CN104761864B - There is the preparation method of the urea formaldehyde resin foam degradable raising tray of sandwich structure - Google Patents
There is the preparation method of the urea formaldehyde resin foam degradable raising tray of sandwich structure Download PDFInfo
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- CN104761864B CN104761864B CN201510101738.1A CN201510101738A CN104761864B CN 104761864 B CN104761864 B CN 104761864B CN 201510101738 A CN201510101738 A CN 201510101738A CN 104761864 B CN104761864 B CN 104761864B
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- foam
- urea
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- formaldehyde
- raising tray
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Abstract
There is the preparation method of the urea formaldehyde resin foam degradable raising tray of sandwich structure, relating to the preparation method of a kind of degradable raising tray, this raising tray with degradable ability is made up of according to the following number of weight ratio following components: urea-formaldehyde foam granule: boric acid: polyvinyl alcohol: sodium hydroxide: water: dioctyl succinate disulfonate acid=1 40: 0.1 1: 4 10: 0.05 0.5: 40 200:0.1 2.Raw material of the present invention is extensive, technique is simple, without raw product pollution, the tailing produced when producing urea-formaldehyde foam can be utilized and use low formaldehyde/urea than the urea-formaldehyde foam prepared, goods non-toxic degradable, the material that degraded produces can be that plant provides nitrogen source, the gained raising tray light weight enriched, porous, water-absorbing-retaining and the excellent performance of absorption plant nutrition liquid, be very beneficial for cultivation and the growth of plant.
Description
Technical field
The present invention relates to the preparation method of a kind of degradable raising tray, particularly relate to a kind of there is sandwich structure
The preparation method of urea formaldehyde resin foam degradable raising tray.
Background technology
Soilless culture (soilless culture) refer to without natural soil with substrate or only nursery time substrate,
The later nutritional solution of field planting carries out the cultural method irrigated.Due to soilless culture can the good rhizospheric environment of artificial creation to replace
Soil environment, effectively prevents soil continuous cropping disease and soil salt from accumulating the physiological barrier caused, fully meets crop to mineral nitrogen
The needs of the environmental conditions such as nutrition, moisture, gas, therefore have water-saving, save the features such as fertilizer, saving of labor, high yield and high quality.Wherein, no
With soil, and make substrate with the solid material of non-soil, water nutritional solution, referred to as non-soil culture.
Non-soil culture mainly has the advantage that
Growth of seedling is rapid, and seedling age is short, and root system development is good, and seedling is healthy and strong, neat, and after field planting, transplanting seedling time is short, easily survives,
Can ensure that moisture and nutrient supply are sufficient, substrate ventilation is good.Meanwhile, non-soil culture is easy to science, standardized administration.Soilless culture
It is the substrate with non-soil, supply nutritional solution or the cultivation technique of fully utilized nutritional solution, it is desired to optimal rhizospheric environment.Use
The seedling that non-soil culture mode is cultivated, after field planting, because root system development is good, rhizospheric environment and soilless culture adapt, after field planting not
Hinder root, easily survive, typically no seedling-slowing stage.Meanwhile, non-soil culture also can avoid soil-borne disease and the nematicide that soil nursery brings
Evil.Therefore, soilless culture must use non-soil culture.
At present, utilizing the substrate such as Vermiculitum, perlite, rock wool nutrient solution Seedling is the method that non-soil culture is conventional.So
And on the one hand the substrate with these raw materials as main component cannot provide nutritional labeling for plant, on the other hand also cannot drop
Solve, also can be to environment after use, therefore, develop a kind of new, while meeting plant non-soil culture, both
Nutritional labeling can be provided for plant, can just become a primary problem with rear degradable again.
Chinese patent CN103483613 A, the public affairs respectively such as CN102726276A, CN101134803, CN202773622U
Open a kind of to use the method for urea-formaldehyde resin foaming to prepare the foam plastics technology as soilless raising seedling substrate material.But mesh
The biggest obstacle that front urea-formaldehyde foam fails to be used widely is: the first of Lauxite used by the urea-formaldehyde foam that intensity to be prepared is high
Aldehyde/urea mol ratio must be high, as formaldehyde/urea mole to produce remote super GB more than 1.7/1 during causing foam curing
Burst size of methanal, and burst size of methanal can be made to be less than GB by reducing formaldehyde/urea mol ratio method, but gained foam without
Method makes the cystosepiment with desirable strength.Therefore, on the premise of ensureing that urea-formaldehyde foam burst size of methanal meets GB, how
The intensity improving urea-formaldehyde foam is the key that can urea formaldehyde resin foam be used as raising tray.
Summary of the invention
It is an object of the invention to provide a kind of urea formaldehyde resin foam degradable raising tray with sandwich structure
Preparation method, the method utilizes the low formaldehyde/urea mol ratio Lauxite of low burst size of methanal to make foam, is then comminuted into
Granule；Utilizing polyvinyl alcohol foam specific surface area big, good penetrability and the excellent feature of cementitiousness, by urea-formaldehyde foam granule jail
Combining of jail；The material that Lauxite and polyvinyl alcohol both are readily biodegradable accounts for more than the 97% of pallet gross weight,
With rear to environment almost without pollution.
It is an object of the invention to be achieved through the following technical solutions:
The preparation method of a kind of urea formaldehyde resin foam degradable raising tray with sandwich structure, described method has
The raising tray of degradable ability uses following components, forms according to the following number of weight ratio: urea-formaldehyde foam granule: boric acid: poly-
Vinyl alcohol: sodium hydroxide: water: dioctyl succinate disulfonate acid=1-40: 0.1-1: 4-10: 0.05-0.5: 40-200:0.1-2；
Preparation process comprises the following steps:
1) polyvinyl alcohol of 4-10 part is added to the water, with ensure polyvinyl alcohol mass concentration for 10%, until dissolve；
2) the dioctyl succinate disulfonate acid of 0.1-2 part and the boric acid of 0.1-1 part are joined in above-mentioned aqueous solution, at a high speed
Stirring is allowed to foam；
3) pouring in mould by the half of said process gained foam, shakeouing and be allowed to thickness is 2-5 millimeter；
4) sodium hydroxide of 0.05-0.5 part is added to the water, is configured to the aqueous solution that mass concentration is 10%, will wherein
Half be sprayed onto on the foam of 2-5 millimeters thick；
5) the urea-formaldehyde foam granule of 1-40 part is laid on the foam of 2-5 millimeters thick；
6) remaining foam is shakeout at urea-formaldehyde foam particle surface, it is ensured that foam thickness is 2-5 millimeter；
7) remaining sodium hydroxide solution is sprayed onto on foam uniformly；
8) last, the urea formaldehyde resin foam degradable nursery torr with sandwich structure i.e. can be obtained through natural drying
Dish.
Advantages of the present invention with effect is:
The present invention has a following features:
1. foam made by the low formaldehyde/urea mol ratio Lauxite utilizing low burst size of methanal, is then comminuted into granule；
2. utilizing polyvinyl alcohol foam specific surface area big, good penetrability and the excellent feature of cementitiousness, by urea-formaldehyde foam
Granule combines firmly；
3. the principle utilizing boric acid and sodium hydroxide can crosslink reaction makes polyvinyl alcohol foam solidify, thus enters
One step improves the binding ability of itself and urea-formaldehyde foam granule.
In the most this urea formaldehyde resin foam degradable raising tray with sandwich structure, Lauxite and polyvinyl alcohol
The material that both is readily biodegradable accounts for more than the 97% of pallet gross weight, with rear to environment almost without pollution.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail.
The preparation side of a kind of urea formaldehyde resin foam degradable raising tray with sandwich structure disclosed in this invention
Method.Mainly realized by following processing step: 1) polyvinyl alcohol of 4-10 part is added in appropriate water, poly-to ensure
Vinyl alcohol mass concentration is 10%, until dissolving；
2) the dioctyl succinate disulfonate acid of 0.1-2 part and the boric acid of 0.1-1 part are joined in above-mentioned aqueous solution, at a high speed
Stirring is allowed to foam；
3) pouring in mould by the half of said process gained foam, shakeouing and be allowed to thickness is 2-5 millimeter；
4) sodium hydroxide of 0.05-0.5 part is added in suitable quantity of water, be configured to the aqueous solution that mass concentration is 10%, will
Half therein is sprayed onto on the foam of 2-5 millimeters thick；
5) the urea-formaldehyde foam granule of 1-40 part is laid on the foam of 2-5 millimeters thick；
6) remaining foam is shakeout at urea-formaldehyde foam particle surface, it is ensured that foam thickness is 2-5 millimeter；
7) remaining sodium hydroxide solution is sprayed onto on foam uniformly；
8) last, the urea formaldehyde resin foam degradable nursery torr with sandwich structure i.e. can be obtained through natural drying
Dish.
Below in conjunction with example, the present invention is described in detail.
Example 1:
1) polyvinyl alcohol of 5 parts is added in the water of 45 parts, until dissolving；
2) the dioctyl succinate disulfonate acid of 0.7 part and the boric acid of 0.4 part are joined in above-mentioned aqueous solution, at 1000-
Under the mixing speed of 4000rpm, high-speed stirred is allowed to foam；
3) about 25 parts of foams of said process gained are poured in mould, and shakeout and be allowed to thickness and be about 3 millimeters；
4) sodium hydroxide of 0.4 part is configured to the aqueous solution that mass concentration is 10%, half therein is sprayed onto 3 millis
On the foam that rice is thick；
5) the urea-formaldehyde foam granule of 10 parts is laid on the foam of 3 millimeters thick；
6) remaining foam is shakeout at urea-formaldehyde foam particle surface, it is ensured that foam thickness is 3 millimeters；
7) remaining sodium hydroxide solution is sprayed onto on foam uniformly；
8) last, the urea formaldehyde resin foam degradable nursery torr with sandwich structure i.e. can be obtained through natural drying
Dish.
Example 2:
1) polyvinyl alcohol of 10 parts is added in the water of 90 parts, until dissolving；
2) the dioctyl succinate disulfonate acid of 0.9 part and the boric acid of 0.8 part are joined in above-mentioned aqueous solution, at 1000-
Under the mixing speed of 4000rpm, high-speed stirred is allowed to foam；
3) pouring in mould by about 50 parts of foams of said process gained, shakeouing and be allowed to thickness is 4 millimeters；
4) sodium hydroxide of 0. 5 parts is added in suitable quantity of water, be configured to the aqueous solution that mass concentration is 10%, will wherein
Half be sprayed onto on the foam of 4 millimeters thick；
5) the urea-formaldehyde foam granule of 15 parts is laid on the foam of 4 millimeters thick；
6) remaining foam is shakeout at urea-formaldehyde foam particle surface, it is ensured that foam thickness is 4 millimeters；
7) remaining sodium hydroxide solution is sprayed onto on foam uniformly；
8) last, the urea formaldehyde resin foam degradable nursery torr with sandwich structure i.e. can be obtained through natural drying
Dish.
Claims (1)
1. the preparation method of a urea formaldehyde resin foam degradable raising tray with sandwich structure, it is characterised in that institute
State the raising tray employing following components in method with degradable ability, composition according to the following number of weight ratio: urea-formaldehyde foam
Grain: boric acid: polyvinyl alcohol: sodium hydroxide: water: dioctyl succinate disulfonate acid=1-40: 0.1-1: 4-10: 0.05-0.5: 40-
200:0.1-2；
Preparation process comprises the following steps:
1) polyvinyl alcohol of 4-10 part is added to the water, with ensure polyvinyl alcohol mass concentration for 10%, until dissolve；
2) the dioctyl succinate disulfonate acid of 0.1-2 part and the boric acid of 0.1-1 part are joined in above-mentioned aqueous solution, high-speed stirred
It is allowed to foam；
3) pouring in mould by the half of said process gained foam, shakeouing and be allowed to thickness is 2-5 millimeter；
4) sodium hydroxide of 0.05-0.5 part is added to the water, is configured to the aqueous solution that mass concentration is 10%, by half therein
It is sprayed onto on the foam of 2-5 millimeters thick；
5) the urea-formaldehyde foam granule of 1-40 part is laid on the foam of 2-5 millimeters thick；
6) remaining foam is shakeout at urea-formaldehyde foam particle surface, it is ensured that foam thickness is 2-5 millimeter；
7) remaining sodium hydroxide solution is sprayed onto on foam uniformly；
8) last, the urea formaldehyde resin foam degradable raising tray with sandwich structure i.e. can be obtained through natural drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101738.1A CN104761864B (en) | 2015-03-09 | 2015-03-09 | There is the preparation method of the urea formaldehyde resin foam degradable raising tray of sandwich structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101738.1A CN104761864B (en) | 2015-03-09 | 2015-03-09 | There is the preparation method of the urea formaldehyde resin foam degradable raising tray of sandwich structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104761864A CN104761864A (en) | 2015-07-08 |
| CN104761864B true CN104761864B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510101738.1A Expired - Fee Related CN104761864B (en) | 2015-03-09 | 2015-03-09 | There is the preparation method of the urea formaldehyde resin foam degradable raising tray of sandwich structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113817212B (en) * | 2021-11-08 | 2022-03-29 | 成都大学 | Benzoxazine nitrile resin sandwich structure foam and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798437A (en) * | 2010-03-18 | 2010-08-11 | 北京市农林科学院 | Urea formaldehyde foam matrix for cultivating cold-season turfgrass and preparation method thereof |
| CN102726276A (en) * | 2012-06-07 | 2012-10-17 | 重庆天开园林景观工程有限公司 | Urea-formaldehyde foam plastic cultivation substrate and preparation method thereof |
-
2015
- 2015-03-09 CN CN201510101738.1A patent/CN104761864B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798437A (en) * | 2010-03-18 | 2010-08-11 | 北京市农林科学院 | Urea formaldehyde foam matrix for cultivating cold-season turfgrass and preparation method thereof |
| CN102726276A (en) * | 2012-06-07 | 2012-10-17 | 重庆天开园林景观工程有限公司 | Urea-formaldehyde foam plastic cultivation substrate and preparation method thereof |
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| CN104761864A (en) | 2015-07-08 |
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Effective date of registration: 20171018 Address after: Lang Jun Center No. 28 road 401120 Chongqing city Yubei District Huanglong longta Street Building 3 2-1 Patentee after: Chongqing AOPO Ruisen Technology Co. Ltd. Address before: 110142 Shenyang economic and Technological Development Zone, Liaoning, No. 11 Patentee before: Shenyang University of Chemical Technology |
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Effective date of registration: 20180524 Address after: 401120 Yubei District, Chongqing Longshan street, Yu Song 1 Road 5, Longhu purple capital 3-1 buildings 22-17 Patentee after: CHONGQING GELIN ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD. Address before: 401120, 3, 2-1, Langjun center, 28 Huanglong Road, Dragon Tower Street, Yubei District, Chongqing. Patentee before: Chongqing AOPO Ruisen Technology Co. Ltd. |
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