Thermal conductive adhesive solidification method

A curing method and technology of thermally conductive adhesive, which is applied to the device for coating liquid on the surface, pretreatment of the surface, coating, etc., can solve the problem of thermally conductive adhesive cracks, air bubbles, reducing thermal conductivity, bonding strength and adhesion of thermally conductive adhesive, etc. problems, to achieve the effect of improving thermal conductivity

Inactive Publication Date: 2020-05-19
柳州致盛汽车电子有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the defects in the existing curing technology of thermally conductive adhesive itself and the need to combine automotive sensors, therefore, in the production process of automotive sensors, when dispensing thermally conductive adhesive to automotive sensor elements, and using conventional thermally conductive adhesive Curing method When curing, it is found that cracks and bubbles appear in the part of the thermally conductive adhesive after curing, which reduces the thermal conductivity, bonding strength and adhesion of the thermally conductive adhesive in this part, and it is difficult to meet the production quality requirements of automotive sensors.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thermal conductive adhesive solidification method
  • Thermal conductive adhesive solidification method
  • Thermal conductive adhesive solidification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The curing method of the thermally conductive adhesive includes the following steps:

[0033] A. Raise the ambient temperature of the automotive sensor with thermal adhesive to 180°C in 3 hours;

[0034] B. Next, maintain the ambient temperature of the automotive sensor with thermal adhesive at 180°C and keep it warm for 4 hours;

[0035] C. Next, raise the temperature of the environment where the product with thermal adhesive is used to 250°C;

[0036] D. Next, raise the temperature of the environment where the automotive sensor with heat-conducting adhesive is used to 800°C in 2.5 hours;

[0037] E. Next, maintain the ambient temperature of the automotive sensor with thermal adhesive at 800°C and keep it warm for 0.2 hours;

[0038] F. Next, lower the temperature of the environment where the automotive sensor with thermal adhesive is used to 150°C in 8 hours.

[0039] Observing the thermally conductive adhesive on the automotive sensor after curing in this embodime...

Embodiment 2

[0041] The curing method of the thermally conductive adhesive includes the following steps:

[0042] A. Raise the ambient temperature of the automotive sensor with thermal adhesive to 185°C in 2 hours;

[0043] B. Next, maintain the ambient temperature of the automotive sensor with thermal adhesive at 185°C and keep it warm for 3 hours;

[0044] C. Next, raise the ambient temperature of the automotive sensor with thermal adhesive to 255°C in 1.5 hours;

[0045] D. Next, raise the temperature of the environment where the automotive sensor with heat-conducting glue is used to 805°C in 2 hours;

[0046] E. Next, maintain the ambient temperature of the automotive sensor with thermal adhesive at 805°C and keep it warm for 0.1 hour;

[0047] F. Next, lower the temperature of the environment where the automotive sensor with heat-conducting glue is used to 155°C in 7 hours.

[0048] Observing the thermally conductive adhesive on the automotive sensor after curing in this embodiment...

Embodiment 3

[0050] The curing method of the thermally conductive adhesive includes the following steps:

[0051] A. Raise the ambient temperature of the automotive sensor with thermal adhesive to 175°C in 2.5 hours;

[0052] B. Next, maintain the ambient temperature of the automotive sensor with thermal adhesive at 175°C and keep it warm for 2 hours;

[0053] C. Next, raise the temperature of the environment where the automotive sensor with thermal adhesive is used to 245°C in 1 hour;

[0054] D. Next, raise the ambient temperature of the automotive sensor with thermal adhesive to 795°C in 1.5 hours;

[0055] E. Next, maintain the ambient temperature of the automotive sensor with thermal adhesive at 795°C and keep it warm for 0.2 hours;

[0056] F. Next, lower the ambient temperature of the automotive sensor with thermal adhesive to 145°C in 6 hours.

[0057] Observing the thermally conductive adhesive on the automotive sensor after curing in this embodiment, it is found that there are...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a thermal conductive adhesive solidification method. The thermal conductive adhesive solidification method comprises the steps that the temperature of the environment where a product using a thermal conductive adhesive is located is increased to 180+ / -5 DEG C; then, the temperature of the environment where the product using the thermal conductive adhesive is located is keptat 180+ / -5 DEG C, and heat preservation treatment is conducted; the temperature of the environment where the product using the thermal conductive adhesive is located is increased to 250+ / -5 DEG C; the temperature of the environment where the product using the thermal conductive adhesive is located is increased to 800+ / -5 DEG C; the temperature of the environment where the product using the thermal conductive adhesive is located is kept at 800+ / -5 DEG C, and heat preservation treatment is conducted; and the temperature of the environment where the product using the thermal conductive adhesiveis located is lowered to 150+ / -5 DEG C. According to the thermal conductive adhesive solidification method, by adjusting and strictly controlling the temperature and time of each stage in the solidification process, the solidified thermal conductive adhesive is free of cracks, bubbles and other undesirable phenomena, and accordingly, the thermal conductivity, adhesive strength and adhesive force of the thermal conductive adhesive are ensured and improved.

Description

technical field [0001] The invention belongs to the technical field of heat-conducting materials, and in particular relates to a curing method of heat-conducting adhesive. Background technique [0002] The vehicle sensor is the input device of the computer system of the vehicle. It converts the information of various working conditions during the operation of the vehicle, such as vehicle speed, temperature of various media, engine operating conditions, etc., into electrical signals and sends them to the computer so that the engine is in the best state. working status. [0003] Thermally conductive adhesive is a functional product used to bond heat dissipation devices and other power consumption components. This thermally conductive adhesive usually has extremely strong adhesive strength, good adhesion and thermal conductivity, so it is widely used in The production of electronic components, such as the production of sensors for automobiles, uses thermally conductive adhesiv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B05D3/02
CPCB05D3/0209B05D3/0254
Inventor 邓斌肖琳黄恒
Owner 柳州致盛汽车电子有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products