CN104744735A - Antibacterial type biodegradable plastic and preparation method thereof - Google Patents

Abstract

The invention discloses an antibacterial type biodegradable plastic. The antibacterial type biodegradable plastic is prepared from the following raw materials in parts by weight: 4-8 parts of pine barks, 3-5 parts of camphor barks, 3-5 parts of folium artemisiae argyi powder, 3-5 parts of fresh ginger powder, 3-5 parts of platycodon grandiflorum powder, 3-5 parts of attapulgite soil, 10-15 parts of potato starch, 2-4 parts of oyster powder, 1-2 parts of chitosan, 2-4 parts of sweet wormwood powder, 1-2 parts of tartaric acid, 0.5-1 part of eucalyptus oil, 3-5 parts of rapeseed oil, 1-2 parts of a silane coupling agent KH-550, 10-15 parts of polyethylene and 10-15 parts of composite auxiliaries. The biodegradable plastic disclosed by the invention has good antibacterial and sterilization performances, a high degradation rate, high degradation speed, good flexibility, and relatively high environmental benefits and economic benefits, meets the strength of using requirements, can effectively reduce white pollution.

Description

A kind of antimicrobial form biodegradable plastic and preparation method thereof

Technical field

The present invention relates to plastics arts, be specifically related to a kind of antimicrobial form biodegradable plastic and preparation method thereof.

Background technology

Along with industrial expansion, plastics are widely used in life, but bring a large amount of solid waste, especially Phthalates household plastic goods as all kinds of in plastic packaging bag, shopping bag, plastics cutlery box and mulch film etc. are thrown aside after using becomes solid waste thereupon.Because waste or used plastics is difficult to the characteristic of natural degradation, and harmful treatment process, the plastic refuse of generation is stayed in water body, soil, is formed " white pollution ", makes environmental degradation, and then threatens the existence of the mankind, becomes the public hazards in the world.

For solving the pollution problem that plastic refuse brings, degradable plastics becomes the focus of research and development.Biodegradable plastic is by macromolecular material that the vital movement of microorganism can be degraded very soon under physical environment.Because biodegradable plastic has good degradation property, contribute to alleviating day by day serious plastic garbage problem, avoid the pollution produced environment, bring high Social benefit and economic benefit, market outlook are very wide.

Summary of the invention

The object of this invention is to provide a kind of antimicrobial form biodegradable plastic, degradation rate is high, and degradation speed is fast, and has good snappiness and the intensity meeting service requirements, environmentally friendly.

The present invention is achieved by the following technical solutions:

A kind of antimicrobial form biodegradable plastic, it is characterized in that, it is obtained by the raw material of following weight parts:

Cortex Pini 4-8, Cortex cinnamomi camphorae 3-5, Folium Artemisiae Argyi powder 3-5, Rhizoma Zingiberis Recens powder 3-5, balloonflower powder 3-5, attapulgite 3-5, yam starch 10-15, ostreae testa pulverata 2-4, chitosan 1-2, sweet wormwood powder 2-4, tartrate 1-2, eucalyptus oil 0.5-1, rapeseed oil 3-5, silane resin acceptor kh-550 1-2, polyethylene 10-15, composite assistant 10-15;

Wherein composite assistant is made up of the raw material of following weight part:

Epoxy soybean oil 30-40, lanolin 3-5, amine hydroxybenzene 2-4, whiteruss 2-4, beeswax 1-2, Wickenol 111 0.5-1, glyceryl monostearate 0.1-0.2, Tween-80 0.1-0.2;

Wherein the preparation method of composite assistant is:

First epoxy soybean oil is mixed with lanolin, whiteruss and Wickenol 111, high-speed mixing 20-30min under first normal temperature, add again glyceryl monostearate and Tween-80 in 80-90 DEG C, 1000-1200r/min stirs 5-10min, finally add amine hydroxybenzene and beeswax 400-600r/min at same temperature and stir 1-2h, after cooling and get final product.

A preparation method for antimicrobial form biodegradable plastic, it comprises the following steps:

(1) water is added by solid-liquid weight ratio 2:1-1:1 after Cortex Pini, Cortex cinnamomi camphorae, Folium Artemisiae Argyi powder, Rhizoma Zingiberis Recens powder, balloonflower powder, yam starch, ostreae testa pulverata, sweet wormwood powder, tartrate and chitosan being mixed, dry after 60-80 DEG C of stirring 2-4h, mix with attapulgite again, 100-200 mesh sieve is crossed after grinding evenly, prior to 100-120 DEG C of process 0.5-1h, then under adding the same temperature of silane resin acceptor kh-550, eucalyptus oil and rapeseed oil, 1000-1500r/min stirs 20-30min;

(2) prior to 120-140 DEG C, stir 20-30min under 200-400r/min condition after polyethylene being mixed with composite assistant, then add the mixture that obtains in (1) in 140-160 DEG C, stir 0.5-1h under 600-800r/min condition;

(3) mixture that step (2) obtains is added twin screw extruder, extruding pelletization under 140-160 DEG C of condition, to obtain final product.

Advantage of the present invention is:

The present invention is by carrying out selecting to each raw material and proportioning and improving, the product obtained is made to have good antibacterial, bactericidal property, material compatibility is strong, and degradation property is good, and synergetic property is high, degradation rate is high, degradation speed is fast, and has good snappiness and the intensity meeting service requirements, and production technique is simple, effectively can reduce white pollution, there is higher environmental benefit and economic benefit.

Embodiment

Non-limiting examples of the present invention is as follows:

A kind of antimicrobial form biodegradable plastic, is prepared from by the component raw material of following weight (kg):

Cortex Pini 6, Cortex cinnamomi camphorae 4, Folium Artemisiae Argyi powder 4, Rhizoma Zingiberis Recens powder 4, balloonflower powder 4, attapulgite 4, yam starch 12, ostreae testa pulverata 3, chitosan 1.5, sweet wormwood powder 3, tartrate 1.5, eucalyptus oil 0.8, rapeseed oil 4, silane resin acceptor kh-550 1.5, polyethylene 12, composite assistant 12;

Wherein, composite assistant is made up of the raw material of following weight (kg):

Epoxy soybean oil 35, lanolin 4, amine hydroxybenzene 3, whiteruss 3, beeswax 1.5, Wickenol 111 0.8, glyceryl monostearate 0.15, Tween-80 0.15;

The preparation method of composite assistant:

First epoxy soybean oil is mixed with lanolin, whiteruss and Wickenol 111, high-speed mixing 30min under first normal temperature, add again glyceryl monostearate and Tween-80 in 90 DEG C, 1000r/min stirs 5min, finally add amine hydroxybenzene and beeswax 600r/min at same temperature and stir 2h, after cooling and get final product.

The preparation method of antimicrobial form biodegradable plastic comprises the following steps:

(1) water is added by solid-liquid weight ratio 1:1 after Cortex Pini, Cortex cinnamomi camphorae, Folium Artemisiae Argyi powder, Rhizoma Zingiberis Recens powder, balloonflower powder, yam starch, ostreae testa pulverata, sweet wormwood powder, tartrate and chitosan being mixed, dry after 80 DEG C of stirring 3h, mix with attapulgite again, 200 mesh sieves are crossed after grinding evenly, prior to 120 DEG C of process 0.5h, then under adding the same temperature of silane resin acceptor kh-550, eucalyptus oil and rapeseed oil, 1500r/min stirs 30min;

(2) prior to 140 DEG C, stir 30min under 400r/min condition after polyethylene being mixed with composite assistant, then add the mixture that obtains in (1) in 160 DEG C, stir 0.5h under 800r/min condition;

(3) mixture that step (2) obtains is added twin screw extruder, extruding pelletization under 140-160 DEG C of condition, to obtain final product.

With reference to GB/T1040-2006, tensile property test is carried out to plastics obtained above, record tensile strength 17.6MPa; Material 30d biological degradation rate >=20%.

Claims (2)

1. an antimicrobial form biodegradable plastic, is characterized in that, it is obtained by the raw material of following weight parts:

Cortex Pini 4-8, Cortex cinnamomi camphorae 3-5, Folium Artemisiae Argyi powder 3-5, Rhizoma Zingiberis Recens powder 3-5, balloonflower powder 3-5, attapulgite 3-5, yam starch 10-15, ostreae testa pulverata 2-4, chitosan 1-2, sweet wormwood powder 2-4, tartrate 1-2, eucalyptus oil 0.5-1, rapeseed oil 3-5, silane resin acceptor kh-550 1-2, polyethylene 10-15, composite assistant 10-15;

Described composite assistant is made up of the raw material of following weight part:

Epoxy soybean oil 30-40, lanolin 3-5, amine hydroxybenzene 2-4, whiteruss 2-4, beeswax 1-2, Wickenol 111 0.5-1, glyceryl monostearate 0.1-0.2, Tween-80 0.1-0.2;

The preparation method of described composite assistant is:

First epoxy soybean oil is mixed with lanolin, whiteruss and Wickenol 111, high-speed mixing 20-30min under first normal temperature, add again glyceryl monostearate and Tween-80 in 80-90 DEG C, 1000-1200r/min stirs 5-10min, finally add amine hydroxybenzene and beeswax 400-600r/min at same temperature and stir 1-2h, after cooling and get final product.

2. the preparation method of a kind of antimicrobial form biodegradable plastic according to claim 1, is characterized in that, comprise the following steps:

(1) water is added by solid-liquid weight ratio 2:1-1:1 after Cortex Pini, Cortex cinnamomi camphorae, Folium Artemisiae Argyi powder, Rhizoma Zingiberis Recens powder, balloonflower powder, yam starch, ostreae testa pulverata, sweet wormwood powder, tartrate and chitosan being mixed, dry after 60-80 DEG C of stirring 2-4h, mix with attapulgite again, 100-200 mesh sieve is crossed after grinding evenly, prior to 100-120 DEG C of process 0.5-1h, then under adding the same temperature of silane resin acceptor kh-550, eucalyptus oil and rapeseed oil, 1000-1500r/min stirs 20-30min;

(2) prior to 120-140 DEG C, stir 20-30min under 200-400r/min condition after polyethylene being mixed with composite assistant, then add the mixture that obtains in (1) in 140-160 DEG C, stir 0.5-1h under 600-800r/min condition;

(3) mixture that step (2) obtains is added twin screw extruder, extruding pelletization under 140-160 DEG C of condition, to obtain final product.