CN1226375C - Adhesion agent and preparing method thereof - Google Patents
Adhesion agent and preparing method thereof Download PDFInfo
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- CN1226375C CN1226375C CN 03137111 CN03137111A CN1226375C CN 1226375 C CN1226375 C CN 1226375C CN 03137111 CN03137111 CN 03137111 CN 03137111 A CN03137111 A CN 03137111A CN 1226375 C CN1226375 C CN 1226375C
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- tackiness agent
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Abstract
The present invention discloses a green environment protective adhesive which is prepared from, in portions by weight, 25 to 51 portions of modified starch, 10 to 35 portions of polyvinyl alcohol and 5 to 25 portions of ethylene-vinyl acetate copolymer. The green environment protective adhesive does not contain formaldehyde and does not release formaldehyde when used for wooden composite boards. The green environment protective adhesive has the advantages of no smell, no toxicity, no pollution and high bonding strength.
Description
Technical field
The present invention relates to a kind of tackiness agent and preparation method thereof.
Background technology
In order to ensure people health, country has issued wood composite board burst size of methanal standard.But the tackiness agent that at present general enterprise adopts in the preparation wood composite board mainly is a urea-formaldehyde resin, the advantage of this tackiness agent is that raw material sources are abundant, cheap, but being urea-formaldehyde resin, its shortcoming is subjected to the restriction of synthesis technique, in any case improve prescription, with the severe overweight all of burst size of methanal in the bonding wood composite board of urea-formaldehyde resin.Therefore develop a kind of environment-friendly type tackiness agent of tasteless nontoxic pollution-free, have vast market prospect.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can not discharge formaldehyde, and the high tackiness agent of bonding strength and preparation method thereof.
For achieving the above object, the present invention takes following technical scheme:
A kind of tackiness agent is made up of the treated starch of 10～70 weight parts, the polyvinyl alcohol of 10～50 weight parts, the ethylene-vinyl acetate copolymer of 5～30 weight parts.
The ethylene-vinyl acetate copolymer of the polyvinyl alcohol of the treated starch of wherein preferred 25～50 weight parts, 10～30 weight parts, 10～25 weight parts is formed.
The polymerization ratio of wherein said ethylene-vinyl acetate copolymer is 14～16: 28～34, can be the VAE product of 707 models made of commercially available Beijing Chemical Plant; Described polyvinyl alcohol can be commercially available PVA-1788, PVA-1799 or PVA-2099, and preferred solid content is 2～20% PVA-2099; Described treated starch can be maize modified starch, wheat treated starch, cassava treated starch etc., preferred cassava treated starch.
The raw material of described treated starch consists of: the starch of 10～30 weight parts; 1.7 the clorox of～9 weight parts; The sodium hydroxide of 1～3 weight part; 0.14 the Sulfothiorine of～0.75 weight part; 0.2 the borax of～0.8 weight part; The water of 70～120 weight parts; Appropriate hydrochloric acid.
A kind of preparation method of tackiness agent, its steps in sequence is: the starch with 10～30 weight parts drops into reactor earlier, adds the water of 70～120 weight parts, stirs, and is heated to 45～65 ℃; The clorox that slowly adds 1.7～9 weight parts, constant temperature 15～30 minutes; The sodium hydroxide that adds 1～3 weight part, constant temperature 20～45 minutes; Add the Sulfothiorine of 0.14～0.75 weight part and the borax of 0.2～0.8 weight part, constant temperature 20～45 minutes; Add the appropriate hydrochloric acid neutralization, make its pH value reduce to 7～8, reduce to the room temperature discharging, get treated starch; Get this treated starch 25～51 weight parts, mix, get tackiness agent with the polyvinyl alcohol of 10～35 weight parts, the ethylene-vinyl acetate copolymer of 5～25 weight parts.
Tackiness agent of the present invention is used for the bonding of wood composite board according to a conventional method.
Advantage of the present invention is: compare with existing urea formaldehyde resin adhesive, do not contain formaldehyde in the synthesis material of tackiness agent of the present invention, can not produce formaldehyde in the finished product yet, so be used for not Diazolidinyl Urea of wood composite board, tasteless nontoxic pollution-free, and bonding strength height.
The present invention will be further described below by embodiment, but and do not mean that limiting the scope of the invention.
Embodiment
Embodiment 1
Tapioca (flour) with 20 grams drops into reactor earlier, adds the water of 85 grams, stirs, and is heated to 45～65 ℃; The clorox that slowly adds 5.3 grams, constant temperature 15～30 minutes; The sodium hydroxide that adds 2 grams, constant temperature 20～45 minutes; Add the Sulfothiorine of 0.45 gram and the borax of 0.6 gram, constant temperature 20～45 minutes; Add the appropriate hydrochloric acid neutralization, make its pH value reduce to 7～8, reduce to the room temperature discharging, get treated starch; Get this treated starch 39 grams, with the solid contents of 23 grams be that 2～20% PVA-2099, the ethylene-vinyl acetate copolymers (ethene accounts for weight 15%) of 15 grams mix, tackiness agent 1 of the present invention.
Embodiment 2
W-Gum with 10 grams drops into reactor earlier, adds the water of 70 grams, stirs, and is heated to 45～65 ℃; The clorox that slowly adds 1.7 grams, constant temperature 15～30 minutes; The sodium hydroxide that adds 1 gram, constant temperature 20～45 minutes; Add the Sulfothiorine of 0.14 gram and the borax of 0.2 gram, constant temperature 20～45 minutes; Add the appropriate hydrochloric acid neutralization, make its pH value reduce to 7～8, reduce to the room temperature discharging, get treated starch; Get this treated starch 15 grams, with the solid contents of 10 grams be that 2～10% PVA-1788, the ethylene-vinyl acetate copolymers (ethene accounts for weight 14%) of 5 grams mix, tackiness agent 2 of the present invention.
Embodiment 3
W-Gum with 30 grams drops into reactor earlier, adds the water of 120 grams, stirs, and is heated to 45～65 ℃; The clorox that slowly adds 9 grams, constant temperature 15～30 minutes; The sodium hydroxide that adds 3 grams, constant temperature 20～45 minutes; Add the Sulfothiorine of 0.75 gram and the borax of 0.8 gram, constant temperature 20～45 minutes; Add the appropriate hydrochloric acid neutralization, make its pH value reduce to 7～8, reduce to the room temperature discharging, get treated starch; Get this treated starch 51 grams, with the solid contents of 35 grams be that 6～8% PVA-1799, the ethylene-vinyl acetate copolymers (ethene accounts for weight 16%) of 25 grams mix, tackiness agent 3 of the present invention.
According to a conventional method with the invention described above tackiness agent 1,2 and 3 and urea formaldehyde resin adhesive be used for the bonding of willow composition board.Owing to do not contain formaldehyde in the tackiness agent, so Diazolidinyl Urea not.
Adopt the described method test in standard GB/T14074.10～93 bonding strength.The result is as follows:
| Tackiness agent | Tackiness agent 1 of the present invention | Tackiness agent 2 of the present invention | Tackiness agent 3 of the present invention | Urea formaldehyde resin adhesive |
| Bonding strength | 4MPa | 3MPa | 3MPa | 2MPa |
As seen from the above table, the bonding strength of tackiness agent of the present invention is better than existing tackiness agent.
The viscosity that adopts NDJ-1 type rotational viscosimeter to test above-mentioned tackiness agent and urea formaldehyde resin adhesive, 25 ℃ of room temperatures, adopt No. 3 rotors to record viscosity to be:
| Tackiness agent | Tackiness agent 1 of the present invention | Tackiness agent 2 of the present invention | Tackiness agent 3 of the present invention | Urea-formaldehyde resin |
| Viscosity | 3000mPa·s | 2500mPa·s | 4000mPa·s | 800～1500mPa·s |
As seen from the above table, the viscosity of tackiness agent of the present invention is higher than the viscosity of existing tackiness agent.
Claims (6)
1, a kind of tackiness agent is characterized in that: be made up of the treated starch of 10～70 weight parts, the polyvinyl alcohol of 10～50 weight parts, the ethylene-vinyl acetate copolymer of 5～30 weight parts.
2, tackiness agent according to claim 1 is characterized in that: described treated starch is 25～50 weight parts, and described polyvinyl alcohol is 10～30 weight parts, and described ethylene-vinyl acetate copolymer is 10～25 weight parts.
3, tackiness agent according to claim 1 and 2 is characterized in that: the raw material of described treated starch consists of: the starch of 10～30 weight parts; 1.7 the clorox of～9 weight parts; The sodium hydroxide of 1～3 weight part; 0.14 the Sulfothiorine of～0.75 weight part; 0.2 the borax of～0.8 weight part; The water of 70～120 weight parts and appropriate hydrochloric acid.
4, tackiness agent according to claim 3 is characterized in that: described starch is tapioca (flour).
5, tackiness agent according to claim 4 is characterized in that: the polymerization ratio of described ethylene-vinyl acetate copolymer is 14～16: 28～34.
6, the preparation method of the described tackiness agent of claim 1, its steps in sequence is: the starch with 10～30 weight parts drops into reactor earlier, adds the water of 70～120 weight parts, stirs, and is heated to 45～65 ℃; The clorox that slowly adds 1.7～9 weight parts, constant temperature 15～30 minutes; The sodium hydroxide that adds 1～3 weight part, constant temperature 20～45 minutes; Add the Sulfothiorine of 0.14～0.75 weight part and the borax of 0.2～0.8 weight part, constant temperature 20～45 minutes; Add the appropriate hydrochloric acid neutralization, make its pH value reduce to 7～8, reduce to the room temperature discharging, get treated starch; Get this treated starch 10～70 weight parts, mix, get tackiness agent with the polyvinyl alcohol of 10～50 weight parts, the ethylene-vinyl acetate copolymer of 5～30 weight parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137111 CN1226375C (en) | 2003-06-04 | 2003-06-04 | Adhesion agent and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137111 CN1226375C (en) | 2003-06-04 | 2003-06-04 | Adhesion agent and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1552789A CN1552789A (en) | 2004-12-08 |
| CN1226375C true CN1226375C (en) | 2005-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03137111 Expired - Fee Related CN1226375C (en) | 2003-06-04 | 2003-06-04 | Adhesion agent and preparing method thereof |
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| CN (1) | CN1226375C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888002B (en) * | 2005-03-31 | 2010-11-17 | 朱寿会 | Method for adhering woody product or decoration with polymer adhesive |
| CN103074006B (en) * | 2013-01-22 | 2015-05-20 | 江苏苏博特新材料股份有限公司 | Natural polymer water-soluble adhesive and preparation method thereof |
| CN103360988B (en) * | 2013-07-05 | 2016-03-16 | 全椒海丰印刷包装有限公司 | A kind of Carton environment-friendlyformaldehyde-free formaldehyde-free adhesive and preparation method thereof |
| CN106854443A (en) * | 2016-12-11 | 2017-06-16 | 钦州学院 | A kind of starch conversion polyvinyl alcohol Building Adhesive and preparation method thereof |
| CN106833430A (en) * | 2017-03-30 | 2017-06-13 | 杨振华 | A kind of corrugated board production environment-friendly adhesive and preparation method thereof |
| CN111844920B (en) * | 2018-12-18 | 2021-12-14 | 福建省文松彩印有限公司 | Environment-friendly compression-resistant waterproof corrugated carton and manufacturing method thereof |
| CN111574932A (en) * | 2020-07-08 | 2020-08-25 | 江门市豈铭实业有限公司 | Environment-friendly modified starch adhesive and preparation method thereof |
-
2003
- 2003-06-04 CN CN 03137111 patent/CN1226375C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1552789A (en) | 2004-12-08 |
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Effective date of registration: 20190625 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Research Institute of engineering and Technology Co., Ltd. Address before: 100088, 2, Xinjie street, Beijing Patentee before: General Research Institute for Nonferrous Metals |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 Termination date: 20200604 |