CN107446219A - A kind of preparation method of lignin plastic composite - Google Patents
A kind of preparation method of lignin plastic composite Download PDFInfo
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- CN107446219A CN107446219A CN201710874525.1A CN201710874525A CN107446219A CN 107446219 A CN107446219 A CN 107446219A CN 201710874525 A CN201710874525 A CN 201710874525A CN 107446219 A CN107446219 A CN 107446219A
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- Prior art keywords
- lignin
- composite
- alkali lignin
- dried
- air
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions 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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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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)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A kind of preparation method of lignin plastic composite, belongs to plastic composite technical field, comprises the following steps：Mixed material is made in the processing of alkali lignin air-flow crushing, addition auxiliary agent, composite filler particles are made in addition calcium carbonate, material is kneaded.The grain diameter that the present invention handles to obtain by air-flow crushing is smaller, and average grain diameter is 3 μm ± 0.1 μm, and alkali lignin grain diameter is smaller, and the tensile strength of composite is bigger.It is favorably improved the mechanical property of composite.The present invention is by adding plastic additive：Dioctyl phthalate, silane coupler and calcium stearate improve the interface compatibility between alkali lignin and polyvinyl resin, improve the lubrication between alkali lignin molecule and polyethylene molecular chain, improve the comprehensive mechanical property of composite.
Description
Technical field
The invention belongs to plastic composite technical field, and in particular to a kind of preparation side of lignin plastic composite
Method.
Background technology
Polyvinyl resin due to it is cheap, performance is good, as the continuous development of technology, polyethylene are excellent with its
Mechanical performance and chemical stability, it is widely used in each sides such as industry, agricultural, medicine, health and daily living article
Face, have become the kind that yield is maximum in plastic resin.In most cases, polyvinyl resin is not single use
, but want mixed filler.Filler, also known as filler, he is for improving the performance of vinyon product, reducing product
Cost, have very significant effect.Due to filler wide material sources, cheap, so being processed in vinyon
In have a wide range of applications.But solving filler and polyvinyl resin compatibility at present, improving the side such as composite materials property
Face need further to improve.
The content of the invention
In order to solve problems of the prior art, do invention and provide a kind of preparation of lignin plastic composite
Method, it is intended that be evenly distributed degree and raising of the compatibility, filler of raising filler and polyvinyl resin in polyvinyl resin
Composite materials property.
In order to solve problems of the prior art, the present invention uses following technical scheme：
A kind of preparation method of lignin plastic composite, comprises the following steps：
Step 1：Weigh alkali lignin 150g to be positioned in container, continuously dried in 80 DEG C, 80bar vacuum drying chamber
Dry 24h, stirs a sample every 12h, is sealed after taking-up standby；
Step 2：Air-flow crushing processing is carried out to the sample, air-flow crushing, control are carried out using BPQ-50 airslide disintegrating mills
Sample preparation product charging rate is 300g/h, and it is 0.6MPa, exit pressure 0.6MPa to crush air inlet pressure；
Step 3：Alkali lignin after crushing is positioned in 80 DEG C of thermostatic drying chamber processing is dried, dry 24h
Afterwards, it is standby to take out sealing；
Step 4：The alkali lignin for weighing dried 20g is laid on surface plate, with rubber head dropper by 7.5g neighbour's benzene two
Formic acid dioctyl ester disperses to be added on alkali lignin dropwise, and adds 3g silane couplers and 3g calcium stearates, after stirring,
Taken out after mixing 1min using mixed at high speed crusher in crushing, 24h is dried in 80 DEG C of thermostatic drying chambers and is taken out, obtains mixture
Material；
Step 5：Mixed material 10g and calcium carbonate 10g is weighed, 200ml water is added, is stirred using magnetic stirring apparatus,
Suspension system is become, suspension is spray-dried, sets vapo(u)rizing temperature as 180 DEG C, outlet temperature is 90 DEG C, spraying
Speed is 6ml/min, obtain composite filler particles, in 80 DEG C of thermostatic drying chambers dry 24h after take out it is standby；
Step 6：Weigh high density polyethylene materials particle 300g to be positioned in container, done in the vacuum of 80 DEG C, 80bar
Continuous drying 24h in dry case, a sample is stirred every 12h, is sealed after taking-up standby；
Step 7：The high density polyethylene materials particle of 80 dry parts by weight is weighed, rubber mixing machine is preheated, when double roller temperature
When reaching 170 DEG C high density polyethylene materials are carried out with refining glue, after 2min, adds its mass percent 20wt% compound filling out
Material particle is kneaded, and after being kneaded 10min, obtains composite.
Preferably, the average grain diameter for alkali lignin being obtained after the processing of described step two alkali air-flow crushing is 3 μm ± 0.1 μm.
Preferably, the rubber mixing machine described in step 7 is the open refining glue molding machines of X (S) K.
The beneficial effects of the present invention are:
1) grain diameter that the present invention handles to obtain by air-flow crushing is smaller, and average grain diameter is 3 μm ± 0.1 μm, alkali wood
Quality grain diameter is smaller, and the tensile strength of composite is bigger.It is favorably improved the mechanical property of composite
2) present invention is by adding plastic additive：Dioctyl phthalate, silane coupler and calcium stearate improve
Interface compatibility between alkali lignin and polyvinyl resin, improve the lubrication between alkali lignin molecule and polyethylene molecular chain
Effect, improve the comprehensive mechanical property of composite.
3) organic modifier of the lignin as calcium carbonate, the compatibility of calcium carbonate and base polyethylene can be improved；And
Calcium carbonate can prevent the reunion of lignin in mixing process, promote lignin in the base scattered.In a word, lignin and
The effect of synergistic reinforcement is shown when calcium carbonate is as filler, and lignin can improve the power of calcium carbonate in the composite
Performance is learned, there is modification to calcium carbonate.
Embodiment
Below by the description to embodiment, the present invention is further detailed explanation, to help people in the art
Member has more complete, accurate and deep understanding to inventive concept of the invention, technical scheme.
Embodiment 1
A kind of preparation method of lignin plastic composite, comprises the following steps：
Step 1：Weigh alkali lignin 150g to be positioned in container, continuously dried in 80 DEG C, 80bar vacuum drying chamber
Dry 24h, stirs a sample every 12h, is sealed after taking-up standby；
Step 2：Air-flow crushing processing is carried out to the sample, air-flow crushing, control are carried out using BPQ-50 airslide disintegrating mills
Sample preparation product charging rate is 300g/h, and it is 0.6MPa, exit pressure 0.6MPa to crush air inlet pressure；
Step 3：Alkali lignin after crushing is positioned in 80 DEG C of thermostatic drying chamber processing is dried, dry 24h
Afterwards, it is standby to take out sealing；
Step 4：The alkali lignin for weighing dried 20g is laid on surface plate, with rubber head dropper by 7.5g neighbour's benzene two
Formic acid dioctyl ester disperses to be added on alkali lignin dropwise, and adds 3g silane couplers and 3g calcium stearates, after stirring,
Taken out after mixing 1min using mixed at high speed crusher in crushing, 24h is dried in 80 DEG C of thermostatic drying chambers and is taken out, obtains mixture
Material；
Step 5：Mixed material 10g and calcium carbonate 10g is weighed, 200ml water is added, is stirred using magnetic stirring apparatus,
Suspension system is become, suspension is spray-dried, sets vapo(u)rizing temperature as 180 DEG C, outlet temperature is 90 DEG C, spraying
Speed is 6ml/min, obtain composite filler particles, in 80 DEG C of thermostatic drying chambers dry 24h after take out it is standby；
Step 6：Weigh high density polyethylene materials particle 300g to be positioned in container, done in the vacuum of 80 DEG C, 80bar
Continuous drying 24h in dry case, a sample is stirred every 12h, is sealed after taking-up standby；
Step 7：The high density polyethylene materials particle of 80 dry parts by weight is weighed, rubber mixing machine is preheated, when double roller temperature
When reaching 170 DEG C high density polyethylene materials are carried out with refining glue, after 2min, adds its mass percent 20wt% compound filling out
Material particle is kneaded, and after being kneaded 10min, obtains composite.
The average grain diameter that alkali lignin is obtained after described step two alkali air-flow crushing processing is 3 μm ± 0.1 μm.
Rubber mixing machine described in step 7 is the open refining glue molding machines of X (S) K.
Claims (3)
1. a kind of preparation method of lignin plastic composite, it is characterised in that comprise the following steps：
Step 1：Weigh alkali lignin 150g to be positioned in container, the continuous drying in 80 DEG C, 80bar vacuum drying chamber
24h, a sample is stirred every 12h, is sealed after taking-up standby；
Step 2：Air-flow crushing processing is carried out to the sample, air-flow crushing is carried out using BPQ-50 airslide disintegrating mills, controls sample
Product charging rate is 300g/h, and it is 0.6MPa, exit pressure 0.6MPa to crush air inlet pressure；
Step 3：Alkali lignin after crushing is positioned in 80 DEG C of thermostatic drying chamber processing is dried, after drying 24h,
It is standby to take out sealing；
Step 4：The alkali lignin for weighing dried 20g is laid on surface plate, with rubber head dropper by 7.5g phthalic acids
Dioctyl ester disperses to be added on alkali lignin dropwise, and adds 3g silane couplers and 3g calcium stearates, after stirring, utilizes
Taken out after mixed at high speed crusher in crushing mixing 1min, 24h is dried in 80 DEG C of thermostatic drying chambers and is taken out, obtains mixed material；
Step 5：Mixed material 10g and calcium carbonate 10g is weighed, 200ml water is added, is stirred, made into using magnetic stirring apparatus
For suspension system, suspension is spray-dried, sets vapo(u)rizing temperature as 180 DEG C, outlet temperature is 90 DEG C, spray velocity
For 6ml/min, obtain composite filler particles, dried in 80 DEG C of thermostatic drying chambers take out after 24h it is standby；
Step 6：Weigh high density polyethylene materials particle 300g to be positioned in container, in 80 DEG C, 80bar vacuum drying chamber
Middle continuous drying 24h, a sample is stirred every 12h, is sealed after taking-up standby；
Step 7：The high density polyethylene materials particle of 80 dry parts by weight is weighed, rubber mixing machine is preheated, when double roller temperature reaches
Refining glue is carried out to high density polyethylene materials at 170 DEG C, after 2min, adds its mass percent 20wt% compounded mix
Grain is kneaded, and after being kneaded 10min, obtains composite.
A kind of 2. preparation method of lignin plastic composite according to claim 1, it is characterised in that：Described step
The average grain diameter that alkali lignin is obtained after rapid two alkali air-flow crushing processing is 3 μm ± 0.1 μm.
A kind of 3. preparation method of lignin plastic composite according to claim 1, it is characterised in that：In step 7
Described rubber mixing machine is the open refining glue molding machines of X (S) K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710874525.1A CN107446219A (en) | 2017-09-25 | 2017-09-25 | A kind of preparation method of lignin plastic composite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710874525.1A CN107446219A (en) | 2017-09-25 | 2017-09-25 | A kind of preparation method of lignin plastic composite |
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| CN107446219A true CN107446219A (en) | 2017-12-08 |
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| CN201710874525.1A Pending CN107446219A (en) | 2017-09-25 | 2017-09-25 | A kind of preparation method of lignin plastic composite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503862A (en) * | 2018-03-05 | 2018-09-07 | 南京工业大学 | A kind of preparation method of ultra micro lignin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387677A (en) * | 2013-07-19 | 2013-11-13 | 济南圣泉集团股份有限公司 | Preparation methods of lignin rubber additive and tyre rubber |
| CN103467759A (en) * | 2013-07-17 | 2013-12-25 | 东北林业大学 | Preparation method of industrial alkali lignin/polyvinyl alcohol cross-linked thin film |
| CN104031315A (en) * | 2014-06-06 | 2014-09-10 | 浙江农林大学 | Environment-friendly halogen-free intumescent flame retardant polypropylene-based lignin composite material |
| CN104163977A (en) * | 2014-07-09 | 2014-11-26 | 华南理工大学 | Red lignin/polyolefin composite material and preparation method thereof |
-
2017
- 2017-09-25 CN CN201710874525.1A patent/CN107446219A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467759A (en) * | 2013-07-17 | 2013-12-25 | 东北林业大学 | Preparation method of industrial alkali lignin/polyvinyl alcohol cross-linked thin film |
| CN103387677A (en) * | 2013-07-19 | 2013-11-13 | 济南圣泉集团股份有限公司 | Preparation methods of lignin rubber additive and tyre rubber |
| CN104031315A (en) * | 2014-06-06 | 2014-09-10 | 浙江农林大学 | Environment-friendly halogen-free intumescent flame retardant polypropylene-based lignin composite material |
| CN104163977A (en) * | 2014-07-09 | 2014-11-26 | 华南理工大学 | Red lignin/polyolefin composite material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108503862A (en) * | 2018-03-05 | 2018-09-07 | 南京工业大学 | A kind of preparation method of ultra micro lignin |
| CN108503862B (en) * | 2018-03-05 | 2020-10-02 | 南京工业大学 | Preparation method of ultramicro lignin |
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Application publication date: 20171208 |