CN109705556A - A kind of environment-friendly degradable plastics and preparation method thereof - Google Patents
A kind of environment-friendly degradable plastics and preparation method thereof Download PDFInfo
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- CN109705556A CN109705556A CN201910034029.4A CN201910034029A CN109705556A CN 109705556 A CN109705556 A CN 109705556A CN 201910034029 A CN201910034029 A CN 201910034029A CN 109705556 A CN109705556 A CN 109705556A
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Abstract
The present invention provides a kind of environment-friendly degradable plastics and preparation method thereof, is related to technical field of plastic.The environment-friendly degradable plastics are made of raw material from the following weight: 40-50 parts of polylactide, 12-14 parts of poly butylene succinate, 4-8 parts of polyvinyl chloride, 4-10 parts of plant fiber, 30-40 parts of graft starch, 1-3 parts of calcium oxide, 1-3 parts of oligosaccharide, 1-1.6 parts of nano silica, 1-2 parts of polyaluminium chloride, 0.6-1.6 parts of sodium bismuthate, 0.4-0.8 parts of dispersing agent, 0.2-0.5 parts of crosslinking agent, 1-1.2 parts of plasticizer.The present invention overcomes the deficiencies in the prior art, are combined using a variety of biodegradable components, prepare starch blending plastics, keep products obtained therefrom effectively degradable, and production simple process, convenient for production, at low cost, suitable popularization production.
Description
Technical field
The present invention relates to technical field of plastic, and in particular to a kind of environment-friendly degradable plastics and preparation method thereof.
Background technique
Plastics are due to light, chemical stabilization, will not corrode, and impact resistance waits good characteristics to replace most of basis well
Material at common raw material for people's lives, but since plastics are not degradable as high molecular material, causes greatly environment
Ground harm.In face of the white pollution problems got worse, it is desirable to find a kind of existing plastics performance of energy substitution, and do not cause
The plastic-substitute of white pollution, degradation plastic come into being, the plastics of this new function, its main feature is that certain reaching
After service life is discarded, under certain environmental conditions, since significant change occurs for its chemical structure, cause certain performance loss
And cosmetic variation and degrade, harmless to natural environment or few evil.
Degredation plastic is generally divided into four major class: photodegradable plastics, biodegradable plastic, light/biodegradable plastic, water
Degradative plastics；Wherein photodegradable plastics are to mix photosensitizer in the plastic, decompose plastics gradually.It belongs to relatively early
Generation degradative plastics, the disadvantage is that degradation time is because it is difficult to predict thus be unable to control degradation time for sunshine and climate change；
Biodegradable plastic is can be completely decomposed into the plastics of low molecular compound, but technique is more multiple under the action of microorganism
It is miscellaneous；Light/biodegradable plastic has both the advantages of photodegradable plastics and biodegradable plastic, but higher cost；Water degradative plastics
It is mainly used for medical industry, convenient for disinfection and destroys, it is larger using limiting.So a can effectively degrade, and at low cost,
Simple process can plastics be indirectly the emphasis studied now.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of environment-friendly degradable plastics and preparation method thereof, using a variety of lifes
Biodegradable prepares starch blending plastics at subassembly, keeps products obtained therefrom effectively degradable, and production technique
Simply, convenient for production, at low cost, it is suitble to promote production.
In order to achieve the above object, technical solution of the present invention is achieved by the following technical programs:
A kind of environment-friendly degradable plastics, the environment-friendly degradable plastics are made of raw material from the following weight: polylactide
40-50 parts, 12-14 parts of poly butylene succinate, 4-8 parts of polyvinyl chloride, 4-10 parts of plant fiber, 30-40 parts of graft starch,
1-3 parts of calcium oxide, 1-1.6 parts of nano silica, 1-2 parts of polyaluminium chloride, 0.6-1.6 parts of sodium bismuthate, divides 1-3 parts of oligosaccharide
0.4-0.8 parts of powder, 0.2-0.5 parts of crosslinking agent, 1-1.2 parts of plasticizer.
The environment-friendly degradable plastics are made of raw material from the following weight: 45 parts of polylactide, poly-succinic acid-butanediol
13 parts of ester, 6 parts of polyvinyl chloride, 7 parts of plant fiber, 35 parts of graft starch, 2 parts of calcium oxide, 2 parts of oligosaccharide, nano silica
1.3 parts, 1.5 parts of polyaluminium chloride, 1.2 parts of sodium bismuthate, 0.6 part of dispersing agent, 0.3 part of crosslinking agent, 1.1 parts of plasticizer.
Preferably, the dispersing agent is the mixture of barium stearate, polyethylene wax and polyethylene glycol mass ratio 2: 1: 1.
Preferably, the crosslinking agent is cumyl peroxide, benzoyl peroxide, di-tert-butyl peroxide, peroxide
Change any one in hydrogen diisopropylbenzene (DIPB).
Preferably, the plasticizer is di-n-octyl phthalate, BBP(Butyl Benzyl Phthalate, phthalic acid di-secondary
Any one in monooctyl ester, dicyclohexyl phthalate.
The preparation methods of the environment-friendly degradable plastics the following steps are included:
(1) it after high temperature and pressure is stirred after mixing polylactide, poly butylene succinate and polyvinyl chloride, obtains mixed
It is spare to close base-material；
(2) will after plant fiber, graft starch and calcium oxide mixed grinding be added deionized water carry out high-speed stirred, then plus
Enter oligosaccharide and be placed in ultrasonic vibration instrument to carry out concussion homogeneous, it is spare to obtain mixed slurry；
(3) dispersing agent, nano silica, polyaluminium chloride, sodium bismuthate is added in above-mentioned mixed resin and mixes heating stirring
Mixed slurry and crosslinking agent and plasticizer in step (2) are added afterwards, it is spare to obtain bottom material after continuing to stir completely；
(4) above-mentioned bottom material is obtained into degradable plastic masterbatch, then master batch is set using squeezing out in Twin screw extruder
In injection molding machine, environment-friendly degradable plastics of the present invention are obtained using high temperature dwell pressure injection.
Preferably, the pressure of step (1) the high temperature high-pressure stirring mixing is 25-30MPa, and temperature is 80-100 DEG C,
Mixing time is 40-50min.
Preferably, the quality that deionized water is added in the step (2) is plant fiber, graft starch and calcium oxide mixing
4-5 times, and with frequency be 40KHz, power density 0.8W/cm2Under the conditions of ultrasonic homogeneous 5-8min.
Preferably, the temperature of heating stirring is 80-100 DEG C, mixing time 15-20min in the step (3), is continued
Stirring the complete time is 30-35min.
Preferably, the temperature of step (4) the high temperature pressure maintaining injection molding is 120-130 DEG C, pressure 60MPa, injection speed
Degree is 40cm3/s。
The present invention provides a kind of environment-friendly degradable plastics and preparation method thereof, and advantage is compared with prior art:
(1) present invention is used as base-material using polylactide, poly butylene succinate and polyvinyl chloride mixing, forms sediment with grafting
Powder is mixed with plastics of the present invention, the mechanics effect and heat-resisting quantity that product is promoted while product degradation can be effectively ensured
Energy.
(2) present invention can effectively promote the degradation efficiency of product, and drop added with substances such as sodium bismuthate, polyaluminium chlorides
Pollutant component, safety and environmental protection are not generated when solution.
(3) plastics of the present invention simple process, and use ingredient safety and environmental protection during the preparation process, reduces production cost, mentions
Economic benefit is risen, Law of Market Economy for A Rapid Use is met.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of environment-friendly degradable plastics, the environment-friendly degradable plastics are made of raw material from the following weight: polylactide
40 parts, 12 parts of poly butylene succinate, 4 parts of polyvinyl chloride, 4 parts of plant fiber, 30 parts of graft starch, 1 part of calcium oxide, oligomerization
Sugared 1 part, 1 part of nano silica, 1 part of polyaluminium chloride, 0.6 part of sodium bismuthate, 0.4 part of dispersing agent, 0.2 part of crosslinking agent, plasticizer 1
Part.
Wherein, the dispersing agent is the mixture of barium stearate, polyethylene wax and polyethylene glycol mass ratio 2: 1: 1；It is described
Crosslinking agent is benzoyl peroxide；The plasticizer is dicyclohexyl phthalate.
The preparation methods of the environment-friendly degradable plastics the following steps are included:
(1) it after high temperature and pressure is stirred after mixing polylactide, poly butylene succinate and polyvinyl chloride, obtains mixed
It is spare to close base-material；
(2) will after plant fiber, graft starch and calcium oxide mixed grinding be added deionized water carry out high-speed stirred, then plus
Enter oligosaccharide and be placed in ultrasonic vibration instrument to carry out concussion homogeneous, it is spare to obtain mixed slurry；
(3) dispersing agent, nano silica, polyaluminium chloride, sodium bismuthate is added in above-mentioned mixed resin and mixes heating stirring
Mixed slurry and crosslinking agent and plasticizer in step (2) are added afterwards, it is spare to obtain bottom material after continuing to stir completely；
(4) above-mentioned bottom material is obtained into degradable plastic masterbatch, then master batch is set using squeezing out in Twin screw extruder
In injection molding machine, environment-friendly degradable plastics of the present invention are obtained using high temperature dwell pressure injection.
The pressure of step (1) the high temperature high-pressure stirring mixing is 25-30MPa, and temperature is 80-100 DEG C, mixing time
For 40-50min；The quality that deionized water is added in the step (2) is the 4- of plant fiber, graft starch and calcium oxide mixing
5 times with frequency are 40KHz, power density 0.8W/cm2Under the conditions of ultrasonic homogeneous 5-8min；Heating is stirred in the step (3)
The temperature mixed is 80-100 DEG C, mixing time 15-20min, continues to stir the complete time as 30-35min；The step (4)
The temperature of high temperature pressure maintaining injection molding is 120-130 DEG C, pressure 60MPa, injection speed 40cm3/s。
Embodiment 2:
A kind of environment-friendly degradable plastics, the environment-friendly degradable plastics are made of raw material from the following weight: polylactide
50 parts, 14 parts of poly butylene succinate, 8 parts of polyvinyl chloride, 10 parts of plant fiber, 40 parts of graft starch, 3 parts of calcium oxide, widow
3 parts of glycan, 2 parts of polyaluminium chloride, 1.6 parts of sodium bismuthate, 0.8 part of dispersing agent, 0.5 part of crosslinking agent, increases 1.6 parts of nano silica
1.2 parts of agent of modeling.
Wherein, the dispersing agent is the mixture of barium stearate, polyethylene wax and polyethylene glycol mass ratio 2: 1: 1；It is described
Crosslinking agent is cumyl peroxide；The plasticizer is BBP(Butyl Benzyl Phthalate.
The preparation methods of the environment-friendly degradable plastics the following steps are included:
(1) it after high temperature and pressure is stirred after mixing polylactide, poly butylene succinate and polyvinyl chloride, obtains mixed
It is spare to close base-material；
(2) will after plant fiber, graft starch and calcium oxide mixed grinding be added deionized water carry out high-speed stirred, then plus
Enter oligosaccharide and be placed in ultrasonic vibration instrument to carry out concussion homogeneous, it is spare to obtain mixed slurry；
(3) dispersing agent, nano silica, polyaluminium chloride, sodium bismuthate is added in above-mentioned mixed resin and mixes heating stirring
Mixed slurry and crosslinking agent and plasticizer in step (2) are added afterwards, it is spare to obtain bottom material after continuing to stir completely；
(4) above-mentioned bottom material is obtained into degradable plastic masterbatch, then master batch is set using squeezing out in Twin screw extruder
In injection molding machine, environment-friendly degradable plastics of the present invention are obtained using high temperature dwell pressure injection.
The pressure of step (1) the high temperature high-pressure stirring mixing is 25-30MPa, and temperature is 80-100 DEG C, mixing time
For 40-50min；The quality that deionized water is added in the step (2) is the 4- of plant fiber, graft starch and calcium oxide mixing
5 times with frequency are 40KHz, power density 0.8W/cm2Under the conditions of ultrasonic homogeneous 5-8min；Heating is stirred in the step (3)
The temperature mixed is 80-100 DEG C, mixing time 15-20min, continues to stir the complete time as 30-35min；The step (4)
The temperature of high temperature pressure maintaining injection molding is 120-130 DEG C, pressure 60MPa, injection speed 40cm3/s。
Embodiment 3:
A kind of environment-friendly degradable plastics, the environment-friendly degradable plastics are made of raw material from the following weight: polylactide
45 parts, 13 parts of poly butylene succinate, 6 parts of polyvinyl chloride, 7 parts of plant fiber, 35 parts of graft starch, 2 parts of calcium oxide, oligomerization
2 parts of sugar, 1.5 parts of polyaluminium chloride, 1.2 parts of sodium bismuthate, 0.6 part of dispersing agent, 0.3 part of crosslinking agent, increases 1.3 parts of nano silica
1.1 parts of agent of modeling.
Wherein, the dispersing agent is the mixture of barium stearate, polyethylene wax and polyethylene glycol mass ratio 2: 1: 1；It is described
Crosslinking agent is di-isopropylbenzene hydroperoxide；The plasticizer is di-n-octyl phthalate.
The preparation methods of the environment-friendly degradable plastics the following steps are included:
(1) it after high temperature and pressure is stirred after mixing polylactide, poly butylene succinate and polyvinyl chloride, obtains mixed
It is spare to close base-material；
(2) will after plant fiber, graft starch and calcium oxide mixed grinding be added deionized water carry out high-speed stirred, then plus
Enter oligosaccharide and be placed in ultrasonic vibration instrument to carry out concussion homogeneous, it is spare to obtain mixed slurry；
(3) dispersing agent, nano silica, polyaluminium chloride, sodium bismuthate is added in above-mentioned mixed resin and mixes heating stirring
Mixed slurry and crosslinking agent and plasticizer in step (2) are added afterwards, it is spare to obtain bottom material after continuing to stir completely；
(4) above-mentioned bottom material is obtained into degradable plastic masterbatch, then master batch is set using squeezing out in Twin screw extruder
In injection molding machine, environment-friendly degradable plastics of the present invention are obtained using high temperature dwell pressure injection.
The pressure of step (1) the high temperature high-pressure stirring mixing is 25-30MPa, and temperature is 80-100 DEG C, mixing time
For 40-50min；The quality that deionized water is added in the step (2) is the 4- of plant fiber, graft starch and calcium oxide mixing
5 times with frequency are 40KHz, power density 0.8W/cm2Under the conditions of ultrasonic homogeneous 5-8min；Heating is stirred in the step (3)
The temperature mixed is 80-100 DEG C, mixing time 15-20min, continues to stir the complete time as 30-35min；The step (4)
The temperature of high temperature pressure maintaining injection molding is 120-130 DEG C, pressure 60MPa, injection speed 40cm3/s。
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of environment-friendly degradable plastics, which is characterized in that the environment-friendly degradable plastics are made of raw material from the following weight:
40-50 parts of polylactide, 12-14 parts of poly butylene succinate, 4-8 parts of polyvinyl chloride, 4-10 parts of plant fiber, graft starch
30-40 parts, 1-3 parts of calcium oxide, 1-3 parts of oligosaccharide, 1-1.6 parts of nano silica, 1-2 parts of polyaluminium chloride, sodium bismuthate 0.6-
1.6 parts, 0.4-0.8 parts of dispersing agent, 0.2-0.5 parts of crosslinking agent, 1-1.2 parts of plasticizer.
2. a kind of environment-friendly degradable plastics according to claim 1, which is characterized in that the environment-friendly degradable plastics by with
The raw material of lower parts by weight is made: 45 parts of polylactide, 13 parts of poly butylene succinate, 6 parts of polyvinyl chloride, 7 parts of plant fiber,
35 parts of graft starch, 2 parts of calcium oxide, 2 parts of oligosaccharide, 1.3 parts of nano silica, 1.5 parts of polyaluminium chloride, 1.2 parts of sodium bismuthate,
0.6 part of dispersing agent, 0.3 part of crosslinking agent, 1.1 parts of plasticizer.
3. a kind of environment-friendly degradable plastics according to claim 1, it is characterised in that: the dispersing agent be barium stearate,
The mixture of polyethylene wax and polyethylene glycol mass ratio 2: 1: 1.
4. a kind of environment-friendly degradable plastics according to claim 1, it is characterised in that: the crosslinking agent is that peroxidating two is different
Propyl benzene, benzoyl peroxide, di-tert-butyl peroxide, any one in di-isopropylbenzene hydroperoxide.
5. a kind of environment-friendly degradable plastics according to claim 1, it is characterised in that: the plasticizer is phthalic acid
Di-n-octyl, BBP(Butyl Benzyl Phthalate, di-sec-octyl phthalate, any one in dicyclohexyl phthalate.
6. a kind of preparation method of environment-friendly degradable plastics, it is characterised in that: the preparation method packet of the environment-friendly degradable plastics
Include following steps:
(1) after high temperature and pressure is stirred after mixing polylactide, poly butylene succinate and polyvinyl chloride, mixed base is obtained
Expect spare；
(2) deionized water will be added after plant fiber, graft starch and calcium oxide mixed grinding and carries out high-speed stirred, add widow
Glycan, which is placed in ultrasonic vibration instrument, carries out concussion homogeneous, and it is spare to obtain mixed slurry；
(3) above-mentioned mixed resin is added after dispersing agent, nano silica, polyaluminium chloride, sodium bismuthate mix heating stirring and is added
Enter the mixed slurry and crosslinking agent and plasticizer in step (2), it is spare to obtain bottom material after continuing to stir completely；
(4) above-mentioned bottom material is obtained into degradable plastic masterbatch, then master batch is placed in note using squeezing out in Twin screw extruder
In molding machine, environment-friendly degradable plastics of the present invention are obtained using high temperature dwell pressure injection.
7. a kind of preparation method of environment-friendly degradable plastics according to claim 6, it is characterised in that: the step (1)
The pressure of high temperature high-pressure stirring mixing is 25-30MPa, and temperature is 80-100 DEG C, mixing time 40-50min.
8. a kind of preparation method of environment-friendly degradable plastics according to claim 6, it is characterised in that: the step (2)
The middle quality that deionized water is added is 4-5 times of plant fiber, graft starch and calcium oxide mixing, and with frequency is 40KHz, function
Rate density is 0.8W/cm2Under the conditions of ultrasonic homogeneous 5-8min.
9. a kind of preparation method of environment-friendly degradable plastics according to claim 6, it is characterised in that: the step (3)
The temperature of middle heating stirring is 80-100 DEG C, mixing time 15-20min, continues to stir the complete time as 30-35min.
10. a kind of preparation method of environment-friendly degradable plastics according to claim 6, it is characterised in that: the step (4)
The temperature of high temperature pressure maintaining injection molding is 120-130 DEG C, pressure 60MPa, injection speed 40cm3/s。
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| CN112940433A (en) * | 2021-03-31 | 2021-06-11 | 东燊新材料科技(深圳)有限公司 | Environment-friendly degradable plastic material and preparation method thereof |
| CN114276585A (en) * | 2022-02-14 | 2022-04-05 | 天津农学院 | Degradable plastic and preparation method thereof |
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