CN104558794A - High-transparency low-density polyethylene composition and preparation method of composition - Google Patents
High-transparency low-density polyethylene composition and preparation method of composition Download PDFInfo
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- CN104558794A CN104558794A CN201410734367.6A CN201410734367A CN104558794A CN 104558794 A CN104558794 A CN 104558794A CN 201410734367 A CN201410734367 A CN 201410734367A CN 104558794 A CN104558794 A CN 104558794A
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- density polyethylene
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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
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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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
The invention discloses a high-transparency low-density polyethylene composition. The high-transparency low-density polyethylene composition is prepared from the following raw materials in parts by weight: 80-85 parts of linear low-density polyethylene, 15-19 parts of low-density polyethylene, 0.03-0.05 part of zinc stearate, 0.02-0.04 part of silicon dioxide, 0.05-0.08 part of p-phenylenediamine and 10-20 parts of calcium carbonate. According to the composition, calcium carbonate, zinc stearate, linear low-density polyethylene and low-density polyethylene are added into the composition and are interacted according to the ratio, so that the prepared material is high in transparency and high in strength and flexibility, and can be used for preparing composite package films with excellent integrated performance; the phenomenon that the material is easily scratched and punctured by external force in the using process because of the defect of the performance such as brittleness can be avoided. The preparation method is simple and liable to operate; meanwhile, the product cost is reduced.
Description
Technical field
The present invention relates to a kind of polyethylene composition and preparation method thereof, particularly a kind of high tranparency and low density polyethylene and preparation method thereof.
Background technology
Polyethylene (polyethylene is called for short PE) is that ethene is through being polymerized obtained a kind of thermoplastic resin.Industrially, the multipolymer of ethene and a small amount of alpha-olefin is also comprised.Polyethylene odorless, nontoxic, feel ceraceous, have excellent resistance to low temperature (minimum use temperature can reach-100 ~-70 DEG C), chemical stability is good, the erosion (the not resistance to acid with oxidizing property) of the most of soda acid of ability.Be insoluble to common solvent under normal temperature, water-absorbent is little, and electrical insulating property is excellent.
Low Density Polyethylene (Low Density Polyethylene, LDPE) is commonly called as high-pressure polyethylene, and low-molecular-weight is generally colourless, odorless, tasteless, nontoxic liquid.The sterling of high molecular is oyster white waxy solid powder.Because density is lower, material is the softest, is mainly used in polythene bag, film for agricultural use etc.
Linear low density polyethylene (Linear low density polyethylene, LLDPE) is milky white granules that is nontoxic, tasteless, odorless, and density is 0.918 ~ 0.935g/cm
3.It is compared with LDPE, has higher softening temperature and melt temperature, has the advantages such as intensity is large, good toughness, rigidity are large, heat-resisting, winter hardiness is good, also has good environmental stress crack resistance, the performance such as impact strength, tear-resistant intensity.And can acid-and base-resisting, organic solvent etc.
Along with the fast development of China's packing business, more and more higher to the requirement of transparent packaging material, thus cause the heavy demand to high transparency numerical value.In order to adapt to market, increasing Low Density Polyethylene occupation rate, continuing a kind of preparation method of high-clarity Low Density Polyethylene.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of high tranparency and low density polyethylene composition and preparation method thereof, thus overcome the not high shortcoming of advanced polyethylene transparency.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of high tranparency and low density polyethylene composition, following component raw material is comprised: 80 ~ 85 parts of linear low density polyethylenes according to portion rate, 15 ~ 19 parts of Low Density Polyethylenes, 0.03 ~ 0.05 part of Zinic stearas, 0.02 ~ 0.04 part of silicon-dioxide, 0.05 ~ 0.08 part of Ursol D, 10 ~ 20 parts of calcium carbonate.
Wherein, described calcium carbonate is density 2.60 ~ 2.75g/cm
3water-ground limestone.
The poly preparation method of a kind of high tranparency and low density is: get required each component raw material, mix and blend, keep temperature to be 160 ~ 170 DEG C of vacuum granulations.
Wherein, mixing temperature is 30 ~ 40 DEG C, and mixing speed is 900 ~ 1000 r/min, stirs 3 ~ 5min.
Compared with prior art, the present invention has following beneficial effect:
The present invention utilizes the proportioning of adding in the composition between calcium carbonate, Zinic stearas and linear low density polyethylene, Low Density Polyethylene to interact, make obtained material except having high-clarity, also there is good intensity, snappiness, can be used for the composite package film preparing high comprehensive performance, avoid in use because the performance deficiencies such as material fragility are easily scratched by external force, the phenomenon such as to be punctured.Preparation method of the present invention is simple and direct easy to operate, reduces product cost simultaneously.
Embodiment
Below the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Embodiment 1
In units of g, take required each component raw material 80g linear low density polyethylene, 15g Low Density Polyethylene, 0.03g Zinic stearas, 0.02g silicon-dioxide, 0.05g Ursol D, 10g density is 2.75g/cm
3water-ground limestone.Then each component raw material be uniformly mixed at 30 DEG C, mixing speed is 900 r/min, stirs 5min.Adopt twin screw extruder granulation, in granulation process, keep temperature to be 160 DEG C, vacuum tightness is that namely 0.2 ~ 0.5MPa obtains high tranparency and low density polyethylene.
Embodiment 2
In units of g, take required each component raw material 85g linear low density polyethylene, 19g Low Density Polyethylene, 0.05g Zinic stearas, 0.04g silicon-dioxide, 0.08g Ursol D, 20g density is 2.60, g/cm
3water-ground limestone.Then each component raw material existed, be uniformly mixed at 40 DEG C, mixing speed is 1000 r/min, stirs 3min.Adopt twin screw extruder granulation, in granulation process, keep temperature to be 170 DEG C, vacuum tightness is that namely 0.2 ~ 0.5MPa obtains high tranparency and low density polyethylene.
Embodiment 3
In units of g, take required each component raw material 83g linear low density polyethylene, 17g Low Density Polyethylene, 0.04g Zinic stearas, 0.03g silicon-dioxide, 0.06g Ursol D, 15g density is 2.65g/cm
3water-ground limestone.Then each component raw material be uniformly mixed at 30 ~ 40 DEG C, mixing speed is 950r/min, stirs 4min.Adopt twin screw extruder granulation, in granulation process, keep temperature to be 165 DEG C, vacuum tightness is that namely 0.2 ~ 0.5MPa obtains high tranparency and low density polyethylene.
The present invention utilizes the proportioning of adding in the composition between calcium carbonate, Zinic stearas and linear low density polyethylene, Low Density Polyethylene to interact, make obtained material except having high-clarity, also there is good intensity, snappiness, can be used for the composite package film preparing high comprehensive performance, avoid in use because the performance deficiencies such as material fragility are easily scratched by external force, the phenomenon such as to be punctured.Preparation method of the present invention is simple and direct easy to operate, reduces product cost simultaneously.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (4)
1. a high tranparency and low density polyethylene composition, it is characterized in that, following component raw material is comprised: 80 ~ 85 parts of linear low density polyethylenes according to portion rate, 15 ~ 19 parts of Low Density Polyethylenes, 0.03 ~ 0.05 part of Zinic stearas, 0.02 ~ 0.04 part of silicon-dioxide, 0.05 ~ 0.08 part of Ursol D, 10 ~ 20 parts of calcium carbonate.
2. high tranparency and low density polyethylene composition according to claim 1, is characterized in that: described calcium carbonate is density 2.60 ~ 2.75g/cm
3water-ground limestone.
3. the poly preparation method of high tranparency and low density as claimed in claim 1 is characterized in that: get required each component raw material, mix and blend, keep temperature to be 160 ~ 170 DEG C of vacuum granulations.
4. preparation method according to claim 3, it is characterized in that: mixing temperature is 30 ~ 40 DEG C, mixing speed is 900 ~ 1000r/min, stirs 3 ~ 5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410734367.6A CN104558794A (en) | 2014-12-04 | 2014-12-04 | High-transparency low-density polyethylene composition and preparation method of composition |
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| CN201410734367.6A CN104558794A (en) | 2014-12-04 | 2014-12-04 | High-transparency low-density polyethylene composition and preparation method of composition |
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| CN104558794A true CN104558794A (en) | 2015-04-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789317A (en) * | 2004-12-17 | 2006-06-21 | 上海三成化工有限公司 | Antibacterial, ventilating, waterproof plastic granular materials for membrane and manufacturing method thereof |
| CN101747548A (en) * | 2008-12-16 | 2010-06-23 | 金发科技股份有限公司 | Compound for preparation of high-strength polyolefin permeable membrane and preparation method thereof |
| CN102336940A (en) * | 2011-07-20 | 2012-02-01 | 金发科技股份有限公司 | Composition of air-permeable film with low permeation volume and preparation method thereof |
| CN102731919A (en) * | 2012-07-16 | 2012-10-17 | 江苏达胜高聚物有限公司 | High-speed-extruding oil-proof wear-resisting irradiation crosslinking rubber material and preparation method thereof |
| CN103160007A (en) * | 2011-12-16 | 2013-06-19 | 深圳建彩科技发展有限公司 | Polyolefin breathable masterbatch, and preparation method thereof |
-
2014
- 2014-12-04 CN CN201410734367.6A patent/CN104558794A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789317A (en) * | 2004-12-17 | 2006-06-21 | 上海三成化工有限公司 | Antibacterial, ventilating, waterproof plastic granular materials for membrane and manufacturing method thereof |
| CN101747548A (en) * | 2008-12-16 | 2010-06-23 | 金发科技股份有限公司 | Compound for preparation of high-strength polyolefin permeable membrane and preparation method thereof |
| CN102336940A (en) * | 2011-07-20 | 2012-02-01 | 金发科技股份有限公司 | Composition of air-permeable film with low permeation volume and preparation method thereof |
| CN103160007A (en) * | 2011-12-16 | 2013-06-19 | 深圳建彩科技发展有限公司 | Polyolefin breathable masterbatch, and preparation method thereof |
| CN102731919A (en) * | 2012-07-16 | 2012-10-17 | 江苏达胜高聚物有限公司 | High-speed-extruding oil-proof wear-resisting irradiation crosslinking rubber material and preparation method thereof |
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Application publication date: 20150429 |