CN102190994A

CN102190994A - Production method for chloroprene rubber adhesive

Info

Publication number: CN102190994A
Application number: CN2010101240004A
Authority: CN
Inventors: 张耀华
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-15
Filing date: 2010-03-15
Publication date: 2011-09-21

Abstract

The invention discloses a production method for a chloroprene rubber adhesive. The product produced by the production method is a high-performance adhesive. The adhesive is produced by using chloroprene rubber as a main body and using raw materials including styrene, silicon dioxide, magnesium oxide, zinc oxide, polyisocyanates, polyester resin, vinyl trisilane, antiaging agent D and the like and by a certain process. The product is mainly used in the building industry for adhering ethylene propylene diene monomer rubber waterproof coiled material, chlorinated polyethylene-rubber blended waterproof coiled material, chlorinated polyethylene waterproof coiled material, sulfurized rubber plastic waterproof coiled material, chlorinated polyethylene plastic floorings and calcium plastic plates with concrete, cement, asbestos boards, wood and other materials.

Description

A kind of production method of neoprene adhesive

Affiliated technical field:

Product of the present invention belongs to chemical field

Background technology:

With the chloroprene rubber is that the tackiness agent that material of main part is made is called neoprene adhesive.Chloroprene rubber just can be mixed with neoprene adhesive through dissolution with solvents, but poor-performing, thereby various neoprene adhesives commonly used all are based on chloroprene rubber, add various Synergist S-421 95s, as resin, vulcanizing agent, promotor, filler etc. to improve the performance of tackiness agent.The same vulcanization system that can add with natural rubber of chloroprene rubber vulcanizes, and makes its chain-like structure form netted or body shape structure, and intensity is strengthened.The most frequently used vulcanizing agent of chloroprene rubber is magnesium oxide and zinc oxide.In general, this vulcanization system 140 ℃ high temperature vulcanized, but in fact the neoprene adhesive of self-vulcanizing also often adds magnesium oxide, zinc oxide.General 100 parts of chloroprene rubbers add 5 parts of zinc oxide and 4 parts of magnesium oxide just can obtain satisfied result.Other vulcanization system is less use in neoprene adhesive.Usually add the resistance toheat that anti-aging agent improves chloroprene rubber in the neoprene adhesive, delay its thermolysis, and improve glue stability.Anti-aging agent commonly used is the naphthylamines class, as antioxidant D, antideteriorant BHT etc., will consider when selecting anti-aging agent that the consistency of itself and chloroprene rubber is good, outside delaying retrogradation is effective, also will consider not influence processing characteristics, factor such as nontoxic.The consumption of anti-aging agent in neoprene latex is generally 2%.Neoprene adhesive can use promotor to improve the resistance toheat of tackiness agent, and commonly used have polyisocyanates, Thiourea and an amine.The solvent of neoprene adhesive, in the solvent type chloroprene rubber adhesive agent, choice of Solvent is very important.Concentration, viscosity, glue stability, evaporation rate, viscosity that it not only directly has influence on glue keep aspects such as phase, initial bonding strength, and have influence on bonding strength.Chloroprene rubber is soluble in aromatic hydrocarbon and the chlorinated hydrocarbon in general.From bonding angle, beyond the selected solvent decapacitation dissolving chloroprene rubber, also will consider following factor: 1, help soaking into the adherend surface, promptly its surface energy will be lower than the surface energy of adherend; 2, can increase the flowability of tackiness agent molecule, be convenient to glue and be penetrated in the adherend and go.

Summary of the invention:

The invention provides a kind of is the method that base-material is produced tackiness agent with chloroprene rubber, and its product is mainly used in the bonding of construction industry to materials such as EPDM rubber waterproof rolling material, chlorinatedpolyethylene-blend rubber waterproof roll, chlorinated polyethylene waterproof roll, sulfide type rubber and plastic waterproof roll, polychlorostyrene vinyl plastics floor, calcium-plastic board and concrete, cement, asbestos plate, timber.Producing the raw material that this tackiness agent uses has: 1. 20 parts of chloroprene rubbers (major ingredient); 2. 50 parts of vinylbenzene (solvent); 3. 8 parts of silica 1s (filler); 4. 1 part in magnesium oxide (vulcanizing agent); 5. 1 part in zinc oxide (vulcanizing agent); 6. 3 parts of polyisocyanates (promotor); 7. 3 parts in vibrin (properties-correcting agent); 8. 2 parts of vinyl tris silanes (tackifier); 9. antioxidant D is 2 parts.

The beneficial effect of product of the present invention is: this adhesive bonds intensity height, and applied range, water-fast protection against the tide, easy to use.

Embodiment

Embodiment:

1. chloroprene rubber is put into container for 20 parts, be warmed up to more than 140 ℃, make chloroprene rubber become molten state, 1 part in zinc oxide of adding, magnesium oxide stir for 1 part, react 1 hour postcooling.

Above-mentioned cooled solid in container and 50 parts of mixing of vinylbenzene, all dissolve until chloroprene rubber, add 3 parts of polyisocyanates, 3 parts in vibrin, 2 parts of vinyl tris silanes, reaction 1 hour stirs.

3. in above-mentioned reaction solution, add 2 parts of antioxidant Ds, 8 parts of silica 1s, continue stirring and obtained packing behind the finished product in 20 minutes.

Claims

1. the production method of a neoprene adhesive is characterized in that with 20 parts of 1. chloroprene rubbers (major ingredient); 2. 50 parts of vinylbenzene (solvent); 3. 8 parts of silica 1s (filler); 4. 1 part in magnesium oxide (vulcanizing agent); 5. 1 part in zinc oxide (vulcanizing agent); 6. 3 parts of polyisocyanates (promotor); 7. 3 parts in vibrin (properties-correcting agent); 8. 2 parts of vinyl tris silanes (tackifier); 9. antioxidant D is a raw material for 2 parts, passes through the first step: sulfuration; Second step: modification tackify; The 3rd step: strengthen and anti-personated old man's output finished product.

2. the production method of neoprene adhesive according to claim 1, the feature of its first step is that chloroprene rubber is put into container for 20 parts, is warmed up to more than 140 ℃, makes chloroprene rubber become molten state, 1 part in zinc oxide of adding, magnesium oxide stir for 1 part, react 1 hour postcooling.

3. the production method of neoprene adhesive according to claim 1, its second the step feature be above-mentioned cooled solid in container with 50 parts of mixing of vinylbenzene, all dissolve until chloroprene rubber, add 3 parts of polyisocyanates, 3 parts in vibrin, 2 parts of vinyl tris silanes, reaction 1 hour stirs.

4. the production method of nitrile rubber adhesive according to claim 1, its 3rd step is characterised in that and adds 2 parts of antioxidant Ds, 8 parts of silica 1s in above-mentioned reaction solution, continues to stir to obtain packing behind the finished product in 20 minutes.