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Transparent silica gel strip

A silicone strip, transparent technology, used in adhesives, film/sheet release coatings, film/sheet adhesives, etc., can solve the difficulty of sealing strip installation, environmentally friendly plasticizers, easy to age and brittle, etc. problems, to achieve outstanding economic benefits, meet functional requirements, and facilitate disassembly and maintenance.

Pending Publication Date: 2021-11-30
科建高分子材料(上海)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some plastic sealing strips are easy to age and become brittle, and at the same time contain non-environmental plasticizers, odors and other problems; some sealing strips are difficult to install on old doors and windows, and even need to be replaced; the glue layer and the base layer are prone to separation; Stretching is easy to turn white, the resilience is poor, and some parts appear frosting, yellowing, and strong smell
As stated in CN113150470A, the sealing strip contains o-phthalic plasticizers; such as CN207454766U, this type of sealing strip needs to be matched with doors and windows of corresponding specifications, and cannot be universally applicable to a wide range of existing doors, windows, and bathrooms, and is matched with double-sided adhesive tape to form a self-adhesive layer , can quickly bond different types of doors and windows

Method used

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  • Transparent silica gel strip
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The silicone sealing strip of the present invention comprises 4 layers:

[0029] The first layer: release paper with a thickness of 0.1mm; the second layer: acrylic glue on tissue paper with a thickness of 0.3mm; the third layer: 770 primer with a glue amount of 0.1mm; the fourth layer: including 70-degree precipitated silicon Rubber masterbatch (24 parts by weight / m) and platinum vulcanizing agent BP-28 (0.3 parts by weight / m).

[0030] Use an open mill (with cooling function) to process 70-degree precipitated silicone rubber masterbatch, process 10-20kg of the masterbatch each time, first adjust the roller distance to about 10mm, feed, and add platinum vulcanizing agent BP-28 after 5 thin passes , continue to thin pass 5 times, the sheet is cooled, added to the extruder, extruded 0.8mm thin sheet and different width specifications, and vulcanized through a 20m drying tunnel (temperature 200-300°C) (specifically, the vulcanization temperature is 200°C in the first stag...

Embodiment 2

[0032] The silicone sealing strip of the present invention comprises 4 layers:

[0033] The first layer: release paper with a thickness of 0.1mm; the second layer: acrylic glue on tissue paper with a thickness of 0.3mm; the third layer: 770 primer with a glue amount of 0.1mm; the fourth layer: including 60-degree precipitated silicon Rubber masterbatch (24 parts by weight / m) and platinum vulcanizing agent BP-28 (0.3 parts by weight / m).

[0034] Use an open mill (with cooling function) to process 60-degree precipitated silicone rubber masterbatch, process 10-20kg of the masterbatch each time, first adjust the roller distance to about 10mm, feed the material, and add platinum vulcanizing agent BP-28 after 5 thin passes , continue to thin pass 5 times, the sheet is cooled, added to the extruder, extruded 0.8mm thin sheet and different width specifications, and vulcanized through a 20m drying tunnel (temperature 200-300°C) (specifically, the vulcanization temperature is 200°C in t...

Embodiment 3

[0036] The silicone sealing strip of the present invention comprises 4 layers:

[0037] The first layer: 0.1mm release paper; the second layer: cotton paper acrylic glue; the third layer: 770 primer with a glue amount of 0.1mm; the fourth layer: including 70-degree gas-phase silicone rubber masterbatch (24 weight parts / m) and platinum vulcanizing agent BP-28 (0.3 parts by weight / m).

[0038] Use an open mill (with cooling function) to process 70-degree gas-phase silicone rubber masterbatch, process 10-20kg of the masterbatch each time, first adjust the roller distance to about 10mm, feed, and add platinum vulcanizing agent BP-28 after 5 thin passes , continue to thin pass 5 times, the sheet is cooled, added to the extruder, extruded 0.8mm thin sheet and different width specifications, and vulcanized through a 20m drying tunnel (temperature 200-300°C) (specifically, the vulcanization temperature is 200°C in the first stage; the vulcanization temperature 2 stages of 250°C; vulc...

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Abstract

The invention provides a transparent silica gel strip. The silica gel strip sequentially comprises a first layer, namely, release paper; a second layer, namely, cotton paper acrylic acid glue; a third layer, namely a silica gel primer; and a fourth layer prepared from 10 to 50 parts of rubber silicone rubber master batch and and 0.1-5 parts of a vulcanizing agent by weight. The silica gel sealing strip disclosed by the invention is a food-grade silicone oil plasticizer, is more environment-friendly and safer, does not need to additionally add a flame retardant, and has a flame-retardant effect; realizes long-term elasticity, sound insulation and noise reduction; and adopts a double-faced adhesive tape design, and is convenient to use and reliable in bonding.

Description

technical field [0001] The invention relates to a silica gel strip, in particular to a transparent silica gel strip. Background technique [0002] There are gaps in the existing doors and windows, which are not easy to close tightly, resulting in the entry of dust and insects. And when the doors and windows are closed, there will be a collision sound, which will cause noise and damage the doors and windows at the same time. The silicone sealing strip is an environmentally friendly material with high aging resistance and low temperature resistance, and it will not harden in cold environments. It is also equipped with acrylic double-sided adhesive, which has good viscosity and is very firm. It is widely used around doors and windows, and can play the role of sealing dust, anti-collision and blocking insects. However, some plastic sealing strips are easy to age and become brittle, and at the same time contain non-environmental plasticizers, odors and other problems; some seal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/38
CPCC09J7/25C09J7/385C09J7/50C09J2483/006
Inventor 许瑞环陈烨邹明选吴海涛
Owner 科建高分子材料(上海)股份有限公司
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