Method for using organic amine as organic peroxide sulfuration accessory ingredient

Abstract

The invention provides to a using method of organic amine as an accessory ingredient for vulcanizing organic superoxide, which pertains to the field of vulcanizing agents. The method chosen from either one of the following two methods: a prefabrication addition method, wherein, organic amine is firstly mixed with a solid thickener and a liquid diluent and evenly ground into paste for later use; then the paste is added into mixing rubber which is prepared by adding a vulcanizing agent into the heat vulcanized silicone rubber to be mixed evenly; a direct addition method, wherein, organic amine is directly added into mixing rubber material which is prepared by adding a vulcanizing agent into the heat vulcanized silicone rubber to be mixed evenly. The using method of the invention has the advantages of reducing vulcanizing temperature, shortening vulcanizing time and achieving a purpose of reducing production cost and increasing production efficiency, on the other hand, the more environment-friendly novel halogen free vulcanizing agents, such as methyl benzoyl organic peroxide and methoxyl benzoyl organic peroxide, etc., have more ideal application prospect.

Description

technical field [0001] The invention belongs to the field of vulcanizing agents, and in particular relates to a method for using an organic amine as an organic peroxide vulcanizing compounding agent. Background technique [0002] Benzoyl organic peroxides are used as vulcanizing agents, mainly used for extrusion vulcanization of silicone rubber. Among them, bis(2,4-dichlorobenzoyl) peroxide has the characteristics of hot air vulcanization at normal pressure, no bubbles, high product strength, low operating temperature, and fast vulcanization speed. The most commonly used vulcanizing agent in rubber. Although bis(2,4-dichlorobenzoyl) peroxide can produce harmful substances such as 2,4-dichlorobiphenyl and 2,4-dichlorobenzoic acid etc. in use, which are corrosive to metals Substances, but in the existing technology, there is still no better vulcanizing agent that can completely replace it. With the strengthening of social environmental awareness, people have been looking fo...

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Problems solved by technology

But although this non-halogenated benzoyl organic peroxide can partly replace bis(2,4-dichlorobenzoyl) as extrusion vulcanizing agent, it is different from bis(2,4-peroxide) Compared with dichlorobenzoyl), the thermal decomposition temperature of this type of non-halogen benzoyl organic peroxide is at least 30°C higher, which determines that under the existing hot air vulcanization process, this type of non-halogen Products vulcanized by benzoyl organic peroxides cannot be quickly set. When vulcanizing thin-walled tubes with a wall thickness of 0.5-1 mm, they will stick to the drying tunnel. When vulcanizing large-diameter and thick-walled tubes, indentations will occur on the surface, which seriously affects The surface quality of vulcanized products is greatly hindered, and the application of non-halogenated benzoyl organic peroxide vulcanizing agents is greatly hindered

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