CN102382368A - Carbon fiber/cenosphere/polypropylene ternary composited material and preparation method thereof - Google Patents

Abstract

The invention discloses a carbon fiber/cenosphere/polypropylene ternary composited material and a preparation method thereof. The proportion by weight of carbon fibers, cenospheres and polypropylene includes: 100 parts of polypropylene, 2 to 30 parts of carbon fibers and cenospheres which are larger than 0 part but smaller than 30 parts. Thermoplastic polypropylene resin is used as a base material and is modified by blending with the carbon fiber and the cenospheres, and accordingly, a carbon fiber/cenosphere/polypropylene blending system which is reinforced and toughened is formed on the condition of adding few carbon fibers. Since third-phase cenospheres are introduced into a carbon fiber/polypropylene composite system, the carbon fibers but the cenospheres are used as main carriers so that toughness of the composite system is improved. Besides, affection on mechanical performance of the system is more evident and cost is reduced evidently on the premise of identical additive amount as compared with those of a system added with PP-g-MAH.

Description

A kind of thomel/cenosphere/Vestolen PP 7052 trielement composite material and preparation method thereof

Technical field

The present invention relates to a kind of trielement composite material and preparation method thereof, especially thomel/cenosphere/Vestolen PP 7052 trielement composite material and preparation method thereof.

Background technology

Thomel (CF) is the general name that one type of carbon content surpasses the fiber of 92% non-graphite form, and its ideal as high-strength light strengthens body, and being usually used in resin, metal, pottery, cement etc. is in the compound system of matrix.Cenosphere (GB) is a kind of powder body material of loose, good fluidity; It is good to have sound insulation property, flame retardant resistance, electrical insulating property, and density is little, and oil absorbency is low; And characteristics such as intensity height; Since its excellent flowability can, be everlasting be used to improve liquidity in filling-modified can, the floating fibre of control exposes, improves surface smoothness etc.Cenosphere can be made or from flyash, separated and obtain by manual work, can be divided into again by the difference of its specific density and float pearl and heavy pearl; Its density is relatively lighter floats pearl, and density is 0.5 ~ 0.75g/ m3.Since its excellent flowability can, be everlasting be used to improve liquidity in filling-modified can, the floating fibre of control exposes, improves surface smoothness etc.Because to float Zhu Bi thinner, under force field, be prone to fragmentation, thereby lose the meaning of its hollow ball, therefore, float pearl and be used in thermoplastic resin system filling-modified of thermosetting resin and casting, compression molding more.

Current carbon fiber enhancement resin base composite material commonly used is main with thermosetting resin still, and particularly sheet molding compound (SMC) quite is widely used for the manufacturing of automobile component, especially in the U.S. and Germany.Because the thermosetting resin based composites exists that lower, the anti-damage ability of fracture toughness property is relatively poor, the prepreg life cycle is short, the goods process-cycle is long and shortcoming such as waste recovery difficulty; Having limited it further develops; Force people that existing same with thermosetting compound material is carried out toughening modifying; Meanwhile, people are also seeking new toughness material as matrix resin.

Along with fossil energy day by day reduce the pay attention to day by day to ecotope with people, energy-saving and emission-reduction have become the target of whole world joint efforts.This makes national defence, communications and transportation equipment manufactures such as space flight and air equipment, track traffic transportation equipment, boats and ships, automobile be faced with stern challenge." lightweight " is one of important means of present communications and transportation equipment manufacture energy-saving and emission-reduction, also is the important development direction and the research topic of present communications and transportation equipment manufacture.

Recent two decades comes, because rapid development of automobile industry and the rapid expansion of matrix material in the automotive material Application Areas, the obnoxious flavour of same with thermosetting compound material volatilizees and waste recovery problem seems particularly outstanding.Enhancing day by day along with human environment protection consciousness; In " world's thomel prospect in 2007 " (Global Outlook of Carbon Fiber 2007) meeting; Matrix material engineering teacher of Fu Baifuqi company William Michaels the Jenner point out; See that from following development trend automobile designers will more be had a preference for the thermoplastic composite that helps reclaiming with environmental protection.World's thomel prospect in 2008 can go up more " Application Prospect on the automobile " as one of 4 big special topics.Strengthening its excellent performance of thermoplastic resin based composite material and wide application prospect just because of thomel, is that country or individual are highly confidential to the preparation technology and the prescription of the high performance matrix material of this type.

  

Summary of the invention

The present invention is directed to thomel and strengthen the wide application prospect of thermoplastic resin based composite material, provide that a kind of intensity and toughness significantly strengthen, scope of application thomel/cenosphere/Vestolen PP 7052 trielement composite material and preparation method thereof comparatively widely.

Technical scheme of the present invention: thomel/cenosphere/Vestolen PP 7052 trielement composite material is characterized in that: the weight proportion of three kinds of materials is:

100 parts of Vestolen PP 7052,2-30 parts on thomel, cenosphere greater than 0 less than 30 parts.

The preparation method of said thomel/cenosphere/Vestolen PP 7052 trielement composite material is characterized in that:

(1) at first prepares thomel, cenosphere, Vestolen PP 7052 according to processing requirement;

(2) cenosphere is carried out surface treatment: using organic solvent is 0.5%-3% silane coupler solution as the solvent compound concentration, and lucifuge is mixed and soaked into cenosphere 0.5-3 hours; Filter treatment solution then, with plasma water drip washing 3-5 times; At last, oven dry postcooling;

(3) thomel/cenosphere/three kinds of materials of Vestolen PP 7052 are added according to its weight proportion, mix;

When (4) needing to make product, the matrix material of working good is added injector, carry out injection molding, obtain trielement composite material and product thereof.

Thomel/cenosphere of the present invention/Vestolen PP 7052 trielement composite material with respect to prior art, has following characteristics:

1, the present invention as body material, carries out blending and modifying with thomel and cenosphere to it with the thermoplastic polypropylene resin, has finally obtained under the situation that less thomel adds, to strengthen toughness reinforcing thomel/cenosphere/Vestolen PP 7052 tertiary blending system simultaneously.

2, in the carbon fiber/polypropylene compound system, introduce the third phase cenosphere; The carrier that bears main in impact process has become cenosphere by thomel; Thereby realized the toughness reinforcing of compound system, and under identical addition, with respect to adding PP-g-MAH; It is more remarkable to the influence of system mechanical property to add cenosphere, and cost also obviously reduces.

3, trielement composite material of the present invention has comparatively application prospects; Its preparation method is simple, and the operator can comparatively fast grasp.

Description of drawings

Fig. 1 is that the present invention carries out the process of surface treatment schema to cenosphere;

Fig. 2 is that the cenosphere addition stretches and notch shock Effect on Performance synoptic diagram to matrix material.

  

Embodiment

In Fig. 1, thomel/cenosphere of the present invention/Vestolen PP 7052 trielement composite material is characterized in that, the weight proportion of three kinds of materials is:

100 parts of Vestolen PP 7052,2-30 parts on thomel, cenosphere greater than 0 less than 30 parts;

Cenosphere is carried out surface treatment: at first, be 0.5%-3% silane coupler solution with organic solvent (like methyl alcohol, ethanol, methyl ether, ether, formaldehyde etc.) for the solvent compound concentration, lucifuge is mixed and was soaked into cenosphere 0.5-3 hours; Filter treatment solution then, with plasma water drip washing 3-5 times; At last, oven dry postcooling; Bake out temperature is generally below 80 ℃, to avoid the cenosphere loss.Silane coupling agent of the present invention except KH560 solution, also has other suitable silane coupling agents, like KH550, KH570, KH592, DL602, DL171 etc., can carry out surface treatment to cenosphere, satisfies the technology request for utilization.

Thomel of the present invention, length is shorter, is 2mm-7mm, about filament diameter 0.7mm.

The preparation method of thomel/cenosphere of the present invention/Vestolen PP 7052 trielement composite material,

1, at first prepares thomel, cenosphere, Vestolen PP 7052 according to processing requirement;

2, cenosphere is carried out surface treatment: is 0.5%-3% silane coupling agent KH560 solution with organic solvent (like methyl alcohol, ethanol, methyl ether, ether, formaldehyde etc.) for the solvent compound concentration, and lucifuge is mixed and soaked into cenosphere 0.5-3 hours; Filter treatment solution then, with plasma water drip washing 3 ~ 5 times; At last, oven dry postcooling;

3, thomel/cenosphere/three kinds of materials of Vestolen PP 7052 are added according to its weight proportion, mix;

When 4, needing to make product, the matrix material of working good is added injector, carry out injection molding, obtain required trielement composite material and product thereof.

Select the injector of prior art for use, its injection technique is: TTI-95G injector, barrel temperature are controlled between 190～230 ℃, and injection pressure is 50～80MPa, and dwell pressure is got about 80% of injection pressure, and be 15S cooling time.

According to different performance needs; The content of thomel can be 2,3,4,5,6,7,8,9,10,15,20,22,25,28,30 parts; Cenosphere is 0.1,0.2,0.5,1,2,3,4,5,8,9,10,12,13,15,16,, 18,19,20,22,25,28,30 parts, all can satisfy its requirement.

Specific embodiment: adopt 100 parts of Vestolen PP 7052,5 parts on thomel, cenosphere are respectively 0,5 part, 10 parts, 15 parts and 20 parts, prepare sample injection CF5, GB5, GB10, GB15, GB20 respectively.

Generally speaking, along with increasing of filler addition, the flowability of compound system can sharply descend, yet but makes the flowability of compound system be improved for increasing of its addition of cenosphere, mainly comes from its ball-like structure and bigger hardness.Torque capacity and balancing moment with RM-200A type torque rheometer CF/GB/PP matrix material when adding 0 ~ 20 part of cenosphere are measured, 210 ℃ of temperature, and rotating speed 30r/ min, feeding quantity 40g, test result is as shown in the table.

  

Can know that by last table behind the interpolation cenosphere, the rheological property of system is not said as most literature.When the cenosphere addition was 5 parts, the torque capacity of system was 70.2 Nm to the maximum, and the relative CF/PP system of the torque capacity of system does not only diminish to be increased on the contrary to some extent; And along with the increasing of cenosphere addition, the torque capacity of system just diminishes gradually, and when the cenosphere addition reached 20 parts, the torque capacity of system was 50.1 Nm, and the CF/PP system has descended 17.9% relatively; After adding cenosphere, the balancing moment of system all increases to some extent, thinks it mainly is that microballon breaks and causes, has confirmed that promptly the interpolation of cenosphere can increase the wearing and tearing that contour machining equipment causes really.

Fig. 2 representes that the cenosphere addition stretches and the notch shock Effect on Performance to matrix material: along with increasing of cenosphere addition; The tensile strength of compound system increases afterwards earlier and reduces; When the cenosphere addition was 15 parts, tensile strength reached and is 37.2MPa to the maximum, and purer PP has improved 46.5%; The CF/PP that does not add PP-g-MAH has improved 8.8%, near the optimum value 37.9MPa of the CF/PP system of adding PP-g-MAH; Notched Izod impact strength is then along with increasing always of cenosphere addition increases; But increase tendency slows down gradually; When addition was 20 parts, notched Izod impact strength was 12.0KJ/m2 to the maximum, and purer PP has improved 30.4%; The CF/PP that does not add PP-g-MAH has improved 33.3%, greater than the optimum value 10.3KJ/m2 of the CF/PP system of adding PP-g-MAH; But when the cenosphere addition is 5 parts, the mechanical property extreme difference of three-component compound system, tensile strength and notched Izod impact strength are respectively 27.0MPa and 5.0KJ/m2, far below other sample.

Claims (2)

1. thomel/cenosphere/Vestolen PP 7052 trielement composite material, it is characterized in that: the weight proportion of three kinds of materials is:

100 parts of Vestolen PP 7052,2-30 parts on thomel, cenosphere greater than 0 less than 30 parts.

2. the preparation method of the said thomel/cenosphere of claim 1/Vestolen PP 7052 trielement composite material is characterized in that:

(1) at first prepares thomel, cenosphere, Vestolen PP 7052 according to processing requirement;

(2) cenosphere is carried out surface treatment: using organic solvent is 0.5%-3% silane coupler solution as the solvent compound concentration, and lucifuge is mixed and soaked into cenosphere 0.5-3 hours; Filter treatment solution then, with plasma water drip washing 3-5 times; At last, oven dry postcooling;

(3) thomel/cenosphere/three kinds of materials of Vestolen PP 7052 are added according to its weight proportion, mix;

When (4) needing to make product, the matrix material of working good is added injector, carry out injection molding, obtain required trielement composite material or its product.

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