UP (unsaturated polyester) /alumina thermal conductive insulating material with longer storage life and preparation method of UP/alumina thermal conductive insulating material

Abstract

The invention discloses an UP (unsaturated polyester) / alumina thermal conductive insulating material with longer storage life. The thermal conductive insulating material is prepared from the following raw materials: UP, alumina and an initiator, wherein the weight ratio of the UP to alumina is 1 to (3 to 4) and the addition amount of the initiator is 0.5 to 3 percent of the weight of the UP; a silane coupling agent and propylene glycol are also added into the thermal conductive insulating material; the addition amount of the silane coupling agent is 0.5 to 3 percent of the weight of alumina and the addition amount of propylene glycol is 0.5 to 1 percent of the weight of the UP. The content of hydroxyl is greater than or equal to 99.99 percent in the molecular chain terminal group of the UP and alumina is subjected to drying treatment in advance. According to a preparation method of the UP / alumina thermal conductive insulating material with the longer storage life, disclosed by the invention, by specifically selecting and improving a formula of the selected raw materials and optimizing a processing treatment method, a high polymer composite material which has the characteristics ofgreatly-prolonged storage time, excellent thermal conductivity and excellent insulating properties is prepared, and further the requirements of a thermal interface and packaging material industrial production materials are met.

Description

technical field

[0001] The invention relates to the technical field of thermally conductive and insulating polymer composite materials, in particular to an unsaturated polyester / alumina thermally conductive and insulating polymer composite material that can be stored for a long time and a preparation method thereof. Background technique

[0002] With the development of integration technology and micro-encapsulation technology, electronic components and electronic equipment are developing in the direction of miniaturization and miniaturization, and the heat generated by electronic equipment is rapidly accumulating and increasing. In order to ensure that electronic components can still work normally with high reliability under the ambient temperature of use, it is necessary to develop thermally conductive and insulating polymer composite materials as thermal interface and packaging materials, so as to quickly transfer the heat of heating elements to heat dissipation equipment a...

Examples

preparation example Construction

[0026] A preparation method of a UP / alumina thermally conductive insulating material with a longer storage period, comprising the following steps:

[0027] Step 1. According to the above weight ratio, weigh UP, alumina, initiator, silane coupling agent and propylene glycol in sequence, and set aside;

[0028] Step 2. Place the UP and alumina weighed in step 1 in a vacuum drying oven for drying and dehydration treatment for 20-30 hours. After taking them out, dry them and store them for later use;

[0029] Step 3, add the UP and alumina obtained after the drying and water removal treatment in step 2, and the initiator, silane coupling agent and propylene glycol weighed in step 1 into the kneader, and mix at room temperature while the kneader is kept sealed. Refining for 25-35 minutes, the finished heat-conducting insulating material is obtained, sealed and stored in a cool place.

[0030] In the technical scheme of the present invention, in order to prepare the storage-resista...

Embodiment 1

[0033] This embodiment mainly tests and experiments the machinability of existing heat-conducting and insulating materials under different storage times.

[0034] The raw materials used are: carboxyl-terminated UP (that is, UP commonly used in the prior art), A1 2 o 3 , Initiator dibenzoyl peroxide or tert-butyl perbenzoate or tert-butyl peracetate.

[0035] This embodiment includes nine experimental groups in total

[0036] ①Carboxy-terminated UP, A1 2 o 3 , UP quality 0.5% dibenzoyl peroxide;

[0037] ②Carboxy-terminated UP, A1 2 o 3 , UP quality 1.5% dibenzoyl peroxide;

[0038] ③Carboxy-terminated UP, A1 2 o 3 , UP quality 3% dibenzoyl peroxide;

[0039] ④ carboxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 0.5% UP quality;

[0040] ⑤Carboxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 1.5% UP quality;

[0041] ⑥Carboxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with UP quality 3%;

[0042] ⑦Carboxy-terminated UP, A1 2 o 3 , te...

Embodiment 2

[0051] In this embodiment, the main test and experiment is the processability of the thermally conductive insulating material prepared by using hydroxyl-terminated UP as a raw material under different storage times.

[0052] The raw materials used are: hydroxyl-terminated UP, A1 2 o 3 , Initiator dibenzoyl peroxide or tert-butyl perbenzoate or tert-butyl peracetate.

[0053] This embodiment includes nine experimental groups in total

[0054] ①Hydroxy-terminated UP, A1 2 o 3 , UP quality 0.5% dibenzoyl peroxide;

[0055] ② Hydroxyl-terminated UP, A1 2 o 3 , UP quality 1.5% dibenzoyl peroxide;

[0056] ③Hydroxy-terminated UP, A1 2 o 3 , UP quality 3% dibenzoyl peroxide;

[0057] ④Hydroxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 0.5% UP quality;

[0058] ⑤ Hydroxyl-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 1.5% UP quality;

[0059] ⑥ Hydroxyl-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with UP quality 3%;

[0060] ⑦Hydroxy-terminat...

technical field

[0001] The invention relates to the technical field of thermally conductive and insulating polymer composite materials, in particular to an unsaturated polyester / alumina thermally conductive and insulating polymer composite material that can be stored for a long time and a preparation method thereof. Background technique

[0002] With the development of integration technology and micro-encapsulation technology, electronic components and electronic equipment are developing in the direction of miniaturization and miniaturization, and the heat generated by electronic equipment is rapidly accumulating and increasing. In order to ensure that electronic components can still work normally with high reliability under the ambient temperature of use, it is necessary to develop thermally conductive and insulating polymer composite materials as thermal interface and packaging materials, so as to quickly transfer the heat of heating elements to heat dissipation equipment a...

Examples

preparation example Construction

[0026] A preparation method of a UP / alumina thermally conductive insulating material with a longer storage period, comprising the following steps:

[0027] Step 1. According to the above weight ratio, weigh UP, alumina, initiator, silane coupling agent and propylene glycol in sequence, and set aside;

[0028] Step 2. Place the UP and alumina weighed in step 1 in a vacuum drying oven for drying and dehydration treatment for 20-30 hours. After taking them out, dry them and store them for later use;

[0029] Step 3, add the UP and alumina obtained after the drying and water removal treatment in step 2, and the initiator, silane coupling agent and propylene glycol weighed in step 1 into the kneader, and mix at room temperature while the kneader is kept sealed. Refining for 25-35 minutes, the finished heat-conducting insulating material is obtained, sealed and stored in a cool place.

[0030] In the technical scheme of the present invention, in order to prepare the storage-resista...

Embodiment 1

[0033] This embodiment mainly tests and experiments the machinability of existing heat-conducting and insulating materials under different storage times.

[0034] The raw materials used are: carboxyl-terminated UP (that is, UP commonly used in the prior art), A1 2 o 3 , Initiator dibenzoyl peroxide or tert-butyl perbenzoate or tert-butyl peracetate.

[0035] This embodiment includes nine experimental groups in total

[0036] ①Carboxy-terminated UP, A1 2 o 3 , UP quality 0.5% dibenzoyl peroxide;

[0037] ②Carboxy-terminated UP, A1 2 o 3 , UP quality 1.5% dibenzoyl peroxide;

[0038] ③Carboxy-terminated UP, A1 2 o 3 , UP quality 3% dibenzoyl peroxide;

[0039] ④ carboxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 0.5% UP quality;

[0040] ⑤Carboxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 1.5% UP quality;

[0041] ⑥Carboxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with UP quality 3%;

[0042] ⑦Carboxy-terminated UP, A1 2 o 3 , te...

Embodiment 2

[0051] In this embodiment, the main test and experiment is the processability of the thermally conductive insulating material prepared by using hydroxyl-terminated UP as a raw material under different storage times.

[0052] The raw materials used are: hydroxyl-terminated UP, A1 2 o 3 , Initiator dibenzoyl peroxide or tert-butyl perbenzoate or tert-butyl peracetate.

[0053] This embodiment includes nine experimental groups in total

[0054] ①Hydroxy-terminated UP, A1 2 o 3 , UP quality 0.5% dibenzoyl peroxide;

[0055] ② Hydroxyl-terminated UP, A1 2 o 3 , UP quality 1.5% dibenzoyl peroxide;

[0056] ③Hydroxy-terminated UP, A1 2 o 3 , UP quality 3% dibenzoyl peroxide;

[0057] ④Hydroxy-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 0.5% UP quality;

[0058] ⑤ Hydroxyl-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with 1.5% UP quality;

[0059] ⑥ Hydroxyl-terminated UP, A1 2 o 3 , tert-butyl perbenzoate with UP quality 3%;

[0060] ⑦Hydroxy-terminat...

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