Superfine powder filling granules special for sealing strips

Abstract

Superfine powder filling granules special for sealing strips help to change conventional products formed from single raw materials, employ a blending approach, and help to improve product performances. Polyvinyl chloride (PVC) is plastic with excellent performances, cheap price and wide application and has main disadvantages of bad thermal stability, low shock strength, bad cold resistance and bad processability. PVC is modified by blending and being added with a plasticizer, a stabilizer, a modifier, 6000-mesh modified heavy calcium and a processing auxiliary agent for processing and preparing the granules. The product has the characteristics of good flexibility, long thermal stability, ageing resistance, corrosion resistance, long service life and the like.

Description

technical field

[0001] The invention relates to a composite material of PVC and 6000-mesh superfine heavy calcium, and its preparation method, specifically a method for improving the elasticity and flexibility of the sealing strip under the condition of filling 6000-mesh. Background technique

[0002] The special pellets for superfine powder filling sealing strips are polymer materials made of PVC as the main raw material, modified by adding plasticizers, stabilizers, 600 mesh superfine heavy calcium and processing aids. It replaces the sealing strip made of rubber material. In contrast, PVC plastic has abundant sources, the price is lower than rubber, the processing process is relatively simple, and the waste and defective products can be recycled. It not only saves rubber resources, but also can greatly reduce costs, improve and enhance the performance of materials. . Contents of the invention

[0003] Under the guidance of the toughening theory of rigid particles, the...

Examples

Embodiment Construction

[0027] Example-Composition and weight of special pellets for ultrafine powder filling sealing strip

[0028] PVC resin 62.7-44%

[0029] DOP 18.8-30.6%

[0030] Chlorinated paraffin 6.2-4.4%

[0031] Stabilizer 1.3-1.5%

[0032] Processing modifier 6-6.5%

[0033] 6000 mesh super fine weight calcium 5-13%

[0034] The preparation method is

[0035] Put the PVC resin into the high-mixer, add stabilizers, plasticizers, modified formulations, 6000 mesh superfine heavy calcium and other compounding agents at 80-100 0 After high-speed kneading, it is put into twin-screw extruder for plasticization, granulation, cooling and packaging.

[0036] 1 The above examples can be based on actual conditions and according to different hardness index requirements. Different addition amounts of 6000 mesh superfine heavy calcium can be selected to achieve the purpose of toughening modification. The products made in this implementation can meet national standards after testing.

[0037] 2 Automoti...

technical field

[0001] The invention relates to a composite material of PVC and 6000-mesh superfine heavy calcium, and its preparation method, specifically a method for improving the elasticity and flexibility of the sealing strip under the condition of filling 6000-mesh. Background technique

[0002] The special pellets for superfine powder filling sealing strips are polymer materials made of PVC as the main raw material, modified by adding plasticizers, stabilizers, 600 mesh superfine heavy calcium and processing aids. It replaces the sealing strip made of rubber material. In contrast, PVC plastic has abundant sources, the price is lower than rubber, the processing process is relatively simple, and the waste and defective products can be recycled. It not only saves rubber resources, but also can greatly reduce costs, improve and enhance the performance of materials. . Contents of the invention

[0003] Under the guidance of the toughening theory of rigid particles, the...

Examples

Embodiment Construction

[0027] Example-Composition and weight of special pellets for ultrafine powder filling sealing strip

[0028] PVC resin 62.7-44%

[0029] DOP 18.8-30.6%

[0030] Chlorinated paraffin 6.2-4.4%

[0031] Stabilizer 1.3-1.5%

[0032] Processing modifier 6-6.5%

[0033] 6000 mesh super fine weight calcium 5-13%

[0034] The preparation method is

[0035] Put the PVC resin into the high-mixer, add stabilizers, plasticizers, modified formulations, 6000 mesh superfine heavy calcium and other compounding agents at 80-100 0 After high-speed kneading, it is put into twin-screw extruder for plasticization, granulation, cooling and packaging.

[0036] 1 The above examples can be based on actual conditions and according to different hardness index requirements. Different addition amounts of 6000 mesh superfine heavy calcium can be selected to achieve the purpose of toughening modification. The products made in this implementation can meet national standards after testing.

[0037] 2 Automoti...