CN1239597C - Permanent self-lubricating polyolefin composition and its prepn - Google Patents
Permanent self-lubricating polyolefin composition and its prepn Download PDFInfo
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- CN1239597C CN1239597C CN 03112921 CN03112921A CN1239597C CN 1239597 C CN1239597 C CN 1239597C CN 03112921 CN03112921 CN 03112921 CN 03112921 A CN03112921 A CN 03112921A CN 1239597 C CN1239597 C CN 1239597C
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- lubricant
- lubricating
- self
- polyolefin
- compatilizer
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Abstract
The present invention relates to a self-lubricating polyolefin compound which has the composition (mass percent) of 85 to 98 % of polyolefin, 0.5 to 13 % of lubricant, and 1.5 to 10.0% of compatilizer, wherein the lubricant is silicone or polytetrafluoroethylene copolymer with high molecular weight. The polyolefin recommends polyethylene and polypropylene, and the silicone or polytetrafluoroethylene copolymer replaces low molecular substances of silicon oil, etc. so that the phenomenon of lubricating agent leakage can be avoided during the use process; simultaneously, the compatilizer is added into the present invention, and the compatibility of the lubricant and the polyolefin can be improved. Limiting surface lubricant or an active reaction monomer can be also added into the compound. The preparation method comprises the following steps that the polyolefin and the lubricant such as high molecular silicone or the polytetrafluoroethylene copolymer are melted and mixed together; the self-lubricating polyolefin compound can be prepared. The problem of the compatibility of the polyolefin and the lubricant during the preparation process can be solved, for example, the volume can be increased by that the compatilizer, the limiting surface lubricant, the active reaction monomer, etc. are added.
Description
Technical field
The present invention relates to a kind of novel material, particularly a kind of permanent self-lubricating polyolefin compositions, and this preparation of compositions method with self-lubricating function.
Background technology
In modern mechanical manufacturing or other a lot of fields, material with self-lubricating function is subjected to increasing attention, adopts after the self-lubricating material, does not need to re-use lubricating oil, not only reduce the workload of machine maintenance, and can avoid the pollution of lubricating oil.Traditional be used for the plastics that material wear-resisting and the self-lubricating field is generally ultra-high molecular weight, for example: polyethylene, polyoxymethylene, nylon etc.As everyone knows, the processing characteristics of ultrahigh molecular weight polyethylene(UHMWPE) is very poor, be difficult for preparation complex structure or large-sized goods, and engineering plastics such as nylon costs an arm and a leg.And some self-lubricating material is as adding the self-lubricating material that silicone oil constitutes in polyolefine.Because silicone oil and polyolefinic consistency are bad, solubility parameter differs greatly, and along with the prolongation of duration of service, lubricants such as silicone oil can progressively ooze out from material internal, up to all oozing out.So this self-lubricating material self-lubricating effect can not keep permanent self-lubricating property worse and worse.
Summary of the invention
The purpose of this invention is to provide a kind of self-lubricating material cheap and easy to get, new self-lubricating material is that general purpose polyolefin and some lubricant are organically combined, the self-lubricating polyolefin compositions of preparing like this can reduce cost when keeping the polyolefine excellent processing characteristics significantly.The lubricity of this self-lubricating material should be permanent, can not weaken with the prolongation of duration of service.The present invention also will provide this preparation of compositions method.Former, the material source of new departure enrich, and are convenient to large-scale promotion and use.
The technical scheme that realizes the foregoing invention task is: a kind of permanent self-lubricating polyolefin compositions, and its composition is (mass percent):
Polyolefine 85～98%
Lubricant 0.5～13%
Compatilizer 1.5～10.0%.
Here said polyolefine can be a polyethylene, polypropylene, and polyvinyl chloride, polystyrene etc. are recommended polyethylene, polypropylene; Lubricant wherein adopts high-molecular weight silicone or polytetrafluoroethyl-ne alkene copolymer.Adopt high molecular weight silicone or polytetrafluoroethyl-ne alkene copolymer to replace silicone oil, lubricated wet goods lower-molecular substance, promptly avoided oozing out (migration) phenomenon at use generation lubricant.Simultaneously, the present invention has added compatilizer, is compatilizer with polyethylene maleic anhydride grafts or the acrylic acid-grafted thing of polypropylene for example, can improve lubricant and polyolefinic consistency, the high molecular lubricant can be scattered in the polyolefin substrate, and the material surface lubricant does not peel off.
The prioritization scheme of said composition is further to increase to promote the polyolefine composition compatible with lubricant, for example can add respectively:
The boundary lubrication agent is an amount of, or adds
The active reaction monomer is an amount of.
Boundary lubrication agent wherein can be adopted calcium stearate or erucicamide.
Can also add:
Initiator is an amount of
Oxidation inhibitor is an amount of
Oxidation inhibitor wherein can be polymkeric substance phenolic antioxidant commonly used.More than said " in right amount " be meant 0.05～0.3%.
Above preparation of compositions method is with polyolefine and lubricant-for example high molecular weight silicone or polytetrafluoroethyl-ne alkene copolymer melt blending, prepares the self-lubricating polyolefin compositions.To solve the compatibility problem of polyolefine and lubricant in the preparation process, as passing through to add increase-volumes on the spot such as compatilizer, boundary lubrication agent, active reaction monomer.
The present invention overcome traditional self-lubricating material processing characteristics very poor, be difficult for preparation complex structure or large-sized goods, cost an arm and a leg, can not keep shortcoming such as permanent self-lubricating property, new permanent self-lubricating polyolefin compositions is cheap, be easy to processing, former, material source enriches, HDPE Silicon core pipe be can be widely used in, continuous, scale operation silicon core pipe are convenient to.
Embodiment
Embodiment 1 (mass percent):
High density polyethylene(HDPE) (HDPE) 90
Polymeric silicone 8
Compatilizer 2
Initiator is an amount of
Oxidation inhibitor is an amount of.
Above preparation of compositions method is with high density polyethylene(HDPE) and polymeric silicone melt blending, prepares the self-lubricating polyolefin compositions.Add compatilizer, initiator, oxidation inhibitor in the preparation process.
The product static friction coefficient of above formulation is reduced to below 0.10 by 0.30 of pure HDPE.
Embodiment 2, polypropylene 85%
Tetrafluoroethylene copolymer 1 3%
Compatilizer 2%.
The preparation method is with polypropylene and high polytetrafluoroethyl-ne alkene copolymer melt blending, prepares the self-lubricating polyolefin compositions, adds compatilizer in the preparation process.
Embodiment 3, polyvinyl chloride 98%
Polymeric silicone 0.5%
Compatilizer 1.5%.
The preparation method is the same.
Embodiment 4, polystyrene 85%
Lubricant 5%
Compatilizer 10.0%
Embodiment 5, and is substantially the same manner as Example 1, but it is an amount of to add the boundary lubrication agent simultaneously.
Embodiment 6, and is substantially the same manner as Example 1, but it is an amount of to add the active reaction monomer simultaneously.
Claims (5)
1, a kind of permanent self-lubricating polyolefin compositions is characterized in that, the mass percent composition is:
Polyolefine 85～98%
Lubricant 0.5～13%
Compatilizer 1.5～10.0%,
Lubricant wherein is high-molecular weight silicone or polytetrafluoroethyl-ne alkene copolymer;
Described compatilizer is polyethylene maleic anhydride grafts or the acrylic acid-grafted thing of polypropylene.
2, according to the described permanent self-lubricating polyolefin compositions of claim 1, it is characterized in that, also be added with:
Boundary lubrication agent 0.05～0.3%, or
Active reaction monomer 0.05～0.3%,
Calcium stearate or erucicamide are adopted in boundary lubrication agent wherein.
3, according to claim 1 or 2 described permanent self-lubricating polyolefin compositionss, it is characterized in that, also be added with:
Initiator 0.05～0.3%
Oxidation inhibitor 0.05～0.3%.
4, the preparation method of a kind of claim 1 or 2 described permanent self-lubricating polyolefin compositionss, its step are with polyolefine and lubricant melt blending, prepare the self-lubricating polyolefin compositions, add compatilizer in the preparation process.
5, according to the preparation method of the described permanent self-lubricating polyolefin compositions of claim 4, it is characterized in that, also will add boundary lubrication agent, the increase-volume on the spot of active reaction monomer in the preparation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112921 CN1239597C (en) | 2003-03-05 | 2003-03-05 | Permanent self-lubricating polyolefin composition and its prepn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112921 CN1239597C (en) | 2003-03-05 | 2003-03-05 | Permanent self-lubricating polyolefin composition and its prepn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1526756A CN1526756A (en) | 2004-09-08 |
| CN1239597C true CN1239597C (en) | 2006-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03112921 Expired - Fee Related CN1239597C (en) | 2003-03-05 | 2003-03-05 | Permanent self-lubricating polyolefin composition and its prepn |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270212B (en) * | 2007-03-22 | 2010-10-20 | 中国石油化工股份有限公司 | Polypropelene composition capable of making with laser and preparation method thereof |
| EP2223962B1 (en) * | 2007-12-07 | 2012-02-29 | Panasonic Corporation | Antifouling polypropylene resin composition, and housing for household electric appliance and toilet seat comprising the same |
| WO2010072592A1 (en) * | 2008-12-22 | 2010-07-01 | Basf Se | Method of improving scratch resistance and related products and uses |
| BR112014031055A2 (en) * | 2012-06-11 | 2017-06-27 | 3M Innovative Properties Co | melt processable compositions having synergist and silicone-containing polymeric processing additive |
| CN103756100A (en) * | 2014-01-22 | 2014-04-30 | 苏州新区特氟龙塑料制品厂 | Teflon plastic film |
| CN106397168A (en) * | 2016-09-06 | 2017-02-15 | 武汉理工大学 | Ultra-lubricating material and preparation method thereof |
| CN109385002A (en) * | 2017-08-09 | 2019-02-26 | 中国石化扬子石油化工有限公司 | A kind of 3D printing self-lubricating polyethylene composition and preparation method thereof |
| CN114407442A (en) * | 2021-12-09 | 2022-04-29 | 浙江邦德管业有限公司 | Low-friction-coefficient silicon core pipe and preparation method thereof |
-
2003
- 2003-03-05 CN CN 03112921 patent/CN1239597C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1526756A (en) | 2004-09-08 |
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Owner name: SINOPEC YANGZI PETROCHEMICAL CO. Free format text: FORMER OWNER: YANGZI PETROCHEMICAL CO., LTD. Effective date: 20080118 |
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Effective date of registration: 20080118 Address after: Dachang District, Jiangsu, Xinhua Road, Nanjing Patentee after: Sinopec Yangzi Petrochemical Company Ltd. Address before: Dachang District, Jiangsu, Xinhua Road, Nanjing Patentee before: Yangtze Petrochemical Industry Co., Ltd. |
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