CN103145909A

CN103145909A - Paper used organosilicone modification acrylate emulsion and preparation method thereof

Info

Publication number: CN103145909A
Application number: CN2013100311716A
Authority: CN
Inventors: 吴盛恩; 陆伟
Original assignee: HANGZHOU RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY Co Ltd
Current assignee: HANGZHOU RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY Co Ltd
Priority date: 2013-01-28
Filing date: 2013-01-28
Publication date: 2013-06-12
Anticipated expiration: 2033-01-28
Also published as: CN103145909B

Abstract

The invention relates to a paper used organosilicone modification acrylate emulsion and a preparation method thereof. An emulsion for heat-resisting paper and a preparation method of the emulsion are provided. The emulsion is pasted on a surface of common paper, heat-resistant performance of the paper is led to be improved under the condition that tensile strength and bursting strength of the paper are slightly improved. The emulsion is prepared by using raw materials, by weight, of 1-10% of unsaturated double bond organosilicone monomer, 1-5% of unsaturated acid, 10-35% of hard monomer, no less than 10% of soft monomer, 1-5% of emulgator, 0.1-1% of initiator, 0.1-1% of buffer agent, 1-8% of N-hydroxy acrylamide and 35-40% of solid content. And the raw materials are reacted in water to obtain the paper used organosilicone modification acrylate emulsion.

Description

A kind of paper organosilicon-modified acrylate emulsion and preparation method thereof

Technical field

The present invention relates to a kind of paper organosilicon-modified acrylate emulsion, be particularly useful for the production of heat-resisting paper.

Background technology

Under the condition of high temperature, due to the fracture of hydrogen bond and the degraded of fiber, can cause the paper resistance toheat to descend, but this class speciality paper take stainless steel lining paper, high-temperature insulation paper, high temperature resistant U.S. line paper, leatheroid separate-type paper etc. as representative all requires paper to have good thermotolerance, so heat-resisting paper arises at the historic moment.But mostly traditional method is to change the proportioning of fibrous material, adds simultaneously the resistance toheat that heat resistance accessory is improved paper in paper making process.Perhaps adopt mineral fibre, use a large amount of sizing agents, produce special fibre paper, such as mica paper, stone paper, asbestos paper etc., although this type of paper resistance toheat be greatly improved, complex manufacturing, energy consumption is large, and production cost is high, and the over-all properties of paper is poor.

Summary of the invention

The technical issues that need to address of the present invention are, emulsion of a kind of heat-resisting paper and preparation method thereof is provided, and emulsion is coated on the plain paper surface, in the situation that the tensile strength of paper and bursting strength slightly promote, resistance toheat is improved.

Paper organosilicon-modified acrylate emulsion of the present invention is characterized in that containing following weight percent raw material, reacts to obtain in water (distilled water):

A) contain the organosilane monomer 1～10% of unsaturated double-bond, the organosilane monomer that contains unsaturated double-bond is selected from least a in vinyltriethoxysilane, γ-methacryloxypropyl trimethoxy silane, vinyl silane triisopropoxide, γ-methacryloxypropyl three isopropoxy silane, vinyl silane triisopropoxide;

B) unsaturated acid 1～5%, and unsaturated acid is selected from acrylic or methacrylic acid;

C) hard monomer 10～35%, and hard monomer is selected from methyl methacrylate or vinylbenzene;

D) soft monomer 〉=10%, soft monomer is selected from butyl acrylate or ethyl propenoate;

E) emulsifying agent 1～5%, and emulsifying agent is the combination of OP-10 and sodium lauryl sulphate, and both amount ratios are 0.5～1.5:3;

F) initiator 0.1～1%, and initiator is selected from ammonium persulphate or Potassium Persulphate;

G) buffer reagent 0.1～1%, and buffer reagent is sodium bicarbonate;

H) the N-hydroxyacrylamide 1～8%;

Solid content is 35～40%.

As preferably, the consumption of described hard monomer and soft monomer is more preferably 1:1 of 3:1～3(); Described emulsifying agent, wherein the amount ratio of OP-10 and sodium lauryl sulphate is 1:2; Described buffer reagent is sodium bicarbonate, and its consumption is 0.2～0.4%; The amount ratio of described N-hydroxyacrylamide is 1～3%.

the paper of the present invention preparation method of organosilicon-modified acrylate emulsion, as follows: with prolong, Dropping feeder, in the four-hole boiling flask of stirring rod and thermometer, add successively distilled water, emulsifying agent, initiator, buffer reagent, slowly be warming up to 75 ℃ ± 5 ℃, drip simultaneously unsaturated acid with separating funnel, the organosilane monomer that contains unsaturated double-bond, hard monomer, soft monomer and N-hydroxyacrylamide, dripped in 2～3 hours, in 80 ℃ ± 5 ℃ reactions 2～3 hours, be cooled to below 30 ℃, through 200～300 order net filtrations, obtain product---with the paper organosilicon modified crylic acid resin of blue light.

The useful technique effect of product of the present invention is, the paper resistance toheat after use is improved, and tensile strength and the bursting strength of paper slightly promote, and the whiteness retention rate is more than 70%.The preparation method of product of the present invention has the beneficial effects such as emulsion synthesized gel rubber rate is low, synthetic emulsion storage time length, stable performance.The synthetic gel fraction of emulsion can accomplish that below 5%, the synthetic emulsion storage time can reach more than three months, and stable performance during this.

Embodiment

Embodiment 1

with prolong, Dropping feeder, in the four-hole boiling flask of stirring rod and thermometer, add entry 210 grams, OP-10 2 grams, dodecyl sulphate 4 grams, ammonium persulphate 1 gram, sodium bicarbonate 1 gram, slowly be warming up to 75 ℃ ± 5 ℃, drip simultaneously vinylformic acid 6 grams with separating funnel, vinyltriethoxysilane 15 grams, methyl methacrylate 60 grams, butyl acrylate 60 grams, N-hydroxyacrylamide 4 grams, dripped in 2 hours, in 80 ℃ ± 5 ℃ reactions 2 hours, be cooled to below 30 ℃, through 200 order net filtrations, obtain the paper organosilicon modified crylic acid resin with blue light.

Get synthetic paper with blue light and be coated in equably common filter paper surface with 50 grams of organosilicon modified crylic acid resin after dilution, put into baking oven, oven temperature is warming up to 200 ℃ gradually from 60 ℃.

Embodiment 2

Just change the consumption of methyl methacrylate and butyl acrylate, wherein methyl methacrylate is 80 grams, and butyl acrylate is 40 grams, and the ratio of methyl methacrylate and butyl acrylate is 2 to 1, and other concrete grammars and technique are identical with embodiment 1.

Embodiment 3

Just change the consumption of ammonium persulphate, ammonium persulphate is 0.6 gram, and other concrete grammars and technique are identical with embodiment 1.

Embodiment 4

Be after dripping vinylformic acid 6 grams, vinyltriethoxysilane 15 grams, methyl methacrylate 60 grams, butyl acrylate 60 grams, then add N-hydroxyacrylamide 8 grams, other concrete grammars and technique are identical with embodiment 1.

Embodiment 5

Just change the consumption of OP-10 and sodium lauryl sulphate, wherein OP-10 is 3 grams, sodium lauryl sulphate 3 grams, and the ratio of OP-10 and sodium lauryl sulphate is 1 to 1, other concrete grammars and technique are identical with embodiment 1.

Embodiment 1-5 emulsion property relatively

Get common filter paper, be coated in equably common filter paper with the synthetic paper with blue light of reaction with 50 grams of organosilicon modified crylic acid resin after dilution surperficial, put into baking oven, oven temperature is warming up to 200 ℃ gradually from 60 ℃, and keep oven temperature 200 ℃ ± 2 ℃ 2 hours, investigate the test paper in the situation that glue spread is certain, the tensile strength of paper, through 200 ℃ of bakings whiteness of 2 hours, the difference of bursting strength, particular case sees the following form.

Table 1 embodiment 1-5 emulsion property relatively

Claims

1. a paper organosilicon-modified acrylate emulsion, is characterized in that containing following weight percent raw material, reacts to obtain in water:

G) buffer reagent 0.1～1%, and buffer reagent is sodium bicarbonate;

H) the N-hydroxyacrylamide 1～8%;

The emulsion solid content is 35～40%.

2. paper organosilicon-modified acrylic emulsion according to claim 1, the consumption that it is characterized in that described hard monomer and soft monomer is 3:1～3; Described emulsifying agent, wherein the amount ratio of OP-10 and sodium lauryl sulphate is 1:2; Described buffer reagent is sodium bicarbonate, and its consumption is 0.2～0.4%; The amount ratio of described N-hydroxyacrylamide is 1～3%.

3. paper organosilicon-modified acrylic emulsion according to claim 2, the amount ratio that it is characterized in that described hard monomer and soft monomer is 1:1.

4. one kind as claim 1 or the 2 or 3 described paper preparation method with organosilicon-modified acrylate emulsions, it is characterized in that as follows: with prolong, Dropping feeder, in the four-hole boiling flask of stirring rod and thermometer, add successively distilled water, emulsifying agent, initiator, buffer reagent, slowly be warming up to 75 ℃ ± 5 ℃, drip simultaneously unsaturated acid with separating funnel, the organosilane monomer that contains unsaturated double-bond, hard monomer, soft monomer and N-hydroxyacrylamide, dripped in 2～3 hours, in 80 ℃ ± 5 ℃ reactions 2～3 hours, be cooled to below 30 ℃, through 200～300 order net filtrations, obtain product.

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