CN1048558A - Modified emulsion binder and preparation method thereof - Google Patents
Modified emulsion binder and preparation method thereof Download PDFInfo
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- CN1048558A CN1048558A CN 89104578 CN89104578A CN1048558A CN 1048558 A CN1048558 A CN 1048558A CN 89104578 CN89104578 CN 89104578 CN 89104578 A CN89104578 A CN 89104578A CN 1048558 A CN1048558 A CN 1048558A
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- emulsion
- woven fabrics
- binder
- polyvinyl alcohol
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Abstract
The present invention is modified emulsion binder of a kind of Method for bonding production non-woven fabrics use and preparation method thereof.Form by tackiness agent acetate emulsion or acrylic ester emulsion modification commonly used.Modified adhesive is made thickening material with polyvinyl alcohol; Splash into formaldehyde solution generating portion polyvinyl formal, improve cohesive strength.The modified emulsion binder viscosity height of making, the conjunctiva fastness is strong.The non-woven fabrics that uses the present invention to produce, not only cloth cover is bright and clean, and wear resisting property is good, and being significantly increased to pulling force in length and breadth of cloth.Therefore this is a kind of can improving the quality of products, and can reduce the raw material consumption again, the production non-woven fabrics that reduces cost tackiness agent and preparation method thereof.
Description
The present invention relates to a kind of Method for bonding and produce modified emulsion binder of non-woven fabrics use and preparation method thereof.
Method for bonding is produced non-woven fabrics, must use tackiness agent.Producing the tackiness agent that adopts in the non-woven fabrics craft at present is acetate emulsion or acrylic ester emulsion.The preparation of these tackiness agents is all with water as medium, and the superpolymer microparticulate is the hygrometric state slurries in water, and cohesive force is relatively poor.During use, behind the cloth soaking paste liquid, binding agent and measuring fiber form a kind of discontinuous particle bond, and adhesive film does not join together, and cohesive strength is not good.Therefore, the wet fiber network behind the soaking paste liquid is without before drying, and obvolvent fibre network together just may stretch or draw back, interfibrously sticking take face and reduce and make, fibre network is damaged, and influences quality product, the cloth cover feel is coarse, and smooth finish is poor, and the intensity of cloth is also undesirable.For improving the brute force of cloth, just exempted to mend sometimes to increase binder dosage.Yet it is bad that binder dosage increases the back effect, even on the contrary, causes the product sclerosis, conjunctiva embrittlement, downgrade.In order to overcome the deficiency that these tackiness agents exist, improve the quality of non-woven fabrics product, reduce cost, the invention provides a kind of emulsion binder of modification, produce needs to satisfy.
The objective of the invention is the effect by chemical assistant, Dichlorodiphenyl Acetate vac emulsion or acrylic ester emulsion tackiness agent carry out modification, thereby generate a kind of high viscosity, emulsion binder that the conjunctiva fastness is strong.
In brief, The present invention be directed to acetate emulsion or acrylic ester emulsion tackiness agent viscosity is low, cohesive strength difference and the modification done.Modified emulsion binder is made thickening material with polyvinyl alcohol, makes the cohesive force of the superpolymer dependence vinyl alcohol that is dispersed in the vinyl acetate between to for plastic or the acrylate aqueous solution, and is implicative of each other the superpolymer particulate that is dispersed in the water, thereby improves the viscosity of emulsion binder.In addition, modified emulsion binder of the present invention also utilizes the polyvinyl formal advantage good especially to the fiber cohesive strength, in polyvinyl alcohol, add formaldehyde, make the part polyethylene alcohol in the emulsion binder change into polyvinyl formal, to improve the cohesive strength of emulsion binder.
Wherein, polyvinyl alcohol is generated by vinyl acetate between to for plastic and sodium hydroxide heating hydrolysis, and Heating temperature is 80-110 ℃, and the structure and the degree of hydrolysis of emulsion vinyl acetate between to for plastic or acrylate depended in its effect in tackiness agent.Degree of hydrolysis is at the polyvinyl alcohol more than 99%, and the all-hydrolytic resultant of reaction is a highly crystalline, and the acetoxy group more than 99% is a hydroxyl metathetical polymkeric substance, and water tolerance is fairly good.Reaction formula is:
The polyvinyl alcohol of degree of hydrolysis about 88%, half hydrolysis reactant part is hydroxyl metathetical polymkeric substance for acetoxy group, and is soluble in water.Half hydrolysis reaction formula is:
The reaction formula that polyvinyl alcohol adds formaldehyde generation polyvinyl formal is:
The preparation method of modified emulsion binder is as follows:
At first, the polyvinyl alcohol with vinyl acetate between to for plastic and the generation of sodium hydroxide heating hydrolysis dilutes.
The polyvinyl alcohol of getting 2-6% by weight percentage is contained in the size cooking pan, adds 50% water, stirs, and is heated to 80-110 ℃ then.Stop heating, stir fast.Reheat, all after the dissolving, naturally cooling is stand-by for the polyvinyl alcohol in size cooking pan.
Secondly, make the Polyvinyl acetal reaction.
The formaldehyde solution of getting 0.1-1% by weight percentage splashes into temperature in the size cooking pan in 45-70 ℃ polyvinyl alcohol solution, stir, and with the pH value of hydrochloric acid control solution in the 6-6.5PH scope.
At last, the mixed chemical auxiliary agent is made emulsion binder.
After claiming the acetate emulsion or acrylic ester emulsion water mixing (surplus per-cent) dilution of 4-15% by weight percentage, pour in the chemical assistant size cooking pan of pH value in the 6-6.5PH scope, simultaneously, add the 0.001-0.01% whitening agent, stirring is preparation cost invention modified emulsion binder.
Advantage of the present invention is conspicuous.Tackiness agent viscosity height after the modification, conjunctiva fastness are strong, thereby have both reduced the consumption of tackiness agent, have saved starting material, have reduced cost again.Use modified emulsion binder of the present invention to produce non-woven fabrics, not only cloth cover is bright and clean, and wear resisting property is good, and all the significantly improving to pulling force in length and breadth of product.It is a kind of practical tackiness agent of producing non-woven fabrics.
Be described in detail the embodiment that meets theme of the present invention below:
Preparing 100 kilogram weights modified emulsion binder slurry formula of the present invention is:
6 kilograms of acetate emulsion or acrylic ester emulsions;
4 kilograms of 99% polyvinyl alcohol;
0.5 kilogram of formaldehyde solution;
Whitening agent 5 grams;
All the other are water.
By as above 100 kilograms of modified emulsion binder technological processs of formulation are as follows:
1. claim 4 kilograms of polyvinyl alcohol to put into size cooking pan, add 50 kg of water and mix.Heating size cooking pan to 90 ℃.After stopping heating, stir fast.Reheat size cooking pan to 100 ℃, polyvinyl alcohol all dissolves in the size cooking pan, and naturally cooling is stand-by.
2. claim 500 gram formaldehyde solutions, splash into temperature and be in 60 ℃ the size cooking pan, stir, and with the pH value of solution in the hydrochloric acid control bucket in the 6-6.5PH scope.
3. pour size cooking pan into after claiming 6 kilograms of acetate emulsions or acrylic ester emulsion to add water (surplus) dilution, simultaneously, in bucket, add 5 gram whitening agent, stir, promptly be prepared into 100 kilograms of modified emulsion binders of the present invention.
Claims (2)
1, a kind of Method for bonding is produced the emulsion binder that non-woven fabrics is used, and comprises acetate emulsion or acrylic ester emulsion, it is characterized in that the binder wt percentage component of the present invention after the modification is:
Acetate emulsion or acrylic ester emulsion: 4-15%
Polyvinyl alcohol: 2-6%
Formaldehyde solution: 0.1-1%
Whitening agent: 0.001-0.01%
Water: surplus
2, a kind of Method for bonding is produced the emulsion binder preparation method that non-woven fabrics is used, and comprises acetate emulsion or preparing acrylate emulsion technology, it is characterized in that:
A. vinyl acetate between to for plastic and sodium hydroxide heating hydrolysis are generated polyvinyl alcohol, temperature is at 80-110 ℃;
B. (temperature is 45-70 ℃) adds formaldehyde solution generating portion polyvinyl formal in the polyvinyl alcohol of hydrolysis, and splashes into hydrochloric acid controlled liq pH value in the 6-6.5PH scope;
C. chemical assistant and the whitening agent made from a, b technology behind dilute with water acetate emulsion or the acrylic ester emulsion is mixed into modified emulsion binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89104578 CN1048558A (en) | 1989-07-03 | 1989-07-03 | Modified emulsion binder and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89104578 CN1048558A (en) | 1989-07-03 | 1989-07-03 | Modified emulsion binder and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1048558A true CN1048558A (en) | 1991-01-16 |
Family
ID=4855606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89104578 Pending CN1048558A (en) | 1989-07-03 | 1989-07-03 | Modified emulsion binder and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1048558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409008A (en) * | 2013-07-03 | 2013-11-27 | 安徽真信涂料有限公司 | High-adhesive force interior wall coating material and preparation method thereof |
-
1989
- 1989-07-03 CN CN 89104578 patent/CN1048558A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409008A (en) * | 2013-07-03 | 2013-11-27 | 安徽真信涂料有限公司 | High-adhesive force interior wall coating material and preparation method thereof |
| CN103409008B (en) * | 2013-07-03 | 2016-01-20 | 安徽真信涂料有限公司 | Interior wall coating of a kind of high adhesive force and preparation method thereof |
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