CN101235177A - Elastomer and organic rigidity particle coordination plasticizing polystyrene and preparation method thereof - Google Patents
Elastomer and organic rigidity particle coordination plasticizing polystyrene and preparation method thereof Download PDFInfo
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- CN101235177A CN101235177A CNA200710127800XA CN200710127800A CN101235177A CN 101235177 A CN101235177 A CN 101235177A CN A200710127800X A CNA200710127800X A CN A200710127800XA CN 200710127800 A CN200710127800 A CN 200710127800A CN 101235177 A CN101235177 A CN 101235177A
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Abstract
An elastomer and organic rigid particle co-operating toughened polyphenylacetylene and a corresponding preparation method belong to macromolecule material technical field, in particular to a toughened polyphenylacetylene prepared by fusing and blending polyphenylacetylene and co-operating components and a corresponding preparation method, wherein the co-operating components are polybutadiene rubber (PB) elastomer and organic rigid particles (PSDM) which is polymerized from phenylethene (St), divinylbenzene (DVB) and divinylbenzene (MMA) via emulsion. The inventive toughened polyphenylacetylene, compared with pure polyphenylacetylene, at basic tension strength has better impact strength, with wide application in plastic industry.
Description
Technical field
The invention belongs to technical field of polymer materials, be specially a kind of enhancing touthness of polyphenylethylene by adding and preparation method thereof.
Background technology
Polystyrene plastic has advantages such as high rigidity, easy dyeing and easy processing forming, is widely used in aspects such as electric, instrument, packing and decorating and daily life.But polystyrene belongs to brittle plastic, and erosion-resisting characteristics is lower, has limited its application aspect the high-impact goods.For this reason, people's p-poly-phenyl ethene toughening modifying has carried out a large amount of work for a long time, has roughly experienced elastomer blended modifier, thermoplastic resin modification, inorganic nano-particle blending and modifying and organic rigid-particle modification four-stage.To do an introduction respectively below:
(1) elastomer blended modifier
As far back as the twenties in 20th century, utilize rubber to resin modified method (F.E.Matthea, Brit, 1912,16,278.) according to what F.E.Matttea proposed in 1912, people have begun to utilize rubber that styrene resin is carried out blending and modifying.The elastomerics that has been used at present modification has polyhutadiene, natural rubber, terpolymer EP rubber etc.; The mode of modification also by initial blend, has expanded to graft polymerization.The toughness reinforcing mode of this class has obtained very big success industrial, but still has the problem that is difficult to overcome, and all reduces significantly as rigidity, intensity, heat-drawn wire.Typically, the otch Izod shock strength of for example shock resistance type polystyrene (HIPS) is 4.5 times of polystyrene (PS), but tensile modulus only is 46% of a polystyrene (PS).
(2) thermoplastic resin modification
Paul (Barlow J.W., Paul D.R.Polym.Eng.Sci.1974,24 (8), 525), Barentsen (BarentsenW.M., Heikens D.Polymer, 1974,15,119) and Heikens (Sjoerdsma S.D., Heikens D.et al.Polymer, 1980,21,1469) etc. the people has studied the toughening modifying of LDPE to PS, after finding to add PE-g-St or PS-g-E graft copolymer, help the raising of the compatible power between LDPE and the PS, thereby improve the mechanical property of blend.
Equally, in the modification of research polypropylene (PP) p-poly-phenyl ethene,, also must add expanding material during blend because PP and PS are incompatible.Discover: filling the PS/PP system with the silicon after the surface treatment can increase bounding force between the polymkeric substance interface, improve the tensile strength (Fang Zhengping of PS/PP system, Xu Chengwei, Xiang Yichong, BR and the DCP synergy in the PS/LLDPE/SBS system, SCI, 1996,17 (12), 1959.); RPS-MPP (maleic anhydride functionalization polypropylene) has increasing reaction effect (Fang Zhengping, Cha Linlin, Malaysian's dimension, Xu Chengwei, EPDM and PE coordination plasticizing polystyrene, China Synthetic Rubber Industry, 2002,25 (4), 251) preferably to the PS/PP system; The PS/PP system that melt blending is produced has the PS-g-PP graft copolymer to generate, thereby compatibilizing and co-mixing system has well improved the mechanical property (Scherbakoff, Natalia, et al.J.Adhes.1997,64,203) of blend.
(3) inorganic nano-particle blending and modifying
Compound intensity, rigidity, the toughness of polymkeric substance of not only making of inorganic nano-particle and polymkeric substance has obtained tangible change, and can increase the functional performances such as water-repellancy, barrier, thermotolerance and resistance to deterioration of polymkeric substance.Nanoparticle/the polymer composites that has prepared at present has: PS/Al
2O
3Matrix material, PS/PbS nanometer polymer optical material, PS/TiO with good resistance to abrasion
2Nano composite material, PS/CeO
2Nano-hybrid material, PS/CaCO
3Nano composite material and PS/ clay nano material etc.
(4) organic rigid-particle modification
Organic rigid-particle is toughness reinforcing to be a kind of new way of plastic toughening, this method can improve intensity, rigidity and the thermotolerance of material when improving matrix toughness, and do not have the deficiency that processing characteristics descends, reach not only toughness reinforcing but also enhanced purpose, overcome the problem that elastic body toughening occurs.
The organic rigid-particle of studying more enhancing touthness of polyphenylethylene by adding is the nucleocapsid structure particulate, comprise stone soft shell and two kinds of structures of soft nuclear duricrust, nuclear contains alkenyl arene segment, acrylate segment and linking agent, shell is the segment that contains alkenyl arene, and the segment of shell links (Yang Bai, Shen Jiaji by an end and the nuclear phase of linking agent, gold is full, Lu Wenkui, core-shell particle toughened polystyrene material, CN1194994A).
Summary of the invention
The present invention aims to provide a kind of novel method for preparing enhancing touthness of polyphenylethylene by adding, i.e. the polystyrene of elastomerics and organic rigidity particle coordination plasticizing on the basis of above-mentioned toughening polystyrene method of modifying and under inspiring, this preparation process is simple, processing ease, favorable reproducibility is easy to suitability for industrialized production.
Concrete preparation process is as follows:
(1) preparation of organic rigid-particle PSDM
With buffer reagent (is pH value conditioning agent NaHCO
3) and emulsifying agent (sodium oleate SD), solvent deionized water add in the there-necked flask, slowly stir, it is uniformly dispersed.Add monomer (vinylbenzene and methyl methacrylate) and linking agent (Vinylstyrene DVB) then, stir fast to disperse.After one and a half hours, beginning is logical N in there-necked flask
2, reduce stir speed (S.S.) simultaneously, and add initiator (Sodium Persulfate KPS), flask is put into 78 ℃ of water-bath thermostatically heating, connect cooling and reflux device simultaneously, the beginning emulsion polymerization.Stop logical nitrogen after one hour.Last question response finishes, and stops to stir, and takes out reaction vessel.With particle breakdown of emulsion, washing, drying, the grinding that letex polymerization makes, make the PSDM organic rigid-particle of particle diameter about 120nm.
(2) preparation of coordination plasticizing polystyrene
By industrial PS, PSDM and cis-butadiene cement are with certain mass proportioning 100: (0～1.5): mix (0～11), on twin-roll plastic mixing mill, carry out the about 10～30min of melt blending, preliminary roller 150-155 ℃, back roller 150-155 ℃, after the co-mixing system that makes is pulverized, make impact and tensile bars, test by the injection moulding machine injection moulding.
Description of drawings
Figure has provided enhancing touthness of polyphenylethylene by adding preparation technology schema.
Specific implementation method
Following examples are only for further specifying the present invention, are not violating under the purport of the present invention, and the present invention should be not limited to the content that following experimental example is specifically expressed.
Embodiment is raw materials used as follows:
Vinylbenzene Shandong Qilu Petrochemical company limited
Methyl methacrylate Shandong Qilu Petrochemical company limited
Industry PS Shandong Qilu Petrochemical company limited
Cis-1,4-polybutadiene rubber (BR9000) Shandong Qilu Petrochemical company limited
Sodium oleate analytical pure Shanghai reagent one factory
Vinylstyrene (DVB) Shanghai reagent one factory
Sodium Persulfate (KPS) Shanghai reagent one factory
NaHCO
3Analytical pure Beijing chemical reagents corporation
The preparation of blend sample:
With exsiccant industry PS, cis-butadiene cement and PSDM rigid particles were with quality proportioning 100: 7: (0～1.5%) is added to the about 15min of melt blending on the XQLB type twin-roll plastic mixing mill of making first rubber machinery plant, Shanghai, make impact and tensile bars by the injection moulding machine injection moulding, test.
The performance test of blend sample:
(1) shock strength: carry out the simply supported beam impact experiment by GB1043-93, the breach sample size is 70 * 15 * 10mm
3, breach is wide to be 3.0mm, is 2.0mm deeply, the non-notch sample size is 70 * 15 * 10mm
3
(2) tensile strength: carry out stretching experiment by GB1040-89, sample is made dumbbell shape, tests on the high ferro universal testing machine, and draw speed is 50mm/min.
The temperature of all test experiments is 23 ℃, and the laboratory sample number is 5, averages.
Test result such as following table:
Table 1 PS/PB/PSDM blend mechanical property
Claims (5)
1. elastomerics and organic rigidity particle coordination plasticizing polystyrene, it is characterized in that it be by polystyrene, organic rigid-particle PSDM and elastomerics according to mass ratio 100: (0～1.5): (0～7) is prepared from by the mode of melt blending.
2. be by vinylbenzene according to claims 1 described organic rigid-particle PSDM, methyl methacrylate and Vinylstyrene form by letex polymerization, and wherein divinylbenzene is a linking agent.
3. be cis-1,4-polybutadiene rubber according to claims 1 described elastic body toughening component.
4. the mass fraction according to elastic body toughening component of adding in claims 1 described polystyrene and organic rigid-particle PSDM is (0～7): (0～1.5).
5. in the melt blending technology according to claims 1 described enhancing touthness of polyphenylethylene by adding, the preliminary roller of twin-roll plastic mixing mill and back roll temperature are 150-155 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710127800XA CN101235177A (en) | 2007-06-30 | 2007-06-30 | Elastomer and organic rigidity particle coordination plasticizing polystyrene and preparation method thereof |
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|---|---|---|---|
| CNA200710127800XA CN101235177A (en) | 2007-06-30 | 2007-06-30 | Elastomer and organic rigidity particle coordination plasticizing polystyrene and preparation method thereof |
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| CN101235177A true CN101235177A (en) | 2008-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456511A (en) * | 2022-01-26 | 2022-05-10 | 无锡会通轻质材料股份有限公司 | Expanded polyolefin bead and preparation method thereof |
-
2007
- 2007-06-30 CN CNA200710127800XA patent/CN101235177A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456511A (en) * | 2022-01-26 | 2022-05-10 | 无锡会通轻质材料股份有限公司 | Expanded polyolefin bead and preparation method thereof |
| CN114456511B (en) * | 2022-01-26 | 2023-07-11 | 无锡会通轻质材料股份有限公司 | Foaming polyolefin beads and preparation method thereof |
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Open date: 20080806 |