CN103102827A - Starch binder - Google Patents

Abstract

The invention discloses a starch binder consisting of the following raw materials: lignosulfonate, styrene, nano diatomite, epoxidized soybean oil, acrylic ester, acrylic acid, sodium persulfate, sodium allyloxy hydroxypropyl sulphonate, starch, sodium hydroxide, borax, modified wood ash, and water; as well as water-soluble nanoscale silica sol, ammonium polyacrylate, polyethylene glycol, zinc powder, waterborne polyurethane, sodium laurate, sodium bicarbonate and water. The starch binder is stable in quality, strong in binding power, good in tensile force, fast to dry without foaming, and capable of comprehensively improving all properties of a corrugated carton; as the modified wood ash is added, the damage of water molecules to the binder is effectively decreased, and the water resisting property of the binder is greatly increased; and as the hydrophilic performance of the binder is decreased, the binder has a good characteristic of being fast to dry, thereby being beneficial to use on a high-speed production line of the corrugated carton.

Description

A kind of Starch pre-expandity

Technical field

The present invention relates generally to a kind of composite caking agent, relates in particular to a kind of Starch pre-expandity.

Background technology

At present, in watt line production, the tackiness agent of corrugated cardboard mainly uses the amylan tackiness agent, we know, the stripping strength standard of existing Starch Adhesive is 5.88n/m2, its production technique is single stage method glue and two step method glue, glue is divided into again cold glue and two kinds of methods of hot glue, facts have proved, adopts the hot adhesive-preparing technology binder performance more made than cold adhesive-preparing technology good.But, existing tackiness agent can not be stablized, glue kinematic viscosity descends very fast, shorter general about 24 hours of shelf-time just began to go bad, body paper is to be made of multiple fiber molecule, starch adhesive is penetrated into fiber and forms the glue nail of root top shape from the surperficial pore of paper, follows closely effectively by glue between lining paper and stupefied peak to be bonded together.The high-strength corrugated board papery is better, and tightness is high, and the top sizing pore is blocked, and general glue perviousness is relatively poor, easily occurs false stickingly, bubbles, the quality problems such as come unstuck.Address this problem, must guarantee glue stability, will be accurate through the poor starch thickener of the viscosity high workability of overcuring, in right amount, spread upon equably on the corrugation crest line, satisfy this processing requirement of high-strength corrugated board bonding mechanism, must manufacture the glue performance aspect and be resolved.Dry slow, come unstuck distortion, moisture absorption.

Summary of the invention

The object of the invention is exactly for a kind of Starch pre-expandity is provided.

The present invention is achieved by the following technical solutions:

A kind of Starch pre-expandity is characterized in that it is comprised of A, B, three kinds of material of C:

Described A material is comprised of the raw material of following weight parts: sulfonated lignin 1-2, vinylbenzene, nano diatomite 1-2, epoxy soybean oil 1-2, acrylate 1-2, vinylformic acid 4-6, Sodium Persulfate 1-2, allyloxy hydroxypropyl azochlorosulfonate acid sodium 1-2;

Described B material is comprised of the raw material of following weight parts: starch 18-20, sodium hydroxide 1-2, borax 0.6-0.8, modification trees ash 1-2, water 28-30;

The preparation method of described modification trees ash is:

(1) the trees ash is used 10-15% hydrogen peroxide dipping 3-4 hour, deionized water wash, then soaked 3-4 hour with the 10-12% sodium hydroxide solution, more extremely neutral with deionized water wash, oven dry;

(2) in the trees ash, add the sodium laurylsulfate, the nano-sized carbon of 1-2%, the polyisobutene of 2-3%, the 3-5% alum powder that are equivalent to its weight 2-3%, high speed 1200-1500 rev/min of stirring, ovendry power is broken into ultrafine powder;

Described C material is comprised of the raw material of following weight parts: water-soluble nano grade silica sol 1-2, Polyacrylamide 1-2, polyoxyethylene glycol 1-2, zinc powder 0.8-1, aqueous polyurethane 1-2, sodium laurate 1-2, sodium bicarbonate 1-2, water 120-130;

The preparation method of described Starch pre-expandity is:

(1) take the A material, first vinylbenzene is put into reactor, be heated to 70-75 ℃, then add other material, stir, then be warming up to 110-125 ℃, reacted discharging 2-3 hour;

(2) take B material, heat water to 80-90 ℃, sodium hydroxide, borax is soluble in water, mixing, then add starch, and stir, reacted 30-45 minute;

(3) take C material, heat water to 90-100 ℃, other material and A, B reacting rear material are added to the water successively, the limit edged stirs, 90-100 ℃ of lower insulated and stirred reaction 1-2 hour, and before reaction finished, accent PH was 6.8-7.2, discharging and get final product.

Advantage of the present invention is:

Formulating of recipe of the present invention is reasonable, and raw material is easy to get, and production technique is simple, coordinative composition of equipments is easy, constant product quality, cohesive force is strong, very power is good, quick-drying is non-foaming, comprehensively improves the various performances of Corrugated Box, add modification trees ash, effectively reduce water molecules to the destruction of binding agent, make the water resisting property of binding agent improve a lot, due to the hydrophilicity decline of glue, make its characteristic with good quick-drying, thereby be conducive to using on watt line at a high speed.

Embodiment

Embodiment 1

A kind of Starch pre-expandity is characterized in that it is comprised of A, B, three kinds of material of C:

Described A material is comprised of the raw material of following weight parts: sulfonated lignin 2, vinylbenzene 6, nano diatomite 2, epoxy soybean oil 2, acrylate 2, vinylformic acid 4-6, Sodium Persulfate 2, allyloxy hydroxypropyl azochlorosulfonate acid sodium 2;

Described B material is comprised of the raw material of following weight parts: starch 20, sodium hydroxide 2, borax 0.8, modification trees ash 2, water 30;

The preparation method of described modification trees ash is:

(1) trees ashes is with 15% hydrogen peroxide dipping 4 hours, deionized water wash, then soaked 4 hours with 12% sodium hydroxide solution, then with deionized water wash to neutrality, dry;

(2) in the trees ash, add the sodium laurylsulfate that is equivalent to its weight 2%, 2% nano-sized carbon, 3% polyisobutene, 5% alum powder, 1500 rev/mins of stirrings at a high speed, ovendry power is broken into ultrafine powder;

Described C material is comprised of the raw material of following weight parts: water-soluble nano grade silica sol 2, Polyacrylamide 2, polyoxyethylene glycol 2, zinc powder 1, aqueous polyurethane 2, sodium laurate 2, sodium bicarbonate 2, water 130;

The preparation method of described Starch pre-expandity is:

(1) take the A material, first vinylbenzene is put into reactor, be heated to 75 ℃, then add other material, stir, then be warming up to 125 ℃, reacted discharging 3 hours;

(2) take B material, heat water to 90 ℃, sodium hydroxide, borax is soluble in water, mixing, then add starch, and stir, reacted 45 minutes;

(3) take C material, heat water to 100 ℃, other material and A, B reacting rear material are added to the water successively, the limit edged stirs, 100 ℃ of lower insulated and stirred reactions 2 hours, and before reaction finished, transferring PH was 7.2, discharging and get final product.

Performance test:

The present invention's formula is through testing throughout the year, and its bond strength reaches 7.61n/cm ², the physicalies such as side pressure strength surpass common adhesive 20-30% left and right, can deposit summer and autumn and never degenerate in 7 days, can deposit winter in spring and never degenerate in 14 days.The glue consumption: every layer of starch is 3.5g/m ²Can solve the lightweight paper plate and reveal the chop line problems such as trace, and can solve cardboard and come unstuck, bubble, false sticking, the quality problems such as prying are saved cost 30% left and right because the glue consumption reduces.

Atmospheric moisture was guaranteed the quality 60 days greater than in 90% situation, and carton ducks in drink, do not come unstuck in 48 hours, and after the carton drying, good bonding, mass conservation.

Claims (1)

1. Starch pre-expandity is characterized in that it is comprised of A, B, three kinds of material of C:

Described A material is comprised of the raw material of following weight parts: sulfonated lignin 1-2, vinylbenzene 3-5, nano diatomite 1-2, epoxy soybean oil 1-2, acrylate 1-2, vinylformic acid 4-6, Sodium Persulfate 1-2, allyloxy hydroxypropyl azochlorosulfonate acid sodium 1-2;

Described B material is comprised of the raw material of following weight parts: starch 18-20, sodium hydroxide 1-2, borax 0.6-0.8, modification trees ash 1-2, water 28-30;

The preparation method of described modification trees ash is:

(1) the trees ash is used 10-15% hydrogen peroxide dipping 3-4 hour, deionized water wash, then soaked 3-4 hour with the 10-12% sodium hydroxide solution, more extremely neutral with deionized water wash, oven dry;

(2) in the trees ash, add the sodium laurylsulfate, the nano-sized carbon of 1-2%, the polyisobutene of 2-3%, the 3-5% alum powder that are equivalent to its weight 2-3%, high speed 1200-1500 rev/min of stirring, ovendry power is broken into ultrafine powder;

Described C material is comprised of the raw material of following weight parts: water-soluble nano grade silica sol 1-2, Polyacrylamide 1-2, polyoxyethylene glycol 1-2, zinc powder 0.8-1, aqueous polyurethane 1-2, sodium laurate 1-2, sodium bicarbonate 1-2, water 120-130;

The preparation method of described Starch pre-expandity is:

(1) take the A material, first vinylbenzene is put into reactor, be heated to 70-75 ℃, then add other material, stir, then be warming up to 110-125 ℃, reacted discharging 2-3 hour;

(2) take B material, heat water to 80-90 ℃, sodium hydroxide, borax is soluble in water, mixing, then add starch, and stir, reacted 30-45 minute;

(3) take C material, heat water to 90-100 ℃, other material and A, B reacting rear material are added to the water successively, the limit edged stirs, 90-100 ℃ of lower insulated and stirred reaction 1-2 hour, and before reaction finished, accent PH was 6.8-7.2, discharging and get final product.