As a key regulator in rubber vulcanization systems, the rubber accelerator CTP (PVI) (chemical name: N-cyclohexylthiophthalimide), with its unique anti-scorching properties, has become a core additive for optimizing processes and ensuring quality in rubber product manufacturing. Qingdao Chengda Huili Import & Export Co., Ltd. has been deeply involved in the field of rubber chemicals for many years, providing high-purity, high-performance CTP (PVI) products to global customers with international production standards and a strict quality control system, helping the rubber industry achieve efficient and stable production.
I. CTP (PVI): The “Precision Control Expert” of Rubber Vulcanization
Rubber accelerator CTP (PVI) is a highly efficient vulcanization retarder (anti-scorching agent). Its main function is in the induction stage of rubber vulcanization – it effectively extends the scorching time of the rubber compound, preventing premature vulcanization (scorching) during mixing and molding, without affecting the cross-linking efficiency in the later stages of vulcanization or the final performance of the product. It appears as a white or light yellow crystalline powder, easily soluble in organic solvents such as benzene and toluene, and has excellent compatibility with various rubbers such as natural rubber (NR), styrene-butadiene rubber (SBR), and butadiene rubber (BR), as well as other vulcanization additives (such as CBS, MBTS, DPG, etc.). It is an essential additive for the production of high-end rubber products such as tires, rubber seals, hoses, and belts.
Compared with traditional anti-scorching agents, CTP (PVI) has significant advantages: high control precision, requiring only a small amount (usually 0.1-0.5 parts per 100 parts of rubber) to achieve the ideal anti-scorching effect; odorless and non-migrating, it will not cause discoloration or surface blooming of rubber products; strong aging resistance, and can synergize with antioxidants to further improve the service life of rubber products. II. Core Competencies of Qingdao Chengda Huili CTP (PVI)
- Ultra-High Purity and Stable, Controllable Performance
We utilize advanced synthesis processes and purification technologies, resulting in a product purity of ≥98.5% and extremely low impurity content. This ensures that key indicators such as melting point, ash content, and heating loss of each batch of CTP (PVI) meet international standards (such as ISO, REACH, and RoHS). Stable product performance helps customers precisely control production processes, reduce product defect rates caused by additive fluctuations, and improve production efficiency. - Customized Solutions to Meet Diverse Needs
For different rubber product manufacturing scenarios (such as high-temperature molding, long-cycle processing, and high wear resistance requirements), we can provide customized CTP (PVI) product solutions, including different forms such as granular and powder, as well as targeted formula adaptation guidance. Whether it’s tire tread rubber, industrial hoses, or precision seals, we can provide a suitable solution. - Full-Chain Quality Control and Guaranteed Compliance
Qingdao Chengda Huili has established a full-process quality control system from raw material procurement to finished product delivery: raw materials undergo strict screening and testing, production processes are monitored in real time, and finished products must pass testing using precision instruments such as high-performance liquid chromatography (HPLC) and infrared spectroscopy before leaving the factory. We can provide complete COA (Certificate of Analysis), MSDS (Material Safety Data Sheet), and compliance certification documents to ensure that our products meet the environmental and safety standards of major global markets, giving customers peace of mind in their import and export trade. - One-Stop Service for Easier Cooperation
As a professional rubber additive manufacturer and exporter, we not only provide high-quality CTP (PVI), but also supply a full range of rubber accelerators, antioxidants, and related products such as AC blowing agents and chlorinated polyethylene, enabling “one-stop procurement” and saving customers procurement costs and communication time. At the same time, we have a professional technical team that can provide free formula optimization, process adjustment consulting, and timely after-sales service, assisting customers in solving production problems throughout the entire process. III. Wide Application Scenarios of CTP (PVI)
The unique properties of CTP (PVI) make it widely applicable in the rubber industry, especially in scenarios with stringent requirements for production processes and product performance:
Tire Manufacturing: Used in the tread, sidewall, and carcass compounds of passenger car tires, truck tires, and construction machinery tires, preventing scorching during extrusion and molding, and improving the wear resistance, aging resistance, and service life of tires;
Industrial Rubber Products: Suitable for high-pressure hoses, conveyor belts, synchronous belts, etc., ensuring the stability of rubber compounds during long-term high-temperature processing, and enhancing the tensile strength and fatigue resistance of the products;
Seals and Precision Rubber Products: Used in O-rings, sealing rings, rubber gaskets, etc., preventing dimensional deviations caused by premature vulcanization during processing, and ensuring accurate and reliable sealing performance;
Other Rubber Products: Suitable for rubber shoe materials, rubber rollers, shock-absorbing pads, etc., optimizing production processes and improving product consistency and durability.
IV. Choose Qingdao Chengda Huili, Choose a Reliable Partner
Qingdao Chengda Huili Import & Export Co., Ltd., with years of technical accumulation in the field of rubber chemicals and international trade experience, has exported its products to dozens of countries and regions in Europe, America, Southeast Asia, and the Middle East, winning the trust and recognition of global customers. We have a complete logistics and distribution system, providing flexible transportation solutions such as sea and air freight according to customer needs, ensuring timely delivery of goods; we also provide a reasonable pricing system and flexible payment methods to help customers enhance their market competitiveness.
If you are looking for high-quality, high-stability rubber accelerator CTP (PVI), or need a one-stop procurement solution for rubber additives, Qingdao Chengda Huili is your ideal choice. Welcome to contact us anytime to create new value in the rubber industry together!
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Qingdao Chengda Huili supplies high-purity rubber accelerator CTP (PVI), with excellent anti-scorching performance, suitable for various rubber products, compliant with ISO/REACH standards, providing one-stop procurement and technical support, and is a reliable partner for global rubber companies!
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