Introduction to polyolefin double-wall heat shrinkable tubing:
Polyolefin double-wall heat shrinkable tube is a special polyolefin material heat shrinkable tube. It is produced by double-layer co-extrusion process of polyolefin-based halogen-free flame-retardant materials and hot melt adhesive. The outer layer is made of polyolefin, which has the characteristics of insulation, halogen-free flame retardant, and low temperature shrinkage; the inner layer of hot melt adhesive has the advantages of low melting point, good adhesion, waterproof sealing and mechanical strain buffering. The heat shrinkable tube has high temperature shrinkage and soft resistance. The advantages of combustion, insulation and corrosion protection.
Polyolefin double-wall heat shrinkable tubing performance:
Technical data
|
Characteristic |
Standard |
Testing method |
Typical value |
|
Tensile strength |
≥24.1MPa |
ASTM D638 |
≥35MPa |
|
Elongation at break |
≥150% |
ASTM D638 |
≥300% |
|
Elongation at break after aging |
≥100% |
ASTM D638(225℃/168h) |
≥200% |
|
Thermal shock |
No cracks |
ASTM D2671(225℃/4h) |
No cracks |
|
Low temperature flexibility |
No cracks |
ASTM D2671(-55℃/4h) |
No cracks |
|
Insulation withstand voltage |
AC2500V/60S(No breakdown) |
ASTM D2671 |
No breakdown |
|
Volume resistivity |
≥1011Ω.cm |
ASTM D876 |
≥1011Ω.cm |
|
Copper corrosion |
No corrosion |
ASTM D2671(158℃/168h) |
No corrosion |
|
Flame retardant |
VW-1 |
UL 224 |
Pass |
Features of polyolefin double-wall heat shrinkable tubing:
1. The shrinkage ratio is 2:1, 3:1 4:1
2. Shrinkage temperature: initial 70℃, minimum full contraction 125℃
3. Working temperature: -45℃～+125℃
4. Specifications: 1.2mm～50.8mm
5. Certification: RoHS, UL.
6. Standard color: black (other colors can be provided according to customer requirements)
7. Tools: Heat with an oven and a hot air gun to shrink. The final shrinkage temperature of the polyolefin heat-shrinkable tube refers to the temperature at which the heat-shrinkable tube finally shrinks, which can make the polyolefin heat-shrinkable tube reach the temperature of complete shrinkage, such as Say that our polyolefin double-wall heat-shrinkable tube is heated to 84°C. It is not like cowhide tendon. I just need to hold it up to how big it is, and the cowhide tendon will bounce back completely and return to its original state as soon as I let go. Our heat-shrinkable tube is not like this. When it is heated to 84℃, it will not immediately change back to its original shape like cowhide tendons. The shrinkage of our polyolefin heat-shrinkable tube is a gradual process. We use polyolefin heat-shrinkable tube When heated to 84℃, it just shows shrinkage, and it cannot completely shrink the polyolefin heat-shrinkable tube. We must continue to heat and heat it to the final shrinkage temperature. If it is 125℃, then it can be completely contracted. shrink.
Polyolefin double-wall heat shrinkable tubing application range:
Polyolefin heat-shrinkable tubing has excellent flame-retardant and insulating properties, is very soft and elastic, has low shrinkage temperature, and shrinks quickly. It can be widely used in wire connection, wire end treatment, solder joint protection, wiring harness identification, resistance and capacitance insulation Protection, corrosion protection of metal rods or pipes, protection of antennas, etc. Under the action of high-energy rays, the linear polymer material forms a three-dimensional network cross-linked structure. The cross-linked polymer material has been greatly improved in terms of mechanical strength, temperature resistance, chemical solvent resistance, and aging resistance, especially the acid and alkali resistance.
Parameters of polyolefin double-wall heat shrinkable tubing:
Shrinkage ratio
|
Standard size (mm) |
Inner diameter before shrinking (mm) |
Maximum inner diameter after shrinking (mm) |
Wall thickness after shrinking (mm) |
Adhesive layer thickness (mm) |
Delivery length (m) |
|
|
Cut tube |
Rice/roll |
|||||
|
3.2/1.6 |
3.2 |
1.60 |
0.75+0.05 |
0.35 |
1.22 |
200 |
|
4.8/2.4 |
4.8 |
2.40 |
0.75+0.05 |
0.35 |
1.22 |
100 |
|
6.4/3.2 |
6.4 |
3.20 |
0.75+0.05 |
0.35 |
1.22 |
100 |
|
9.5/4.8 |
9.5 |
4.80 |
0.80+0.05 |
0.35 |
1.22 |
100 |
|
12.7/6.4 |
12.7 |
6.40 |
0.80+0.05 |
0.35 |
1.22 |
50 |
|
19.1/9.5 |
19.1 |
9.50 |
0.95+0.05 |
0.35 |
1.22 |
50 |
|
25.4/12.7 |
25.4 |
12.70 |
1.15+0.05 |
0.35 |
1.22 |
50 |
|
38.1/19.0 |
38.1 |
19.00 |
1.25+0.05 |
0.35 |
1.22 |
30 |
|
50.0/25.0 |
50.0 |
25.0 |
1.40+0.05 |
0.35 |
1.22 |
30 |
|
60.0/25.0 |
60.0 |
25.0 |
2.30+ 0.20 |
0.80 |
1.22 |
15 |
|
70.0/30.0 |
70.0 |
30.0 |
2.30+ 0.30 |
0.90 |
1.22 |
15 |
|
80.0/30.0 |
80.0 |
30.0 |
2.30+ 0.30 |
0.90 |
1.22 |
15 |
|
90.0/40.0 |
90.0 |
40.0 |
2.30+ 0.40 |
0.90 |
1.22 |
15 |
|
100.0/40.0 |
100.0 |
40.0 |
2.30+ 0.40 |
0.90 |
1.22 |
15 |
3 times shrinkage ratio
|
Standard size (mm) |
Inner diameter before shrinking (mm) |
Maximum inner diameter after shrinking (mm) |
Wall thickness after shrinking (mm) |
Adhesive layer thickness (mm) |
Delivery length (m) |
|
|
Cut tube |
Rice/roll |
|||||
|
3.0/1.0 |
3.0 |
1.00 |
1.00+0.20 |
0.50 |
1.22 |
200 |
|
4.8/1.6 |
4.8 |
1.60 |
1.00+0.20 |
0.50 |
1.22 |
100 |
|
6.0/2.0 |
6.0 |
2.00 |
1.00+0.20 |
0.50 |
1.22 |
100 |
|
9.0/3.0 |
9.0 |
3.00 |
1.40+0.20 |
0.60 |
1.22 |
100 |
|
12.0/4.0 |
12.0 |
4.00 |
1.78+0.30 |
0.76 |
1.22 |
50 |
|
18.0/6.0 |
18.0 |
6.00 |
2.25+0.50 |
0.76 |
1.22 |
50 |
|
24.0/8.0 |
24.0 |
8.00 |
2.54+0.50 |
1.00 |
1.22 |
50 |
|
30.0/10.0 |
30.0 |
10.00 |
2.54+0.50 |
1.00 |
1.22 |
30 |
|
40.0/13.0 |
40.0 |
13.00 |
2.54+0.50 |
1.00 |
1.22 |
30 |
|
50.8/19.1 |
50.8 |
19.10 |
2.54+0.50 |
1.00 |
1.22 |
30 |
4 times shrinkage ratio
|
Standard size (mm) |
Inner diameter before shrinking (mm) |
Maximum inner diameter after shrinking (mm) |
Wall thickness after shrinking (mm) |
Adhesive layer thickness (mm) |
Delivery length (m) |
|
4/1 |
4.0 |
1.00 |
1.00+0.20 |
0.50 |
1.22 |
|
8/2 |
8.0 |
2.00 |
1.00+0.20 |
0.50 |
1.22 |
|
12/3 |
12.0 |
3.00 |
1.40+0.20 |
0.60 |
1.22 |
|
16/4 |
16.0 |
4.00 |
1.78+0.30 |
0.76 |
1.22 |
|
24/6 |
24.0 |
6.00 |
2.25+0.50 |
0.76 |
1.22 |
|
32/8 |
32.0 |
8.00 |
2.54+0.50 |
1.00 |
1.22 |
Remarks:
• Standard color: black (-BK)
• Non-standard colors: white (-WH), red (-RD), yellow (YL), blue (-BL), green (-GR), transparent (-CL, non-flame retardant)
• Non-standard size: non-standard size products can be provided upon request
• Ordering instructions: specify the product model, specification, color
• The results in the table are typical data of this model product, and each batch of products will have a certain deviation.
Quality assurance
For each of our products, we will design a dedicated test equipment. Every product is an empirical test. Not a random test. This is one of the product test equipment.
Heat shrinkable braided sleeving product certification:
Mainly SGS environmental protection certification, the flame retardant grade is UL94-V0. The higher the environmental protection and flame retardant performance, the more favorable the export.
Service introduction: Introduction to circuit board services:
Pre-sales: Pre-sales will actively communicate with customers detailed information, customer needs, product parameters, quality standards, provide consultation, accept telephone orders and mail orders, provide a variety of convenience and financial services, etc.
In-sale: In-sale provides customers with solutions with the best performance-to-price ratio, proactively track contract signing, delivery of goods, and help customers solve problems.
After-sales:
1. Dissatisfaction caused by the quality of the product itself. We will help customers deal with the problem as soon as possible within the agreed period.
2. If the product cannot be used normally due to man-made reasons. We explain the cause of the problem to the customer, indicating that this type of problem is not covered by our warranty, and then provide other solutions to the customer based on the customer's problem.
Storage and transportation matters
1. This product is non-hazardous and should be sealed and stored in a cool place to prevent rain and sun exposure.
2. Avoid contact with strong acids, sulfur, phosphorus compounds and some metal salts during operation.
