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Preparation process of embedded co-cured damping composite T-stiffened plate

A technology of damping composite materials and damping materials, which is applied in the field of damping functional composite materials, can solve the problems of loss of bearing capacity, low co-curing temperature, and easy aging of damping materials, and achieve excellent dynamic performance and improve dynamic performance. Effect

Active Publication Date: 2020-12-04
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, although Zheng Changsheng disclosed the low-temperature co-curing process of phenolic resin in the article "Low Temperature Co-curing High Damping Composite Material", the present invention believes that this kind of composite material can be used for a long time under higher temperature conditions due to the relatively low co-curing temperature ( For example, when the temperature is greater than 90 degrees), the damping material is easy to return to the original aging and lose its bearing capacity, which limits the scope of use of this composite material to a certain extent.

Method used

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  • Preparation process of embedded co-cured damping composite T-stiffened plate
  • Preparation process of embedded co-cured damping composite T-stiffened plate
  • Preparation process of embedded co-cured damping composite T-stiffened plate

Examples

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Effect test

Embodiment 1

[0074] 1. An aminophenol-formaldehyde resin-based medium-temperature co-cured viscoelastic damping material, the viscoelastic damping material comprising the following raw materials in parts by mass:

[0075] 93 parts of nitrile rubber; 7 parts of neoprene; 4.5 parts of zinc oxide; 4 parts of magnesium oxide; 1.2 parts of stearic acid; 40 parts of carbon black; 1.2 parts of antioxidant RD; 0.8 parts of antioxidant 1010; parts; sulfur 1 part.

[0076] The role of MgO: Magnesium oxide is used as a vulcanizing agent in chloroprene rubber, reducing the activity of zinc oxide to slow down the vulcanization rate and prevent early crosslinking; at the same time, magnesium oxide acts as an acid acceptor to prevent scorching and Cyclization is usually added at the initial stage of mixing; it can improve the scorch performance of the rubber compound and help the storage of the mixed rubber; it can improve the tensile strength and hardness of the vulcanized rubber.

[0077] Antioxidant ...

Embodiment 2

[0096] 1. An aminophenol-formaldehyde resin-based viscoelastic damping material co-cured at medium temperature. The viscoelastic damping material comprises the following raw materials in parts by mass: 95 parts of nitrile rubber; 5 parts of neoprene rubber; 4 parts of zinc oxide; 4.5 parts of magnesium oxide 1.0 parts of stearic acid; 38 parts of carbon black; 1.5 parts of antioxidant RD; 1 part of antioxidant 1010; 3 parts of SP1045 resin; 0.8 parts of sulfur.

[0097] The role of MgO: Magnesium oxide is used as a vulcanizing agent in chloroprene rubber, reducing the activity of zinc oxide to slow down the vulcanization rate and prevent early crosslinking; at the same time, magnesium oxide acts as an acid acceptor to prevent scorching and Cyclization is usually added at the initial stage of mixing; it can improve the scorch performance of the rubber compound and help the storage of the mixed rubber; it can improve the tensile strength and hardness of the vulcanized rubber.

...

Embodiment 3

[0111] 1. A viscoelastic damping material co-cured with aminophenol-formaldehyde resin at medium temperature. The viscoelastic damping material comprises the following raw materials in parts by mass: 90 parts of nitrile rubber; 10 parts of chloroprene rubber; 6 parts of zinc oxide; 3.5 parts of magnesium oxide 0.8 parts of stearic acid; 42 parts of carbon black; 1 part of antioxidant RD; 0.5 part of antioxidant 1010; 6 parts of SP1045 resin; 1.2 parts of sulfur.

[0112] 2. The preparation method of the aminophenol-formaldehyde resin-based medium-temperature co-cured viscoelastic damping material in this embodiment includes the following steps:

[0113] (1) For plasticizing of raw rubber, first put nitrile rubber and neoprene into a double-roller open mill for plasticating, and rely on the shear force of the two rollers to tear apart the long molecular chains of the raw rubber, so that It obtains a certain degree of plasticity, and then appropriately reduces the roller distanc...

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Abstract

The invention relates to a preparation process of embedded type co-cured damping composite T-shaped stiffener plates. The preparation process mainly comprises the steps of firstly, producing damping adhesive cement, and applying the adhesive cement to composite prepreg through a double-face brushing method, so that a damping composite panel pre-formed body is obtained; meanwhile, designing a cuboidal mold, and laying the composite prepreg on the cuboidal mold, so that a composite rib pre-formed body is obtained; then, laying another type of composite prepreg on a plane mold, so that a composite rib plate lower edge pre-formed body is obtained; conducting curing and co-curing on the damping composite panel pre-formed body, the composite rib pre-formed body and the composite rib plate loweredge pre-formed body, and finally, bonding T-shaped ribs and rib plate lower edges to a damping composite panel, so that the embedded type co-cured damping composite T-shaped stiffener plate is obtained.

Description

technical field [0001] The invention belongs to the technical field of damping functional composite materials, and in particular relates to a manufacturing process of an embedded co-cured damping composite T-shaped stiffened plate. Background technique [0002] With the development of science and technology, people have higher and higher requirements for the performance of materials and structures, not only requiring materials to meet the requirements of mechanical properties, but also requiring them to have special functions. Embedded Co-cured Damping Composite Structure with Stiffener Plates (ECDCSSP) adds T-shaped ribs to the structure of embedded co-cured damping composite materials, retaining the high damping of the original structure It can greatly enhance the bending stiffness of the whole structure while having the advantages of performance. It has a wide range of applications in many fields such as aerospace and ship engineering. At present, the research on embedded...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/44B29C70/54B29B7/56B29B7/72C08L9/02C08L11/00C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06
Inventor 梁森闫云鹏梁克垚郑长升
Owner QINGDAO TECHNOLOGICAL UNIVERSITY