CN105038642A - Waterproof hot melt adhesive containing butyl rubber - Google Patents

Abstract

The invention discloses a waterproof hot melt adhesive containing butyl rubber. The waterproof hot melt adhesive is prepared from the following raw materials in parts by weight: 45-50 parts of EVA, 30-40 parts of modified tackifying resin, 2-3 parts of cumene hydrogen peroxide, 1-3 parts of di-aminodecane, 0.5-0.9 part of citric acid, 0.5-1 part of stearic acid, 1-2 parts of sodium dodecyl benzene sulfonate, 1-3 parts of dioctyl terephthalate, 12-15 parts of butyl rubber, 1-2 parts of dodecyl trimethyl ammonium chloride, 10-20 parts of attapulgite, 40-55 parts of kaolinite and 1-3 parts of epoxy linseed oil. The raw materials of the EVA hot melt adhesive containing butyl rubber are excellent in dispersibility, and the high water tightness and the mechanical property are maintained.

Description

A kind of waterproof hot melt containing isoprene-isobutylene rubber

Technical field

The invention belongs to binding agent field, particularly relate to a kind of waterproof hot melt containing isoprene-isobutylene rubber.

Background technology

EVA hot-melt adhesive is formulated by EVA resin, tackifier, softening agent, antioxidant, filler etc.In society now, EVA hot-melt adhesive applied range, consumption are maximum.It has excellent adhesiveproperties, nearly all has hot sticky relay to various material; Excellent electric property; And its melt viscosity is low, applying glue is convenient; With the feature such as the consistency of other Synergist S-421 95s is good.EVA hot-melt adhesive has been widely used in shaping, many fields such as automobile and building materials of the bookbinding of books, bonding, ceramic etc. the reparation of the packaging, plastics etc. of food, mounting, clothes and shoes and hats.Because EVA resin is a kind of thermoplastic resin, high and low temperature resistance is limited, softening temperature is low, and main auxiliary material tackifier are all the polymkeric substance of molecular weight mostly, just play reduction melt viscosity, improve the effect of wetting ability and initial cohesiveness, itself is high-low temperature resistant not, causes the shortcoming of EVA hot-melt adhesive not high-low temperature resistant; Simultaneously also there is lower, the not resistance to fatty oil of adhesiveproperties, easily produce skinning and be not suitable for the shortcomings such as big area coating is bonding in EVA hot-melt adhesive.

At present, along with developing rapidly of PET industry, waste PET quantity also increases thereupon, thus brings serious pollution to environment.How to recycle waste PET, become one of focus of research at present.PET reclaims and mainly comprises physiochemical mutagens and chemical recovery two kinds of methods, physiochemical mutagens method cost is lower, but after physiochemical mutagens, the Mr(relative molecular mass of material) and limiting viscosity all reduce, the PET product be made up of physiochemical mutagens material can not be reused this way and recycle; Chemical recovery makes PET generate micromolecular compound by chemical reaction, and the performance of this method products therefrom is more excellent.Chemical recovery technique can be divided into hydrolysis, ammonia solution and alcoholysis etc. (wherein alcoholysis process is chemical recovery technique relatively more conventional at present), as Pereira etc. utilizes the polyester of degraded to make tensio-active agent.

Summary of the invention

The object of this invention is to provide a kind of waterproof hot melt containing isoprene-isobutylene rubber.

The present invention adopts following technical scheme to achieve these goals:

A kind of waterproof hot melt containing isoprene-isobutylene rubber, it is characterized in that, it is obtained by the raw material of following weight parts: EVA45-50, modified tacky resin 30-40, isopropyl benzene hydroperoxide 2-3, decamethylene diamine 1-3, citric acid 0.5-0.9, stearic acid 0.5-1, Sodium dodecylbenzene sulfonate 1-2, dioctyl terephthalate 1-3, isoprene-isobutylene rubber 12-15, Dodecyl trimethyl ammonium chloride 1-2, attapulgite 10-20, kaolin 40-55, epoxy linseed oil 1-3;

Described modified tacky resin is obtained by the raw material of following weight parts:

Waste PET fragment 40-50, zinc acetate 3-4, thiorubber 10-15, chloroprene rubber 5-7, alkyl phenolic resin 20-30, styrene resin 5-10, trimethyloctadecyl ammonium chloride 1-2, carbide slag 10-20, gac 2-4;

The preparation method of described modified tacky resin is:

(1) by after carbide slag, gac mixing, ultraviolet irradiation 8-12h, then in concentration be 5-8% hydrochloric acid soln in soak 10-12h, solid-liquid separation is carried out to soak solution, dry, obtain the composite powder of modification for subsequent use;

(2) washing, dried waste PET fragment are joined in reactor in proportion, then add zinc acetate; Slowly be warming up to zinc acetate under nitrogen protection when dissolving completely, warming while stirring to 230-250 DEG C, insulation reaction 3-4h; Be cooled to 200-210 DEG C, then add thiorubber, chloroprene rubber, alkyl phenolic resin, styrene resin, stirring reaction 10-20min; Add the composite powder of modification and all the other raw materials again, after stirring 1-2h, discharging cooling stripping and slicing.

Described a kind of waterproof hot melt containing isoprene-isobutylene rubber, is characterized in that: preparation method comprises the following steps:

(1) attapulgite, appropriate amount of deionized water, Dodecyl trimethyl ammonium chloride mixing, fully disperse under 100-200 rev/min, dry after obtained compound size, then mix with isoprene-isobutylene rubber, and twin screw extruder is extruded, and cools the composite modified material of intercalation is for subsequent use;

(2) kneader is preheated to wall temperature 190-200 DEG C; Then add EVA, isopropyl benzene hydroperoxide by weight, decamethylene diamine, citric acid, mediate 10-20min; After add the composite modified material of intercalation and surplus stock by weight, at 180-190 DEG C, mediate 10-15min, take out cool and get final product.

Beneficial effect of the present invention:

(1) each stock dispersion of EVA hot-melt adhesive containing isoprene-isobutylene rubber of the present invention is good, maintains good watertightness and mechanical property.Through intercalation modifying, can improve the mechanical property of rubber, heat-drawn wire improves, and water-absorbent is low, use it to prepare consistency that hot melt adhesive can increase each raw material of hot melt adhesive, improves viscosity and water-repellancy.

(2) modified tacky resin batching rationally, the composite powder of modification wherein contains carbide slag, turn waste into wealth, can carbide slag sterilization be given by uv irradiation again, the hole of carbide slag, gac can be increased simultaneously, strengthen the avidity with resin, ageing-resistant, resistance to air loss is good, not only significantly improves the properties of hot melt adhesive with the composite powder of modification as the new raw material of hot melt adhesive, and has made new contribution for environmental protection.

(3) waste PET fragment by degraded after, then with all the other tackifying resins and the good melting of the composite powder of modification, obtained tackifying resin viscosity is high, and hardness strength performance satisfies the demands; Composite powder can be better dispersed in PET and remaining resin by modified, can increase the tensile strength of sizing material, hardness, nontoxic pollution-free; The present invention successfully by pet waste for the preparation of in hot melt adhesive, obtained hot melt adhesive can meet the sizing agent demand in each field, environmental protection, economy, useful environment.

Embodiment

A kind of waterproof hot melt containing isoprene-isobutylene rubber, it is obtained by the raw material of following weight (kg): EVA47, modified tacky resin 30, isopropyl benzene hydroperoxide 2, decamethylene diamine 1, citric acid 0.5, stearic acid 1, Sodium dodecylbenzene sulfonate 1, dioctyl terephthalate 1, isoprene-isobutylene rubber 15, Dodecyl trimethyl ammonium chloride 2, attapulgite 10, kaolin 55, epoxy linseed oil 1;

Described modified tacky resin is obtained by the raw material of following weight (kg):

Waste PET fragment 40, zinc acetate 3, thiorubber 10, chloroprene rubber 5, alkyl phenolic resin 30, styrene resin 10, trimethyloctadecyl ammonium chloride 1, carbide slag 15, gac 3;

The preparation method of described modified tacky resin is:

(1) by after carbide slag, gac mixing, ultraviolet irradiation 8h, then in concentration be 5% hydrochloric acid soln in soak 10h, solid-liquid separation is carried out to soak solution, dry, obtain the composite powder of modification for subsequent use;

Ultraviolet light source in uv irradiation adopts power 1000W, the high voltage mercury lamp fluorescent tube of spectral range 365-450nm, peak value 365nm;

(2) washing, dried waste PET fragment are joined in reactor in proportion, then add zinc acetate; Slowly be warming up to zinc acetate under nitrogen protection when dissolving completely, warming while stirring to 250 DEG C, insulation reaction 3h; Be cooled to 210 DEG C, then add thiorubber, chloroprene rubber, alkyl phenolic resin, styrene resin, stirring reaction 20min; Add the composite powder of modification and all the other raw materials again, after stirring 2h, discharging cooling stripping and slicing.

Described a kind of waterproof hot melt containing isoprene-isobutylene rubber, preparation method comprises the following steps:

(1) attapulgite, appropriate amount of deionized water, Dodecyl trimethyl ammonium chloride mixing, fully disperse under 200 revs/min, dry after obtained compound size, then mix with isoprene-isobutylene rubber, and twin screw extruder is extruded, and cools the composite modified material of intercalation is for subsequent use;

(2) kneader is preheated to wall temperature 190 DEG C; Then add EVA, isopropyl benzene hydroperoxide by weight, decamethylene diamine, citric acid, mediate 20min; After add the composite modified material of intercalation and surplus stock by weight, at 180 DEG C, mediate 15min, take out cool and get final product.

The apparent viscosity of the hot melt adhesive of the present embodiment is 5200MPa.s, stripping strength 52N/2.5cm, and initial bonding strength reaches No. 5 steel balls, open hour 42s, and within 24 hours, thermally-stabilised proterties is stablized.

Claims (2)

1. the waterproof hot melt containing isoprene-isobutylene rubber, it is characterized in that, it is obtained by the raw material of following weight parts: EVA45-50, modified tacky resin 30-40, isopropyl benzene hydroperoxide 2-3, decamethylene diamine 1-3, citric acid 0.5-0.9, stearic acid 0.5-1, Sodium dodecylbenzene sulfonate 1-2, dioctyl terephthalate 1-3, isoprene-isobutylene rubber 12-15, Dodecyl trimethyl ammonium chloride 1-2, attapulgite 10-20, kaolin 40-55, epoxy linseed oil 1-3;

Described modified tacky resin is obtained by the raw material of following weight parts:

Waste PET fragment 40-50, zinc acetate 3-4, thiorubber 10-15, chloroprene rubber 5-7, alkyl phenolic resin 20-30, styrene resin 5-10, trimethyloctadecyl ammonium chloride 1-2, carbide slag 10-20, gac 2-4;

The preparation method of described modified tacky resin is:

(1) by after carbide slag, gac mixing, ultraviolet irradiation 8-12h, then in concentration be 5-8% hydrochloric acid soln in soak 10-12h, solid-liquid separation is carried out to soak solution, dry, obtain the composite powder of modification for subsequent use;

(2) washing, dried waste PET fragment are joined in reactor in proportion, then add zinc acetate; Slowly be warming up to zinc acetate under nitrogen protection when dissolving completely, warming while stirring to 230-250 DEG C, insulation reaction 3-4h; Be cooled to 200-210 DEG C, then add thiorubber, chloroprene rubber, alkyl phenolic resin, styrene resin, stirring reaction 10-20min; Add the composite powder of modification and all the other raw materials again, after stirring 1-2h, discharging cooling stripping and slicing.

2. a kind of waterproof hot melt containing isoprene-isobutylene rubber according to claim 1, is characterized in that: preparation method comprises the following steps:

(1) attapulgite, appropriate amount of deionized water, Dodecyl trimethyl ammonium chloride mixing, fully disperse under 100-200 rev/min, dry after obtained compound size, then mix with isoprene-isobutylene rubber, and twin screw extruder is extruded, and cools the composite modified material of intercalation is for subsequent use;

(2) kneader is preheated to wall temperature 190-200 DEG C; Then add EVA, isopropyl benzene hydroperoxide by weight, decamethylene diamine, citric acid, mediate 10-20min; After add the composite modified material of intercalation and surplus stock by weight, at 180-190 DEG C, mediate 10-15min, take out cool and get final product.