CN101092497A - Method for preparing composite talcum powder filled material of polypropylene - Google Patents
Method for preparing composite talcum powder filled material of polypropylene Download PDFInfo
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- CN101092497A CN101092497A CN 200710044228 CN200710044228A CN101092497A CN 101092497 A CN101092497 A CN 101092497A CN 200710044228 CN200710044228 CN 200710044228 CN 200710044228 A CN200710044228 A CN 200710044228A CN 101092497 A CN101092497 A CN 101092497A
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Abstract
This invention relates to a method for preparing talcum powder-filled polypropylene composite material. The method comprises: adding maleic anhydride-grafted polypropylene, talcum powder, epoxy resin and curing agent to polypropylene resin in an internal mixer, open mill or screw extruder at a certain blending temperature, blending, and curing epoxy resin in situ. The interfacial force between epoxy resin and polypropylene or talcum powder increased, and the mechanical properties of the obtained composite material are obviously improved. Compared with traditional surface treatment of talcum powder with coupling agent, or the addition of compatibilizer, the talcum powder-filled polypropylene composite material in this invention has improved rigidity and toughness. The method has such advantages as simple process, high processability and high adaptability. The talcum powder-filled polypropylene composite material can be used in buildings, automobile fittings and electric appliances.
Description
Technical field
The present invention relates to a kind of preparation method of composite talcum powder filled material of polypropylene, the polypropylene that adds maleic anhydride graft is as expanding material, increase interface interaction power between polypropylene and the talcum powder by dynamical cure Resins, epoxy, make composite materials property be significantly improved.Prepared matrix material can be used as materials such as civil construction, auto parts machinery, household electrical appliance.
Background technology
Inorganic Fillers Filled polypropylene (PP) can reduce material cost, improves mechanical property, the thermal stability of material, improves the dimensional stability of goods etc.Because the macromolecular chain of PP lacks polarity, consistency is poor during with the mineral filler blend, and dispersed each other bad, interfacial adhesion is low, is easy to generate to be separated or the absciss layer phenomenon, causes the performance of material inferior.In order to address this problem,,, improve the various performances of matrix material to increase the cohesive force between resin and filler by means of coupling agent filling surface is carried out modification habitually in the past.Though coupling agent has stronger interaction with inorganic filler surface, its functional group and nonpolar PP difficulty have stronger interaction.Adopt modified polyolefin of common occurrence as interface modifier, its application is increasingly extensive, and acrylic acid-grafted polypropylene and maleic anhydride inoculated polypropylene (MAH-g-PP) have in various degree improvement to the performance of PP/ glass fiber compound material, at CaCO
3After adding maleic anhydride inoculated polypropylene in the/PP matrix material, the mechanical property of material also is significantly improved.
Talcum powder can improve the rigidity of goods as the plastics weighting agent, improves dimensional stability, prevents high temperature creep, thereby enjoys people to pay close attention to.Talcum powder is filled the production that the PP matrix material has been widely used in trolley part and articles for daily use, its product with do not fill talcous PP compare have good apparent mass, low shrinking percentage and higher heat-drawn wire, yet because the affinity of two-phase interface is not strong, talcous direct filling often causes the decline of some mechanical properties, thereby the application of matrix material is restricted.Talcum powder is carried out surface modification treatment or adds MAH-g-PP, all can improve the interface interaction power of talcum powder and PP effectively, improve the dispersion state of talcum powder in PP, thereby improve the intensity and the rigidity of matrix material, but the toughness of material decreases.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, propose a kind of preparation method of composite talcum powder filled material of polypropylene, production technique is simple, and prepared matrix material not only intensity and rigidity is higher, and the toughness of material also increases.
For realizing this purpose, the present invention is applied to dynamical cure Resins, epoxy technology in polypropylene/talcum powder system, the preparation method of the composite talcum powder filled material of polypropylene that proposes, be at Banbury mixer, in mill or the screw extrusion press, under 190～200 ℃ blending temperature, the polypropylene that in polypropylene, adds maleic anhydride graft successively, talcum powder, Resins, epoxy, solidifying agent carries out mixing, wherein used polypropylene is a homo-polypropylene, its consumption is 45～80 weight parts, the polyacrylic consumption of maleic anhydride graft is 5～15 weight parts, content of epoxy resin is 1～10 weight part, amount of talc 15～45 weight parts, hardener dose is 0.05～1 weight part, and the blend time is 7～15min, obtains novel composite talcum powder filled material of polypropylene.
The Resins, epoxy that uses among the present invention is bisphenol-A diglycidyl ether type, Bisphenol F diglycidyl ether-type and line style phenolic aldehyde polyglycidyl ether type Resins, epoxy.
The solidifying agent that the present invention uses is dicyanamide, imidazolium compounds (glyoxal ethyline, 2-ethyl-4-methylimidazole (EMI-2,4) etc.) and dihydrazide compound (adipic dihydrazide, m-phthalic acid two hydrazides, certain herbaceous plants with big flowers hydrazine etc.).
In the method for the invention, polypropylene with maleic anhydride graft of active group can react with hydroxyl in the Resins, epoxy and epoxide group, promoted consistency between Resins, epoxy and polypropylene and the talcum powder, after adding solidifying agent, because under the effect of high shear force, Resins, epoxy " on the spot solidify " and and polypropylene and talcum powder between the interface have an effect, increase interface interaction power, make composite materials property be significantly improved.Adopt coupling agent that talcum powder is carried out surface treatment with tradition, or add expanding material and compare, the rigidity and the toughness of composite talcum powder filled material of polypropylene all improve to some extent.
Preparation method provided by the present invention is easy to operate, and technology is simple, and the composite talcum powder filled material of polypropylene modulus and the toughness that make are all significantly improved, stable performance, suitability is strong, can satisfy the requirement of engineering materials, can be used as materials such as civil construction, auto parts machinery, household electrical appliance.
Embodiment
Below by specific embodiment technical scheme of the present invention is further described.Following examples are to further specify of the present invention, rather than restriction the present invention.
Embodiment 1-5
By the prescription in the table-1, under 190 ℃ temperature, in Banbury mixer or mill, at first add polypropylene, the PP (MAH-g-PP), the Resins, epoxy (bisphenol-A diglycidyl ether type that add maleic anhydride graft then successively, the trade mark: DGEBA), talcum powder, 2-ethyl-4-methylimidazole (EMI-2,4), Resins, epoxy generation curing reaction in the blend process, and between polypropylene and the talcum powder have an effect in the interface.The matrix material that makes is in blocks with the vulcanizing press mold pressing.Tailor batten by standard size, sample is pressed ASTM D638 respectively, ASTM D790, performance index such as ASTM D256 standard testing stretching, bending, impact.Test result is shown in table-1.
Table-1
| Embodiment | 1 | 2 | 3 | 4 | 5 |
| Prescription (parts by weight) polypropylene Resins, epoxy (DGEBA) MAH-g-PP EMI-2,4 talcum powder mechanical property shock strengths, the J/m tensile strength, the MPa elongation at break, the % modulus in flexure, MPa | 80 20 25 36.8 6.6 2250 | 75 5 20 32 40.7 10.7 2376 | 80 5 20 27 37.6 7.7 2283 | 75 5 5 20 36 41.8 12.2 2435 | 75 5 5 0.2 20 41 43.2 11.3 2542 |
As can be seen, add MAH-g-PP in PP/ talcum powder matrix material from table-1, shock strength, tensile strength and modulus in flexure all have obvious must the raising.This shows that MAH-g-PP has played the effect of coupling agent, has improved composite materials property.Add Resins, epoxy in PP/ talcum powder matrix material, its mechanical property has improvement slightly, but is not clearly, and Resins, epoxy is used in this explanation separately, and two components in the PP/ talcum powder matrix material are not almost had coupled action.When MAH-g-PP and Resins, epoxy are added in the PP/ talcum powder matrix material simultaneously, the mechanical property of resultant matrix material is better than the obtained matrix material of independent use MAH-g-PP slightly.The mechanical property of dynamical cure PP/MAH-g-PP/ talcum powder/epoxy resin composite material is best, and shock strength, tensile strength and modulus in flexure all are significantly improved.This shows that dynamical cure Resins, epoxy can further promote PP and talcous interface interaction in the matrix material, causes performance to be improved to some extent, and particularly shock strength and modulus in flexure increase are comparatively remarkable.
Embodiment 6-14
By the prescription in the table-2, under 190 ℃ temperature, in Banbury mixer or mill, at first add polypropylene, the PP (MAH-g-PP), the Resins, epoxy (bisphenol-A diglycidyl ether type that add maleic anhydride graft then successively, the trade mark: DGEBA), talcum powder, dicyanamide solidifying agent, Resins, epoxy dynamical cure in the blend process.Specimen preparation and testing standard are operated by embodiment 1-5.Test result is shown in table-2.
Table-2
| Embodiment | 6 | 9 | 10 | 11 | 12 | 13 | 14 |
| Prescription (parts by weight) polypropylene Resins, epoxy MAH-g-PP dicyanamide talcum powder is learned performance hit intensity, the J/m tensile strength, the MPa elongation at break, the % modulus in flexure, MPa | 75 1 5 0.05 20 32 40.7 12.5 2237 | 75 2 5 0.1 20 36 42.1 13.6 2386 | 75 5 5 0.25 20 40 43.2 12.2 2545 | 75 10 5 0.5 20 36 45.2 7.2 2756 | 55 5 10 0.25 35 37 46.2 6.0 3010 | 45 10 10 0.5 45 39 45.4 7.1 3175 | 45 10 15 0.5 40 40 47.4 5.5 3196 |
From table-2 as can be seen, with the increase of content of epoxy resin, the shock strength of matrix material, tensile strength, modulus in flexure obviously increase, and elongation at break has decline slightly.When content of epoxy resin surpassed 5 parts, the elongation at break of matrix material obviously reduced, but tensile strength and modulus in flexure continue to increase.This explanation content of epoxy resin is during less than 5 parts, and Resins, epoxy is main has an effect with PP and talcous interface, and increase interface interaction power makes composite materials property be significantly improved.When content of epoxy resin surpassed 5 parts, Resins, epoxy was except that acting on PP and talcum powder interface, and unnecessary solidified Resins, epoxy plays the effect of filler as rigid particles, makes modulus in flexure and tensile strength be enhanced.
Claims (3)
1, a kind of preparation method of composite talcum powder filled material of polypropylene, it is characterized in that, at Banbury mixer, in mill or the screw extrusion press, under 190～200 ℃ blending temperature, the polypropylene that in polypropylene, adds maleic anhydride graft successively, talcum powder, Resins, epoxy, solidifying agent carries out mixing, wherein used polypropylene is a homo-polypropylene, its consumption is 45～80 weight parts, the polyacrylic consumption of maleic anhydride graft is 5～15 weight parts, content of epoxy resin is 1～10 weight part, and amount of talc is 15～45 weight parts, and hardener dose is 0.05～1 weight part, the blend time is 7～15 minutes, obtains composite talcum powder filled material of polypropylene.
2, according to the preparation method of the composite talcum powder filled material of polypropylene of claim 1, it is characterized in that described Resins, epoxy is bisphenol-A diglycidyl ether type, Bisphenol F diglycidyl ether-type or line style phenolic aldehyde polyglycidyl ether type Resins, epoxy.
3, according to the preparation method of the composite talcum powder filled material of polypropylene of claim 1, it is characterized in that described solidifying agent is dicyanamide, glyoxal ethyline, 2-ethyl-4-methylimidazole, adipic dihydrazide, m-phthalic acid two hydrazides or certain herbaceous plants with big flowers hydrazine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710044228 CN101092497A (en) | 2007-07-26 | 2007-07-26 | Method for preparing composite talcum powder filled material of polypropylene |
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| CN 200710044228 CN101092497A (en) | 2007-07-26 | 2007-07-26 | Method for preparing composite talcum powder filled material of polypropylene |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002188A (en) * | 2010-11-17 | 2011-04-06 | 武汉工程大学 | Method for preparing dynamic curing epoxy resin, inorganic filler and polyolefin composite |
| CN102086280A (en) * | 2009-12-04 | 2011-06-08 | 中国石油化工股份有限公司 | Preparation method of polypropylene nano composite material |
| CN102731904A (en) * | 2012-05-11 | 2012-10-17 | 上海大学 | Enhanced master batch filled with modified talc powder, and preparation method thereof |
| CN102816383A (en) * | 2012-08-07 | 2012-12-12 | 杭州绿鼎压滤机制造有限公司 | High temperature and pressure resistant filter plate of filter press |
| CN105694216A (en) * | 2016-03-04 | 2016-06-22 | 苏州润佳工程塑料股份有限公司 | Weld bond resisting modified polypropylene |
| CN107540874A (en) * | 2017-07-31 | 2018-01-05 | 常州市卜诺赛机电技术有限公司 | A kind of preparation method of the dedicated modified talcum powder of polypropylene plastics |
| CN108794884A (en) * | 2018-05-25 | 2018-11-13 | 宁波星陆汽车部件有限公司 | Nano modification Anti-aging, high-strength degree wheel cover preparation process |
| CN114456499A (en) * | 2021-12-30 | 2022-05-10 | 安徽志诚机电零部件有限公司 | Polypropylene material for anti-seepage expansion kettle and preparation method thereof |
-
2007
- 2007-07-26 CN CN 200710044228 patent/CN101092497A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086280A (en) * | 2009-12-04 | 2011-06-08 | 中国石油化工股份有限公司 | Preparation method of polypropylene nano composite material |
| CN102086280B (en) * | 2009-12-04 | 2014-04-16 | 中国石油化工股份有限公司 | Preparation method of polypropylene nano composite material |
| CN102002188A (en) * | 2010-11-17 | 2011-04-06 | 武汉工程大学 | Method for preparing dynamic curing epoxy resin, inorganic filler and polyolefin composite |
| CN102731904A (en) * | 2012-05-11 | 2012-10-17 | 上海大学 | Enhanced master batch filled with modified talc powder, and preparation method thereof |
| CN102731904B (en) * | 2012-05-11 | 2014-07-09 | 上海大学 | Enhanced master batch filled with modified talc powder, and preparation method thereof |
| CN102816383A (en) * | 2012-08-07 | 2012-12-12 | 杭州绿鼎压滤机制造有限公司 | High temperature and pressure resistant filter plate of filter press |
| CN102816383B (en) * | 2012-08-07 | 2016-04-20 | 杭州绿鼎压滤机制造有限公司 | A kind of filter press filter board of high-temperature-resistant high-pressure-resistant |
| CN105694216A (en) * | 2016-03-04 | 2016-06-22 | 苏州润佳工程塑料股份有限公司 | Weld bond resisting modified polypropylene |
| CN107540874A (en) * | 2017-07-31 | 2018-01-05 | 常州市卜诺赛机电技术有限公司 | A kind of preparation method of the dedicated modified talcum powder of polypropylene plastics |
| CN108794884A (en) * | 2018-05-25 | 2018-11-13 | 宁波星陆汽车部件有限公司 | Nano modification Anti-aging, high-strength degree wheel cover preparation process |
| CN114456499A (en) * | 2021-12-30 | 2022-05-10 | 安徽志诚机电零部件有限公司 | Polypropylene material for anti-seepage expansion kettle and preparation method thereof |
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