Quartz fiber reinforced thermosetting phenolic resin composite material for mould pressing and preparation method of quartz fiber reinforced thermosetting phenolic resin composite material

A technology of phenolic resin and quartz fiber, which is applied in the field of quartz fiber reinforced thermosetting phenolic resin composite materials for molding and its preparation field, which can solve the problem of reduced performance and strength of molding materials, failure to meet the mechanical performance requirements of molded parts, and the mechanical properties of thermosetting phenolic resin. Poor performance and other problems, achieve the effect of shortening the curing time, good molding, and reducing the content of free phenol

Pending Publication Date: 2022-03-04
SHANDONG NORTH MODERN CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] First of all, the requirements of adhesiveness, fluidity and free phenol content cannot be met at the same time. For thermosetting phenolic resins, the smaller the viscosity, the better the fluidity and the better the formability, but the smaller the viscosity, the lower the mechanical properties of thermosetting phenolic resins. It is poor and cannot meet the mechanical performance requirements of molded parts; in addition, the existing thermosetting phenolic resin molding materials cannot maintain the inherent mechanical properties of the material in a long-term high-temperature state or high-frequency environment;
[0006] Secondly, the free phenol content of the existing high-strength thermosetting phenolic resin is about 15%. If the redu

Method used

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  • Quartz fiber reinforced thermosetting phenolic resin composite material for mould pressing and preparation method of quartz fiber reinforced thermosetting phenolic resin composite material
  • Quartz fiber reinforced thermosetting phenolic resin composite material for mould pressing and preparation method of quartz fiber reinforced thermosetting phenolic resin composite material

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Example Embodiment

[0037] Example 1

[0038] A quartz fiber reinforced thermosetting phenolic resin composite material for molding, which is composed of the following raw materials: epoxy resin modified thermosetting phenolic resin 35kg, quartz fiber 55kg, ultra-fine alumina 4kg, silane coupling agent 1kg, polyethylene glycol 0.5kg and butanol 5kg;

[0039] The epoxy resin modified thermosetting phenolic resin is prepared according to the following steps:

[0040] 1. 40kg of phenol was added to the reactor, heated to 60°C under stirring, added 1.5kg of hydroxymethyl nylon, reacted at 70°C for 1 hour, added 1.2kg of light magnesium oxide and reacted for 0.5 hour, cooled to 55°C ℃, add 0.8kg aniline, react for 0.5 hour, add 30kg formaldehyde, be warming up to 85 DEG C and react for 0.5 hour, then add 15kg formaldehyde, continue to react for 1 hour to obtain a reaction solution; the obtained reaction solution is cooled to below 30 DEG C, and oxalic acid is added Adjust pH to 7 to obtain nylon mod...

Example Embodiment

[0042] Example 2

[0043] A quartz fiber reinforced thermosetting phenolic resin composite material for molding, which is composed of the following raw materials: 45 kg of epoxy resin modified thermosetting phenolic resin, 65 kg of quartz fiber, 8 kg of ultra-fine alumina, 2 kg of silane coupling agent, and 1.0 kg of polyethylene glycol and butanol 10kg;

[0044] The epoxy resin modified thermosetting phenolic resin is prepared according to the following steps:

[0045] 1. 50kg of phenol was added to the reactor, heated to 65°C under stirring, added 2.0kg of hydroxymethyl nylon, reacted at 80°C for 1 hour, added 1.5kg of light magnesium oxide and reacted for 1 hour, cooled to 65°C ℃, add 1.0kg aniline, react for 1 hour, add 36.7kg formaldehyde, be warming up to 105 DEG C and react for 1 hour, then add 18.3kg formaldehyde, continue to react for 2 hours to obtain a reaction solution; the obtained reaction solution is cooled to below 30 DEG C, added The oxalic acid was adjusted...

Example Embodiment

[0047] Example 3

[0048] A quartz fiber reinforced thermosetting phenolic resin composite material for molding, which is composed of the following raw materials: epoxy resin modified thermosetting phenolic resin 38kg, quartz fiber 58kg, ultra-fine alumina 5kg, silane coupling agent KH5501.2kg, polyethylene glycol 0.6kg and 6kg of butanol; the length of the quartz fiber is 20-30mm;

[0049] The quartz fiber is a quartz fiber pretreated with a silane coupling agent;

[0050] The epoxy resin modified thermosetting phenolic resin is prepared according to the following steps:

[0051] 1. 42kg of phenol was added to the reactor, heated to 62°C under stirring, added 1.6kg of hydroxymethyl nylon, reacted at 72°C for 45 minutes, added 1.3kg of light magnesium oxide and reacted for 45 minutes, cooled to 58°C ℃, add 0.9kg aniline, react for 45 minutes, add 32kg formaldehyde, be warming up to 90 DEG C and react for 45 minutes, then add 16kg formaldehyde, continue to react for 1.2 hours...

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Abstract

The invention discloses a quartz fiber reinforced thermosetting phenolic resin composite material for mould pressing and a preparation method thereof, and relates to the technical field of electric insulation composite materials, the quartz fiber reinforced thermosetting phenolic resin composite material comprises the following raw materials: epoxy resin modified thermosetting phenolic resin, quartz fiber, superfine aluminum oxide, a silane coupling agent, polyethylene glycol and first butanol; the quartz fiber reinforced thermosetting phenolic resin composite material for mould pressing is small in viscosity, good in forming and high in mechanical property, not only can meet the mechanical property requirement of a common formed part, but also can keep the inherent mechanical property of the material in a long-time high-temperature state or a high-frequency environment.

Description

technical field [0001] The invention relates to the technical field of electrical insulating composite materials, in particular to a quartz fiber reinforced thermosetting phenolic resin composite material for molding and a preparation method thereof. Background technique [0002] Composite materials for molding are more and more widely used. High-frequency circuit boards and low-expansion circuit boards for computers, and thermal insulation materials for high-temperature exhaust pipes of automobile and heavy-duty truck transmissions have not been suitable for molding due to their high requirements on temperature and insulation performance. Composite materials can meet their needs, because the existing composite materials for molding have the following problems in use: [0003] First, the high-frequency circuit boards and low-expansion circuit board materials used in computers will gradually deteriorate electrical insulation properties under the influence of long-term high te...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08L63/02C08K9/06C08K7/10C08J5/06C08G8/28C08G8/36
CPCC08J5/06C08G8/28C08G8/36C08J2361/14C08J2463/02C08K9/06C08K7/10
Inventor 胡学朝王桂伦袁森胡恂业赵平赵富国王见朋
Owner SHANDONG NORTH MODERN CHEM IND
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