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CN-121975109-A - Polyamino silane polymer and preparation method and application thereof

CN121975109ACN 121975109 ACN121975109 ACN 121975109ACN-121975109-A

Abstract

The invention relates to the technical field of organic-high polymer synthesis, in particular to a polyamino silane polymer, a preparation method and application thereof, and the preparation method of the polyamino silane polymer comprises the following steps of S1, carrying out amidation condensation reaction on a polyamino compound and a polycarbonyl compound to obtain polyamide resin, S2, grafting a silane coupling agent on the polyamide resin to obtain the polyamino silane polymer, wherein the polyamino compound has a plurality of primary amino structures and secondary amino structures, and the polycarbonyl compound has a plurality of carboxyl groups, ester groups or anhydride structures.

Inventors

  • LU ZHIYI
  • CHEN JINJUN
  • CHEN XUANHUI

Assignees

  • 佛山市普加化工有限公司

Dates

Publication Date
20260505
Application Date
20260130

Claims (10)

  1. 1. A polyamino silane polymer is characterized by having a structural formula shown in a formula I: A formula I; wherein, the x is 2 to 6, y is 5 to 20, and n is 1 to 3.
  2. 2. A preparation method of polyamino silane polymer is characterized in that, a process for preparing the polyaminosilane polymer according to claim 1 comprising the steps of: S1, carrying out amidation condensation reaction on a polyamino compound and a polycarbonyl compound to obtain polyamide resin; s2, grafting a silane coupling agent on polyamide resin to obtain a polyamino silane polymer; wherein the polyamino compound has a plurality of primary amino structures and secondary amino structures, and the polycarbonyl compound has a plurality of carboxyl groups, ester groups or anhydride structures.
  3. 3. The method for producing a polyamino silane polymer according to claim 2, wherein the molar ratio of the polyamino compound, the polycarbonyl compound and the silane coupling agent is 1.05 to 1.5:1 (0.3 to 0.8).
  4. 4. A process for producing a polyaminosilane polymer according to claim 2 wherein the polyamino compound is at least one selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, ethylenediamine, butanediamine, hexamethylenediamine, m-phenylenediamine, p-phenylenediamine, o-phenylenediamine, 2, 4-trimethylhexamethylenediamine, isophoronediamine, 4' -diaminodiphenylmethane and m-xylylenediamine.
  5. 5. A process for preparing a polyaminosilane polymer according to claim 2, characterized in that the polycarbonyl compound is at least one selected from succinic acid, glutaric acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, 1, 4-cyclohexanedicarboxylic acid, dimethyl succinate, diethyl succinate, dimethyl maleate, diethyl maleate, maleic anhydride, phthalic anhydride.
  6. 6. A process for preparing a polyaminosilane polymer according to claim 2 characterized in that: the silane coupling agent is selected from 3-chloropropyl trimethoxysilane, 3-chloropropyl triethoxysilane, 3-chloropropyl methyldimethoxysilane, 3-chloropropyl methyldiethoxysilane, 3-chloropropyl methyldipropoxysilane, 3-chloropropyl triisopropylsilane, 3-isocyanato-propyl trimethoxysilane, 3-isocyanato-propyl triethoxysilane, 3-glycidoxypropyl trimethoxysilane, 3-glycidoxypropyl triethoxysilane, 3-glycidoxypropyl methyldimethoxysilane, 3-glycidoxypropyl methyldiethoxysilane, beta- (3, 4-epoxycyclohexane) ethyltrimethoxysilane, beta- (3, 4-epoxycyclohexane) ethyltriethoxysilane, 3- (acryloyloxy) propyltrimethoxysilane, 3- (acryloyloxy) propylmethyldimethoxysilane, 3- (vinyloxy) propyltrimethoxysilane, 3-aminopropyl trimethoxysilane, 3-aminopropyl triethoxysilane, 3-aminopropyl methyldiethoxysilane, 3-aminopropyl methyldimethoxysilane, N- (2-aminoethyl) -3-aminopropyl-triethoxysilane, N- (2-aminopropyl) -2-triethoxysilane, at least one of N- (2-aminoethyl) -3-aminopropyl methyl dimethoxy silane and N- (2-aminoethyl) -3-aminopropyl methyl diethoxy silane.
  7. 7. The method for preparing a polyamino silane polymer according to claim 2, characterized in that in step S1, the reaction temperature of the amidation reaction is 130-180 ℃.
  8. 8. The method for preparing a polyaminosilane polymer according to claim 2, characterized in that the operation of step S1 is as follows: Under the protection of nitrogen, carrying out amidation condensation reaction on a polyamino compound and a polycarbonyl compound to obtain a polyamide resin mixture; And (3) carrying out reduced pressure distillation on the polyamide resin mixture for 3-4 hours in a vacuum environment to obtain the polyamide resin.
  9. 9. The method for preparing a polyamino silane polymer according to claim 8, characterized in that the operation of step S2 is as follows: Completely dissolving polyamide resin in a solvent with the same weight, adding a silane coupling agent for reaction, and completely obtaining a polyamino silane polymer after the reaction; wherein the solvent is any one of methanol, ethanol and isopropanol.
  10. 10. Use of a polyaminosilane polymer according to claim 1 in glass fiber composites.

Description

Polyamino silane polymer and preparation method and application thereof Technical Field The invention relates to the technical field of organic-high polymer synthesis, in particular to a polyamino silane polymer and a preparation method and application thereof. Background The glass fiber composite material is a composite material with good performance and wide application, is a functional material prepared from unsaturated polyester resin, epoxy resin or phenolic resin and glass fiber through a composite process, has the characteristics of light weight, high specific strength, corrosion resistance, good electric insulation and thermal insulation performance and the like, and compared with the traditional metal material and nonmetal material, the glass fiber composite material and the product thereof have the advantages of high strength, energy conservation, large degree of freedom of product design, wide applicability and the like, and is a novel material with wide application range and great development prospect. The glass fiber composite material is prepared by treating glass fiber after wiredrawing by using a sizing agent and baking, the glass fiber has strong hydrophilicity, can absorb moisture in air to an interface, and leads to the reduction of the binding force between the glass fiber and film-forming resin, so that a silane coupling agent is required to be used, the silane coupling agent plays a role in surface treatment in the sizing agent, the firm combination of the organic film-forming resin and the glass fiber is promoted, the wettability of the composite material is improved, the bundling property of glass fiber precursor is improved, silane coupling agents with different structures are required for different organic resins, wherein the epoxy resin has excellent binding property to glass, excellent chemical resistance and heat resistance, good mechanical property and excellent electrical insulation property, and is a widely applied glass fiber film-forming resin. Disclosure of Invention Aiming at the defects, the invention aims to provide a polyamino silane polymer, a preparation method and application thereof, and solves the problem that the conventional aminosilane coupling agent can not effectively improve the binding force between glass fibers and film-forming resin and improve the tensile strength of glass fiber composite materials. In order to achieve the purpose, the invention adopts the following technical scheme: A polyaminosilane polymer having the structural formula of formula I: A formula I; wherein, the x is 2 to 6, y is 5 to 20, and n is 1 to 3. A method for preparing a polyaminosilane polymer for preparing the polyaminosilane polymer, comprising the following steps: S1, carrying out amidation condensation reaction on a polyamino compound and a polycarbonyl compound to obtain polyamide resin; s2, grafting a silane coupling agent on polyamide resin to obtain a polyamino silane polymer; wherein the polyamino compound has a plurality of primary amino structures and secondary amino structures, and the polycarbonyl compound has a plurality of carboxyl groups, ester groups or anhydride structures. Preferably, the molar ratio of the polyamino compound, the polycarbonyl compound and the silane coupling agent is (1.05-1.5): 1 (0.3-0.8). Preferably, the polyamino compound is selected from at least one of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, ethylenediamine, butanediamine, hexamethylenediamine, m-phenylenediamine, p-phenylenediamine, o-phenylenediamine, 2, 4-trimethylhexamethylenediamine, isophoronediamine, 4' -diaminodiphenylmethane, m-xylylenediamine. Preferably, the multicarbonyl compound is selected from at least one of succinic acid, glutaric acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, 1, 4-cyclohexanedicarboxylic acid, dimethyl succinate, diethyl succinate, dimethyl maleate, diethyl maleate, maleic anhydride, phthalic anhydride. Preferably, the silane coupling agent is selected from the group consisting of 3-chloropropyltrimethoxysilane, 3-chloropropyltriethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropylmethyldiethoxysilane, 3-chloropropylmethyldipropoxysilane, 3-chloropropyltriisopropylsilane, 3-isocyanatopropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, beta- (3, 4-epoxycyclohexane) ethyltrimethoxysilane, beta- (3, 4-epoxycyclohexane) ethyltriethoxysilane, 3- (acryloyloxy) propyltrimethoxysilane, 3- (acryloyloxy) propylmethyldimethoxysilane, 3- (vinyloxy) propyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyldiethoxysilane, 3-aminopropylmethyldimethoxysilane, N- (2-aminopropyltrimethoxysilane, N- (2-aminopropyltrimethoxy) -N- (3, 4-epoxycyclohexane) ethyltrimethoxysilane, 3- (2-aminopropyltrimethoxysilane, at least one of N- (2-aminoethyl) -