background:
The polyurethane industry has developed rapidly in recent decades, and the furniture and automotive industries have become increasingly concerned with consumer health, especially in the automotive industry. In 2010, China's auto production reached 18 million vehicles, ranking first in the world. But at the same time, because the space in the car is a relatively confined space, its environment has also received increasing attention. In recent years, there have been reports of toxic and harmful gases in cars that affect the health of drivers and passengers. At present, there is no uniform standard for the gas content in the vehicle. Each main engine factory adopts its own standards. The demand for low VOC emission, low atomization, low odor, and benzene and aldehydes is increasingly strong. The supporting polyurethane products are improved from the production of raw materials, such as polyether polyols, silicone oils, catalysts, and other additives. This article focuses on the introduction of flame compound sponges for the automotive interior industry to meet the automotive OEM's need for VOC, odor, atomization, and amine emissions.
Key raw materials
Low atomization silicone oil: L-5950M
Post-treated flame-retardant silicone oil, low atomization, good flame-retardant properties, fine cell.
Low atomization catalyst: ALLCHEM A-5307
Instead of traditionally used A1, A33 volatile amine catalysts, the resulting foam does not contribute to amine volatilization, odorless, low atomization, good foam opening properties, and ease of compounding.
New Generation Flame Adhesive: ALLCHEM FL-802LF Polyether Reactive Products
ALLCHEM FL-802LF is a special alkyl phosphite compound developed specifically for polyether flame bonding/composite sponges. Compared to ALLCHEM FL-802, it has low fogging, low VOC, and low odor. , In line with the increasingly stringent VOC and atomization requirements of composite sponges for the automotive interior industry. The use of ALLCHEM FL-802LF can improve the adhesion of the flame-composite foam, at the same time it has thermal stability, reduces yellowing and foaming of the foam, and because of its own reactive functional group, it can react with isocyanate (TDI) as part of the polymer. Reducing the smog produced during the process of sticking fire greatly improves the operating environment and the health of the personnel.
Performance Testing
Sponge product density 20Kg/M3
raw material name
Formula 1
Formula 2
Recipe 3
Polyether polyol
GEP-560S
Shanghai Gaoqiao
100
100
100
Silicone oil
L-5950M
ALLCHEM
1.0
1.0
1.0
Low atomization amine catalyst
A-5307
ALLCHEM
0.3
0.3
---
Amine catalyst
A33
ALLCHEM
---
---
0.2
Tin catalyst
T-9
ALLCHEM
0.35
0.35
0.35
Foaming agent
water
---
4.5
4.5
4.5
Foaming agent
Dichloromethane
---
3
3
3
Low atomization flame retardant
FR-620
ALLCHEM
15
15
---
Flame Adhesive
FL-802LF
ALLCHEM
2
3
---
Ordinary fire patch
***
Domestic manufacturers
---
---
5
Common flame retardant
***
Domestic manufacturers
---
---
15
TDI
---
---
55
55
55
Bonding fastness
very good
very good
good
VOC testing
Pass
Pass (Table 1)
Fail (Table 2)
Table 1 below shows the low fog atomizer FL-802LF + low atomization FR-620 TVOC <500ppm
(Testing Standard D40 0002-2010)
Test results
1.VOC
Test items
Test Results
Parallel Sample 1
Parallel Sample 2
Max
M1=15.8mg
M2=13.9mg
TVOC (C20)
249.03
239.68
249.03
TVOC (C16)
184.95
209.15
209.15
BHT
8.78
11.18
11.18
Silicone compounds
1.01
1.02
1.02
Total amine
0.08
0.07
0.08
TEDA
0
0
0
Bis 2-dimethylaminoethyl ether
0
0
0
3-Diethylaminopropionitrile
0
0
0
benzene
0
0
0
Toluene
0.05
0.11
0.11
Butyl acetate
0
0
0
Ethylbenzene
0.02
0.01
0.02
Styrene
0
0
0
N-undecane
0
0
0
Table 1
Table 2 below shows the market's average flame adhesion agent + common flame retardant TVOC severely exceeded
(Testing Standard D40 0002-2010)
Test results
1.VOC
Test items
Test Results
Parallel Sample 1
Parallel Sample 2
Max
M1=14.1mg
M2=13.9mg
TVOC (C20)
1458.12
1485.07
1485.07
TVOC (C16)
503.08
503.01
503.08
BHT
32.8
32.07
32.8
Silicone compounds
0
0
0
Total amine
5.71
6.23
6.23
TEDA
0
0
0
Bis 2-dimethylaminoethyl ether
0
0
0
3-Diethylaminopropionitrile
0
0
0
benzene
0
0
0
Toluene
0
0
0
Butyl acetate
0
0
0
Ethylbenzene
0
0
0
Styrene
0
0
0
N-undecane
0
0
0
Table 2
in conclusion
1. Using FL-802LF flame adhesive, the active ingredient is higher. Compared with domestic general flame adhesives, the use of FL-802LF flame adhesive can achieve the same laminating effect and high cost performance.
2. Using FL-802LF flame adhesive, the initial bonding speed is fast, the curing speed is increased, and the production efficiency can be improved;
3. ALLCHEM FL-802LF low atomization flame adhesive, with low atomization silicone oil L-5950M, low atomization catalyst A-5307 and FR-620 flame retardant, can be used to produce low VOC, low atomization automotive composite Sponge, to meet the specifications of the host plant;
4. In the flame bonding process, the use of FL-802LF flame-bonding agent (in conjunction with ALLCHEM FR-620 flame retardant) can significantly reduce the on-site smoke phenomenon and improve the operator's working environment and occupational health;
