SU704961A1 - Rubber mixture based on unsaturated rubber - Google Patents

Description

I

The invention relates to the rubber industry and can be used in production. rubber products.

Rubber compounds are known; plasticizers, in addition to other components (fillers, accelerators, anti-scorching agents), in particular products of petroleum origin, processing of coal, recycling and animal origin, as well as various synthetic products 11,

The most common plasticizers for rubber compounds are synthetic products (esters) and refined products.

The esters (phthalates, sebacinae, etc.) are well combined with most rubbers and are used mainly in rubber compounds intended for cold-resistant rubbers.

Using them for other purposes is impractical not only because of their relatively high cost, but also due to a decrease in the introduction of these plasticizers with the mechanical properties of vulcanizates (strength and modulus during stretching, resistance to tearing).

The aim of the invention is to increase fatigue strength, tear resistance and puncture of rubber compounds obtained from the mixture and expand the range of plasticizers.

This goal is achieved by the fact that a rubber mixture based on non-adhering rubber, including a filler, an activator, an anti-aging agent, an accelerator, a vulcanizing agent, contains the product of thermal polymerization of distillation residues of crude benzene fractions with a viscosity of 120 s. (resin STK-5) in the following ratio of components, weight.h, unsaturated rubber100

Filling 50-70

Plasticizer 5-25

Activator3-5

Antioxidant Accelerator Vulcanizing agent Resin STK-5 is dark brown, almost black, viscous liquid, contains polymers, co-liners, cTiipuria, qumarin and their goylogogs. styophene and its homologues, piperylene (sch1c- and transf6 () C1s), as well as sodium coYm sulfonic acids and sodium sulfate. (The ergany part of STK-5 resin is 95-99%, ash is 0-5%, water is 0-1%, sulfur is elemental up to 0.5%, sulfur is 46% common. The average molecular weight of the resin is 270-4 (3. Curl with ZOC - 1.18 1, 24 g / cm. EXAMPLE 1. S rubber mixture is of a horo type for large-size tires afterwalmVb composition (weight.h): styrene ftaychuk CkC-JO ARK - 100, ZnO - 5.6; phthalic anhydride — 0.5; product 4010 — 2.0; oleic acid –2.6; technical carbon (PM-100 $ 0.6; sulfur — 1.7; santocur — 1.2 inlet 6.0 parts by weight STK resin. Vulcanization is carried out on 1 press for 25 minutes at a temperature ;;;.;; ;; 8 Table 1 presents comparative data data of the properties of the vulcanizates obtained for the claimed rubber mixture containing, as a plasticizer, STK resin, and known with oil PN-6. Example 2: In a tread rubber mixture for passenger VJKH composition, parts by weight : S1SHS-30 ARK-20.0: SKYS-30 ARKM-27-20,0; YSch - 40.0 S1SI-3-20,0; 2nQ - 3,5; Canifs, Volcano mode-5S1-3.0, Ave 4010 1 , 5; anpvdrid phthalic 6.5; acid. and oleic - 2.0; wax 2.0; carbon black (PM-100) -65i, 0; sulfur - 1.7; Santakyur - 1.0 enter 7.0 weight.h. resin STK ..:. Vulcanization is carried out in a press for 25 minutes at a temperature of 153 ° C. Table 2 shows the comparative characteristics of the properties of vulkakizat and raw rubber mixture, obtained using the resin STK and oil PN-6. Example 3. In the rubber mixture composition, parts.h .: SKNS-30 ARH-100,0; stearin 2, 0; ZnO - 5.0; carbon black (DG-100) 50, 0; sulfur - 2.0; altax - 2.87, 25 parts by weight were introduced. resin STK yLi oil PN-6. Vulcanization is carried out in a press at a temperature of 151 ° C for 80 minutes. Example 4. In the rubber mixture composition, parts.h .: SKI-3-100,0; stearin - 2.0; ZnO - 5.0; neozon D 0.3; product 4010 0, 6; carbon black (DG-100) - 50.0; sulfur - 2.0; Santakur - 1.5, enter 5.0 weight.h. STK resin or oil PN-6. Vulcanisation is carried out in a press at a temperature of 143 ° C for 40 minutes. . Rezinovtle mixture, containing as a plasticizer resin STK, have, by comparison with the content of oil PN-6 ulz shennyn KOMLpeks with operational properties - fatigue endurance, resistance to tearing and puncture. Table 1 With 25 min.

1. Stress at elongation, 300%, kgf / cm,

2. Resistance rupture, kgf / cm

3. Relative elongation,%

4. Residual elongation,%

5. Hardness, TM-2

6. Resistance to tear, kgf / cm

-, ; :; ... - .. ...-..-...,%

7. Resilience, cm / kW.h.

2

8. Puncture prevention, kgf / cm

124

218

560

sixteen

66

75

208

695

9. Resilience endurance before destruction, ths. Cycle. (Estr-100%, Unity-200%),

10. Thermal Elder Ratio

(100 C-72.

tear resistance

relative elongation

 1. Temperature resistance coefficient at 100 ° С: according to the resistance of the razryu

relative)

H ,, M j, 4 iniijf ljl ugrr Ili- - -V-n AmfMII. I MCD I .fc, fff, f.

Comparative davshie svGgst rubber compound and vulcanisatosis, containing as plasticizers

1. Plasticity according to Carrera

2. Time podvulkanizatsin on Flour at 130 ° C, min

3. Voltage at elongation 300%, kgf / cm

4. Resistance rupture, kgf / cm

5. Relative lengthening,%

6. Residual elongation,%

7.TM-2 hardness

8. Elasticity on rebound,%

17.000

37.000

Table 2 resin STK and oil PN-6

1. Rubber compound

0.241

0.283 15.5 15.5

I. Vunkanizaty

104

194

515

sixteen

66

34

12. Resistance to abrasion

cm / kw.h ..

13. Resistance to repeated deformations

dilution, thousand cycles

(Eats. 100%)

(Eden. - 200%)

Comparative data properties of rubber containing as a plasticizer oil PN-6 and resin (STK)

1. Plasticity

2. The strength of the lree thinned,

kgf / cm

3. Relative elongation,%

4. Residual elongation,%

5. Hardness, TM-2

6. Elasticity on rebound,%

163

66580

Table 3

0.28

154

550

20

60

40

Comparative data properties of rubber containing as a plasticizer oil PI-6 and resin (STK)

Claims (1)

Invention Formula RbzinGova mixture based on non-adhered rubber, including napo: 1nitel, plasticizer, activator, antioxidant, accelerator, vulcanizing agent, characterized in that, in order to increase fatigue strength, tear resistance and puncture, obtained from it, expand the assortment plasticizers, as the latter mixture contains the product TepMiMet of polymerization of the bottom residues of the distillation of raw fractions of crude benzene with in Table 4 Bone CaQ 20 - 120 s, with the following ratio of components, parts by weight: Unsaturated rubber 100 Filling 50-70 Plasticizer 5-25 Activator3-5 Antioxidant 0.5-2.0 Accelerator1.0-3.0 Curing agent1.5-2.0Sources of information taken into account during the examination I. Handbook of rubberman, ed. ,, Himi, M., 1971, p.440 (prototype).