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Phenolic resin and fiber interface shear strength test method, sample preparation method and sample

A technology of interfacial shear strength and phenolic resin, which is applied in the direction of applying stable shear force to test the strength of materials and the preparation of test samples, which can solve the problems of large dispersion of test data and meet the requirements of equipment with low performance and easy operation. The effect of simplicity and simple sample preparation method

Active Publication Date: 2021-07-13
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since the curing reaction of phenolic resin belongs to dehydration condensation, a large amount of small molecule water will inevitably be produced in the whole process, resulting in the internal porosity of the composite material. When the composite material interlaminar shear test method is used to indirectly evaluate the interface between phenolic resin and fiber During the performance, due to the possible defects of the sample (composite material), the test data data is scattered and other problems

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  • Phenolic resin and fiber interface shear strength test method, sample preparation method and sample
  • Phenolic resin and fiber interface shear strength test method, sample preparation method and sample
  • Phenolic resin and fiber interface shear strength test method, sample preparation method and sample

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Embodiment 1

[0055] The embodiment of the present invention provides a kind of sample preparation method of phenolic resin and fiber interface shear strength test, and its preparation method comprises the following steps:

[0056] (1), a, making such as figure 1 The shown YZAlSi10Mg aluminum alloy plate-shaped sample carrier, wherein the sample carrier has a uniform thickness (1.5mm), the length of the body 1 of the carrier is 65mm, and the height is 12mm. The first protrusion 2 and The second protrusions 3 have the same shape, with a height of 13 mm and a width of 17.5 mm;

[0057] B, barium phenolic resin and ethanol are mixed according to the ratio of 1.5:1 according to mass ratio, obtain phenolic resin solution, described phenolic resin solution formaldehyde-phenol ratio 1.5, solid content 50% (GJB1059.1), gel time 193s (GJB1059 .4), free phenol content is less than 25% (GJB1059.3), rotational viscosity 52mPa·s (GJB1059.2);

[0058] (2), the two ends of the carbon fiber monofilament ...

Embodiment 2

[0062] The embodiment of the present invention provides a kind of sample preparation method of phenolic resin and fiber interface shear strength test, and its preparation method comprises the following steps:

[0063] (1), a, making such as figure 1 The shown YZAlSi10Mg aluminum alloy plate-shaped sample carrier, wherein the sample carrier has a uniform thickness (1.5mm), the length of the body 1 of the carrier is 65mm, and the height is 12mm. The first protrusion 2 and The second protrusions 3 have the same shape, with a height of 13 mm and a width of 17.5 mm;

[0064] B, barium phenolic resin and ethanol are mixed according to the ratio of 0.5:1 according to mass ratio, obtain phenolic resin solution, described phenolic resin solution formaldehyde-phenol ratio 1.1, solid content 25% (GJB1059.1), gel time 112s (GJB1059 .4), free phenol content is less than 25% (GJB1059.3), rotational viscosity 96mPa·s (GJB1059.2).

[0065] (2), the two ends of the carbon fiber monofilament ...

Embodiment 3

[0069] The embodiment of the present invention provides a kind of sample preparation method of phenolic resin and fiber interface shear strength test, and its preparation method comprises the following steps:

[0070] (1), a, making such as figure 1 The shown YZAlSi10Mg aluminum alloy plate-shaped sample carrier, wherein the sample carrier has a uniform thickness (1.5mm), the length of the body 1 of the carrier is 65mm, and the height is 12mm. The first protrusion 2 and The second protrusions 3 have the same shape, with a height of 13 mm and a width of 17.5 mm;

[0071] b, barium phenolic resin and ethanol are mixed according to the ratio of 2.5:1 according to mass ratio, obtain phenolic resin solution, described phenolic resin solution formaldehyde-phenol ratio 2.0, solid content 75% (GJB1059.1), gel time 285s (GJB1059 .4), free phenol content is less than 25% (GJB1059.3), rotational viscosity 22mPa·s (GJB1059.2).

[0072] (2), the two ends of the carbon fiber monofilament ...

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Abstract

The invention relates to a method for testing the shear strength of a phenolic resin-fiber interface, a sample preparation method and a sample, and belongs to the technical field of composite material testing. The sample preparation method includes: making a sample carrier and a phenolic resin solution, wherein the sample carrier is a concave-shaped sheet structure, including a body and a direction perpendicular to the body from both ends of the body. The extended first protrusion and the second protrusion; the two ends of the monofilament fiber are respectively fixed on the first protrusion and the second protrusion, and the middle part of the monofilament fiber is suspended from the first protrusion Between the protrusion and the second protrusion, the monofilament fiber is in a taut state; dip the phenolic resin solution with a needle point, and use the dipped phenolic resin solution to carry out a single coating along the length direction of the monofilament fiber Covered and then cured to obtain test specimens. The sample prepared by the invention has no defects, and the dispersion degree of test data is low.

Description

technical field [0001] The invention relates to a method for testing the shear strength of a phenolic resin-fiber interface, a sample preparation method and a sample, and belongs to the technical field of composite material testing. Background technique [0002] Fiber-reinforced resin-based composites are composed of a resin matrix, a fiber reinforcement and an interface phase between the two. The matrix mainly plays the role of connecting the reinforcement and transmitting the load, the reinforcement mainly plays the role of carrying the load, and the interface phase, as another important microstructure of the composite material, not only plays the role of connecting the matrix and the reinforcement, but also acts as an external load bearing. An important hub from the matrix phase to the reinforcement phase, with transfer effects, blocking effects, discontinuous effects, and induction effects. It has been reported in the literature that the internal damage, crack propagati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24G01N1/28
CPCG01N1/28G01N3/24
Inventor 胡宏林王伟张晨余瑞莲
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH