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Preparation method for PVC composite material with enhanced anti-ultraviolet performance and flame resistance
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A flame retardant and composite material technology, applied in the field of PVC composite material preparation, to achieve the effects of simplifying the process flow, optimizing the anti-ultraviolet ability and flame retardant performance, and prolonging the service life
Inactive Publication Date: 2019-11-08
QINGHAI UNIVERSITY
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[0005] At present, there are many studies on the anti-ultraviolet ability of PVC composite materials enhanced by single zincoxide or titanium dioxide particles, but Mg(OH) 2 with TiO 2 It is prepared as a hybrid inorganic material, and there are few reports on the use of hybridinorganic materials to strengthen composite materials
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Embodiment 1
[0067] A kind of preparation method of the PVC composite material that anti-ultraviolet and anti-flame retardant property strengthens, comprises the following steps:
[0068] (1) Preparation of surface modifier
[0069] Transfer a certain amount of KH570 to a three-necked flask, and when the temperature rises to 60°C, add PEG6000 according to the mass ratio of PEG6000 and KH570 at a ratio of 1:1, and stir for 1 hour.
[0071] The addition amount of CPE135A is 5g, the addition amount of chlorinated paraffin is 0.6g, TiO 2 The amount added is 2g, Mg(OH) 2 The addition amount is 1g, and the above four materials are put into a ball mill for thorough mixing, and the ball milling time is 6 hours.
[0073] Add the product of step (2) to the product of step (1) in a ratio of 3:1, and react for 40 minutes under stirring, wherein the stirring speed is 500r / min, and put the stirred pro...
Embodiment 2
[0082] In this example, the optimal parameters are determined by changing the pH and CPE135A and the feasibility of this process is illustrated. This example is basically the same as Example 1, and the different data refer to the following content.
[0083] TiO prepared in the present invention 2 / Mg(OH) 2 Enhanced performance of PVC functional composites:
[0084]
Embodiment 3
[0086] In this embodiment, the optimal parameters are determined by changing the pH and CPE135A and the feasibility of this process is illustrated. This embodiment is basically the same as that of Embodiment 1, and the different data refer to the following content.
[0087] TiO prepared in the present invention 2 / Mg(OH) 2 Enhanced performance of PVC functional composites:
[0088]
[0089]
[0090] It can be seen that the change trend caused by different PH and CPE135A leads to changes in the number of surface functional groups, which in turn affects the surface contact between inorganic materials and PVC, thereby affecting the performance of the material
[0091] It can be seen that the present invention is based on numerous studies of predecessors. The present invention combines the abundant salt lake resources and extreme climate conditions in Qinghai area, and adopts a compression molding process for TiO 2 / Mg(OH) 2 A method for modifying and preparing functional...
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Abstract
The invention provides a preparation method for a PVC composite material with enhanced anti-ultraviolet performance and flame resistance. The preparation method comprises the following steps: S1, preparation of a surface modifier: fully mixing a silanecoupling agent KH570 and polyethylene glycol PEG6000 under the condition of mechanical stirring to obtain the surface modifier; S2, preparation ofan inorganic material: fully mixing CPE135A, chlorinated paraffin, TiO2 and Mg(OH)2 according to a certain ratio to obtain the inorganic material; S3, modification of the inorganic material: subjecting the surface modifier and the inorganic material prepared in steps S1 and S2 respectively to mixing and a reaction, and then subjecting a mixed product to dispersing, centrifugation, filtering, washing and drying; and S4, preparation of the functional PVC composite material: fully mixing the modified inorganic material obtained in the step S3 with PVC, and preparing the PVC composite material with enhanced anti-ultraviolet performance and flame resistance by using a compression molding process.
Description
technical field [0001] The invention generally relates to the technical field of PVC composite materials, in particular to a preparation method of PVC composite materials with enhanced anti-ultraviolet and flame-retardant properties. Background technique [0002] PVC material has the advantages of easy processing, low cost, and good toughness. It occupies a very important position in my country's plastic industry, and its application range in life is becoming more and more extensive. Many industries involve the application of PVC, such as sports products. , Children's play equipment, rainproof tools, clothing, household PVC profiles, PVC pipes, PVC films. However, PVC materials are generally used outdoors. During this process, they are prone to aging due to ultraviolet radiation, resulting in a decrease in the flame retardant performance of PVC materials, which cannot meet the fire retardant grades of certain building materials and the requirements for long-term outdoor use. ...
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