Additive for spunbond nonwoven geotextile and geotextile

Abstract

The present disclosure provides an additive for a spunbond nonwoven geotextile and a geotextile. The additive for a spunbond nonwoven geotextile includes titanium dioxide, tris(2,4- di-tert-butylphenyl)phosphite, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, N,N'-ethylenebis(stearamide), zinc stearate, and hard acid ester. The additive can be added during a process of preparing a geotextile with polyethylene terephthalate. The additive can effectively improve the aging resistance of a light-weight geotextile fabric. When the existing geotextiles are used in a construction process, it is necessary to take activity-maintaining measures such as covering and light avoiding. When used outdoors, the geotextile prepared by the present disclosure does not require light-avoiding protection measures, which saves a lot of manpower, materials, and financial resources. 20 24 22 01 08 26 S ep 2 02 4 A B S T R A C T T h e p r e s e n t d i s c l o s u r e p r o v i d e s a n a d d i t i v e f o r a s p u n b o n d n o n w o v e n g e o t e x t i l e a n d a g e o t e x t i l e . T h e a d d i t i v e f o r a s p u n b o n d n o n w o v e n g e o t e x t i l e i n c l u d e s t i t a n i u m d i o x i d e , t r i s ( 2 , 4 - S e p 2 0 2 4 2 2 0 1 0 8 2 6 2 0 2 4 d i - t e r t - b u t y l p h e n y l ) p h o s p h i t e , t e t r a k i s ( 3 , 5 - d i - t e r t - b u t y l - 4 - h y d r o x y ) p h e n y l p r o p a n o i c a c i d p e n t a e r y t h r i t o l e s t e r , N , N ' - e t h y l e n e b i s ( s t e a r a m i d e ) , z i n c s t e a r a t e , a n d h a r d a c i d e s t e r . T h e a d d i t i v e c a n b e a d d e d d u r i n g a p r o c e s s o f p r e p a r i n g a g e o t e x t i l e w i t h p o l y e t h y l e n e t e r e p h t h a l a t e . T h e a d d i t i v e c a n e f f e c t i v e l y i m p r o v e t h e a g i n g r e s i s t a n c e o f a l i g h t - w e i g h t g e o t e x t i l e f a b r i c . W h e n t h e e x i s t i n g g e o t e x t i l e s a r e u s e d i n a c o n s t r u c t i o n p r o c e s s , i t i s n e c e s s a r y t o t a k e a c t i v i t y - m a i n t a i n i n g m e a s u r e s s u c h a s c o v e r i n g a n d l i g h t a v o i d i n g . W h e n u s e d o u t d o o r s , t h e g e o t e x t i l e p r e p a r e d b y t h e p r e s e n t d i s c l o s u r e d o e s n o t r e q u i r e l i g h t - a v o i d i n g p r o t e c t i o n m e a s u r e s , w h i c h s a v e s a l o t o f m a n p o w e r , m a t e r i a l s , a n d f i n a n c i a l r e s o u r c e s . A B S T R A C T S e p 2 0 2 4 2 2 0 1 0 8 2 6 2 0 2 4

Description

TECHNICAL FIELD The present disclosure relates to the field of geotextile raw materials, and in particular to an additive for a spunbond nonwoven geotextile and a geotextile. BACKGROUND Polyester spunbond nonwoven geotextiles, also known as polyester filament spunbond needle-punched nonwoven geotextiles, are mainly used in infrastructure projects such as highways, railways, bridges, tunnels, landfills, water conservancy projects, mines, ash dams, land reclamation, airport runways, and retaining walls to play the roles of reinforcement, filtration, anti filtration, seperation, or the like (hereinafter referred to as geotextiles). Due to long-term outdoor use of geotextiles, resistance to aging of geotextiles greatly affects the service performance and application range of products. Thus, resistance to aging is an important performance indicator for geotextile products. For example, it is stipulated in the Australia road engineering specification MRTS27 that, after geotextiles for road construction are exposed to an ultraviolet (UV) aging-resistance test instrument for 672 h, a strength retention rate should be higher than or equal to 50%. A large number of products in the prior art cannot meet the requirement in the above specification during use. SUMMARY In order to solve the above-mentioned technical problems, the present disclosure provides an additive for a spunbond nonwoven geotextile. The additive can be added to polyethylene terephthalate to prepare a geotextile with strong aging resistance. Further, the present disclosure needs to provide a spunbond nonwoven geotextile. Further, the present disclosure needs to provide a preparation method of the spunbond nonwoven geotextile. Technical solutions of the present disclosure are as follows: An additive for a spunbond nonwoven geotextile is provided, where the additive is added during a process of preparing a geotextile with polyethylene terephthalate, and the additive includes: titanium dioxide, tris(2,4-di-tert-butylphenyl)phosphite, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, N,N'-ethylenebis(stearamide), zinc stearate, 1 2024220108   25 Jun 2026 and stearic acid ester. The additive for a spunbond nonwoven geotextile includes the following components in parts by weight: the titanium dioxide: 7 to 300 parts; the tris(2,4-di-tert-butylphenyl)phosphite: 7 to 36 parts; the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester: 4 to 24 parts; the N,N'-ethylenebis(stearamide): 4 to 24 parts; the zinc stearate: 1 to 8 parts; and the stearic acid ester: 8 to 48 parts. Preferably, the additive for a spunbond nonwoven geotextile includes the following components in parts by weight: the titanium dioxide: 100 parts; the tris(2,4-di-tert-butylphenyl)phosphite: 12 parts; the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester: 8 parts; the N,N'-ethylenebis(stearamide): 8 parts; the zinc stearate: 2.7 parts; and the stearic acid ester: 16 parts. A content of the additive for a spunbond nonwoven geotextile in the spunbond nonwoven geotextile is 0.94% to 4.4%. A spunbond nonwoven geotextile is provided, including the following components: Disclosed herein is a spunbond nonwoven geotextile, comprising the following components in parts by weight: the polyethylene terephthalate: 9,560 to 9,906 parts; the titanium dioxide: 70 to 300 parts; the tris(2,4-di-tert-butylphenyl)phosphite: 7 to 36 parts; the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester: 4 to 24 2024220108   25 Jun 2026 parts; the N,N'-ethylenebis(stearamide): 4 to 24 parts; the zinc stearate: 1 to 8 parts; and the stearic acid ester: 8 to 48 parts. polyethylene terephthalate, titanium dioxide, tris(2,4-di-tert-butylphenyl)phosphite, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid    pentaerythritol ester, N,N'- ethylenebis(stearamide), zinc stearate, and stearic acid ester. Preferably, the spunbond nonwoven geotextile includes the following components in parts by weight: the polyethylene terephthalate: 9,560 to 9,906 parts; the titanium dioxide: 7 to 300 parts; the tris(2,4-di-tert-butylphenyl)phosphite: 7 to 36 parts; the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester: 4 to 24 parts; the N,N'-ethylenebis(stearamide): 4 to 24 parts; the zinc stearate: 1 to 8 parts; and the stearic acid ester: 8 to 48 parts. Preferably, a content of an additive for the spunbond nonwoven geotextile that is composed of the titanium dioxide, the tris(2,4-di-tert-butylphenyl)phosphite, the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, the N,N'-ethylenebis(stearamide), the zinc stearate, and the stearic acid ester in the spunbond nonwoven geotextile is 0.94% to 4.4%. Preferably, the spunbond nonwoven geotextile includes the following components in parts by weight: the polyethylene terephthalate: 9,853.3 parts; the titanium dioxide: 100 parts; the tris(2,4-di-tert-butylphenyl)phosphite: 12 parts; the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester: 8 parts; the N,N'-ethylenebis(stearamide): 8 parts; 2024220108   25 Jun 2026 the zinc stearate: 2.7 parts; and the stearic acid ester: 16 parts. An intrinsic viscosity of the polyethylene terephthalate is 0.68 dL / g to 0.73 dL / g, and a test standard for the intrinsic viscosity is GB / T 14189-2015. A preparation method of the spunbond nonwoven geotextile is provided, including: mixing the titanium dioxide, the tris(2,4-di-tert-butylphenyl)phosphite, the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, the N,N'-ethylenebis(stearamide), the zinc stearate, and the stearic acid ester with polyethylene terephthalate chips in the proportions, melting, spinning, cooling, netting, and needle-punching to produce the spunbond nonwoven geotextile; or during a production process of the polyethylene terephthalate chips, adding an additive composed of the titanium dioxide, the tris(2,4-di-tert-butylphenyl)phosphite, the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester,the N,N'-ethylenebis(stearamide), the zinc stearate, and the stearic acid ester to produce the polyethylene terephthalate chips directly as a single raw material, melting, spinning, cooling, netting, and needle-punching to produce the spunbond nonwoven geotextile. Compared with the prior art, the additive for a spunbond nonwoven geotextile provided by the present disclosure includes titanium dioxide, tris(2,4-di-tert-butylphenyl)phosphite, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid    pentaerythritol     ester,N,N'- ethylenebis(stearamide), zinc stearate, and stearic acid ester. The additive can be added during a process of preparing a geotextile with polyethylene terephthalate. The additive can effectively improve the aging resistance of a light-weight geotextile fabric. When the existing geotextiles are used in a construction process, it is necessary to take activity-maintaining measures such as covering and light avoiding. When used outdoors, the geotextile prepared by the present disclosure does not require light-avoiding protection measures, which saves a lot of manpower, materials, and financial resources. DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the objectives, features, and advantages of the present disclosure obvious and easy to understand, the technical solutions in the examples of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the examples of the present disclosure. Obviously, the described examples are only some rather than 2024220108   25 Jun 2026 all of the examples of the present disclosure. All other examples obtained by those of ordinary skill in the art based on the examples of the present disclosure without creative efforts should fall within the protection scope of the present disclosure. The technical solutions of the present disclosure are further illustrated below in conjunction with accompanying drawings and specific implementations. Sources of the materials adopted in the examples are as follows: Polyethylene terephthalate: semi-dull polyester chips, model: SD500, Hengli Petrochemical, Sinopec, intrinsic viscosity: 0.680 dL / g, a test standard: GB / T 14189-2015. Titanium dioxide: commercially available. Tris(2,4-di-tert-butylphenyl)phosphite: commercially available. Tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol  ester: commercially available. N,N'-ethylenebis(stearamide): commercially available. Zinc stearate: commercially available. Stearic acid ester: commercially available. Examples 1 and 2 and Comparative Example 1 According to the proportions in Table 1, titanium dioxide, tris(2,4-di-tert-butylphenyl)phosphite, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, N,N'-ethylenebis(stearamide), zinc stearate, and stearic acid ester were mixed with polyethylene terephthalate chips, and then melting, spinning, cooling, netting, and needlepunching were conducted to produce a geotextile of 120 g / m2. Example 3 According to the proportions in Table 1, titanium dioxide, tris(2,4-di-tert-butylphenyl)phosphite, tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, N,N'-ethylenebis(stearamide), zinc stearate, and stearic acid ester were mixed to produce an additive, or the additive was added during a production process of polyethylene terephthalate chips to produce the polyethylene terephthalate chips directly as a single raw material, and then melting, spinning, cooling, netting, and needle-punching were conducted to produce a geotextile of 120 g / m2. 2024220108   25 Jun 2026 Table 1 Formulas for the spunbond nonwoven geotextiles in the examples and comparative example Example 1 Example 2 Example 3 Comparative Example 1 Polyethylene terephthalate 9906 9853.3 9560 10000 Titanium dioxide 70 100 300 0 Tris(2,4-di-tert-butylphenyl)phosphite 7 12 36 0 Tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester 4 8 24 0 N,N'-ethylenebis(stearamide) 4 8 24 0 Zinc stearate 1 2.7 8 0 Stearic acid ester 8 16 48 0 The geotextiles in Examples 1 to 3 and Comparative Example 1 were taken and subjected to have the following tests. Test results were listed in Table 2. A geotextile was first subjected to a holding tensile test in accordance with the test standard AS2001.2.3.2 to obtain a first Newton force value, where a sample size was 100 mm x 200 mm and a tensile speed was 300 mm / min. A test result was expressed in a unit of Newton (N). An Adjacent sample was taken and placed in an aging-resistance test instrument (xenon arc lamp + simulated rain spray) for 500 h, and then taken out and subjected to the above holding tensile test to obtain a second Newton force value. Then the second Newton force value was divided by the first Newton force value to obtain a strength retention rate before and after aging, namely, an aging strength retention rate of the geotextile. The greater the aging strength retention rate of the geotextile, the better the aging resistance of the geotextile. Table 2 Aging strength retention rates of the examples and comparative example Example 1 Example 2 Example 3 Comparative Example 1 Specification 120g / m2 120g / m2 120g / m2 120g / m2 Aging strength retention rate 35% 45% 70% 30% It can be seen from the above table that a geotextile prepared by improving polyethylene terephthalate with a specified proportion of the additive in the present disclosure has significantly-enhanced aging resistance. It is apparent for those skilled in the art that the present disclosure is not limited to details of 2024220108   25 Jun 2026 the above exemplary examples, and that the present disclosure may be implemented in other specific forms without departing from spirit or basic features of the present disclosure. Accordingly, the examples should be regarded in all points of view as exemplary and not restrictive, and the scope of the present disclosure is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of equivalent elements of the claims should be included in the present disclosure. Any reference numerals in the claims should not be considered as limiting the involved claims. The above examples are used only to describe the technical solutions of the present disclosure, and are not intended to limit the present disclosure. Although the present disclosure is described in detail with reference to the above examples, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the above examples, or make equivalent substitutions to some technical features therein. These modifications or substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the examples of the present disclosure.

Claims

1. A spunbond nonwoven geotextile, comprising the following components in parts by weight:the polyethylene terephthalate: 9,560 to 9,906 parts;the titanium dioxide: 70 to 300 parts;the tris(2,4-di-tert-butylphenyl)phosphite: 7 to 36 parts;the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester: 4 to 24 parts;the N,N'-ethylenebis(stearamide): 4 to 24 parts;the zinc stearate: 1 to 8 parts; andthe stearic acid ester: 8 to 48 parts.

2. The spunbond nonwoven geotextile according to claim 1, whereina content of an additive for the spunbond nonwoven geotextile that is composed of the titanium dioxide, the tris(2,4-di-tert-butylphenyl)phosphite, the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, the N,N'-ethylenebis(stearamide), the zinc stearate, and the stearic acid ester in the spunbond nonwoven geotextile is 0.94% to 4.4%.

3. The spunbond nonwoven geotextile according to claim 1, comprising the following components in parts by weight:the polyethylene terephthalate: 9,853.3 parts;the titanium dioxide: 100 parts;the tris(2,4-di-tert-butylphenyl)phosphite: 12 parts;the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester: 8 parts;the N,N'-ethylenebis(stearamide): 8 parts;the zinc stearate: 2.7 parts; andthe stearic acid ester: 16 parts.2024220108   25 Jun 20264. The spunbond nonwoven geotextile according to any one of claims 1 to 3, whereinan intrinsic viscosity of the polyethylene terephthalate is 0.68 dL / g to 0.73 dL / g, and a test standard for the intrinsic viscosity is GB / T 14189-2015.

5. A preparation method of the spunbond nonwoven geotextile according to any one of claims 1 to 4, comprising:mixing the titanium dioxide, the tris(2,4-di-tert-butylphenyl)phosphite, the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, the N,N'-ethylenebis(stearamide), the zinc stearate, and the stearic acid ester with polyethylene terephthalate chips in the proportions, melting, spinning, cooling, netting, and needle-punching to produce the spunbond nonwoven geotextile; orduring a production process of the polyethylene terephthalate chips, adding an additive composed of the titanium dioxide, the tris(2,4-di-tert-butylphenyl)phosphite, the tetrakis (3,5-di-tert-butyl-4-hydroxy) phenylpropanoic acid pentaerythritol ester, the N,N'-ethylenebis(stearamide), the zinc stearate, and the stearic acid ester to produce the polyethylene terephthalate chips directly as a single raw material, melting, spinning, cooling, netting, and needle-punching to produce the spunbond nonwoven geotextile.