CN106634695A - Container sealing glue and preparation method thereof - Google Patents

Abstract

The invention discloses a container sealing glue, which comprises, by weight, 100-110 parts of nitrile butadiene rubber, 40-50 parts of ethylene propylene diene monomer, 10-15 parts of sodium formate, 15-20 parts of sodium acetate, 8-10 parts of sodium acrylate, 3-5 parts of sodium polyacrylate, 5-8 parts of cross-linked-polyisobutylene grafted sodium maleate, 140-168 parts of gasoline, 100-120 parts of ethyl acetate, 60-72 parts of acetone, 4-6 parts of rutile type titanium dioxide, 30-35 parts of light calcium carbonate, 60-70 parts of talc powder, 5-7 parts of sericite, 3-5 parts of vulcanized paste, 5-8 parts of diatomaceous earth, 0.4-0.6 part of an ultraviolet ray stabilizer, and 0.05-0.1 part of an antioxidant. According to the present invention, by optimizing the components, the sealing glue having the good comprehensive performance is obtained, the harmful substance consumption is reduced, the environmental pollution is reduced, and the preparation process is updated according to the optimized components.

Description

A kind of container fluid sealant and preparation method thereof

Technical field

The invention belongs to fluid sealant technical field, more particularly to a kind of container fluid sealant and preparation method thereof.

Background technology

Fluid sealant is a kind of flowing or crowded indefinite form material, to fill up the joint of a closing, can rely on embedded drying, temperature Degree change, solvent volatilization, is chemically crosslinked the stability of material, and progressively by solid gum, viscoelastic sexual behaviour or elaxtic seal Shaping.In order to ensure sealing function, sealant should possess following basic characteristics：1. good pointing, storage stability is nontoxic Or low toxicity；2. with other media hyposmosis；3. the seam of stretching motion, displacement and deformation can be resisted；4. by cyclic deformation Joint, can guarantee that its performance and shape are recovered completely；5. enough strength bears pressure；6. in high temperature, low temperature is not crisp Split and overbate；7. weatherability, not efflorescence, cracking, dismiss or excess shrinkage；8. specific occasion, concrete manifestation are applied to There is wearability, puncture-resistant is corrosion-resistant, resistance to roll, inflammable, does not pollute, insulation or conduction etc..

Weld seam is generally sealed by fluid sealant, filled, beautified.In prior art, fluid sealant is usually used to be carried out to weld seam During sealing, at different temperatures, due to there are the different coefficients of expansion between fluid sealant and weld seam, weld seam is usually caused with sealing Occur gap between glue and cause to loosen, meanwhile, in wet condition, fluid sealant is easy to come off, and, the synthesis of fluid sealant Performance is also not up to optimum state, needs to update.

The content of the invention

It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of container fluid sealant and preparation method thereof, fit For the sealing of weld seam on container.

A kind of container fluid sealant proposed by the present invention, the fluid sealant includes by weight following component：

Nitrile rubber, 100～110；Ethylene propylene diene rubber, 40～50；Sodium formate, 10～15；Sodium acetate, 15～20；Third Olefin(e) acid sodium, 8～10；Sodium Polyacrylate, 3～5；Crosslinking-polyisobutene grafted maleic sodium salt, 5～8；Gasoline, 140～168； Ethyl acetate, 100～120；Acetone, 60～72；Rutile type titanium white, 4～6；Precipitated calcium carbonate, 30～35；Talcum Powder, 60～70；Sericite, 5～7；Sulfuration cream, 3～5；Diatomite, 5～8；Ultra-violet stabilizer, 0.4～0.6；It is anti- Oxidant, 0.05～0.1；Wherein, gasoline, ethyl acetate, acetone keep increasing and decreasing in proportion；The talcum powder is modified for surface Talcum powder, the modifying agent for being used is aluminate coupling agent；The ultra-violet stabilizer be hindered amine as light stabilizer, the antioxygen Agent is Hinered phenols antioxidant.

Preferably, the fluid sealant component is as follows by weight：

Nitrile rubber, 110；Ethylene propylene diene rubber, 50；Sodium formate, 15；Sodium acetate, 20；PAA, 10；Polypropylene Sour sodium, 5；Crosslinking-polyisobutene grafted maleic sodium salt, 8；Gasoline, 168；Ethyl acetate, 120；Acetone, 72；Golden red Stone-type titanium dioxide, 5；Precipitated calcium carbonate, 30；Talcum powder, 70；Sericite, 7；Sulfuration cream, 5；Diatomite, 8；It is ultraviolet Line stabilization agent, 0.6；Antioxidant, 0.1.

Preferably, by 1:3 weight part ratio, part or all of diatomite is replaced with organobentonite.

Preferably, the fluid sealant component is as follows by weight：

Nitrile rubber, 105；Ethylene propylene diene rubber, 45；Sodium formate, 13；Sodium acetate, 17；PAA, 9；Polypropylene Sour sodium, 4；Crosslinking-polyisobutene grafted maleic sodium salt, 6；Gasoline, 154；Ethyl acetate, 110；Acetone, 66；Golden red Stone-type titanium dioxide, 4；Precipitated calcium carbonate, 33；Talcum powder, 65；Sericite 6；Sulfuration cream, 4；Diatomite, 1；Organic bentonite Profit soil, 2；Ultra-violet stabilizer, 0.5；Antioxidant, 0.08.

Preferably, the fluid sealant component is as follows by weight：

Nitrile rubber, 100；Ethylene propylene diene rubber, 40；Sodium formate, 10；Sodium acetate, 15；PAA, 8；Polypropylene Sour sodium, 3；Crosslinking-polyisobutene grafted maleic sodium salt, 5；Gasoline, 140；Ethyl acetate, 100；Acetone, 60；Golden red Stone-type titanium dioxide, 6；Precipitated calcium carbonate, 35；Talcum powder, 60；Sericite 5；Sulfuration cream, 3；Organobentonite, 2；It is purple Outside line stabilizer, 0.4；Antioxidant, 0.05.

The invention allows for a kind of preparation method of container fluid sealant, comprises the following steps：

S1：Each raw material is weighed by ratio of weight and the number of copies；

S2：Gasoline, ethyl acetate, acetone are mixed to form into mixed solvent；

S3：After by nitrile rubber, ethylene propylene diene rubber mixing, plasticate 2-3 time on plasticator, obtain thing of plasticating；

S4：To in S3 obtain thing of plasticating in sequentially add sodium acetate, sodium formate, PAA, Sodium Polyacrylate, crosslinking- After polyisobutene grafted maleic sodium salt mixing 8-10min, sericite, sulfuration cream, diatomite, ultraviolet are sequentially added steady After determining agent, antioxidant, rutile type titanium white, precipitated calcium carbonate, talcum powder, continue to knead, extrusion, section；

S5：The mixing piece obtained in S4 is added in the mixed solvent obtained into S2, is stirred to whole dissolvings, send three-roller Inside it is ground to exquisiteness uniform, obtains fluid sealant.

From nitrile rubber and ethylene propylene diene rubber as major ingredient, nitrile rubber has the operating temperature range of wide area and good to the present invention Good mechanical property, ethylene propylene diene rubber is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon, with superior resistance to Oxidation, ozone-resistant and erosion-resistant ability, meanwhile, with fabulous vulcanization characteristics, oil absorption and containment, by butyronitrile rubber The compound use of glue and ethylene propylene diene rubber, can be that the addition of other components and the key property of fluid sealant establish good basis.

Formic acid sodium of the present invention, sodium acetate, PAA, Sodium Polyacrylate, crosslinking-polyisobutene grafted maleic sodium salt are answered Addition is closed, the expansion character of fluid sealant can be improved, and can be many from initial bubble rate, swollen expansion rate, swollen ratio, exaggerated conditions Aspect carries out the improvement of expansion character, by the improvement to expansion character, fluid sealant filling effect in weld seam can be caused good, Fluid sealant is extremely difficult to come off.

The rutile type titanium white that the present invention is selected, can play a part of reinforcement, anti-aging, filling in rubber, while making For UV resistant reinforcing agent, used with cooperateing with for ultra-violet stabilizer by antioxidant together with ultra-violet absorber, i.e., first It is shielding action of the resistance to ultraviolet reinforcing agent to ultraviolet, next to that the elimination of antioxidant and ultra-violet stabilizer to remaining ultraviolet, Decomposition of the ultraviolet light to rubber matrix in fluid sealant is significantly reduced, anti-aging effect of the fluid sealant to ultraviolet is enhanced.Separately Outward, antioxidant can effectively suppress the vicinal hydroxyl groups in the broken ring ultra-violet stabilizer of free based products in photooxidation, can be with Ultra-violet stabilizer is set to work more for a long time.

The present invention increased the compatibility of talcum powder and base rubber from the coupling agent modified talcum powder of Aluminate, improve rubber Heat resistance.Talcum powder alternative carbon black carries out reinforcement to rubber matrix, reduces production cost, while playing the work of increased viscosity With.

The present invention carries out being mixed to prepare mixed solvent to replace traditional toluene for using and diformazan from gasoline, ethyl acetate, acetone The aromatic solvents such as benzene, on the one hand reduce environmental pollution and human body murder by poisoning that aromatic solvent brings, on the other hand, due to acetic acid second The solubility parameter of both ester, acetone and hydrogen bond index are high, then coordinate the gasoline of low cost, can cause mixed solvent dissolving power It is strong and cost is reasonable.

Bentonite has hygroscopicity, and 8-15 times of water-swellable is added and meet in rubber water to expand, and plays the work of water suction sealing With further enhancing the sealing property of fluid sealant.

The beneficial effects of the present invention is, by being optimized to component, fluid sealant properties are improve, and it is excellent according to component Change result, whole preparation technology is optimized, in preparation process, reasonable arrangement is carried out to each step, and to raw material Mixing addition is defined, such that it is able to giving full play to the effect of each component and lifting the performance of final fluid sealant；By innovation The use of solvent, reduces the pollution to environment and the potential injury to human body；Combined with ultraviolet radiation stabilizer and antioxidant it is common Effect so that the anti-ultraviolet aging function admirable of colloid；Increase the hygroscopicity of material using bentonite or diatomite, improve glue The sealing of body；Replace carbon black to strengthen matrix using modified talc powder, reduce production cost, and environmental friendliness.

Specific embodiment

The present invention is described in detail with reference to instantiation, it should be appreciated that embodiment is not served only for the explanation present invention, and not It is that, for limiting the invention, any modification made on the basis of the present invention, equivalent etc. are in the protection of the present invention In the range of.

Container fluid sealant disclosed in this invention, the parts by weight of component are as shown in table 1 in each embodiment：

Table 1 is the parts by weight of the Polychloroprene Sealant raw material of each embodiment

	Embodiment 1	Embodiment 2	Embodiment 3
				Nitrile rubber	110	105	100
Ethylene propylene diene rubber	50	45	40
				Sodium formate	15	13	10
Sodium acetate	20	17	15
				PAA	10	9	8

Sodium Polyacrylate	5	4	3
				Crosslinking-polyisobutene grafted maleic sodium salt	8	6	5
Gasoline	168	154	140
				Ethyl acetate	120	110	100
Acetone	72	66	60
				Rutile type titanium white	5	4	6
Precipitated calcium carbonate	30	33	35
				Talcum powder	70	65	60
Sericite	7	6	5
				Sulfuration cream	5	4	3
Diatomite	8	1	/
				Organobentonite	/	2	2
Ultra-violet stabilizer	0.6	0.5	0.4
				Antioxidant	0.1	0.08	0.05

Embodiment 1

It is prepared according to the following steps：

S1：Each raw material is weighed by ratio of weight and the number of copies；

S2：Gasoline, ethyl acetate, acetone are mixed to form into mixed solvent；

S3：After by nitrile rubber, ethylene propylene diene rubber mixing, plasticate on plasticator 3 times, obtain thing of plasticating；

S4：To in S3 obtain thing of plasticating in sequentially add sodium acetate, sodium formate, PAA, Sodium Polyacrylate, crosslinking- After polyisobutene grafted maleic sodium salt mixing 10min, sericite, sulfuration cream, diatomite, UV stable are sequentially added After agent, antioxidant, rutile type titanium white, precipitated calcium carbonate, talcum powder, continue to knead, extrusion, section；

S5：The mixing piece obtained in S4 is added in the mixed solvent obtained into S2, is stirred to whole dissolvings, send three-roller Inside it is ground to exquisiteness uniform, obtains fluid sealant.

Embodiment 2

It is prepared according to the following steps：

S1：Each raw material is weighed by ratio of weight and the number of copies；

S2：Gasoline, ethyl acetate, acetone are mixed to form into mixed solvent；

S3：After by nitrile rubber, ethylene propylene diene rubber mixing, plasticate on plasticator 3 times, obtain thing of plasticating；

S4：To in S3 obtain thing of plasticating in sequentially add sodium acetate, sodium formate, PAA, Sodium Polyacrylate, crosslinking- Polyisobutene grafted maleic sodium salt mixing 9min after, sequentially add sericite, sulfuration cream, diatomite, ultra-violet stabilizer, After antioxidant, rutile type titanium white, precipitated calcium carbonate, talcum powder, continue to knead, extrusion, section；

S5：The mixing piece obtained in S4 is added in the mixed solvent obtained into S2, is stirred to whole dissolvings, send three-roller Inside it is ground to exquisiteness uniform, obtains fluid sealant.

Embodiment 3

It is prepared according to the following steps：

S1：Each raw material is weighed by ratio of weight and the number of copies；

S2：Gasoline, ethyl acetate, acetone are mixed to form into mixed solvent；

S3：After by nitrile rubber, ethylene propylene diene rubber mixing, plasticate on plasticator 2 times, obtain thing of plasticating；

S4：To in S3 obtain thing of plasticating in sequentially add sodium acetate, sodium formate, PAA, Sodium Polyacrylate, crosslinking- After polyisobutene grafted maleic sodium salt mixing 10min, sericite, sulfuration cream, diatomite, UV stable are sequentially added After agent, antioxidant, rutile type titanium white, precipitated calcium carbonate, talcum powder, continue to knead, extrusion, section；

S5：The mixing piece obtained in S4 is added in the mixed solvent obtained into S2, is stirred to whole dissolvings, send three-roller Inside it is ground to exquisiteness uniform, obtains fluid sealant.

Container obtained in the present invention is tested with fluid sealant using GB/T14522-2008 ultraviolet light and agings experimental standard：Adopt With fluorescent UV/condensation cycle test method, light source is UV-B fluorescent tubes, carries out 12 circulations, and each cyclic test condition is： Illumination temperature is 60 DEG C, light application time is 4h, and in the case where wavelength is for the ultra violet lamp of 313nm, irradiation level is 0.71W/m², light After according to end, condensed, condensation temperature is 50 DEG C, the time of condensation is 4h.

Test result shows that the phenomenons such as discoloration, cracking, efflorescence does not occur in the colloid in three embodiments.

In embodiment 1-3, the shear strength and peel strength of the obtained Polychloroprene Sealant of test, performance data is as shown in table 2.

As shown by data in above-mentioned table 2, fluid sealant disclosed in this invention has good adherence, glue-joint strength and expansion character.

Claims (6)

1. a kind of container fluid sealant, it is characterised in that the fluid sealant includes by weight following component：

Nitrile rubber, 100～110；Ethylene propylene diene rubber, 40～50；Sodium formate, 10～15；Sodium acetate, 15～20；Third Olefin(e) acid sodium, 8～10；Sodium Polyacrylate, 3～5；Crosslinking-polyisobutene grafted maleic sodium salt, 5～8；Gasoline, 140～168； Ethyl acetate, 100～120；Acetone, 60～72；Rutile type titanium white, 4～6；Precipitated calcium carbonate, 30～35；Talcum Powder, 60～70；Sericite, 5～7；Sulfuration cream, 3～5；Diatomite, 5～8；Ultra-violet stabilizer, 0.4～0.6；It is anti- Oxidant, 0.05～0.1；Wherein, gasoline, ethyl acetate, acetone keep increasing and decreasing in proportion；The talcum powder is modified for surface Talcum powder, the modifying agent for being used is aluminate coupling agent；The ultra-violet stabilizer be hindered amine as light stabilizer, the antioxygen Agent is Hinered phenols antioxidant.

2. container fluid sealant according to claim 1, it is characterised in that the fluid sealant component is by weight such as Under：

Nitrile rubber, 110；Ethylene propylene diene rubber, 50；Sodium formate, 15；Sodium acetate, 20；PAA, 10；Polypropylene Sour sodium, 5；Crosslinking-polyisobutene grafted maleic sodium salt, 8；Gasoline, 168；Ethyl acetate, 120；Acetone, 72；Golden red Stone-type titanium dioxide, 5；Precipitated calcium carbonate, 30；Talcum powder, 70；Sericite, 7；Sulfuration cream, 5；Diatomite, 8；It is ultraviolet Line stabilization agent, 0.6；Antioxidant, 0.1.

3. container fluid sealant according to claim 1, it is characterised in that by 1:3 weight part ratio, uses organic bentonite Profit soil replaces part or all of diatomite.

4. container fluid sealant according to claim 3, it is characterised in that the fluid sealant component is by weight such as Under：

Nitrile rubber, 105；Ethylene propylene diene rubber, 45；Sodium formate, 13；Sodium acetate, 17；PAA, 9；Polypropylene Sour sodium, 4；Crosslinking-polyisobutene grafted maleic sodium salt, 6；Gasoline, 154；Ethyl acetate, 110；Acetone, 66；Golden red Stone-type titanium dioxide, 4；Precipitated calcium carbonate, 33；Talcum powder, 65；Sericite 6；Sulfuration cream, 4；Diatomite, 1；Organic bentonite Profit soil, 2；Ultra-violet stabilizer, 0.5；Antioxidant, 0.08.

5. container fluid sealant according to claim 3, it is characterised in that the fluid sealant component is by weight such as Under：

Nitrile rubber, 100；Ethylene propylene diene rubber, 40；Sodium formate, 10；Sodium acetate, 15；PAA, 8；Polypropylene Sour sodium, 3；Crosslinking-polyisobutene grafted maleic sodium salt, 5；Gasoline, 140；Ethyl acetate, 100；Acetone, 60；Golden red Stone-type titanium dioxide, 6；Precipitated calcium carbonate, 35；Talcum powder, 60；Sericite 5；Sulfuration cream, 3；Organobentonite, 2；It is purple Outside line stabilizer, 0.4；Antioxidant, 0.05.

6. the preparation method of the container fluid sealant as described in any one of claim 1-5, it is characterised in that including following step Suddenly：

S1：Each raw material is weighed by ratio of weight and the number of copies；

S2：Gasoline, ethyl acetate, acetone are mixed to form into mixed solvent；

S3：After by nitrile rubber, ethylene propylene diene rubber mixing, plasticate 2-3 time on plasticator, obtain thing of plasticating；

S4：To in S3 obtain thing of plasticating in sequentially add sodium acetate, sodium formate, PAA, Sodium Polyacrylate, crosslinking- After polyisobutene grafted maleic sodium salt mixing 8-10min, sericite, sulfuration cream, diatomite, ultraviolet are sequentially added steady After determining agent, antioxidant, rutile type titanium white, precipitated calcium carbonate, talcum powder, continue to knead, extrusion, section；

S5：The mixing piece obtained in S4 is added in the mixed solvent obtained into S2, is stirred to whole dissolvings, send three-roller Inside it is ground to exquisiteness uniform, obtains fluid sealant.