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Composite material containing epoxidized hydroxyl-terminated polybutadiene and preparation method thereof

A technology of hydroxyl-terminated polybutadiene and composite materials, applied in the field of resin ceramic composite materials, can solve the problems of short pot life, poor fluidity, easy cracking and the like

Pending Publication Date: 2021-05-18
洛阳嘉斯诺泵业制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resin casting system with high ceramic particle content often has poor fluidity, and bubbles and defects are prone to appear during the casting process.
For large castings, the pot life and curing conditions of the resin system are the key factors for the success of the pouring process. The commonly used curing pouring system often gels and solidifies before the pouring is completed due to its short pot life.
In addition, there are large internal stresses in the molding process of large castings, which are prone to cracking during molding and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Prepare the resin-ceramic composite material containing epoxidized hydroxyl-terminated polybutadiene according to the following steps, and the proportions of materials added are all mass fractions:

[0043] (1) Preparation of epoxy resin components: Add 60 parts of bisphenol F epoxy resin (DGEBF) NPEL-170 and 5 parts of epoxy reactive diluent cardanol glycidyl ether Cardolite NC-513 into the reaction kettle, at 95 °C Heat preservation and stirring reaction 2h, obtain epoxy resin component;

[0044] (2) Preparation of curing agent components: Add 77 parts of curing agent tetrahydrophthalic anhydride into the reaction kettle, raise the temperature to 80°C, and then drop 1 part of curing accelerator 2,4,6-tri (Dimethylaminomethyl)phenol, after the dropwise addition, keep stirring at 80°C for 1.5h to obtain the curing agent component;

[0045] (3) Ceramic filler pretreatment: 460 parts of silicon carbide F14, 200 parts of silicon carbide F30, 75 parts of brown corundum F50...

Embodiment 2

[0063] Prepare the resin-ceramic composite material containing epoxidized hydroxyl-terminated polybutadiene according to the following steps, and the proportions of materials added are all mass fractions:

[0064] (1) Preparation of epoxy resin components: Add 66 parts of novolac epoxy resin F-51 and 6 parts of epoxy reactive diluent cardanol glycidyl ether Cardolite NC-513 into the reaction kettle, keep stirring at 95°C for 2 hours, Obtain epoxy resin component;

[0065] (2) Preparation of curing agent components: Add 79 parts of hydrogenated methyl nadic anhydride and curing agent into the reaction kettle, raise the temperature to 80°C, and then add 1 part of curing accelerator 2-methylimidazole dropwise under stirring. After the dropwise addition, keep stirring at 80°C for 1.5 hours to obtain the curing agent component;

[0066] (3) Ceramic filler pretreatment: premix 550 parts of silicon carbide F14, 200 parts of silicon carbide F30, 80 parts of brown corundum F500 and 16...

Embodiment 3

[0084] Prepare the resin-ceramic composite material containing epoxidized hydroxyl-terminated polybutadiene according to the following steps, and the proportions of materials added are all mass fractions:

[0085] (1) Preparation of epoxy resin components: 30 parts of bisphenol F epoxy resin (DGEBF) NPEL-170, 50 parts of novolac epoxy resin F-51 and 8 parts of epoxy reactive diluent cardanol glycidyl ether Cardolite NC Add -513 into the reaction kettle, heat and stir at 95°C for 2 hours to obtain the epoxy resin component;

[0086] (2) Preparation of curing agent components: Add 90 parts of curing agent and methylnadic anhydride into the reaction kettle, raise the temperature to 80°C, and then add 1 part of curing accelerator 2-ethyl-4- Methylimidazole, after the dropwise addition, keep stirring at 80°C for 1.5h to obtain the curing agent component;

[0087] (3) Ceramic filler pretreatment: premix 610 parts of silicon carbide F14, 300 parts of silicon carbide F30, 80 parts of...

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Abstract

The invention relates to a composite material containing epoxidized hydroxyl-terminated polybutadiene and a preparation method thereof, the composite material comprises a filler and an adhesive, the filler is based on large-particle-size silicon carbide, a fine-particle-size wear-resistant oxide is added, epoxy resin is used as a main adhesive, and the composite material with high bulk density is formed. In the preparation process, vacuum stirring and mixing are adopted, and a vacuum pouring and high-frequency vibration process is adopted during mold pouring, so that the stacking density of the filler is further improved. By adding epoxidized hydroxyl-terminated polybutadiene, the impact toughness and hydrophobicity of the composite material are improved. The prepared composite material is high in ceramic content, low in porosity, good in toughness and high in acid corrosion resistance, has excellent wear resistance and acid medium corrosion resistance, is suitable for large flow passage components of transmission equipment in various engineering fields, and is particularly suitable for being used as flow passage components of acid media.

Description

technical field [0001] The invention relates to a resin ceramic composite material, in particular to a resin ceramic composite material containing epoxy-terminated hydroxyl polybutadiene and a preparation method thereof. Background technique [0002] Various medium transmission equipment are widely used in mining, thermal power, chemical industry and water conservancy engineering and other fields. The transmission medium is not only various liquids, but in many cases the transmission medium is a mixture of liquid and solid. These media not only contain a large number of hard solid particles, but also often contain various acidic substances. Therefore, it is required that the flow-passing parts (such as pump casing, impeller, etc.) of the medium transmission equipment should have good wear resistance and corrosion resistance at the same time. [0003] At present, the flow-passing parts of the medium transmission equipment are mainly made of high-chromium alloy materials, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L15/00C08K3/34C08K3/22C08G59/42C08G59/68
CPCC08L63/00C08G59/4215C08G59/686C08K2003/2227C08K2201/014C08L15/00C08K3/34C08K3/22
Inventor 王自新蒋纪伦蒋静杰张朝选
Owner 洛阳嘉斯诺泵业制造有限公司
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