阅读说明：本技术 一种耐热型、阻燃性的有机树脂组合物 (Heat-resistant and flame-retardant organic resin composition ) 是由 陆俊南 沈志良 史亮亮 易先春 于 2018-06-11 设计创作，主要内容包括：本发明涉及一种耐热性树脂组合物的制造方法,其特征在于,所述制造方法包括以下工序：(a)将含有聚烯烃系树脂的树脂组合物、相对于该树脂组合物100质量份为0.01质量份~0.6质量份的有机过氧化物以及10质量份~400质量份的无机填料、和相对于该无机填料100质量份为0.5质量份~15.0质量份的硅烷偶联剂在上述有机过氧化物的分解温度以上进行熔融混炼,不混合硅烷醇缩合催化剂而制备硅烷母料的工序。涉及通过该耐热性树脂组合物的制造方法所制造的耐热性树脂组合物。(A process for producing a heat-resistant resin composition, which comprises (a) a step of melt-kneading a resin composition containing a polyolefin resin, 0.01 part by mass of ~ 0.6.6 parts by mass of an organic peroxide and 10 parts by mass of ~ 400 parts by mass of an inorganic filler per 100 parts by mass of the resin composition, and 0.5 part by mass of ~ 15.0.0 parts by mass of a silane coupling agent per 100 parts by mass of the inorganic filler at a temperature not lower than the decomposition temperature of the organic peroxide, and a step of preparing a silane master batch without mixing a silanol condensation catalyst.)

1. A heat-resistant resin composition, characterized in that the production method comprises the following steps:

(a) a step for preparing a silane master batch by melt-kneading a resin composition containing a polyolefin resin, 0.02 to 0.6 parts by mass of an organic peroxide and 10 to 400 parts by mass of an inorganic filler per 100 parts by mass of the resin composition, and 0.5 to 15.0 parts by mass of a silane coupling agent per 100 parts by mass of the inorganic filler at a temperature not lower than the decomposition temperature of the organic peroxide, without mixing a silanol condensation catalyst;

(b) a step of molding the silane master batch and the silanol condensation catalyst after melt-kneading; and

(c) and (c) crosslinking the molded product obtained in the step (b) by bringing the molded product into contact with moisture.

2. The method for producing a heat-resistant resin composition according to claim 1, comprising the steps of:

(a-1) a step of mixing 0.02 to 0.6 parts by mass of an organic peroxide and 10 to 400 parts by mass of an inorganic filler with 100 parts by mass of a resin composition containing a polyolefin resin, and 0.5 to 13.0 parts by mass of a silane coupling agent with respect to 100 parts by mass of the inorganic filler to prepare a mixture;

(a-2) a step of melt-kneading the mixture and the resin composition at a temperature not lower than the decomposition temperature of the organic peroxide, and preparing a silane master batch without mixing a silanol condensation catalyst;

(b-1) a step of mixing a silanol condensation catalyst with a carrier resin to produce a catalyst master batch;

(b-2) melting and kneading the silane master batch and the catalyst master batch prepared in the steps (a-2) and (b-1), respectively, and then molding the mixture; and

(c) and (c) crosslinking the molded product obtained in the step (b-2) by bringing the molded product into contact with moisture.

Technical Field

The present invention relates to a method for producing a heat-resistant resin composition.

Background

In some cases, the wiring material of the electric/electronic device is heated to 80 to 105 ℃ and further to about 125 ℃ in a state of being continuously used, and heat resistance against the heating is required in some cases. In this case, in order to impart high heat resistance to the wiring material, a method of crosslinking the coating material by an electron beam crosslinking method, a chemical crosslinking method, or the like is adopted.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a heat-resistant resin composition which can suppress volatilization of a silane coupling agent having an unsaturated group from a reaction system and is excellent in flame retardancy, heat resistance and mechanical properties.

A method for producing a heat-resistant resin composition, comprising the steps of:

(a) a step for preparing a silane master batch by melt-kneading a resin composition containing a polyolefin resin, 0.02 to 0.6 parts by mass of an organic peroxide and 10 to 400 parts by mass of an inorganic filler per 100 parts by mass of the resin composition, and 0.5 to 15.0 parts by mass of a silane coupling agent per 100 parts by mass of the inorganic filler at a temperature not lower than the decomposition temperature of the organic peroxide, without mixing a silanol condensation catalyst;

(b) a step of molding the silane master batch and the silanol condensation catalyst after melt-kneading; and

(c) and (c) crosslinking the molded product obtained in the step (b) by bringing the molded product into contact with moisture.

2. The method for producing a heat-resistant resin composition according to claim 1, comprising the steps of:

(a-1) a step of mixing 0.02 to 0.6 parts by mass of an organic peroxide and 10 to 400 parts by mass of an inorganic filler with 100 parts by mass of a resin composition containing a polyolefin resin, and 0.5 to 13.0 parts by mass of a silane coupling agent with respect to 100 parts by mass of the inorganic filler to prepare a mixture;

(a-2) a step of melt-kneading the mixture and the resin composition at a temperature not lower than the decomposition temperature of the organic peroxide, and preparing a silane master batch without mixing a silanol condensation catalyst;

(b-1) a step of mixing a silanol condensation catalyst with a carrier resin to produce a catalyst master batch;

(b-2) melting and kneading the silane master batch and the catalyst master batch prepared in the steps (a-2) and (b-1), respectively, and then molding the mixture; and

(c) and (c) crosslinking the molded product obtained in the step (b-2) by bringing the molded product into contact with moisture.

The invention has the beneficial effects that:

the present invention provides a heat-resistant resin composition and a heat-resistant resin composition, and a heat-resistant resin composition and a molded article of the heat-resistant resin composition can be efficiently obtained.

Preferred embodiments of the present invention are described in detail below.

The method for producing a heat-resistant resin composition of the present invention comprises the steps of: (a) a step for producing a silane master batch by melt-kneading a resin composition containing a polyolefin resin, 0.01 to 0.6 parts by mass of an organic peroxide and 10 to 400 parts by mass of an inorganic filler per 100 parts by mass of the resin composition, and 0.5 to 15.0 parts by mass of a silane coupling agent per 100 parts by mass of the inorganic filler at a temperature equal to or higher than the decomposition temperature of the organic peroxide, without mixing a silanol condensation catalyst; (b) a step of molding the silane master batch after melt-kneading with a silanol condensation catalyst; and (c) a step of bringing the molded article obtained in the step (b) into contact with moisture to crosslink the molded article.