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Special mold silica gel for simulated ancient building mold-rollover and preparation method of mold silica gel

An ancient building and silica gel technology, which is applied in the field of special mold silica gel for simulating ancient building molds and its preparation, can solve the problems of insufficient hardness, inability to balance hardness and mechanical strength, and insufficient mechanical strength, so as to increase hardness and increase flow. performance and mechanical properties, and the effect of increasing the number of overturning

Inactive Publication Date: 2021-08-31
惠州市永卓科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silica gel used in the market generally has the problem that the hardness and mechanical strength cannot be balanced. When the hardness reaches the hardness (Sauer 40A), the mechanical strength is not enough. After the mechanical properties meet the requirements, the hardness cannot reach the Sauer A40.

Method used

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  • Special mold silica gel for simulated ancient building mold-rollover and preparation method of mold silica gel
  • Special mold silica gel for simulated ancient building mold-rollover and preparation method of mold silica gel
  • Special mold silica gel for simulated ancient building mold-rollover and preparation method of mold silica gel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Component A includes: 80 parts of base rubber, 30 parts of vinyl silicone oil, 5 parts of MQ resin, 0.2 parts of castor catalyst; component B includes: 5 parts of hydrogen-containing silicone oil, 0.5 parts of inhibitor.

[0029] Wherein, the base rubber material is prepared by mixing alkoxy vinyl silicone oil, reinforcing filler and silazane treatment agent.

[0030] Further, in the base rubber material, there are 5 parts of alkoxy vinyl silicone oil, 25 parts of reinforcing filler, and 5 parts of silazane treatment agent.

[0031] Among them, the alkoxy vinyl silicone oil is a silicone oil with alkoxy groups at both ends and vinyl side chains, and its structural formula is

[0032] In the formula, m=50, n=3.

[0033] Further, the alkoxy vinyl silicone oil is prepared by mixing silicone oil with hydroxyl groups at both ends of vinyl groups on side chains and ethanol, and the mass ratio of silicone oil with hydroxyl groups at both ends of vinyl groups at side chains ...

Embodiment 2

[0046] The difference between this embodiment and embodiment 1 is:

[0047] Component A includes: 90 parts of base rubber, 45 parts of vinyl silicone oil, 15 parts of MQ resin, 0.3 parts of castor catalyst; component B includes: 6 parts of hydrogen-containing silicone oil, 0.7 parts of inhibitor.

[0048] Wherein, the mass ratio of the fumed silica and the vinyl MQ resin is 4:1.

[0049] Wherein, the gas-phase surface area of ​​the fumed silica is 350g / m 2 .

[0050] Among them, the viscosity of hydrogen-containing silicone oil is 50CS, and the hydrogen content is 0.30%.

[0051] Wherein, the mass ratio of alkoxy vinyl silicone oil to fumed silica is 1:4.

[0052] Wherein, the structural formula of alkoxy vinyl silicone oil is

[0053] In the formula, m=100, n=5.

[0054] The difference between the preparation method of this example and Example 1 is as follows: in step (1), after adding the raw materials into the reactor, react at 70°C for 6 hours, and then raise the te...

Embodiment 3

[0056] The difference between this embodiment and embodiment 1 is:

[0057] Component A includes: 100 parts of base rubber, 50 parts of vinyl silicone oil, 20 parts of MQ resin, 0.4 parts of castor catalyst; component B includes: 8 parts of hydrogen-containing silicone oil, 0.8 parts of inhibitor.

[0058] Wherein, the mass ratio of the fumed silica and the vinyl MQ resin is 5:1.

[0059] Wherein, the gas-phase surface area of ​​the fumed silica is 300g / m 2 .

[0060] Among them, the viscosity of hydrogen-containing silicone oil is 30CS, and the hydrogen content is 0.40%.

[0061] Wherein, the mass ratio of alkoxy vinyl silicone oil to fumed silica is 1:6.

[0062] Wherein, the structural formula of alkoxy vinyl silicone oil is

[0063] In the formula, m=200, n=5.

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Abstract

The invention relates to mold silica gel, and in particular, relates to special mold silica gel for simulated ancient building mold-rollover and a preparation method of the mold silica gel. The mold silica gel comprises a component A and a component B. The component A comprises a basic sizing material, vinyl silicone oil, MQ resin and a Karstedt catalyst; the component B comprises hydrogen-containing silicone oil and an inhibitor; and the basic sizing material is prepared by mixing alkoxy vinyl silicone oil, a reinforcing filler and a silazane treating agent. By using the alkoxy vinyl silicone oil, the cross-linking density of a silica gel system is increased, the hardness of a colloid is improved, the silica gel has good mechanical properties by filling the reinforcing filler, and the mold silica gel has a good supporting effect and improves the mold rollover times when ancient building materials are subjected to mold rollover.

Description

technical field [0001] The invention relates to mold silica gel products, in particular to a special mold silica gel for simulating ancient building turning molds and a preparation method thereof. Background technique [0002] In the industry of appreciating ancient buildings, TPU and TPE materials are currently widely used as special silica gel materials for simulating ancient buildings, which have the advantages of high hardness, good strength, and low cost. The market is also gradually shifting to the use of silicone materials to replace traditional TPU and TPE materials. Compared with TPU and TPE materials, the silicone material is used as the silicone material for the special mold for simulating ancient buildings. The texture is clearer, and the silicone is easier to release from the mold. However, the silica gel used in the market generally has the problem that the hardness and the mechanical strength cannot be balanced. When the hardness (Sauer 40A) is reached, the m...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K7/26
CPCC08L83/04C08L2205/035C08L2205/025C08K7/26
Inventor 王细平
Owner 惠州市永卓科技有限公司
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