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Spec
- Use:Construction
Key Features
+ Phenolic resin for adhesive
+ Alkyl Phenolic Resin
+ Terpene Phenolic Resin
+ Phenolic Resin for adhesive
Alkyl Phenolic Resin (APU-20-52G)
Advantage
- Softening point (Ring & Ball): 115-130℃
- Appearance: pale yellow lump
- Enhance the adhesion strength
- Increase the phasing stability
- Increase the heat resistance
- Improve the tackiness retention time
Application
Printing coating agents, adhesive tackifier, printing ink, paint, synthetic leather and PVC leather to enhance the
adhesive viscosity.
Introduction
Though chloroprene rubber has an excellent weathering, oil and chemical resistance, it is necessary, in practice, to make use of a modifying agent to improve the properties of chloroprene rubber adhesive, such as tackiness retention time, phasing stability, heat resistance and adhesion strength. "APU-20-52G" is excellently compatible with chloroprene rubber and an indispensable modifying agent for chloroprene rubber for manufacturing adhesive to meet specific purposes.
Alkyl phenolic resin
1) Specifications
| ITEM NO. | Appearance | MgO Reactivity(%) | Softening point (℃, R&B) |
| APU-20-52G | Pale yellow, lump | 6.5 | 115-130 |
2) Typical Formulation (MgO Prereation)
| Part 1 | Parts by wt. |
| Chloroprene TA-50 | 100 |
| MgO | 4 |
| ZnO | 5 |
| Stabilizer | 2 |
| Part 2 | Parts by wt. |
| APU-20-52G | 50 |
| Toluene | 150 |
| MgO | 5 |
| Water | 0.5 |
| Part 3 | Parts by wt. |
| Toluene | 96 |
| n-Hexane | 123 |
| Ethyl acetate | 123 |
(Solvent formula in total : Toluene/n-Hexane/Ethyl acetate = 2/1/1)
Procedure
Mix ingredients of Part 1 together on milling roll then dissolve in mixed solvent (Part 3). Stir Part 2 in a vessel for 5 hours, then add it the mixture of Part 1 and Part 3. Keep agitation further 5 hours to give adhesive of 25% solids.
3) Adhesive Properties
| ITEM NO. | Adhesion Strength | Tackiness | Heat | Phasing | ||
| After 5 hours | After 24 hours | At 60oC | ||||
| APU-20-52G | B | B | B | B | B | B |
A : Excellent
B : Good
C : Fair
X: Poor
- a) Heat Resistance
| ITEM NO. | Heat Resistance (℃) | Result |
| APU-20-52G | 84 | B |
Test Conditions
| Method | ASTM-D-816-55 |
| Weight | 500g |
| Adherend | Steel to vulcanized rubber |
| Test Conditions | Kept 3 days after bonding |
| Temperature graduation | 2oC/5 min |
- b) Phasing Resisttance
Adhesives in stoppered jar were kept for one month at 20oC then phasing was observed
| Excellent | Completely no phasing |
| Good | Top part is slightly phasing |
| Fair | 5% of upper part is phasing |
| Poor | 50% of adhesive is phasing |
- c) Tackiness Retention Time
| ITEM NO. | Tackiness Retention Time | Result |
| APU-20-52G | 10 min, 15 sec. | B |
- d) Adhesion Strength
Test Conditions
| Peeling angle | 180 |
| Adhesion strength at 60oC | Test pieces were kept 3 days after bonding then kept one hour at 60oC before test. |
| Adherend | Steel to canvas |
| Peeling velocity | 200 mm/min |
| Temperature | 20℃ (68oF) |
| ITEM NO. | Elapsed Days | At 60oC | Initial Strength | |||||
| 1 | 3 | 7 | Result | 1 hour | Result | 5 hours | Result | |
| APU-20-52G | 4.8 | 11.6 | 14.5 | B | 6.4 | B | 2.5 | B |
Unit : kg/25 mm2
- e) Shear strength
Test Conditions
| Shearing velocity | 50 mm/min |
| Glued area | 10 mm x 25 mm |
| Test Conditions | at 20℃ (68oF) |
| Open time | 10 min |
| Bonded material | Plywood to plywood |
| ITEM NO. | Elapsed Days | Result | ||
| 1 | 3 | 7 | ||
| APU-20-52G | 22.2 | 32.8 | 43.0 | B |
Unit : kg/25 mm2
Notice: These values are based on the test of our present laboratory test specimens.
****We cordially invite you to access our following website to know more about our
Phenolic Resin - http://www.taiwanpu.com/products_list.asp?title_seq=294
Payment Details
- Payment Terms:DA ,TT ,L/C
