Basalt fiber/polypropylene composite material based on surface roughening and interface enhancement and preparation method of basalt fiber/polypropylene composite material

A basalt fiber and surface roughening technology, which is applied in the field of basalt fiber/polypropylene composite material and its preparation, can solve the problems of difficulty in ensuring the shedding, deterioration of the excellent performance of basalt fiber, and the deterioration of basalt fiber performance, so as to improve the contact area and mutual force, enhance the interface mechanical interlock, and promote the effect of epigenetic crystallization

Active Publication Date: 2021-12-31
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) For the technical route of coupling agent modified basalt fiber to enhance the performance of polypropylene, there are two main problems: one is that because of the surface inertness of basalt fiber, it is difficult for the polar groups on the surface of the coupling agent to interact with the surface of basalt fiber Chemical reaction, or the formation of hydrogen bonds, causing the coupling agent can not be tightly combined with the basalt fiber, so it can not play the role of interface "bridge"; such as Chinese patent CN110358185 A, just by adding coupling agent and corundum ( Aluminum), which is just a simple surface coating, its adhesion on the surface of basalt fibers is doubtful, and it is difficult to ensure that it will not fall off from the surface of basalt fibers in subsequent processing; the second is that the use of coupl

Method used

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  • Basalt fiber/polypropylene composite material based on surface roughening and interface enhancement and preparation method of basalt fiber/polypropylene composite material
  • Basalt fiber/polypropylene composite material based on surface roughening and interface enhancement and preparation method of basalt fiber/polypropylene composite material
  • Basalt fiber/polypropylene composite material based on surface roughening and interface enhancement and preparation method of basalt fiber/polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of preparation method based on the basalt fiber / polypropylene composite material that surface roughening interface strengthens, comprises the following steps:

[0037](1) Take basalt fibers (fiber diameter 13 μm, length 12mm) and heat-treat them at 300°C for 30 minutes to remove the sizing agent and other organic impurities coated during spinning; then dilute acrylic acid with absolute ethanol (more than 99.5vol%) into Acrylic acid solution with a mass fraction of 50wt%, heat-treated basalt fibers were added to the acrylic acid solution at 15wt% of the mass of the acrylic acid solution, stirred at 200 rpm for 1 hr, then left to stand for 1 hr, filtered and placed in a constant temperature drying oven at 80 ° C for 6 hr to obtain Acrylic treated basalt fiber, its scanning electron microscope picture is shown in figure 1 ;

[0038] (2) The basalt fibers treated with acrylic acid are subjected to electron beam irradiation treatment in air atmosphere, and the irradi...

Embodiment 2-13

[0045] Embodiments 2-13 are based on Embodiment 1, and some process parameters have been modified and adjusted. Table 1 shows the process parameters that are different from Embodiment 1 in each embodiment.

[0046] The processing parameter of table 1 embodiment 2-13

[0047]

[0048]

[0049] In Table 1, "-" represents the same as Example 1.

[0050] The performance test results of the above-mentioned embodiments 2-13 are shown in Table 2.

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Abstract

The invention discloses a basalt fiber/polypropylene composite material based on surface roughening interface enhancement and a preparation method of the basalt fiber/polypropylene composite material, and belongs to the technical field of new composite materials. The preparation method comprises basalt fiber surface roughening treatment and composite material preparation. The basalt fiber surface roughening treatment comprises the following steps: (1) acrylic acid dipping treatment; (2) electron beam irradiation treatment; and (3) in-situ growth of nano silicon dioxide on the surface of the basalt fiber. The surface of the short-cut basalt fiber is roughened, and part of alkyl is grafted on the surface of the short-cut basalt fiber, so that the contact area and interaction force between the basalt fiber and a polypropylene matrix are greatly increased, interface mechanical interlocking is enhanced, epiphytic crystallization of the polypropylene matrix on the fiber surface is promoted, stress conduction of the interface of the composite material is enhanced, the inhibition capability of the fibers on the development of matrix cracks in the deformation process is improved, and thus the mechanical property of the composite material is remarkably improved.

Description

technical field [0001] The invention relates to the technical field of new composite materials, in particular to a basalt fiber / polypropylene composite material based on surface roughening interface reinforcement and a preparation method thereof. Background technique [0002] Polypropylene has the advantages of corrosion resistance, non-toxic and tasteless, good impact strength, good electrical insulation, and easy processing. It is already one of the three general-purpose plastics. However, compared with engineering plastics, there is still a big gap in mechanical properties, heat resistance, friction and wear properties, etc. Therefore, improving the performance of PP by adding reinforcements has always been a research hotspot in the academic and industrial circles. Fiber-reinforced composite materials have the following advantages: high specific strength, large specific modulus, designable material properties, good corrosion resistance and durability. These characterist...

Claims

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Application Information

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IPC IPC(8): C08J5/06C08L23/12C08K9/04C08K9/02C08K7/10
CPCC08J5/06C08J2323/12C08K9/04C08K9/02C08K7/10C08K2201/005C08K2201/004
Inventor 韩锐王晓荣李光照陈刚郑浪王中最
Owner XIHUA UNIV
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