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Silicone rubber putty and preparation method thereof

A silicone rubber and putty technology, applied in chemical instruments and methods, other chemical processes, filling slurry, etc., can solve the problems of short service life of putty, non-compliance with environmental protection requirements, poor sealing performance, etc., so that it is not easy to weather and easy to remove , the effect of not easy to deform

Active Publication Date: 2012-03-28
SHENZHEN CITY SQUARE SILICONE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a silicone rubber putty that is not deformed and corroded during use, can be recycled and can be made into various colors and shapes and its preparation method to solve the traditional problem of poor sealing performance and long service life of the putty. Short, do not meet environmental protection requirements and other issues

Method used

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  • Silicone rubber putty and preparation method thereof
  • Silicone rubber putty and preparation method thereof

Examples

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preparation example Construction

[0040] The preparation method of silicone rubber putty of the present invention comprises the steps:

[0041] Step 1: the mass fraction is 70-80% silicone rubber raw rubber (vinyl content is 0.01-0.2%), 0.1-1% boric acid, 0.1-10% AlCl 3 or FeCl 3 , Put 5-30% of inorganic filler into the kneader and stir evenly, heat to 130°C-140°C, knead until the material is drawn, cool to room temperature, add 0.1-10% softener, and neutralize the adsorbent in the Mix well on a double-roller machine to obtain rubber compound A.

[0042] The resulting compound is characterized by its excellent ductility at low shear rates and its natural leveling if placed on a flat surface. But not only that, its biggest characteristic is that its viscosity will increase dramatically with the change of shear rate, showing a non-linear change. When gently stretched by hand, a very long silk thread can be pulled out, similar to the common chewing gum in life. When stretched quickly by hand, it will break, a...

Embodiment 1

[0049] 125kg of raw rubber (vinyl content of 0.08%, weight average molecular weight of 650,000), 1.2kg of AlCl 3 , 1.0 kg of boric acid, 20 kg of fumed silica (Wacker chemical N20) and 0.5 kg of H 2 O was put into a kneader with a volume of 300L and stirred evenly, heated to 135°C and kneaded until drawing, discharged, after cooling, added 1% triglyceride and 2.5kg of MgO and kneaded on a double-roller to obtain a rubber compound A1 .

Embodiment 2

[0051] 125kg of raw rubber (vinyl content of 0.08%, weight average molecular weight of 650,000), 1.0kg of FeCl 3 , 1.0 kg of boric acid, 20 kg of fumed silica (Wacker chemical N20) and 0.5 kg of H 2 O was put into a 300L kneader and stirred evenly, heated to 135°C and kneaded until drawing, discharged, and after cooling, 1% monomolecular glyceride and 2.5kg of MgO were added and kneaded evenly on a double-roller to obtain rubber compound A2.

[0052] Example 1

[0053] Put 260kg of raw rubber (vinyl content of 0.20%, weight average molecular weight of 650,000), 130kg of fumed silica (Wacker chemical N20) and 26kg of hydroxyl silicone oil into a 300L kneader and stir evenly, and heat to 150 ℃, keep 3h, discharge, after cooling, knead on a kneader to get the rubber mix B. Then, the mixed rubber A1 and the mixed rubber B obtained in the relevant example 1 were mixed uniformly on a two-roll kneader at a mass ratio of 3:7, and a silicone rubber putty that would not be structured ...

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Abstract

The invention relates to a silicone rubber putty, comprising ingredients: 100 wt% of polydimethylsiloxane rubber, 1-400 wt% of inorganic filler, 1-20 wt% of constitution control agent, 1-10 wt% of proton acid catalyst, and 0.01-10 wt% of softening agent. The invention further relates to a method of preparing the silicone rubber putty. The silicone rubber putty of the invention does not deform when in use, can be recycled, and prepared into various colors and shapes, and can be used for sealing door and window glass or filling construction joints, e.g., decorating marbles. The organic siliconerubber putty can be formed at a low pressure, is difficult to deform after being pasted on the door and window glass upon forming, difficult to weather, environment-friendly, recyclable, and can be prepared into various colors and shapes.

Description

technical field [0001] The invention relates to a silicone rubber product and a preparation method thereof, in particular to a silicone rubber putty which is non-deformable, corrosion-free, recyclable and can be made into various colors and shapes and a preparation method thereof. Background technique [0002] At present, my country's building energy consumption has accounted for 27.5% of the final energy consumption of the whole society, and the energy lost through the gaps around doors and windows that are not tightly closed usually accounts for about 37-40% of building energy consumption. Therefore, it is very important to improve the sealing performance between the window frame and the glass, especially between the window frame and the window sash. The way to seal the gap between the glass and the window frame on doors and windows is to use putty to seal. Putty plays an important role in waterproofing, sealing and energy saving in doors and windows, such as sound insulat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C09K3/10C09D7/61C09D7/63
CPCC09D5/34C09D7/1233C09D7/1216C08L83/04C09D7/61C09D7/63
Inventor 李彦民
Owner SHENZHEN CITY SQUARE SILICONE MATERIALS