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Composite adhesive specially for heat insulating polystyrene outer-wall board

A technology of external wall insulation and polystyrene, applied in the direction of hydrocarbon copolymer adhesives, adhesive types, etc., can solve the problems of high cost, adhesive aging, shortening the service life of adhesives, etc., and achieve Improve the hardness, improve the strength of the binder, and improve the effect of bonding performance

Inactive Publication Date: 2003-03-19
上海丰慧节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the binders commonly used all over the world are polymer dispersions, which mainly include the following three types: 1) natural rubber emulsion; 2) synthetic rubber emulsion; 3) thermoplastic resin emulsion; Among them, the dispersions that can be used to prepare polystyrene insulation boards for external wall insulation systems include polyvinyl acetate copolymers, styrene-acrylic systems, and acrylic systems. The above-mentioned substances have certain weather resistance and aging resistance. However, due to The binder itself is a pure organic substance. After being used for a period of time, the organic substance is prone to chemical reactions such as cracking and degradation, which will cause the binder to age, thereby shortening the service life of the binder. Synthetic binder with pure organic substances, the cost is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1. Preparation of 30% silica sol

[0063] Dilute water glass to prepare 15% NaSiO 3The aqueous solution is pressurized to pass through the cation exchange resin, the pH value is controlled below 5.5, and then passed through the anion exchange resin to adjust the pH value between 8-10, and the NaSiO 3 The aqueous solution is heated to 80°C, filtered and evaporated, and when the density is 1.18-1.20 as measured by a density meter, a 30% white silica sol can be obtained.

[0064] 2. Preparation of Silicone Modified Styrene-Acrylic Emulsion (1) Prepare the raw materials with the following weight: 1. Pre-emulsion A:

[0065] Water (DW) 50kg

[0066] Emulsifier (NP-40 produced by Henkel, Germany) 2.04 kg

[0067] Butyl acrylate (BA) 129.6 kg

[0068] Styrene (ST) 47.2 kg

[0069] Acrylamide (AM) 3.6 kg B:

[0070] Water (DW) 100kg

[0071] Emulsifier (NP-40 produced by Henkel, Germany) 4.08 kg

[0072] Butyl acrylate (BA) 259.3 kg

[0...

Embodiment 2

[0110] 1. Preparation of 30% silica sol

[0111] Concrete preparation method is with embodiment 1.

[0112] 2. Preparation of Silicone Modified Styrene-Acrylic Emulsion (1) Prepare the raw materials with the following weight: 1. Pre-emulsion A:

[0113] Water (DW) 50kg

[0114] Emulsifier (NP-40 produced by Henkel, Germany) 3 kg

[0115] Butyl acrylate (BA) 110 kg

[0116] Styrene (ST) 57 kg

[0117] Acrylamide (AM) 4.4 kg B:

[0118] Water (DW) 100kg

[0119] Emulsifier (NP-40 produced by Henkel, Germany) 10 kg

[0120] Butyl acrylate (BA) 230 kg

[0121] Styrene (ST) 80 kg

[0122] Acrylamide (AM) 9.8 kg

[0123] Organosilane (Hong Kong Dow Corning Company) 15 kg 2. Kettle material

[0124] Water 259.3 kg

[0125] 0.7 kg of emulsifier (NP-40 produced by Henkel, Germany) Three, initial initiator

[0126] Potassium persulfate (APS) 1.8 kg

[0127] 10 kilograms of water 4. Add the initiator dropwise

[01...

Embodiment 3

[0148] 1. Preparation of 30% silica sol

[0149] Concrete preparation method is with embodiment 1.

[0150] 2. Preparation of Silicone Modified Styrene-Acrylic Emulsion (1) Prepare the raw materials with the following weight: 1. Pre-emulsion A:

[0151] Water (DW) 50kg

[0152] Emulsifier (NP-40 produced by Henkel, Germany) 1.5 kg

[0153] Butyl acrylate (BA) 115 kg

[0154] Styrene (ST) 40 kg

[0155] Acrylamide (AM) 2.8 kg B:

[0156] Water (DW) 100kg

[0157] Emulsifier (NP-40 produced by Henkel, Germany) 3.5 kg

[0158] Butyl acrylate (BA) 280 kg

[0159] Styrene (ST) 100 kg

[0160] Acrylamide (AM) 9.8 kg

[0161] Organosilane (Hong Kong Dow Corning Company) 6 kg 2. Kettle material

[0162] Water 259.3 kg

[0163] 0.7 kg of emulsifier (NP-40 produced by Henkel, Germany) Three, initial initiator

[0164] Potassium persulfate (APS) 2.2 kg

[0165] 10 kilograms of water 4. Add the initiator dropwise

...

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Abstract

The composite adhesive is prepared with styrene and acrylic acid copolymer emulsion, which is inorganic silica gel and organosilicon modified and has low vitrification point and high adhesion, as main adhesive component and through adding quartzite, asbestos and other reinforcing material and some assistants. The composite adhesive has high adhesion effect, high adhesion strength, good antiaging performance, high hardness and high water resistance.

Description

technical field [0001] The invention relates to adhesives, in particular to an organic-inorganic composite adhesive specially used for external thermal insulation of polystyrene insulation boards. Background technique [0002] At present, the binders commonly used all over the world are polymer dispersions, which mainly include the following three types: 1) natural rubber emulsion; 2) synthetic rubber emulsion; 3) thermoplastic resin emulsion; Among them, the dispersions that can be used to prepare polystyrene insulation boards for external wall insulation systems include polyvinyl acetate copolymers, styrene-acrylic systems, and acrylic systems. The above-mentioned substances have certain weather resistance and aging resistance. However, due to The binder itself is a pure organic substance. After being used for a period of time, the organic substance is prone to chemical reactions such as cracking and degradation, which will cause the binder to age, thereby shortening the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J125/08
Inventor 贾铭琳
Owner 上海丰慧节能环保科技有限公司
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