CN110240824B

CN110240824B - Preparation method of composite wax composition

Info

Publication number: CN110240824B
Application number: CN201810211647.7A
Authority: CN
Inventors: 许益生; 吴哥德; 王琪宇
Original assignee: Quzhou Zhongtong Chemical Co ltd
Current assignee: Quzhou Zhongtong Chemical Co ltd
Priority date: 2018-03-09
Filing date: 2018-03-09
Publication date: 2021-08-17
Anticipated expiration: 2038-03-09
Also published as: CN110240824A

Abstract

The invention relates to a preparation method of a composite wax composition. Adding Brazilian high-density oxidized polyethylene wax, acrylamide dimethyl taurine and VP copolymer, dibutyltin dilaurate, tris [ N, N-bis (trimethylsilane) amine ] europium, 1, 1-dimethyl sila-11-crown ether-4 and toluene into a reaction kettle, uniformly mixing, reacting, cooling to room temperature after the reaction is finished, and filtering, washing and drying a product to obtain the modified high-density oxidized polyethylene wax product. And mixing the obtained modified high-density oxidized polyethylene wax with PTFE powder, and grinding and crushing the mixture in a grinding mill to obtain the composite wax composition.

Description

Preparation method of composite wax composition

Technical Field

The invention relates to a preparation method of mixed wax, in particular to a preparation method of a composite wax composition.

Technical Field

In paint systems, the wax plays an important role, the mechanism of dispersion of the individual particles of wax in the paint base, the wax particles exuded from the surface of the film avoids contact of the paint film surface with corrosive media, there is little damage to the coating surface when other objects slip off the surface from which the wax exudes, and the wax migrates towards the coating surface because of its plasticity, helping to fill the pores caused by solvent evaporation or resinous components during curing, helping to form a glossy paint film on the coating surface.

CN 106433384A discloses a paint protection wax for protecting various paints, which is prepared from the following components in parts by weight: 10-20 parts of kaolin, 10-20 parts of diatomite, 20-30 parts of epoxy resin, 10-15 parts of paraffin, 10-15 parts of ozokerite, 20-30 parts of an environment-friendly solvent, 3-5 parts of an anti-ultraviolet agent and 1-3 parts of a preservative. The preparation method of the paint surface protecting wax mainly comprises weighing, premixing and mixing.

CN 101724308A discloses a paint additive, which is composed of anti-yellowing resin, lavender, rosemary, folium artemisiae argyi, p-cresol, dicyclopentadiene butylated reactant and polysiloxane; wherein the weight ratio of each component is as follows: 10-12 parts of anti-yellowing resin, 8-10 parts of lavender, 8-10 parts of rosemary, 15-20 parts of folium artemisiae argyi, 20-30 parts of p-cresol and dicyclopentadiene butylated reactant and 5-8 parts of polysiloxane. Is used for preventing the paint from being oxidized and protecting the paint surface.

In the existing additive technology for protecting paint surfaces, components are simply mixed and then applied to the surface of a paint film or added into the paint film, and because different components and paint films have poor compatibility, the components are easy to fall off from the surface of the paint film or excessively precipitate in the paint film to lose effectiveness, so that a product which has strong bonding property with the paint film and durable protection effect is required in the market to achieve the purposes of protecting the paint film and beautifying the appearance.

Disclosure of Invention

In view of the above problems, the present invention provides a method for modifying a composition of high-density oxidized polyethylene wax and polytetrafluoroethylene.

Step 1, modification of high-density oxidized polyethylene wax

Adding 100 parts by weight of high-density oxidized polyethylene wax, 0.2-1.2 parts by weight of acrylamide dimethyl taurine and VP copolymer, 0.001-0.01 part by weight of dibutyltin dilaurate, 0.0001-0.001 part by weight of tris [ N, N-bis (trimethylsilane) amine ] europium, 0.5-1.5 parts by weight of 1, 1-dimethyl sila-11-crown-4 and 400 parts by weight of toluene 200-containing organic amine into a reaction kettle, uniformly mixing, heating to 70-85 ℃, reacting for 30-60min, cooling to room temperature after finishing, filtering, washing and drying a product to obtain the modified high-density oxidized polyethylene wax;

step 2. preparation of the mixture

And (3) mixing the modified high-density oxidized polyethylene wax obtained in the step (1) with PTFE and poly (1-decene), and grinding and crushing in a grinding mill to obtain the composite wax composition.

The mass ratio of the modified high-density oxidized polyethylene wax to the PTFE and the poly (1-decene) of the composition product is 100: 15-5: 0.1-1.

The high-density oxidized polyethylene wax, the acrylamide dimethyl taurine and VP copolymer, the dibutyltin dilaurate, the 1, 1-dimethyl silicon hetero-11-crown ether-4, the toluene, the PTFE and the poly (1-decene) are all commercially available products.

The invention has the following beneficial effects:

acrylamide dimethyl taurine and VP copolymer, dibutyltin dilaurate, tris [ N, N-bis (trimethylsilane) amine ] europium and a part of hydroxyl-bearing lipids contained in Brazil high-density oxidized polyethylene wax are combined in an esterification mode, and the modified high-density oxidized polyethylene wax has better compatibility with polytetrafluoroethylene when being added into paint vehicle when forming a composition with four groups of polyethylene, and can be basically uniformly dispersed in the paint vehicle system according to the proportion to play a role; the composition product is used in a polar solvent system coating, has greatly improved smoothness of the coating, has good bonding performance with a paint vehicle, and can exert the effect for a long time.

Detailed Description

The embodiments described herein are merely illustrative and are not intended to limit the present invention.

Example 1

Step 1, modification of high-density oxidized polyethylene wax

Adding 100g of Brazilian high-density oxidized polyethylene wax, 0.7g of acrylamide dimethyl taurine and VP copolymer, 0.005g of dibutyltin dilaurate, 0.0005g of tris [ N, N-bis (trimethylsilane) amine ] europium, 1g of 1, 1-dimethyl sila-11-crown ether-4 and 300g of toluene into a reaction kettle, uniformly mixing, heating to 67 ℃, reacting for 45min, cooling to room temperature after the reaction is finished, filtering, washing with water, and drying to obtain a modified high-density oxidized polyethylene wax product;

step 2. preparation of the mixture

And (2) mixing 100g of the modified high-density oxidized polyethylene wax prepared in the step (1) with 10g of PTFE powder and 0.4g of poly (1-decene), and grinding and crushing in a grinding mill to obtain the composite wax composition.

Example 2

Step 1, modification of high-density oxidized polyethylene wax

Adding 100g of Brazilian high-density oxidized polyethylene wax, 0.2g of acrylamide dimethyl taurine and VP copolymer, 0.001g of dibutyltin dilaurate, 0.0001g of tris [ N, N-bis (trimethylsilane) amine ] europium, 0.5g of 1, 1-dimethyl sila-11-crown ether-4 and 200g of toluene into a reaction kettle, uniformly mixing, heating to 70 ℃, reacting for 30min, cooling to room temperature after the reaction is finished, filtering, washing with water and drying the product to obtain a modified high-density oxidized polyethylene wax product;

step 2. preparation of the mixture

And (2) mixing 100g of the modified high-density oxidized polyethylene wax prepared in the step (1) with 15g of PTFE powder and 0.1g of poly (1-decene), and grinding and crushing in a grinding mill to obtain the composite wax composition.

Example 3

Step 1, modification of high-density oxidized polyethylene wax

Adding 100g of Brazilian high-density oxidized polyethylene wax, 1.2g of acrylamide dimethyl taurine and VP copolymer, 0.01g of dibutyltin dilaurate, 0.001g of tri [ N, N-bis (trimethylsilane) amine ] europium, 1.5g of 1, 1-dimethyl sila-11-crown ether-4 and 400g of toluene into a reaction kettle, uniformly mixing, heating to 85 ℃, reacting for 60min, cooling to room temperature after the reaction is finished, filtering, washing with water and drying the product to obtain a modified high-density oxidized polyethylene wax product;

step 2. preparation of the mixture

And (2) mixing 95g of the modified high-density oxidized polyethylene wax prepared in the step (1) with 5g of PTFE powder and 1g of poly (1-decene), and grinding and crushing in a grinding mill to obtain the composite wax composition.

Comparative example 1

The same procedure as in example 1 was repeated except that the acrylamide dimethyltaurine and VP copolymer were not added.

Comparative example 2

Dibutyltin dilaurate was not added, and the other conditions were the same as in example 1.

Comparative example 3

Tri [ N, N-bis (trimethylsilanyl) amine ] europium was not added, and the other conditions were the same as in example 1.

Comparative example 4

The same procedure as in example 1 was repeated except that 1, 1-dimethylsiloxa-11-crown-4 was not added.

Comparative example 5

Poly (1-decene) was not added, and the other conditions were the same as in example 1.

Comparative example 6

The high-density oxidized polyethylene wax is directly blended with PTFE without modification, and other steps are the same as those of example 1.

Example 4

The products produced in examples 1 to 3 and comparative examples 1 to 4 were dispersed and mixed uniformly into NC varnish in an amount of 2% by mass of NB varnish, and then drawn onto a glass plate using a frame coater with a paint film thickness of 60 μm (two plates were prepared for each product produced), and after the paint film was completely dried, the gloss was examined; and after the other panel was completely dried, its blocking properties were examined at a 500g loading weight, rated from 1 (no blocking) to 5 (blocking area over 50% of the area of the bottom side of the load).

Product numbering	Gloss (60 degree angle)	Sliding motion	Adhesion rating
				Example 1	21	0.15	Level 1
Example 2	36	0.19	Level 1
				Example 3	19	0.10	Level 1
Comparative example 1	61	0.26	Stage 2
				Comparative example 2	53	0.24	Stage 2
Comparative example 3	57	0.24	Stage 2
				Comparative example 4	59	0.27	Stage 2
Comparative example 5	53	0.23	Stage 2
				Comparative example 6	107	0.37	Stage 2
No addition of NC varnish	149	0.49	Grade 3

Claims

1. A method for preparing a composite wax composition, characterized in that the preparation steps comprise: mixing the prepared modified high-density oxidized polyethylene wax with PTFE and poly (1-decene), and grinding and crushing in a grinding mill to obtain a composite wax composition;

the preparation method of the modified high-density oxidized polyethylene wax comprises the following steps: according to the weight portion, 100 portions of high-density oxidized polyethylene wax, 0.2-1.2 portions of acrylamide dimethyl taurine and VP copolymer, 0.001-0.01 portion of dibutyltin dilaurate, 0.0001-0.001 portion of tris [ N, N-bis (trimethylsilane) amine ] europium, 0.5-1.5 portions of 1, 1-dimethyl sila-11-crown ether-4 and 400 portions of toluene 200-ion are added into a reaction kettle, the mixture is uniformly mixed, heated to 70-85 ℃ for reaction for 30-60min, cooled to room temperature after the reaction is finished, and the product is filtered, washed by water and dried to obtain the modified high-density oxidized polyethylene wax.

2. The method of claim 1, wherein the wax composition is prepared by: the mass ratio of the modified high-density oxidized polyethylene wax to the PTFE and the poly (1-decene) of the composition product is 100: 15-5: 0.1-1.

3. The method of claim 1, wherein the wax composition is prepared by: the preparation method of the modified high-density oxidized polyethylene wax comprises the following steps:

100g of Brazilian high-density oxidized polyethylene wax, 0.7g of acrylamide dimethyl taurine and VP copolymer, 0.005g of dibutyltin dilaurate, 0.0005g of tris [ N, N-bis (trimethylsilane) amine ] europium, 1g of 1, 1-dimethyl sila-11-crown ether-4 and 300g of toluene are added into a reaction kettle, the mixture is uniformly mixed and heated to 67 ℃ for reaction for 45min, the reaction product is cooled to room temperature after the reaction is finished, and the product is filtered, washed by water and dried to obtain the modified high-density oxidized polyethylene wax product.

4. The method of claim 1, wherein the wax composition is prepared by: the preparation method of the modified high-density oxidized polyethylene wax comprises the following steps:

100g of Brazilian high-density oxidized polyethylene wax, 0.2g of acrylamide dimethyl taurine and VP copolymer, 0.001g of dibutyltin dilaurate, 0.0001g of tris [ N, N-bis (trimethylsilane) amine ] europium, 0.5g of 1, 1-dimethyl sila-11-crown ether-4 and 200g of toluene are added into a reaction kettle, the mixture is uniformly mixed and heated to 70 ℃, the reaction is carried out for 30min, the mixture is cooled to room temperature after the reaction is finished, and the product is filtered, washed by water and dried to obtain the modified high-density oxidized polyethylene wax product.

5. The method of claim 1, wherein the wax composition is prepared by: the preparation method of the modified high-density oxidized polyethylene wax comprises the following steps: 100g of Brazilian high-density oxidized polyethylene wax, 1.2g of acrylamide dimethyl taurine and VP copolymer, 0.01g of dibutyltin dilaurate, 0.001g of tris [ N, N-bis (trimethylsilane) amine ] europium, 1.5g of 1, 1-dimethyl sila-11-crown ether-4 and 400g of toluene are added into a reaction kettle, the mixture is uniformly mixed and heated to 85 ℃, the reaction is carried out for 60min, the mixture is cooled to room temperature after the reaction is finished, and the product is filtered, washed by water and dried to obtain the modified high-density oxidized polyethylene wax product.