High-strength laminated fire-retarding conveyer belt coating rubber, and preparation method thereof
A covering layer and conveyor belt technology, which is applied in the field of high-strength laminated flame-retardant conveyor belt covering rubber and its preparation, can solve the problems of incapable of high mechanical properties, poor flexibility, poor toughness and softness, etc. It is difficult to balance mechanical strength and excellent flame retardant performance, improve flexibility and strength, and improve the effect of mechanical strength
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Example Embodiment
[0032] Example 1
[0033] Add 500g styrene-butadiene rubber (commercially available SBR1502) to the double-cylinder mill for mastication, and then add metal oxides: 15g nano-zinc oxide, 10g nano-magnesium oxide and 5g stearic acid, antioxidant: 2, 2, 4 -Trimethyl-1,2-dihydroquinoline polymer (RD) 5g, N-phenyl-N′-yl-p-phenylenediamine (4010NA) 10g, flame retardant: chlorinated paraffin 150g, two trioxide Antimony 40g and zinc borate 40g, reinforcing agent: surface-modified silica 250g, nano-magnesium hydroxide 100g, finally add vulcanization accelerator 2-thiol benzothiazole (M) 10g, N-tert-butyl-2 -Benzothiazole sulfenamide (NS) 5g and N-cyclohexyl-2-benzothiazolyl sulfenamide (CZ) 5g, sulfur 10g as vulcanizing agent. Mix uniformly on an open mill to obtain a covering layer adhesive; vulcanize the covering layer adhesive and the adhesive layer on a molding vulcanizing plate at 150°C to obtain the product. The properties are shown in Table 1.
[0034] The high-strength laminated flam
Example Embodiment
[0035] Example 2
[0036] On the double-roller mill, add 400g styrene butadiene rubber (commercially available SBR1502), 100g butadiene rubber (commercially available BR9000) for mastication, and then add activator metal oxide: 15g nano zinc oxide, 10g nano magnesium oxide and hard Fatty acid 5g, antioxidant: 2,2,4-trimethyl-1,2-dihydroquinoline polymer (RD) 5g, N-phenyl-N′-yl-p-phenylenediamine (4010NA) 10g, Flame retardant: 140g of chlorinated paraffin, 50g of antimony trioxide and 60g of zinc borate, reinforcing agent: 275g of surface-modified silica, 125g of nano-magnesium hydroxide, and finally add vulcanization accelerator 2-thiol benzothiazole (M) 10g, 5g of N-tert-butyl-2-benzothiazolyl sulfenamide (NS) and 5g of N-cyclohexyl-2-benzothiazolyl sulfenamide (CZ), sulfur 10g as vulcanizing agent. Mix uniformly on an open mill to obtain a covering layer adhesive, and then vulcanize the covering layer adhesive and the adhesive layer on a molding vulcanizing plate at 150°C to obta
Example Embodiment
[0037] Example 3
[0038] Add 300g styrene-butadiene rubber (commercially available SBR1502) and 200g natural rubber (commercially available natural rubber 10#) on the double-cylinder mill for mastication, and then add activator metal oxide: 20g nano zinc oxide, 5g nano magnesium oxide And stearic acid 5g, anti-aging agent: 2-mercaptobenzimidazole (MB) 5g, N-phenyl-N′-yl-p-phenylenediamine (4010NA) 10g, flame retardant: chlorinated paraffin 100g, two trioxide Antimony 60g and zinc borate 75g, reinforcing agent: surface-modified silica 275g, nano calcium carbonate 150g, finally add vulcanization accelerator 2-mercaptobenzothiazole (M) 5g, tetramethylthiuram disulfide (TMTD) 5g and N-cyclohexyl-2-benzothiazolyl sulfenamide (CZ) 5g, the vulcanizing agent is sulfur 10g. Mix uniformly on an open mill to obtain a covering layer adhesive, and then vulcanize the covering layer adhesive and the adhesive layer on a molding vulcanizing plate at 150°C to obtain a flame-retardant conveyor belt.
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