TPR full-transparent material and preparation process thereof

Abstract

The invention discloses a TPR (Thermoplastic Rubber) full-transparent material and a preparation process thereof, and aims to solve the problems that the TPR material is poor in transparency and glossiness due to the fact that only simple calcium carbonate is adopted as a filler of a TPR shoe material. According to the key point of the technical scheme, the TPR full-transparent material is prepared from the following raw materials in parts by weight: 100-150 parts of SBS, 20-50 parts of saturated polyester resin, 10-20 parts of white carbon black, 10-20 parts of polystyrene, 50-100 parts of white oil, 35-45 parts of calcium carbonate, 1-5 parts of a wear-resistant agent, 1-2 parts of an antioxidant, 2-4 parts of a flame retardant, 3-7 parts of a coupling agent and 5-10 parts of an adhesive. According to the TPR full-transparent material and the preparation process thereof, the problem that an existing TPR material is poor in transparency and glossiness can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of TPR material preparation, and more particularly to a TPR fully transparent material and a preparation process thereof. Background Art

[0002] TPR is a thermoplastic rubber material. It exhibits rubber elasticity and can be directly processed (e.g., injection molding, extrusion, blow molding) without the need for vulcanization. TPR is a modified material based on thermoplastic styrene-butadiene rubber (SBS, SEBS) with the addition of resins (e.g., PP, PS), fillers, plasticizers, and other functional additives.

[0003] At present, thermoplastic elastomers can be used as substitutes in many rubber fields. Especially in the shoe material market, with the continuous expansion of the field of rubber sole products, the demand for TPR soles is increasing, and the quality requirements are getting higher and higher. The existing TPR shoe material filler only uses simple calcium carbonate, which makes the TPR material have poor transparency and gloss. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a TPR fully transparent material and a preparation process thereof, which can solve the problems of poor transparency and glossiness of the existing TPR material.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a TPR fully transparent material, which is made of the following raw materials in the following weight proportions: SBS 100-150 parts, saturated polyester resin 20-50 parts, white carbon black 10-20 parts, polystyrene 10-20 parts, white oil 50-100 parts, calcium carbonate 35-45 parts, wear-resistant agent 1-5 parts, antioxidant 1-2 parts, flame retardant 2-4 parts, coupling agent 3-7 parts, adhesive 5-10 parts.

[0006] The present invention is further configured as follows: the antioxidant is a compound of antioxidant 1010, antioxidant 168 and antioxidant 1076 in a mass ratio of 1.3-1.8:1.1:1.

[0007] The present invention is further configured as follows: the material further comprises the following raw material ratios in parts by weight: 5-15 parts of a defoamer, wherein the defoamer is any one of 0.01-0.05% octanol, tributyl phosphate or 0.2-0.5% of an organosilicon emulsion.

[0008] The present invention is further configured as follows: the material also includes the following raw material ratios in parts by weight: 5-10 parts of a plasticizer, and the plasticizer is any one of phthalates, polybenzoates, benzoates, polyol esters, and polyesters.

[0009] The present invention is further configured as follows: the preparation process comprises the following steps:

[0010] Step 1: Mixing: Add SBS, saturated polyester resin, white carbon black, polystyrene, white oil, calcium carbonate, wear-resistant agent, and flame retardant into a stirring device according to the proportion, stir thoroughly, and stir for 8-12 hours;

[0011] Step 2: Bonding: Add the raw materials mixed in step 1 to the coupling agent and adhesive and continue to stir thoroughly for 3-5 hours;

[0012] Step 3: Adding antioxidant: Add antioxidant to the raw materials mixed in step 2 and mix them so that the raw materials are fully mixed under the action of the antioxidant;

[0013] Step 4: Filtration: Pour the raw liquid produced in step 3 into the filtration device for multiple filtrations to remove the large amount of particulate impurities remaining in the raw liquid and ensure the purity of the raw liquid output;

[0014] Step 5: Drying: Dry the filtered stock solution again for 12-24 hours at a temperature of 120-150°C.

[0015] Step 6: Cooling: After drying, the raw materials continue to cool until the raw materials cool to 100°C and then turn over and cool to room temperature;

[0016] Step 7: Extrusion molding: After cooling, the raw liquid is extruded into long strips using an extruder;

[0017] Step 8: Material making: The raw materials extruded into long strips are made into plastic granules using a granulator to obtain the finished product.

[0018] The present invention is further configured as follows: the preparation process further comprises the following steps: adding a defoaming agent while step three is in progress.

[0019] The present invention is further configured as follows: the preparation process further comprises the following steps: adding a plasticizer while step three is in progress.

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. The present invention can solve the problems of poor transparency and glossiness of existing TPR materials;

[0022] 2. Improve the texture and gloss of raw materials under the action of plasticizer. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other unless there is a conflict.

[0024] The present invention is described in detail below with reference to the embodiments.

[0025] A fully transparent TPR material is made of the following raw materials in the following proportions by weight: 100-150 parts of SBS, 20-50 parts of saturated polyester resin, 10-20 parts of white carbon black, 10-20 parts of polystyrene, 50-100 parts of white oil, 35-45 parts of calcium carbonate, 1-5 parts of anti-wear agent, 1-2 parts of antioxidant, 2-4 parts of flame retardant, 3-7 parts of coupling agent, and 5-10 parts of adhesive; the saturated polyester resin is oil-free alkyd resin, the flame retardant is APP, and the anti-wear agent is A-186 anti-wear agent.

[0026] The antioxidant is a compound of antioxidant 1010, antioxidant 168 and antioxidant 1076 in a mass ratio of 1.3-1.8:1.1:1.

[0027] The material also includes the following raw material proportions in parts by weight: 5-15 parts of a defoamer, which is any one of 0.01-0.05% of octanol, tributyl phosphate or 0.2-0.5% of an organic silicon emulsion.

[0028] The material also includes the following raw material ratios in parts by weight: 5-10 parts of a plasticizer, and the plasticizer is any one of phthalate esters, polybenzoate esters, benzoate esters, polyol esters, and polyesters.

[0029] The preparation process includes the following steps:

[0030] Step 1: Mixing: Add SBS, saturated polyester resin, white carbon black, polystyrene, white oil, calcium carbonate, wear-resistant agent, and flame retardant into a stirring device according to the proportion, stir thoroughly, and stir for 8-12 hours;

[0031] Step 2: Bonding: Add the raw materials mixed in step 1 to the coupling agent and adhesive and continue to stir thoroughly for 3-5 hours. Adjust the pH value to 6.5-7.

[0032] Step 3: Adding antioxidant: Add antioxidant to the raw materials mixed in step 2 and mix them so that the raw materials are fully mixed under the action of antioxidant, and add defoamer and plasticizer and stir at the same time;

[0033] Step 4: Filtration: Pour the raw liquid produced in step 3 into the filtration device for multiple filtrations to remove the large amount of particulate impurities remaining in the raw liquid and ensure the purity of the raw liquid output;

[0034] Step 5: Drying: Dry the filtered stock solution again for 12-24 hours at a temperature of 120-150°C.

[0035] Step 6: Cooling: After drying, the raw materials continue to cool until the raw materials cool to 100°C and then turn over and cool to room temperature;

[0036] Step 7: Extrusion molding: After cooling, the raw liquid is extruded into long strips using an extruder;

[0037] Step 8: Material making: The raw materials extruded into long strips are made into plastic granules using a granulator to obtain the finished product.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A TPR fully transparent material, characterized by: The material is prepared from the following raw materials in proportion by weight: 100-150 parts of SBS, 20-50 parts of saturated polyester resin, 10-20 parts of white carbon black, 10-20 parts of polystyrene, 50-100 parts of white oil, 35-45 parts of calcium carbonate, 1-5 parts of anti-wear agent, 1-2 parts of antioxidant, 2-4 parts of flame retardant, 3-7 parts of coupling agent, and 5-10 parts of adhesive.

2. The TPR fully transparent material according to claim 1, characterized in that: The antioxidant is a compound of antioxidant 1010, antioxidant 168 and antioxidant 1076 in a mass ratio of 1.3-1.8:1.1:

1.

3. The TPR fully transparent material according to claim 1, characterized in that: The material further comprises the following raw material proportions in parts by weight: 5-15 parts of a defoaming agent, wherein the defoaming agent is any one of 0.01-0.05% of octanol, tributyl phosphate or 0.2-0.5% of an organosilicon emulsion.

4. The TPR fully transparent material according to claim 1, characterized in that: The material also includes the following raw material ratios in parts by weight: 5-10 parts of a plasticizer, wherein the plasticizer is any one of phthalate esters, benzene polyesters, benzoate esters, polyol esters, and polyesters.

5. The process for preparing a fully transparent TPR material according to claims 1-3, characterized in that: The preparation process comprises the following steps: Step 1: Mixing: Add SBS, saturated polyester resin, white carbon black, polystyrene, white oil, calcium carbonate, wear-resistant agent, and flame retardant into a stirring device according to the proportion, stir thoroughly, and stir for 8-12 hours; Step 2: Bonding: Add the raw materials mixed in step 1 to the coupling agent and adhesive and continue to stir thoroughly. Stirring time is 3-5h; Step 3: Adding antioxidant: Add antioxidant to the raw materials mixed in step 2 and mix them so that the raw materials are fully mixed under the action of the antioxidant; Step 4: Filtration: Pour the raw liquid produced in step 3 into the filtration device for multiple filtrations to remove the large amount of particulate impurities remaining in the raw liquid and ensure the purity of the raw liquid output; Step 5: Drying: Dry the filtered stock solution again for 12-24 hours at a temperature of 120-150°C. Step 6: Cooling: After drying, the raw materials continue to cool until the raw materials cool to 100°C and then turn over and cool to room temperature; Step 7: Extrusion molding: After cooling, the raw liquid is extruded into long strips using an extruder; Step 8: Material making: The raw materials extruded into long strips are made into plastic granules using a granulator to obtain the finished product.

6. The process for preparing a fully transparent TPR material according to claim 5, characterized in that: The preparation process further comprises the following steps: adding a defoaming agent while step three is in progress.

7. The process for preparing a fully transparent TPR material according to claim 5, characterized in that: The preparation process further comprises the following steps: adding a plasticizer while step three is in progress.