News Details
Rubber plasticizer
2017-12-25 10:57:04
Rubber plasticizer
The influence of different rubber plasticizers on the mechanical properties of NBR vulcanizates can be seen. Because of plasticizers plasticizing effect, the hardness, 100% and 300% elongation stress of 15 plasticizers vulcanizates are higher than those of 30 plasticizers.
Adding 15 phr plasticizer vulcanizate tensile strength and elongation at break is also higher than the 30 rubber vulcanizates by adding plasticizer, this is because the experimental formula of ointment dosage, the dosage of silica is low, reinforcement of small rubber, when the content of plasticizer to 30 phr, the mechanical the properties of vulcanizates decreased.
The hardness, the 100% and the 300% elongation stress of TP295 or TP290B vulcanizates were higher than those of DOA or DOP vulcanizates. TP295 and TP290B promoted the vulcanization of rubber vulcanizates and increased the crosslinking density.
The influence of different plasticizers on the aging resistance of NBR vulcanizates is obvious. After aging at 100 70h, the hardness and the 100% elongation stress of vulcanizates increase, and the elongation at break decreases due to the change of molecular structure and cross-linking structure of rubber.
The tensile strength of TP290B vulcanizate increased after aging, because the relative molecular mass of TP290B and a relatively low boiling point volatile part of aging (add 30 copies of the TP290B sample after aging by reducing the weight of 12%), which leads to the decrease of the content in vulcanizate, tensile strength is increased, the elongation at break change this rate is relatively small, and the amount of the plasticizer is low with high mechanical properties of vulcanizates is similar to the situation. Similar phenomena occurred in DOA, but the degree of change was less than that of TP290B.
The addition of TP295 and the hardness of the DOP vulcanizate and 100% variation of tensile stress is less than TP290B, the elongation change rate is higher than TP290B, the tensile strength is lower than the aging data before, mainly because TP295 and DOP have higher relative molecular mass and the boiling point, aging volatile small, so no added increased tensile strength of TP290B vulcanized rubber aging phenomenon, so the two aging conditions than TP290B and DOA showed better thermal stability.
TP290B and TP295 are direct chain alkyl polyether or ether ester structure, which obviously reduces the vitrification temperature of NBR vulcanizates, and the cold resistance is better than that of DOA and DOP.
TP295 and TP290B have a certain promoting effect on vulcanization, the burning time and the positive curing time of the rubber are shorter, and the 100% and 300% stress of the vulcanizate are relatively large. Under the experimental conditions, TP295 has good thermal stability, while TP290B is more volatile.
Two octyl terephthalate (plasticizer DOTP) information:
Shipping port: Shanghai port
Price quotation validity: 15 days
Entry time: 15 days (inspection declaration)
Export authority: the company's right to import and export
Use of two octyl terephthalate (plasticizer DOTP)
1.DOTP has good electrical and thermal properties. It can be used to replace DOP in the sheath of PVC plastic wire and can also be used in the production of artificial leather membrane. In addition, with excellent compatibility, terephthalic acid ester is two PVC acrylonitrile derivatives plastic plasticizer, plasticizer, plasticizer, polyvinyl butyral nitrile rubber plasticizer, plasticizer for cellulose nitrate. The improvement of the product and plays the role of hardness and deformation, can be used as softener in NBR, chloroprene rubber, EPDM rubber and other products three. Especially for cable material, it has good plasticizing effect and low volatility. It is widely used in various products that require heat resistance and high insulation. It is an ideal plasticizer for producing 70 PVC cable material and other volatile resistant products.
2.DOTP is used for the PVC products in the car, which can solve the fog problem of the glass window. DOTP is also used for high quality lubricants or lubricant additives furniture and interior decoration paint, and precision instruments, nitro varnish additives, paper softener, biaxially oriented polyester amide membrane film, plastic bags and other crafts, plasma storage.
3. because the linear molecular structure of DOTP is similar to DOS and DOA, its cold resistance is also better.
The volume resistivity of 4.DOTP is 10-20 times higher than that of DOP, and its mobility is excellent.
5., because DOTP does not contain o-phthalate two formate, it is not an environmental friendly plasticizer in the range of 16 16 kinds of plasticizers containing o-phthalic acid in the European Union and other countries.
Low temperature tensile properties and low temperature brittleness. The tensile properties of 15 different plasticizer vulcanizates were added at -35 C. It can be seen from the table that the elongation at break of TP290B vulcanizate is the largest, while the tensile strength is relatively low. The 100% elongation stress is also lower than that of TP295 or DOA vulcanizate, while DOP vulcanizate has the largest tensile strength and elongation at break.
This is because the vulcanizates added to DOP at this time are in the glass state, while the vulcanizates adding TP295 or TP290B are still in a high elastic state. It can be seen from table 4 that the low temperature brittleness of adding TP290B vulcanizates is the best, followed by TP295 or DOA vulcanizates. The low temperature brittleness of DOP vulcanizate was the worst. It is in accordance with the changing law of glass temperature discussed before.
The influence of different plasticizers on the vulcanization curve and vulcanization characteristic parameters of NBR compound can be seen. The highest torque of adding TP290B or TP295 compound is larger, while the highest torque of DOP or DOA compound is smaller. But as mentioned above, the cold resistance of TP290B and TP295 is good, and it should have a good plasticizing effect, that is, the vulcanization torque of the rubber should be low.
Compared with the vulcanization curve of the blank, both TP290B and TP295 have a certain effect on the vulcanization of the rubber. The scorching time and the positive vulcanization time of adding TP290B and TP295 are shorter than the vulcanizates with DOP and DOA. Therefore, the highest torque of adding TP290B or TP295 is probably due to the increase of the vulcanization degree of the rubber and the increase of the crosslinking density. However, for the relatively sparse rubber crosslinking network, the increase of rubber crosslink density has little effect on the low temperature performance.
Rubber (Rubber) is a highly elastic polymer material with reversible deformation. It is elastic at room temperature and can produce large deformation under very small external force. It can recover its original state after removing external force. Rubber is a completely amorphous polymer, its glass transition temperature (T g) is low, the molecular weight is often large, more than hundreds of thousands.
Early rubber was made from rubber trees, rubber grass and other plants, made of elastic, insulating, impervious and air materials. A high elastic polymer. It is divided into two kinds of natural rubber and synthetic rubber. Natural rubber is made from rubber tree, rubber grass and other plants, and the synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in all aspects of industry and life.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
The influence of different rubber plasticizers on the mechanical properties of NBR vulcanizates can be seen. Because of plasticizers plasticizing effect, the hardness, 100% and 300% elongation stress of 15 plasticizers vulcanizates are higher than those of 30 plasticizers.
Adding 15 phr plasticizer vulcanizate tensile strength and elongation at break is also higher than the 30 rubber vulcanizates by adding plasticizer, this is because the experimental formula of ointment dosage, the dosage of silica is low, reinforcement of small rubber, when the content of plasticizer to 30 phr, the mechanical the properties of vulcanizates decreased.
The hardness, the 100% and the 300% elongation stress of TP295 or TP290B vulcanizates were higher than those of DOA or DOP vulcanizates. TP295 and TP290B promoted the vulcanization of rubber vulcanizates and increased the crosslinking density.
The influence of different plasticizers on the aging resistance of NBR vulcanizates is obvious. After aging at 100 70h, the hardness and the 100% elongation stress of vulcanizates increase, and the elongation at break decreases due to the change of molecular structure and cross-linking structure of rubber.
The tensile strength of TP290B vulcanizate increased after aging, because the relative molecular mass of TP290B and a relatively low boiling point volatile part of aging (add 30 copies of the TP290B sample after aging by reducing the weight of 12%), which leads to the decrease of the content in vulcanizate, tensile strength is increased, the elongation at break change this rate is relatively small, and the amount of the plasticizer is low with high mechanical properties of vulcanizates is similar to the situation. Similar phenomena occurred in DOA, but the degree of change was less than that of TP290B.
The addition of TP295 and the hardness of the DOP vulcanizate and 100% variation of tensile stress is less than TP290B, the elongation change rate is higher than TP290B, the tensile strength is lower than the aging data before, mainly because TP295 and DOP have higher relative molecular mass and the boiling point, aging volatile small, so no added increased tensile strength of TP290B vulcanized rubber aging phenomenon, so the two aging conditions than TP290B and DOA showed better thermal stability.
TP290B and TP295 are direct chain alkyl polyether or ether ester structure, which obviously reduces the vitrification temperature of NBR vulcanizates, and the cold resistance is better than that of DOA and DOP.
TP295 and TP290B have a certain promoting effect on vulcanization, the burning time and the positive curing time of the rubber are shorter, and the 100% and 300% stress of the vulcanizate are relatively large. Under the experimental conditions, TP295 has good thermal stability, while TP290B is more volatile.
Two octyl terephthalate (plasticizer DOTP) information:
Shipping port: Shanghai port
Price quotation validity: 15 days
Entry time: 15 days (inspection declaration)
Export authority: the company's right to import and export
Use of two octyl terephthalate (plasticizer DOTP)
1.DOTP has good electrical and thermal properties. It can be used to replace DOP in the sheath of PVC plastic wire and can also be used in the production of artificial leather membrane. In addition, with excellent compatibility, terephthalic acid ester is two PVC acrylonitrile derivatives plastic plasticizer, plasticizer, plasticizer, polyvinyl butyral nitrile rubber plasticizer, plasticizer for cellulose nitrate. The improvement of the product and plays the role of hardness and deformation, can be used as softener in NBR, chloroprene rubber, EPDM rubber and other products three. Especially for cable material, it has good plasticizing effect and low volatility. It is widely used in various products that require heat resistance and high insulation. It is an ideal plasticizer for producing 70 PVC cable material and other volatile resistant products.
2.DOTP is used for the PVC products in the car, which can solve the fog problem of the glass window. DOTP is also used for high quality lubricants or lubricant additives furniture and interior decoration paint, and precision instruments, nitro varnish additives, paper softener, biaxially oriented polyester amide membrane film, plastic bags and other crafts, plasma storage.
3. because the linear molecular structure of DOTP is similar to DOS and DOA, its cold resistance is also better.
The volume resistivity of 4.DOTP is 10-20 times higher than that of DOP, and its mobility is excellent.
5., because DOTP does not contain o-phthalate two formate, it is not an environmental friendly plasticizer in the range of 16 16 kinds of plasticizers containing o-phthalic acid in the European Union and other countries.
Low temperature tensile properties and low temperature brittleness. The tensile properties of 15 different plasticizer vulcanizates were added at -35 C. It can be seen from the table that the elongation at break of TP290B vulcanizate is the largest, while the tensile strength is relatively low. The 100% elongation stress is also lower than that of TP295 or DOA vulcanizate, while DOP vulcanizate has the largest tensile strength and elongation at break.
This is because the vulcanizates added to DOP at this time are in the glass state, while the vulcanizates adding TP295 or TP290B are still in a high elastic state. It can be seen from table 4 that the low temperature brittleness of adding TP290B vulcanizates is the best, followed by TP295 or DOA vulcanizates. The low temperature brittleness of DOP vulcanizate was the worst. It is in accordance with the changing law of glass temperature discussed before.
The influence of different plasticizers on the vulcanization curve and vulcanization characteristic parameters of NBR compound can be seen. The highest torque of adding TP290B or TP295 compound is larger, while the highest torque of DOP or DOA compound is smaller. But as mentioned above, the cold resistance of TP290B and TP295 is good, and it should have a good plasticizing effect, that is, the vulcanization torque of the rubber should be low.
Compared with the vulcanization curve of the blank, both TP290B and TP295 have a certain effect on the vulcanization of the rubber. The scorching time and the positive vulcanization time of adding TP290B and TP295 are shorter than the vulcanizates with DOP and DOA. Therefore, the highest torque of adding TP290B or TP295 is probably due to the increase of the vulcanization degree of the rubber and the increase of the crosslinking density. However, for the relatively sparse rubber crosslinking network, the increase of rubber crosslink density has little effect on the low temperature performance.
Rubber (Rubber) is a highly elastic polymer material with reversible deformation. It is elastic at room temperature and can produce large deformation under very small external force. It can recover its original state after removing external force. Rubber is a completely amorphous polymer, its glass transition temperature (T g) is low, the molecular weight is often large, more than hundreds of thousands.
Early rubber was made from rubber trees, rubber grass and other plants, made of elastic, insulating, impervious and air materials. A high elastic polymer. It is divided into two kinds of natural rubber and synthetic rubber. Natural rubber is made from rubber tree, rubber grass and other plants, and the synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in all aspects of industry and life.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
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