Bi-component polyurethane adhesive as well as preparation method and application thereof

A two-component polyurethane and adhesive technology, which is applied in the field of sealants, can solve the problems that the focal spot of installation and detection cannot meet the requirements, it is difficult to adjust the relative position of the lens and the mirror case, and the temperature changes greatly between day and night.

Inactive Publication Date: 2011-10-12
GUANGDONG PUSTAR SEALED RAYON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if the drilled rivets are used for rigid fixation, the temperature of the day and night changes greatly, especially in the desert environment, which is prone to problems such as lens breakage; the double-sided adhesive tape method is used, and it is difficult to adjust the gap between the lens and the mirror case after the lens is laid. The relative position of the installation detection focal spot cannot meet the requirements, and it is not convenient for construction operability

Method used

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  • Bi-component polyurethane adhesive as well as preparation method and application thereof
  • Bi-component polyurethane adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A two-component polyurethane adhesive, the adhesive includes A component and B component, and after the A component and the B component are uniformly mixed in a mass ratio of 1.2:1, the two-component polyurethane adhesive is obtained;

[0090] A and B components are composed of the following raw materials in mass percentage:

[0091] A component:

[0092] Polyurethane prepolymer 30%

[0093] Didecyl phthalate 30%

[0094] Talc and ceramics 40%;

[0095] Wherein, the polyurethane prepolymer in A component is made up of the raw material of following mass percent:

[0096] Didecyl phthalate 28%

[0097] Two-functional polypropylene ether polyol 30%

[0098] Trifunctional Polypropylene Ether Polyol 30%

[0099] Hexamethylene diisocyanate 12%;

[0100] B component:

[0101] Two-functional polypropylene ether polyol 20%

[0102] Talc and Ceramic 60%

[0103] Didecyl phthalate 15%

[0104] Fumed silica 2.1%

[0105] Zinc isooctanoate 1%

[0106] UV absorber UV-327...

Embodiment 2

[0116] A preparation method of the two-component polyurethane adhesive of embodiment 1, comprises the following steps:

[0117] (1) Preparation of component A: According to the formula, polyurethane prepolymer, didecyl phthalate and talcum powder are mixed evenly to prepare component A;

[0118] Among them, the preparation of polyurethane prepolymer in component A: add didecyl phthalate, difunctional polypropylene ether polyol, trifunctional polypropylene ether polyol and hexamethylene diisocyanate to the synthetic In the reaction kettle, under the conditions of a temperature of 110°C and a vacuum degree greater than 0.095Mpa, water was removed for 3 hours, and the water content of the liquid material was measured to be less than 300ppm, and then the temperature was lowered to 65°C and reacted for 5 hours to obtain the polyurethane prepolymerized body;

[0119] (2) Preparation of component B: According to the formula quantity, bifunctional polypropylene ether polyol with a mo...

Embodiment 3

[0122] The two-component polyurethane adhesive in Example 1 was applied to the bonding between the concentrating solar mirror shell and the lens. The two-component polyurethane adhesive used in Example 1 can be used for the bonding between the large-area concentrating solar mirror shell and the lens, and has the characteristics of long pot life, good flexibility, and good thermal and oxygen aging resistance.

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Abstract

The invention relates to a bi-component polyurethane adhesive as well as a preparation method and application thereof. The bi-component polyurethane adhesive comprises a component A and a component B, wherein the component A comprises a polyurethane prepolymer, a plasticizer and an inorganic filling material, and the polyurethane prepolymer comprises a plasticizer, two-functionality polyether polyol, three-functionality polyether polyol and diisocyanate; and the component B comprises an activated hydrogen curing agent, an inorganic filling material, a plasticizer, a thixotropic agent, a catalyst, an ultraviolet light stabilizer, a thermal oxygen stabilizer and an organosilicon adhesion accelerator. The bi-component polyurethane adhesive is prepared by evenly mixing the component A and the component B in a mass ratio of (0.8-1.2):(0.8-1.2). The bi-component polyurethane adhesive is applied to bonding between a mirror shell and lens of a spotlight type solar reflector; compared with the pavement mode in the prior art, in the invention, construction is easy, and the positions of the lens and the mirror shell are easy to regulate; and under the condition that variation of temperature is large, the bi-component polyurethane adhesive has good flexibility so that the lens have small possibility of cracking.

Description

technical field [0001] The invention relates to the technical field of sealants, in particular to a two-component polyurethane adhesive and its preparation method and application. Background technique [0002] In the prior art, the way of paving between the mirror shell and the lens of the concentrating solar mirror is usually fixed by drilling rivets or double-sided adhesive tape. [0003] However, if the drilled rivets are used for rigid fixation, the temperature of the day and night changes greatly, especially in the desert environment, which is prone to problems such as lens breakage; the double-sided adhesive tape method is used, and it is difficult to adjust the gap between the lens and the mirror case after the lens is laid. The relative position of the installation and detection focal spot cannot meet the requirements, and it is not convenient for construction operability. [0004] Therefore, in view of the deficiencies in the prior art, it is particularly important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J11/04C08G18/48
Inventor 王好军丁云香王宇旋任绍志
Owner GUANGDONG PUSTAR SEALED RAYON CO LTD
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