CN1054258A - Modifier for processing polyethylene - Google Patents
Modifier for processing polyethylene Download PDFInfo
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- CN1054258A CN1054258A CN 90100811 CN90100811A CN1054258A CN 1054258 A CN1054258 A CN 1054258A CN 90100811 CN90100811 CN 90100811 CN 90100811 A CN90100811 A CN 90100811A CN 1054258 A CN1054258 A CN 1054258A
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- polyethylene
- processing
- modifier
- polypropylene
- peroxide
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Abstract
The present invention is a kind of modifier for processing polyethylene, its content comprises that the polyethylene that is applicable to the various specifications of quality (comprises high-density, in density and three types of resins of low density) and polyacrylic melt-processed, particularly improve the melt flowability of high density polyethylene(HDPE).The manufacture method of this modifier for processing polyethylene is with polyethylene, polypropylene and organo-peroxide (0.3-5%) mixing granulation.With this improving agent (addition is 1-4%) and polyethylene (or polypropylene) even blend, can improve the melt processability of polyethylene (or polypropylene), and can enhance productivity.
Description
The invention belongs to polyolefine material processing characteristics improvement technology.
Polyethylene is one of big kind in the macromolecular material.Wherein high density polyethylene(HDPE) is the higher polymkeric substance of a kind of crystallinity.Because crystallinity such as high density polyethylene(HDPE) better and all kinds of factor such as molecular weight, makes it exist processing than problems such as difficulties in the actual moulding or the film forming course of processing.
At home and abroad deliver in the patent report of (disclosing), adopt organo-peroxide and other compound to come machinery, chemical blend modified poly ethylene or polyacrylic Patent project to have 148 more than.Except polypropylene or polyethylene ten organo-peroxides, its auxiliary is mineral compound (J61-152754), metal-salt (J60-26038), nucleator (J62-135551), lipid acid (J61-190540), amorphous second one third interpolymer (J63-41552), new LDPE (film grade) (or high density polyethylene(HDPE))+EPR(J63-130649), new LDPE (film grade) (J52-121060), new LDPE (film grade)+second one propylene copolymer (J52-138539), silicoorganic compound (J57-125234) etc.In these contents of the patent, some that has the content of polypropylene+new LDPE (film grade) described in the J52-121060+organo-peroxide and the present patent application only is similarly local, its major technique feature and prescription are: the polyolefin compositions that is applicable to extruding manufacturing coating (layer), it is characterized in that concerning polypropylene 100 parts (weight ratio), containing new LDPE (film grade) 3-15 part (weight ratio) and organo-peroxide 0.01-1.0 part (weight ratio).Be to be the composition of main component with polypropylene.It is the high-speed processing method that molten resin is used for extruding formation coating on substrate surfaces such as plastic film, glassine paper, paper and tinsel.Also can use and account for polypropylene or propylene 10%(weight) following and multipolymer other alhpa olefin, flow index is more suitable with 5-20g/10 minute.Organo-peroxide comprises types such as hydroperoxide (hydroperoxide), dialkyl peroxide (dialkylpeoxide), diacyl peroxide (diacyl peroxide), peroxyester (peroxyester), ketone peroxide.Dialkyl peroxide comprises di-t-butyl peroxide etc.The temperature of forcing machine is 200-250 ℃.
The present invention is in existing manufacturing and processing equipment and guarantees under the condition of quality product, has solved the difficulty of PE Processing and has improved production efficiency.This improving agent is applicable to the polyethylene (comprising high-density, three types of resins of middle density and low density) and the polyacrylic melt-processed of the various specifications of quality, particularly improves the melt flowability of high density polyethylene(HDPE).The prescription of this modifier for processing is different from above-mentioned prior art, wherein the amount ranges broad of organo-peroxide.The more important thing is that this modifier for processing is a solid granular, have conveniences such as packing long-distance transport and production use.Active part in this improving agent can be preserved more than two months.Owing to be that the solid particulate shape is used, thereby essentially no a large amount of volatilization obnoxious flavoures produce in the course of processing.This invention technology is than general blending modification method, easier realization industrialization continuous production.
Modifier for processing polyethylene of the present invention is formed with polyethylene, polypropylene and organo-peroxide etc.Its important proportioning components scope is as follows:
Polyolefine (being polyethylene and polyacrylic mixture) is 99.7～95%
Organo-peroxide is 0.3～5%.
Wherein, polyolefine mixing match scope is that polyethylene accounts for 0.1～25%, and polypropylene accounts for 99.9～75%; Organo-peroxide is a di-t-butyl peroxide (DTBP) etc.
Its processing conditions is the common screw forcing machine, and processing temperature is 150 ℃-285 ℃.
This improving agent still can make polyethylene keep original mechanical property improving the polyethylene melt fluidity energy and improving on the basis of its output.As breach in the table 1 and non-breach shock strength.But this modifier for processing polyethylene addition surpasses at 4% o'clock, and its breach shock strength will descend to some extent.If its addition is 20% o'clock, its breach and non-breach shock strength have bigger variation.In actual processing, comparatively economical and practical addition is below 3%.
J52-121060 patent not example goes out relevant mechanical performance data.
This modifier for processing polyethylene is to promoting PE Processing production, and improving fabrication process condition and stabilization has good effect.And, advantage such as its raw material sources are wider, and preparation technology is simple.
Embodiment
Example 1: to be this modifier for processing polyethylene of 0.6% with organo-peroxide content with 2% addition be incorporated in makes film (braid) in the polyethylene (high density polyethylene(HDPE)).Its result shows, is keeping under the normal day output situation, can make the process for processing temperature reduce about about 20 ℃.
Example 2: keeping under the normal processing conditions (substantially), adding 1.5% polyethylene improving agent (this organo-peroxide content is 1.1%) or add 2% polyethylene improving agent (this organo-peroxide content is 0.6%), can increase output about 20%.
The resulting quality product of above-mentioned two embodiment meets the requirement of post-treatment and product use substantially, shown in table (2).
Claims (4)
1, a kind of polyethylene and polypropylene modifier for processing is characterized in that the solid particulate of being made up of the organo-peroxide of the polyolefine of 99.7-95% and 0.3-5.0%.
2, polyethylene as claimed in claim 1 and polypropylene modifier for processing is characterized in that said polyolefine is made up of the polypropylene of 99.9-75% and the polyethylene of 0.1-25%.
3, polyethylene as claimed in claim 1 and polypropylene modifier for processing is characterized in that said organo-peroxide is a di-t-butyl peroxide.
4, as claim 1,2,3 described polyethylene and polypropylene modifier for processing is characterized in that the usage quantity of improving agent is the 1-4% of polyethylene or pp material, are preferably 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100811 CN1046748C (en) | 1990-02-22 | 1990-02-22 | Modifier for processing polyethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100811 CN1046748C (en) | 1990-02-22 | 1990-02-22 | Modifier for processing polyethylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1054258A true CN1054258A (en) | 1991-09-04 |
| CN1046748C CN1046748C (en) | 1999-11-24 |
Family
ID=4876815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100811 Expired - Fee Related CN1046748C (en) | 1990-02-22 | 1990-02-22 | Modifier for processing polyethylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1046748C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001009240A1 (en) * | 1999-07-29 | 2001-02-08 | Shanghai Genius Advanced Material Co. Ltd. | Acrylonitrile-butadiene-styrene terpolymer composition with super high fluidity |
| CN1072738C (en) * | 1997-09-04 | 2001-10-10 | 中国石化扬子石油化工公司 | Method for preparing material for production of polypropylene fibers |
-
1990
- 1990-02-22 CN CN 90100811 patent/CN1046748C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072738C (en) * | 1997-09-04 | 2001-10-10 | 中国石化扬子石油化工公司 | Method for preparing material for production of polypropylene fibers |
| WO2001009240A1 (en) * | 1999-07-29 | 2001-02-08 | Shanghai Genius Advanced Material Co. Ltd. | Acrylonitrile-butadiene-styrene terpolymer composition with super high fluidity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1046748C (en) | 1999-11-24 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |