CN115262256A - Micromolecular fiber penetrating softener and preparation method thereof - Google Patents
Micromolecular fiber penetrating softener and preparation method thereof Download PDFInfo
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- CN115262256A CN115262256A CN202210985759.4A CN202210985759A CN115262256A CN 115262256 A CN115262256 A CN 115262256A CN 202210985759 A CN202210985759 A CN 202210985759A CN 115262256 A CN115262256 A CN 115262256A
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- 239000000835 fiber Substances 0.000 title claims abstract description 46
- 230000000149 penetrating effect Effects 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 72
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 54
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 150000003384 small molecules Chemical class 0.000 claims abstract description 43
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 41
- 239000008103 glucose Substances 0.000 claims abstract description 41
- 239000008367 deionised water Substances 0.000 claims abstract description 39
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 39
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 36
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims abstract description 28
- FWVCSXWHVOOTFJ-UHFFFAOYSA-N 1-(2-chloroethylsulfanyl)-2-[2-(2-chloroethylsulfanyl)ethoxy]ethane Chemical compound ClCCSCCOCCSCCCl FWVCSXWHVOOTFJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 5
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 5
- 239000003607 modifier Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 70
- 230000035515 penetration Effects 0.000 claims description 43
- 238000002156 mixing Methods 0.000 claims description 39
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 24
- 238000010992 reflux Methods 0.000 claims description 22
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000003204 osmotic effect Effects 0.000 claims description 3
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 24
- 239000003814 drug Substances 0.000 abstract description 16
- 239000007788 liquid Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 14
- 238000004537 pulping Methods 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 12
- 239000003513 alkali Substances 0.000 abstract description 10
- 239000004094 surface-active agent Substances 0.000 abstract description 7
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 abstract description 5
- -1 alcohol acetal Chemical class 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 238000005470 impregnation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 239000002023 wood Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 238000013329 compounding Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000000706 filtrate Substances 0.000 description 6
- 244000166124 Eucalyptus globulus Species 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 238000010297 mechanical methods and process Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 230000004584 weight gain Effects 0.000 description 3
- 235000019786 weight gain Nutrition 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 150000001241 acetals Chemical class 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/10—Physical methods for facilitating impregnation
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a micromolecular fiber penetrating softener and a preparation method thereof, belonging to the technical field of chemical mechanical pulping. The micromolecular fiber permeation softener comprises the following components in percentage by weight: sugar: 20-30%, alcohol: 5-15%, acid: 0.1-0.5%, alkali: 0.5-1%, modifier: 5-10% and auxiliary agent: 5-10% and the balance of deionized water; glucose with high-activity hemiacetal hydroxyl in a molecule is used as a raw material and reacts with monohydric short-chain alcohol acetal under the catalytic action of sulfuric acid to prepare a small-molecule surfactant, sodium carbonate is used as an alkali source to be adjusted to be in a weakly alkaline environment, and then the small-molecule surfactant is compounded with N-methylmorpholine oxide and a rapid penetrating agent T to achieve the effect of synergistically reducing the surface tension of the impregnation liquid medicine, the small-molecule acetal product can bring the liquid medicine into fibers to achieve the effect of softening the fibers, the using amount of the chemical liquid medicine can be reduced, and the small-molecule surfactant has the significance of saving energy and reducing consumption.
Description
Technical Field
The invention belongs to the technical field of chemical mechanical pulping, and particularly relates to a micromolecule fiber penetration softener and a preparation method thereof.
Background
The pulp manufacturing process is to dissociate the fibers in the fiber raw materials by a chemical method or a mechanical method and a method combining the chemical method and the mechanical method, and then to purify or refine the dissociated fibers into unbleached pulp or bleached pulp, which can be divided into a mechanical method, a chemical method and a chemical-mechanical method according to the pulping method; wherein, the mechanical pulping has larger energy consumption, especially the energy consumption in the pulping process is huge, which accounts for about 30 percent of the whole pulping energy consumption; the chemical pulping method can not utilize branch raw materials, is not suitable for or less used raw materials such as broad-leaved wood, straw, bamboo and the like, and greatly limits the sources of the raw materials; therefore, in the prior art, the chemical mechanical method is mostly adopted to prepare high-yield pulp.
Chemi-mechanical pulp is the name given to an intermediate product pulp in the paper manufacturing process, which is a complex process consisting of multiple processes. The raw materials for manufacturing paper are various fiber raw materials, the fiber raw materials are firstly cut up and cooked to be made into paper pulp, and different pulping processes are provided due to different compositions and chemical components of the fiber materials; at present, a surfactant is mostly adopted as a penetrant, so that the liquid phase is improved to obtain surface tension, the fluidity is increased, the penetration speed is accelerated, the liquid medicine quickly enters the raw materials, the side of the liquid medicine is close to the softening of wood chip fibers, and the yield and the efficiency of paper pulp fibers are improved. In the prior art, various surfactants are adopted, such as sodium alkylsulfonates, polyoxyethylene alkyl ethers and the like, the single penetrant is large in dosage and large in environmental pollution load, and further improvement is needed.
Disclosure of Invention
In order to solve the technical problems mentioned in the background art, the invention aims to provide a small-molecule fiber penetration softener and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a small molecule fiber penetration softener comprising, in weight percent: sugar: 20-30%, alcohol: 5-15%, acid: 0.1-0.5%, alkali: 0.5-1%, modifier: 5-10% and auxiliary agent: 5-10% and the balance of deionized water.
Preferably, the sugar is selected from glucose, which contains high-activity hemiacetal hydroxyl group in the molecule and is easy to react and modify, and the glucose has small molecules and is easy to permeate into the pulp fiber.
Preferably, the alcohol is selected from one or two of ethanol and n-butanol which are mixed in any proportion, and the monohydric short-chain alcohol is easy to react with glucose, wide in source and low in cost.
Preferably, the acid is selected from sulfuric acid, which catalyzes the formation of the hemiacetal hydroxyl group from glucose and catalyzes the further reaction of the hemiacetal hydroxyl group with an alcohol.
Preferably, the base is selected from sodium carbonate, which has high solubility, low cost, and easy post-treatment.
Preferably, the modifier is selected from N-methylmorpholine oxide which is non-toxic and easily soluble in water and has strong solubility to the fiber, and the addition of a certain amount of N-methylmorpholine oxide can achieve the effect of softening the fiber and enable the liquid medicine to rapidly enter the fiber.
Preferably, the auxiliary agent is selected from a rapid penetration agent T which is an anionic surfactant and can achieve the effect of rapid penetration and softening in cooperation with the N-methylmorpholine oxide.
According to the above technical solution statement, the preparation method of the penetrating softener is determined as follows:
step S1: adding glucose and ethanol/n-butanol into a reaction kettle for mixing, adding deionized water for stirring until the glucose is completely dissolved, adding sulfuric acid for mixing under the stirring state, controlling the stirring speed to be 180-360rpm, heating to 82-130 ℃, carrying out reflux reaction for 2-3h, wherein the ethanol/n-butanol is monohydric straight-chain alcohol, and hydroxyl at the end part is dehydrated with hemiacetal hydroxyl on glucose molecules under the catalytic action of sulfuric acid to form acetal derivatives to prepare small molecular active mixed liquid;
step S2: adding the rest deionized water and sodium carbonate into the small molecular active mixed solution, stirring for dissolving, adjusting the mixed solution to be in alkalescent environment, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing to prepare the penetrating softener.
The invention has the beneficial effects that:
1. the invention takes glucose containing high-activity hemiacetal hydroxyl in molecules as a raw material, the glucose reacts with monohydric short-chain alcohol acetal under the catalysis of sulfuric acid to prepare a micromolecular surfactant, sodium carbonate is taken as an alkali source to be adjusted to be in an alkalescent environment, and then the micromolecular surfactant is compounded with N-methylmorpholine oxide and a quick penetrating agent T to achieve the effect of synergistically reducing the surface tension of the impregnating liquid medicine, the liquid medicine can be brought into fibers by the acetal product of micromolecule to achieve the effect of softening the fibers, through test tests, in the same presoaking test, the weight gain is 36.54-38.85% by adopting the invention as a penetration softener, the alkali content in filtrate is 0.91-1.01g/L, the penetration softener can accelerate the liquid medicine to penetrate into wood chips, so that the weight of presoaked wood chips is increased, the amount of caustic soda is large along with the penetration softener, so that the wood chips are softened, the alkali content of the filtrate is reduced, and the invention can fully explain that the liquid medicine can quickly and uniformly penetrate into the fiber raw material, and is favorable for softening the fiber raw material and better for subsequent filament separation and pulping.
2. The penetration softener prepared by the method is applied to the chemical pretreatment dipping stage of the chemimechanical pulp, can accelerate the liquid medicine to enter the fiber, promotes the fiber to be softened, can reduce the using amount of the chemical liquid medicine, and has the significance of saving energy and reducing consumption.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
In this example, a small molecule fiber penetrating softener is prepared, and the specific implementation process is as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 20kg;
ethanol: 5kg;
sulfuric acid: 0.1kg;
sodium carbonate: 0.5kg;
n-methylmorpholine oxide: 5kg;
rapid penetrant T:5kg;
deionized water: 64.4kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to be 180rpm, heating to 82 ℃, and carrying out reflux reaction for 3h to prepare a small-molecule active mixed solution;
3) Compounding
And adding the rest deionized water and sodium carbonate into the micromolecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetration softener.
Example 2
In this example, a small molecule fiber penetration softener was prepared, which was carried out in the same manner as in example 1, and specifically performed as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 20kg;
n-butanol: 8.2kg;
sulfuric acid: 0.2kg;
sodium carbonate: 0.7kg;
n-methylmorpholine oxide: 5kg;
rapid penetrant T:5kg;
deionized water: 60.9kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to be 180rpm, heating to 130 ℃, and carrying out reflux reaction for 3h to prepare a small-molecule active mixed solution;
3) Compounding
Adding the rest deionized water and sodium carbonate into the small molecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetrating softener.
Example 3
In this example, a small molecule fiber penetration softener was prepared, which was carried out in the same manner as in example 1, and specifically performed as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 23kg;
ethanol: 8kg;
sulfuric acid: 0.25kg;
sodium carbonate: 0.3kg;
n-methylmorpholine oxide: 6kg;
rapid penetrant T:9kg;
deionized water: 53.45kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to be 240rpm, heating to 85 ℃, and carrying out reflux reaction for 3h to prepare a small-molecule active mixed solution;
3) Compounding
And adding the rest deionized water and sodium carbonate into the micromolecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetration softener.
Example 4 this example prepared a small molecule fiber penetrating softener, which was the same as example 1, with the following specific operations:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 23kg;
n-butanol: 13.2;
sulfuric acid: 0.3kg;
sodium carbonate: 0.35kg;
n-methylmorpholine oxide: 8kg;
rapid penetrant T:7kg;
deionized water: 48.15kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to 360rpm, heating to 130 ℃, and carrying out reflux reaction for 2h to prepare a small-molecule active mixed solution;
3) Compounding
And adding the rest deionized water and sodium carbonate into the micromolecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetration softener.
Example 5
In this example, a small molecule fiber penetration softener was prepared, which was carried out in the same manner as in example 1, and specifically performed as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 26kg;
ethanol: 10kg;
sulfuric acid: 0.35kg;
sodium carbonate: 0.4kg;
n-methylmorpholine oxide: 5kg;
rapid penetrant T:10kg;
deionized water: 48.25kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to be 240rpm, heating to 85 ℃, and carrying out reflux reaction for 2.2h to prepare a small-molecule active mixed solution;
3) Compounding
And adding the rest deionized water and sodium carbonate into the micromolecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetration softener.
Example 6
In this example, a small molecule fiber penetration softener was prepared, which was carried out in the same manner as in example 1, and specifically performed as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 26kg;
n-butanol: 13kg;
sulfuric acid: 0.38kg;
sodium carbonate: 0.4kg;
n-methylmorpholine oxide: 7kg;
rapid penetrant T:7kg;
deionized water: 46.22kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to 240rpm, heating to 130 ℃, and carrying out reflux reaction for 2.5h to prepare a small-molecule active mixed solution;
3) Compounding
And adding the rest deionized water and sodium carbonate into the micromolecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetration softener.
Example 7
In this example, a small molecule fiber penetrating softener was prepared, and the specific implementation process is the same as that in example 1, and the specific operation is as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 28kg;
ethanol: 12kg;
sulfuric acid: 0.4kg;
sodium carbonate: 0.5kg;
n-methylmorpholine oxide: 8kg;
rapid penetrant T:6kg;
deionized water: 45.10kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to 300rpm, heating to 87 ℃, and carrying out reflux reaction for 2.5h to prepare a small-molecule active mixed solution;
3) Compounding
Adding the rest deionized water and sodium carbonate into the small molecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetrating softener.
Example 8
In this example, a small molecule fiber penetration softener was prepared, which was carried out in the same manner as in example 1, and specifically performed as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 28kg;
n-butanol: 15kg;
sulfuric acid: 0.4kg;
sodium carbonate: 0.5kg;
n-methylmorpholine oxide: 8kg;
rapid penetrant T:6kg;
deionized water: 42.10kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to 360rpm, heating to 130 ℃, and carrying out reflux reaction for 3h to prepare a small-molecule active mixed solution;
3) Compounding
And adding the rest deionized water and sodium carbonate into the micromolecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetration softener.
Example 9
In this example, a small molecule fiber penetration softener was prepared, which was carried out in the same manner as in example 1, and specifically performed as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 30kg;
mixing ethanol and n-butanol according to a weight ratio of 1: 11kg;
sulfuric acid: 0.5kg;
sodium carbonate: 1kg;
n-methylmorpholine oxide: 10kg;
rapid penetrant T:10kg;
deionized water: 37.5.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser (with a circulating water jacket), stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, adding sulfuric acid and mixing for 5min under a stirring state, setting the stirring speed to be 240rpm, heating to 110 ℃, and carrying out reflux reaction for 2.5h to prepare a micromolecule active mixed solution;
3) Compound formulation
And adding the rest deionized water and sodium carbonate into the micromolecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetration softener.
Example 10
In this example, a small molecule fiber penetration softener was prepared, which was carried out in the same manner as in example 1, and specifically performed as follows:
1) Preparing materials: taking the following raw materials according to the ration of 100kg
Glucose: 30kg;
mixing ethanol and n-butanol according to a mass ratio of 1: 15kg;
sulfuric acid: 0.5kg;
sodium carbonate: 1kg;
n-methylmorpholine oxide: 10kg;
rapid penetrant T:10kg;
deionized water: 33.5kg.
2) Preparation of Small molecule actives
Adding glucose and ethanol into a reaction kettle provided with a stirrer and a reflux condenser, stirring and mixing, slowly adding deionized water, stirring until the glucose is completely dissolved, keeping the stirring state, adding sulfuric acid, mixing for 5min, setting the stirring speed to 360rpm, heating to 125 ℃, and carrying out reflux reaction for 2h to prepare a small-molecule active mixed solution;
3) Compounding
Adding the rest deionized water and sodium carbonate into the small molecular active mixed solution, stirring until the sodium carbonate is completely dissolved, adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing for 30min, and preparing the penetrating softener.
The penetration softener prepared in example 1-example 10 was used for a pre-dip test on eucalyptus wood pieces, and two sets of control tests were set, respectively:
comparative example 1
Deionized water is used as a blank control to verify the permeation effect of the invention.
Comparative example 2
The effect of the present invention and the existing osmotic softener was verified by comparing the osmotic softener MLp-c.
The specific test method is as follows:
the first step is as follows: selecting the eucalyptus pieces as test objects from a chemical mechanical pulp workshop, selecting uniform and consistent eucalyptus pieces, cleaning the eucalyptus pieces with clear water, balancing for 24 hours, and detecting water for later use;
the second step is that: weighing 12 parts of oven-dried wood chips according to 100g equivalent weight, placing the weighed materials in a 1L beaker, adding 800mL of water, respectively adding 1kg/t of the penetration softener prepared in the examples 1-10, the deionized water provided by the comparative example 1 and the existing penetration softener MLp-c provided by the comparative example 2, adding 30kg/t of caustic soda, mixing, and placing the mixture in a 90 ℃ water bath for treatment for 30min;
the third step: filtering the wood chips pre-soaked by a 40-mesh screen to be dry, filtering the water on the surface, and measuring the weight of the wood chips;
the fourth step: taking the filtrate to detect the alkali content.
Specific test data are shown in table 1:
TABLE 1
As can be seen from the data in Table 1, when the penetration softener prepared by the invention is applied to the pulping process of eucalyptus pieces, the weight gain rate is 36.54-38.85%, the alkali content in the filtrate is 0.91-1.01g/L, the weight gain rate of the wood pieces is higher than that of the comparative example 1 and the comparative example 2, and the alkali content in the filtrate is lower than that of the comparative example 1 and the comparative example 2, so that the penetration softener can accelerate the penetration of the liquid medicine into the wood pieces, the weight of the presoaked wood pieces is increased, the amount of caustic soda penetrating into the wood pieces along with the penetration softener is large, the wood pieces are softened, the alkali content of the filtrate is reduced, and the penetration softener can sufficiently accelerate the liquid medicine to penetrate into the interior of the fiber raw materials rapidly and uniformly, the fiber raw materials are softened, and the subsequent filament separation and pulping are better facilitated.
In order to verify the effect of the penetration softener prepared by the invention on pulping, the existing mature alkaline hydrogen peroxide chemico-mechanical pulping process is adopted for testing, the penetration softener provided by the embodiment 8 is taken as an experimental group, the penetration softener provided by the comparative example 2 is taken as a control group, and the specific medicine proportion and the test data are shown in the table 2:
TABLE 2
As can be seen from the data in Table 2, the penetration softener prepared by the invention has obvious beneficial effects and economic benefits when used for impregnating paper pulp, and can obtain effects similar to those of the existing penetration softener under the condition of properly using lower dosage of liquid medicine, and particularly has the effects of saving energy and reducing consumption.
In the description of the specification, reference to the description of "one embodiment," "an example," "a specific example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only, and it will be appreciated by those skilled in the art that various modifications, additions and substitutions can be made to the embodiments described without departing from the scope of the invention as defined in the appended claims.
Claims (8)
1. A small molecule fiber penetration softener, which is characterized by comprising the following components in percentage by weight: sugar: 20-30%, alcohol: 5-15%, acid: 0.1-0.5%, base: 0.5-1%, modifier: 5-10% and auxiliary agent: 5-10% and the balance of deionized water.
2. The small molecule osmotic fiber softener of claim 1, wherein the sugar is glucose.
3. The small molecule fiber penetration softener according to claim 2, wherein the alcohol is one or two of ethanol and n-butanol mixed at any ratio.
4. A small molecule fiber penetrating softener according to claim 3 wherein the acid is sulfuric acid.
5. The small molecule fiber penetration softener of claim 1, wherein the base is sodium carbonate.
6. The small molecule fiber penetrating softener of claim 4, wherein the modifier is N-methylmorpholine oxide.
7. The small-molecule fiber penetration softener according to claim 6, wherein the auxiliary agent is a rapid penetration agent T.
8. The preparation method of the small-molecule fiber penetration softener according to claim 7, comprising the following steps:
step S1: mixing sugar and alcohol, adding deionized water, stirring for dissolving, adding sulfuric acid while maintaining the stirring state, mixing, controlling the stirring speed to be 180-360rpm, heating to 82-130 ℃, and performing reflux reaction for 2-3h to prepare a small molecular active mixed solution;
step S2: adding the rest deionized water and sodium carbonate into the small molecular active mixed solution, stirring and dissolving, then adding N-methylmorpholine oxide and a rapid penetrating agent T, stirring and mixing to prepare the penetrating softener.
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| CN106827140A (en) * | 2016-12-29 | 2017-06-13 | 上海建工集团股份有限公司 | Timber softening agent and method |
| CN108978336A (en) * | 2018-08-08 | 2018-12-11 | 东莞市白天鹅纸业有限公司 | A kind of paper grade (stock) softening agent and preparation method thereof |
| CN109939612A (en) * | 2019-03-11 | 2019-06-28 | 上海发凯化工有限公司 | Guerbet alcohol alkyl glucoside surfactant and preparation method thereof |
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| US20040163182A1 (en) * | 2003-02-26 | 2004-08-26 | Huntsman Petrochemical Corporation | Chemical softening compositions for paper products |
| CN104790239A (en) * | 2015-04-20 | 2015-07-22 | 湖南佰霖生物技术有限公司 | Penetrating agent for chemical-mechanical pulping with wood being raw material and preparation method thereof |
| CN106217552A (en) * | 2016-07-28 | 2016-12-14 | 阜南县东奥工艺品有限公司 | A kind of softening method weaving use timber |
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