Process for the preparation of a high adhesion modified cellulose-containing polyester putty

Abstract

The application belongs to the technical field of paint, and particularly relates to a preparation method of a polyester putty containing modified cellulose and having high bonding performance. The polyester putty has high bonding performance by introducing modified cellulose into polyester resin, and cooperating with the joint action of amino-modified silicon dioxide and modified talc powder, so that the impact resistance and poor water resistance of the polyester putty are effectively improved, and the adhesion grade is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of coatings, and particularly relates to a preparation method of a polyester putty containing modified cellulose with high bonding performance. BACKGROUND

[0002] Putty, also known as primer, is usually composed of unsaturated polyester resin, fillers, additives and the like. The unsaturated polyester resin generally needs to have certain air dryness, is easy to polish, has good adhesion to the substrate, and has good compatibility with the upper layer of paint. Putty is a relatively environmentally friendly coating product, and its coating process generally adopts automatic electrostatic spraying, which can effectively reduce the "three wastes" and is welcomed by the application market. In addition to the drawbacks of poor adhesion, impact resistance and adsorption of putty, some workpieces often need to be filled and leveled with putty during pretreatment. However, the putty layer often causes problems such as blistering, delamination and poor adhesion of the paint film due to insufficient temperature resistance.

[0003] A water-based environmentally friendly unsaturated polyester putty for rail transit vehicles and a preparation method thereof are disclosed in a Chinese patent (publication number CN113549364B). The patent uses a water-based acrylic modified unsaturated polyester resin dispersion and an aliphatic polyurethane acrylate dispersion as the main base material, and deionized water as a substitute for traditional active diluents such as styrene. The patent innovatively applies oil to water-based resin in putty, and there is no "oxygen inhibition" phenomenon during the drying process. The use of a composite catalyst ensures that the putty meets the requirements of 60℃ baking for 2h drying or overnight self-drying polishing under extreme conditions such as low temperature and high humidity. However, the patent does not solve the problems of poor impact resistance and water resistance, low adhesion grade and poor bonding performance of polyester putty in the prior art, which seriously affects the application of polyester putty.

[0004] Therefore, there is an urgent need for a polyester putty containing modified cellulose with high bonding performance. By introducing modified cellulose into the polyester putty and cooperating with other suitable components, the impact resistance and water resistance of the polyester putty can be improved, and the adhesion grade can be increased, thereby obtaining high bonding performance. SUMMARY

[0005] The purpose of the present application is to provide a preparation method of a polyester putty containing modified cellulose with high bonding performance. By introducing modified cellulose into the polyester resin and cooperating with amino-modified silicon dioxide and modified talc powder, the impact resistance and water resistance of the polyester putty can be effectively improved, and the adhesion grade can be increased, thereby obtaining high bonding performance.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The present application provides a preparation method of a polyester putty containing modified cellulose with high bonding performance, comprising the following steps:

[0008] Step S1: 10-15 parts by weight of diethylene glycol and 10-15 parts by weight of adipic acid are mixed and stirred at 170-180°C for 30-60 min, and then 30-40 parts by weight of bromine maleic anhydride is added and reacted at 180-185°C for 2-4 h. After the reaction is completed, the mixture is cooled to room temperature, filtered, washed, and dried to obtain a polyester resin. Then 50-70 parts by weight of the polyester resin, 1-3 parts by weight of benzoyl peroxide, and 10-20 parts by weight of styrene are uniformly mixed, and then 20-30 parts by weight of modified cellulose is added and stirred for 1-3 h to obtain a polyester resin containing modified cellulose;

[0009] Step S2: 1-3 parts by weight of a cobalt salt promoter, 0.2-0.4 parts by weight of an organic amine promoter, and 0.12-0.15 parts by weight of methylhydroquinone are added to 90-120 parts by weight of the polyester resin containing modified cellulose, and dispersed at a speed of 600-700 rpm for 30-40 min. Then 8-10 parts by weight of silicon dioxide and 4-6 parts by weight of bentonite are added and dispersed at a speed of 1450-1500 rpm for 20-30 min. Then 150-180 parts by weight of talc is added and dispersed at a speed of 1000-1050 rpm for 50-60 min. Finally, 3-5 parts by weight of styrene is added and ground to obtain a polyester putty containing modified cellulose with high adhesion.

[0010] As a preferred solution, the method for preparing the modified cellulose comprises: 20-30 parts by weight of cellulose is added to 200-250 parts by weight of chloroform, and stirred under a gas atmosphere for 2-4 h. Then 6-8 parts by weight of furfurylamine and 2-4 parts by weight of pyridine are added and stirred at 60-70°C for 6-8 h. After the reaction is completed, the reaction product is centrifuged and vacuum dried to obtain the modified cellulose.

[0011] As a preferred solution, the gas atmosphere is a nitrogen gas atmosphere or an argon gas atmosphere.

[0012] The polyester resin containing modified cellulose can improve the wettability of the putty to the substrate, so that the putty can better penetrate into the micropores on the surface of the substrate, thereby obtaining high adhesion and effectively improving the adhesion grade.

[0013] As a preferred solution, the cobalt salt promoter is cobalt isooctoate and cobalt naphthenate.

[0014] As a preferred solution, the mass ratio of the cobalt isooctoate and the cobalt naphthenate is (1-2):1.

[0015] As a preferred solution, the organic amine promoter is selected from any one or a combination of at least two of N,N-dimethylaniline, N,N-diethylaniline, and diethanolamine.

[0016] As a preferred scheme, the silica is an amino-modified silica; a preparation method of the amino-modified silica comprises: adding 8-10 parts of silica into 250-300 parts of deionized water, ultrasonic dispersion at room temperature for 0.5 h, then adding 3-5 parts of 3-aminopropyl triethoxysilane for amino-modification treatment, after the treatment, centrifugation is carried out, the obtained solid is washed with deionized water for three times, vacuum drying is carried out, and the amino-modified silica is obtained.

[0017] As a preferred scheme, the condition of the amino-modification treatment comprises: adjusting the pH to 7.5-7.8, and stirring and reacting at 70-75 DEG C for 10-12 h.

[0018] As a preferred scheme, the particle size of the silica is 200-400 nm.

[0019] The amino-modified silica can effectively block the nano-pores and micro-cracks of the polyester putty, and is strongly adsorbed on the material surface and forms a hydrophobic barrier through electrostatic action and hydrogen bond, so that the water resistance of the polyester putty is improved.

[0020] As a preferred scheme, the talc powder is a modified talc powder; a preparation method of the modified talc powder comprises: uniformly mixing 8-10 parts of oleic acid and 5-8 parts of gamma-glycidoxypropyltrimethoxysilane, then adding 2-4 parts of tetrabutyl titanate and 2-4 parts of deionized water, stirring at 80-100 DEG C for 10-20 min, and obtaining an intermediate product; uniformly mixing 80-100 parts of talc powder and 5-8 parts of gamma-glycidoxypropyltrimethoxysilane, reacting at 50-60 DEG C for 10-20 min, then adding 15-20 parts of the intermediate product, and treating at 65-70 DEG C for 30-40 min, and obtaining the modified talc powder.

[0021] Titanate is introduced into the modified talc powder, the titanate can form a protective film on the surface of the talc powder as a multifunctional coupling agent, so that the interfacial bonding force between the talc powder and the matrix resin is enhanced, and the impact resistance of the putty is improved.

[0022] Compared with the prior art, the application has the following advantages and beneficial effects:

[0023] 1. The bromine atoms introduced into the modified cellulose polyester resin of this invention can increase the hydrophobicity of the molecules and reduce water penetration; the titanate in the modified talc can form a hydrophobic protective film, reducing contact with water molecules; the amino groups in the amino-modified silica can combine with other components such as polyester resin to reduce water molecule penetration. The combined effect of multiple components increases water resistance; at the same time, the modified components can also form an interconnected network structure, improving the adhesion level and impact resistance of the polyester putty.

[0024] 2. The polyester resin containing modified cellulose in this invention can improve the wettability of putty to the substrate, allowing the putty to better penetrate into the micropores on the surface of the substrate, thereby obtaining high adhesion performance and effectively improving the adhesion level.

[0025] 3. The modified talc powder of the present invention introduces titanate. As a multifunctional coupling agent, titanate can form a protective film on the surface of talc powder, enhance the interfacial bonding force between talc powder and matrix resin, and thus improve the impact resistance of putty.

[0026] 4. The amino-modified silica of the present invention can effectively seal the nanopores and microcracks of polyester putty, and strongly adsorb onto the material surface through electrostatic interaction and hydrogen bonding to form a hydrophobic barrier, thereby improving the water resistance of polyester putty. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The sources of some components in the examples and comparative examples are as follows:

[0029] Commercially available polyester resin, product number NH3307, was purchased from Guangzhou Qingtian Materials Technology Co., Ltd.

[0030] Commercially available talc powder, product number 396820, was purchased from Shanghai Botong Chemical Co., Ltd.

[0031] Silica I, product number zkky7767653-0135, with an average particle size of 300nm, was purchased from Beijing Zhongke Keyou Technology Co., Ltd.

[0032] Silica II, with product number S104597 and an average particle size of 15nm, was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.

[0033] Silica III, product number S118568, with an average particle size of 1 mm, was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.

[0034] Bentonite, item number PA07513, purchased from Shanghai Chuang Sai Technology Co., Ltd.

[0035] Methylhydroquinone, CAS number 95-71-6, purchased from Shanghai Macklin Biochemical Technology Co., Ltd.

[0036] Cellulose, item number C434461, purchased from Shanghai Aladdin Biochemical Technology Co., Ltd.

[0037] Diethylene glycol, CAS number 111-46-6, purchased from National Pharmaceutical Group Chemical Reagent Co., Ltd.

[0038] Bromomaleic anhydride, CAS number 5926-51-2, purchased from Shanghai Macklin Biochemical Technology Co., Ltd.

[0039] 3-Aminopropyltriethoxysilane, CAS number 919-30-2, purchased from National Pharmaceutical Group Chemical Reagent Co., Ltd.

[0040] Gamma-glycidoxypropyltrimethoxysilane, CAS number 2530-83-8, purchased from Shanghai Macklin Biochemical Technology Co., Ltd.

[0041] Example 1

[0042] The present embodiment provides a preparation method of a polyester putty containing modified cellulose with high bonding performance, comprising the following steps:

[0043] Preparation of modified cellulose: 30 parts of cellulose was added to 250 parts of chloroform, stirred under nitrogen gas atmosphere for 4h, then 8 parts of furfurylamine and 4 parts of pyridine were added and stirred at 70℃ for 6h. After the reaction was completed, the reaction product was centrifuged and vacuum dried to obtain the modified cellulose.

[0044] Preparation of amino-modified silica: 10 parts of silica (silica I) was added to 300 parts of deionized water, ultrasonically dispersed at room temperature for 0.5h, then 5 parts of 3-aminopropyltriethoxysilane was added for amino modification treatment, the pH was adjusted to 7.8, and the stirring reaction was carried out at 75℃ for 10h. After the treatment was completed, the centrifuged solid was washed with deionized water three times, and vacuum dried to obtain the amino-modified silica.

[0045] Preparation of modified talc powder: 10 parts of oleic acid and 8 parts of γ-glycidoxypropyltrimethoxysilane were mixed uniformly, then 4 parts of tetrabutyl titanate and 4 parts of deionized water were added, and stirred at 100°C for 10 min to obtain an intermediate product; 100 parts of talc powder and 8 parts of γ-glycidoxypropyltrimethoxysilane were mixed uniformly, and reacted at 60°C for 10 min, then 20 parts of the intermediate product was added, and treated at 70°C for 30 min to obtain the modified talc powder.

[0046] Step S1: 15 parts of diethylene glycol and 15 parts of adipic acid were mixed and stirred at 180°C for 30 min, then 40 parts of bromine maleic anhydride was added at 65°C, and then reacted at 185°C for 2h, after the reaction was completed, it was cooled to room temperature, filtered, washed and dried to obtain a polyester resin; 70 parts of the polyester resin, 3 parts of benzoyl peroxide and 20 parts of styrene were mixed uniformly, then 30 parts of modified cellulose was added and stirred for 3h to obtain a polyester resin containing modified cellulose;

[0047] Step S2: 3 parts of cobalt salt promoter (2 parts of cobalt isooctanoate and 1 part of cobalt naphthenate), 0.4 parts of N,N-dimethylaniline and 0.15 parts of methylhydroquinone were added to 120 parts of the polyester resin containing modified cellulose, and dispersed at a speed of 700 rpm for 30 min, then 10 parts of amino-modified silica and 6 parts of bentonite were added and dispersed at a speed of 1500 rpm for 20 min, then 180 parts of modified talc powder was added and dispersed at a speed of 1050 rpm for 50 min, and finally 5 parts of styrene was added and ground to obtain a polyester putty containing modified cellulose with high bonding performance.

[0048] Example 2

[0049] The present embodiment provides a method for preparing a polyester putty containing modified cellulose with high bonding performance, comprising the following steps:

[0050] Preparation of modified cellulose: 20 parts of cellulose was added to 200 parts of chloroform, stirred under argon gas atmosphere for 2h, then 6 parts of furfurylamine and 2 parts of pyridine were added and stirred at 60°C for 8h, after the reaction was completed, the reaction product was centrifuged and vacuum dried to obtain the modified cellulose.

[0051] Preparation of amino-modified silica: 8 parts of silica (silica I) was added into 250 parts of deionized water, and ultrasonic dispersion was carried out at room temperature for 0.5 h, then 3 parts of 3-aminopropyl triethoxysilane was added for amino-modification treatment, the pH was adjusted to 7.5, and stirring reaction was carried out at 70°C for 12 h. After the treatment was completed, centrifugation was carried out, the solid obtained by centrifugation was washed with deionized water for three times, and vacuum drying was carried out to obtain the amino-modified silica.

[0052] Preparation of modified talc powder: 8 parts of oleic acid and 5 parts of γ-glycidoxypropyltrimethoxysilane were uniformly mixed, then 2 parts of tetrabutyl titanate and 2 parts of deionized water were added, stirring was carried out at 80°C for 20 min to obtain an intermediate product; 80 parts of talc powder and 5 parts of γ-glycidoxypropyltrimethoxysilane were uniformly mixed, reaction was carried out at 50°C for 20 min, then 15 parts of the intermediate product was added, and treatment was carried out at 65°C for 40 min to obtain the modified talc powder.

[0053] Step S1: 10 parts of diethylene glycol and 10 parts of adipic acid were mixed, stirring was carried out at 170°C for 60 min, 30 parts of bromomaleic anhydride was added after the temperature was lowered to 60°C, then reaction was carried out at 185°C for 2 h, after the reaction was completed, the temperature was cooled to room temperature, filtration, washing and drying were carried out to obtain a polyester resin; 50 parts of the polyester resin, 1 part of benzoyl peroxide and 10 parts of styrene were uniformly mixed, then 20 parts of modified cellulose was added and stirring was carried out for 1 h to obtain a polyester resin containing modified cellulose;

[0054] Step S2: 1 part of a cobalt salt promoter (0.5 parts of cobalt iso-octoate and 0.5 parts of cobalt naphthenate), 0.2 parts of N,N-diethyl aniline and 0.12 parts of methylhydroquinone were added into 90 parts of the polyester resin containing modified cellulose, dispersion was carried out at a rotation speed of 600 rpm for 40 min, then 8 parts of amino-modified silica and 4 parts of bentonite were dispersed at a rotation speed of 1450 rpm for 30 min, 150 parts of modified talc powder was dispersed at a rotation speed of 1000 rpm for 60 min, and finally 3 parts of styrene was added for grinding treatment to obtain a polyester putty containing modified cellulose with high bonding performance.

[0055] Example 3

[0056] The embodiment provides a preparation method of a polyester putty containing modified cellulose with high bonding performance, which comprises the following steps:

[0057] Preparation of modified cellulose: 25 parts of cellulose was added into 220 parts of chloroform under nitrogen atmosphere and stirred for 3 h, then 7 parts of furfurylamine and 3 parts of pyridine were added and stirred at 65℃ for 7 h. After the reaction was completed, the reaction product was obtained by centrifugation and vacuum drying to obtain the modified cellulose.

[0058] Preparation of amino-modified silica: 9 parts of silica (silica I) was added into 280 parts of deionized water and ultrasonically dispersed for 0.5 h at room temperature, then 4 parts of 3-aminopropyl triethoxysilane was added for amino-modification treatment, the pH was adjusted to 7.6, and stirred at 72℃ for 11 h. After the treatment was completed, the obtained solid was washed with deionized water for three times and vacuum dried to obtain the amino-modified silica.

[0059] Preparation of modified talc powder: 9 parts of oleic acid and 6 parts of γ-glycidoxypropyltrimethoxysilane were mixed uniformly, then 3 parts of tetrabutyl titanate and 3 parts of deionized water were added and stirred at 90℃ for 15 min to obtain an intermediate product; 90 parts of talc powder and 6 parts of γ-glycidoxypropyltrimethoxysilane were mixed uniformly and reacted at 55℃ for 15 min, then 18 parts of the intermediate product was added and treated at 68℃ for 35 min to obtain the modified talc powder.

[0060] Step S1: 12 parts of diethylene glycol and 12 parts of adipic acid were mixed and stirred at 175℃ for 40 min, then 35 parts of bromomaleic anhydride was added and reacted at 182℃ for 3 h. After the reaction was completed, the reaction system was cooled to room temperature, filtered, washed and dried to obtain the polyester resin; 60 parts of the polyester resin, 2 parts of benzoyl peroxide and 15 parts of styrene were mixed uniformly, then 25 parts of the modified cellulose was added and stirred for 2 h to obtain the polyester resin containing the modified cellulose.

[0061] Step S2: 2 parts of cobalt salt accelerator (1 part of cobalt isooctoate and 1 part of cobalt naphthenate), 0.3 parts of diethanolamine and 0.14 parts of methylhydroquinone were added into 100 parts of the polyester resin containing the modified cellulose and dispersed at a rotation speed of 650 rpm for 35 min, then 9 parts of the amino-modified silica and 5 parts of bentonite were added and dispersed at a rotation speed of 1480 rpm for 25 min, 160 parts of the modified talc powder was added and dispersed at a rotation speed of 1020 rpm for 55 min, and finally 4 parts of styrene was added for grinding treatment to obtain the polyester putty containing the modified cellulose with high adhesion.

[0062] Comparative Example 1

[0063] This comparative example provides a preparation method of a polyester putty, which is different from Example 1 in that a commercially available polyester resin is used to replace the polyester resin containing modified cellulose.

[0064] Comparative Example 2

[0065] This comparative example provides a preparation method of a polyester putty, which is different from Example 1 in that a commercially available talc is used to replace the modified talc.

[0066] Comparative Example 3

[0067] This comparative example provides a preparation method of a polyester putty, which is different from Example 1 in that the amino-modified silica is prepared by using silica I to replace silica I.

[0068] Comparative Example 4

[0069] This comparative example provides a preparation method of a polyester putty, which is different from Example 1 in that the amino-modified silica is prepared by using silica II to replace silica I.

[0070] Comparative Example 5

[0071] This comparative example provides a preparation method of a polyester putty, which is different from Example 1 in that the amino-modified silica is prepared by using silica III to replace silica I.

[0072] Performance Test

[0073] The polyester putties prepared in the above examples and comparative examples are subjected to the following tests:

[0074] (1) Adhesion test

[0075] The adhesion is tested according to the requirements of GB / T 9286-2021 Paint and Varnish Crosshatch Test.

[0076] (2) Impact resistance test

[0077] The impact resistance is tested according to the requirements of GB / T 1732-2020 Paint Film Impact Resistance Test Method.

[0078] (3) Water resistance

[0079] The water resistance is tested according to the requirements of GB / T 5209-1985 Paint and Varnish Water Resistance Test Method.

[0080] The performance test results are shown in Table 1:

[0081] Table 1 Performance Test Results

[0082]

[0083]

[0084] From the performance test results, the comprehensive performance of the polyester putty of Examples 1-3 is the most outstanding, the adhesion grade is 0 level, the impact resistance is 42-45 cm, and there is no swelling and softening phenomenon after the water resistance test, which is mainly because the modified cellulose is introduced into the polyester resin, and the combination of amino-modified silica and modified talc powder effectively improves the impact resistance and poor water resistance of the polyester putty, and increases the adhesion grade. Compared with Example 1, the adhesion grade of Comparative Example 1 using commercially available polyester resin instead of polyester resin containing modified cellulose is reduced, the impact resistance is reduced, and the water resistance is poor; compared with Example 1, the adhesion grade of Comparative Example 2 using commercially available talc powder instead of modified talc powder is reduced, the impact resistance is reduced, and the water resistance is poor; compared with Example 1, the adhesion grade of Comparative Example 3 using commercially available silica I instead of amino-modified silica is reduced, the impact resistance is reduced, and the water resistance is poor; compared with Example 1, Comparative Example 4 uses silica II to replace silica I to prepare amino-modified silica, because the particle size of silica II is too small, the modification effect is poor, so the adhesion grade is reduced, the impact resistance is reduced, and the water resistance is poor; compared with Example 1, Comparative Example 5 uses silica III to replace silica I to prepare amino-modified silica, because the particle size of silica III is too large, the modification effect is poor, so the adhesion grade is reduced, the impact resistance is reduced, and the water resistance is poor. The above experimental results further prove the importance of the technical scheme defined in the present application to its technical effect.

[0085] The above is the preferred embodiment of the present application, it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, can also make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A method for producing a high adhesive performance modified cellulose-containing polyester putty, characterized by, The method comprises the following steps: Step S1: 10-15 parts by weight of diethylene glycol and 10-15 parts by weight of adipic acid are mixed, stirred at 170-180℃ for 30-60 min, and then cooled to 60-65℃; 30-40 parts by weight of bromine maleic anhydride is added, and then reacted at 180-185℃ for 2-4 h; after the reaction is completed, the reaction product is cooled to room temperature, filtered, washed, and dried to obtain a polyester resin; 50-70 parts by weight of the polyester resin, 1-3 parts by weight of benzoyl peroxide, and 10-20 parts by weight of styrene are uniformly mixed, and then 20-30 parts by weight of modified cellulose is added and stirred for 1-3 h to obtain a polyester resin containing modified cellulose; Step S2: 1-3 parts by weight of a cobalt salt promoter, 0.2-0.4 parts by weight of an organic amine promoter, and 0.12-0.15 parts by weight of methylhydroquinone are added to 90-120 parts by weight of the polyester resin containing modified cellulose, and dispersed at 600-700 rpm for 30-40 min; then 8-10 parts by weight of silicon dioxide and 4-6 parts by weight of bentonite are added and dispersed at a speed of 1450-1500 rpm for 20-30 min; then 150-180 parts by weight of talc is added and dispersed at a speed of 1000-1050 rpm for 50-60 min; and then 3-5 parts by weight of styrene is added and ground to obtain a polyester putty containing modified cellulose with high bonding performance; The cobalt salt promoter is a mixture of cobalt isooctanoate and cobalt naphthenate at a mass ratio of (1-2):1; the organic amine promoter is selected from any one or a combination of at least two of N,N-dimethylaniline, N,N-diethylaniline, and diethanolamine; The method for preparing the modified cellulose comprises the following steps: 20-30 parts by weight of cellulose is added to 200-250 parts by weight of chloroform, and stirred under a gas atmosphere for 2-4 h; then 6-8 parts by weight of furfurylamine and 2-4 parts by weight of pyridine are added and stirred at 60-70℃ for 6-8 h; after the reaction is completed, the reaction product is centrifuged and vacuum dried to obtain the modified cellulose; The silicon dioxide is amino-modified silicon dioxide; the method for preparing the amino-modified silicon dioxide comprises the following steps: 8-10 parts by weight of silicon dioxide is added to 250-300 parts by weight of deionized water, and ultrasonically dispersed at room temperature for 0.5 h; then 3-5 parts by weight of 3-aminopropyltriethoxysilane is added for amino-modification treatment; after the treatment is completed, the obtained solid is centrifuged, washed with deionized water three times, and vacuum dried to obtain the amino-modified silicon dioxide; The talc is modified talc; the method for preparing the modified talc comprises the following steps: 8-10 parts by weight of oleic acid and 5-8 parts by weight of γ-glycidoxypropyltrimethoxysilane are uniformly mixed, then 2-4 parts by weight of tetrabutyl titanate and 2-4 parts by weight of deionized water are added, and stirred at 80-100℃ for 10-20 min to obtain an intermediate product; 80-100 parts by weight of talc and 5-8 parts by weight of γ-glycidoxypropyltrimethoxysilane are uniformly mixed, reacted at 50-60℃ for 10-20 min, then 15-20 parts by weight of the intermediate product is added, and treated at 65-70℃ for 30-40 min to obtain the modified talc.

2. A process for the preparation of a high bonding performance modified cellulose containing polyester putty according to claim 1, characterized in that, The gas atmosphere is a nitrogen gas atmosphere or an argon gas atmosphere.

3. A process for the preparation of a high bonding performance modified cellulose containing polyester putty according to claim 1, characterized in that, The conditions of the amino modification treatment include adjusting the pH to 7.5-7.8, stirring and reacting at 70-75 DEG C for 10-12 hours.

4. A process for the preparation of a high bonding performance modified cellulose containing polyester putty according to claim 1, characterized in that, The particle size of the silicon dioxide is 200-400 nm.

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