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A kind of composite adhesive and its application

A composite adhesive and adhesive technology, applied in the direction of adhesive, adhesive type, starch adhesive, etc., can solve the problems of false adhesive bonding strength, low, winter production impact, etc.

Active Publication Date: 2022-06-03
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing water-based polyurethane glue (cold glue) basically requires the ambient temperature to be above 15°C to have a good bonding effect, which will affect production in winter, especially for cross-cloth facing materials with large bonding meshes. False sticking phenomenon often occurs (adhesive strength is not high, when it is torn by hand, the facing material is separated from the face paper of the gypsum board, not the face paper of the gypsum board and the core of the base gypsum board)

Method used

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  • A kind of composite adhesive and its application
  • A kind of composite adhesive and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The water-based polyurethane adhesive is a high-solid aliphatic water-based polyurethane adhesive, purchased from Chongqing Hantuo Technology Co., Ltd., with the brand name HT-6011; the solid content is 47.1%, the pH value is 6.2, and the viscosity (20°C) is 3750 mPa.s.

[0037] The glutinous rice glue is an adhesive produced from glutinous corn modified starch, purchased from Shanghai Dongxing Environmental Protection Ink Co., Ltd.; the solid content is 36.1%, the pH value is 6.6, and the viscosity (20° C.) is 181800 mPa.s.

[0038] Perform the following operations at ambient temperatures of 5°C, 15°C, 25°C, and 35°C:

[0039] Weigh the two adhesives according to the mass ratio of glutinous rice glue and water-based polyurethane adhesive as 1:10, first add 10 vol.% of the total amount of the two glues into the water-based polyurethane adhesive, mix evenly, and then add the glutinous rice glue and mix evenly. Then, spray the mixed glue on the gypsum board with a glue gu...

Embodiment 2

[0043] The source of each raw material and the preparation process in this example are the same as those in Example 1.

[0044] Perform the following operations at ambient temperatures of 5°C, 15°C, 25°C, and 35°C:

[0045] According to the mass ratio of glutinous rice glue and water-based polyurethane adhesive of 2:8, two kinds of adhesives were weighed. First, 12 vol.% of the total amount of the two glues was added to the water-based polyurethane adhesive. After mixing evenly, the glutinous rice glue was added and mixed evenly. Then, spray the mixed glue on the gypsum board with a glue gun, and the amount of adhesive is 65g / m 2 , and after sticking the decorative film, it enters the vacuum forming machine, the temperature is 145 ℃, the duration is 148 seconds, and the pressure is -0.04MPa.

[0046] Separate the decorative film from the gypsum board at the corresponding preparation temperature. At 5°C, 15°C, 25°C and 35°C, the decorative film is not separated from the protec...

Embodiment 3

[0048] The source of each raw material and the preparation process in this example are the same as those in Example 1.

[0049] Perform the following operations at ambient temperatures of 5°C, 15°C, 25°C, and 35°C:

[0050] According to the mass ratio of glutinous rice glue and water-based polyurethane adhesive of 3:7, two kinds of adhesives were weighed, and 14 vol.% of the total amount of the two glues was first added to the water-based polyurethane adhesive, and after mixing evenly, the glutinous rice glue was added and mixed evenly. Then, spray the mixed glue on the gypsum board with a glue gun, and the amount of adhesive is 58g / m 2 , and after sticking the decorative film, it enters the vacuum forming machine, the temperature is 160 ℃, the duration is 165 seconds, and the pressure is -0.04 MPa.

[0051] Separate the decorative film from the gypsum board at the corresponding preparation temperature. At 5°C, 15°C, 25°C and 35°C, the decorative film is not separated from the ...

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Abstract

The application discloses a composite adhesive and application thereof, the composite adhesive includes glutinous rice glue and water-based polyurethane adhesive; in the composite adhesive, the mass ratio of the glutinous rice glue and the water-based polyurethane adhesive is (1:9) to ( 4:6); the adhesive can be used to bond plasterboard and facing materials. Existing adhesives basically require the ambient temperature to be above 15°C to have a good bonding effect. However, the composite adhesive provided by the present application can be used at an ambient temperature below 15° C., which solves the problem that winter production is affected by low temperature environments.

Description

technical field [0001] This article relates to but not limited to the field of building decoration construction, especially but not limited to a composite adhesive and its application. Background technique [0002] Under the guidance of China's vigorous promotion of the strategic policy of prefabricated construction, local governments have increased their efforts to promote construction, and clearly require hardcover handover for the affordable housing and public rental housing invested and constructed by the state, which brings a variety of indoor dry-work finishing boards. Larger market development space. [0003] Universal board is a kind of decorative board that is covered with decorative materials on the surface of gypsum board. It can realize the integrated installation of prefabricated interior wall decoration and decoration on site, and effectively avoid the easy cracking and peeling pollution caused by on-site wallpapering and painting. etc. phenomenon. The produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J103/02C09J103/04
CPCC09J175/04C08L3/02C08L3/04
Inventor 王霞白纪新毛安尚珺虓陈红霞冉秀云
Owner BEIJING NEW BUILDING MATERIALS PLC