CN106634706A - Environment-friendly sealant and preparation method thereof - Google Patents

Abstract

The invention discloses an environment-friendly sealant which comprises, by weight, 31-35 parts of butyl rubber, 29-31 parts of natural rubber, 70-84 parts of gasoline, 50-60 parts of ethyl acetate, 30-36 parts of acetone, 3-6 parts of rutile titanium dioxide, 12-14 parts of light calcium carbonate, 50-70 parts of talcum powder, 10-15 parts of stearic acid, 20-23 parts of sericite, 32-38 parts of petroleum resin, 10-13 parts of vulcanized paste, 30-50 parts of infusorial earth, 50-60 parts of tert butyl phenolic resin and coumarone resin, 3-4 parts of magnesium oxide, 0.4-0.6 part of ultraviolet stabilizers and 0.05-0.1 part of antioxidants. The environment-friendly sealant has the advantages that the sealant with high viscosity, denseness, solid content and bonding strength and aging resistance is obtained by optimizing components, usage of harmful substances is reduced, environmental pollution is decreased, and the preparation process is updated according to the optimized components.

Description

A kind of environmentally friendly fluid sealant and preparation method thereof

Technical field

The invention belongs to fluid sealant technical field, more particularly to a kind of environmentally friendly 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..

In container, need to be sealed using fluid sealant at the narrow slit of many part Colaesces, in prior art, mainly adopt To be filled at narrow slit with fluid sealant, then, sealed narrow slit after gelling to be sealed is solid.Current fluid sealant is mainly adopted The aromatic hydrocarbons such as toluene, dimethylbenzene are solvent, and the gas that the volatilization of above-mentioned solvent is produced is harmful, meanwhile, when dress in container When loading is clothing, food, also easily tote polluted.

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 environmentally friendly fluid sealant and preparation method thereof, Properties are good and environmental friendliness.

The present invention is achieved by the following technical solutions, and a kind of environmentally friendly fluid sealant, the fluid sealant is wrapped by weight Include following component：

Butyl rubber, 31～35；Natural rubber, 29～31；Gasoline, 70～84；Ethyl acetate, 50～60；Acetone, 30～ 36；Rutile type titanium white, 3～6；Precipitated calcium carbonate, 12～14；Talcum powder, 50～70；Stearic acid, 10～15；Thin,tough silk Mica 20～23；Petropols, 32～38；Sulfuration cream, 10～13；Diatomite, 30～50；Tert butyl phenolic resin and Gu The grand resin of horse, 50～60；Magnesia, 3～4；Ultra-violet stabilizer, 0.4～0.6；Antioxidant, 0.05～0.1；Wherein, The ratio of weight and number of tert butyl phenolic resin and coumarone indene resin is 2:3, gasoline, ethyl acetate, acetone keep increasing and decreasing in proportion； The talcum powder is surface modified talc powder, and the modifying agent for being used is aluminate coupling agent, and the ultra-violet stabilizer is hindered amine Light stabilizer, the antioxidant is Hinered phenols antioxidant.

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

Butyl rubber, 35；Natural rubber, 31；Gasoline, 84；Ethyl acetate, 60；Acetone, 36；Rutile type titanium white, 6； Precipitated calcium carbonate, 14；Talcum powder, 60；Stearic acid, 15；Sericite 22；Petropols, 32；Sulfuration cream, 10；Diatom Soil, 40；Tert butyl phenolic resin, 24；Coumarone indene resin, 36；Magnesia, 4；Ultra-violet stabilizer, 0.6；It is anti-oxidant Agent, 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：

Butyl rubber, 31；Natural rubber, 29；Gasoline, 70；Ethyl acetate, 50；Acetone, 30；Rutile type titanium white, 3；Precipitated calcium carbonate, 12；Talcum powder, 50；Stearic acid, 10；Sericite 20；Petropols, 36；Sulfuration cream, 11； Diatomite, 10；Organobentonite, 10；Tert butyl phenolic resin, 20；Coumarone indene resin, 30；Magnesia, 3；Ultraviolet Stabilizer, 0.4；Antioxidant, 0.05.

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

Butyl rubber, 33；Natural rubber, 30；Gasoline, 77；Ethyl acetate, 55；Acetone, 33；Rutile type titanium white, 5；Precipitated calcium carbonate, 13；Talcum powder, 70；Stearic acid, 13；Sericite 21；Petropols, 34；Sulfuration cream, 13； Organobentonite, 16；Tert butyl phenolic resin, 22；Coumarone indene resin, 33；Magnesia, 3.6；Ultra-violet stabilizer, 0.5； Antioxidant, 0.08.

The invention allows for a kind of preparation method of environmentally friendly fluid sealant, 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：Tert butyl phenolic resin is dissolved in the mixed solvent of on the basis of tert butyl phenolic resin weight portion 35% S2 acquisitions, On the basis of tert butyl phenolic resin weight portion 5% magnesia is subsequently adding, 5-8 hour is stirred at room temperature, chelated Reaction, obtains thick chelate；

S4：By butyl rubber, natural rubber mixing and plasticate 3-5 time on a mill, obtain thing of plasticating；

S5：Magnesia, stearic acid, sulfuration cream, diatomite, the thin,tough silk of surplus are sequentially added into the thing of plasticating obtained in S4 Mica, rutile type titanium white, precipitated calcium carbonate, talcum powder, ultra-violet stabilizer, antioxidant, extrude after being kneaded, Section；

S6：The thick chelate obtained in the mixing piece, step S3 that obtain in S5, coumarone indene resin, Petropols are added Enter and stir in remaining mixed solvent to whole dissolvings, carry out 10-15min grindings, obtain fluid sealant.

The rutile type titanium white that the present invention is selected, can play a part of reinforcement, anti-aging, filling, together in neoprene Shi Zuowei UV resistant reinforcing agents, are used, i.e., by antioxidant together with ultra-violet absorber with cooperateing with for ultra-violet stabilizer First it is shielding action of the resistance to ultraviolet reinforcing agent to ultraviolet, next to that antioxidant and ultra-violet stabilizer are to remaining ultraviolet Eliminate, significantly reduce decomposition of the ultraviolet light to rubber matrix in fluid sealant, enhance fluid sealant and the anti-ageing of ultraviolet is turned into With.In addition, antioxidant can effectively suppress the vicinal hydroxyl groups in the broken ring ultra-violet stabilizer of the free based products in photooxidation, Ultra-violet stabilizer can be made 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.

The present invention, as wetting agent, can improve the mobile performance of fluid sealant from stearic acid, such that it is able to preferably flow into narrow slit In, meanwhile, stearic acid can be used cooperatively with precipitated calcium carbonate, insoluble calcium soap can be formed in fluid sealant, so as to enter one The processing wettability of step lift-off seal glue, and can enable fluid sealant that there is good collapse resistance.

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；By using tert butyl phenolic resin and coumarone tree Fat, improves the heat resistance and adherence of fluid sealant；Using ultra-violet absorber, combined with ultraviolet radiation stabilizer and antioxidant Collective effect so that the anti-ultraviolet aging function admirable of colloid；Increase the hygroscopicity of material using bentonite or diatomite, carry The sealing of high colloid；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.

Environmentally friendly 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
				Butyl rubber	35	31	33
Natural rubber	31	29	30
				Gasoline	84	70	77
Ethyl acetate	60	50	55
				Acetone	36	30	33

Rutile type titanium white	6	3	5
				Precipitated calcium carbonate	14	12	13
Talcum powder	60	50	70
				Stearic acid	15	10	13
Sericite	22	20	21
				Petropols	32	36	34
Sulfuration cream	10	11	13
				Diatomite	40	10	/
Organobentonite	/	10	16
				Ultra-violet stabilizer	0.6	0.4	0.5
Antioxidant	0.1	0.05	0.08
				Tert butyl phenolic resin	24	20	22
Coumarone indene resin	36	30	33
				Magnesia	4	3	3.6

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：Tert butyl phenolic resin is dissolved in the mixed solvent of on the basis of tert butyl phenolic resin weight portion 35% S2 acquisitions, On the basis of tert butyl phenolic resin weight portion 5% magnesia is subsequently adding, 8 hours are stirred at room temperature, carry out chelating instead Should, obtain thick chelate；

S4：Butyl rubber, natural rubber are mixed and plasticated on a mill 5 times, thing of plasticating is obtained；

S5：Magnesia, stearic acid, sulfuration cream, diatomite, the thin,tough silk of surplus are sequentially added into the thing of plasticating obtained in S4 Mica, rutile type titanium white, precipitated calcium carbonate, talcum powder, ultra-violet stabilizer, antioxidant, extrude after being kneaded, Section；

S6：The thick chelate obtained in the mixing piece, step S3 that obtain in S5, coumarone indene resin, Petropols are added Enter and stir in remaining mixed solvent to whole dissolvings, carry out 10min grindings, obtain 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：Tert butyl phenolic resin is dissolved in the mixed solvent of on the basis of tert butyl phenolic resin weight portion 35% S2 acquisitions, On the basis of tert butyl phenolic resin weight portion 5% magnesia is subsequently adding, 6 hours are stirred at room temperature, carry out chelating instead Should, obtain thick chelate；

S4：Butyl rubber, natural rubber are mixed and plasticated on a mill 3 times, thing of plasticating is obtained；

S5：Magnesia, stearic acid, sulfuration cream, diatomite, the thin,tough silk of surplus are sequentially added into the thing of plasticating obtained in S4 Mica, rutile type titanium white, precipitated calcium carbonate, talcum powder, ultra-violet stabilizer, antioxidant, extrude after being kneaded, Section；

S6：The thick chelate obtained in the mixing piece, step S3 that obtain in S5, coumarone indene resin, Petropols are added Enter and stir in remaining mixed solvent to whole dissolvings, carry out 12min grindings, obtain 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：Tert butyl phenolic resin is dissolved in the mixed solvent of on the basis of tert butyl phenolic resin weight portion 35% S2 acquisitions, On the basis of tert butyl phenolic resin weight portion 5% magnesia is subsequently adding, 7 hours are stirred at room temperature, carry out chelating instead Should, obtain thick chelate；

S4：Butyl rubber, natural rubber are mixed and plasticated on a mill 4 times, thing of plasticating is obtained；

S5：Magnesia, stearic acid, sulfuration cream, diatomite, the thin,tough silk of surplus are sequentially added into the thing of plasticating obtained in S4 Mica, rutile type titanium white, precipitated calcium carbonate, talcum powder, ultra-violet stabilizer, antioxidant, extrude after being kneaded, Section；

S6：The thick chelate obtained in the mixing piece, step S3 that obtain in S5, coumarone indene resin, Petropols are added Enter and stir in remaining mixed solvent to whole dissolvings, carry out 15min grindings, obtain fluid sealant.

Environmentally friendly fluid sealant obtained in the present invention is surveyed using GB/T14522-2008 ultraviolet light and agings experimental standard Examination：：Using fluorescent UV/condensation cycle test method, light source is UV-B fluorescent tubes, carries out 12 circulations, each circulation examination The condition of testing 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, after illumination terminates, being condensed, condensation temperature is 50 DEG C, and 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 and glue-joint strength.

Claims (6)

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

Butyl rubber, 31～35；Natural rubber, 29～31；Gasoline, 70～84；Ethyl acetate, 50～60；Acetone, 30～ 36；Rutile type titanium white, 3～6；Precipitated calcium carbonate, 12～14；Talcum powder, 50～70；Stearic acid, 10～15；Thin,tough silk Mica 20～23；Petropols, 32～38；Sulfuration cream, 10～13；Diatomite, 30～50；Tert butyl phenolic resin and Gu The grand resin of horse, 50～60；Magnesia, 3～4；Ultra-violet stabilizer, 0.4～0.6；Antioxidant, 0.05～0.1；Wherein, The ratio of weight and number of tert butyl phenolic resin and coumarone indene resin is 2:3, gasoline, ethyl acetate, acetone keep increasing and decreasing in proportion； The talcum powder is surface modified talc powder, and the modifying agent for being used is aluminate coupling agent, and the ultra-violet stabilizer is hindered amine Light stabilizer, the antioxidant is Hinered phenols antioxidant.

2. environmentally friendly fluid sealant according to claim 1, it is characterised in that the fluid sealant component is by weight It is as follows：

Butyl rubber, 35；Natural rubber, 31；Gasoline, 84；Ethyl acetate, 60；Acetone, 36；Rutile type titanium white, 6；Precipitated calcium carbonate, 14；Talcum powder, 60；Stearic acid, 15；Sericite 22；Petropols, 32；Sulfuration cream, 10； Diatomite, 40；Tert butyl phenolic resin, 24；Coumarone indene resin, 36；Magnesia, 4；Ultra-violet stabilizer, 0.6；It is anti- Oxidant, 0.1.

3. environmentally friendly fluid sealant according to claim 1, it is characterised in that by 1:3 weight part ratio, with organic Bentonite replaces part or all of diatomite.

4. environmentally friendly fluid sealant according to claim 3, it is characterised in that the fluid sealant component is by weight It is as follows：

Butyl rubber, 31；Natural rubber, 29；Gasoline, 70；Ethyl acetate, 50；Acetone, 30；Rutile type titanium white, 3；Precipitated calcium carbonate, 12；Talcum powder, 50；Stearic acid, 10；Sericite 20；Petropols, 36；Sulfuration cream, 11； Diatomite, 10；Organobentonite, 10；Tert butyl phenolic resin, 20；Coumarone indene resin, 30；Magnesia, 3；Ultraviolet Stabilizer, 0.4；Antioxidant, 0.05.

5. environmentally friendly fluid sealant according to claim 3, it is characterised in that the fluid sealant component is by weight It is as follows：

Butyl rubber, 33；Natural rubber, 30；Gasoline, 77；Ethyl acetate, 55；Acetone, 33；Rutile type titanium white, 5；Precipitated calcium carbonate, 13；Talcum powder, 70；Stearic acid, 13；Sericite 21；Petropols, 34；Sulfuration cream, 13； Organobentonite, 16；Tert butyl phenolic resin, 22；Coumarone indene resin, 33；Magnesia, 3.6；Ultra-violet stabilizer, 0.5； Antioxidant, 0.08.

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

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：Tert butyl phenolic resin is dissolved in the mixed solvent of on the basis of tert butyl phenolic resin weight portion 35% S2 acquisitions, On the basis of tert butyl phenolic resin weight portion 5% magnesia is subsequently adding, 5-8 hour is stirred at room temperature, chelated Reaction, obtains thick chelate；

S4：By butyl rubber, natural rubber mixing and plasticate 3-5 time on a mill, obtain thing of plasticating；

S5：Magnesia, stearic acid, sulfuration cream, diatomite, the thin,tough silk of surplus are sequentially added into the thing of plasticating obtained in S4 Mica, rutile type titanium white, precipitated calcium carbonate, talcum powder, ultra-violet stabilizer, antioxidant, extrude after being kneaded, Section；

S6：The thick chelate obtained in the mixing piece, step S3 that obtain in S5, coumarone indene resin, Petropols are added Enter and stir in remaining mixed solvent to whole dissolvings, carry out 10-15min grindings, obtain fluid sealant.