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Formaldehyde free binding composition, for mineral fibres

A bonding composition, the technology of the composition, applied in the directions such as glucan adhesives, coatings, glass manufacturing equipment, etc., can solve the problems of unfavorable industrial production and high production costs

Active Publication Date: 2015-02-11
STM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production cost of the composition is high, which is unfavorable from the viewpoint of industrial production

Method used

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  • Formaldehyde free binding composition, for mineral fibres
  • Formaldehyde free binding composition, for mineral fibres
  • Formaldehyde free binding composition, for mineral fibres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Example 1: Polymerization rate of the composition of the invention as binder in the preparation of fibrous material.

[0079] The rate of polymerization of the following compositions of the invention was determined by measuring the so-called "gel time". Gel time is a known experimental variable used by those skilled in the art enabling the measurement of the rate of polymerization of aqueous bonding compositions. Said technique consists, inter alia, of pouring a quantity of an aqueous bonding composition on a thermostatically controlled heated surface (usually a plate) and measuring the time required to form the first filaments of said composition.

[0080] In this example, the composition of the present invention was determined by pouring a quantitative amount (in milliliters) of the aqueous bonding composition on a hot plate at a temperature of about 150° C. and measuring the time taken to form the first filament using a spatula. gel time.

[0081] The gel time is a...

Embodiment 2

[0099] Embodiment 2 (comparative example)

[0100] The experiment for calculating the gel time as in Example 1 was carried out with ammonium sulfate as polymerization / crosslinking agent. The results are summarized in Table 2.

[0101] Table 2: Gel time values ​​for compositions in Example 1 using ammonium sulfate (3%) instead of ammonium sulfamate (3%)

[0102] combination

Deposition volume and plate temperature

Polymerization time (gel time)

A1

2ml(150℃)

34 seconds

B1

2ml(150℃)

35 seconds

C1

2ml(150℃)

30 seconds

[0103] A1-C1: Compositions corresponding to compositions A-C of Example 1, wherein ammonium sulfamate (3%) was replaced by ammonium sulfate (3%).

[0104] It can be easily deduced from Tables 1 and 2 above that the composition of the present invention makes it possible to obtain significantly higher rates of polymerization (for the same amount of polymerization / crosslinking agent used), which r...

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Abstract

The present invention relates in general terms to a formaldehyde-free aqueous binding composition (binder) comprising ammonium sulfamate, and to a fibrous mineral material obtained by polymerization of said composition. Advantageously, the present composition makes it possible to obtain rapid polymerization times during the formation of fibrous mineral material, while nonetheless ensuring the thermal and mechanical stability thereof.

Description

technical field [0001] The present invention relates generally to a formaldehyde-free aqueous binding composition (binder) for mineral fibres, comprising ammonium sulfamate and at least one monosaccharide. Background technique [0002] Fibrous mineral materials, such as rock wool or glass wool, which are widely used as heat and sound insulation materials in civil or industrial construction, are known in the art. These materials are formed by bonding mineral fibers with a bonding composition (binder), usually aqueous; the material contains a polymerizing / crosslinking agent, is thermosetting and is capable of firmly joining the fibers by high temperature thermomechanical treatment. In this respect, the process for the preparation of these fibrous mineral materials generally comprises the steps of first producing so-called "free" (i.e. unbonded) mineral fibers and then thermally impregnating said free fibers with a bonding composition, due to contact and Under the action of hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/00C03C25/24C03C25/26C03C25/321
CPCC09D5/00C03B37/005C08K3/28C08K5/42C09J105/02C03C25/321C03C25/24C03C25/26D04H1/64
Inventor 马尔科·拉·格雷卡罗伯托·马西尼
Owner STM TECH
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