CN101092508A - Method for preparing low bending strength nylon 6 / polyethylene alloy - Google Patents
Method for preparing low bending strength nylon 6 / polyethylene alloy Download PDFInfo
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- CN101092508A CN101092508A CN 200710024634 CN200710024634A CN101092508A CN 101092508 A CN101092508 A CN 101092508A CN 200710024634 CN200710024634 CN 200710024634 CN 200710024634 A CN200710024634 A CN 200710024634A CN 101092508 A CN101092508 A CN 101092508A
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Abstract
This invention discloses a method for preparing PA6/PE alloy material with low bending strength. The method comprises: adding a toughening agent to conventional PA6/PE alloy material, extruding by a screw extruder, and granulating. The toughening agent is valerolactam, epsilon-caprolactam, decalactam, laurolactam or their mixture. The PA6/PE alloy material is composed of: PA6 60-80 wt. %, PE 5-20 wt. %, unsaturated carboxylic acid-grafted PE 5-20 wt. %, and toughening agent 2-15 wt. %.
Description
Technical field
The present invention relates to polymeric material field, particularly low bending strength nylon 6/ polyethylene (PA6/PE) alloy increases gentle preparation method.
Technical background
The nylon material that low bending strength has high tensile simultaneously has the purposes of many occasions, and general nylon 6/ polyethylene alloy can not satisfy this requirement.CN1321702 polyethylene/nylon blend separation material
The present invention relates to a kind ofly has the high molecule alloy material polyethylene/nylon blend separation material of excellent barrier properties to organic solvent, and this material is by polyethylene, nylon and the nylon grafted is ethane-ethenol copolymer commixed forms.Described material is a vessel prepd through slush molding, can form parallel to each other, overlapped lamelliform nylon discontinuous phase in its wall of container, organic solvent there is fabulous barriering effect, can be widely used in fields such as fuel tank of vehicle, pesticides packaging, paint packing, cosmetic package.
High-impact polystyrene/the nylon 6 of the anti-chlorine of CN1357566, fluoroethane intercepts the preparation method of sheet material
High-impact polystyrene/the nylon 6 that the invention belongs to anti-chlorine, fluoroethane intercepts the preparation method of sheet material, and its barrier layer is made up of the HIPS resin of HIPS, SBS, nylon 6, maleic anhydride graft, a spot of oxidation inhibitor ky-7910 and antioxidant 264 etc.In composite sheet extrusion moulding process, barrier resins is gone on die lip, die lip under the base plate resin, and the temperature in die lip temperature and screw rod head district is controlled at 235 ℃, and resulting composite sheet has excellent mechanical property and intercepts the performance of HCFC-141b.
CN1970630 nylon/ethane-ethenol copolymer commixed type lamination barrier material and preparation method thereof, the barriering effect that has solved the lamination barrier material existence that exists in the prior art is undesirable, the problem that range of application is narrow.Form by the following raw materials by weight percent cooperation: nylon 65～95%, ethylene-vinyl alcohol copolymer 5～35%, and the superoxide of nylon and ethylene-vinyl alcohol copolymer gross weight 0.2～3%.The gained material has also improved the barrier property of nylon to organic solvent in impelling strength that has improved original nylon and tensile strength.
In the production of high-pressure and hydraulic sebific duct, need a kind of high temperature resistantly as domestic certain foreign capital affiliate, enough tensile strengths are arranged, than low bending strength, but not only submissive but also tough and tensile rolling plug.Adopt PA12 material (fracture tensile strength 40Mpa, flexural strength 20Mpa) always, but cost an arm and a leg.Be the meter that reduces cost, once used the PA6/PE alloy, elastomer toughened nylon replaces.Though find the PA6/PE alloy have higher draw tensile strength (general 〉=50Mpa), flexural strength also high (〉=50Mpa), kindliness is poor.Elastomer toughened nylon 6, flexural strength can meet the demands＜25Mpa, but tensile strength reduces＜20Mpa the tenacity deficiency significantly.Both all can not satisfy service requirements.
Summary of the invention
The objective of the invention is to the PA6/PE alloy is improved, reduce its flexural strength in basic the maintenance significantly in its fracture tensile strength, but in particular for satisfying employed rolling plug of high-pressure and hydraulic sebific duct or analogous products technical requirements aborning.
Purpose of the present invention is finished by following technical solution.The preparation method of low bending strength (increasing gentle) nylon 6/ polyethylene (PA6/PE) alloy adds a class lactam compound as flexibilizing agent when preparation PA6/PE alloy.Mixture is through the screw extrusion press extruding pelletization.
Described flexibilizing agent is a Valerolactim, ε-Ji Neixianan, lactan simplification compound or two to four kinds of mixtures such as caprinolactam or laurolactam.
The weight percent of the interpolation composition material of flexibilizing agent is:
Nylon 6 (PA6) 60-80%
Polyethylene (PE) 5-20%
Unsaturated carboxylic acid graft PE 5-20%
Flexibilizing agent 2-15%
The solution solvent viscosity ratio of PA6 is 2.3-3.0.
PE adopts general HDPE, LDPE, and LLDPE and composition thereof all can.
The used unsaturated carboxylic acid of unsaturated carboxylic acid graft PE is a vinylformic acid, MALEIC ANHYDRIDE, and used PE can be HDPE, LDPE, LLDPE and composition thereof.
The process for making of low bending strength PA6/PE alloy of the present invention is:
PA6 was dried 3-4 hour in 90-100 ℃ vacuum drying oven.Again will be through the dry PA6 of metering, PE stirred 2-3 minute in unsaturated carboxylic acid graft PE and the flexibility agent adding high speed blender.Change extruding pelletization in the double-screw extruding pelletizing machine over to.The temperature of forcing machine is set at: 220 ℃ 245 ℃ 245 ℃ 245 ℃ 230 ℃ 220 ℃ 220 ℃ 220 ℃, and 235 ℃ of die heads.
The present invention has reduced the flexural strength of PA6/PE alloy significantly in the tensile strength of basic maintenance PA6/PE alloy, make material not only submissive but also tough and tensile, but alternative PA12 is used for making the rolling nylon plug that the high-pressure and hydraulic sebific duct is produced, and cost reduces significantly.
Following embodiment further specifies of the present invention, rather than limits the scope of the invention.Below amount (part) is weight, fracture tensile strength 53-58MPa, and flexural strength obviously reduces.
Table 1: prescription is formed
Table 2: measuring mechanical property result
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative Examples 1 | |
| Fracture tensile strength MPa | 55.8 | 56.7 | 54.9 | 59.9 |
| Flexural strength MPa | 51.2 | 25.7 | 28.1 | 68 |
| Socle girder breach thrust KJ/m 2 | 36.8 | 75.4 | 78.5 | 18.6 |
Table 3: prescription is formed
Table 4: measuring mechanical property result
| Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | |
| Fracture tensile strength MPa | 53.2 | 46.6 | 32.1 | 42.4 |
| Flexural strength MPa | 42.3 | 43.4 | 22.3 | 16.2 |
| Socle girder breach thrust KJ/m 2 | 44.3 | 24.1 | 86.6 | 107.2 |
Table 5: prescription is formed
Table 6: measuring mechanical property result
| Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | |
| Fracture tensile strength MPa | 55.8 | 53.2 | 57.4 | 52.9 |
| Flexural strength MPa | 51.2 | 27.5 | 26.3 | 24.3 |
| Socle girder breach thrust KJ/m 2 | 36.4 | 76.2 | 81.3 | 96.5 |
Claims (6)
1. the preparation method of a low bending strength PA6/PE alloy is characterized in that adding flexibilizing agent in the PA6/PE alloy, i.e. lactam compound.
2. the preparation method of low bending strength PA6/PE alloy according to claim 1 is characterized in that flexibilizing agent is a Valerolactim, ε-Ji Neixianan, caprinolactam, lactam compound or its mixtures such as laurolactam.
3. the preparation method of low bending strength PA6/PE alloy as claimed in claim 1 is characterized in that the weight percent of composition material is:
Nylon 6 (PA6) 60-80%
Polyethylene (PE) 5-20%
Unsaturated carboxylic acid graft PE 5-20%
Flexibilizing agent 2-15%.
4. the preparation method of low bending strength PA6/PE alloy as claimed in claim 1, the solution solvent viscosity ratio that it is characterized in that PA6 is 2.3-3.0.
5. the preparation method of low bending strength PA6/PE alloy as claimed in claim 1 is characterized in that PE is HDPE, LDPE, LLDPE or its mixture.
6. the preparation method of low bending strength PA6/PE alloy as claimed in claim 1 is characterized in that the used unsaturated carboxylic acid of unsaturated carboxylic acid graft PE is a vinylformic acid, MALEIC ANHYDRIDE, used PE can be HDPE, LDPE, LLDPE or its mixture are through the screw extrusion press extruding pelletization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100246340A CN100487054C (en) | 2007-06-26 | 2007-06-26 | Method for preparing low bending strength nylon 6 / polyethylene alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100246340A CN100487054C (en) | 2007-06-26 | 2007-06-26 | Method for preparing low bending strength nylon 6 / polyethylene alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092508A true CN101092508A (en) | 2007-12-26 |
| CN100487054C CN100487054C (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100246340A Active CN100487054C (en) | 2007-06-26 | 2007-06-26 | Method for preparing low bending strength nylon 6 / polyethylene alloy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831170A (en) * | 2010-05-07 | 2010-09-15 | 深圳市科聚新材料有限公司 | High viscosity PA6/PE alloy and preparation method thereof |
| CN101220182B (en) * | 2008-02-02 | 2010-11-24 | 中国人民解放军军事医学科学院卫生装备研究所 | Linear low density polyethylene/nylon 6 alloy for rotational molding |
| CN103509334A (en) * | 2013-07-24 | 2014-01-15 | 桐城运城制版有限公司 | Preparation method of food package material |
| CN117362798A (en) * | 2023-10-16 | 2024-01-09 | 山东蓝海晶体科技有限公司 | Preparation method of degradable plastic mixed particles |
-
2007
- 2007-06-26 CN CNB2007100246340A patent/CN100487054C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220182B (en) * | 2008-02-02 | 2010-11-24 | 中国人民解放军军事医学科学院卫生装备研究所 | Linear low density polyethylene/nylon 6 alloy for rotational molding |
| CN101831170A (en) * | 2010-05-07 | 2010-09-15 | 深圳市科聚新材料有限公司 | High viscosity PA6/PE alloy and preparation method thereof |
| CN101831170B (en) * | 2010-05-07 | 2012-11-14 | 深圳市科聚新材料有限公司 | High viscosity PA6/PE alloy and preparation method thereof |
| CN103509334A (en) * | 2013-07-24 | 2014-01-15 | 桐城运城制版有限公司 | Preparation method of food package material |
| CN117362798A (en) * | 2023-10-16 | 2024-01-09 | 山东蓝海晶体科技有限公司 | Preparation method of degradable plastic mixed particles |
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| Publication number | Publication date |
|---|---|
| CN100487054C (en) | 2009-05-13 |
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