CN1132222A - Modified polypropylene for mfg. soft package of pitch - Google Patents
Modified polypropylene for mfg. soft package of pitch Download PDFInfo
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- CN1132222A CN1132222A CN 95102960 CN95102960A CN1132222A CN 1132222 A CN1132222 A CN 1132222A CN 95102960 CN95102960 CN 95102960 CN 95102960 A CN95102960 A CN 95102960A CN 1132222 A CN1132222 A CN 1132222A
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- pitch
- ethylene
- polypropylene
- modified polypropene
- polyethylene
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Abstract
A modified polypropene used to make soft package bag of asphalt contains polypropene, polyethylene, ethylene-acetic acid copolymer, ethylene-propene copolymer and solid paraffin and features proper high resistance to heat, strength and antiageing nature, smelting point of 170-175 deg.C and good compatibility with asphalt.
Description
The present invention relates to a kind of polymer composition, particularly a kind of is the polymer composition of main component with the polypropylene.
At present, the main metal bucket that adopts of bituminous packing.Because metal bucket cost height, from great, it is big to take up room, and has increased transportation cost and efficient.In the use, heat earlier pitch is poured out, both waste energy, and the processing of the metal bucket after using is inconvenient, residual pitch also can pollute environment.Use the plain polypropylene material, the packing bag through technological processs such as spinning, braiding are made replaces metal bucket gradually, can be 130 ℃ of following cans, and its resistance toheat, intensity, ageing resistance etc. can satisfy service requirements.But polypropylene packing bag can not melt below 175 ℃, and miscible with pitch, makes its fusion if improve temperature, not only destroys the original performance of bituminous, nor can improve both consistencies.In actual use, must earlier packing bag be severed, or behind the asphalt melting packing bag be picked up, influence the progress of engineering.
The purpose of this invention is to provide a kind of modified polypropene that is used to make the soft package of pitch bag, soft packaging bag by this modified polypropene manufacturing, resistance toheat, intensity, ageing resistance etc. can satisfy the engineering service requirements, can fusion in 170～175 ℃ pitch, good with the bituminous consistency, and the various performances of protobitumen are not caused detrimentally affect.In actual engineering is used, construct after can directly pitch being melted together with packing bag, bring great convenience to engineering.
Purpose of the present invention can realize by following measure: this modified polypropene comprises (weight percent): polypropylene 70～95; Polyethylene 2～20; Ethene-acetate ethylene copolymer 1～10; Ethylene-propylene copolymer 1.0～15; Solid paraffin 0.5～8.Above-mentioned each component is mixed, and granulation or direct fabrics, are made packing bag at warp-knit cloth, overlay film.
Can be with the packing bag that above-mentioned modified polypropene is made at 130 ℃ of following can pitches and not softening, its resistance toheat, intensity, ageing resistance all can satisfy service requirements, and be 170～175 ℃ of fusions, good with the bituminous consistency.
The optimum ratio of modified polypropene of the present invention (weight percent) is; Polypropylene 70～80; Polyethylene 6～10; Ethene-acetate ethylene copolymer 4～6; Ethylene-propylene copolymer 8～～12; Solid paraffin 1～3.
The best proportioning (weight percent) of modified polypropene of the present invention is: polypropylene 75; Polyethylene 10; Ethene-acetate ethylene copolymer 5; Ethylene-propylene copolymer 8; Solid paraffin 2.
Polyacrylic fusing point is 170～175 ℃, and in spinning process, through batch mixing, fusion, drawing-off, polypropylene molecule is reset, and variation has taken place structure, and the tensile strength of its fiber has increased, the also corresponding raising of melt temperature.By regulating different drafting multiples, can obtain the different fiber of tensile strength respectively.In general spinning technique, the intensity macrofiber adopts 3～5 times of drafting multiples in the production.The TG-DTA test-results shows: the glass transition temp of polypropylene fibre is higher approximately 3～7 ℃ than pp material.The glass transition temp of modified polypropene of the present invention all has in various degree reduction than pp material, and about 3～5 ℃, promptly modified polypropene increases the susceptibility of heat.
Embodiment one:
With 75% (weight percent, as follows) polypropylene (melt index is 4.6g/10min), 10% polyethylene (molecular weight 100,000), 5% ethene-acetate ethylene copolymer (vinyl acetate content 25%), 8% ethylene-propylene copolymer, 2% solid paraffin mix granulation.The melt index of this modified polypropene is 5.0g/10min.Use this modified polypropene, the soft packaging bag of making through spinning, technological process such as weave cotton cloth can be under 130 ℃ temperature can pitch softening, the cloth of packing bag dropped in 170～175 ℃ the pitch, slowly stir, the cloth BOB(beginning of block) shrinks, molten be expanded into cotton-shapedly, be dispersed in fully at last in the pitch, need 6～7 clocks approximately.The pitch of miscible packing bag and the performance test data of protobitumen are as follows:
| Penetration degree (25 ℃, 0.1mm) | Extensibility (25 ℃, cm) | Softening temperature (℃) | |
| Protobitumen | ????54 | ????＞150 | ????50 |
| The miscible pitch of packing bag | ????56 | ????＞150 | ????47.5 |
Embodiment two
With 70% (weight percent, as follows) polypropylene (melt index is 4.6g/10min), 16% polyethylene (molecular weight 60,000), 5% ethene-acetate ethylene copolymer (vinyl acetate content 30%), 5% ethylene-propylene copolymer, 4% solid paraffin mix granulation.Fusion test is with embodiment one.Modified polypropene cloth fusion time in 170～175 ℃ pitch is 5～6 minutes.
Embodiment three
With 95% (weight percent, as follows) polypropylene (melt index is 4.6g/10min), 2.5% polyethylene (molecular weight 200,000), 1% ethene-acetate ethylene copolymer (vinyl acetate content 70%), 1% ethylene-propylene copolymer, 0.5% solid paraffin mix granulation.Fusion test is with embodiment one.Modified polypropene cloth fusion time in 170～175 ℃ pitch is 45 minutes.
Claims (3)
1. a modified polypropene is characterized in that comprising (weight percent): polypropylene 70～95; Polyethylene 2～20; Ethene-acetate ethylene copolymer 1～10; Ethylene-propylene copolymer 1.0～15; Solid paraffin 0.5～8.
2. modified polypropene according to claim 1 is characterized in that optimum ratio (weight percent) is: polypropylene 70～80; Polyethylene 6～10; Ethene-acetate ethylene copolymer 4～6; Ethylene-propylene copolymer 8～12; Solid paraffin 1～3.
3. modified polypropene according to claim 1 and 2 is characterized in that best proportioning (weight percent) is: polypropylene 75; Polyethylene 10; Ethene-acetate ethylene copolymer 5; Ethylene-propylene copolymer 8; Solid paraffin 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95102960 CN1132222A (en) | 1995-03-24 | 1995-03-24 | Modified polypropylene for mfg. soft package of pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95102960 CN1132222A (en) | 1995-03-24 | 1995-03-24 | Modified polypropylene for mfg. soft package of pitch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1132222A true CN1132222A (en) | 1996-10-02 |
Family
ID=5074528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95102960 Pending CN1132222A (en) | 1995-03-24 | 1995-03-24 | Modified polypropylene for mfg. soft package of pitch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1132222A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101678925A (en) * | 2007-05-10 | 2010-03-24 | 国际壳牌研究有限公司 | Paraffin wax composition |
| CN105820432A (en) * | 2016-04-18 | 2016-08-03 | 江苏优珀斯材料科技有限公司 | Modified polyolefin compound melting film and processing method thereof |
| CN110041718A (en) * | 2019-04-25 | 2019-07-23 | 山东高速路用新材料技术有限公司 | A kind of preparation method of environment-friendly type asphalt modifier |
-
1995
- 1995-03-24 CN CN 95102960 patent/CN1132222A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101678925A (en) * | 2007-05-10 | 2010-03-24 | 国际壳牌研究有限公司 | Paraffin wax composition |
| CN105820432A (en) * | 2016-04-18 | 2016-08-03 | 江苏优珀斯材料科技有限公司 | Modified polyolefin compound melting film and processing method thereof |
| CN105820432B (en) * | 2016-04-18 | 2018-07-03 | 江苏优珀斯材料科技有限公司 | Improved polyalkene is compound to melt film and its processing method |
| CN110041718A (en) * | 2019-04-25 | 2019-07-23 | 山东高速路用新材料技术有限公司 | A kind of preparation method of environment-friendly type asphalt modifier |
| CN110041718B (en) * | 2019-04-25 | 2021-11-19 | 山东高速路用新材料技术有限公司 | Preparation method of environment-friendly asphalt modifier |
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