Epoxy resin composition for solid-sealing pole and preparation method thereof
A technology of epoxy resin and solid-sealed poles, which is applied in the field of solid-sealed poles, can solve problems such as cracking and affecting the performance of solid-sealed poles, and achieve the effect of reducing the risk of cracking
Active Publication Date: 2019-03-22
GOODE EIS SUZHOU CORP LTD
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Problems solved by technology
[0004] However, in the actual production and application practice, it is found that the embedded poles cast by traditional epoxy resin often crack due to various reasons, which affects the performance of the embedded poles.
Method used
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Embodiment 1～3
[0028] Embodiments 1-3: Preparation of epoxy resin composition for embedding poles
[0029] According to the composition shown in Table 1 below, according to the following steps 1, 2 and 3, prepare the epoxy resin compositions for the embedded poles of Examples 1 to 3, wherein the epoxy resin used in step 1 is 128 Epoxy resin: The imidazole accelerator used in step 3 is 2-ethyl-4-methylimidazole, and the inorganic filler used is calcium silicate.
[0030] Table 1 Composition of epoxy resin compositions for embedded poles in Examples 1-3
[0031]
[0032] Step 1, preparing toughened epoxy resin: Add epoxy resin, reactive toughening agent and reactive diluent to the reaction vessel, stir at high speed at room temperature with a stirring speed of 2000r / min, mix evenly, and prepare toughened epoxy resin epoxy resin;
[0033] Step 2, preparation of toughening curing agent: Add acid anhydride A and small molecule toughening agent into the reactor, and react for 2 hours at a tem...
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Abstract
The invention provides an epoxy resin composition for a solid-sealed polar pole and a preparation method thereof. On the basis of the total weight of the epoxy resin composition for the solid-sealed polar pole, the composition is prepared from, by weight, 18%-22% of toughened epoxy resin, 15%-20% of toughened curing agents, 0.1%-0.25% of imidazole promoter and 60%-67% of inorganic fillers. According to the solid-sealed polar pole formed by pouring through the epoxy resin composition, the cracking problem of a solid-sealed polar pole formed by pouring through traditional epoxy resin can be well solved, and therefore the cracking risk of the solid-sealed polar pole is effectively reduced. The impact property and the impact strength of the cured epoxy resin composition are higher than those of traditional cured epoxy resin, and meanwhile compared with a puncture strength value of traditional epoxy resin, a puncture strength value of the epoxy resin composition is increased to about 27 kV / mm from 20 kV / mm.
Description
technical field [0001] The invention relates to the field of solidified poles, in particular to an epoxy resin composition for solidified poles and a preparation method thereof. Background technique [0002] Vacuum circuit breaker is an indoor power distribution device in 3-10kV, 50Hz three-phase AC power system. It can be used in industrial and mining enterprises, power plants, substations, etc. to protect or control electrical equipment. It is especially suitable for applications that require no oil and less Places where maintenance and operations are frequent. Vacuum circuit breakers have the advantages of small size, light weight, short arcing time, small contact opening distance, fast recovery speed, frequent operation, and no maintenance for arc extinguishing. The pole insulation of vacuum circuit breakers has experienced three generations of air insulation, composite insulation, and solid-seal insulation. Among them, the third generation of solid-sealed insulation i...
Claims
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IPC IPC(8): C08L63/00C08L71/08C08L9/02C08L9/00C08L75/04C08K5/3445C08K3/34C08K5/053
Inventor 孙建平王峰张小宾
Owner GOODE EIS SUZHOU CORP LTD