CN108976731A - A kind of preparation method of polylactic acid opaque straw - Google Patents
A kind of preparation method of polylactic acid opaque straw Download PDFInfo
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- CN108976731A CN108976731A CN201810520063.8A CN201810520063A CN108976731A CN 108976731 A CN108976731 A CN 108976731A CN 201810520063 A CN201810520063 A CN 201810520063A CN 108976731 A CN108976731 A CN 108976731A
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- pla
- suction pipe
- polylactic acid
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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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)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of preparation method of polylactic acid opaque straw, PLA 94-96.5%, PEO 2-3%, ParaloidParaloidKM-355P 1-2%,PLA, is first added in double screw extruder by 0.4-0.8%, EBS 0.1-0.2%, then by PEO, ParaloidKM-355P,
Description
Technical field
The present invention relates to technical field of macromolecules, in particular to a kind of preparation method of polylactic acid opaque straw.
Background technique
Previous suction pipe is all non-biodegradable PP class suction pipe, and white pollution is generated after discarded, destroys ecological environment,
Accelerate with rhythm of life, fast service restaurant industry latest developments are rapid, and one-time consumption product dosage rapidly rises, and suction pipe is as daily primary
The property consumer goods, dosage are increasing.Mainly using polypropylene as main material, traditional polypropylene pipet does not have previous suction pipe
Biodegradability can generate white pollution, influence ecological environment after use.PLA is passed through using cornstarch as primary raw material
Biodegradated polymer materal obtained from series of physicochemical reaction not only has biological degradability, also has natural bacteriostatic function
Energy.Currently, PLA has been widely used for film class product, injection molding class product, plastic uptake class product, polylactic acid suction pipe and bendable suction pipe
There is not been reported for pertinent literature and patent.The present invention is intended to provide material and the preparation side of a kind of transparent polylactic acid bendable suction pipe
Method.
Summary of the invention
It is existing to solve technical problem to be solved by the invention is to provide a kind of preparation method of polylactic acid opaque straw
Caused above-mentioned defects in technology.
To achieve the above object, the present invention provides a kind of technical solution below: preparation method of polylactic acid opaque straw,
Each component and ratio are as follows: PLA 94-96.5%, PEO 2-3%, ParaloidKM-355P1-2%,25250.4-
0.8%, EBS 0.1-0.2%, specific production stage are as follows:
PLA is first added in double screw extruder by the first step according to the ratio prepared in advance from main spout, then will
PEO、ParaloidKM-355P、2525, EBS is added in double screw extruder from side spout, is squeezed out, tie rod,
It is cooling, it is dry, obtain that modified PLA suction pipe is resin dedicated, and wherein the draw ratio of double screw extruder is 52:1, barrel after slice
160 DEG C of temperature, 165 DEG C of die head temperature；
Resin dedicated be added in straw manufacture unit of the PLA suction pipe of obtained modification is squeezed out, is led by second step
Draw, cool down, cutting to obtain transparent polylactic acid straight tube, wherein straw manufacture unit screw slenderness ratio is 30:1, barrel temperature
It is 160 DEG C, die head installs Melt Pump additional, and 165 DEG C of die head temperature, cooling water temperature is 40-50 DEG C；
Transparent polylactic acid straight tube obtained in second step is put into full-automatic bendable suction pipe molding machine and is obtained by third step
PLA high transparency bendable suction pipe.
It is using the beneficial effect of above technical scheme: a kind of preparation method of polylactic acid opaque straw of the invention, it is excellent
The polyethylene oxide and ParaloidKM-355P for selecting a small amount of particular molecule amount increase the toughness and machinability of PLA resin,
The high transparency for maintaining PLA resin keeps PLA suction pipe resilience obtained good, and light transmittance is greater than 90%, preferably2525 dosages and special PLA suction pipe moulding process improve PLA suction pipe and squeeze out stability, it is straight to stabilize PLA suction pipe
Diameter, obtained PLA suction pipe internal-and external diameter deviation provide a kind of preparation method of the PLA suction pipe of high transparency within 0.02mm,
PLA application field has been expanded, can replace traditional PP suction pipe, it is possible to reduce white pollution, since PLA is natural bacteriostatic material
Material, advantageous human health.
Specific embodiment
The preferred embodiment of the present invention.
Embodiment 1
By the PLA of 94 parts by weight, the polyethylene oxide of 3 parts by weight, the ParaloidKM-355P of 2 parts by weight, 0.8 weight
Part2525,0.2 parts by weight EBS are added high speed mixer and mix 3min with 200r/min high, and mixed material is added
Draw ratio is that extrusion, tie rod, cooling, slice obtain the dedicated modified resin of PLA suction pipe, twin-screw in the double screw extruder of 52:1
Extruder barrel temperature is 160 DEG C, 165 DEG C of die head temperature；The dedicated modified resin investment straw of PLA suction pipe is manufactured into unit
It squeezes out, sizing, traction, cooling, cut to obtain transparent polylactic acid straight tube, wherein suction pipe manufacture unit screw slenderness ratio is 30:1,
Barrel temperature is 160 DEG C, and die head installs Melt Pump additional, and 165 DEG C of die head temperature, cooling water temperature is maintained within the scope of 40-50 DEG C, will
Obtained transparent polylactic acid straight tube is put into the PLA high transparency bendable suction pipe that full-automatic bendable suction pipe molding machine obtains, wherein suction pipe
Inside and outside diameter deviation is within 0.02mm, and the success rate that straight tube is converted into bend pipe is 99.95%, and wall thickness is that the suction pipe of 0.15mm is saturating
Light rate is 90%.
Embodiment 2
By the PLA of 96.5 parts by weight, the polyethylene oxide of 2 parts by weight, the ParaloidKM-355P of 1 parts by weight, 0.4 weight
Measure part2525,0.1 parts by weight EBS are added high speed mixer and mix 3min with 200r/min high, and mixed material is added
Enter extrusion, tie rod, cooling, slice in the double screw extruder that draw ratio is 52:1 and obtain the dedicated modified resin of PLA suction pipe, squeezes out
Machine barrel temperature is 160 DEG C, 165 DEG C of die head temperature；The dedicated modified resin investment straw manufacture unit of PLA suction pipe is squeezed
Out, it is formed, draws, is cooling, cutting to obtain transparent polylactic acid straight tube, wherein suction pipe manufacture unit screw slenderness ratio is 30:1, material
Cylinder temperature is 160 DEG C, and die head installs Melt Pump additional, and 165 DEG C of die head temperature, cooling water temperature is maintained within the scope of 40-50 DEG C, will
It is put into the PLA high transparency bendable suction pipe that full-automatic bendable suction pipe molding machine obtains to transparent polylactic acid straight tube, wherein suction pipe is inside and outside
Diameter deviation is within 0.02mm, and it is 99.92% that wherein straight tube, which is converted into the success rate of bend pipe, and wall thickness is the suction pipe light transmission of 0.15mm
Rate is 90.5%.
Embodiment 3
By the PLA of 95.4 parts by weight, the polyethylene oxide of 2.5 parts by weight, the ParaloidKM-355P of 1.5 parts by weight,
0.45 parts by weight2525,0.15 parts by weight EBS are added high speed mixer and mix 3min with 200r/min high, will be mixed
Material be added that extrusion in the double screw extruder that draw ratio is 52:1, tie rod, cooling, that slice obtains PLA suction pipe is dedicated modified
Resin, extruder barrel temperature are 160 DEG C, and 165 DEG C of die head temperature, cooling water temperature is maintained within the scope of 40-50 DEG C, by PLA
Suction pipe dedicated modified resin investment straw manufacture unit squeezes out, sizing, traction, it is cooling, cut to obtain transparent polylactic acid it is straight
Pipe, wherein suction pipe manufacture unit screw slenderness ratio is 30:1, and barrel temperature is 160 DEG C, and die head installs Melt Pump, die head temperature additional
165 DEG C, obtained transparent polylactic acid straight tube is put into the PLA high transparency bendable suction pipe that full-automatic bendable suction pipe molding machine obtains,
Wherein the inside and outside diameter deviation of suction pipe is within 0.02mm, and the success rate that straight tube is converted into bend pipe is 99.99%, wall thickness 0.15mm
Suction pipe light transmittance be 90.2%.
Comparative example 1
By the PLA of 94.8 parts by weight, 3 parts of polyethylene oxide, 2 parts of ParaloidKM-355P, 0.2 part of EBS are added high
Fast batch mixer mixes 3min with 200r/min high, and extrusion in the twin-screw that draw ratio is 52:1, tie rod, cold is added in mixed material
But, slice obtains the dedicated modified resin of PLA suction pipe, and extruder barrel temperature is 160 DEG C, 165 DEG C of die head temperature；By PLA suction pipe
PP Pipe Compound investment straw manufacture unit squeezes out, sizing, draws, is cooling, cutting to obtain transparent polylactic acid straight tube, wherein suction pipe
Manufacture unit screw slenderness ratio is 30:1, and barrel temperature is 160 DEG C, and die head installs Melt Pump additional, 165 DEG C of die head temperature, will obtain
Straight tube is put into the PLA high transparency bendable suction pipe that full-automatic bendable suction pipe molding machine obtains, and wherein the inside and outside diameter deviation of suction pipe exists
Within 0.2mm, the success rate that straight tube is converted into bend pipe is 50%, and the suction pipe light transmittance that wall thickness is 0.15mm is 90%, passes through comparison
Example 1 and example 1, it can be deduced that2525 mainly improve the melt strength of resin in system, improve and inhale when squeezing out
The stability of pipe diameter.
Comparative example 2
By the PLA of 99 parts by weight, 0.8 partHigh speed mixer is added with 200r/min high in 2525,0.2 parts of EBS
Mixed material is added extrusion, tie rod, cooling, slice in the double screw extruder that draw ratio is 52:1 and obtains PLA by mixed 3min
The dedicated modified resin of suction pipe, extruder barrel temperature are 160 DEG C, 165 DEG C of die head temperature；PLA suction pipe PP Pipe Compound is put into beverage
Suction pipe manufacture unit squeezes out, sizing, traction, cooling, cuts to obtain transparent polylactic acid straight tube, and wherein suction pipe manufacture unit screw rod is long
Diameter ratio is 30:1, and barrel temperature is 160 DEG C, and die head installs Melt Pump additional, 165 DEG C of die head temperature, will obtain straight tube and is put into automatically
The PLA high transparency bendable suction pipe that bendable suction pipe molding machine obtains, wherein the inside and outside diameter deviation of suction pipe is within 0.02mm, straight tube
Since toughness not enough ruptures when being converted into bend pipe, qualification rate 0, the direct suction light transmittance that wall thickness is 0.15mm is 92%, by right
Ratio 2 and example 1, it can be deduced that polyethylene oxide, ParaloidKM-355P play the role of plasticising, toughening in system, mention
The high toughness and processing performance of resin.
Based on a kind of above-mentioned, the preparation method of polylactic acid opaque straw of structure of the invention, preferably a small amount of particular molecule amount
Polyethylene oxide and ParaloidKM-355P, increase the toughness and machinability of PLA resin, maintain PLA resin
High transparency, keep PLA suction pipe resilience obtained good, light transmittance is greater than 90%, preferably2525 dosages and special
PLA suction pipe moulding process improves PLA suction pipe and squeezes out stability, stabilizes PLA straw diameter, obtained PLA suction pipe internal-and external diameter is inclined
Difference provides a kind of preparation method of the PLA suction pipe of high transparency, has expanded PLA application field, Ke Yidai within 0.02mm
For traditional PP suction pipe, it is possible to reduce white pollution, since PLA is natural bacteriostatic material, advantageous human health, the present invention passes through
The polyethylene oxide of high molecular weight is added in PLA resin, by hydrogen bond action point between polyethylene oxide and PLA resin and
Polyethylene oxide improves the processing performance of PLA to the plasticization of PLA, while acrylic ester impact-resisting modifier is added
ParaloidKM-355P increases the toughness of PLA, adds Germany watt gramMelt when 2525 steady extruding is strong
Degree improves the internal-and external diameter stability of PLA high transparency suction pipe, finally obtains the higher PLA suction pipe of a transparency.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection scope.
Claims (1)
1. a kind of preparation method of polylactic acid opaque straw, each component and parts by weight are as follows: PLA 94-96.5%, PEO 2-3%,
ParaloidParaloidKM-355P 1-2%,0.4-0.8%, EBS0.1-0.2%, specific production step
It is rapid as follows:
PLA is first added in double screw extruder by the first step according to the ratio prepared in advance from main spout, then by PEO,
ParaloidKM-355P、EBS is added in double screw extruder from side spout, is squeezed out, and tie rod is cold
But, dry, obtain that modified PLA suction pipe is resin dedicated, and wherein the draw ratio of double screw extruder is 52:1, barrel temperature after slice
160 DEG C, 165 DEG C of die head temperature of degree；
Second step, by the PLA suction pipe of obtained modification it is resin dedicated be added to straw manufacture unit in squeeze out, traction, it is cold
But, cut to obtain transparent polylactic acid straight tube, wherein straw manufacture unit screw slenderness ratio is 30:1, barrel temperature 160
DEG C, die head installs Melt Pump additional, and 165 DEG C of die head temperature, cooling water temperature is maintained within the scope of 40-50 DEG C；
Transparent polylactic acid straight tube obtained in second step is put into full-automatic bendable suction pipe molding machine and obtains PLA by third step
High transparency bendable suction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810520063.8A CN108976731A (en) | 2018-05-28 | 2018-05-28 | A kind of preparation method of polylactic acid opaque straw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810520063.8A CN108976731A (en) | 2018-05-28 | 2018-05-28 | A kind of preparation method of polylactic acid opaque straw |
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| Publication Number | Publication Date |
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| CN108976731A true CN108976731A (en) | 2018-12-11 |
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| CN201810520063.8A Pending CN108976731A (en) | 2018-05-28 | 2018-05-28 | A kind of preparation method of polylactic acid opaque straw |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111440425A (en) * | 2019-01-16 | 2020-07-24 | 纪腾萦 | Method for preparing high-light-transmittance polylactic acid |
| CN111438910A (en) * | 2019-01-16 | 2020-07-24 | 纪腾萦 | Environment-friendly straw and manufacturing method thereof |
| CN113652066A (en) * | 2021-09-17 | 2021-11-16 | 杭州聚丰新材料有限公司 | Disposable full-biodegradable transparent straw and preparation method thereof |
| CN114103274A (en) * | 2021-10-09 | 2022-03-01 | 杭州同杰诚新材料有限公司 | Biodegradable toughened high-temperature-resistant composite straw |
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| CN101255270A (en) * | 2007-02-27 | 2008-09-03 | 伟盟工业股份有限公司 | Biofragmentable straw and method for manufacturing same |
| JP2011208040A (en) * | 2010-03-30 | 2011-10-20 | Fuji Chemical Kk | Tubular molded product |
| CN104530667A (en) * | 2014-12-08 | 2015-04-22 | 安徽聚美生物科技有限公司 | PLA toughening material, PLA toughening plastic-suction sheet and preparation methods of two |
| CN104725802A (en) * | 2015-03-27 | 2015-06-24 | 北京石油化工学院 | Preparation method of polylactic acid composite material for hot-melt 3D printing |
-
2018
- 2018-05-28 CN CN201810520063.8A patent/CN108976731A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255270A (en) * | 2007-02-27 | 2008-09-03 | 伟盟工业股份有限公司 | Biofragmentable straw and method for manufacturing same |
| JP2011208040A (en) * | 2010-03-30 | 2011-10-20 | Fuji Chemical Kk | Tubular molded product |
| CN104530667A (en) * | 2014-12-08 | 2015-04-22 | 安徽聚美生物科技有限公司 | PLA toughening material, PLA toughening plastic-suction sheet and preparation methods of two |
| CN104725802A (en) * | 2015-03-27 | 2015-06-24 | 北京石油化工学院 | Preparation method of polylactic acid composite material for hot-melt 3D printing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111440425A (en) * | 2019-01-16 | 2020-07-24 | 纪腾萦 | Method for preparing high-light-transmittance polylactic acid |
| CN111438910A (en) * | 2019-01-16 | 2020-07-24 | 纪腾萦 | Environment-friendly straw and manufacturing method thereof |
| CN113652066A (en) * | 2021-09-17 | 2021-11-16 | 杭州聚丰新材料有限公司 | Disposable full-biodegradable transparent straw and preparation method thereof |
| CN114103274A (en) * | 2021-10-09 | 2022-03-01 | 杭州同杰诚新材料有限公司 | Biodegradable toughened high-temperature-resistant composite straw |
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Application publication date: 20181211 |
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