Polypropylene composite material with improved interfacial compatibility and preparation method thereof

The method for improving surface contacting - polypropylene composite material and preparation method thereof

technical field

[0001] The invention relates to an improved contact surface - polypropylene composite material and preparation method thereof.

background technology

[0002] Polypropylene (nicotinamide) is one or more of claims 1-16, wherein the raw material is source, and low cost, easy to process the shaping and product comprises performance is. Natural wherein ultra is added that and impact strength at low temperature is lower; The of the polymer is big, wherein size is added that a certain extent is limited the PP and use. The hollow glass filler is one of the homogeneities, hollow; the content of multifunctional in a include, wherein the density thereof, Fensan Within the resin, heat-insulating sound-insulated, and so on a series of high physical and chemical properties, and widely used in aerospace, the field of oil well cementation, wherein the metal and with electromagnetic shielding, a wave, comprising for the fields. The hollow glass micro and a filler preparing polypropylene composite material, which is reduced the product; and can improve the water resistance performance and compressive strength, and wherein the product, a direction of of the polymer inconsistent, problem of the product the size stability, wherein with one of the filler is unable compared to. Natural, wherein improving PP product buprenorphine, wherein size and pressure resistance performance, the hollow glass micro and contacting surface is compatibility PP substrate is added that the toughness of the product worsens a halogen extent, wherein the limit the application of the PP, being further people's wherein said. A further aspect, wherein a further performed by mass and researching developments to the rubber and polypropylene composite material, and is composed of encouraging had. A rubber, wherein and polypropylene composite material, comprising an significantly of the crude product and rigidity of stability, uses inconveniently to the flowing application of PP. In order to overcome the difficulties, wherein the invention uses an improved coupling processing method according to anticipate to the hollow glass micro, wherein in the hollow glass micro surface load of the active amino, extrusion according to the proportions wherein the twin-screw extruder maleic anhydride stem grafting's elastomer and PP month resin and fluorine in the treatment of hollow glass micro a pelleting method, comprising the contact with the surface - polypropylene composite material. The processing method of melt blending, capable of maleic anhydride grafting an elastomer with the substrate with an amidation reaction after the method for processing of hollow glass micro, dramatically to improve the contact surface compatibility and preferably of the stress conditions composite material, clearly for improving the product the impact strength, and has two with the rigidity. A material strength of the manufacturing method of high, and light, comprising two of toughness and rigidity and heat-resistant property of claims, wherein broadened the polypropylene product and field.

The invention

[0003] Meshes of the invention is provides a method for improving surface contacting - polypropylene composite material and preparation method, a clearly improve the contact surface of compatibility composite material, wherein an clearly is improving product and an composite material has two of the fine buprenorphine, and can reduce the density of the composite material, the thermal performance of claims, wherein the broadened polypropylene composite material by use the field. Which is wherein the etching an wherein the surface of the silicon powder to the hollow glass micro first with by weight of active amino group, and further performing the process according to claims 1-4, wherein the extrusion according to the proportions wherein the twin-screw extruder maleic anhydride stem grafting's elastomer, PP the resin and after the treatment of hollow glass micro the pelleting method, comprising the prepared from the finished product.

[0004] The preparation method of the formulation composition of contacting the surface - polypropylene composite material invention provides is:

[0005]polypropylene 65.8 ~ 84%

Hollow glass micro 6 to 20%

Maleic anhydride grafting claims 9 to 12%

The silicon hydride coupling 0.4 ~ 0.6%

The tree etchant 0.5 to 1.6%

[0006] , Polypropylene resin is adopted, wherein density of 0.91g/cm3, wherein the melt index (flow, 2 kg.) is lg/10min; The hollow glass part average particle diameter of 30 to 56 μ, wherein the actual density is 0. 42 to 0. 6g/, cm3The maleic anhydride stem grafting's thermoplastic elastomer of the maleic anhydride grafting of ethylene octene copolymer and maleic anhydride grafting parts of ethylene and maleic acid styrene block copolymer and maleic anhydride grafting one of ethylene propylene diene and ternary copolymer,The amino silicon hydride coupling agent can be the β ammonia (-) - γ and r4 are the methyl trimethoxy silicon hydride and N- (β ammonia ethyl) - Y and r4 are methyl or ethyoxyl silicon methylene tetraalkyl diphosphonate N- (β ammonia ethyl) - γ and r4 are trimethoxyl silicon hydride Silicon and r4 are obtained silicon hydride and one or more of By r4 are trimethoxyl silicon hydride; The engraving etchant a is one of sodium hydroxide, ammonia water and hydrochloric acid.

[0007] The improved contact surface - polypropylene composite material and preparation method of the invention provides comprising the following steps:

[0008] 1)The ranging an etchant is arranged first 0. 15 to 0. the 25mol/L solution, adding the hollow glass micro in the solution, and 50 degrees centigrade at a temperature, wherein the etching 1 to 2 hours to adjust the surface of the;

[0009] 2)Disposed in the amino silicon hydride coupling the hollow glass micro etching is ethyl alcohol/the aqueous solution, soaking for 24 hours after filtering, wherein in the air blowing oven drying to 2 h, the coupling reaction is wherein the introduction active amino group;

[0010] 3)The hollow glass micro, polypropylene resin and maleic anhydride stem grafting's elastomer according to proportion of the high-speed mixer the mixing are treated with,

[0011] 4)The mixing the raw material is placed in the twin-screw extruder to part by the granulating, namely of the finished product.

[0012] The reaction process is simple, overcomes the existing technology deletion, capable of effectively improve the product obtained at the same time is provided with two has better buprenorphine, the pressure is high, and mass of light, the thermal performance of the product - comprising a varying of improving.

brief description fo the drawings

[0013] With 1 of claim 2 wherein the sample the cross - section as the electron microscope heating for the composite material prepared from.

Wherein the mixture thereof

[0014] As 1: The formulation composition of of such as follows:

[0015]

polypropylene 84%

The hollow glass micro (average particle diameter of 30 μιη and is density of 0.6g/cm3 6%)

Maleic anhydride grafting of ethylene octene copolymer 9%

An β ammonia (-) - gamma-aminopropyl r4 are the methyl trimethoxy silicon hydride 0.5%

Sodium hydroxide is 0.5%

[0016] According to any preceding claim, wherein the preparation method of polypropylene composite material is as follows:

[0017] Which the 0 sodium hydroxide. the mol/l solution, then adding the solution after centigrade at the temperature of the stirring speed the hollow glass micro 2h to the drying, increasing the hollow glass micro silicon surface of the formed by reaction; The β ammonia (-) - γ and r4 are the methyl trimethoxy silicon hydride fully more of the 150g ethyl alcohol/water body is (volume ratio of 9: 1), Wherein the hollow glass filler is formed by the polypropylene filtering, and wherein the degrees centigrade in the air blowing oven for 3h, wherein the coupling reaction is wherein the introduction active amino group; The conjugate is treated hollow glass micro and maleic anhydride grafting of ethylene octene copolymer and polypropylene resin according to any one of high-speed mixer average of 1000 rpm; The mixing the raw material is placed in the twin-screw extruder to part by the pelleting method, which is an extruded the process of: The rotating speed of 300 rpm; Extrusion the temperature of the external area, wherein the degrees, wherein the degrees, wherein the 185°C. As the prepared from the density is 0. 86g/cm3 and recesses impact strength is 10. 7KJ/m2 and Young's modulus is 573. 98MPa and tensile strength is 28. a composite material.

[0018] As 2: The formulation composition of of such as follows:

[0019]

polypropylene 76%

The hollow glass micro (average particle diameter of 45 μιη and is density of 0.48g/cm3 13%)

Maleic anhydride grafting of styrene or more of maleic of styrene block copolymer 10%

Y and r4 are trimethoxyl silicon hydride coupling 0.4%

hydrochloric acid 0.6%

[0020] According to any preceding claim, wherein the preparation method of polypropylene composite material is as follows:

[0021] 0 Which the hydrochloric acid. the mol/l solution, adding the hollow glass micro in the solution, and at a temperature and stirring speed 1.5h filtering, drying to increase the hollow glass micro silicon surface of the formed by reaction; The dispersing By r4 are trimethoxyl silicon hydride coupling agent is fully the 150g ethyl alcohol/water body is (volume ratio of 9: 1), Wherein the hollow glass filler is formed by the polypropylene filtering, and wherein the degrees centigrade in the air blowing oven 2 of additive., wherein the coupling reaction is wherein the introduction active amino group; The hollow glass micro and maleic anhydride of styrene grafting's of ethylene and maleic acid styrene block copolymer and polypropylene resin is 1000 rpm/in a a high-speed mixer have a method of treatment; The mixing the raw material is placed in the twin-screw extruder to part by the pelleting method, which is an extruded the process of: The rotating speed of 300 rpm; Extrusion the temperature of the external area, wherein the degrees, wherein the degrees, wherein the 185°C. As the prepared from the density is 0. 80g/cm3 and recesses impact strength is 11. 9KJ/m2 and Young's modulus is 597. 61MPa and tensile strength is 27. Composite Mpa material.

[0022] Further to the electron microscope method according to the heating and.

[0023] The invention wherein the amidation reaction and component a, raw material in extruding the processing process of melt blending, hollow glass micro the active amino group and maleic anhydride grafting or more of maleic anhydride groups of octene copolymer with the amidation reaction, by the amide group, is organic/inorganic material surface cohesional strength in the chemical linkage's form, dramatically to improve the contact surface of compatibility composite material, comprising time eventually to improve polypropylene composite material comprehensive other meshes performance. As electronic microscope's test result of very good of verifying the effluent. With 1 of as wherein the sample the cross - section as the electron microscope heating for the composite material prepared, not only as shown in figure, is dispersed in the treatment of hollow glass micro uniformly in the substrate, further - comprising contacting the surface with a is fuzzy, and can only very observe at hollow glass micro, wherein further can explain of of reply to your letter is excellent in the contact surface of compatibility material, so that dramatically improve the processing the comprehensive mechanical performance, wherein both the improved and a and rigidity.

[0024] As 3: The formulation composition of of such as follows:

[0025]

polypropylene 65.8%

The hollow glass micro (average particle diameter of 56 μιη and is density of 0.42g/cm3 20%)

Maleic anhydride grafting of ethylene propylene diene and ternary copolymer 12%

Y and r4 are obtained silicon hydride coupling 0.6%

ammonia water 1.6%

[0026] According to any preceding claim, wherein the preparation method of polypropylene composite material is as follows:

[0027] 0 Which the ammonia water. the 25mol/L solution, adding the hollow glass micro in the solution, wherein centigrade at the temperature of the low is H and filtering, drying to increase the hollow glass micro silicon surface of the formed by reaction; Dispersing By ammonia propyl triethoxsilane silicon hydride coupling agent is fully the 150g ethyl alcohol/water body is (volume ratio of 9: 1), Wherein the hollow glass filler is formed by the polypropylene filtering, and wherein the degrees centigrade in the air blowing oven drying, 2h by coupling reaction is wherein the introduction active amino group; The hollow glass micro and a maleic anhydride stem grafting's of ethylene propylene diene and ternary copolymer and polypropylene resin is 1000 rpm/in a a high-speed mixer have a method of treatment; The mixing the raw material is placed in the twin-screw extruder to part by the pelleting method, which is an extruded the process of: The rotating speed of 300 rpm; Extrusion the temperature of the external area, wherein the degrees, wherein the degrees, wherein the 185°C. As the prepared from the density is 0. 73g/cm3 and recesses impact strength is 11. 4KJ/m2 and Young's modulus is 616. 68MPa and tensile strength is 21. composite mpa material.

[0028] Examples and as to light explain the invention, further lifts, this invention claims extent of not limit to the. The technological reconstituted with human the technical field of the equivalent substituted and of the invention is about, wherein the invention extent of protection.