Wood flour: A new filler for the rubber processing industry. III. Cure characteristics and mechanical properties of nitrile butadiene rubber compounds filled by wood flour in the presence of phenol-formaldehyde resin

2004 ◽  
Vol 92 (1) ◽  
pp. 95-101 ◽  
Author(s):  
T. G. Vladkova ◽  
P. D. Dineff ◽  
D. N. Gospodinova
Keyword(s):  
Mechanical Properties ◽  
Phenol Formaldehyde ◽  
Wood Flour ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Butadiene Rubber ◽  
Processing Industry ◽  
Cure Characteristics ◽  
Nitrile Butadiene Rubber ◽  
Rubber Compounds

Oil and Petrol Resistant Thermoplastic Vulcanizations Based on ABS-Plastic Mixture with Copolymer Butadiene and Acrylonitrile

2019 ◽  
Vol 816 ◽  
pp. 192-196
Author(s):  
Alsou D. Nasertdinova ◽  
A.D. Dementev ◽  
A.D. Khusainov ◽  
Svetoslav Isaakovich Volfson
Keyword(s):  
Mechanical Properties ◽  
Phenol Formaldehyde ◽  
Strength Properties ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Butadiene Rubber ◽  
Dynamic Vulcanization ◽  
Alkyl Phenol ◽  
Rubber Compounds ◽  
Thermoplastic Vulcanizates

The effect of the type and dosage of sulfur and resin (alkyl phenol formaldehyde resin grade SP - 1045) vulcanizing systems on the oil and petrol resistance and elastic strength properties of thermoplastic vulcanizates (TPV) obtained on the basis of nitrile-butadiene rubber and ABS-plastic, with a ratio of 70/30 respectively has been studied. In the course of studies of vulcanization characteristics, it was found that with an increase in the content of the vulcanizing system, the rate of vulcanization increases both during the vulcanization of rubber compounds and during dynamic vulcanization. The physic-mechanical properties of the TPV obtained indicate that with a fascination for the content of the vulcanizing system, the elastic-strength properties and the oil and petrol resistance of the TPV are also increased.

Novolak Type Phenol Formaldehyde Resin from Waste Brown-Rotted Wood

2011 ◽  
Vol 217-218 ◽  
pp. 490-494
Author(s):  
Gai Yun Li ◽  
Te Fu Qin
Keyword(s):  
Mechanical Properties ◽  
Phosphoric Acid ◽  
Thermal Property ◽  
Significant Influence ◽  
Phenol Formaldehyde ◽  
Product Yield ◽  
Flow Property ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Liquefied Wood

The waste brown-rotted wood was liquefied in phenol with phosphoric acid as a catalyst and the resulting liquefied products were condensed with formaldehyde to yield novolak liquefied wood-based phenol formaldehyde resin (LWF). The results showed that brown-rotted wood could be almost completely liquefied within 0.5 h at phenol to wood (P/W) ratio 2. An increase in P/W ratio from 2 to 3 slightly improved the flow property of LWF, but accompanied by decreasing the product yield from approximately 140 to 120 %. The increase of liquefaction time from 30 min to 60 min did not have a significant influence on the resulting LWF. The thermofluidity of LWF were compared to that of the commercial novolak PF resin, and could be used to make moldings with similar thermal property and mechanical properties to those obtained from the conventional novolak PF resin.

scholarly journals Self-adhesion X-ray Shielding Composite Material of EPDM Rubber with Barite: Mechanical Properties

2020 ◽  
Vol 57 (1) ◽  
pp. 28-36
Author(s):  
Vasiliy Cherkasov ◽  
Yuiy Yurkin ◽  
Valeriy Avdonin ◽  
Dmitriy Suntsov
Keyword(s):  
Mechanical Properties ◽  
Phenol Formaldehyde ◽  
Peel Strength ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Adhesion Properties ◽  
X Ray ◽  
Industrial Oil ◽  
Oil Concentration ◽  
Free Material

It is actual now to work out new radiation protecting sheeting on the basis of non-curing polymeric composition which possess self-adhesion properties, are easily mounted and dismantled and provide high tightness and low permeability. Mechanical properties of non-curing composites consisting of ethylene propylene diene monomer (EPDM), industrial oil (IO), alkyl phenol-formaldehyde resin (PF) with addition of barite (52 %) to the total material volume were investigated in this article. The aim of investigation is to find optimal content of the above mentioned components at which it would be possible to get the following properties: composite would be sticky enough (peel strength not less than 4 N/cm); character of a separation would be cohesive (on a material) and thus there would be no migration of softener and satisfactory resistance of fluidity. The results showed that PF addition till 20 % in the system EPDM/PF leads to the increasing of adhesive strength, in this case optimal oil concentration in the system EPDM/PF/IO is in the interval from 45 till 55 %. New self-adhesion lead-free material, exhibited higher X-ray-shielding properties, is also received in the result of investigation.

scholarly journals Reinforcement of Bakelite Moulding Powder in Acrylonitrile Butadiene Rubber (NBR): In Comparison with Cashew Nut Oil Modified Phenolic Resin

2020 ◽  
pp. 28-35
Author(s):  
Uthai Thepsuwan ◽  
Weenusarin Intiya ◽  
Promsak Sa-Nguanthammarong ◽  
Pongdhorn Sae-oui ◽  
Chakrit Sirisinha ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phenol Formaldehyde ◽  
Thermal Ageing ◽  
Resin Content ◽  
Formaldehyde Resin ◽  
Butadiene Rubber ◽  
Phenolic Resins ◽  
Oil Resistance ◽  
Acrylonitrile Butadiene Rubber ◽  
Cashew Nut

The influences of two phenolic resins, that is, cashew nut oil modified phenol-formaldehyde resin (CN-m-PF) and Bakelite moulding powder (BMP), on properties of carbon black filled acrylonitrile butadiene rubber (NBR) were investigated and compared. Processability, cure characteristics, mechanical properties, thermal ageing resistance, and oil resistance of the NBR filled with various contents of phenolic resins (0-60 phr) were determined. The addition of both resins leads to a prolonged cure time with a greater value of torque difference. Regardless of the resin type, the improvement of compound processability and the enhancement of modulus and hardness of the NBR vulcanisates are observed with increasing resin content. However, many mechanical properties such as tensile strength, elongation at break and abrasion resistance are deteriorated. Thermal ageing resistance of the NBR vulcanisate is slightly improved in the presence of both resins, probably due to the dilution of NBR with the high heat-resistant phenol-formaldehyde resins. Results also disclose that all NBR vulcanisates demonstrate excellent oil resistance, regardless of the resin type and content. At any given resin content, CN-m-PF gives a better processability, higher stiffness and greater mechanical properties than BMP. However, due to its lower cost, BMP can be used to enhance stiffness of NBR vulcanisates without the risk of processing problem.

Physico-mechanical characteristics and phase composition of unburned periclase-carbon refractories on modified phenol-formaldehyde resin

2019 ◽  
pp. 29-33
Author(s):  
D. A. Brazhnik ◽  
G. D. Semchenko ◽  
G. N. Shabanova ◽  
E. E. Starolat ◽  
I. N. Rozhko ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Phase Composition ◽  
Mechanical Characteristics ◽  
Carbon Materials ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Ethyl Silicate ◽  
Ammonium Citrate ◽  
Formaldehyde Resin

The possibilities of improving the physico-mechanical properties of periclase-carbon materials by modifying the phenol-formaldehyde resin (PFR) with organoinorganic complexes are described. The composition of the modifying additives, the phase composition of the materials after the PFR hardening are given, the influence of modifiers on the formation of the structure of materials is established. It is shown that the introduction of ethyl silicate or hydrolyzed ethyl silicate into liquid PFR during preparation of the charge contributes to the formation of SiC in the phase composition. The conclusion is made about the rationality of the introduction of ethyl silicate in an amount of from 0,66 to 1 wt. % and the prospects of introducing nickel oxalate into a liquid PFR together with ammonium citrate to increase the compressive strength of periclase-carbon materials up to 60 MPa. Ill. 7. Ref. 9.

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