TWI242581B - Resin-sealed electronic electrical component and manufacture thereof - Google Patents

Abstract

This invention is to provide a non-halogen or non-antimony resin-sealed electronic electrical component which is high in flame-retardant properties, heat cycle durability, and high-temperature loading durability. A resin-sealed electronic electrical component is sealed with a flame-retardant coating layer (B) through the intermediary of a priming layer (A), where the flame-retardant coating layer (B) is formed by causing epoxy resin powder paint to be cured thermally, which contains at least a kind of flame retardant selected from among aluminum hydroxide, aluminum oxide hydrate, magnesium hydroxide, calcium aluminate hydrate, phosphorus flame retardant, and nitrogen flame retardant.

Description

1242581 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (1) Technical field to which the invention belongs The present invention is sealed with a resin composition having thermal cycle durability, high-temperature load durability, and flame resistance Electronic and electrical parts and manufacturing method thereof · 'More specifically, it relates to a heat cycle durability sealed with a resin composition that does not contain harmful substances such as halogen-based flame retardants or antimony-based flame retardants that cause environmental pollution. Resin-sealed electronic and electrical parts with high performance, high-temperature load durability, and flame resistance, and a method for manufacturing the same. Electronic and electrical parts such as ceramic capacitors, resistor networks, composite integrated circuits, inductor coils, etc. are generally made of thermosetting resin composition to impart moisture resistance, heat resistance, and chemical resistance. Sealed with an insulating sealant. However, this sealant is required to have excellent adhesion to semiconductor devices, flame resistance, moisture resistance, electrical reliability, and corrosion resistance, and it is easy to use a flow immersion method or an electrostatic flow immersion method. In order to form a specified layer thickness, powder coatings mainly composed of epoxy resin are mostly used. Therefore, as for powder coatings mainly containing oxygen-transporting resins, epoxy resins, polycarboxylic anhydride-based hardeners, triphenylphosphine, and inorganic fillers have been known to date (Japanese Patent Laid-Open 6 1 — 8 9 2 7 1) 〇 On the other hand, as for the insulating sealant, in order to prevent fire in the use of electronic and electrical parts, it is required to have flame resistance. It is common to use flame retardants for flame resistance. (Please read the Precautions on the back first &^; write this page) i-line installation · This paper size is applicable to China National Standard (CNS) A4 (210 x 297 mm) 4 1242581 A7 B7 V. Description of the invention (2) However Recently, halogen-based flame retardants have caused the destruction of the ozone layer, or harmful gases occurred during combustion and have caused environmental pollution. Their use is in a restricted direction, and antimony-based flame retardants have also been designated as wastewater environmental standards. It is expected that reduction of the amount of monitored substances will become a required item, and it is expected that these flame retardants can be replaced. As for epoxy resin-based electronic and electrical component sealants that do not contain halogen or antimony, so far, those who have used epoxy resins in epoxy resin compositions containing epoxy resins, hardeners, inorganic fillers and flame retardants have Is being proposed: those who use melamine phosphorous phosphate compounds, or red phosphorus compound users who are covered with phenolic resins and silane compounds or silane compounds (Japanese Patent Application Laid-Open No. 10-1 8 2 9 4 0) or An epoxy resin having two or more hydroxyoxy groups in one molecule, a compound having two or more hydroxy groups in one molecule, a cyclic phosphogen compound, and an inorganic filler are essential components. (Japanese Unexamined Patent Publication No. 10-259292). Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -------------- Installation ----- (Please read the precautions on the back ^^ |? Write this page) line. However, this For electronic and electrical parts sealants, even if they show similar performance to conventional halogen-based or antimony-based flame retardants at the point of flame resistance, the resin composition used in this case has durability in thermal cycling and high-temperature load durability. If the system is insufficient, the electronic and electrical parts obtained by using the composition cannot be said to have satisfactory performance. Lessons to be Solved by the Invention The present invention overcomes the use of non-conventional halogen-based or non-antimony-based flame retardants. Disadvantages of electronic and electrical parts of the sealant to provide Chinese papers (CNS) A4 specifications (210 X 297 mm) applicable to the size of the paper used • 5- 1242581 A7 B7 V. Description of the invention (3) Use of halogens In the case of flame retardants based on antimony or antimony, they are comparable in performance, that is, flame-resistant, heat-cycle durability, and high-temperature load durability, halogen- or antimony-free resin-sealed electronic and electrical parts for the purpose. Means of the invention In order to develop a resin-sealed electronic / electrical component using a non-halogen-based or antimony-based sealing agent, the result of careful research is that, first, the electronic / electrical component is not covered with a single type of sealing agent layer. Cover the surface of electronic and electrical parts with a superior pull-down layer with thermal cycle durability and high-temperature load durability, and then cover it with a layer with flame resistance. It was found that flame resistance was obtained, and it also had thermal cycle durability. Based on this knowledge, the resin-sealed electronic and electrical parts with high-temperature load durability have completed the present invention. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, that is, the present invention is made of non-flammable epoxy resin powder. The body coating is thermally hardened and forms a pull-down layer (A) having thermal cycle durability and high-temperature load durability, so that it contains aluminum hydroxide, aluminum oxide hydrate, magnesium hydroxide, calcium aluminate hydrate, and phosphorus It is characterized in that the epoxy resin powder coating material of at least one flame retardant selected from the flame retardants and nitrogen flame retardants is thermally cured and the flame retardant coating layer (B) formed is sealed. Resin-sealed electronic and electrical parts' and the surface of electronic and electrical parts are coated with a non-flammable epoxy-based powder coating to a thickness of at least 0.1 mm, and then coated with a solution containing hydroxide Epoxy resin powder coatings of at least one flame retardant selected from aluminum, alumina hydrate, magnesium hydroxide, ming acid bromide hydrate, phosphorous flame retardant, and nitrogen flame retardant to at least 0. 1 -6- -------------- Installation --- ^ (Please read the notes on the back to write this page first) Thread-This paper size applies to China National Standard (CNS) A4 (210x 297) ) 1242581 A7 _ B7 V. Description of the invention After the thickness of (4) mm, the coating layer is thermally hardened to pull the layer (A) and A method for manufacturing a resin-sealed electronic / electrical part characterized by sealing an electrical insulating resin layer having a total thickness of 0.3 to 1 mm from a flame-resistant coating layer (B). Embodiments of the invention In the present invention, an epoxy-based powder coating that forms a downwardly-pulling layer (A) is a non-flammable material that does not substantially contain a flame retardant, and contains (a) solid epoxy resin and ( B) Polycarboxylic anhydride-based hardener. (A) The solid epoxy resin of the component is a solid epoxy resin at room temperature, that is, 25 ° C, and one having two or more epoxy groups in each molecule is not particularly limited. Here, the non-flammability resistance of the flame retardant is not included. The test piece (12 7 mm X 1 2 · 7 mm X 1 mm) that has been pre-heat-hardened is tested in accordance with the flame resistance test method standard UL-9 4 Time means those who do not meet the reference condition V-0. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs --- (Please read the notes on the back to write this page first) Line-a more suitable epoxy resin, the melting point of 50 ~ 150 ° C. If the melting point is less than 50 ° C, the powder coating becomes easy to consolidate, and when the melting point is higher than 150 ° C, the viscosity of the powder coating when melting will become higher, and smoothness will not be obtained. Coating. As for this type of epoxy resin, for example, diglycidyl ether type epoxy resins such as bisphenol A type epoxy resins and bisphenol F type epoxy resins having a melting point of 50 to 150 ° C, phenolic novolac lacquer type rings Oxygen resin, cresol novolac lacquer type ring This paper is applicable to Chinese National Standard (CNS) A4 specification (210 X 297 public love) 1242581 A7 B7 V. Description of the invention (5) Novolac lacquer type epoxy resin such as oxygen resin For specific examples, polyfunctional glyceryl ether epoxy resins such as ketyl ether epoxy resins, phenol novolacs, glycidyl ethers, bisphenol A lipids, and glycidyl ether ring of glycerol. Glyceryl ether type epoxy resin, dibasic acid, glycidyl ester of isophthalic acid, butadiene epoxidized epoxy resin, and the like. . In addition, the melting point of the epoxy resin mixture which is liquid at normal temperature can be used arbitrarily. Secondly, for example, a glycidyl resin based on a double lacquer glycidyl epoxy resin D, a polyglycidyl epoxy resin, etc. can be used as epoxy resin, 50 to 1 5 phenol A-based ether, bisphenol oleyl ether epoxy resin-based ester type, or glycidol epoxy resin based on shrinkable epoxy resin acetic acid made of 0 t: glycidol n-cresol phenol F to polymerize Polycarboxylic anhydride-based hardeners in the range of this resin mixed, all)

0 0 \\ II coch2ch2oc

----------------- (Please read the notes on the back first to write this page) Order--Line-Bistrimethylene printed on the Intellectual Property Bureau of the Ministry of Economic Affairs's Consumer Cooperatives Glycolic acid ester, formula 0ch3 0c

0 Methacrylic acid shown in table, this paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) -8-1242581 Δ7 ____ B7 Printed by the Consumer Cooperative of Intellectual Property Bureau, Ministry of Economic Affairs Description of the invention (6)

Pyromellitic anhydride represented by the formula

Benzophenone tetracarboxylic anhydride and the like. Because these anhydrides are polyfunctional, they react with epoxy resins to form high-density cross-links compared to general low-functional anhydrides such as tetrahydrophthalic anhydride and tetrachlorophthalic anhydride. It brings a good tendency in the direction of moisture resistance. These polybasic carboxylic anhydrides are powders having a particle size of 90% by weight or more and 200 / m or less, preferably 95% by weight or more and 150 // m or less. These polycarboxylic anhydrides use 0.4 to 1.0 equivalents per epoxy equivalent of the solid epoxy resin of the component (a), preferably a ratio of 0.45 to 0.99 equivalents. If the ratio is smaller, the durability under a high-temperature load is lowered, and when the ratio is higher, the thermal cycle durability is lowered. The pull-down layer (A) of the present invention, which is obtained by thermally hardening a powder coating containing these components, is superior in thermal cycle durability and high-temperature load durability, and has excellent adhesion to electronic and electrical parts. Secondly, as for the epoxy resin (c) used in the powder coating for forming the flame-resistant coating layer (B), the above-mentioned (a) component can be exemplified -------------- Packing ---; (Please read the notes on the back to write this page first) --Line · This paper size applies to China National Standard (CNS) A4 (210 X 297 public love) -9- 1242581 Λ7 B7 V. Description of the invention (7) Any choice. In addition, this (c) component is usually used in combination with a hardener for epoxy resin (butyl) as usual, but if the (butyl) component is a solid hardener for epoxy resin at 25 ° C under normal humidity, Any time, it is not particularly limited. Examples of such a hard northern agent include cyclic fats such as aromatic anhydrides such as benzophenone tetracarboxylic anhydride and ethylene glycol trimellitic acid, tetrahydrophthalic anhydride, and alkenyl succinic anhydride. Phenolic lacquer-type phenolic resins of reaction products of aliphatic acid anhydrides such as family acid anhydrides, polyadipic anhydride, polyazelaic anhydride, polysebacic anhydride, and various anhydrides, phenols, cresols, and aldehydes Aralkyl-type phenol resins, reaction products of phenols and aralkyl ethers, bisphenol A, bisphenol F, trihydroxyphenylmethane, tetrahydroxyphenylethane, polyphenols, dicyano Dimethylamine, imidazole derivatives, dihydrazine and the like. In the present invention, the powder coating used to form the flame-resistant coating layer (B) needs to be composed of a hydroxide hydroxide (pentium), an oxide hydroxide hydrate (hex), magnesium hydroxide (heptane), and calcium aluminate hydrate ( At least one selected from the group consisting of phosphorus), phosphorus-based flame retardant (non), and nitrogen-based flame retardant (dec). These flame retardants have an average particle diameter of 0 · 5 ~ 6 0 // m, preferably powders of 1.0 ~ 3 0 // m. Examples of the phosphorus-based flame retardant (non) include red phosphorus, ammonium phosphate, tricresol phosphate (TCP), triethyl phosphate (τ EP), and ginseng phosphate (/ 3-chloroethyl) ester. (TCEP), ginseng dichloropropyl phosphate (CRP), cresol phosphate diphenyl ester, (CDP), xylyl diphenyl phosphate (XDP), acid phosphate, and nitrogen-containing phosphorus compounds. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) — '' 一 -10- (Please read the notes on the back before filling in the page). Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives for printing 1242581 Α7 ^^ B7 V. Description of the Invention (8) A representative example of alumina hydrate (hex) is trihydrate α-gold oxide. Examples of the nitrogen-based flame retardant (dec) include melamine melamine, melamine phosphate, and the like. These flame retardants (E) to (Dec) can be used individually or in combination of two or more kinds. In the case of using a flame retardant (referred to as an M-type flame retardant) that belongs to flame retardants (penta) to (octane) alone or in combination of two or more, 30% by weight or more of the flame retardant coating (B) is used. The proportion is preferably 40 to 65% by weight. When a phosphorus-based flame retardant (non) is used alone or a nitrogen-based flame retardant (decane) is used alone, the flame-resistant coating layer (B) is used so that the phosphorus atom content or nitrogen atom content becomes 10% by weight or more. can. When M-type flame retardant and phosphorus-based flame retardant (non) are used, when μ-type flame retardant and nitrogen-based flame retardant (dec) are used, or M-type flame retardant and phosphorus-based flame retardant (non) and nitrogen-based flame retardant (Dec) In the case of the flame-resistant coating (B), the M-type flame retardant becomes a ratio of 30% by weight or more. It is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs to make the phosphorus atom content and nitrogen atom content. The amount or the total content of the phosphorus atom and the nitrogen atom may be a ratio of 2% by weight or more. When a phosphorus-based flame retardant (non) and a nitrogen-based flame retardant (dec) are used, the ratio of the total content of phosphorus atoms and nitrogen atoms to the flame-resistant coating layer (B) 'may be 10% by weight or more. The flame-resistant coating layer (B) may contain other inorganic-based flame retardants such as tin oxide, zirconium hydroxide, and barium metaborate. This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 29? Mm)--11. 1242581 A7 B7 V. Description of the invention (printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 9 (A) or B) The epoxy resin powder coating material is added with the aforementioned "can be added sealant for electronic and electrical parts, silicon dioxide, fused silica, calcium carbonate and other inorganic smoothing agents, thermal cycle durability. Enhancers, coupling agents, colorants, laser colorants, etc. In the present invention, the epoxy-based powder coating for forming the pull-down layer (A) (B) is, for example, a melt-mixing treatment such as an extruder using a kneading machine, etc., for a mass filler. After that, the mixture is cooled and solidified and mixed with the dry-type hardener in the coarsely pulverized material to promote dry hardening. After the mixture is melt-mixed, the mixture is cooled and pulverized, classified, and adjusted to an average particle diameter of 20. FIG. 1 is a partial plan view of a resin-sealed electronics of the present invention. That is, a plan view of the resin-sealed layer of the present invention and a part of the externally-sealed resin-sealed layer. Fig. 2 is a Y-Y sectional view of the example of Fig. 1; In these figures, the electrodes 2, 2 / are fixed to both sides of the disc-shaped ceramic capacitor body (dielectric element) 1, and the electrodes are soldered 3/3 through the lead 4. 4 /, a pull-down layer 5 and a flame-resistant coating layer 6 are formed on the entire surface (except for the part of the wire). The formation of the pull-down layer 5 and the flame-resistant coating layer 6 is more advantageous in terms of using the flow dipping method, but other coating methods such as the composition of the flame-resistant coating layer (according to the crystalline properties that are commonly used can also be used.塡 Fillers, surface flame retardant additives, catalysts and flame retardant coatings, epoxy resins and non-mechanical, or use of compounds, coarse pulverization, solidifying mixture of additives and auxiliary components, micro ~ 2 〇 〇 β m and electrical Please read the precautions on the back of the ceramic capacitor for one case

Threading This paper is in accordance with China National Standard (CNS) A4 specification (210 × 297 mm) -12 1242581 A7 B7 V. Description of the invention (10) Electrostatic flow cell method, electrostatic spray method, etc. In the case of resin sealing, the electronic and electrical parts of the sealed body are usually preheated in advance at 120 to 170 ° C, and the resin composition is adhered to the desired thickness of the resin. , The resin layer is sufficiently thermally hardened by heat treatment. The heat treatment is usually performed by heating at 120 to 170 ° C for 1 to 2 hours. In the method of the present invention, when the pull-down layer 5 and the flame-resistant coating layer 6 are formed on the surface of the electronic and electrical parts, the respective coating layers are coated with a powder coating to a thickness of at least 0 · 1 mm. When the thickness of each coating layer is too thin, it is difficult to form a resin sealing layer in a good state, and pinholes are easily formed in the case of pre-heat curing, which is not suitable. Further, the total thickness of the pull-down layer 5 and the flame-resistant coating layer 6 is 0.3 to 1 mm. If the total layer thickness is too thin, it is difficult to form an electrically insulating sealing layer having good thermal cycle durability, high-temperature load durability, and flame resistance in the case of pre-heat hardening, which is not suitable. If the thickness of the entire layer is too thick, no improvement in the characteristics of the combined thickness is observed, and the formation of a build-up height makes it unsuitable for practical use as electronic and electrical parts. EFFECTS OF THE INVENTION The present invention is a sealing layer which is most suitable for a case where it does not break even in the case of moisture resistance, heat resistance, chemical resistance, adhesion strength of resin sealing layer, thermal cycle durability, or maintenance of capacitors. Electronic and electrical parts (hybrid ICs, capacitors, variable resistors, thermistors, etc.) whose physical properties are required. This paper size is applicable to China National Standard (CNS) A4 specifications (210X297 mm 1 -13-pack-(please Please read the notes on the back before filling in the page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed 1242581 A7 B7 V. Description of the invention (11), but it can also be applied to other electronic and electrical parts. Example Second, use The examples will explain this in more detail: ^ Sun and Moon. In addition, the evaluation of the physical properties in each case was performed according to the following methods. (1) Thermal cycle durability Ceramic capacitors with a rated voltage of 2 kV and a capacitance of 47 0 p F The element was preheated at 150 ° C, and the powder coating was adhered to the resin layer with a thickness of 0.7 mm by a flow dipping method on the element, and heated at 150 ° C for 60 minutes and hardened to produce a test sample. At this time The resin layer is covered with a single layer of the resin composition for the pull-down layer or the resin composition for the flame-resistant layer, or is covered with two layers of the two resin compositions (total layer thickness: 0.7 mm). It is also produced for use as a "control test". A coated test piece of a flame-resistant epoxy resin containing both a bromine-based flame retardant and antimony trioxide. Next, these test pieces were installed in a thermal cycle tester and maintained at 40 ° C for 3 hours. After 0 minutes, the temperature was immediately raised to 125 ° C and maintained at the same temperature for 3 ◦ minutes. The cycle was repeated as one cycle, and the number of cycles until cracks were formed on the resin layer was visually recorded. In this test, 20 test pieces were prepared for each of the preparation conditions, and all of them were 0 (good) when the durability was shown to be 300 cycles or more, and it was judged to be X (bad). Applicable to China National Standard (CNS) A4 specification (210X 297 mm) (Please read the notes on the back before filling in the page)-Binding and ordering printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-14-Employees of the Intellectual Property Bureau of the Ministry of Economic Affairs consumption Printed by the cooperative 1242581 A7 B7 V. Description of the invention () 12 (2) High-temperature load durability and (1) The same method is used to make a test piece ° For this test piece, the rating is applied in a constant temperature oven that has been maintained at 1 2 5 ° C The DC voltage 3 k V ', which is 1 to 5 times the voltage, was measured until the dielectric breakdown occurred. In this test, 20 test pieces were prepared for each preparation condition, and all of them were displayed for more than 500 hours. The durability is 0 (good), and it is judged to be X (bad). (3) Flame resistance (i) UL-9 4 Test pieces obtained by pre-hardening each powder coating (1 2 7 mm X 1 2. 7 mm x 1 mm), the test is performed in accordance with the flame resistance test method standard UL-94. Those who meet the reference condition V-0 are judged as 0 (good) and those who fail are judged as X (bad). (1 1) UL-1 4 1 4 Two-layer coated test pieces made in the same way as in (1) are tested in accordance with the flame resistance test method standard u L-1 4 1 4 and those who meet the flame resistance standards are judged to be ○ (good), and those who fail are judged as X (bad). Reference Examples 1 to 17 A powder coating material having a composition shown in Tables 1 and 2 was prepared, and test pieces were prepared using the coating material, and physical properties of each test piece were evaluated. The results are shown in Table 1 and the paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210X297 mm)

-15- A7 B7 I24258l V. Description of the invention (13) 2 ° and Reference Examples 1 to 6 are the resin composition for the pull-down layer. Reference Examples 8 to 17 are the resin composition for the flame-resistant resin layer Reference Example 7 is a compound of a coating resin composition for a control test.

Order

Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs of the Consumer Cooperatives. The paper size is applicable to the Chinese National Standard (CNS) M specification (210X297 mm) -16- 1242581 A7 B7 s, Invention Description (14) Printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economy Table 1 1 2 3 4 5 6 7 8 Composition of epoxy resin (1) 50 50 epoxy resin (2) 40 40 40 40 40 40 epoxy resin (3) 60 60 60 60 60 60 epoxy resin (4) 50 50 Epoxy resin (5) 塡 Filler (1) 110 110 110 110 110 110 塡 Filler (2) 120 Hardener (1) 10.2 10.2 7.1 16.3 Hardener (2) 12.8 Hardener 8.3 10.4 10.4 Hardener ⑷ Hardening agent (5) Hardening accelerator⑴ 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.2 Hardening accelerator (2) Ming hydroxide 100 Alumina hydrate Magnesium hydroxide Calcium aluminate hydrate Phosphorus flame retardant (1) 6 Phosphorus flame retardant Agent (2) Nitrogen-based flame retardant Bromine-based flame retardant 20 Antimony trioxide 10 Spreading agent 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Silane coupling agent 1 1 1 1 1 1 1 1 Thermal cycle durability improver 5 Evaluation of thermal cycle durability 0,000,000X High-temperature load durability 0,000,000 0,000,000 Flame resistance (UL-94) XXXXXX 〇〇I-- ------- 1 clothing — (Please read the precautions on the back before filling in the page) Thread. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) -17- 1242581 A7 B7 V. Invention Note L) 15 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 2 9 10 11 12 13 14 15 16 17 Group of epoxy resins 50 50 into epoxy resins 50 50 85 85 50 50 Epoxy resins 35 35 35 35 35 Epoxy Shed ⑷ 50 50 50 Epoxy Shed 15 50 15 15 15 15 15 15 塡 Filler ⑴ Filler ⑵ 20 Hardener (1) Hardener (2) Hardener (3) 10.4 10.4 Hardener ⑷ 3 3 3 3 3 3 Hardener (5) 80 Hardener (1) 0.2 0.2 Hardener ⑵ 2 Aluminum hydroxide 80 200 150 100 Alumina hydrate 150 Magnesium hydroxide 18 0 Calcium Aluminate Hydrate 150 Phosphorus Flame Retardant ⑴ Phosphorus Flame Retardant ⑵ 40 50 100 Nitrogen Flame Retardant 40 100 Bromine Flame Retardant Antimony Trioxide Equalizer 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Silane Coupling Agent 1 Thermal cycle durability improving agent evaluation Thermal cycle durability XXXXXXXXX High temperature load durability 〇XXXXXXXX Flame resistance (UL-94) 〇〇〇〇〇〇〇〇〇〇 ^-(Please read the precautions on the back before filling: page).

1. The paper size of the 1T line is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -18- 1242581 A7 -------B7 V. Description of the invention (u) 16 And, the records in the table The contents of the components are as follows. Epoxy resin (1): bisphenol A epoxy resin, epoxy equivalent of 4 7 5 g / m ◦ 1 e, solid at 25 ° C, trade name Epikote 1001, oiled shell (砚 壳) epoxy ( (2): epoxy resin (2): bisphenol A epoxy resin, epoxy equivalent of 650 g / mo 1 e, solid at 250 ° C, trade name Epikote 1 002, oiled shell ) Epoxy (3): epoxy resin (3): bisphenol A epoxy resin, epoxy equivalent 925g / mo 1 e, solid at 25 ° C, trade name Epikote 1004, oiled shell epoxy Production of epoxy resin (4): bisphenol A epoxy resin, epoxy equivalent of 1950 g / mo 1 e, solid at 25 ° C, trade name Epikote 1007, oiled shell (pan shell) epoxy Production of epoxy resin (5): n-cresol novolac epoxy resin, epoxy equivalent 2l 3g / mo 1 e, solid at 25 ° C 'trade name E 0 CN 102S, Nippon Kayaku Co., Ltd. Printed tincture charge (1) by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Manufacturing Economy: fused silica, average particle size 1 5 // m 'Trade name FUSELEXRD-8, Longsen (shares) manufacture tincture charge (2) : Crystalline Silicon dioxide, average particle size 5 // m 'Trade name CRYSTALITE CMC-6, hardener made by Longsen (stock): benzophenone tetracarboxylic anhydride, trade name BTDA, hardened by ALCO Chemical Agent (2): bistrimethylene tricarboxylate 'trade name RIKAACID TMEG-500, manufactured by Nippon Physico Chemical Co., Ltd. This paper applies Chinese National Standard (CNS) A4 specifications (210X297 public envy) -19- 1242581 A7 _ B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention < 7) Hardener (3): Methylbenzenedicarboxylic anhydride, trade name EPICLON B-4400 'Danik Ink (ink) Chemical Industry ( (4): Hardener (4): 2,4-diamine group 6 — (2 / —methylimidazolyl 1 /) — ethyl-symmetric-three-tillage, average particle size 2 0 // m '2MZ — A, Shikoku Chemicals Co., Ltd. (5) Hardener (5): Bisphenol A, epichlorohydrin polycondensate, epoxy resin hardener, trade name EPICURE-EK-170. Accelerator (1): Dicyanodiamide, trade name DICY, hardened by Carbide Industrial (Stock) Agent (2): No. 1-8-diazabicyclo (5.4.0) undecene-7 salt of phenolic novolac lacquer resin, trade name U-CATSA831, aluminum hydroxide manufactured by San Apro: average particle size Diameter 1 7 // m, trade name Η1 g 1111 e Η 3 1 ′ Alumina hydrate made by Showa Denko Corporation: α alumina trihydrate magnesium hydroxide: Crystal particle diameter 0 · 6 ~ 0 · 8 // m 'Brand name KISUMA 5A, manufactured by Kyowa Chemical Industry Co., Ltd. calcium aluminate hydrate: trade name NCA 1 0 3' Phosphorous flame retardant (1) manufactured by Japan Light Metal (stock): phenol surface treatment red phosphorus, average particle size 2 5 # m, trade name NOVA RED 120, phosphorous flame retardant (2) made by 燐 (phosphorus) chemical industry (stock) •• melamine-coated ammonium polyphosphate 'trade name (please read the precautions on the back before this page)

Order: -line · This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -20-1242581 at Β7 18 V. Description of the invention ((TERRAJU C60), Chisso (stock) manufacturing Please read the back Precautions for nitrogen-based flame retardants: melamine melamine 'average particle size 10 ～ 30 // m, trade name MC440, bromine-based flame retardant manufactured by Nissan Chemical Industry Co., Ltd .: Decabromodiphenyl ether, product Named FR-p E, Nippon Chemical Co., Ltd. manufactures antimony-based flame retardants: antimony trioxide spreader: acrylate oligomers' trade name NIKALITEXK 21, Japan Carbide Industry (Stock) silane coupling agent : 3 -glycidyloxypropyltrimethoxysilane, at 2 5 t: liquid state, trade name S 5 1 0, manufactured by Clusso (strand), thermal cycle durability improver: core / shell II (BA / ST) / Μ A rubber, trade name PARALOID EXL 2655), Wu Yu Chemical Industry Co., Ltd. Manufacturing Example Comparative Example Comparative Example Intellectual Property Bureau of the Ministry of Economic Affairs Employee Consumer Cooperatives Printed the powder coatings obtained in Reference Examples 1 to 17 as a table Layer thicknesses shown in 3 and Table 4 The coating was coated on a ceramic capacitor, and its physical properties were evaluated. The results are shown in Tables 3 and 4. In addition, the circle numbers shown in the columns of the pull-down layer and the flame-resistant coating layer are the numbers of the reference examples, and the numbers in parentheses are the layer thickness (πί m. This paper size applies the Chinese National Standard (CNS) Α4 specification (210 X 297). (Mm) -21-1242581 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of invention (19) Table 3 Multilayer characteristics, Example 1 2 3 4 5 6 7 Pull down the layer ① (0.3) ② (0.3) ⑥ (0.4) ⑥ (0.2) ⑥ (0.5) ⑥ (0.5) ⑥ (0.4) Flame-resistant coating ⑧ (0.4) ⑨ (0.4) ⑩ (0.3) ⑪ (0.5) ⑪ (0.2) ⑫ (0.2 ) 0.3 (0.3) Thermal cycling endurance 100,000 high-temperature load endurance 100,000 flammability (UL-1414) 00000000 Table 4 Multilayer characteristics: Example of sinus Compare 1 column of comparative examples (10 11 1 2 3 Pull down the layer ((S) (; 0.5) (B) <: 0.5) (S); 0.5) ⑥ (0.5) ⑩ (0.3) ⑧ (0.3) ⑫ (0.3) ⑦ (0.7) Flame-resistant coating (0) (; 0.2) (⑤ (： 0.2) 丨 〔0.2) ⑰ (0.2) ① (0.4) ⑩ (0.4) ⑬ (0.4) Thermal cycle durability (0 (0 < 0 〇XXX 〇 High temperature load durability < 0 (0 < 0 〇X 〇X 〇 Flame resistance) (UL-1414) 0 < 0 '0 〇X 〇〇〇t --- ( Please read the precautions on the back before filling in the page.) The size of the paper is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) -22- 1242581 A7 B7 V. Description of the invention (2.) Fig. 1 is a partially cutaway plan view of a resin-sealed ceramic capacitor, which is an example of the electronic and electrical parts of the present invention. Fig. 2 is an X-Y plane view of the example of Fig. 1. Explanation of the drawing number 1 Disc-shaped ceramic Capacitor element 2, 2 / electrode 3, 3, soldering 4, 4 / lead wire 5 pull down layer 6 flame retardant coating Please read the precautions on the back before I. Page binding Printed by the employee's consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper size applies to China National Standard (CNS) A4 (210X297mm) -23-

Claims (1)

1242581 H C8 D8 6. Scope of patent application1. A resin-sealed electronic and electrical part, characterized by thermal cycle durability and high temperature load formed by thermally hardening a non-flammable epoxy powder coating. The pull-down layer QA for durability) is coated with at least one type of flame-resistant material selected from the group consisting of aluminum hydroxide, aluminum oxide hydrate, magnesium hydroxide, calcium aluminate hydrate, phosphorus-based flame retardant, and nitrogen-based flame retardant. Layer (B) is sealed. 2 · The resin-sealed electronic and electrical parts as described in the first item of the patent application, wherein the pull-down layer (A) is formed by thermally hardening a powder coating containing a solid epoxy resin and a polycarboxylic anhydride-based hardener. By. 3. If the resin-sealed electronic and electrical parts of the first or second item of the patent application range, the flame-resistant coating layer (B) contains a solid epoxy resin and a solid epoxy resin hardener, It is formed by thermally curing an epoxy resin powder coating with at least one flame retardant selected from aluminum hydroxide, alumina hydrate, magnesium hydroxide, calcium aluminate hydrate, phosphorus flame retardant and nitrogen flame retardant. of. 4 · A method for manufacturing resin-sealed electronic and electrical parts, characterized in that the surface of the original body of electronic and electrical parts is coated with a non-flammable epoxy-based powder coating to a thickness of at least 0.1 mm, which is next to that The epoxy resin powder coating containing at least one flame retardant selected from the group consisting of aluminum hydroxide, aluminum oxide hydrate, magnesium hydroxide, calcium aluminate hydrate, phosphorus-based flame retardant, and nitrogen-based flame retardant is applied to After the thickness is at least 0 · 1 mm, the coating layers are thermally hardened to form a pull-down layer (A) and a flame-resistant coating layer (B) with a thermal cycle durability and high-temperature load durability. The thickness of all layers of the electrical insulation tree is 0.3 to 1.0 mm. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling in. Order Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -24-1242581 1 D8 VI. Scope of patent application Lipid seal. Please read the precautions on the back before filling in Λ1. Packing and page), 1T line Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper applies the Chinese National Standard (CNS) Α4 specification (210 × 297 mm) -25-