What role do rubber accelerators play in rubber? 10

Accelerator plays a very important role in rubber vulcanization, adding a small amount of accelerator, can greatly accelerate the reaction between rubber and vulcanizing agent, improve vulcanization speed, reduce vulcanization temperature, shorten vulcanization time, reduce the amount of vulcanizing agent, improve the physical and mechanical properties of vulcanized rubber, such as improving tensile strength, tensile strength, wear resistance and hardness, etc., improve the aging resistance of vulcanized rubber, can prevent frost spraying, expand the use of vulcanized rubber, can manufacture transparent and various colors of rubber products. Therefore, accelerator has become one of the indispensable raw materials for the rubber industry. Bosses who have rubber accelerator needs, it is recommended to learn about Hebei Qingbenzhe Chemical Technology [click to learn more product details of Qingbenzhe Chemical].

At present, there are many types of accelerators used in the rubber industry, which can be divided into two categories according to their properties and chemical composition: inorganic and organic.

Inorganic accelerator is used at the earliest, but because of its low efficiency, poor vulcanized rubber performance, in addition to a small amount of use in individual cases, has been replaced by organic accelerator, organic accelerator has high efficiency, good vulcanization characteristics, excellent physical and mechanical properties and aging properties of vulcanized rubber, so that this kind of accelerator has been rapidly developed.

Hebei Qingbenzhe Chemical Technology Co., Ltd. always puts product quality and user interests in the first place, in all aspects of production, sales, service, etc., always from the perspective of users, carefully thinking about every detail, and taking the interests of users as the basis for evaluating right and wrong. The company's rubber accelerator, calcium and zinc stabilizer, lead salt stabilizer, zinc oxide and other products are sold at home and abroad. Warmly welcome friends from all walks of life to visit, guide and negotiate business.

It should play a role in speeding up the synthesis of rubber.

The hot vulcanized adhesive between rubber products and rubber products is the strongest, which can be bonded well and not break from the bonding surface.

Hot vulcanized adhesives are commonly known as hot vulcanized glues. It refers to the curing of glue by heating to bond the substrate together. According to different raw material ingredients, the common ones are silica gel hot vulcanization adhesive, rubber hot vulcanization adhesive, PU polyurethane hot vulcanization adhesive.

1. Silica gel hot vulcanized adhesive: there are four kinds of high and low temperature, molded silica gel hot bonding, and other hot vulcanized glue.

CL-26AB is a silica gel platinum hot vulcanization adhesive, which is suitable for platinum vulcanizing agent-catalyzed liquid silica gel and metal nylon lagging bonding; Mostly use two-component formulas, which are blended before use, devacuumed and then brushed.

High-temperature silicone metal adhesive, one-component, suitable for hot vulcanized silicone rubber and metal bonding at high temperature, and also has good compatibility with toughened glass, ceramic, epoxy resin and other substrates for nylon materials.

Molding silicone rubber adhesive, suitable for molding silicone tubes to bond each other into silicone sealing rings, according to the extruded silicone tubes of different vulcanizing agent systems, KL-301AB two-component is selected for platinum vulcanization, and glue poisoning needs to be paid attention to when using. Peroxide vulcanizing agent is more compatible with KL-301GABC three-component glue.

2. Rubber hot vulcanization adhesive: butyl rubber adhesive, representative product universal glue, suitable for hot vulcanized joints, rubber and metal, NBT rubber bottom bonding representative is Chemlock, etc.

3. Polyurethane hot vulcanized adhesive: different from water-based polyurethane hot melt adhesive, UPSA-933 is a special hot sulfur adhesive. It is made of AB two-component and produced according to the ratio according to the need.

It is used in the coating production of PET substrate protective film, with high transparency, stable peeling force, no residual glue and other defects.

Rubber and rubber small area with 308 glue, large area with T160 glue.

Rubber accelerator refers to rubber vulcanization accelerator. Rubber vulcanization is mainly carried out using sulfur, but the reaction between sulfur and rubber is very slow, so vulcanization accelerators came into being. The addition of accelerator to the rubber compound can promote the activation of the vulcanizing agent, thereby accelerating the cross-linking reaction between the vulcanizing agent and rubber molecules, and achieving the effect of shortening the vulcanization time and reducing the vulcanization temperature.

The main vulcanization accelerators used are divided into sulfonamides, thiazoles, thiurames, and some guanidines, thioureas and dithiocarbamate according to their chemical structure. Among them, the sulfonamide has the best comprehensive performance and is the most widely used.

Rubber accelerator is a post-effect accelerator of natural rubber, butadiene rubber, isoprene rubber, styrene-butadiene rubber and reclaimed rubber, which is usually used in the manufacture of cables, adhesive tapes, rubber shoes, inner tubes, bright color products, etc., especially suitable for carbon black rubber with strong alkaline. Safe at operating temperature, strong scorch resistance, fast vulcanization speed, high tensile strength, can increase the proportion of synthetic rubber. Low toxicity and high efficiency, it is an ideal alternative to NOBS, with excellent comprehensive properties, and is known as a standard accelerator.

It is widely used in the production of radial tires. It can be used in combination with aldehyde amine, guanidine and thiuram accelerators, and when combined with anti-scorching agent PVI, it can form a good vulcanization system. It is mainly used in the manufacture and production of tires, rubber shoes, hoses, tapes and cables.

Rubber accelerator DM is a general-purpose accelerator for natural rubber, synthetic rubber and reclaimed rubber, which is easy to disperse and not pollute in the rubber compound. Vulcanized rubber has excellent aging resistance, but the items in contact with vulcanized rubber are prone to bitter taste, so it is not suitable for rubber products in contact with food. It can be used to manufacture tires, hoses, tapes, tapes, general industrial rubber products, etc.

This product is usually used in combination with thiuram, dithiocarbamate, silica gel, guanidine accelerator to improve activity, and needs to be combined with zinc oxide and stearic acid. Usual dosage is 1-2 servings.

According to the different chemical structures, the accelerators can be divided into eight categories, including thiazoles, thiurames, sulfenamides, guanidines, dithiocarbamates, aldehydes, xanthates and thioureas. Bosses who have rubber accelerator needs, it is recommended to learn about Hebei Qingbenzhe Chemical Technology [click to learn more product details of Qingbenzhe Chemical].

1.Thuram accelerator: This kind of superspeed accelerator is an acid accelerator with short scorching time, fast vulcanization speed, uneven vulcanization curve and high vulcanization.

Generally, it is not used alone, but can be used in combination with thiazole HY29S10J2LWFM and sulfenamide accelerator to adjust the vulcanization time. Commonly used are accelerator TMTD, accelerator TMTM, etc.

2.Dithiocarbamate: It is an ultra-speed accelerator, with low activation temperature, fast vulcanization rate, high cross-linking, short scorching time, poor flatness, improper vulcanization operation, and easy to cause undersulfur or oversulfur. Commonly used accelerators include accelerator PZ, accelerator EZ, etc.

3.Xanthate accelerator: it is an acidic accelerator with a narrow flat area of sulfide and poor storage stability. Commonly used accelerator ZBX, accelerator ZIP, etc.

Hebei Qingbenzhe Chemical Technology Co., Ltd. has always firmly believed that the company's development is inseparable from the support and trust of customers, and the company's rubber accelerators, calcium and zinc stabilizers, lead salt stabilizers, zinc oxide and other products have been widely praised. The company will continue to deny the past, actively explore, and return users from all walks of life with high-quality products and services. Welcome friends from all walks of life to visit the factory to guide, discuss cooperation, the company is willing to work together with customers to create brilliant.

There are six types of rubber accelerators commonly used: [1].

Thiazoles: M (2-thiolylbenzothiazole), DM (dibenzothiazole disulfide) sulfonamides: CBS (N-cyclohexyl-2-benzothiazolesulfonamide), TBBS (N-tert-butyl-2-benzothiazolesulfonamide), NOBS (N-oxodiethyl-2-benzothiazolesulfonamide), dZ(N,n'- Dicyclohexyl-2-benzothiazolesulfonamide [2].

Thiuram species: TMTD (tetramethyl disulfide thiuram), TMTM (tetramethylthiuram monosulfide), TETD (tetraethylthiuram disulfide), DPTT (pentamethylthiuram hexasulfide) [3].

Thiocarbamates: ZDC (zinc diethyldithiocarbamate), BZ (zinc dibutyldithiocarbamate), PZ (zinc dimethyl dithiocarbamate).

Guanidine: D (diphenylguanidine) other.

Summary. Accelerator It can make the silica gel molecular chain cross-link, so that the linear molecules form a three-dimensional network structure, the plasticity is reduced, and the strength of the elastic agent is increased. In addition to some thermoplastic silicones that do not require accelerator, natural rubber and various synthetic rubbers need to be formulated with accelerators for promotion.

Silica gel has valuable use value after promotion, and its mechanical properties are greatly improved. It has the effect of not sticking and not easy to break. and insolubility in organic solvents, etc.

Silica gel has valuable use value after promotion, and the mechanical properties are greatly improved.

Hello, happy to answer your questions.

2. Silica gel promotion: Silica gel accelerator is mainly used for silica gel molding. Accelerating the molding speed of silica gel and the anti-yellowing effect can be divided into many types of mascots. Nowadays it is common to make mobile phone shells, headphone cap renderings, and false chests. It can also be coated with insulation.

Accelerator It can make the silica gel molecular chain cross-link, so that the linear molecules form a three-dimensional network structure, the plasticity is reduced, and the strength of the elastic agent is increased. In addition to some thermoplastic silicone rubber that does not need to be promoted, natural rubber and various synthetic rubbers need to be promoted by a promoter. Silica gel has valuable use value after promotion, and its mechanical properties are greatly improved.

It has the effect of not sticking and not easy to break. and Zhao group insolubility in organic solvents, etc. Silica gel has valuable use value after promotion, and the mechanical properties are greatly improved.

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Rubber and rubber quick-drying can be bonded with HY-308 glue, and slow-drying can be bonded with HY-T160 glue. HY-308 metal rubber glue is mainly used for rapid bonding between various plastics, rubber, metal jewelry, electronic and other high-tech products, wood products, etc., with strong adhesion. HY-T160 PP PE slow adhesive adhesive is mainly used for bonding various difficult plastic products such as:

Polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), ABS, nylon, sponge, film, foam, etc.; It also has good adhesion to plexiglass, rubber, metal, bamboo, wood, fabric and paper, especially for the mutual adhesion and cross-bonding of plastic and metal and non-metallic materials, which is an ideal adhesive material for home appliance industry, radio industry, decoration and decoration, craft toys, thermal insulation materials, packaging and printing industries. Hope mine can help you! <>