Epoxy powder for packaging medium-low-voltage bus bar

A technology of epoxy powder and low-voltage busbar, which is applied in the field of packaging materials, can solve the problems of not being able to meet environmental protection and flame retardancy at the same time, unfavorable cost saving, long curing time, etc., achieve fluidized state effect and excellent durability of use, and filler Reasonable particle size matching and short curing time

Inactive Publication Date: 2015-02-18
JIANGSU ZHONGPENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology related to epoxy powder used in the domestic cable packaging started relatively late, and there are still many technical problems that have hindered its development. Among them, the fatal flaw is that it cannot meet the requirements of both environmental protection and excellent flame retardancy; in addition The curing time of epoxy powder is relativ

Method used

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  • Epoxy powder for packaging medium-low-voltage bus bar
  • Epoxy powder for packaging medium-low-voltage bus bar
  • Epoxy powder for packaging medium-low-voltage bus bar

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] The method for synthesizing the phosphorus-containing silicon-containing polyurethane epoxy resin includes the following steps: firstly use a reactive phosphorus compound and an organic silicon resin to react with an isocyanate to obtain a phosphorus-containing silicon-containing polyurethane prepolymer with an isocyanate end group , And then use the reaction of isocyanate and epoxy resin to introduce the prepolymer into the molecular chain of epoxy resin to obtain a polyurethane epoxy resin containing phosphorus and silicon at the same time.

[0038] It includes the following steps:

[0039] (1) Under the protection of nitrogen, add isocyanate and catalyst to the reactor with heating device, stirrer and thermometer, heat up to 50~150℃, stir to make isocyanate and catalyst mix uniformly;

[0040] (2) Under stirring, slowly add the reactive phosphorus-containing compound to the reaction kettle in (1), and keep it warm for 1~8h;

[0041] (3) After the above reaction is over, slow...

Example Embodiment

[0109] Example 1

[0110] (1) First crush the raw materials to be crushed with a crusher;

[0111] (2) The raw materials are baked and dried separately, and then set aside;

[0112] (3) Weigh the filler and coupling agent according to the weight in Table 1, 25 kg of silica powder DRG800, 0.5 kg of coupling agent SG-TPT, put them into a stainless steel mixer and mix vigorously for 10 minutes, then surface modification of the filler;

[0113] (4) Combination of phosphorus-containing silicon-containing polyurethane epoxy resin A 40kg, curing agent KD402 20kg, toughening agent MBS 2.5kg, flame retardant aluminum hydroxide 0.5 kg, curing accelerator triphenylphosphine and imidazole 0.5kg, leveling agent GLP503 0.5kg, anti-scratch agent carnauba wax 0.5kg, pigment phthalocyanine blue 0.5kg, weighed according to the amount, put into a stainless steel mixer, and mixed vigorously for 10 minutes until uniform;

[0114] (5) Melt, knead and extrude the mixed raw materials with a screw extruder at ...

Example Embodiment

[0117] Example 2

[0118] The epoxy powder was prepared according to the steps described in Example 1, the components and their added amounts are shown in Table 1, and the inspection performance of the product is shown in Table 2.

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Abstract

The invention discloses epoxy powder for packaging a medium-low-voltage bus bar and belongs to the technical field of epoxy powder coating. The epoxy powder comprises common epoxy resin, phosphorus-containing and silicon-containing polyurethane-type epoxy resin, a curing agent, silica micro-powder, an outer flame retardant, a toughening agent, a curing accelerator, a pigment and other substances. According to the epoxy powder, the phosphorus-containing and silicon-containing polyurethane-type epoxy resin is synthesized by isocyanate, a reactive phosphorus-containing compound and organic silicone resin and applied on epoxy powder so as to solve the problems of environmental friendliness and flame retardancy. The epoxy powder prepared by the invention has the characteristics of fast curing and excellent thermal cycle impact resistance, voltage resistance and insulation property and has broad application prospects in the field of medium-low-voltage bus bar packaging.

Description

technical field [0001] The invention relates to an encapsulation material, in particular to an epoxy powder for encapsulation of medium and low voltage busbars. Background technique [0002] Medium and low voltage line bars are widely used in people's lives, but most of the bus bars are basically exposed outside, and there are many potential safety hazards. In foreign countries, due to the excellent insulation performance of epoxy powder, it has attracted people's attention, and the encapsulation of wire rows has been gradually completed. The encapsulated wire row has many advantages, such as the small inductance between the wire rows, which can reduce the space between the wire rows and save space, and can also reduce the probability of electric shock. The technology related to epoxy powder used in the domestic cable packaging started relatively late, and there are still many technical problems that have hindered its development. Among them, the fatal flaw is that it canno...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L75/04C08K9/06C08K9/04C08K3/36C08G18/66C08G18/58C08G18/61C08G18/32
Inventor 封其立刘连兵周佃香王宝总王松松顾华龙
Owner JIANGSU ZHONGPENG NEW MATERIAL
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