Graphene-containing modified latex as well as preparation method therefor and application thereof

• US 10,941,273 B2
• Filed: 11/07/2016
• Issued: 03/09/2021
• Est. Priority Date: 11/20/2015
• Status: Active Grant

• Current Assignee: Jinan Shengquan Group Share-Holding Company Limited
• Original Assignee: Jinan Shengquan Group Share-Holding Company Limited
• Inventors: Tang, Yilin, Zhang, Jinzhu, Xu, Ripeng, Liu, Ding
• Primary Examiner(s): Chang, Josephine L
• Application Number:
  US15/777,474
• Publication Number:
  US 20180327567A1
• Time in Patent Office: 1,583 Days
• Field of Search: 524440, 524 40
• CPC Class Codes: C01B 32/184 Preparation
• CPC Class Codes: C08K 2003/023 Silicon
• CPC Class Codes: C08K 2003/0812 Aluminium
• CPC Class Codes: C08K 2003/0856 Iron
• CPC Class Codes: C08K 2201/011 Nanostructured additives
• CPC Class Codes: C08K 3/042 Graphene or derivatives, e.g. graphene oxides
• CPC Class Codes: C08K 3/08 Metals
• CPC Class Codes: C08L 7/02 Latex

Abstract

Graphene-containing latex. The latex contains a graphene structure and non-carbon, non-oxygen and non-hydrogen elements. The provided latex is enabled to have multiple performances such as far-infrared performance, antibacterial performance and bacteriostasis by selecting a specific carbon nanostructure compound and by means of collocation and combination of a graphene structure and elements such as Fe, Si and Al; and furthermore, higher far-infrared effect and antibacterial effect can be achieved by controlling a specific addition proportion. The experimental results prove that the far-infrared performance of the latex can reach a maximum value of 0.93, and the bacteriostasis can reach a maximum value of 99%.

Claims

1. A modified latex comprising:

a graphene structure; and

non-carbon non-oxygen non-hydrogen elements, the non-carbon non-oxygen non-hydrogen elements comprising elements of Fe, Si, and Al;

the elements of Fe, Si, and Al in total accounts for 0.0018 wt % to 0.4 wt % of the modified latex;

wherein the graphene structure and the non-carbon non-oxygen non-hydrogen elements are introduced in a form of a carbon nanostructure-containing composite;

wherein the carbon nanostructure-containing composite comprises;

graphene;

amorphous carbon; and

non-carbon non-oxygen non-hydrogen elements, the non-carbon non-oxygen non-hydrogen elements comprising elements of Fe, Si, and Al; and

the content of non-carbon non-oxygen non-hydrogen elements is 0.5 wt % to 6 wt % of the carbon nanostructure-containing composite;

wherein the graphene structure has a thickness of less than or equal to 100 nanometers;

wherein the mass of the carbon nanostructure-containing composite accounts for 3 wt % to 5 wt % of that of the modified latex.

2. The modified latex according to claim 1, wherein the content of carbon element in the carbon nanostructure-containing composite is greater than or equal to 80 wt %.

3. The modified latex according to claim 1, wherein the non- carbon non-oxygen non-hydrogen elements account for 0.3 wt % to 5 wt % of the carbon nanostructure-containing composite.

4. The modified latex according to claim 1, wherein the non-carbon non-oxygen non-hydrogen elements account for 1.5 wt % to 5 wt % of the carbon nanostructure-containing composite.

5. The modified latex according to claim 1, wherein the non-carbon non-oxygen non-hydrogen elements are adsorbed on the surface or inside of carbon nanostructure in a form of any one or more of elementary substance, oxide, or carbide.

6. The modified latex according to claim 1, wherein the method for preparing the carbon nanostructure-containing composite includes:

(1) under the action of a catalyst, catalytically treating a biomass carbon source to obtain a precursor;

(2) under a condition of protective gas, maintaining the precursor at 140°

C. to 180°

C. for 1.5 to 2.5 hours to obtain a first intermediate;

(3) under a condition of protective gas, heating the first intermediate to 350°

C. to 450°

C. and maintaining at that temperature for 3 to 4 hours to obtain a second intermediate;

(4) under a condition of protective gas, heating the second intermediate to 1100°

C. to 1300°

C. and maintaining at that temperature for 2 to 4 hours to obtain a third intermediate; and

(5) subjecting the third intermediate to alkali washing, acid washing and water washing successively to obtain a composite;

the heating rate in step (3) and (4) is 14°

C./min to 18°

C./min.

7. The modified latex according to claim 1, wherein the graphene structure is one or more carbon six-membered ring honeycomb lamellar structures having 1-10 layers.

8. The modified latex according to claim 1, wherein the non- carbon non-oxygen non-hydrogen elements further comprise one or more of P, Ca, Na, Ni, Mn, K, Mg, Cr, S and Co.

9. The modified latex according to claim 8, wherein the total content of non-carbon non-oxygen non-hydrogen elements other than elements of Fe, Si, and Al is less than 0.5 wt % of the latex.

10. The modified latex according to claim 8, wherein the elements of Fe, Si, and Al in total accounts for 0.01 wt % to 0.4 wt % of the modified latex.

11. The modified latex according to claim 1, wherein the graphene structure is introduced in a form of biomass graphene.

12. The modified latex according to claim 11, wherein the biomass is one or more of lignin, cellulose prepared from trees, straws and agricultural and forestry wastes, and a mixture thereof.

13. A latex product comprising the latex of claim 1, wherein the product is a pillow, a mattress, a sofa, a waist support, an insole, a brassiere, a car seat, a condom, a glove, a balloon, a nipple, a bottle, a hand warmer, or a cushion.

14. The latex product of claim 13, wherein the product is a back cushion or a toilet seat cushion.