Flame-retardant resin processed article
View Patent ↗A flame retardant resin treated article that excels in flame retardancy and is free from bleedout. A resin composition comprising a flame retarder of metal phosphinate represented by the general formula: (I) (in the formula, each of R 1 and R 2 is a C 1 -C 6 alkyl or an aryl group having 12 or less carbon atoms; M is calcium, aluminum or zinc; and when M=aluminum, m=3, and otherwise m=2), a reactive organophosphorus flame retarder having an unsaturated group at its terminal and a resin wherein the total content of metal phosphinate and reactive organophosphorus flame retarder is in the range of 5 to 30 mass % is provided in molded form or coating form.
1. A flame-retardant resin processed article, comprising a resin composition comprising a flame retardant that comprises a metal phosphinate represented by the following formula (I), a reactive organophosphorus flame retardant having a terminal unsaturated group, and a resin, the resin composition being molded into a certain shape or formed into a coating film, wherein the total content of the metal phosphinate and the reactive organophosphorus flame retardant in the resin composition is from 5 to 30 mass %:
where R 1 and R 2 each independently represent an alkyl group having 1 to 6 carbon atoms or an aryl group having 12 or less carbon atoms; where M represents calcium, aluminum or zinc; and where m is 3, when M representing aluminum, and otherwise m is 2.
2. The flame-retardant resin processed article according to claim 1 , wherein the resin composition comprises two or more kinds of the reactive organophosphorus flame retardants, and at least one kind of the reactive organophosphorus flame retardants comprises a polyfunctional reactive flame retardant.
3. The flame-retardant resin processed article according to claim 1 , wherein the resin composition contains 5 mass % or more of the metal phosphinate and 0.5 mass % or more of the reactive organophosphorus flame retardant.
4. The flame-retardant resin processed article according to claim 1 , wherein the resin composition further contains a flame retardant except the reactive organophosphorus flame retardant, the flame retardant comprising a cyclic nitrogen-containing compound having at least one terminal unsaturated group.
5. The flame-retardant resin processed article according to claim 1 , wherein the resin composition further contains hydrophilic silica powder having an average particle diameter of 15 μm or less.
6. The flame-retardant resin processed article according to claim 5 , wherein the hydrophilic silica powder comprises a porous structure having a pore volume of 1.8 ml/g or less and a pH of 4 to 7.
7. The flame-retardant resin processed article according to claim 5 , wherein the hydrophilic silica powder has an oil absorption of 50 ml/100 g or more in accordance with JIS K5101.
8. The flame-retardant resin processed article according to claim 5 , wherein the resin composition comprises 2 to 12 mass % of the hydrophilic silica powder.
9. The flame-retardant resin processed article according to claim 1 , wherein the resin composition further comprises a crosslinking agent which is a polyfunctional monomer or oligomer having an unsaturated bond at a terminal end of main skeleton.
10. The flame-retardant resin processed article according to claim 1 , further comprising 1 to 45 mass % of an inorganic filler with respect to the entirety of the flame-retardant resin processed article.
11. The flame-retardant resin processed article according to claim 10 , further comprising 1 to 8 mass % of a laminar clay as the inorganic filler with respect to the entirety of the flame-retardant resin processed article, the laminar clay comprising laminated silicate layers.
12. The flame-retardant resin processed article according to claim 1 , further comprising 5 to 50 mass % of reinforced fibers with respect to the entirety of the flame-retardant resin processed article.
13. The flame-retardant resin processed article according to claim 1 , which is obtained by causing the resin and the reactive organophosphorus flame retardant to react with each other by irradiation with electron beams or γ rays at a dose of 10 kGy or more.
14. The flame-retardant resin processed article according to claim 1 , which is obtained by causing the resin and the reactive organophosphorus flame retardant to react with each other at a temperature higher than a temperature at which the resin composition is molded by 5° C. or higher.
15. The flame-retardant resin processed article according to claim 1 , which is one selected from the group consisting of a molded article, a coating film, and a sealing compound.
16. The flame-retardant resin processed article according to claim 1 , which is used as an electrical component or an electronic component.