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Epoxy potting resin for bus ducts, and preparation method and application thereof

An epoxy resin and busbar technology, applied in the direction of epoxy resin glue, adhesive type, polyurea/polyurethane adhesive, etc. flammability, good insulation, and stable production quality

Active Publication Date: 2014-04-23
宜兴市普利泰电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are some such potting materials at home and abroad, their performance cannot meet the diverse requirements in practical applications, and cracking problems often occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Materials: Polypropylene Glycol 400, Epichlorohydrin, Benzyltriethylammonium Chloride, 48% Sodium Hydroxide, Toluene, Soda Ash

[0028] Proportion: polypropylene glycol 400 1ml

[0029] Epichlorohydrin 2.1ml

[0030] 48% sodium hydroxide solution 2.2ml

[0031] Catalyst: 0.2% by mass of polypropylene glycol

[0032] Toluene: twice the weight of epichlorohydrin

[0033] Soda ash: 0.2ml

[0034] Process: Put the polypropylene glycol into the reaction kettle, add the catalyst to stir, add 50% of the formula amount of toluene, raise the temperature to 50°C and add epichlorohydrin dropwise, the temperature is controlled at 50-55°C, and the dropwise addition is completed at 65-70°C Insulate for 3 hours, drop the temperature to 45°C and add sodium hydroxide dropwise, the first dropwise addition of 85% of the total mass of sodium hydroxide, the temperature is controlled at 45-50°C, after the dropwise addition, keep at 50°C for 1.5 hours, stand still for 30 minutes and put sal...

Embodiment 2

[0041] Embodiment 2 The preparation of synthetic aniline resin curing agent

[0042] Aniline: 100kg

[0043] Lactic acid: 20kg

[0044] Benzenesulfonic acid: 36kg

[0045] POM: 125kg

[0046] Add aniline, lactic acid, and benzenesulfonic acid to the reaction kettle, raise the temperature to 80°C, add polyoxymethylene at a rate of 5kg in 5 minutes, heat up to 90-98°C and reflux for two hours after adding, heat up to 120°C for vacuum dehydration, (vacuum temperature at -0.098MPa) until there is no fraction, cooled to 60°C and filtered to obtain a synthetic aniline resin sample.

[0047] Viscosity mpa.s25℃ 120~200

[0048] Amine value koH / g 480~520

Embodiment 3

[0050] (1) Preparation of material A:

[0051] Formula: E-51 type epoxy resin: 85Kg, K-type polyurethane (selected from Yantai Wanhua): 15Kg, catalyst: o-cresol (Southeast Chemical Industry): 0.25Kg, active toughening agent (prepared in Example 1) 20Kg, 600 mesh alumina: 30Kg, 400 mesh aluminum hydroxide: 80Kg, decabromodiphenylethane: 30Kg, antimony trioxide: 10Kg, short glass fiber: 10Kg, defoamer: 0.25Kg, coupling agent (KH- 560): 1.5Kg, anti-settling agent (fumed silica): 6Kg.

[0052] Production process: pump E-51 type epoxy resin and K type polyurethane into the reaction kettle, start stirring (75-90 rpm), heat up to 120°C, add catalyst, heat up to 180°C while stirring, and keep warm for 2 hours , cooled to 50°C, adding filler 600 mesh alumina, 400 mesh aluminum hydroxide, decabromodiphenylethane, antimony trioxide, short glass fiber, defoamer, coupling agent (KH-560), Anti-sedimentation agent (fumed silica) is added while stirring (speed: 75 rpm), and the addition is ...

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Abstract

The invention discloses an epoxy potting resin for bus ducts, and a preparation method and application thereof. The epoxy potting resin for bus ducts is formed by curing a material A and a material B in a mass ratio of 100:(20-40), wherein the material A comprises E-51 epoxy resin, K-type polyurethane, a catalyst, an active toughener, 600-mesh aluminum oxide, 400-mesh aluminum hydroxide, decabromodiphenylethane, antimony trioxide, short glass fiber, a defoaming agent, a coupling agent and an anti-settling agent; and the material B comprises synthetic aniline resin, polyether, furfuryl alcohol, a curing agent and an acidic accelerator. The crosslinking modification of the epoxy resin and polyurethane, the synthesis of the special toughening diluter and special curing agent, the matching of the related filler and other technologies are utilized, so that the product has favorable insulating property, cracking resistance to long-term variable working temperature, and excellent flame retardancy, thereby smoothly satisfying the related requirements for the bus ducts.

Description

technical field [0001] The invention belongs to the field of potting resin, and relates to an epoxy potting resin for bus ducts and a preparation method and application thereof. Background technique [0002] With the rapid development of China's economy, bus ducts suitable for automobile manufacturing, ship production, and construction fields are also increasing. Because this product is used for underwater, outdoor or building spaces for a long time, it has a certain effect on the epoxy resin that protects the outside. Higher requirements mainly require good insulation properties, cracking resistance to long-term working temperature changes, and excellent flame retardant properties. Although there are some such potting materials at home and abroad, their performance cannot meet the diverse requirements in practical applications, and cracking problems often occur. Contents of the invention [0003] The object of the present invention is to provide an epoxy potting resin fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/02C09J175/04C09J11/04C09J11/08C08G59/04C08G73/02
Inventor 庄雪峰
Owner 宜兴市普利泰电子材料有限公司
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