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Bicomponent carbamide polyaspartate hard adhesive and use method and application thereof

A kind of aspartic acid ester, two-component technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of strict construction requirements, poor construction performance, low construction efficiency, etc., and achieve good UV aging resistance, resistance to sunlight, and the effect of firm bonding of aggregates

Active Publication Date: 2017-09-29
深圳市飞扬特化新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly three kinds of materials used as this kind of adhesive, one is a two-component polyurethane adhesive based on polyester, polyether polyol and polymeric MDI curing agent, and the other is ordinary solvent-free self-leveling epoxy adhesive. There is also a pre-polymerized active acrylic resin, an MMA adhesive that initiates polymerization through peroxide, but these three adhesives have some problems in actual use, and their use is limited.
Although polyurethane adhesives have high strength and good heat resistance, they are widely used, but because polymerized MDI is used as a curing agent, the material has poor UV aging resistance and a short service life. Rolling a layer of UV-resistant topcoat as a protective layer increases the difficulty of construction; the UV aging resistance of epoxy materials is worse than that of polyurethane and is more brittle, and it is easy to cause cracking and damage in low temperature environments; MMA adhesives have good weather resistance. The service life is long, but there is a problem of poor construction. Since the reaction is free radical chain growth, the reaction speed is fast and the adjustability is poor, which is very easy to cause gelation and scrapping. The construction requirements are strict and the construction efficiency is low. MMA monomer is used as the active material. Thinner, strong odor and high toxicity, far less widely used than polyurethane and epoxy

Method used

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  • Bicomponent carbamide polyaspartate hard adhesive and use method and application thereof
  • Bicomponent carbamide polyaspartate hard adhesive and use method and application thereof
  • Bicomponent carbamide polyaspartate hard adhesive and use method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 This example discloses a two-component polyaspartate urea rigid adhesive, the adhesive components are as follows:

[0025] A component formula:

[0026] 90.2 parts by weight of N,N'-(methylene di-4,1-cyclohexanediyl) diaspartic acid tetraethyl ester;

[0027]

[0028]

[0029] Component B is equal to component A, including trimer curing agent Bayer 3900, HMDI modified curing agent and IPDI modified curing agent, and the weight ratio of the three is 22:38:40.

[0030] Among them, the HMDI modified curing agent is synthesized by adding 100g of HMDI, dropwise adding 75g of PCL500, controlling the temperature at 80°C for 4hrs, then raising the temperature to 90°C for 4hrs, and detecting the NCO content: 11.1% and discharging.

[0031] The IPDI modified curing agent is 100g of IPDI, and 225g of PPG1000 is added dropwise to react until the NCO content: 5.8% is discharged.

[0032] This embodiment also discloses the use method of the two-component polyasparti...

Embodiment 2

[0034] Example 2 This example discloses a two-component polyaspartate urea rigid adhesive, the adhesive components are as follows:

[0035] A component formula:

[0036] 90.2 parts by weight of N,N'-(methylene di-4,1-cyclohexanediyl) diaspartic acid tetrabutyl ester;

[0037]

[0038] Component B is equal to component A, including trimer curing agent Bayer 3900 and HMDI modified curing agent, the weight ratio of the two is 22:78;

[0039] The HMDI modified curing agent is synthesized by adding 100g of HMDI dropwise with 100g of PPG2000 and 60g of PPG400 under temperature control until the NCO content is 6.2%.

[0040] This embodiment also discloses the use method of the two-component polyaspartic ester urea rigid adhesive, and the steps of the method are as follows: mix the A component and the B component according to the corresponding parts by weight Stir evenly, trowel and apply on the asphalt surface with a thickness of 1-1.5mm, and then quickly spread the wear-resista...

Embodiment 3

[0042] Example 3 This example discloses a two-component polyaspartate urea rigid adhesive, the adhesive components are as follows:

[0043] A component formula:

[0044] 80 parts by weight of N,N'-(methylene bis-(1-methyl,-4,1-cyclohexanediyl)) diaspartic acid tetraethyl ester;

[0045]

[0046] The same amount of component B and component A, including trimer curing agent Bayer 3900 and HMDI modified curing agent, the weight ratio of the two is 10:90;

[0047] The HMDI modified curing agent is synthesized by adding 100g of HMDI dropwise with 100g of PPG2000 and 60g of PPG400 under temperature control until the NCO content is 15%.

[0048] This embodiment also discloses the use method of the two-component polyaspartic ester urea rigid adhesive, and the steps of the method are as follows: mix the A component and the B component according to the corresponding parts by weight Stir evenly, trowel and apply on the asphalt surface with a thickness of 1-1.5mm, and then quickly sp...

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Abstract

The invention belongs to the field of preparation of adhesives and relates to a bicomponent carbamide polyaspartate hard adhesive and a use method and application thereof. The adhesive is prepared from a main agent, i.e., a component A and a curing agent, i.e., a component B, wherein the component A is prepared from the ingredients in parts by weight: 80-95 parts of polyaspartate, 0.1-0.5 part of substrate humectant, 2-5 parts of oxazolidine water absorbent, 5-10 parts of plasticizer and 0.1-0.5 part of antifoamer; the component B and the component A are equal in equivalent proportioning ratio; the curing agent is prepared from an HDI trimer and a hydroxyl resin modified curing agent which are in the weight ratio of (10 to 30): (70 to 90). According to the bicomponent carbamide polyaspartate hard adhesive and the use method and application thereof, asphalt substrates and inorganic antiskidding aggregates can be excellently bound, and meanwhile, the problem that the existing polyurethane and epoxy materials are poor in ultraviolet aging resistance is solved; the bicomponent carbamide polyaspartate hard adhesive has good ultraviolet aging resistance; meanwhile, aspartate resin and this kind of curing agents are relatively high in curing rate, so that sufficient operating time and fast curing are ensured, and problems, temporary closure and opening of roads are solved.

Description

technical field [0001] The invention belongs to the field of adhesive preparation, and in particular relates to a two-component polyaspartate urea hard adhesive and its application method, and its application to colored anti-slip road surfaces as anti-slip colored sand, ceramic particles and foundation Adhesives for concrete or asphalt bases. Background technique [0002] The colored anti-slip pavement is mainly used in road environments that require high friction deceleration and anti-slip, such as bus stops, sharp turns on the road, and up and down bridge ramps. The main method is to first spread a layer of adhesive with a thickness of about 1-2mm on the road surface, and then immediately sprinkle a layer of ceramic or other hard aggregates with a size of 2-5mm. After the adhesive is naturally cured, the aggregate is fixed and integrated with the road, relying on the aggregate with large particles raised on the surface to increase the coefficient of friction. [0003] At...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/02C08G18/32
CPCC08G18/3821C09J175/02
Inventor 薛隽
Owner 深圳市飞扬特化新材料有限公司
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