CN103374321A - Single-component polyurethane sealant and preparation method thereof - Google Patents
Single-component polyurethane sealant and preparation method thereof Download PDFInfo
- Publication number
- CN103374321A CN103374321A CN 201210118400 CN201210118400A CN103374321A CN 103374321 A CN103374321 A CN 103374321A CN 201210118400 CN201210118400 CN 201210118400 CN 201210118400 A CN201210118400 A CN 201210118400A CN 103374321 A CN103374321 A CN 103374321A
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- China
- Prior art keywords
- isocyanate
- component polyurethane
- polyurethane sealant
- forming agent
- dimethylbenzene
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Polyurethanes Or Polyureas (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a single-component polyurethane sealant which is composed of the following components by weight percentage: 41.05% of high-elasticity polymer, 23.45% of calcium carbonate, 5% of titanium dioxide, 28% of forming agent, 2% of dimethylbenzene and 0.5% of moisture scavenger, wherein the high-elasticity polymer is composed of the following components by weight percentage: 7.31% of dimethylbenzene, 7.31% of isocyanate, 85.26% of polyether polyol and 0.12% of moisture scavenger, and the forming agent is composed of the following components by weight percentage: 53.57% of isocyanate, 17.85% of diamine and 28.58% of coupling agent. A preparation method of the single-component polyurethane sealant comprises the following steps of: with a vacuum stirring tank capable of being cooled as a stirrer, adding 41.05% of high-elasticity polymer at first, and then adding 23.45% of calcium carbonate, 5% of titanium dioxide, 28% of forming agent and 2% of dimethylbenzene, stirring until 60 DEG C, and then adding 0.5% of moisture scavenger, and stirring evenly, thereby obtaining the single-component polyurethane sealant, and finally packaging the single-component polyurethane sealant. The single-component polyurethane sealant has the advantage that the self-made forming agent and the polymerization elastomer as well as special moisture removal material are employed so that the caking property, sagging resistance, elasticity and stability of the single-component polyurethane sealant can meet a higher standard.
Description
Technical field
The present invention relates to a kind of seal gum, relate generally to a kind of one-component polyurethane sealant, be applied to wood, the field of sealing technology of metal, metal primer and finish paint, stupalith and plastics.
Background technology
Polyurethane sealant has following characteristics: good wear resistance; Low-temperature pliability; The performance adjustable extent is wider; Physical strength is large; Cementability is good; Good springiness has good Restoration, can be suitable for dynamic seam; Good weatherability, can reach 15～20 years work-ing life; Oil resistance is good; Anti-biological aging; Moderate.Polyurethane sealant also has some shortcomings.As: can not be heat-resisting for a long time; The light color prescription is subjected to ultraviolet light and aging easily; Single component glue package stability packed and ectocine larger, usually solidify slower; May produce bubble and crackle under the high thermal environment; Many occasions need primary coat.The polyurethane sealant water tolerance is also relatively poor simultaneously, and particularly alkaline-resisting water-based is not good enough.
Summary of the invention
One-component polyurethane sealant of the present invention adopts the self-control forming agent, makes product reach better anti-sagging effect and elastic bonding effect, makes permanent snappiness polymeric elastic body by oneself; Employing effectively reduces the moisture content in the product to spy's water-removal agent, to reach best product stability.
For achieving the above object, a kind of one-component polyurethane sealant of the present invention, formed by following weight proportion: snappiness polymer 41.05%, calcium carbonate 23.45%, titanium dioxide 5%, forming agent 28%, dimethylbenzene 2%, water-removal agent 0.5%, described snappiness polymer is comprised of following weight proportion: dimethylbenzene 7.31%, isocyanate 7.31%, polyether glycol 85.26%, water-removal agent 0.12%, described forming agent is comprised of following weight proportion: isocyanate 53.57%, diamines 17.85%, coupling agent 28.58%.
A kind of preparation method of one-component polyurethane sealant is as follows:
At first: proportionally 53.58% isocyanate and 17.85% diamines are joined respectively in 14.29% coupling agent, then stir respectively and make isocyanate solution and two amine aqueous solutions, again isocyanate solution and two amine aqueous solutions fully are mixed and made into forming agent according to 19: 9 ratio with mixing pump.
Secondly: do reactor with heating coolable vacuum stirring still, under agitation add in order respectively 7,31% dimethylbenzene, 7.31% isocyanate and 85.26% polyether glycol, reacting by heating makes the snappiness polymer after the isocyanic acid in the isocyanate fully being reacted away the water-removal agent of rear adding 0.12%.
Again: make agitator with coolable vacuum stirring cylinder, add first snappiness polymer 41.05%, add again calcium carbonate 23.45%, titanium dioxide 5%, forming agent 28%, dimethylbenzene 2% adds water-removal agent 0.5% rear cooling after being stirred to 60 ℃, makes one-component polyurethane sealant after stirring.
At last: pack, with intestines body formula wrapping machine packing, add 1.2% catalyzer with static mixer in the wrapping process and carry out catalysis.
The present invention compared with prior art has following obvious advantage and beneficial effect:
1) adopts self-control forming agent and polymeric elastic body and the special material that dewaters, make cohesiveness, sag resistance, elasticity and the stability of product reach higher standard;
2) employing effectively reduces the moisture content in the product to spy's water-removal agent, to reach best product stability;
3) flexible, low smell, ageing-resistant, can spray paint, can polish and many base materials have good bonding without burn into.
Embodiment
Below in conjunction with specific embodiment the present invention is illustrated:
Now to produce 1000 kilograms of one-component polyurethane sealants as example: manufacturing technique requirent
1, make forming agent
Proportionally 150 kilograms of isocyanate and 50 kilograms of diamines are joined respectively in 40 kilograms of coupling agents, then stir and make 190 kilograms of isocyanate solution and 90 kilogram of two amine aqueous solution, above two kinds of solution fully are mixed and made into 280 kilograms of forming agents according to 19: 9 ratios with mixing pump;
2, make the snappiness polymer
Do reactor with heating coolable vacuum stirring still, under agitation add in order respectively 30 kilograms of isocyanate of 30 kilograms of dimethylbenzene and 350 kilograms of polyether glycols, reacting by heating makes 410.5 kilograms of snappiness polymers after the isocyanic acid in the isocyanate fully reacted away 0.5 kilogram of water-removal agent of rear adding.
3, make finished product
Make agitator with coolable vacuum stirring cylinder, add first 410.5 kilograms of polymers, add again 234.5 kilograms in calcium carbonate, 50 kilograms of titanium dioxides, 280 kilograms of forming agents, 20 kilograms of dimethylbenzene, add 5 kilograms of afterwards coolings of water-removal agent after being stirred to 60 ℃, make 1000 kilograms in colloid after stirring.
4, packing
With intestines body formula wrapping machine packing, add 1.2% catalyzer with static mixer in the wrapping process and carry out catalysis.
Appearance color
Evenly, foreign, thing gel, paste;
Packing
400ml, every of 600ml;
Surface treatment
Adhesive surface should clean, drying, without grease, oil and dust;
Construction
Rigid package: the film that pierces through a mouth gets final product,
Soft packaging: glue is put into the glue rifle and cut off the envelope mouth,
Width cutting Jiao Zui according to seam throws glue into seam with suitable manual or Pneumatic glue gun, and careful operation avoids producing bubble.In case unpack, then must within the relatively short time, be finished,
Temperature to base material and seal gum the best is 15 ℃ to 25 ℃;
Finishing and refine
Finishing and refine must be carried out before surface drying.Conditioner or lubricant must be done suitability/compatibility test in advance, can use after the test passes;
Cleaning
Uncured colloid can use suitable solvent to remove from instrument or equipment.In case after solidifying then can only be removed with the method for machinery.Hand and the skin that exposes should clean with suitable industrial Liquid soap and water after being stained with glue immediately, do not use solvent;
Surface lacquer
Can spray paint with great majority paint commonly used in the surface of this product.Before spraying paint, should should do compatibility test first.In order to obtain best effect, before spraying paint, preferably allow seal gum solidify fully, especially to toast.Should be understood that therefore the thickness of enamelled coating and the elasticity that hardness can weaken glue also may cause the enamelled coating cracking,
The surface of this product can not be used the paint of PVC class or the paint of oxidative cure (such as Synolac) usually;
Quality guaranteed period
Keep dispatching from the factory original packing, envrionment temperature does not break a seal between the 5-35 degree and can guarantee the quality at least 6-12 month;
Use material circumstance
This product contains isocyanate, forbids swallowing, and avoids directly contacting with eyes with skin.
It should be noted that at last: above embodiment is only in order to illustrate the present invention and unrestricted technical scheme described in the invention; Therefore, although this specification sheets has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from technical scheme and the improvement thereof of the spirit and scope of invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (2)
1. one-component polyurethane sealant is characterized in that: be comprised of following weight proportion:
Snappiness polymer---------------------------41.05%
Calcium carbonate---------------------------------23.45%
Titanium dioxide---------------------------------5%
Forming agent---------------------------------28%
Dimethylbenzene---------------------------------2%
Water-removal agent---------------------------------0.5%;
Described snappiness polymer is comprised of following weight proportion:
Dimethylbenzene---------------------------------7.31%
Isocyanate-------------------------------7.31%
Polyether glycol-----------------------------85.26%
Water-removal agent---------------------------------0.12%;
Described forming agent is comprised of following weight proportion:
Isocyanate-------------------------------53.57%
Diamines-----------------------------------17.85%
Coupling agent---------------------------------28.58%;
Wherein the making method of forming agent is as follows: proportionally 53.58% isocyanate and 17.85% diamines are joined respectively in 14.29% coupling agent, then stir respectively and make isocyanate solution and two amine aqueous solutions, again isocyanate solution and two amine aqueous solutions fully are mixed and made into forming agent according to 19: 9 ratio with mixing pump;
Wherein the polymeric making method of snappiness is as follows: do reactor with heating coolable vacuum stirring still, under agitation add in order respectively 7,31% dimethylbenzene, 7.31% isocyanate and 85.26% polyether glycol, reacting by heating makes the snappiness polymer after the isocyanic acid in the isocyanate fully being reacted away the water-removal agent of rear adding 0.12%.
2. one-component polyurethane sealant according to claim 1, it is characterized in that: its preparation method is: make agitator with coolable vacuum stirring cylinder, add first snappiness polymer 41.05%, add again calcium carbonate 23.45%, titanium dioxide 5%, forming agent 28%, dimethylbenzene 2%, add water-removal agent 0.5% rear cooling after being stirred to 60 ℃, make one-component polyurethane sealant after stirring; Pack, with intestines body formula wrapping machine packing, add 1.2% catalyzer with static mixer in the wrapping process and carry out catalysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210118400 CN103374321A (en) | 2012-04-20 | 2012-04-20 | Single-component polyurethane sealant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210118400 CN103374321A (en) | 2012-04-20 | 2012-04-20 | Single-component polyurethane sealant and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103374321A true CN103374321A (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210118400 Pending CN103374321A (en) | 2012-04-20 | 2012-04-20 | Single-component polyurethane sealant and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN103374321A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705715A (en) * | 2018-12-28 | 2019-05-03 | 北京东方雨虹防水技术股份有限公司 | Application and mono-composition poyurethane water-proof paint and preparation method thereof of the acrylic absorbent resin in mono-composition poyurethane water-proof paint |
-
2012
- 2012-04-20 CN CN 201210118400 patent/CN103374321A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705715A (en) * | 2018-12-28 | 2019-05-03 | 北京东方雨虹防水技术股份有限公司 | Application and mono-composition poyurethane water-proof paint and preparation method thereof of the acrylic absorbent resin in mono-composition poyurethane water-proof paint |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131030 |