CN105273279A - Composition containing modified high density polyethylene for hollow blow molding products - Google Patents
Composition containing modified high density polyethylene for hollow blow molding products Download PDFInfo
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- CN105273279A CN105273279A CN201410359982.3A CN201410359982A CN105273279A CN 105273279 A CN105273279 A CN 105273279A CN 201410359982 A CN201410359982 A CN 201410359982A CN 105273279 A CN105273279 A CN 105273279A
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Abstract
The invention relates to the field of a high polymer material processing and modification, and especially relates to a composition containing modified high density polyethylene for hollow blow molding products. The composition comprises the following components in percentages by weight: 60-89% of high density polyethylene, 10-20% of linear low density polyethylene, 0-15% of nanometer calcium carbonate and 1-5% of liquid paraffin. The preparation method comprises the following steps: (1) polypropylene granules and various needed additives are weighed according to the weight percentages of the raw materials, the raw materials are added into a high speed mixer for 3-10 times of high speed stirring, wherein 8-10 minutes each time; (2) temperature of a double screw extruder is set at 160-210 DEG C, batches of mixed materials are added into the double screw extruder for fusion and plasticization. The prepared composition does not reduce other mechanical performances of the system, and greatly improves notch impact strength of the material.
Description
Technical field
The present invention relates to processing of high molecular material and modification field, particularly a kind of composition of the modification high-density polyethylene for Blow Molded Articles.
Background technology
High density polyethylene(HDPE) (HDPE) is high, the nonpolar thermoplastic resin of a kind of degree of crystallinity, has tasteless, nontoxic, odorless, excellent thermotolerance and winter hardiness.Under normal temperature condition, be dissolved in any organic solvent hardly, resistant to many acid, alkali, salt, water-absorbent and water vapour permeability low, the features such as easy-formation processing, have become and have extruded hollow blow molding method and produce one of main raw of hollow plastic barrel.But high density polyethylene(HDPE) exists bad to the barrier of oxygen, carbonic acid gas and hydrocarbons, and the shortcoming such as self-cleaning is poor, and environmental stress crack resistance is poor, and low temperature impact properties is bad.
Linear low density polyethylene (LLDPE) is structurally different from general Low Density Polyethylene, because there is not long-chain branch.LLDPE be applied to all traditional cities of polyethylene often enhance anti-to stretch, penetration, shock resistance and anti tear performance.The environmental stress crack resistance of its excellence, low-temperature impact resistance and resistance to warping make LLDPE all attractive to the application of tubing, sheet material extrusion molding and all moldings.
Be applied to based on HDPE the defect existed in hollow blow molding process, modification carried out to it and just seems particularly urgent and important.LLDPE can make up the defect in HDPE application in the advantage that some aspect of performances exist, add nano-calcium carbonate (CaCO in both co-mixing systems simultaneously
3), while not reducing other mechanical properties of system, can significantly improve its notched Izod impact strength.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide a kind of preparation technology of composition of the modification high-density polyethylene for Blow Molded Articles.The high-density polyethylene composition utilizing the present invention to prepare overcomes the bad shortcoming of environmental stress crack resistance difference, notch shock performance, can be used for producing hollow blow molding product.
To achieve these goals, the technical solution used in the present invention is:
The composition of the modification high-density polyethylene for Blow Molded Articles of the present invention, the components based on weight percentage comprised is calculated as follows:
High density polyethylene(HDPE): 60 ~ 89%
Linear low density polyethylene: 10 ~ 20%
Nano-calcium carbonate: 0 ~ 15%
Whiteruss: 1 ~ 5%
Above-mentioned high density polyethylene(HDPE) is a kind of opaque white color wax material, and fusing point is 142 DEG C, and decomposition temperature is 300 DEG C, and density is 0.941g/cm
3.
Above-mentioned linear low density polyethylene is nontoxic, tasteless, odorless, and be creamy white particle.
Above-mentioned nano-calcium carbonate is white powder, and particle diameter is between 1 ~ 100nm, and specific surface area is 15 ~ 20g/m
2.
Above-mentioned whiteruss is a kind of transparent liquid of colorless and odorless, and its boiling point is at 300 ~ 500 DEG C, and flash-point is 230 DEG C, and density is 0.84 ~ 0.89g/cm
3.
The composition of the modification high-density polyethylene for Blow Molded Articles of the present invention, its operation steps is as follows:
(1) raw material mixing: polypropylene granules and various required additive are taken by the weight percent of constitutive material, then adds high-speed mixer high speed and stir 3 ~ 10 times, each 8 ~ 10 minutes.
(2) melting mixing: setting twin screw extruder temperature is 160 ~ 210 DEG C, and the material mixed is added fusion plastification in twin screw extruder in batches.
Compared with prior art, the invention has the beneficial effects as follows: the present invention improves the not stress cracking resistance of HDPE by the method for blending and modifying, in co-mixing system, add Nano-meter CaCO3 simultaneously
3, when not reducing other mechanical properties of system, significantly improve the notched Izod impact strength of material.
Embodiment
Technical scheme is further illustrated below in conjunction with specific embodiment.
Embodiment 1:
For the composition of the modification high-density polyethylene of Blow Molded Articles, each constituent mass percentage ratio proportioning is as shown in table 1.
| Material name | Weight percent |
| HDPE | 82.0 |
| LLDPE | 15.0 |
| Nano-meter CaCO3 3 | 0 |
| Whiteruss | 3.0 |
The composition of the modification high-density polyethylene for Blow Molded Articles of the present embodiment, its preparation method is as follows:
Weigh up by the raw material dosage per-cent described in table 1, then high-speed mixer high speed stirs 3 ~ 10 times, each 8 ~ 10 minutes.Setting twin screw extruder temperature is 160 ~ 210 DEG C, and the material mixed is added fusion plastification in twin screw extruder in batches.
The composition detected result of the modification high-density polyethylene for Blow Molded Articles of the present embodiment is as shown in table 5.
Embodiment 2:
For the composition of the modification high-density polyethylene of Blow Molded Articles, each constituent mass percentage ratio proportioning is as shown in table 2.
| Material name | Weight percent |
| HDPE | 77.0 |
| LLDPE | 15.0 |
| Nano-meter CaCO3 3 | 5.0 |
| Whiteruss | 3.0 |
The composition of the modification high-density polyethylene for Blow Molded Articles of the present embodiment, its preparation method is as embodiment 1:
The composition detected result of the modification high-density polyethylene for Blow Molded Articles of the present embodiment is as shown in table 5.
Embodiment 3:
For the composition of the modification high-density polyethylene of Blow Molded Articles, each constituent mass percentage ratio proportioning is as shown in table 3.
| Material name | Weight percent |
| HDPE | 72.0 |
| LLDPE | 15.0 |
| Nano-meter CaCO3 3 | 10.0 |
| Whiteruss | 3.0 |
The composition of the modification high-density polyethylene for Blow Molded Articles of the present embodiment, its preparation method is as embodiment 1:
The composition detected result of the modification high-density polyethylene for Blow Molded Articles of the present embodiment is as shown in table 5.
Embodiment 4:
For the composition of the modification high-density polyethylene of Blow Molded Articles, each constituent mass percentage ratio proportioning is as shown in table 4.
| Material name | Weight percent |
| HDPE | 67.0 |
| LLDPE | 15.0 |
| Nano-meter CaCO3 3 | 15.0 |
| Whiteruss | 3.0 |
The composition of the modification high-density polyethylene for Blow Molded Articles of the present embodiment, its preparation method is as embodiment 1:
The composition detected result of the modification high-density polyethylene for Blow Molded Articles of the present embodiment is as shown in table 5.
| Performance index | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Tensile strength (23 DEG C/MPa) | 28.0 | 27.5 | 27.1 | 26.7 |
| Elongation at break (%) | 300 | 410 | 450 | 500 |
| Notched Izod impact strength (KJ/m 2) | 27.2 | 29.6 | 30.8 | 32.1 |
| Resisting environmental stress and cracking (F 50/h) | 653 | 674 | 695 | 703 |
| Heat-drawn wire (DEG C) | 65 | 67 | 64 | 66 |
Claims (6)
1. for a composition for the modification high-density polyethylene of Blow Molded Articles, it is characterized in that, its each components based on weight percentage is calculated as follows:
High density polyethylene(HDPE) (HDPE): 60 ~ 89%
Linear low density polyethylene (LLDPE): 10 ~ 20%
Nano-calcium carbonate (CaCO
3): 0 ~ 15%
Whiteruss: 1 ~ 5%.
2. the composition of the modification high-density polyethylene for Blow Molded Articles according to claim 1, it is characterized in that, described high density polyethylene(HDPE) (HDPE) is a kind of opaque white color wax material, and fusing point is 142 DEG C, decomposition temperature is 300 DEG C, and density is 0.941g/cm
3.
3. the composition of the modification high-density polyethylene for Blow Molded Articles according to claim 1, is characterized in that, described linear low density polyethylene (LLDPE) is nontoxic, tasteless, odorless, and be creamy white particle.
4. the composition of the modification high-density polyethylene for Blow Molded Articles according to claim 1, is characterized in that, described nano-calcium carbonate (CaCO
3) be white powder, particle diameter is between 1 ~ 100nm, and specific surface area is 15 ~ 20g/m
2.
5. the composition of the modification high-density polyethylene for Blow Molded Articles according to claim 1, it is characterized in that, described whiteruss is a kind of transparent liquid of colorless and odorless, and its boiling point is at 300 ~ 500 DEG C, flash-point is 230 DEG C, and density is 0.84 ~ 0.89g/cm
3.
6. the composition of the modification high-density polyethylene for Blow Molded Articles according to claim 1, is characterized in that, comprise the steps:
(1) raw material mixing: polypropylene granules and various required additive are taken by the weight percent of constitutive material, then adds high-speed mixer high speed and stir 3 ~ 10 times, each 8 ~ 10 minutes.
(2) fusion plastification: setting twin screw extruder temperature is 160 ~ 210 DEG C, and the material mixed is added fusion plastification in twin screw extruder in batches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359982.3A CN105273279A (en) | 2014-07-25 | 2014-07-25 | Composition containing modified high density polyethylene for hollow blow molding products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359982.3A CN105273279A (en) | 2014-07-25 | 2014-07-25 | Composition containing modified high density polyethylene for hollow blow molding products |
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| Publication Number | Publication Date |
|---|---|
| CN105273279A true CN105273279A (en) | 2016-01-27 |
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|---|---|---|---|
| CN201410359982.3A Pending CN105273279A (en) | 2014-07-25 | 2014-07-25 | Composition containing modified high density polyethylene for hollow blow molding products |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384089A (en) * | 2018-02-09 | 2018-08-10 | 江苏理工学院 | A kind of modification high-density polyethylene material and preparation method thereof |
| CN108948493A (en) * | 2018-07-19 | 2018-12-07 | 青岛威东科高分子材料有限公司 | Steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material and preparation method thereof |
| CN110423396A (en) * | 2019-08-28 | 2019-11-08 | 武汉环岛塑胶包装有限责任公司 | A kind of extrusion-blow molding product and preparation method thereof |
-
2014
- 2014-07-25 CN CN201410359982.3A patent/CN105273279A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384089A (en) * | 2018-02-09 | 2018-08-10 | 江苏理工学院 | A kind of modification high-density polyethylene material and preparation method thereof |
| CN108384089B (en) * | 2018-02-09 | 2020-10-30 | 江苏理工学院 | Modified high-density polyethylene material and preparation method thereof |
| CN108948493A (en) * | 2018-07-19 | 2018-12-07 | 青岛威东科高分子材料有限公司 | Steel pipe ultralow temperature high density polyethylene (HDPE) anti-corrosion material and preparation method thereof |
| CN108948493B (en) * | 2018-07-19 | 2021-04-13 | 青岛威东科高分子材料有限公司 | Ultralow-temperature high-density polyethylene anticorrosive material for steel pipeline and preparation method thereof |
| CN110423396A (en) * | 2019-08-28 | 2019-11-08 | 武汉环岛塑胶包装有限责任公司 | A kind of extrusion-blow molding product and preparation method thereof |
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Application publication date: 20160127 |
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| WD01 | Invention patent application deemed withdrawn after publication |