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Fatigue-resistant ultraviolet-resistant one-component dealcoholization type silicone structure sealant and preparation method thereof

A UV single-dealcoholization type technology, applied in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of anti-fatigue, anti-ultraviolet has not been reported, can not guarantee the excellent performance, and restricts the wide range of sealants Use and other issues to achieve good economic and social benefits, low cost, and good mechanical properties

Active Publication Date: 2016-03-09
GUANGXI HUANA NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adds a curing accelerator to achieve rapid curing of alcohol-based adhesives, but there are problems such as poor product stability, large dosage of chemicals, high cost, and complicated operations.
[0006] At present, there are many one-component dealcoholized silicone structural sealants, but most of them only improve one aspect of their performance and cannot guarantee the excellence of other properties. The research on ketone structural sealants has not been reported yet, which restricts the wide application of sealants in the insulation cable and automotive industries

Method used

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  • Fatigue-resistant ultraviolet-resistant one-component dealcoholization type silicone structure sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An anti-fatigue, anti-ultraviolet one-component dealcoholized silicone structural sealant, which is composed of the following raw materials in parts by weight: 1000g of hydroxyl-terminated polydimethylsiloxane with a viscosity of 20000Pa·s, 900g of active nano-calcium carbonate, 200 g of fumed silica, 70 g of simethicone oil with a viscosity of 100 Pa s, 50 g of methyltrimethoxysilane crosslinking agent, 20 g of aluminum-zirconium stearate coupling agent, 22 g of siloxane titanate, and dilauryl 1.6g of dibutyltin acid constitutes the catalyst and 6g of polyether silicone oil deep layer curing agent.

[0034] Preparation method of one-component dealcoholized silicone structural sealant:

[0035] (1) Add 1000g of hydroxyl-terminated polydimethylsiloxane, 900g of activated nano-calcium carbonate, 200g of fumed silica, and 70g of dimethyl silicone oil into a strong dispersion mixer. Stirring and dehydration for 4h at 500rpm to obtain mixed raw materials;

[0036] (2) Cool...

Embodiment 2

[0038] An anti-fatigue and anti-ultraviolet single-component dealcoholized silicone structural sealant, which is composed of the following raw materials in parts by weight: 1000g of hydroxyl-terminated polydimethylsiloxane with a viscosity of 20000Pa·s, 600g of active nano-calcium carbonate, Composed of 200g of fumed silica, 50g of simethicone oil with a viscosity of 500Pa·s, 40g of tetramethoxysilane crosslinking agent, 10g of aluminum-zirconium methacrylate coupling agent, 5g of dibutyltin dilaurate and 10g of citric acid Catalyst, polyethylene oxide deep curing agent 6g.

[0039] Preparation method of one-component dealcoholized silicone structural sealant:

[0040] (1) Add 1000g of hydroxyl-terminated polydimethylsiloxane, 600g of activated nano-calcium carbonate, 200g of fumed silica, and 50g of dimethyl silicone oil into a strong dispersion mixer. Stirring and dehydration for 5 hours at 300 rpm to obtain mixed raw materials;

[0041] (2) Cool the mixed raw materials to...

Embodiment 3

[0043] An anti-fatigue, anti-ultraviolet one-component dealcoholized silicone structural sealant, which is composed of the following raw materials in parts by weight: 1000g of hydroxyl-terminated polydimethylsiloxane with a viscosity of 50000Pa·s, 800g of active nano-calcium carbonate, 300 g of fumed silica, 120 g of simethicone oil with a viscosity of 200 Pa s, 30 g of trimethylsilane crosslinking agent, 8 g of aluminum oxalate-zirconium coupling agent, 10 g of silyl titanate catalyst, Polyethylene glycol deep curing agent 10g.

[0044] Preparation method of one-component dealcoholized silicone structural sealant:

[0045] (1) Add 1000g of hydroxyl-terminated polydimethylsiloxane, 800g of activated nano-calcium carbonate, 300g of fumed silica, and 120g of dimethyl silicone oil into a strong dispersion mixer. Stirring and dehydration for 3 hours at 800 rpm to obtain mixed raw materials;

[0046] (2) Cool the mixed raw materials to 40°C, and add 30 g of trimethylsilane orthos...

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Abstract

The present invention discloses a fatigue-resistant ultraviolet-resistant one-component dealcoholization type silicone structure sealant and a preparation method thereof, the sealant comprises the following raw materials in parts by weight: 100 parts of terminal hydroxyl polydimethylsiloxane, 60 to 120 parts of a reinforcing filler, 5 to 15 parts of a plasticizer, 3 to 8 parts of a crosslinking agent, 0.2 to 2 parts of a bi-metal aluminum-zirconium coupling agent, 0.5 to 3 parts of a catalyst and 0.5 to 2 parts of a deep layer curing agent. The bi-metal aluminum-zirconium coupling agent is one or more agents of aluminium adipate-zirconium coupling agent, aluminium itaconate-zirconium coupling agent and aluminium stearate-zirconium coupling agent. The fatigue-resistant ultraviolet-resistant one-component dealcoholization type silicone structure sealant has good mechanical properties and good storage stability, has the characteristics of being not easy to turn yellow and fast to cure, also has fatigue resistance, ultraviolet irradiation resistance and other performances, is suitable for being widely used in insulated cable and automotive industries, and has good economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to an anti-fatigue, anti-ultraviolet single-component dealcoholized silicone structural sealant and a preparation method. Background technique [0002] Organic silicone structural sealant is a new type of polymer sealing material that appeared in the middle and late 20th century. Its molecular main chain is composed of silicon and oxygen atoms arranged alternately. This structure is similar to inorganic silicate, thus giving silicone Structural sealants have excellent weather resistance properties, such as good thermal stability, cold resistance and UV resistance. One-component silicone sealant has a remarkable feature. Its vulcanization process only needs moisture at room temperature and can be carried out without heating and pressure. It is easy to operate and is widely used in electronic appliances, construction, aviation, and automobiles. And medical and health materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J11/08C09J11/04C09J11/06
CPCC08K2201/003C08K2201/006C08K2201/011C08L2205/02C09J11/04C09J11/06C09J11/08C09J183/06C08L83/04C08K13/06C08K9/04C08K2003/265C08K3/36C08K5/092
Inventor 覃玲意朱勇黄海昌林誉盛刘旭增
Owner GUANGXI HUANA NEW MATERIALS TECH CO LTD
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