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TPE 70-degree material
A medium-hard thermoplastic elastomer with a hardness of approximately Shore A 70, striking a good balance between the softness of an elastomer and the rigidity of an engineering plastic.
Category:
- Product Description
- 概要
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Item
Description
Product Name
TPE 70-Degree Material (Approx. Shore A 70)
Product Description
A medium-hard thermoplastic elastomer with a hardness of approximately Shore A 70, striking a good balance between the softness of an elastomer and the rigidity of an engineering plastic.
Key Characteristics
1. Higher Hardness & Rigidity: Provides good structural support and resistance to deformation.
2. Excellent Mechanical Strength: High tensile strength, tear strength, and impact resistance.
3. Good Elasticity & Resilience: Quickly recovers shape after compression.
4. Outstanding Abrasion & Fatigue Resistance: Suitable for applications with frequent friction or dynamic flexing.Main Applications
Industrial seals & gaskets, automotive parts (e.g., dust boots, bushings, wiper linkages), mechanical tool handles & grips, high-load components for sports equipment, high-wear housings/buttons for electronics, casters, conveyor rollers, high-performance sealing strips, overmolded structural parts bonded to rigid plastics (ABS, PC, PA).
Processing Methods
Injection Molding (primary), Extrusion Molding, Blow Molding.
Environmental Certifications
ROHS, REACH, PAHS, Phthalate Free. Grades meeting specific requirements like UL or FDA are available.
Color
Black, white, and various standard colors. Strong tinting strength and color stability. Custom colors available.
Odor
Very low or no noticeable odor.
Appearance
Uniform cylindrical pellets.
Storage Conditions
Store in a cool, dry, well-ventilated place. Avoid direct sunlight and high temperatures. Recommended shelf life: 12 months.
Packaging
25 kg/bag.
Physical Properties (Typical)
Test Item
Typical Value/Range
Unit
Test Standard
Specific Gravity
0.98 - 1.25
g/cm³
ASTM D792
Hardness
65A - 75A
Shore A
ASTM D2240
Tensile Strength
8.0 - 14.0
MPa
ASTM D412
Elongation at Break
250 - 450
%
ASTM D412
Tear Strength (Die C)
30 - 50
kN/m
ASTM D624
Compression Set (22h@70°C)
20 - 40
%
ASTM D395
Melt Flow Rate (190°C, 5kg)
8 - 25
g/10min
ASTM D1238
Suggested Molding Conditions
Item
Parameter Range
Drying Temp/Time
75-85°C / 2-3 hours (Recommended, especially for hygroscopic grades)
Melt Temperature Range
170 - 200 °C
Mold Temperature
35 - 60 °C
Injection Speed
Medium to high (depending on part geometry).
Critical Precautions
1. Mold & Process: Due to higher hardness, sufficient injection and holding pressure are required to ensure complete filling and avoid sink marks. Mold design should account for slightly higher shrinkage than typical rigid plastics (typical range: 1.8%-3.5%).
3. Abrasion & Oil Resistance: Standard grades have good abrasion resistance. For use in oily or extremely abrasive environments, choose oil-resistant or ultra-wear-resistant modified grades.
3. Balance of Elasticity & Rigidity: This is an elastomer. While relatively rigid, it differs from hard plastics. Its elastic deformation range should be considered in design.Purge Suggestion
After processing or before material change, thorough purging with PP or HDPE is recommended. When switching from a higher-temperature material, first reduce the barrel temperature to this material's processing range before purging to prevent residue carbonization.
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Guangdong Jinyuan Plastic Technology Co., Ltd.
Building 13, Zone C, Wanyang Innovation Hub, Yangqiao Town, Boluo County, Huizhou City, Guangdong Province, China
