Preparation process of silicone sealant base stock

A technology for preparation process and base material, applied in the direction of adhesives, etc., can solve the problems of large fluctuation in the quality of base material, the appearance of base material is not delicate, and the process time is long. Effect

Inactive Publication Date: 2015-12-16
ZHEJIANG JOINLEADER SILICON
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Among them, high-speed dispersing machine is used for production, which has low production capacity, high energy consumption and long process time; vacuum kneader is used for production, process time is long, and the appearance of the base material is not delicate; automatic screw production line is used for production, and the feeding is unstable, which leads to the quality of the base material. Large fluctuations and large investment in equipment

Method used

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  • Preparation process of silicone sealant base stock

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Effect test

Embodiment Construction

[0016] refer to figure 1 , the production preparation technology of a kind of silicone sealant base material of the present invention, comprises the steps:

[0017] A Rough mixing: Put the materials used for preparing the base material into a vacuum kneader, and use the vacuum kneader to roughly mix the materials to make a rough mix base material;

[0018] B dumping: put the coarse mixed base material into the transfer storage tank through the gear pump for storage and backup;

[0019] C taking material: use the gear pump to drive the rough mixed base material in the transfer storage tank into the twin-screw extruder;

[0020] D Refining: In the twin-screw extruder, the rough mixed base material is refined and dehydrated and defoamed through the twin-screw;

[0021] E cooling: the refined base material is cooled through a cooler to obtain a high-quality base material;

[0022] The materials in the rough mixing step A need to be screened and put into a vacuum kneader for rou...

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Abstract

The invention discloses a preparation process of a silicone sealant base stock. The preparation process comprises the following steps: A rough mixing: materials used for preparing the base stock are put in a vacuum kneading machine, and are roughly mixed by the vacuum kneading machine to prepare a roughly mixed base stock; B transitional storage: the roughly mixed base stock is put in a transitional storage tank for future use through a gear pump; C material taking: the roughly mixed base stock in the transitional storage tank is put in a double-screw extruder by the gear pump; D refining: the roughly mixed base stock is finely mixed, dehydrated and deaerated by double screw rods in the double-screw extruder; and E cooling: the refined base stock is cooled through a cooler to prepare the high-quality base stock. The process prepares the silicone sealant base stock by combining the vacuum kneading machine with the double-screw extruder, so that the base stock preparation time is shortened, the energy consumption and the equipment investment are reduced, and the base stock quality can be effectively improved.

Description

【Technical field】 [0001] The invention relates to the technical field of silicone sealant production, in particular to the technical field of a production and preparation process of a silicone sealant base material. 【Background technique】 [0002] Silicone sealant is a paste made of polydimethylsiloxane as the main raw material, supplemented with crosslinking agent, filler, plasticizer, coupling agent, and catalyst in a vacuum state. Exposure to water in the air should cure to form an elastic silicone rubber. Silicone structural sealant is a special kind of glass glue, which can be directly used for metal and glass structure or non-structural bonding assembly of glass curtain wall. Therefore, the quality requirements and product grade of silicone structural sealant are glass glue. The highest among them has the highest market price. Main application of silicone structural sealant: It is mainly used for structural or non-structural bonding between metal and glass of glass c...

Claims

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Application Information

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IPC IPC(8): B29B7/74C09J183/04
Inventor 张海潮
Owner ZHEJIANG JOINLEADER SILICON
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