Coupling adhesive for ultrasonic real-time broken rail monitoring system and preparation method and use method thereof

Abstract

The invention relates to the technical field of a coupling adhesive. The invention provides a coupling adhesive for an ultrasonic real-time broken rail monitoring system. When the coupling adhesive isused for an ultrasonic real-time broken rail monitoring system, vinyl silicone resin, hydrogen-containing silicone resin and an alkynol reaction inhibitor are subjected to hydrosilylation under the catalytic action of a catalyst; an organic silicon material obtained by hydrosilylation is characterized in that silicon atoms and oxygen atoms are alternately connected to form a skeleton; the organicgroups are connected with silicon atoms to form a polymer, an organic silicon resin structure contains both the organic groups and an inorganic structure and has an excellent adaptation degree to ultrasonic equipment and steel rails, and reflection loss of ultrasonic energy emitted by ultrasonic transduction is reduced to the minimum. Experimental results show that when the coupling adhesive provided by the invention is used for an ultrasonic real-time broken rail monitoring system, a film layer after reaction can meet the requirements of the ultrasonic real-time broken rail monitoring systemfor flexibility, ultrasonic reflection characteristics, bonding strength insulation characteristics after cold and hot impact and chemical resistance characteristics.

Description

Technical field

[0001] The invention relates to the technical field of coupling glue, and in particular to a coupling glue used in an ultrasonic real-time track broken monitoring system, and a preparation method and use method thereof. Background technique

[0002] Rail fractures on railway operating lines seriously threaten driving safety, and it is particularly important to achieve real-time rail fracture detection throughout the entire process. At present, the real-time rail broken monitoring system is divided into two methods: one adopts the track circuit method to measure the change of the rail resistance to monitor whether the rail is broken. The disadvantage is that the detection sensitivity is low, and it can only detect the complete rail fracture, and cannot detect the incomplete rail fracture. ; Another method uses ultrasonic as the method of detecting the rail fracture signal to measure the change in the amplitude of the ultrasonic signal in the rail to determine the r...

Examples

preparation example Construction

[0064] The present invention also provides a method for preparing coupling glue used in the ultrasonic real-time rail broken monitoring system, which includes the following steps:

[0065] (1) Mix vinyl silicone resin and hydrogen-containing silicone resin to obtain a premix;

[0066] (2) The premix obtained in the step (1) is ground with the acetylenic alcohol reaction inhibitor to obtain the main agent;

[0067] (3) Mixing the main agent obtained in the step (2) with the catalyst, and then degassing, to obtain the coupling glue for the ultrasonic real-time rail breaking monitoring system.

[0068] The invention mixes vinyl silicone resin and hydrogen-containing silicone resin to obtain a premix. The present invention does not specifically limit the mixing manner of the vinyl silicone resin and the hydrogen-containing silicone resin, and a mixing manner well known to those skilled in the art can be used to achieve uniform mixing of the vinyl silicone resin and the hydrogen-containing...

Embodiment 1

[0096] Material: vinyl-terminated silicone resin: [R 1 R 2 R 3 SiO 1 / 2 ] 2 [R 1 R 2 R 4 SiO 1 / 2 ] 3 [R 1 R 5 SiO 2 / 2 ] 4 [R 1 SiO 3 / 2 ] 5 , Where R 1 , R 2 , R 3 , R 4 And R 5 Respectively linear C5 alkane groups; (Formula I)

[0097] Hydrogen-containing silicone resin: [R 1 R 2 R 8 SiO 1 / 2 ] e [R 1 R 9 SiO 2 / 2 ] f [R 1 SiO 3 / 2 ] g , Where R 1 , R 2 They are linear C5 alkane groups, R 8 , R 9 They are linear C10 alkane groups, e=0.62, f=0.19, g=0.19; (Formula II)

[0098] Alkynol reaction inhibitor: 3-phenyl-1-buten-3-ol;

[0099] Catalyst: chloroplatinic acid.

[0100] Preparation method: In parts by weight, 80 parts of the vinyl-terminated silicone resin of formula I in the raw material and 30 parts of the hydrogen-containing silicone resin of formula II in the raw material are stirred in a dual planetary power mixer to obtain a premix, wherein the stirring temperature is 25℃, stirring time is 40min, stirring speed is 300r / min. The obtained premix and 1 part of the acetylenic alco...

Embodiment 2

[0102] In parts by weight, 90 parts of the vinyl-terminated silicone resin of formula I in the raw material of Example 1 and 30 parts of the hydrogen-containing silicone resin of formula II in the raw material of Example 1 are stirred in a dual planetary power mixer to obtain a premix, wherein The temperature is 25℃, the stirring time is 40min, and the stirring rate is 300r / min. The obtained premix and 1 part of the acetylenic alcohol reaction inhibitor (3-phenyl-1-buten-3-ol) are ground to a particle size of less than 6 μm using three rolls to obtain the main agent. The obtained main agent and 3 parts of the catalyst (chloroplatinic acid) are mixed using a double planetary power mixer, the mixing time is 20 minutes, after the mixing is completed, the present invention puts the mixed system on stand for 30 minutes for degassing to obtain ultrasonic Coupling glue for real-time broken rail monitoring system. Coating the obtained coupling glue for the ultrasonic real-time rail br...

Technical field

[0001] The invention relates to the technical field of coupling glue, and in particular to a coupling glue used in an ultrasonic real-time track broken monitoring system, and a preparation method and use method thereof. Background technique

[0002] Rail fractures on railway operating lines seriously threaten driving safety, and it is particularly important to achieve real-time rail fracture detection throughout the entire process. At present, the real-time rail broken monitoring system is divided into two methods: one adopts the track circuit method to measure the change of the rail resistance to monitor whether the rail is broken. The disadvantage is that the detection sensitivity is low, and it can only detect the complete rail fracture, and cannot detect the incomplete rail fracture. ; Another method uses ultrasonic as the method of detecting the rail fracture signal to measure the change in the amplitude of the ultrasonic signal in the rail to determine the r...

Examples

preparation example Construction

[0064] The present invention also provides a method for preparing coupling glue used in the ultrasonic real-time rail broken monitoring system, which includes the following steps:

[0065] (1) Mix vinyl silicone resin and hydrogen-containing silicone resin to obtain a premix;

[0066] (2) The premix obtained in the step (1) is ground with the acetylenic alcohol reaction inhibitor to obtain the main agent;

[0067] (3) Mixing the main agent obtained in the step (2) with the catalyst, and then degassing, to obtain the coupling glue for the ultrasonic real-time rail breaking monitoring system.

[0068] The invention mixes vinyl silicone resin and hydrogen-containing silicone resin to obtain a premix. The present invention does not specifically limit the mixing manner of the vinyl silicone resin and the hydrogen-containing silicone resin, and a mixing manner well known to those skilled in the art can be used to achieve uniform mixing of the vinyl silicone resin and the hydrogen-containing...

Embodiment 1

[0096] Material: vinyl-terminated silicone resin: [R 1 R 2 R 3 SiO 1 / 2 ] 2 [R 1 R 2 R 4 SiO 1 / 2 ] 3 [R 1 R 5 SiO 2 / 2 ] 4 [R 1 SiO 3 / 2 ] 5 , Where R 1 , R 2 , R 3 , R 4 And R 5 Respectively linear C5 alkane groups; (Formula I)

[0097] Hydrogen-containing silicone resin: [R 1 R 2 R 8 SiO 1 / 2 ] e [R 1 R 9 SiO 2 / 2 ] f [R 1 SiO 3 / 2 ] g , Where R 1 , R 2 They are linear C5 alkane groups, R 8 , R 9 They are linear C10 alkane groups, e=0.62, f=0.19, g=0.19; (Formula II)

[0098] Alkynol reaction inhibitor: 3-phenyl-1-buten-3-ol;

[0099] Catalyst: chloroplatinic acid.

[0100] Preparation method: In parts by weight, 80 parts of the vinyl-terminated silicone resin of formula I in the raw material and 30 parts of the hydrogen-containing silicone resin of formula II in the raw material are stirred in a dual planetary power mixer to obtain a premix, wherein the stirring temperature is 25℃, stirring time is 40min, stirring speed is 300r / min. The obtained premix and 1 part of the acetylenic alco...

Embodiment 2

[0102] In parts by weight, 90 parts of the vinyl-terminated silicone resin of formula I in the raw material of Example 1 and 30 parts of the hydrogen-containing silicone resin of formula II in the raw material of Example 1 are stirred in a dual planetary power mixer to obtain a premix, wherein The temperature is 25℃, the stirring time is 40min, and the stirring rate is 300r / min. The obtained premix and 1 part of the acetylenic alcohol reaction inhibitor (3-phenyl-1-buten-3-ol) are ground to a particle size of less than 6 μm using three rolls to obtain the main agent. The obtained main agent and 3 parts of the catalyst (chloroplatinic acid) are mixed using a double planetary power mixer, the mixing time is 20 minutes, after the mixing is completed, the present invention puts the mixed system on stand for 30 minutes for degassing to obtain ultrasonic Coupling glue for real-time broken rail monitoring system. Coating the obtained coupling glue for the ultrasonic real-time rail br...

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