salt and TCC.

2. antibiotic HDPE plastics as claimed in claim 1, it is characterized in that: described complex antimicrobials is made of by weight following component: cedar(wood)oil 2-6 part, chitosan 4-8 part, nano cupric oxide 10-20 part, nano phase ag_2 o 15-25 part, polyhexamethylene guanidine phosphoric acid salt 30-50 part, TCC 2-4 part.

3. antibiotic HDPE plastics as claimed in claim 2, it is characterized in that: also comprise dispersion agent 0.2-0.4 part, described dispersion agent is a kind of or its mixture in ethylene bis stearamide, stearic acid, polyethylene wax, the whiteruss.

4. antibiotic HDPE plastics as claimed in claim 2, it is characterized in that: also comprise compatilizer 2-4 part, described compatilizer is a kind of or its mixture in polypropylene grafted maleic anhydride, polypropylene grafted carboxylic acid, Chlorinated Polypropylene III, polypropylene grafted glycidyl methacrylate, Research of Grafting Malaic Anhydride Onto Polyethylene and methacrylic acid-styrene butadiene polymkeric substance.