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TC-2677

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Product description
Parameters

Approvals

UL-94:E-240849

RoHs:A2200131506101001E

Reach:A2200056714101001E

ENIS02409:Meets Requirements

 

Product characteristics:

1. Single component;

2. Low viscosity solvent;

3. Curing in room temperature or rapid heat curing after adding catalyst;

4. It can bond several surfaces, including some materials with low surface performance (e.g. organic silicon, fluoropolymer and polyolefins compound);

5. Resistance to damp, weather (ozone and sunshine), chemical (acid, alkali, oil, fusion and AC analysis and peel) and biology (fungus type) invasion, with good bonding, damp-proof insulation and excellent dielectric characteristics;

6. Excellent high and low temperature resistance, long-term stable application under -60℃ (-76℉)-260℃(500℉), with elasticity.

 

Product application:

Form durable coating on a base material via brushing, painting and dipping to separate moisture and pollutant in air, widely applied to thick circuit board system; porous base material, printed circuit board coating and other field.

Quality assurance and test method:

NO.

Specification item

Unit

Specification value

Frequency

Test method

1

Appearance

Transparent faint yellow

A

Visual inspection

2

Time of feeling no sticky

Min

15-20

A

Touched by a finger

3

Viscosity: 23℃

mPa﹒S

2000±500

A

JIS K6249

4

Hardness: TYPE A

≥50

A

JIS K6249

5

Specific gravity

1.1

B

JIS K6220

6

Tension strength

MPa

2.5

B

JIS K6249

7

Elongation in cutting

%

≥30

B

JIS K6249

8

Content of non-volatile matter

%

75±5

A

Weight method

9

Dielectric loss

100HZ

0.004

B

JIS K6249

10

Insulation breakdown strength (1.5mm film)

KV/mm

≥18

B

JIS K6249

11

Dielectric constant

100HZ

2.7

B

JIS K6249

12

Dielectric forward connection

50Hz

0.0016

B

JIS K6249

13

Volume resistivity

Ω·㎝

≥1×1015

B

JIS K6249

14

Flame retardancy (E-240849)

 

V0

B

UL-94

15

Cold and hot impact

 

Pass

B

IEC 60068-2-14

16

Dual 85 test

 

Pass

B

IEC 60068-2-78

17

Salt mist test

 

Pass

B

IEC 60068-2-11

Hardening condition: 25℃±2℃, 50±5%RH, 72h. Frequency: A-Test item of each batch; B-Assurance value item.

 

Application method:

1. Surface treatment

Clean and dry surfaces to get better bonding effect;

2. How to use it

Painting, brushing, slow coating or flow coating method is adopted for conformal coating of TC-2677 silicone. In case of high viscosity in painting, solvent (methylbenzene or xylene) can be used to dilute it to proper painting viscosity before automatic painting; generally, one slow conformal coating of TC-2677 silicone can get 0.1-0.2mm thick coating. After diluting solvent, coating is thinned and slow coating speed is suggested to be about 30cm/min. Coating thickness affects curing time and post-curing performances directly. Users can adjust coating thickness and coating speed as per product performance requirements and process features;

 

Curing in room temperature:

TC-2677 silicone conformal coating undergoes curing in room temperature through reacting with vapor. It takes 15 min for surface drying and 72h for total curing of normal coating in room temperature for 30 min or under 80-100℃ hot air for 15min.

 

Warranty, storage method and packaging specification:

1. Warranty: 12 months after manufacturing;

2. Storage method: in dark, cool and dry places;

3. Packaging specification: A) Container specification: 1L barrel, 20 L barrel; B) Material net weight: 1KG/barrel, 20 KG/barrel C) Label item: product, weight, batch, manufacturer and notes.

 

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