replacement of phthalates by vegetable oil derived plasticizer in nbr compounds.

The main purpose of adding plasticizer to the polymer is to promote the processing and increase the flexibility of the final product.
Plasticizer such as neighboring benzene Ester has successful applications in the chemical, plastic and construction industries as well as in the packaging, adhesives, resins, paper and printing industries.
As health assessment studies show potential risks to humans, the use of the pound has received special attention over the years.
Consider the key debate (ref. 1)
Restrictions and restrictions imposed by Europe (refs. 2-5)
Recently in North America (refs. 6-8)
, Extended search cost-
Effective substitute for neighboring benzene Ester has been carried out, and some alternatives are still going on today.
In fact, there are already several plasticizer in the market.
Many alternatives can be found in PVC (
PVC)applications.
Plasticizer, such as Hexamoll (
Dione-Cyclone1,2-dicarboxylate), Mesamoll (
Alkyl sulfuric acid ester containing phenol)
Or Eastman 168 (1,4-
Benzene diacid-bis[2-ethylhexyl]ester)
Developed as a replacement.
It is recommended that the epoxy monamine diacetate in cottonseed oil and soybean oil be used as a substitute for DOP and DOA (
2 Xin Ester hexanedioate)(ref. 9).
Acrylic monogan ester obtained from hydrogenation castor sesame seed oil (refs. 10 and 11)
It is also considered a replacement for phthal salts.
Another product of epoxy vegetable oil ester (soybean oil)
It has been proposed to replace ore and DOA with triacetate (ref. 12).
The literature also describes the substitution of epoxy fatty acid ester by epoxy oil (
Flax seeds and soybeans)trans-
With polyester (ref. 13).
In other applications, such as the production of thermoplastic polyurethane (TPU)(ref. 14)
For the determination of the oil absorption of the filler (refs. 15-18)
In the rubber industry, especially the manufacturing field of technical rubber products.
Over the past few years, considerable attention has been paid to the substitution of neighboring benzene Ester in the NBR.
Except for synthetic plasticizer (refs. 19-21)
Plasticizer derived from vegetable oil is also recommended.
Cashew nut shell oil (ref. 22)
, Or oyster seed oil (ref. 23)
Described in the literature.
For each specific application, the balance between demand attributes and costs must be considered.
Therefore, replacing neighboring benzene Ester is the focus of the follow-up study.
This study will discuss the substitution of DOP, DL and DINP with plasticizer derived from sunflower oil, Pionier TP 130 B, for several compounds based on NBR.
This work describes and compares the vulcanization behavior of new neighboring benzene Ester, the physical properties before and after aging, and the resistance of different media
Free shipping Ding Qing rubber compound tothe compared to the traditional ones
Rubber compound with Ding Qing.
The aim is to obtain rubber compounds with the same properties as conventional rubber compounds by using Pionier TP 130 B.
In the preparation of the experimental materials and samples of this study, four kinds of plasticizer, trefoil Ester DOP (density at 20[degrees]C is 0. 99 g/[cm. sup. 3]
Buy from Sigma Aldrich), DBP (density at 20[degrees]C is 1. 05g/[cm. sup. 3]
Buy from Sigma Aldrich), and DINP (density 0. 98g/[cm. sup. 3]
Buy from Sigma Aldrich)
A vegetable oil plasticizer extracted from sunflower oil, Pionier TP 130 B (density at20[degrees]C is 0. 91 g/[cm. sup. 3]
Hansen and RosenthalKG).
Four typical generic compound preparations, namely, o-
Ring compound with hardness 75 durometer a, diesel fuel pump membrane compound with hardness 73 durometer A, LPG (
Liquefied petroleum gas)
Hose-resistant compound with hardness 80 durometrix and gasket compound with hardness 65 durometer
These rubber compounds are mixed in a mixer for 10 minutes at a temperature of 50 [degrees]
Rotor speed of C and 50 rpm.
Added sulfur agent on both compoundsroll mill at50[degrees]C.
These compounds were optimized on the laboratory fume hood.
Tables 1 through 4 describe the NBRformulations studied.
According to DIN 2000, the Mooney viscosity of the compound was determined on the MV 53523/3 rubber process analyzer.
Use the Zwick tensile testing machine to test the mechanical properties According to DIN 53504 and measure the hardness According to DIN 53505.
Through the change of stress, before and after aging in different media, the characteristic of the Therubber plate is
Experiment of strain properties, hardness and expansion.
Compression setting tests at high temperatures were performed According to din iso 815.
After three weeks of storage at room temperature, the quality of the compound was studied, including vulcanization behavior and visual inspection.
Results and discussion table 5 shows a comparison between the flow and physical properties before and after the aging of the reference oil, and o-
Ring compounds and alternative products Pionier TP 130 B with O-benzene Ester DOP and dinp
Prepare specimens according to the formula shown in Table 1.
Low monthly viscosity ML (1+4)100[degrees]
The third is for Pionier TP 130 B thanfor DOP and DINP, and the focus burning time (t5)and (ts2)
All compounds are similar.
The curing properties show that the vulcanization time of compounds based on Pionier TP 130 B is slightly short (t90)
Than the reference compound with DOP.
Therefore, the superior curve index is obtained for the neighboring benzene salt
Free product than dop plasticizer.
The maximum torque or curing state of Phthalate is higher than Pionier TP 130 B.
These findings are reflected in the physical properties, that is, the breaking elongation of break ier TPBOB is slightly higher, the modulus at 100% of the breaking elongation is lower, and the hardness is reduced.
Effects of fluid resistance on performance changes were investigated by soaking the material in rm 902 [336 h]degrees]
C in IRM 903 70 hours 125 【degrees]C.
Volume change of traditional plasticizer and neighboring benzene ester
Freeproduct in reference oil is comparable in both media.
The measurement results show that Pionier TP 130 B improves fluid resistance in rm 90 and exhibits similar aging performance in rm 903.
By comparing the properties of the original and aging materials, the stability of the new product in the compound after three weeks of storage at room temperature was evaluated. The A torque([S\'. sub. max]-[S\'. sub. min])
The number of scorches (ts2)
And the curve index changes the least.
This indicates that the O-benzene Ester replacement products have good storage performance.
This is also confirmed by the visual inspection of the surface of the material that no oil was detected.
The overall assessment is that Pionier TP 130 B can match the performance of conventional O-benzyl DOP and D1NP.
The new product proves o-
The ring material in Rm 902 reference oil shows considerable performance in rm 903.
Table 6 summarizes the flow and curing properties of the diesel fuel pump membrane formulation, the physical properties of unaged and aged, and the properties after storage.
The rubber sheet for investigation contains the materials listed in table 2.
The obtained Meni viscosity and scorch results are consistent for the two groups, the two groups, and the Pionier TP 130 B.
The thermokinetic properties of the compounds examined indicate that Pionier TP130 B can achieve a comparable curing state as a reference.
Comparison of the original and aging properties of Phthalate and vegetable oil modified plasticizer extended NBR rubber compounds confirms the fluid resistance of phthalate in 903freeproduct.
The elongation change of Pionier TP 130 B is low, about-
20%, about the high loss of display-
27%/day
DINP was 29%, respectively.
The tensile strength and the modulus at 100% elongation also showed the same trend.
It was also noted that compounds based on Pionier TP 130 B exhibit excellent resistance in isobitterness;
It\'s as good as the two.
The results show that Pionier TP 130 B can improve the agingresistance of rm 903 and obtain the same physical properties as that in the mixture studied, thus, among the compounds that must meet the new environmental standards, it may be considered as an alternative product of traditional neighboring benzene ester.
Another application of O-benzene Ester in the NBR compound is LPGhose, which was developed to transfer liquefied petroleum gas liquids or steam.
The typical formula for the rubber mixture is listed in Table 3.
Table 7 compares three different LPG-resistant hose compounds by evaluating thermal physical, physical and curing properties, as well as the properties of hot air and pentane, which are part of some fuels.
The results show that the Mooney viscosity, scorch value, combustion properties and hardness of all test compounds are within the same range.
The fuel resistance of this material was studied, where all compounds showed almost the same degree of expansion.
The thermal regulation in the air shows the excellent performance of Pionier TP 130 B compared to phthalate products.
In addition, after extending the storage interval, through visual inspection of the material, no migration of the plasticizer on the surface of the compound and vulcanization rubber was found.
The results show that this plasticizer has good compatibility with rubber matrix.
It has been shown that Pionier TP 130 B is an alternative substance for O-benzene Ester in LPG hoses, showing similar curing behavior, stress-
The strain properties, hardness and heat resistance of the two neighboring benzene Ester were tested.
Comparison of neighboring benzene Ester and neighboring benzene ester
Table 8 details the free alternating plasticizer added to the gasket compound.
Table 4 shows their composition.
There was no significant difference in the vulcanization properties of the NBRcompounds extended with the neighboring benzene Ester plasticizer and Pionier TP 130 B.
After thermal aging, the physical properties of all NBR mixtures only change slightly.
Compounds containing new products show elongation of samechange as a reference, while there is no adverse effect on tensile strength and modulus of 100% elongation.
In addition, the aging of mbber sheets was evaluated in rm 903 andIRM 902.
In both reference oils, the low oil absorption of Pionier tp30-B was measured compared to DOP and DINP.
Compounds using Pionier TP 130 B show the marginal loss of breaking elongation and the modulus of 100% elongation, as well as comparable changes in tensile strength, compared to the extended neighboring compounds.
In conclusion, the results show that it is feasible to use Pionier TP 130 in place of DOP or DINP in the NBR gasket compound, because the overall performance is good based on the evaluation of physics and agingproperties.
Based on the results described in the present study, it can be concluded that Pionier TP 130 B is an appropriate alternative to the use of neighboring benzene ester compounds in several applications.
This new alternative product can reach the same level and can also improve the processing and anti-aging properties of NBR materials.
Finally, this study shows that, in the manufacture of rubber parts, the use of vegetable oil-derived plasticizer, such as Pionier TP 130 B, is feasible as a substitute for traditional neighboring benzene Ester, and inReferences (1. )P.
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