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Formulation Of New Neoprene Adhesive

2008/8/11 9:46:00 41776

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Neoprene adhesive, referred to as chloroprene rubber adhesive, accounts for more than 70% of the total amount of synthetic rubber adhesive, and is also the most important kind of rubber adhesive.

The base of neoprene adhesive is neoprene, which has cohesion, medium polarity and crystallinity.

These characteristics make adhesives have strong adhesive force. If they are equipped with accelerants, antioxidants, tackifier, crosslinking agents and other auxiliaries, they can be made of chloroprene adhesive with special properties.

The phenolic resin modified by this agent has stronger adhesion and wider use.

1. characteristics and uses

Because of its polar group, the adhesive has strong adhesion, excellent toughness, flexibility and flexural properties.

It has excellent oil resistance, chemical resistance, weathering resistance, anti-aging and so on.

It is mainly used for bonding rubber, leather, fabric and metal.

2. raw materials

(1) neoprene, a synthetic rubber, is chloroprene.

Polymer.

Soluble in benzene and chloroform and other organic solvents.

Slightly swelling and insoluble in mineral oils and vegetable oils.

It has the properties of oil resistance, flame resistance, heat resistance, acid and alkali resistance, high tensile strength and air tightness.

The main raw materials of this agent are industrial products.

Production plant: Sichuan longevity Chemical Plant, Shanxi chemical plant (Datong), Qingdao chemical plant.

(2) Zinc Oxide sees a Chinese (two) kojic cream.

This agent is used as a filler.

Choose industrial products.

(3) accelerator D is also known as two phenyl guanidine and accelerator DPG.

Molecular formula C13H13N3.

White powder.

Odorless and bitter.

Density 1.13 - 1.16g / cm ', melting point 144~146 C.

Soluble in benzene, chloroform, ethanol, acetone, ethyl acetate, insoluble in gasoline and water.

Used as intermediate accelerator for natural rubber and synthetic rubber, often used in conjunction with DM and TMTD.

This agent is used as an accelerator.

Choose industrial products.

Production plant: Shenyang Xin Sheng chemical plant, Jilin Tonghua third chemical plant, Zhejiang Huangyan chemical plant, Lanzhou chemical industry company.

(4) N - phenyl - 2 naphthalene is referred to as antioxidant D and antioxidant J.

Light gray needle like crystals.

The density is 1, 18G / cm3, melting point is 108 degrees, boiling point is 395.5 degrees.

Soluble in acetone, ethyl acetate, benzene, carbon disulfide, soluble in ethanol, carbon tetrachloride, insoluble in gasoline.

Exposed to air and gradually turned to gray red under sunlight.

It is irritating to the skin and toxic.

This agent is used as an antioxidant.

Choose industrial products.

Production plant: Tianjin Wuyi chemical plant, Jilin Jiaohe Chemical Auxiliaries Factory, Mudanjiang pesticide plant, Nanjing chemical plant, Qingdao Cangkou chemical plant, Jiaozuo chemical plant, Wuhan Spark chemical plant, Chongqing Dongfeng Chemical Plant.

(5) tert butylphenol formaldehyde resin formula (C~lHl40).

The average molecular weight is 550~750.

Light yellow to dark brown plucent amorphous brittle solid.

Soluble in benzene, toluene, gasoline, ethyl acetate, insoluble in water.

This agent is used as adhesive.

Choose industrial products.

Production: Beijing Yongle Dian chemical plant, Liaoyang Binhe chemical plant, Jilin Shuangyang resin factory, Shanghai Xinhua resin factory, Hubei Xiangfan Hongwei resin factory, Xi'an resin factory.

(6) Magnesium Oxide white amorphous powder.

Odorless and tasteless.

Soluble in acid and ammonium salt solution, insoluble in water and ethanol.

It is easy to combine with water, absorb moisture and carbon dioxide in the air, and mix with magnesium chloride solution, easy to gel and harden.

This agent is used as a filler.

Choose industrial products.

Production plant: Shanghai Songjiang TA Hui Xiang Venus chemical plant, Wenzhou Liaoyuan Chemical Plant, Guangdong Shantou chemical plant.

(7) accelerator TMTD is also called accelerator TT, two and four methyl methyl sulfate.

White crystalline powder.

Tasteless.

Soluble in benzene, acetone, chloroform, carbon disulfide, slightly soluble in ethanol and ethyl ether, insoluble in water, dilute alkali, gasoline.

It can stimulate skin and mucous membrane.

This agent is used as an accelerator.

Choose industrial products.

Production plant: Shenyang Xin Sheng chemical plant, Shanghai Changjiang chemical plant, Zhenjiang second chemical plant, Zhejiang Huangyan chemical plant, Lanzhou chemical industry company.

(8) there are many isomorphs in sulfur.

The appearance is yellow or yellowish massive, powdery, granular or flaky.

This agent is used as a vulcanizing agent.

Choose industrial products.

Almost all provinces in China have production.

(9) ethyl acetate is found in five (nine) multifunctional paint remover.

This agent is used as solvent.

Choose industrial products.

(10) solvent naphtha is 120 solvent naphtha.

3. formula (quality portion)

Neoprene 100 Zinc Oxide 5 accelerator D 1 N - phenyl 2 naphthalene 2 tert butylphenol formaldehyde resin 100 Magnesium Oxide 8 promoter TMTD 1 sulfur 0.5 ethyl acetate 270 solvent gasoline 130

4. preparation and Application

(1) mixing chloroprene rubber, tert butylphenol formaldehyde resin, Zinc Oxide, Magnesium Oxide, accelerator D and accelerator TMTD, N - phenyl - 2 naphthalene, sulfur together.

(2) adding ethyl acetate and solvent gasoline to dissolve the mixture and stir it evenly to get the finished product.

The method is the same as ordinary adhesive.

Its shear strength: leather leather 2.2MPa, rubber rubber 2.4MPa, steel rubber 3.OMPa