A kind of sizing agent of wallpaperTechnical field
The present invention relates to pulp technology for making paper, be specifically related to the sizing agent of a kind of wallpaper.
Background technology
Sizing agent is a kind of additive for paper making, is broadly divided into plasm-glue-blending and top sizing, and on paper, applying glue can improve paperThe performances such as Zhang Kangshui, oil resistant, anti-printing-ink, can improve slickness, hydrophobicity, printing adaptability simultaneously.
Wallpaper, also referred to as wallpaper, be a kind of indoor hardware fitting for papering metope, be widely used in house, office,Hotel, the interior decoration etc. in hotel.Material is not limited to paper, also comprises other materials.Because having, color is various, pattern is richThe feature that other house decorative materials multiple such as style rich, luxurious, safety and environmental protection, easy construction, affordable are incomparable,Therefore obtain considerable degree of universal at the developed countries and regions such as American-European, Japanese.
Chinese patent CN 101068986 A discloses a kind of stable aqueous dispersions comprising reactive sizing agent, based on insteadAnswering property sizing agent 5-100 weight % has the substantially linear polymer with nitrogen of at least 3mmol/g basic nitrogen atom, and 1-50 weightThe paper gluing agents of the cationic starch of amount % substitution value at least 0.05.Sizing efficiency that this paper gluing agents has had and stable viscousDegree.
Chinese patent CN 101568687 A discloses the paper comprising reactive gluing agents and the polymer being dispersed in water and executesGlue paste composition, wherein said mixture can be by being obtained by mixing following component: the mean diameter of (a) discrete particles is less thanThe reactive gluing agents aqueous dispersion of 500nm, wherein this dispersion can by by least one reactive gluing agents at least one tableIt is emulsifiable in water in the presence of the activating agent of face and obtains, and (b) at least one emulsion polymer and/or reactive gluing agents is not hadAt least one water-soluble polymer of peptizaiton and/or aqueous dispersion polymers, and mixtures of paper gluing agents is at paper and paperPurposes in the engine sizing of product and top sizing.
The sizing agent kiss-coating amount of existing wallpaper is relatively low, limits the raising of wallpaper intensity.
Summary of the invention
It is an object of the invention to provide the sizing agent of a kind of wallpaper, this sizing agent can improve the intensity of wallpaper.
For achieving the above object, the present invention provides the sizing agent of a kind of wallpaper, described sizing agent to include 30-100 weightThe cationic starch of part, the alkenyl succinic anhydrides of 40-80 weight portion, the surfactant of 55-120 weight portion, 5-35 weightThe OPE of part, the Colophonium of 10-30 weight portion, the paraffin of 10-20 weight portion, the organic isocyanate of 2-15 weight portionDispersant with 2-7 weight portion.
Preferably, described sizing agent includes the alkenyl succinum of the cationic starch of 50-80 weight portion, 50-70 weight portionAnhydride, the surfactant of 70-100 weight portion, the oxidic polyethylene of 15-30 weight portion, the Colophonium of 15-20 weight portion, 12-18The paraffin of weight portion and the organic isocyanate of 5-10 weight portion.
Preferably, the substitution value of described cationic starch is 0.01-0.03, and pH value is 6-8, and water content is 21.3-32.5Weight %.
Preferably, the carbon atom number of described alkenyl succinic anhydrides alkenyl groups is 8-12.
Preferably, described alkenyl succinic anhydrides is decenyl succinic acid anhydride, dodecenyl succinic anhydride or octenylSuccinic anhydrides.
Preferably, described surfactant is alkyl quaternary ammonium salts, ethoxylized fatty alcohol, sodium lauryl sulfate, dodecaneBase sodium sulfate, sodium hexadecyl sulfate or Sodium docusate.
Preferably, the acid number of OPE is 10-15KOHmg/g.
Preferably, described organic isocyanate is Carbimide. dodecyl ester, Carbimide. stearyl, Carbimide. 14Arrcostab, Carbimide. cetyl ester, Carbimide. eicosyl ester or Carbimide. ester in the last of the ten Heavenly stems.
Preferably, described dispersant is LOMAR PWA EINECS 246-676-2 or lignosulphonic acid.
The inventive method has the advantage that
The sizing agent that the present invention provides can improve the degree of sizing of wallpaper, surface strength of paper, bursting strength and ring crush intensity,And ensure that higher kiss-coating amount simultaneously.
Detailed description of the invention
Detailed description below is merely to illustrate the present invention, but the present invention is not therefore subject to any restriction.
The present invention provide cationic starch that the sizing agent of a kind of wallpaper, described sizing agent include 30-100 weight portion,The alkenyl succinic anhydrides of 40-80 weight portion, the surfactant of 55-120 weight portion, the oxidic polyethylene of 5-35 weight portionWax, the Colophonium of 10-30 weight portion, the paraffin of 10-20 weight portion, the organic isocyanate of 2-15 weight portion and 2-7 weight portionDispersant；Preferably, described sizing agent includes the cationic starch of 50-80 weight portion, the alkenyl succinic of 50-70 weight portionAcid anhydride, the surfactant of 70-100 weight portion, the oxidic polyethylene of 15-30 weight portion, the Colophonium of 15-20 weight portion, 12-18 weightThe paraffin of amount part and the organic isocyanate of 5-10 weight portion.
Cationic starch can be Rhizoma Solani tuber osi, Semen Maydis, Semen Tritici aestivi, Radix Ipomoeae and tapioca, and amylopectin content can be 40-90%, the substitution value of cationic starch can be 0.01-0.03, and pH value can be 6-8, and water content can be 21.3-32.5Weight %, is modified it addition, cationic starch may also pass through the chemical reagent such as 3-dibutylamino-1,2 epoxy prapane.
Alkenyl succinic anhydrides hydrolysis rate and active half-life are the shortest, by means of emulsifying agent, and stabilizer, accelerator and helpingStay electric charge regulation and the bridging of agent, play condensation and flocculation, and make ASA show good retention on fiber, alkeneThe carbon atom number of base succinic anhydrides alkenyl groups can be 8-12, alkenyl succinic anhydrides be preferably decenyl succinic acid anhydride,Dodecenyl succinic anhydride or octenyl succinic acid anhydride.
Surfactant is used for stable dispersion cationic starch, can be alkyl quaternary ammonium salts, ethoxylized fatty alcohol, LaurelBase sodium sulfate, sodium lauryl sulphate, sodium hexadecyl sulfate or Sodium docusate.
OPE has the properties such as viscosity is low, softening point is high, hardness is good, avirulence, Heat stability is good, heightTemperature volatility is low, splendid to the dispersibility of sizing agent, and the most excellent existing external lubricity has again stronger internal lubrication effect,Also having coupled action, the acid number of OPE is preferably 10-15KOHmg/g.
Containing unsaturated bond in organic isocyanate structure, therefore there is high activity, easy and some band active groupsOrganic or inorganic thing reacts, and generates polyurethane elastomer, and such as, described organic isocyanate is Carbimide. dodecyl ester, differentCyanic acid stearyl, Carbimide. myristyl ester, Carbimide. cetyl ester, Carbimide. eicosyl ester or Carbimide. last of the ten Heavenly stemsEster.
The effect of dispersant is to improve further each component dispersion effect in water in sizing agent, and described dispersant canThink LOMAR PWA EINECS 246-676-2 or lignosulphonic acid.
Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
The method of testing of the embodiment of the present invention and comparative example is as follows:
Degree of sizing: use Cobb water absorbent surface gravimetric method, the quality absorbed water in paper unit are after comparing immersion, use g/m2Represent.Measure according to GB GB/T461.3-2005.
Surface strength of paper: the surface of the speed printing paper to increase continuously, until plucking occurs in surface, uses cm s-1TableShow.Measure according to GB GB/T2679.15-1997.
Bursting strength: refer to the maximum pressure uniformly increased that Paper or cardboard can bear in unit are, carry out table with kPaShow.Burst index=bursting strength/quantitatively.Measure according to GB GB/T454-1989.
Wallpaper glue applying method: the glue application solution prepared poured in ready pallet, then by the wallpaper sample of non-applying glueProduct immerse in glue application solution, take out, and put in page flash dryer, until it is completely dried up after 20s.
Ring crush intensity uses standard GB/T/T 2679.8-1995 to measure, and unit is N m/g.
Embodiment 1
Cationic starch solution (cationic starch: substitution value 0.01, pH 6, water content 24.6 by 600 gram of 5 weight %Weight %) it is warming up to 90 DEG C, under agitation it is sequentially added into 40 grams of octenyl succinic acid anhydrides, 70 grams of sodium lauryl sulfates, 9 grams of oxidations poly-Ethylene waxes (acid number is 12KOHmg/g), 10 grams of Colophonium, 10 grams of paraffin, 2 grams of Carbimide. dodecyl esters, 2 grams of LOMAR PWA EINECS 246-676-2, thenAdding water makes the solid content of solution be 5 weight %, and under high pressure homogenize blender, (100 MPas, 80 DEG C) carry out homogenizing to stir 1 littleTime, it is then cooled to room temperature, obtains sizing agent S1.Sizing agent S1 is used for wallpaper applying glue, and specific experiment the results are shown in Table 1.
Embodiment 2
Cationic starch solution (cationic starch: substitution value 0.03, pH7, water content 30.1 by 600 gram of 15 weight %Weight %) it is warming up to 90 DEG C, under agitation it is sequentially added into 60 grams of decenyl succinic acid anhydride, 90 grams of sodium hexadecyl sulfates, 30 grams of oxygenChange Tissuemat E (acid number is 10KOHmg/g), 30 grams of Colophonium, 20 grams of paraffin, 15 grams of Carbimide. stearyl, 7 grams of lignin sulphursAcid, is subsequently adding water and makes the solid content of solution be 9 weight %, and under high pressure homogenize blender, (100 MPas, 80 DEG C) carry out homogenizing and stirMix 1 hour, be then cooled to room temperature, obtain sizing agent S2.Sizing agent S2 is used for wallpaper applying glue, and specific experiment the results are shown in Table 1.
Embodiment 3
Cationic starch solution (cationic starch: substitution value 0.02, pH8, water content 29.6 by 600 gram of 10 weight %Weight %) it is warming up to 90 DEG C, under agitation it is sequentially added into 80 grams of dodecenyl succinic anhydride, 50 grams of dioctylsulfosuccinatSodium, 15 grams of OPEs (acid number is 15KOHmg/g), 15 grams of Colophonium, 12 grams of paraffin, 12 grams of Carbimide. cetyl esters, 3Gram lignosulphonic acid, is subsequently adding water and makes the solid content of solution be 14 weight %, under high pressure homogenize blender (100 MPas, 80 DEG C)Carry out homogenizing to stir 1 hour, be then cooled to room temperature, obtain sizing agent S3.Sizing agent S3 is used for wallpaper applying glue, specific experimentThe results are shown in Table 1.
Comparative example 1
Comparative example 1 is substantially the same manner as Example 1, and difference is, the substitution value adding cationic starch is 0.1, and pH 6 containsThe water yield 26.2 weight %, obtains sizing agent D1.Sizing agent D1 is used for wallpaper applying glue, and specific experiment the results are shown in Table 1.
Comparative example 2
Comparative example 2 is substantially the same manner as Example 1, and difference is, is added without octenyl succinic acid anhydride, obtains sizing agent D2.Sizing agent D2 is used for wallpaper applying glue, and specific experiment the results are shown in Table 1.
Comparative example 3
Comparative example 3 is substantially the same manner as Example 1, and difference is, the acid number of OPE is 7, obtains sizing agent D3.Sizing agent D3 is used for wallpaper applying glue, and specific experiment the results are shown in Table 1.
Comparative example 4
Comparative example 4 is substantially the same manner as Example 1, and difference is, the acid number of OPE is 20, obtains sizing agentD4.Sizing agent D4 is used for wallpaper applying glue, and specific experiment the results are shown in Table 1.
From the results shown in Table 1, it is strong that the sizing agent that the present invention provides can improve the degree of sizing of wallpaper, paper surfaceDegree, bursting strength and ring crush intensity, and ensure that higher kiss-coating amount simultaneously.
Table 1