Toughened thermosetting resin and its preparation method

A thermosetting and resin technology, applied in the field of rubber toughened thermosetting resin and its preparation, can solve the problems such as the decrease of heat resistance and strength of thermosetting resin, unsatisfactory toughening effect, and high process control requirements, and achieve vitrification. The effect of temperature increase, obvious toughening effect and simple operation process

Inactive Publication Date: 2003-04-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when using the prior art to toughen the thermosetting resin, the selection of the rubber phase is greatly limited, the requirements for process control are also very high, and the operation is more complicated; (2) the molecular structure of the rubber must contain a compound that can react with the matrix resin. Active groups in order to produce chemical bonds or good compatibility between the rubber phase and the matrix, in order to achieve a certain toughening effect
(3) To achieve a certain toughening effect, generally the amount of rubber is large, which will lead to a decrease in the heat resistance and strength of the thermosetting resin
Although this system helps to improve heat resistance, the toughening effect is not very ideal

Method used

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  • Toughened thermosetting resin and its preparation method
  • Toughened thermosetting resin and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 24 grams of epoxy resin (produced by Wuxi Resin Factory, trade name: E-44), premix (NMRT-1) (self-made) of epoxy resin prepolymer and rubber particles, 43.2 grams, 45 grams of methyl tetra Hydrophthalic anhydride (Zhejiang Jiaxing Dongfang Chemical Plant) was put into a three-necked flask, heated in a constant temperature water bath at 90°C, stirred and mixed for 30 minutes, added 0.9 g of triethanolamine (Jiamusi Petrochemical Plant), stirred and evacuated for 5 minutes, and then The mixture was poured into a polytetrafluoroethylene mold preheated to 130°C, pre-cured at 130°C for 1 hour, cooled and demolded, and post-cured at 110°C for 16 hours to obtain a product, and various properties were tested. The test results are shown in Table 1. The transmission electron microscope photograph of the sample is attached figure 1 , the shaded part in the figure is the rubber particles dispersed in the thermosetting resin matrix, with an average particle size of about 90nm...

Embodiment 2

[0022] Change the consumption of epoxy resin and NMRT-1 into 48 grams and 14.4 grams respectively, all the other conditions are with embodiment 1, test result is shown in Table 1.

Embodiment 3

[0024] Change the consumption of epoxy resin and NMRT-1 into 36 grams and 28.8 grams respectively, all the other conditions are the same as Example 1, and the test results are shown in Table 1.

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Abstract

The toughened thermosetting resin contains thermosetting resin and rubber granules whose mean grain size is 20-500 nm. Said resin is obtained by mixing the fully-vulcanized powder rubber whose mean grain size is 20-500 nm and thermosetting resin prepolymer and making their mixture undergo the process of solidification treatment. Said resin possesses obvious toughened effect, excellent impact resistance and high strength, modulus and heat resistance.

Description

technical field [0001] The invention relates to a toughened thermosetting resin, more specifically, to a rubber-toughened thermosetting resin and a preparation method thereof. Background technique [0002] Thermosetting resins and thermoplastic resins together constitute the two major systems of synthetic resins. Thermosetting resins are often liquid or soluble and fusible in the early stage of manufacturing or processing, and can be chemically changed by heating, catalysis or other methods (such as ultraviolet rays, rays, etc.) to cross-link into an insoluble and infusible three-dimensional network structure resin. Thermosetting resins include epoxy resins, unsaturated polyesters, phenolic resins, amino resins, alkyd resins, diallyl phthalate and silicone resins. Among them, epoxy resin and unsaturated polyester are the two largest and most representative thermosetting resins. Compared with thermoplastic resins, thermosetting resins have good heat resistance, high hardne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/22C08G59/18C08L19/00C08L61/06C08L63/00C08L67/06C08L83/04C08L101/00
CPCC08L19/003C08L67/06C08L61/06C08G77/04C08L63/00C08L83/04C08L2666/08C08L2666/04
Inventor 黄帆乔金梁刘轶群张晓红高建明宋志海
Owner CHINA PETROLEUM & CHEM CORP
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