黏合促进剂

Manobond 680C
0.50
Accelerator DCBS 0.80
80% Crystex sulfur 5.0
Total
172.8
Outside Performance Testing of
New Alternative Candidates
• Mooney Viscosity • Cure profile
• 至少25%的间苯二酚单体受热挥发
– 橡胶中的其它挥发份继续缓慢挥发
柔韧性
Cycles to all fail
Flex Properties
200.00%
180.00%
160.00%
140.00%
120.00%
100.00%
80.00%
60.00%
40.00%
20.00%
0.00%
B18S
B19s
Fiber Adhesion
RFL dip Polyester Aramid
RF
RF 2
A150
A250
撕裂强度
Tear Strength, lbf-in
Tear strength -RFL Dip Polyester
180
160
140
120
100
80
60
40
20
0
Resorcinol
RF
RF 2
Improved Worker Health
Low volatility (no blue haze) Low or non-toxic constituents
Safe Working Conditions
No or low flammable volatile content
Opportunities for Improvement
硫化性能比较
Scorch and cure
说明 Comp 1-3 = 竞争产品 （间苯二酚甲醛树脂） A-150 = Elaztobond® A 150 A-250 = Elaztobond® A 250
物理性能比较
热老化性能比较
粘合性能
与镀黄铜钢丝
发烟
• 间苯二酚的发言问题：
– 参作员工的健康
RF
RF 2
A150
A250
物理性能
Modulus, psi
Strength
3000
2500
2000
1500
1000
500
• Hysteresis
– Heat build up measured by rebound resistance
• Flexural Properties • Fuming
测试方法
Test
ODR Mooney Curing & Molding T Physical Properties
Original
Low adhesion Stiffer rubber compounds formed
Opportunities for Improvement
Environmental, Health and Safety Environmentally Friendly
No heavy metals No or low water soluble content
• Prior to vulcanization, a tire has many different parts, • Several parts are not made entirely of rubber, • Adhesion of the non metal parts to the rubber parts and
H2C
Model Skim Compound Formula
Material
phr
SIR-10 NR
100
N326 Carbon black 55
Zinc Oxide
8.0
Stearic Acid
1.0
Antioxidant
1.0
Antiozonant
2.0
HMMM
3.0
Adhesion Promoter 3.0
Why use an Adhesion Promoting Resin?
• Improve bonding between rubber and other constituents of a composite article
How? • By providing specific adhesion between
– 易燃性
– 清洁维护成本
• 游离间苯二酚的含量：
– 单体
100%
– B-18s
14-20%
– A150/A250
<0.1%
间苯二酚的挥发
• TGA分析，150C:
170C下的挥发
• 挥发速度更快！
170C在橡胶中的发烟
• 样品为100%的天然橡胶覆盖胶
– 含有4份树脂或间苯二酚单体的未硫化样品
Adhesion Promoters
Three Types are Currently Used by the Rubber Industry
Resorcinol Monomer and/or Resorcinol/Formaldehyde (R/F) Resins
SI Group SRF-1501
Adhesion Promoter Basics
• Solid versions are added to rubber compounds to increase adhesion to dissimilar materials
- OR -
• Liquid versions typically used in conjunction with elastomer latex applied in dipsto pre-treat fabric or metal to increase adhesion to rubber
Resorcinol Monomer and/or Resorcinol/Formaldehyde (R/F) Resins
Limited supply Cost EHS
Organo-metallic Compounds
Limited supply Cost EHS
Cashew Nut Shell Oil Modified (CNSO) Phenolic Resins
Later it appeared some parts of that first goal could be surpassed…
The Skim Compound
Skim Compound is used to sandwich the non-rubber components of an article
rubber part from moving independently
The Skim Compound
The Skim Compound must
• Provide a good bond to adjacent rubber layers that are added
Classic R-F resins
A150
A250
撕裂强度
Maximum Force
Tear strength - Aramid Fiber
16
14
12
10
8
6
4
2
0
Resorcinol
RF
RF 2
A 150
A 250
物理性能
Modulus, psi
250 200 150 100
50 0 Resorcinol
Physicals
Ultimate Elongation (%) Shore A Hardness
Performance The first goal was to match current performance by outside testing…
• Processing properties before cure • Behavior during cure • Performance after cure
Availability and Cost Availability
Readily available raw materials Multiple manufacturing sites Global Sourcing
Cost
Lower cost
Opportunities for Improvement
introducing… Elaztobond™ A
A family of ADHESION PROMOTING RESINS developed for use in SKIM COMPOUND to improve rubber to non-rubber bonding
Building a Tire
B20S
Dermattia Flexibility
A150
A250
Elaztobond® A150: 与B-18-s,B-19-s相当，优于B-20-s. Elaztobond® A250: 远优于其它规格
纤维粘合力
Pullout Force
16 14 12 10
8 6 4 2 0
Resorcinol
The Skim Compound
The Skim Compound must • Have good bonding to the non-rubber
material
The Skim Compound
The Skim Compound must • Provide extra stiffness to prevent the non-
D 2632-88 D 2632-88
D 2229-02 D 2229-02
Comment
300°F 100°C 300°F
70°C for 72h 0.25” wide at 2 in/min Pierced samples
20°C 30min at 100°F
15 specimens 0.5” block 21 days @ 80°C, 98% RH
rubber to rubber adhesion is critical to performance.
A Timing belt
Other rubber articles contain non-rubber components that must be bonded to the rubber like the fiber reinforcing in a belt or hose.
the rubber and other components of the article
Adhesion Promoting Resins
NEW
Schenectady Products • SRF-1501 – Solid RF Resin • SRF 1524 – Liquid RF Resin • SRF-1704 – Lower solids 1524 • Elaztobond™ A 150 • Elaztobond™ A 250
Heat aged Rubber Adhesion DeMattia Flex Bayshore Resilience
Room Temperature Hot
Wire Adhesion Room Temperature Aged
ASTM
D 2084-01 D 1646-00 D 3182-01
D 412-98a(02) D 2240-02b D 573-99 D 413-98(02) D 813-95(00)
Organo-metallic Compounds
Cobalt Napthenate
Cashew Nut Shell Oil Modified (CNSO) Phenolic Resins
SI Group HRJ-11995
All Three have PROBLEMS…
Adhesion Promoter Problems
• Classic R-F resin:
– High Xlink density
– High stiffness
– Good wire adhesion
HO
Hale Waihona Puke – High reactivity
– High free monomer content
RF1
14-18%
RF2
10-14%
OH
OH
CH 2
HO CH 2
– T90 Cure – Scorch
• Physical Properties
– Tensile Strength – % Elongation – Modulus – Hardness (Shore A)
• Adhesion
– Rubber to Rubber Adhesion – Rubber to Wire Adhesion