CN1065082A

CN1065082A - A kind of modified version neoprene graft binding agent and manufacture method thereof

Info

Publication number: CN1065082A
Application number: CN 91106357
Authority: CN
Inventors: 辛辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-03-15
Filing date: 1991-03-15
Publication date: 1992-10-07
Anticipated expiration: 2006-03-15
Also published as: CN1029003C

Abstract

The present invention is a kind of neoprene graft binding agent and manufacture method thereof, used material is except chloroprene rubber, magnesium oxide, zinc oxide and antioxidant D, also have methyl methacrylate, cobalt naphthenate, unsaturated polyester, vinylbenzene and tert butyl phenolic resin, graft reaction takes place in these materials in the reactor of 70-80 ℃ of maintenances.Used solvent can be benzene, toluene, N-BUTYL ACETATE, gasoline, acetone or its mixture.The tackiness agent stripping strength height that makes, stable, heat-resisting, water-fast, toxicity is little, and cost is low.

Description

A kind of modified version neoprene graft binding agent and manufacture method thereof

The invention belongs to a kind of is the tackiness agent of base-material with the chloroprene rubber.

Chloroprene rubber claims that again neoprene is the α polymer of chloroprene, and it is used for making the existing history for many years of tackiness agent.Chloroprene rubber when its trans 1,4 structure

When occupying larger proportion, its outstanding characteristics are the fast and degree height of crystallization velocity, and force of cohesion is big, and is at room temperature just very easily coalescent, can obtain higher bond strength.At present, when making tackiness agent with chloroprene rubber, except the chloroprene rubber of adhesion type, add a certain amount of zinc oxide, magnesium oxide and antioxidant D again, wherein magnesium oxide is the hydrogenchloride receptor, zinc oxide is vulcanizing agent, the practice is earlier mixing on rubber mixing machine, pulls into sheet again, chopping, then it is put in the reactor that solvent is housed and stir, be a kind of tackiness agent after the dissolving evenly.Here used solvent has benzene, toluene, butylacetate, trichloroethane.The tackiness agent that makes like this exists many shortcomings, and for example toxicity is bigger, causes layering easily, poor stability, and bond strength is not high enough.

The object of the present invention is to provide a kind of follow-on neoprene adhesive, it has improved cohesive strength, has reduced cost.

In the present invention, except the chloroprene rubber of above-mentioned substance, zinc oxide, magnesium oxide, antioxidant D, also used some can produce the material of graft reaction, its reaction product has higher bond strength.Material and shared weight percent thereof used among the present invention are LDJ-240 chloroprene rubber 8-21, magnesium oxide 1-2, zinc oxide 0.5-1.5, antioxidant D 0.3-0.7, methyl methacrylate 2-11, cobalt naphthenate 0.1-0.6, unsaturated polyester 5-9, vinylbenzene 0.1-5, tert butyl phenolic resin 0.5-1.5; Solvent can be used benzene, toluene, N-BUTYL ACETATE, gasoline and acetone, use separately or its mixture all can, shared percentage ratio is 35-50.Manufacture method is that 3/4 chloroprene rubber with calculated amount is placed on the open roller rubber mixing machine and plasticates 15 times, adding an amount of magnesium oxide, zinc oxide and antioxidant D subsequently continues mixing, above-mentioned plasticate and mixing in to often play the triangle bag, even to guarantee refining glue, put into all the other chloroprene rubbers of 1/4 again, refine 4 times again, it is in blocks to have refined post-tensioning, shred, and it is put in the reactor that chuck is arranged that proper amt and kind kind solvent are housed.After the dissolving evenly, make the temperature in the reactor be controlled at 70～80 ℃ to the logical hot water of reacting kettle jacketing, put into methyl methacrylate, vinylbenzene, cobalt naphthenate, tert butyl phenolic resin, the unsaturated polyester of proper amt with this understanding, carried out graft reaction 2 hours, form stable multipolymer, the monomer whose percent polymerization is about 55%.Just obtain neoprene graft binding agent through naturally cooling; It is a kind of flaxen thick liquid, and its stable performance is deposited in lucifuge, drying and airtight environment and can be reached more than 2 years not stratifiedly, and toxicity is little, the stripping strength height.Example 1 is used this products with adhesive at the bottom of with pig leather and vulcanized rubber, and surveying its stripping strength after 72 hours is 60.7N/cm, and sees that vulcanized rubber basal surface part is destroyed.With its stripping strength of the bonding survey of existing neoprene adhesive is 40.8N/cm.Example 2: with bonding with this tackiness agent at the bottom of sheep and the rubber and plastic, surveying its stripping strength after 72 hours is 58.6N/cm, and the rubber-sole surface local is destroyed, and it is bonding to use existing neoprene adhesive instead, and surveying its stripping strength is 37.4N/cm.Example 3: with at the bottom of the rubber and plastic with this products with adhesive of PVC used for artificial leather, surveying them after 72 hours, to have peeled off intensity be 56.5N/cm, and PVC leatheroid surface local is destroyed, it is bonding to use existing neoprene adhesive instead, surveying its stripping strength is 36.4N/cm.Example 4: bonding with the PU synthetic leather at the bottom of with vulcanized rubber with this product, surveying its stripping strength after 72 hours is 54.6N/cm, and PU synthetic leather surface local is destroyed, and it is bonding to use existing neoprene adhesive instead, and surveying its stripping strength is 34.3N/cm.The method of bonding sample and determining bonding strength carry out with neoprene adhesive standard GB7126-86 by footwear.This product has the excellent water tolerance energy, and adherend steeps 240 hours intensity no changes continuously in water, and has heat resistance preferably, and adherend toasted 6 hours under 50 ℃ temperature continuously, and its stripping strength does not have considerable change.This product cost is lower by about 8% than existing neoprene adhesive, so it has the very strong market competitiveness.Particularly, use tackiness agent of the present invention can save this procedure of surface treatment (mechanical grinding or pre-coating solution corrosion etc.), but when bonding, need make its no greasy dirt in surface and foul materials such as PVC leatheroid, PU synthetic leather, nylon cloth, pig suede leather, imitative sheep leathers.To at the bottom of other materials such as natural leather, vulcanized rubber, modified PE foam sheet, the rubber imitation leather, at the bottom of the PVC plastic shaping etc., use tackiness agent of the present invention all to need be attached to its surperficial dust through mechanical grinding and Ex-all.

Embodiment:

The LDJ-240 chloroprene rubber of 15 parts (by weight, down with) is placed on plasticates 15 times on the open roller rubber mixing machine, add 1.5 parts of magnesium oxide, 1 part of zinc oxide and 0.5 part of antioxidant D then and carry out mixing.Plasticating and will often to play the triangle bag when mixing even to guarantee refining glue, put into 5 parts of chloroprene rubbers again, refine again 4 times, pull into sheet then, shred and put in the reactor that 12 parts of toluene, 18 parts of N-BUTYL ACETATEs, 10 parts of gasoline and 13 parts of acetone are housed and dissolved 4 hours, dissolving evenly back feeds hot water to reacting kettle jacketing, making temperature in the kettle is 80 ℃, put into 10 parts of methyl methacrylates, 4 parts of vinylbenzene, 0.5 part of cobalt naphthenate, 1.5 parts of tert butyl phenolic resins and 8 parts of unsaturated polyesters and carry out graft reaction, promptly obtain stable neoprene graft binding agent after 2 hours.

Claims

A kind of neoprene graft binding agent and manufacture method thereof, it is characterized in that used material and shared weight percentage are: LDJ-240 chloroprene rubber 8-21, magnesium oxide 1-2, zinc oxide 0.5-1.5, antioxidant D 0.3-0.7, methyl methacrylate 2-11, cobalt naphthenate 0.1-0.6, unsaturated polyester 5-9, vinylbenzene 0.1-5, tert butyl phenolic resin 0.5-1.5, solvent can be N-BUTYL ACETATE, benzene, toluene, gasoline, acetone or its mixture, and shared weight percent is 35-50; Described manufacture method, it is characterized in that the chloroprene rubber of calculated amount 3/4 is plasticated 15 times on open roller rubber mixing machine, then add magnesium oxide, zinc oxide and antioxidant D continue mixing, plasticate and mixing in to often play the triangle bag, wait to refine glue evenly after, put into all the other chloroprene rubbers of 1/4 again, refine again 4 times, it is in blocks to have refined post-tensioning, shred and it is thrown in the reactor that chuck is arranged that solvent is housed, after dissolving evenly, to the logical hot water of reacting kettle jacketing, under 70～80 ℃ condition, put into methyl methacrylate, vinylbenzene, cobalt naphthenate, tert butyl phenolic resin and unsaturated polyester carry out graft reaction.