CN1175039C - Modified polypropylene composition as substitute of ABS resin - Google Patents
Modified polypropylene composition as substitute of ABS resin Download PDFInfo
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- CN1175039C CN1175039C CNB011204443A CN01120444A CN1175039C CN 1175039 C CN1175039 C CN 1175039C CN B011204443 A CNB011204443 A CN B011204443A CN 01120444 A CN01120444 A CN 01120444A CN 1175039 C CN1175039 C CN 1175039C
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Abstract
The present invention discloses modified polypropylene which comprises the following components: 100 parts by weight of polypropylene, 3 to 8 parts by weight of nanometer-grade montmorillonite, 0.5 to 1 part of self-control barium benzoate, and 5 to 10 parts by weight of the copolymer of POE, styrene and alpha-butene. After modification, a polypropylene composition has the characteristics of high stability of a product, low moulding shrinkage, good smoothness, high impact strength, etc., and can replace engineering plastic ABS resin to be used in industry.
Description
Technical field
The present invention relates to the polypropylene of modification, relate in particular that molding shrinkage is low, product size good stability and shock strength be high, can substitute the modified polypropene of engineering plastics ABS resin.
Background technology
The developing direction of current polymeric material field is common plastics through engineering approaches, engineering plastics high performance, in common polyolefine, polypropylene is the material that is hopeful to carry out through engineering approaches most, it has demonstrated the superiority of its easy through engineering approaches in automobile, field of household appliances, substituting ABS resin with polypropene composition is the optimal selection of common plastics through engineering approaches.
With ABS relatively, polypropylene (PP) has intensity approaching with it (stretchings, surface hardness etc.) and electrical property, has also simultaneously that water-intake rate is low, density is little, resistance to chemical attack and product surface are difficult for the advantage that chaps.But compare with ABS, following shortcoming arranged:
1, molding shrinkage height, the product size poor stability, yielding.
2, surface luster property is poor, causes the plumpness of goods low.
3, poor impact resistance is especially to the breach sensitivity.
Can carry out modification to PP although use the ABC technology, as improving its impact-resistance by adding rubber, by adding mineral filler, improve its intensity, dimensional stability and thermotolerance etc., enterprise is also arranged recently by changing the crystalline structure of PP, in conjunction with the ABC technology, improve polyacrylic shrinking percentage and glossiness, making its shrinking percentage is about 1.0%, and surface gloss reaches more than 90%, it is too high that this improved PP still exists mold shrinkage, and the big area injection-molded item is difficult to control the shortcoming of shape.
Summary of the invention
The purpose of this invention is to provide a kind of at all close polypropene composition of every technical indicator with the performance of ABS resin.
The present invention realizes by following composition, the consisting of of said composition: (weight meter)
(A) polypropylene is 100 parts
(B) nano level polynite 3-8 part
(C) self-control Barium dibenzoate (or aluminum benzoate) 0.5-1 part
(D) (POE) (or aluminum benzoate) 5-10 part of the multipolymer of vinylbenzene and alpha-butylene (molecular weight about about 20000)
Above-mentioned PP composition can be heated to 220 ℃ and make this mixture fusion by with above-mentioned component uniform mixing according to the above ratio, it is extruded granulation and producing again.
The technical data performance of the polypropene composition after modification of the present invention is as follows:
| Test event | Testing method | Unit | Index |
| Density | ?G/cm 3 | ≤1.05 | |
| MFI | ASTMD1238 | ?G/10min | 2-10 (can regulate) |
| Tensile strength | ASTMD638 | ?Mpa | ≥35 |
| Modulus in flexure | ASTMD790 | ?GP | ≥2.0 |
| Notched Izod impact strength | ASTMD265 | ?J/M | ≥180 |
| Heat-drawn wire | ASTMD648 | ?℃ | ≥120 |
| Molding shrinkage | ASTMD95 | ?％ | ≤0.7 |
| Glossiness | ?％ | ≥90 | |
| Surface hardness | Shao Shi | ≥60 |
We can see by last table, and the polypropene composition critical index molding shrinkage after the modification is reduced to 0.6-0.8%, and notched Izod impact strength J/M 〉=180 have reached the index of ABS resin.
The present invention adopts raw material to be: polypropylene is that Beijing petrochemical industry is produced (2401), molecular weight is the polypropylene of (50000), nano level polynite thickness is 1nm, length and width＜100nm, a small amount of density that adds the may command composition, POE (thermoplastic elastomer) improves notched Izod impact strength, and the main purpose of nano level Barium dibenzoate or aluminum benzoate is the molding shrinkage that improves the hardness of material, smooth finish and reduce composition.
Add a kind of in Barium dibenzoate or the aluminum benzoate in above composition, the hardness of its composition is improved, smooth finish is good, molding shrinkage obviously reduces.
The preparation method of described nano level benzoate is as follows:
Under 40-80 ℃ of temperature, concentration＜10% reaction forms a kind of colloid then with benzoyl oxide+barium sulfate or Tai-Ace S 150, and it is spray-dried to add stearic acid (resistance agglomerator) back again, is ground into 10nm-15nm.
Polypropene composition smooth finish after modification, shock strength and molding shrinkage all improve a lot.
Embodiment
Further specify the present invention below by embodiment.
Comparative Examples 1
With molecular weight is 50000 polypropylene, 100 grams
Polynite 3 grams
POE 7 grams
The mixed melting extruding pelletization obtains a kind of MODIFIED PP, and its performance is as follows:
| Test event | Testing method | Unit | Index |
| Density | ?G/cm 3 | ?0.92-1.02 | |
| MFI | ASTMD1238 | ?G/10min | ?2-10 |
| Tensile strength | ASTMD638 | ?Mpa | ?34-40 |
| Modulus in flexure | ASTMD790 | ?GP | ?≥1.90 |
| Notched Izod impact strength | ASTMD265 | ?J/M | ?≥100 |
| Heat-drawn wire | ASTMD648 | ?℃ | ?≥110 |
| Molding shrinkage | ASTMD95 | ?％ | ?1-1.50 |
| Glossiness | ?％ | ?≥90 | |
| Surface hardness | Shao Shi | ?≥60 |
As can be seen, as not adding Barium dibenzoate or aluminum benzoate, though density and smooth finish all approach ABS resin, molding shrinkage is 1.5 still to reach the performance range that can not reach ABS resin 0.4-0.7 from above table.
Embodiment 2
Get molecular weight and be 50000 polypropylene 100 grams
Polynite 3 grams
POE (thermoplastic elastomer) 7 grams
Self-control Barium dibenzoate 0.7 gram
With above-mentioned component uniform mixing, be heated to 220 ℃, melt extrude granulation, obtain a kind of MODIFIED PP, its performance is as follows:
| Test event | Testing method | Unit | Index |
| Density | ?G/cm 3 | ?≤1.05 | |
| ?MFI | ?ASTMD1238 | ?G/10min | 2-10 (can regulate) |
| Tensile strength | ?ASTMD638 | ?Mpa | ?≥35 |
| Modulus in flexure | ?ASTMD790 | ?GP | ?≥2.0 |
| Notched Izod impact strength | ?ASTMD265 | ?J/M | ?≥180 |
| Heat-drawn wire | ?ASTMD648 | ?℃ | ?≥120 |
| Molding shrinkage | ?ASTMD95 | ?％ | ?≤0.7 |
| Glossiness | ?％ | ?≥90 | |
| Surface hardness | Shao Shi | ?≥60 |
Embodiment 3
Get molecular weight and be 50000 polypropylene 100 grams
Polynite 3 grams
POE (thermoplastic elastomer) 5 grams
Self-control aluminum benzoate 0.8 gram
Through mixing, fusion, extrude with granulation and obtain a kind of MODIFIED PP, its performance is as follows:
| Test event | Testing method | Unit | Index |
| Density | ?G/cm 3 | ?0.9-1.04 | |
| MFI | ASTMD1238 | ?G/10min | ?2-10 |
| Tensile strength | ASTMD638 | ?Mpa | ?≥35 |
| Modulus in flexure | ASTMD790 | ?GP | ?≥2.0 |
| Notched Izod impact strength | ASTMD265 | ?J/M | ?≥180 |
| Heat-drawn wire | ASTMD648 | ?℃ | ?≥100 |
| Molding shrinkage | ASTMD95 | ?％ | ?≤0.7 |
| Glossiness | ?％ | ?≥90 | |
| Surface hardness | Shao Shi | ?≥61 |
Claims (1)
1, a kind of modified poly propylene composition, its raw material is formed as follows by weight:
Molecular weight is 100 parts of 50000 polypropylene
Nano level polynite 3-8 part
The multipolymer of vinylbenzene and alpha-butylene, molecular weight 20000 left and right sides 5-10 parts
Self-control Barium dibenzoate or aluminum benzoate 0.5-1 part are formed above-mentioned raw materials and are mixed in proportion, and are heated to 220 ℃ of fusions, extrude, granulation and producing;
Described self-control benzoate be with benzoyl oxide and barium sulfate or Tai-Ace S 150 under 40-80 ℃ of temperature, concentration＜10% reaction forms a kind of colloid then, adds stearic acid again, the back is spray-dried, is crushed to 10nm-15nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011204443A CN1175039C (en) | 2001-07-13 | 2001-07-13 | Modified polypropylene composition as substitute of ABS resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011204443A CN1175039C (en) | 2001-07-13 | 2001-07-13 | Modified polypropylene composition as substitute of ABS resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1396201A CN1396201A (en) | 2003-02-12 |
| CN1175039C true CN1175039C (en) | 2004-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011204443A Expired - Fee Related CN1175039C (en) | 2001-07-13 | 2001-07-13 | Modified polypropylene composition as substitute of ABS resin |
Country Status (1)
| Country | Link |
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| CN (1) | CN1175039C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0315812D0 (en) * | 2003-07-05 | 2003-08-13 | Univ Catholique Louvain | Nanocomposite compositions and their production |
| CN102070828B (en) * | 2010-12-09 | 2013-07-03 | 楼仲平 | Preparation method of high transparent degradable material and suction tube |
| CN106009313B (en) * | 2016-07-14 | 2018-10-09 | 武汉顺威赛特工程塑料有限公司 | A kind of high tenacity PP composite material and preparation methods substituting ABS |
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2001
- 2001-07-13 CN CNB011204443A patent/CN1175039C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1396201A (en) | 2003-02-12 |
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