Summary of the invention
The invention discloses a kind of PET film having ball-type graphite linings, it has easy to use, water-tolerant, is pasted onto electronic product surface and can accelerate electronic product radiating, effectively reduce electronic product temperature;Using method is easy, identical with common PET double faced adhesive tape or one side glue.
The technical scheme that the present invention provides is as follows:
A kind of PET film having ball-type graphite linings, including PET film and the ball-type graphite linings that is attached to its surface.
Further, described ball-type graphite linings is by the rolling of ball-type graphite slurry, precipitates or be coated on PET film surface, after overbaking, is formed with the PET film of ball-type graphite linings.
Prepare ball-type graphite slurry in the above-mentioned PET film having ball-type graphite linings, be that the raw material including following mass parts is prepared from: the ball-type graphite of 60-65 part, the sheet material graphite of 5-10 part, the coalescents of 0.5-5 part, the cosolvent of 0.5-5 part, the dispersant of 0.5-3 part, the defoamer of 0.1-1 part, the thickener of 0.1-3 part, the pH adjusting agent of 0-1 part, the mould inhibitor of 0-2 part, the preservative of 0-1 part, the levelling agent of 0-2 part, the epoxy radicals acrylic acid of 20-30 part;The acrylic acid substitute of above-mentioned epoxy radicals is water soluble acrylic acid or Epocryl.
Further, described ball-type graphite slurry, is that the raw material including following mass parts is prepared from: the ball-type graphite of 60-65 part, the sheet material graphite of 5-10 part, the coalescents of 0.5-1 part, the cosolvent of 0.5-1.5 part, the dispersant of 0.5-1.2 part, the defoamer of 0.2-0.5 part, the thickener of 1.7-2 part, the pH adjusting agent of 0.2-0.5 part, the mould inhibitor of 0.5-0.9 part, the preservative of 0.2-0.7 part, the levelling agent of 1.5-2 part and the epoxy radicals acrylic acid of 23-27 part;The acrylic acid substitute of above-mentioned epoxy radicals is water soluble acrylic acid or Epocryl.
Further, described sheet material graphite is native graphite or Graphene, or both mixtures.
Further, one or more the mixture during described coalescents is Texanol ester alcohol (2,2,4-trimethyl-1,3-pentanediol mono isobutyrate), LusolvanFBH, Coasol, DBE-IB, DPNB or Dowanol pph;
Described dispersant is one or more the mixture in dimethyl silicone polymer, dimethicone and polysiloxanes;
Described cosolvent is 1,2-PD;
Described defoamer is organic silicon defoamer or polyether antifoam agent;
Described thickener is cellulose ether, or the mixture of its derivative and nonionic solvent-free hydrophobically modified ethoxylated urethanes class rheology modifier;
Described pH adjusting agent is one or more the mixture in 2-amino-2-methyl-1-propanol, monoethanolamine, diethanol amine, triethanolamine, ethoxy urea or TMAH;
Described mould inhibitor is one or a combination set of benzimidazole methyl carbamate, N '-(3,4-dichlorophenyl)-N, N-dimethyl urea;
Described preservative is 1, one or more the mixture in 2-benzisothiazole-3-ketone, methylisothiazolinone, CMIT;
Described levelling agent is polyether-modified dimethyl polysiloxane copolymer.
Further, ball-type graphite slurry viscosity is 10000 50000Pa s.
A kind of method of PET film having ball-type graphite linings, comprises the following steps: by ball-type graphite slurry, spray, precipitate or be rolled over PET film surface, through 10-50min, 30-50 degree baking molding;
Wherein the preparation method of graphite slurry comprises the steps: ball-type graphite, sheet material graphite, defoamer and dispersant are added dispersion tank, and rotating speed controls at 800-1000 rev/min;In dispersion tank, add thickener again, grind, then in dispersion tank, add coalescents, cosolvent and aqueous acrylic emulsion, stirring;Last addition mould inhibitor, levelling agent, preservative and PH conditioning agent in dispersion tank again;Stirring;Putting into kneader and mediating to viscosity is 10000-50000Pa s, i.e. makes finished product.
Further, a kind of PET film having ball-type graphite linings is applied and is being reduced electronic product surface temperature.
The invention has the beneficial effects as follows:
The invention discloses a kind of PET film having ball-type graphite linings, it has easy to use, water-tolerant, is pasted onto electronic product surface and can accelerate electronic product radiating, effectively reduce electronic product temperature;Using method is easy, identical with common PET double faced adhesive tape or one side glue.
Embodiment 1:
Step one:
Ball-type graphite slurry, its formula composition is such as following table:
1 one kinds of ball-type graphite slurry formula composition tables of table
Prepare as a example by ball-type graphite slurry by the formula of embodiment 1, the preparation method of the present invention be described:
60 mass parts ball-type graphite, 10 mass parts native graphites, 0.2 mass parts SXP-107 organic silicon polyether composite anti-foaming agent and 1 mass parts dimethyl silicone polymer are added dispersion tank, and rotating speed controls at 800-1000 rev/min;In dispersion tank, add 2 parts by mass of cellulose ethers, speed lapping 10-30min again, then in dispersion tank, add 1 mass parts 2,2,4-trimethyl-1,3-pentanediol mono isobutyrate, 0.5 mass parts 1,2-PD and 23 mass parts Epocryls, stirring;Finally in dispersion tank, add 0.7 mass parts benzimidazole methyl carbamate, 0.2 mass parts 1,2-benzisothiazole-3-ketone and 0.3 mass parts 2-amino-2-methyl-1-propanol, 2 mass fraction levelling agent BYK-341 again, stirring;It is 20000Pa s to viscosity that coating is put into kneader kneading.
Step 2:
Ball-type graphite slurry described in the first step is sprayed on PET one side glue and is about 30 microns without glue surface surface, the thickness of ball-type graphite linings.Put it into drying 20min in the baking oven of 40 degrees Celsius.I.e. make finished product
The product of embodiment 1 preparation is carried out performance test, its result such as following table:
Project |
The product of embodiment 1 |
Condition in container |
Without lump, in uniform state |
Appearance of film |
Normally |
Application property |
Spray accessible |
Resistance to water |
96h, non-foaming, do not fall off |
Resistance to impact |
Without coming off, without cracking |
Salt spray resistance |
96h, non-foaming, do not fall off |
Table 2 the performance test results
The product of shell on the back stickup embodiment 1 preparation of same CRT monitor is carried out temperature test, its result such as following table:
Whether the shell on the back of 3 same CRT monitors of table sprays the product of embodiment 1 preparation carries out temperature test