CN106496647B - A kind of high biological carbon content master batch and its processing technology - Google Patents

A kind of high biological carbon content master batch and its processing technology Download PDF

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CN106496647B
CN106496647B CN201610927122.4A CN201610927122A CN106496647B CN 106496647 B CN106496647 B CN 106496647B CN 201610927122 A CN201610927122 A CN 201610927122A CN 106496647 B CN106496647 B CN 106496647B
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biological
coupling agent
carbon content
mass percent
starch
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CN106496647A (en
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孙元正
张剑锋
詹豪
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Zhejiang Huafa Ecological Sci & Tech Co Ltd
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Zhejiang Huafa Ecological Sci & Tech Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02Starch; Degradation products thereof, e.g. dextrin
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/06Biodegradable
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • 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 relates to a kind of high biological carbon content master batch and its processing technologys, belong to the technical field of compositions of high-molecular compound.By starch, biological polyethylene, coupling agent, biological plasticizer (epoxy aliphatic acid methyl ester, the epoxy plasticizer being process by waste grease i.e. soybean acidified oil), lubricant, antioxidant and degradant additive constitute, in above-mentioned each component, starch quality percentage is 35-50%, biological polyethylene mass percent is 30-40%, coupling agent mass percent is 1.8-8%, and biological plasticizer mass percent is 7-20%, remaining is lubricant, antioxidant, degradant additive.Invention is applied to the processing of the degradative plastics such as polybag, has many advantages, such as that biological carbon content is high, degradability is good.

Description

A kind of high biological carbon content master batch and its processing technology
Technical field
The present invention relates to a kind of high biological carbon content master batch and its processing technologys, belong to the composition skill of high-molecular compound Art field.
Background technique
Known degradation plastic material, because containing the polyolefin compositions such as polyethylene, polypropylene, so that degrading not after discarded Thoroughly, " white pollution " problem is not completely resolved, and a large amount of plastic garbage causes very big pressure to environment in life.And Although some high polymers such as polyethylene belongs to high biotic component substance, but it cannot achieve biodegrade, how make high polymer simultaneous Tool biodegrade and high biological carbon content, are technical problems to be solved in this application.
Based on this, the application is made.
Summary of the invention
For drawbacks described above present in existing degradation plastic product, the application provides a kind of with high charcoal first The master batch of content.
To achieve the above object, the technical solution that the application takes is as follows:
A kind of high biological carbon content master batch, by starch, biological polyethylene, coupling agent, biological plasticizer (epoxyfatty acid first Ester is the epoxy plasticizer being process by waste grease i.e. soybean acidified oil), lubricant, antioxidant and degradant additive structure At in above-mentioned each component, starch quality percentage is 35-50%, and biological polyethylene mass percent is 30-40%, coupling agent Mass percent is 1.8-8%, and biological plasticizer mass percent is 7-20%, remaining is lubricant, antioxidant, degrades and add Agent.
Further, as preferred:
The biological carbon content of the biological carbon content master batch of the height is not less than 65%.In master batch composition, starch and biology Polyethylene is main composition component, and the two belongs to biotic component, and summation has been effectively ensured charcoal and has contained 60% or more Amount.
The coupling agent is titanate coupling agent and one kind of aluminate coupling agent or combinations thereof, coupling agent be master batch at One key factor of type, in the formation of high biological carbon content master batch, coupling agent connect starch with biological polyethylene segment And extend, be conducive to the processing performance for improving master batch, and when coupling agent selects the one of titanate coupling agent and aluminate coupling agent When kind or combinations thereof, filler is activated, to improve loading, is reduced amount of resin, is reduced goods cost, change simultaneously Kind processing performance, increases product gloss, improves quality, provide good promotion condition, and thermal stability for chain growth Well, not blistering when blown film, filler is easily dispersed, good mechanical property, and can reduce composite material melt viscosity, improves processability Can, mechanical wear is reduced, productivity is improved;Composite material thermal stability, surface smoothness, dimensional stability can be improved;It can mention High filler loading capacity reduces amount of resin, reduces cost.
The lubricant selects any one or more combinations of monoglyceride, stearic acid, polyethylene wax, and lubricant has Conducive to improve processing performance, by increase material greasy property, realize enhancing gelation degree, improve plastic products toughness and The effect of surface flatness.It is furthermore preferred that the mass percent of the lubricant is 1-8%.
The antioxidant selects three [2,4- di-tert-butyl-phenyl] phosphite esters, four [β-(3,5- di-t-butyl -4- hydroxyls Base phenyl) propionic acid] any one or more of combination of pentaerythritol ester, it is old for a long time that antioxidant can be effectively prevented compound Thermal oxidative degradation during change, while efficient processing stabilization is also acted as, improve compound under the conditions of high temperature process Discoloration-resistant.It is furthermore preferred that the antioxidant mass percent is 0.01-1%.
In the application, it is the necessary factor of chain growth that coupling agent, which is the chain growth promotion ingredient of starch and biological polyethylene, Therefore, in master batch composition, the compatibility of starch, biological polyethylene and coupling agent and selection are very crucial;Antioxidant, biology plasticising Agent and lubricant are then used as molding auxiliary agent, effectively improve and improve its molding effect.
It, first will be high meanwhile present invention also provides a kind of processing technology of high biological carbon content master batch as characterized above When mixed hot pot temperature rises to 100-120 DEG C, starch and coupling agent are placed in high mixed hot pot, opened under 2000-3000rpm revolving speed Close observation material admixture, the color of material, vapor volatilization situation and object are wanted in dynamic stirring in the high-speed agitating process Material rotates in pot, and situation of rolling, when temperature of charge rises to 85-95 DEG C, the moisture content in starch starts to evaporate, and material is viscous Degree increases, when control flow powers on flow index and is gradually increasing, it is necessary to switch to stir at low speed, so that it is guaranteed that in the Undec premise of raw material Lower completion dehumidifying;Continue to add the materials such as biological polyethylene and antioxidant into the mixed hot pot of height, revolving speed is reduced and adjusted to 700- 2000rpm is stirred and is fused, while keeping a close eye on material operating condition, prevents material because of frictional heat generation, and temperature is anxious Speed increases, and material melts, and is sticked in pot, stirring slurry locking;Material is transferred to cold pot, material Temperature fall, adds under room temperature Enter biological plasticizer, after handling the 15-20min time under 300-400rpm revolving speed, melt blending, extrusion molding.
Further, as preferred:
When the dehumidifying finishes, material water ratio control hereinafter, starch is the basic ingredient of master batch, contains 1.5% Water rate will have a direct impact on subsequent chain growth, mixture homogeneity and extrusion molding effect, starch and be premixed with coupling agent It closes, dehumidifying controls material water ratio 1.5% hereinafter, starch integrally white uniform graininess, and starch and coupling Agent is in undecomposed state, neither influences its function and effect, and is conducive to the addition of biological polyethylene, it is ensured that starch, biology Polyethylene is mixed with the abundant, uniform of coupling agent, avoid because humidity it is excessively high caused by agglomeration, when biological polyethylene, antioxidant It after addition, under high-speed rotation, stirs, fuse with starch, coupling agent, form graininess.
Detailed description of the invention
Fig. 1 is the schematic diagram of the process of the application.
Specific embodiment
Embodiment 1-12: the processing of different material proportion master batch
The high biological carbon content master batch production of the present embodiment is by ingredient, raw material premix, dehumidifying, heat are mixed, cold mixed and squeeze out, cold But, molding, test package and etc. composition, detailed process be described as follows:
1. ingredient: ingredient is as shown in table 1.
1 list of ingredients of table (unit, %<mass percent>)
Wherein, edible corn starch (food-grade (Grade A), Binzhou Jin Hui corn development corporation, Ltd.) can be selected in starch Or edible corn starch (food-grade (Grade A), Xingmao Corn Development Co., Ltd., Zhucheng);Biological polyethylene selects gm9450f Slh218 Stn7006 (Brazilian (Braskem) Blasco company);Three stearic acid isopropyl titanate (models can be selected in coupling agent NDZ-130, NanJing Shuguang Chemical Group Co., Ltd.) or three stearic acid isopropyl titanates compound (model NDZ-131, south Capital dawn Chemical Group Co., Ltd);Biological plasticizer selects environment-friendly plasticizer JD86, and (it is limited that the scientific and technological share of Australia's environmental protection is praised in Zhejiang Company) or triethyl citrate lm-07 (Jiangsu Leimeng Chemical Industry Science and Technology Co., Ltd);Polyethylene wax can be selected in lubricant (ceralene 6801, Dongguan City Han Wei Science and Technology Co., Ltd.), monoglyceride (Zhejiang Wu Mei Biotechnology Co., Ltd) or Stearic acid (Zhejiang Wu Mei Biotechnology Co., Ltd);Antioxidant (Irganox 1010, the Guangzhou jade of the He family can be selected in antioxidant Work Materials Co., Ltd) or antioxidant (Irgafos 168, Guangzhou jade of the He family chemical materials Co., Ltd);Degradant additive can Select d2w oxidation-type biodegrade additive (winter section's degradative plastics product (Shanghai) Co., Ltd.) or TDPATMAuxiliary agent oxidation-type Degradant additive (EPI environmental protection technology Co., Ltd).
Operator strictly presses material number and recipe requirements ingredient, and answered according to the requirement of " production task list " It looks into.
2. raw material premix, dehumidifying: the starch matched as required, coupling agent etc. are poured into high mixed hot pot.The mixed hot pot temperature of height When reaching 110 DEG C of set temperature, the first low rate start under 700rpm revolving speed, stirring to the moisture content of material exists after starch is added 1.5% hereinafter, and raw material must be kept not decompose, material at white uniformity granulated.
3. high speed heat is mixed: continuing into pot plus the other materials such as biological polyethylene resin, biological plasticizer, starting high speed are revolved Turn button, makes material high-speed cruising under 2500rpm revolving speed in pot, stir, fuse, become graininess, work as material When temperature rises to 85-95 DEG C, the moisture content in starch starts to evaporate, and material viscosity increases, and control flow powers on flow index gradually When rising, at this point, it is cold mixed to be transferred to low speed.
4. low speed is cold mixed: treated material being relayed into cold pot, biological plasticizer is added, and is natural at room temperature It is cooling, revolving speed is controlled in cooling procedure as 300-400rpm, after the cold mixed processing 15-20min of low speed, going to next process makes With.
5. melt blending, extrusion, molding: first feeding quantitatively inputs, material squeeze conveying after fusion plastification, vacuum evacuation, Mixing compression, then melt conveying to extrusion device is measured and is squeezed out, it is extruded into master batch, by blown film printing and bag making, Gao Sheng is made The polybag of object carbon content.
The equipment used in above-mentioned operation:
Step 2., 3. in height mix hot pot and step 4. in cold pot be starch degradation material specialized high-speed mixing machine Group, model KRL2*300/1000, manufacturer are machine-building Co., Ltd, Nanjing Dingtian.
Step 5. in melt blending, extrusion molding use starch degradation material special twin screw extruding pelletization unit, type Number be D75/48-1300, manufacturer be machine-building Co., Ltd, Nanjing Dingtian;Blown film printing and bag making is thin using degrading Film blows print production line and degradative plastics bag making machine etc., model SJ55 × 32-1100, and manufacturer is that Shanghai modeling edge electromechanics is set Standby Co., Ltd.
It is fixed test to the biological carbon content (i.e. biology base) in the biological plastics of above-mentioned preparation with ASTM D6866, surveys Test result ginseng is shown in Table 1.
End properties test summary sheet under the different implementation states of table 2
Biological carbon content, % Tensile strength, MPa Degradation rate, % (80day)
Embodiment 1 64.53 20 40
Embodiment 2 69.77 22.2 43
Embodiment 3 74.86 24.4 45
Embodiment 4 69.85 22.3 48
Embodiment 5 74.93 24.5 53
Embodiment 6 79.72 26.7 58
Embodiment 7 74.97 24.8 60
Embodiment 8 79.77 27.1 62
Embodiment 9 84.88 29.8 64
Embodiment 10 79.89 27.7 65
Embodiment 11 84.92 30.2 68
Embodiment 12 89.81 32 70
It can be seen from Table 2 that in process, biological carbon content is mostly derived from starch and biological polyethylene, with The two summation is incremented by, and biological carbon content also gradually increases, and ignores the error in process, biological carbon content substantially with the two Summation maintain an equal level;In process, by tetra- groups of embodiment 1-3, embodiment 4-6, embodiment 7-9, embodiment 10-12 groups The comparison of data can be seen that biological polyethylene content is higher, then tensile strength is better, corresponding film poly-bag tensile strength with The incremental of biological polyethylene content is gradually increased, and film poly-bag tensile strength is in 20-32MPa;And embodiment 1-3, embodiment 4-6, The comparison of data between tetra- groups of embodiment 7-9, embodiment 10-12 groups is as can be seen that being incremented by with content of starch, and degradation is increasingly Fastly, degradation rate is 40-70% (being subject to 80 days);By table 1 and table 2 compare can be seen that when biological carbon content between 60-90%, tensile strength and degradation rate can reach preferably, especially when the sum of starch and the additive amount of biological polyethylene are situated between When between 70-85%, the mutual compatibility between each material, tensile strength, degradation rate are in optimum state.
Comparative example 1: the influence of coupling agent, antioxidant, degradant additive
3 list of ingredients of table (unit, %<mass percent>)
End properties test summary sheet under the different implementation states of table 4
When the sum of starch and the additive amount of biological polyethylene are too low, in conjunction with comparative example 1-5, starch and biological polyethylene The sum of additive amount is lower than 60%, and charcoal loss is more in process, and biological carbon content is relatively low, and biology plasticising in material Agent, coupling agent equal size are higher, although degradation rate is not low, materiel machining mouldability is bad, and corresponding tensile strength is relatively low; And when the sum of starch and the additive amount of biological polyethylene are excessively high, in conjunction with comparative example 11 and comparative example 12, although biological carbon content It is higher, but because part of auxiliary such as lubricant, antioxidant can not add, the overall performance of material is bad, and same starch and biology are poly- Under ethylene pitch-based sphere, the tensile strength of comparative example 11 and comparative example 12 does not increase instead, and the addition of its degradant additive It measures higher, is just able to satisfy the demand of degradation;3,5,7 and comparative example 6-8 is not the case where adding degradant additive in conjunction with the embodiments Under, although biological carbon content and tensile strength can meet demand, degradation almost cannot achieve.

Claims (1)

1. a kind of processing technology of high biological carbon content master batch, it is characterised in that:
The high biological carbon content master batch is by starch, biological polyethylene, coupling agent, biological plasticizer, lubricant, antioxidant and drop It solves additive to constitute, in above-mentioned each component, starch quality percentage is 35-50%, and biological polyethylene mass percent is 30- 40%, coupling agent mass percent be 1.8-8%, biological plasticizer mass percent be 7-20%, remaining for lubricant, antioxidant, Degradant additive;The coupling agent is titanate coupling agent and one kind of aluminate coupling agent or combinations thereof;
Wherein, the biological carbon content of the biological carbon content master batch of the height is not less than 65%;
The lubricant selects any one or more combinations of monoglyceride, stearic acid, polyethylene wax;
The mass percent of the lubricant is 1-8%;
The antioxidant selects three [2,4- di-tert-butyl-phenyl] phosphite esters, four [β-(3,5- di-t-butyl -4- hydroxy benzenes Base) propionic acid] any one or more of combination of pentaerythritol ester;
The antioxidant mass percent is 0.01-1%, and degradant additive mass percent is 0.01-1%;
Steps are as follows:
When the mixed hot pot temperature of height first being risen to 100-120 DEG C, starch and coupling agent are placed in high mixed hot pot, in 2000- Start stirring under 3000rpm revolving speed, close observation material admixture, the color of material, water are wanted in the high-speed agitating process Steam volatilization situation and material rotate in pot, and situation of rolling, when temperature of charge rises to 85-95 DEG C, the moisture content in starch is opened Beginning evaporates, and material viscosity increases, when control flow powers on flow index and is gradually increasing, it is necessary to switch to stir at low speed, so that it is guaranteed that Dehumidifying is completed under the premise of raw material is Undec;Continue to add biological polyethylene and antioxidant material, revolving speed into the mixed hot pot of height It reduces and adjusts to 700-2000rpm, stir and fuse, while keeping a close eye on material operating condition, prevent material Because of frictional heat generation, temperature is rapidly increased, and material melts, and is sticked in pot, stirring slurry locking;Material is transferred to cold pot and biology is added Plasticizer, after stirring simultaneously natural cooling under room temperature, melt blending, extrusion molding;
When the dehumidifying finishes, material water ratio is controlled below 1.5%;
In the natural cooling process, revolving speed 300-400rpm handles time 15-20min.
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Publication number Priority date Publication date Assignee Title
CN106867112A (en) * 2017-03-27 2017-06-20 江苏锦禾高新科技股份有限公司 A kind of straw charcoal plastics rich in charcoal and preparation method thereof
CN109159501A (en) * 2018-08-16 2019-01-08 金国轴 A kind of high biomass content high barrier biology base packing container and preparation method thereof
CN113105726B (en) * 2021-04-06 2023-01-31 贵州省材料产业技术研究院 Preparation method of biodegradable biochar repair membrane material

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CN102504344A (en) * 2011-11-09 2012-06-20 青岛科技大学 Recyclable high-strength biological packaging material
CN105295111A (en) * 2015-10-30 2016-02-03 武汉华丽生物股份有限公司 Total biomass composite injection moulding material and preparation method thereof
CN105585759A (en) * 2015-11-20 2016-05-18 武汉华丽生物股份有限公司 Full-biomass composite plastic and preparing method thereof
US9464188B2 (en) * 2013-08-30 2016-10-11 Kimberly-Clark Worldwide, Inc. Simultaneous plasticization and compatibilization process and compositions

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CN102504344A (en) * 2011-11-09 2012-06-20 青岛科技大学 Recyclable high-strength biological packaging material
US9464188B2 (en) * 2013-08-30 2016-10-11 Kimberly-Clark Worldwide, Inc. Simultaneous plasticization and compatibilization process and compositions
CN105295111A (en) * 2015-10-30 2016-02-03 武汉华丽生物股份有限公司 Total biomass composite injection moulding material and preparation method thereof
CN105585759A (en) * 2015-11-20 2016-05-18 武汉华丽生物股份有限公司 Full-biomass composite plastic and preparing method thereof

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