CN104893547A - Bituminous coating with high film formation property and preparation method thereof - Google Patents

Abstract

The invention discloses a bituminous coating with a high film formation property. Firstly, a castor oil crosslinking prepolymer is adopted, wherein a multifunctional group structure of castor oil can endow a polymer with certain crosslinking, accordingly, the crosslinking degree of the polymer is improved, the interaction force of molecular chains is increased, movement of the molecular chains is blocked, water molecules cannot easily enter the molecular chains to swell the polymer, and the water absorption of the coating is reduced; meanwhile, the castor oil is triglycerin of fatty acid, nonpolar fatty acid chains of medium-long chains in molecules of the castor oil enable the coating to have excellent hydrophobicity, and the water absorption is further reduced; besides, ester in the castor oil has higher cohesive energy and can improve the tensile strength of the coating; ethyl cellulose has better heat resistance and thermoplasticity and has good compatibility with polyurethane, and the comprehensive performance of the prepolymer can be improved; the polyurethane prepolymer and polysilsesquioxane are subjected to blending modification.

Description

A kind of high film forming bituminous composition and preparation method thereof

Technical field

The present invention relates to a kind of coating, particularly relate to a kind of high film forming bituminous composition and preparation method thereof.

Background technology

Aqueous polyurethane emulsion has the advantages such as adjustable, the excellent sticking power of soft durometer and snappiness, be widely used in coating, tackiness agent and ink area, the synthesis mode of at present comparatively ripe anion aqueous polyurethane mainly by introducing hydrophilic radical and internal emulsification on polyurethane molecular segment, have certain water absorbability after film forming, film forming mechanical property, water tolerance, solvent resistance are poor.Usually cross-linking modified and the composite modified water tolerance and the mechanical property that improve glued membrane can be adopted;

In order to improve the performance such as mechanical property, water tolerance of urethane, reduce production cost simultaneously, the present invention replaces traditional petroleum chemicals polyvalent alcohol with Viscotrol C part, prepare a kind of New Emulsion, making its glue film performance obtain further improvement, is that a kind of renewable resources that utilizes is to prepare the effective ways of environment-friendly type high performance emulsion coatings.

Summary of the invention

The object of the invention just there is provided a kind of high film forming bituminous composition and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of high film forming bituminous composition, it is characterized in that this coating is that the component A of 1.7-2:1 and B component form by mass ratio, described component A is made up of the raw material of following weight parts:

Pitch 4-6, diglycollic amide 0.6-1, Pyranton 1-2, alcohol ester 12 film coalescence aid 4-5, ethyl cellulose 2-3, isophorone diisocyanate 50-67, polycarbonate diol 80-93, polysilsesquioxane 1.6-3, Diisopropyl azodicarboxylate 0.4-0.9, butanethiol tin 0.1-0.17, fluoroboric acid 0.1-0.13, Viscotrol C 10-16, BDO 1.3-2, stearyl methacrylate 2-3, sp-80 0.7-1, nano titanium oxide 2-3;

Described B component is made up of the raw material of following weight parts:

Thiosinamine 1-2, dimethythiotoluene diamine 3-4, epoxy Toenol 1140 3-4.5, vulcabond 2-3, aluminum isopropylate 0.4-0.6, silicon powder 3-4.

2, a preparation method for high film forming bituminous composition as claimed in claim 1, is characterized in that comprising the following steps:

Wherein the preparation method of component A comprises the following steps:

(1) sp-80 is joined in 10-20 times of water, under agitation condition, add Pyranton, obtain alcohol emulsion;

(2) above-mentioned asphalt heating is softened, mix with stearyl methacrylate, nano titanium oxide is added after stirring, drip above-mentioned alcohol emulsion under agitation condition, after dropwising, send in the oil bath of 120-130 DEG C, insulated and stirred 10-20 minute, discharging cools, and regulates PH to be neutral, obtains modified pitch emulsion;

(3) polycarbonate diol is heated to 100-120 DEG C, reduce pressure the 1-2h that dewaters;

(4) joined by Viscotrol C in the Virahol of 5-10 times of weight, add fluoroboric acid under agitation condition, insulated and stirred 1-2 hour at 60-65 DEG C, adds ammoniacal liquor, and regulator solution PH is 8-9, obtains ricinoleyl alcohol;

(5) by above-mentioned modified pitch emulsion, ricinoleyl alcohol mixing, send in the oil bath of 100-105 DEG C, under agitation condition, add ethyl cellulose, insulated and stirred 20-30 minute, discharging after cooling, adds diglycollic amide, stir, obtain fiber ricinoleyl alcohol dispersion liquid;

(6) above-mentioned fiber ricinoleyl alcohol dispersion liquid is joined in the polycarbonate diol after dehydration, add butanethiol tin, under agitation condition, add isophorone diisocyanate, pass into nitrogen, add BDO, at 85-90 DEG C, react 1-2 hour, obtain base polyurethane prepolymer for use as;

(7) joined by above-mentioned Diisopropyl azodicarboxylate in its weight 20-30 acetone doubly, stirring, is initiator solution;

(8) in above-mentioned base polyurethane prepolymer for use as, add polysilsesquioxane, drip above-mentioned initiator solution at 80-85 DEG C, dropwise rear ultrasonic disperse 10-20 minute, add each raw material of residue, dehydration, cooling discharging, revolves steaming and sloughs acetone, to obtain final product;

The preparation method of described B component comprises the following steps:

Epoxy Toenol 1140, vulcabond are mixed to join in reactor, insulated and stirred 10-15 minute at 80-86 DEG C, add aluminum isopropylate, be stirred to normal temperature, add thiosinamine, dimethythiotoluene diamine, stir, vacuumize the degassed 1-2 hour of dehydration, add each raw material of residue, stir, to obtain final product.

Using method:

First the dust of substrate surface, foreign material are cleaned out, basic unit must be smooth, solid and dry, A of the present invention, B component mixed according to weight ratio, stir, utilize spray gun spraying to arrive substrate surface.

Advantage of the present invention is:

First the present invention adopts Viscotrol C crosslinking prepolymers body:

Polyfunctional group structure in Viscotrol C can give polymkeric substance certain being cross-linked, improve the crosslinking degree of polymkeric substance, the interaction force between molecular chain is increased, and molecular chain movement is obstructed, water molecules is difficult to enter molecular chain chien shih polymers swell, therefore glued membrane water-intake rate declines;

Viscotrol C is the Witepsol W-S 55 of lipid acid simultaneously, and in its molecule, the nonpolar fatty acid chain of long-chain makes glued membrane have good hydrophobicity, also reduce further water-absorbent;

Ester group simultaneously in Viscotrol C has higher internal cohesive energy, can improve the tensile strength of glued membrane;

And ethyl cellulose has good thermotolerance, thermoplasticity, with urethane, there is good consistency, the over-all properties of performed polymer can be improved;

Then by base polyurethane prepolymer for use as and polysilsesquioxane blending and modifying:

Due to the nanoparticle that polysilsesquioxane is containing Si-O-Si skeleton structure, can the organism of polymeric inner be stoped in the release being oxidized volatile matter in Sum decomposition process further by structure, possess good thermostability and be easy to functionalized simultaneously, can be incorporated in organic matrix well and improve polymer performance, under oxidated condition, also can generate SiO2 be coated on surface, can make material oxygen barrier, heat insulation, cause flame retardant effect to increase.

Coating of the present invention can the low viscosity of guarantee system when constructing, and ensure that its workability is excellent, and after brushing is shaping, viscosity raises at once, stops sagging, good film-forming property, surface strength is high.

Embodiment

Below in conjunction with embodiment, the present invention is described in further detail:

Embodiment 1:

A kind of high film forming bituminous composition, it is characterized in that this coating is that the component A of 2:1 and B component form by mass ratio, described component A is made up of the raw material of following weight parts:

Pitch 4, diglycollic amide 0.6, Pyranton 1-2, alcohol ester 12 film coalescence aid 5, ethyl cellulose 2, isophorone diisocyanate 67, polycarbonate diol 93, polysilsesquioxane 1.6, Diisopropyl azodicarboxylate 0.4, butanethiol tin 0.17, fluoroboric acid 0.13, Viscotrol C 16, BDO 1.3, stearyl methacrylate 2-3, sp-80 0.7, nano titanium oxide 3;

Described B component is made up of the raw material of following weight parts:

Thiosinamine 2, dimethythiotoluene diamine 3, epoxy Toenol 1140 4.5, vulcabond 2-3, aluminum isopropylate 0.6, silicon powder 3.

A preparation method for high film forming bituminous composition, comprises the following steps:

Wherein the preparation method of component A comprises the following steps:

(1) sp-80 is joined in 20 times of water, under agitation condition, add Pyranton, obtain alcohol emulsion;

(2) above-mentioned asphalt heating is softened, mix with stearyl methacrylate, nano titanium oxide is added after stirring, drip above-mentioned alcohol emulsion under agitation condition, after dropwising, send in the oil bath of 130 DEG C, insulated and stirred 10-20 minute, discharging cools, and regulates PH to be neutral, obtains modified pitch emulsion;

(3) polycarbonate diol is heated to 120 DEG C, reduce pressure the 2h that dewaters;

(4) joined by Viscotrol C in the Virahol of 10 times of weight, add fluoroboric acid under agitation condition, at 65 DEG C, insulated and stirred 1 hour, adds ammoniacal liquor, and regulator solution PH is 9, obtains ricinoleyl alcohol;

(5) by above-mentioned modified pitch emulsion, ricinoleyl alcohol mixing, send in the oil bath of 105 DEG C, add ethyl cellulose under agitation condition, insulated and stirred 30 minutes, discharging after cooling, adds diglycollic amide, stirs, obtain fiber ricinoleyl alcohol dispersion liquid;

(6) above-mentioned fiber ricinoleyl alcohol dispersion liquid is joined in the polycarbonate diol after dehydration, add butanethiol tin, under agitation condition, add isophorone diisocyanate, pass into nitrogen, add BDO, react 2 hours at 90 DEG C, obtain base polyurethane prepolymer for use as;

(7) joined by above-mentioned Diisopropyl azodicarboxylate in its weight 20-30 acetone doubly, stirring, is initiator solution;

(8) in above-mentioned base polyurethane prepolymer for use as, add polysilsesquioxane, drip above-mentioned initiator solution at 85 DEG C, dropwise rear ultrasonic disperse 10 minutes, add each raw material of residue, dehydration, cooling discharging, revolves steaming and sloughs acetone, to obtain final product;

The preparation method of described B component comprises the following steps:

Epoxy Toenol 1140, vulcabond are mixed to join in reactor, insulated and stirred 15 minutes at 86 DEG C, add aluminum isopropylate, be stirred to normal temperature, add thiosinamine, dimethythiotoluene diamine, stir, vacuumize degassed 1 hour of dehydration, add each raw material of residue, stir, to obtain final product.

Performance test:

Tensile strength 6.3MPa;

Tear strength 22N/mm;

Elongation at break: 570%;

Watertightness: 0.3MPa, 30min: waterproof.

Claims (2)

1. a high film forming bituminous composition, it is characterized in that this coating is that the component A of 1.7-2:1 and B component form by mass ratio, described component A is made up of the raw material of following weight parts:

Pitch 4-6, diglycollic amide 0.6-1, Pyranton 1-2, alcohol ester 12 film coalescence aid 4-5, ethyl cellulose 2-3, isophorone diisocyanate 50-67, polycarbonate diol 80-93, polysilsesquioxane 1.6-3, Diisopropyl azodicarboxylate 0.4-0.9, butanethiol tin 0.1-0.17, fluoroboric acid 0.1-0.13, Viscotrol C 10-16, BDO 1.3-2, stearyl methacrylate 2-3, sp-80 0.7-1, nano titanium oxide 2-3;

Described B component is made up of the raw material of following weight parts:

Thiosinamine 1-2, dimethythiotoluene diamine 3-4, epoxy Toenol 1140 3-4.5, vulcabond 2-3, aluminum isopropylate 0.4-0.6, silicon powder 3-4.

2. a preparation method for high film forming bituminous composition as claimed in claim 1, is characterized in that comprising the following steps:

Wherein the preparation method of component A comprises the following steps:

(1) sp-80 is joined in 10-20 times of water, under agitation condition, add Pyranton, obtain alcohol emulsion;

(2) above-mentioned asphalt heating is softened, mix with stearyl methacrylate, nano titanium oxide is added after stirring, drip above-mentioned alcohol emulsion under agitation condition, after dropwising, send in the oil bath of 120-130 DEG C, insulated and stirred 10-20 minute, discharging cools, and regulates PH to be neutral, obtains modified pitch emulsion;

(3) polycarbonate diol is heated to 100-120 DEG C, reduce pressure the 1-2h that dewaters;

(4) joined by Viscotrol C in the Virahol of 5-10 times of weight, add fluoroboric acid under agitation condition, insulated and stirred 1-2 hour at 60-65 DEG C, adds ammoniacal liquor, and regulator solution PH is 8-9, obtains ricinoleyl alcohol;

(5) by above-mentioned modified pitch emulsion, ricinoleyl alcohol mixing, send in the oil bath of 100-105 DEG C, under agitation condition, add ethyl cellulose, insulated and stirred 20-30 minute, discharging after cooling, adds diglycollic amide, stir, obtain fiber ricinoleyl alcohol dispersion liquid;

(6) above-mentioned fiber ricinoleyl alcohol dispersion liquid is joined in the polycarbonate diol after dehydration, add butanethiol tin, under agitation condition, add isophorone diisocyanate, pass into nitrogen, add BDO, at 85-90 DEG C, react 1-2 hour, obtain base polyurethane prepolymer for use as;

(7) joined by above-mentioned Diisopropyl azodicarboxylate in its weight 20-30 acetone doubly, stirring, is initiator solution;

(8) in above-mentioned base polyurethane prepolymer for use as, add polysilsesquioxane, drip above-mentioned initiator solution at 80-85 DEG C, dropwise rear ultrasonic disperse 10-20 minute, add each raw material of residue, dehydration, cooling discharging, revolves steaming and sloughs acetone, to obtain final product;

The preparation method of described B component comprises the following steps:

Epoxy Toenol 1140, vulcabond are mixed to join in reactor, insulated and stirred 10-15 minute at 80-86 DEG C, add aluminum isopropylate, be stirred to normal temperature, add thiosinamine, dimethythiotoluene diamine, stir, vacuumize the degassed 1-2 hour of dehydration, add each raw material of residue, stir, to obtain final product.