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Silane-modified polyether sealant and preparation method therefor

A silane-modified polyether and sealant technology, which is applied in polyether adhesives, chemical instruments and methods, adhesives, etc., can solve the problems of unfavorable human health, environmental protection, and odor generation, and achieve a wide range of adhesion, The effect of firm bonding and good elasticity

Inactive Publication Date: 2015-12-02
深圳市隆邦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this silane-modified polyether sealant has certain anti-yellowing and anti-aging properties, but because its components contain methyl tributylketoxime silane, vinyl tributylketoxime silane, dimethyl di Butanone oxime silane, divinyl dibutylketoxime silane or tetrabutylketoxime silane and one or more oxime silanes, so this sealant will release ketone oxime volatile during curing That is, this sealant will produce peculiar smell during use, which is not environmentally friendly and harmful to human health

Method used

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  • Silane-modified polyether sealant and preparation method therefor
  • Silane-modified polyether sealant and preparation method therefor
  • Silane-modified polyether sealant and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 Show the preparation method of the first embodiment of the present invention silane modified polyether sealant, including:

[0031] Step S1, weighing.

[0032] Weigh 20Kg of silane-modified polyether resin, 15Kg of polypropylene glycol PPG-3000, 50Kg of nano-calcium carbonate, 12.5Kg of active calcium carbonate, bis(2,2,6,6-tetramethyl-4-piperidinyl)decane Diacid ester is (Tinuvin770) 0.2Kg, vinyltrimethoxysilane (KH171) 1Kg, aminoethylaminopropyltrimethoxysilane (KH792) 1Kg, chelated tin 0.3Kg.

[0033] Step S2, mixing ingredients.

[0034] Put the weighed silane-modified polyether resin, polypropylene glycol PPG-3000, nano-calcium carbonate, activated calcium carbonate, and Tinuvin770 into the mixer, and stir at high speed to heat up the material.

[0035] The use of silane-modified polyether resin as the base resin solves the problem of the decline in elasticity of traditional silicone sealants after aging. The main chain of silane-modified polyether res...

Embodiment 2

[0044] figure 2 The preparation method of the silane-modified polyether sealant of the second embodiment of the present invention is shown, including:

[0045] Step S1, weighing.

[0046] Weigh 20Kg of silane-modified polyether resin, 15Kg of polypropylene glycol PPG-3000, 40Kg of nano-calcium carbonate, 23.5Kg of active calcium carbonate, bis(2,2,6,6-tetramethyl-4-piperidinyl)decane Diacid ester (Tinuvin770) 0.2Kg, vinyl trimethoxysilane (KH171) 0.5Kg, aminoethylaminopropyl trimethoxysilane (KH792) 0.5Kg, chelated tin 0.3Kg.

[0047] Step S2, mixing ingredients.

[0048] Put the weighed silane-modified polyether resin, polypropylene glycol PPG-3000, nano-calcium carbonate, activated calcium carbonate, and Tinuvin770 into the mixer, and stir at high speed to heat up the material.

[0049] Step S3, dehydration.

[0050] When the material temperature rose to 110°C, vacuum dehydration was started for 2 hours to reduce the moisture content of the material to 800ppm.

[0051]...

Embodiment 3

[0056] In this embodiment, the preparation method of the silane-modified polyether sealant is roughly the same as the above-mentioned embodiment 2, and the specific steps are as follows:

[0057] Step S1, weighing.

[0058] Weigh 20Kg of silane-modified polyether resin, 20Kg of polypropylene glycol PPG-3000, 40Kg of nano-calcium carbonate, 18.5Kg of active calcium carbonate, bis(2,2,6,6-tetramethyl-4-piperidinyl)decane Diacid ester (Tinuvin770) 0.2Kg, vinyl trimethoxysilane (KH171) 0.5Kg, aminoethylaminopropyl trimethoxysilane (KH792) 0.5Kg, chelated tin 0.3Kg.

[0059] Step S2, mixing ingredients.

[0060] Put the weighed silane-modified polyether resin, polypropylene glycol PPG-3000, nano-calcium carbonate, activated calcium carbonate, and Tinuvin770 into the mixer, and stir at high speed to heat up the material.

[0061] Step S3, dehydration.

[0062] When the material temperature rose to 110°C, vacuum dehydration was started for 2 hours to reduce the moisture content of...

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Abstract

The present invention discloses silane-modified polyether sealant. The sealant is prepared by mixing the following raw materials in proportion by weight: 20-30% of silane-modified polyether prepolymer, 10-30% of a plasticizer, 50-70% of reinforcing incremental powder, 0.1-0.5% of a light stabilizer, 0.5-1% of a dehydrating agent, 0.5-1% of of an adhesion promoter and 0.1-0.5% of a catalyst. The sealant provided by the present invention is cured after contacting moisture under the action of the catalyst, simple in operation, cured quickly,and is tasteless, nontoxic, green, safe and environmentally friendly. Meanwhile, the sealant can realize strong bonding and ensure that wood floor will not warp or deform after long-period use. The sealant contains no moisture and actively isolates a back plate from invasion of ground moisture. Therefore, the sealant is an ideal adhesive sealing material in floor bonding.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a sealant and a preparation method thereof, in particular to a silane-modified polyether sealant and a preparation method thereof. Background technique [0002] Neutral silicone sealants are usually used for bonding, sealing, seams, and waterproofing in home decoration flooring. Conventional neutral silicone sealants contain a small amount of solvents and isocyanates. During the process, ketoximes and other small molecule volatile compounds (VOCs) will be released, and odors will also be produced. [0003] For example, the Chinese invention patent with the patent number of 200910066244.9 discloses a neutral transparent silicone structural sealant, which is composed of the following components by weight: hydroxyl-terminated polydimethylsiloxane 80-120, Plasticizer 10-80, cross-linking agent 5-15, coupling agent 0.3-5, catalyst 0.005-0.1, silicon dioxide 30-100, anti-yellowing agent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J171/00C09J171/08C09J11/04C09J11/06C09K3/10
Inventor 陈金明
Owner 深圳市隆邦新材料科技有限公司
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