Preparation method of hot-melt reaction type adhesive for composite material

A composite material and reactive technology, applied in adhesive types, polyurea/polyurethane adhesives, adhesives, etc., can solve the problems of poor environmental performance of materials, poor operating environment, and various varieties, and achieve excellent weather resistance. The effect of good operational stability and high composite fastness

Inactive Publication Date: 2012-07-04
BEIJING COMENS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are problems in adhesives for composite materials, mainly due to the poor environmental performance of materials, and the mixing and matching of two components is required in the process of operation to bond, resulting in the operating environment of adhesives for hot-melt reactive composite materials. Defective, with a wide variety, adding unnecessary difficulties to the operation

Method used

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  • Preparation method of hot-melt reaction type adhesive for composite material
  • Preparation method of hot-melt reaction type adhesive for composite material
  • Preparation method of hot-melt reaction type adhesive for composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 of the present invention provides a method for preparing an adhesive for hot-melt reactive composite materials. The prepared adhesive has high initial adhesion fastness and stable performance, and is suitable for various composite substrates to prepare environmentally friendly composite materials. , the preparation method specifically includes:

[0018] Preparation of polyester polyol:

[0019] a. Esterification:

[0020] 10-20 parts by mass of dimethyl terephthalate, 25-35 parts by mass of ethylene glycol, 15-30 parts by mass of adipic acid, 5-10 parts by mass of sebacic acid, 25-35 parts by mass of Add 1,4-butanediol into the polyester synthesis kettle, heat up to 210-240°C, react for 6-8 hours, and the esterification is completed;

[0021] In the above-mentioned esterification step, keep the distillate of the distillate of the polyester synthesis tank at 1 to 3 parts by mass / hour; after the esterification reaction is completed, take a sample to measure...

Embodiment 2

[0032] This embodiment 2 provides a preparation method of an adhesive for hot-melt reactive composite materials. The prepared adhesive has high initial adhesion fastness and stable performance, and is suitable for various composite substrates to prepare hot-melt reactive environmental protection adhesives. Composite material, the preparation method specifically includes:

[0033] (1) Preparation of polyester polyol:

[0034] Get each raw material according to the following ratio:

[0035]

[0036] The preparation method of polyester polyol:

[0037] a. Primary esterification:

[0038] 15 parts by mass of dimethyl terephthalate, 25 parts by mass of ethylene glycol, 6 parts by mass of adipic acid, 6 parts by mass of sebacic acid, and 28 parts by mass of 1,4-butanediol were added Put it into the polyester synthesis kettle, raise the temperature to 220°C, react for 8 hours, and complete the esterification; during the esterification process, pay attention to observe the disti...

Embodiment 3

[0048] Embodiment 2 of the present invention provides a method for preparing an adhesive for hot-melt reactive composite materials. The prepared adhesive has high initial adhesion fastness and stable performance, and is suitable for various composite substrates to prepare hot-melt reactive adhesives. The environmentally friendly composite material, the preparation method specifically includes:

[0049] (1) Preparation of polyester polyol:

[0050]Get each raw material by following mass ratio:

[0051]

[0052] The method for preparing polyester polyol in this example is basically the same as the method for preparing polyester polyol given in Example 2. Please refer to Example 2, and will not repeat the description here.

[0053] (2) Compounding:

[0054] Get each raw material according to the following ratio:

[0055]

[0056] Preparation:

[0057] The polyester polyol prepared by the above steps (1) of 35 parts by mass and the polytetrahydrofuran diol of 40 parts by...

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Abstract

The invention discloses a preparation method of a hot-melt reaction type adhesive for a composite material, belonging to the field of adhesive preparation. The method comprises the following steps of: preparing polyester polyol: esterifying and poly-condensing dimethyl terephthalate, glycol, hexane diacid, decanedioic acid and 1,4-butanediol under a certain condition to obtain polyester polyol; and mixing the prepared polyester polyol and polyether glycol, heating and formulating the prepared polyester polyol and polyether glycol by using MDI (diphenyl-methane-diisocyanate), tackifying resin and organosilicon coupling agent in proportion to obtain the hot-melt reaction type adhesive. Through the structural design of polyester segmer and the introduction of a polyether glycol segmer unit, the produced adhesive has very high combined strength and wide technical applicability for various composite base materials; and various composite materials can be produced through the adhesive. The composite materials made of the adhesive have excellent weather-resistant performance and excellent outdoor applicability.

Description

technical field [0001] The invention relates to the field of preparation of adhesives, in particular to a method for preparing adhesives for hot-melt reaction type composite materials. Background technique [0002] At present, through the use of adhesives to combine substances with different properties, it becomes a new type of composite material with unique properties and low cost, which is generally called hot-melt reactive composite material. In this type of composite materials, the inner layer materials mainly come from wood fiber composite materials, PVC extrusion materials and aluminum alloy materials, and the range of plastic substrates composited with them is quite wide, mainly plastic resin films, such as various thicknesses, various Various colors of composite polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc. This type of composite profile has the advantages of environmental protection, excellent processing performance and low cost. This type ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08C09J175/06
Inventor 冯祎沈峰
Owner BEIJING COMENS NEW MATERIALS
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