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Polypropylene composite material with high impact resistance and high bearing capacity and preparation method and application thereof

A composite material, polypropylene technology, applied in the field of polymer composite materials, can solve the problem of high usage of matrix resin, and achieve the effects of reducing usage, high performance indicators, and simple process flow

Pending Publication Date: 2020-05-19
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of matrix resin used in this material is relatively high, and the bearing capacity and toughness still need to be improved.

Method used

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  • Polypropylene composite material with high impact resistance and high bearing capacity and preparation method and application thereof
  • Polypropylene composite material with high impact resistance and high bearing capacity and preparation method and application thereof
  • Polypropylene composite material with high impact resistance and high bearing capacity and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of the high-impact, high-load-bearing polypropylene composite material described in embodiment one may further comprise the steps:

[0034] Step 1, using a silane coupling agent to carry out surface modification treatment on the filler and the reinforcing fiber, the surface modification method of the modified filler is: adding the silane coupling agent diluted with absolute ethanol to the talcum powder , the amount of silane coupling agent added is 0.8% to 1% of the mass of talcum powder, the mass ratio of absolute ethanol to silane coupling agent is 9:1, stir and mix evenly in a high-speed mixer, and the mixing time is 10 minutes; the modified The surface modification method of the reinforced fiber is as follows: add the silane coupling agent diluted with absolute ethanol to the wollastonite fiber, the amount of the silane coupling agent added is 0.8-1% of the wollastonite fiber mass, anhydrous The mass ratio of ethanol to silane coupling agent i...

Embodiment 6

[0039] Embodiment 6, mechanical performance test.

[0040] A. Tensile property test, carry out tensile property test to the composite material of embodiment 1 to embodiment 5, take single polypropylene material as control group, first composite material and control group are prepared into according to GB / T1040.2-2006 standard For standard splines, the pulling rate is set to 50mm / min. The tensile performance test of the composite material was carried out on a computer-controlled universal tensile testing machine. The tensile strength and elongation at break of the composite material could be obtained from the test. The results are shown in Table 4.

[0041] The composite material of table 4 embodiment one to embodiment five and the tensile strength (MPa) of control group

[0042]

[0043]Referring to Table 4, according to the average value of the tensile strength measurement data, it can be seen that in the composite materials prepared by adding different wollastonite fiber...

Embodiment 8

[0053] Embodiment 8, the composite materials of Embodiment 2 and Embodiment 3 were analyzed by scanning electron microscope respectively.

[0054] The cold and brittle section obtained by breaking the composite materials of Example 2 and Example 3 after cooling with liquid nitrogen, observed the structure and morphology of the section under the JSM-6460LV scanning electron microscope of JEOL Ltd., and the morphological structure presented in the microscopic The difference between the filler and the dispersion state of the filler in the polypropylene resin, because each part of the composite material is not conductive, so before putting it into the scanning electron microscope for observation, the sample should be gold-plated first, so that the composite material The surface is conductive, and then the cross-section of the composite material is scanned under an electron microscope to obtain SEM images of the composite material under different formulations. For the results, see ...

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Abstract

The invention discloses a polypropylene composite material with high impact resistance and high bearing capacity, which is prepared from a raw material composition, and the raw material composition comprises the following components in parts by weight: 100 parts of polypropylene, 5-20 parts of modified filler and 5-45 parts of modified reinforced fibers; and the modified filler and the modified reinforced fibers are subjected to surface modification treatment by adopting a silane coupling agent. The use of matrix resin can be reduced, higher performance indexes are achieved, high bearing capacity and high toughness are achieved, and the product is bright in color and luster and low in cost. The invention further discloses a preparation method and application of the polypropylene compositematerial with high impact resistance and high bearing capacity.

Description

technical field [0001] The invention relates to a polymer composite material, in particular to a high-impact, high-load-bearing polypropylene composite material, a preparation method and an application. Background technique [0002] A plastic pallet is a logistics unit that is used in conjunction with logistics equipment such as forklifts and shelves. Pallets have been widely used in the fields of production, transportation, warehousing and circulation, and are one of the essential logistics equipment in modern logistics warehousing. A preliminary investigation by the Pallet Professional Committee of the China Federation of Logistics and Purchasing shows that China now has about 50 million to 70 million pallets of various types, and the annual output is increasing by about 20 million. Among them, wooden flat pallets account for about 90%, plastic flat pallets account for 8%, steel pallets, composite material pallets and paper pallets account for 2% in total. Composite mate...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K13/06C08K9/06C08K7/10C08K7/06C08K3/34C08K3/26
CPCC08K13/06C08K9/06C08K7/10C08K7/06C08K3/34C08K3/26C08K3/346C08K2003/265C08K2201/014C08K2201/011C08L23/12
Inventor 王选伦周宴宇孟丽丽谢惠
Owner CHONGQING UNIV OF TECH
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