It can slow down the reaction, maintain chemical balance, reduce surface tension, prevent light, thermal decomposition or oxidative decomposition. it mainly includes lead salts, metal soaps, organic tin, organic antimony, organic rare earths, pure organic compounds. Thermal stabilizers commonly used in industry mainly include lead salts, metal soaps, organic tin, organic antimony, organic rare earths, pure organic compounds, etc.
1.1 Organotin Lead Salt Stabilizer, Compound Stabilizer,Pvc Stabilizer,Titanium Dioxide Anatase Henan Shunbang Chemical Industry CO.,Ltd , https://www.sbpolymer.com
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(1) Excellent transparency The biggest advantage of organotin stabilizers is that they have excellent transparency. The use of organotin stabilizers in PVC formulations can produce crystalline products. Because of this, organic tin can be used in bottles, containers, corrugated boards, various types of rigid packaging containers, hoses, profiles, films, etc.
(2) Extraordinary thermal stability In terms of thermal stability, there is no other type of thermal stabilizer that can surpass it. Therefore, it is the preferred stabilizer for rigid PVC, and some varieties have better performance in soft products. Suitable for all PVC homopolymers, such as emulsion, suspension and bulk PVC, as well as vinyl chloride copolymers, graft polymers and polymer blends.
(3) The product is non-toxic. Most organotin stabilizers are non-toxic, and the migration of organotin stabilizers in rigid PVC is minimal. Therefore, organotin stabilizers are the preferred heat stabilizers for PVC for food contact.
(4) Good compatibility. Organotin stabilizers have good compatibility with PVC, so there is generally no precipitation on the metal surface, such as lead salt stabilizers and metal soap stabilizer systems.
(5) Poor lubricity Sulfur-containing tin stabilizers have poor self-lubricity. Therefore, many commercially available sulfur-containing organotins are equipped with lubricants to prevent hot melt from adhering to processing equipment during processing.
(6) High cost Compared with other types of stabilizers, the overall performance of organotin stabilizers is closer to the ideal stabilizer. However, all organotin stabilizers, regardless of their structure, have the main disadvantage that their manufacturing cost is much higher than that of lead stabilizers or metal soap compounds. In recent years, by adopting new synthetic technology, or reducing its usage in formulas, its formula cost has been reduced. In the 1970s, foreign countries developed low-priced tin products, which reduced the tin content, which also reduced the price to a certain extent.
1.2 Lead salt
(1) l Excellent stability experiments proved that among the commonly used basic lead salts, the heat resistance of sulfite is better than that of sulfate, and the heat resistance of sulfate is better than that of phosphite. The tribasic lead sulfate, which is widely used in the PVC industry, has a higher effective lead content and shows better thermal stability than other products.
(2) Excellent insulation. Because lead salt is non-ionic and non-conductive, it is inert, which makes lead salt stabilizers widely used in wire and cable industries.
(3) Excellent weather resistance. Many salt compounds can act as white pigments and can show strong covering power, so they have strong weather resistance.
(4) Poor transparency Transparency is a problem related to weather resistance. When used in wires, cables and record materials, there is no need to care about transparency, because most of these products are white or very dark black.
(5) Inexpensive lead salt stabilizer is the lowest price among all stabilizers. Therefore, despite the continuous introduction of new stabilizers, lead salt stabilizers still dominate the stabilizer market after half a century. The composite lead salt introduced to solve the dust and dispersion problem has increased in price, but still maintains a competitive advantage with other types of stabilizers.
(6) The toxicity of the toxic lead salt stabilizer limits its application in many occasions with strict hygiene requirements. For example, many countries have revised the lead content standards in drinking water, and it is no longer possible to use lead salt in PVC water pipes.
(7) Poor dispersibility The dispersibility of salt lead is poor, but the newly launched one-package product is equipped with lubricants, which solves the dispersibility problem to a certain extent. Because of the above characteristics of lead salt stabilizers, they are especially suitable for high-temperature processing. They are widely used in various opaque hard and soft products and cable materials, such as various pipes, plates, indoor and outdoor profiles, foam plastics, artificial leather, and wires. Cables, records, welding rods, etc. The most important lead salt stabilizers are tribasic lead sulfate, dibasic lead phosphite, and dibasic lead stearate.
1.3 Organic antimony
(1) Better stability. The organic antimony stabilizer has basically the same color stability and lower melt viscosity as organotin at the same temperature. In the twin-screw extrusion process, the effect is particularly outstanding when used in combination with calcium stearate. .
(2) The price of organic antimony stabilizer is much lower than that of methyl tin or butyl tin. In addition, the amount of organic antimony used is relatively low, so the use of organic antimony can achieve a better performance/price balance.
(3) The product is non-toxic. In the United States, when a twin-screw extruder is used to manufacture PVC pipes, the PVC water supply pipe manufactured with a formula composed of antimony stabilizers, calcium stearate and other lubricants conforms to the U.S. NSF (National Sanitation Foundation) )Regulation.
(4) Poor transparency and light stability. The transparency of organic antimony compounds is not as good as organotin stabilizers, and it is also lower than the barium/fu and calcium/zinc metal soap system. It is close to lead salts and has poor light stability, so antimony is stable. The agent is mostly used for indoor products without color requirements. The antimony stabilizer itself is also required to be stored in an opaque container.
(5) Poor lubricity. Antimony stabilizers have poor lubricity. Therefore, its use must be combined with a large amount of lubricant without exception.
1.4 Metal soap
(1) The tin soap stabilizer Fu soap is the best type of metal soap. Its advantages are also reflected in the absence of initial coloring, and can produce colorless and transparent products; excellent light stability; it has the effect of preventing precipitation and adhesion. . However, because tin salt is toxic, there are strict regulations on its manufacture and use in the Labor Safety and Health Law. In recent years, the use of Fuzao has shown a downward trend.
(2) Zinc soap stabilizerThe thermal stability of zinc-based stabilizer to PVC is extremely poor. The sample with zinc soap suddenly turns black when heated, that is, the so-called "Zine burning" phenomenon occurs, but it has the following advantages: The initial coloring is excellent; the effect of preventing fouling is good; it can improve the weather resistance; many zinc soaps are recognized as non-toxic stabilizers, so they can be used in non-toxic formulations with calcium soaps.
(3) Barium soap stabilizer Barium compounds have good thermal stability and good lubricity, but the red initial coloration occurs during processing, and it is easy to cause sticking to the roller.
(4) The stability of calcium soap stabilizer is poor, but it is recognized as a non-toxic additive in the world and has excellent lubricity.
(5) Other metal soap stabilizers used in the industry include magnesium stearate, file stearate, aluminum stearate, potassium stearate, etc., among which magnesium stearate is similar to calcium stearate and can be used Materials that are in contact with food; aluminum stearate is similar to zinc stearate, and is approved by the U.S. FDA and the Japanese Vinyl Chloride Food Hygiene Association for food packaging; Stearic Acid files and potassium stearate are also non-toxic products and belong to lead salts , Tin soap and barium soap substitute.
(6) The performance requirements of the composite metal soap stabilizer processing industry for stabilizers are various, and a single metal soap often cannot meet the use requirements, so the use of composite stabilizers has become a trend. A single metal soap compound is rarely used in the PVC industry, and it is usually a compound of several metal soaps. This compound is not a simple addition of properties, but takes advantage of the synergy between the components. The composite metal soap stabilizer generally includes the stabilizer main body (i.e. metal soap), solvent (organic solvent, plasticizer, liquid non-metal stabilizer, etc.), functional additives (auxiliary stabilizer, transparency modifier, light stabilizer, Lubricants, etc.). According to the form, it is divided into solid compound and liquid compound. According to the main component, it can be divided into calcium/zinc compound stabilizer, barium/fu compound stabilizer, barium/zinc compound stabilizer, etc. Among them, the calcium/zinc composite stabilizer has a pivotal role in replacing toxic metals because it is non-toxic.
1.5 Rare earth stabilizer
(1) Excellent thermal stability The thermal stability of rare earth stabilizers is better than traditional lead salt series and barium/zinc, barium/ho/zinc stabilizers. In some applications, rare earth stabilizers can partially or completely replace organotin.
(2) Good transparency. The refractive index of rare earth stabilizers is very close to that of PVC Resin, which can replace traditional organotin and be used in the field of products with higher transparency requirements.
(3) Excellent weather resistance. Rare earth elements can absorb 230-320nm ultraviolet light. Therefore, rare earth stabilizers have anti-photoaging effects and are suitable for outdoor products such as PVC corrugated boards and window materials.
(4) Excellent electrical insulation properties. Some rare earth multifunctional stabilizers can be used to replace lead salt stabilizers in cable material formulations, and their electrical insulation properties are comparable to lead salts.
(5) Non-toxic, safe and hygienic. Rare earth elements are low-toxic elements and have no toxic hazards to the human body in their production, processing, transportation and storage. Rare earth stabilizers are non-toxic products and can be used in food packaging and medical packaging products.
(6) The processing performance is slightly worse. In the case of a large amount of rare earth stabilizer, the roll release of the material is not ideal, and there is a tendency to press out. Generally, better results can be achieved by using stearic acid or calcium stearate in combination.
In summary, rare earth stabilizers can be used for water pipes, injection pipe fittings, window frame profiles, door panels, wire ducts, foam products, artificial leather, cable materials, soft and hard transparent products, food packaging materials, etc.
1.6 Auxiliary stabilizers Auxiliary stabilizers include phosphite, epoxy soybean oil, hindered phenols, etc., which mainly rely on the synergistic effect between metal stabilizers to improve the stabilizing effect, and are generally called co-stabilizers. In addition to compounds such as mesaminocrotonic acid ester, 2-phenyl saccharin, vein derivatives, and diketone can be used in combination with metal stabilizers to improve the effect of metal stabilizers, they also have a certain stabilizing effect. Such compounds are usually called pure organic stabilizers. With the development of PVC stabilizers today, the progress of metal stabilizers is relatively slow, and the research and development of auxiliary stabilizers are unprecedentedly active, which has constituted a major trend in the field of PvC stabilizers. Auxiliary stabilizers are rarely used alone, and are often used in conjunction with primary stabilizers to improve initial coloration or improve long-term stability.
Commissary boss spends 30,000 yuan to shoot love theme movie
Commissary boss spends 30,000 yuan to take love theme movie diesel generator | diesel generator price / 2012-09-25
Commissary boss 30,000 yuan to shoot love movie
Alarmed CCTV Movie Channel
Self-directed, self-directed and self-publishing composer
A fork stick microphone, female one stunned
He opened the canteen, and worked as a mechanic in Guangzhou for 10 years. He graduated from junior high school but has a director's dream.... Nearly, Yongchuan guy Li Chengjun spent 30,000 yuan on self-directed microfilm "Lovers" to instigate CCTV movie channel. They made a special trip from Chongqing to Chongqing for an interview with Li Chengjun for 4 days, and also provided assistance for the shooting of his next movie.
Adhere to the dream, the dream also illuminated Li Chengjun. "I will shoot an action movie in the next movie. I won't give up until I finish the film." Yesterday, Li Chengjun confidently told the Chongqing Evening News reporter.
Candidate Out of Film Director
Li Chengjun, 26, is from Chen Shizheng, Yongchuan District. He is directed by the grassroots and another is the owner of the Commissary.
Yesterday, a Chongqing Evening News reporter saw Li Chengjun in a commissary in a residential neighborhood next to the Chongqing University of Arts and Sciences in Yongchuan. He was black and thin and less than 1.6 meters tall and he was greeting guests.
Chongqing Evening News reporter saw that the canteen area was less than 18 square meters and was separated into two floors. The lower storey is a storefront and distribution place. On the upper floor, a place less than 5 square meters is Li Chengjun's bedroom and "post-production center." "The script of the film "Lovers" is that I am on this old computer, knocking out one by one." Li Chengjun said.
10 years ago, Li Chengjun, a junior high school graduate, went to Guangzhou to work as a lathe. In private, he is not the same as other workers. He is a literary youth.
"When people drink and chat, I'm fascinated by composing." Li Chengjun said that after saving money and buying a computer, half his spare time spent his time studying music software. "A lot of songs in Lovers is my computer." The software produced it."
In addition to composing, Li Chengjun is also interested in martial arts. “Normally, I would like to find a friend to practice Sanda and practice on my own.†After returning to Chongqing last year, Li Chengjun asked his friends to look around for the role of the crew. “I hope to show off a half-faced character and have had an addiction.†."
"Not to mention, I mixed several TV dramas." Li Chengjun proudly stated that he had been an extras in TV dramas "Chongqing Beauty" and "Chuanjun Guerrilla". "The original role of the Sichuan Army Guerrillas" There were several lines, but they were later deleted and aired only with the words "Yes, open the door."
From run to cover writing script
"Actor is very addictive. I increasingly want to lead a show myself and play it myself." Li Chengjun said that since 2008, he began shooting short films. "I think we all started by shooting short videos." Li Chengjun Saying that later, he shot a movie called “Haunted House†that was also watched by Excited Network. “The website had 500 yuan to buy my short video. I didn’t do it. I’ve spent so much hard work before they Give this money."
Gradually, the idea of ​​shooting a full-length feature film was formed in Li Chengjun's mind. “At that time, I had used my working capital to open a small processing plant in partnership with a friend, but the factory’s business was not good.†Li Chengjun said that in 2011, he sold the factory and distributed 50,000 yuan, let him See the hope of making a movie.
I am a martial arts fan. My first movie must be an action movie! The dream is very full, but the reality is very skinny. "Action films are indispensable for martial arts. What if an actor is injured? The big scenes such as overturning and saving people are more difficult to support..." Helpless, Li Chengjun had to take motion picture ideas. Stranded and began to sit in front of the computer, trying hard to write a script for a low-cost art romance film.
Retiring for five months, in the second half of 2011, Li Chengjun completed the script creation. In December, the film was filmed.
Shooting a love movie with a fork stick
To make a movie, you must first have equipment. With a small amount of money in the purse, Li Chengjun, a high-end professional equipment, gave up for the first time. “It took about 5,000 yuan to buy a SLR camera that can shoot high-definition video, and then spent a few hundred dollars to buy a microphone to pick up. Even if the equipment is purchased,†said Li Chengjun. As for the stand of the microphone, he used his own home. Replaced by a plastic fork stick.
The second step is to find actors. The actor is naturally Li Chengjun. How about the heroine and the supporting actress? "I have to admit that I used a little trick." Li Chengjun said that he found an economic company, falsely claimed that he was a film school student in Beijing, to take graduation works, so "flicker" to the two actresses.
However, when the actor arrived on the first day of the shooting scene, he quit. “When the actress saw us, she would strike.†said Li Chengjun. When he lifted the SLR camera and asked her friend to use a plastic fork to hold up the microphone, the heroine was stunned and was about to leave. Say good to say, Li Chengjun barely left the heroine.
"On the second day and the third day, the heroine said several times to go. Until the fourth day, the heroine saw us use such a bad device, or in the eight movies, was moved by our determination. Finally willing to accompany me to make a complete movie." Li Chengjun said.
There was a scene in which the mother who took the lead actress was vomiting blood, but there was no false plasma at the scene. Several pharmacies ran away and could not find suitable alternatives. Later, he thought of an extreme solution—cut his fingers, squeezed out a small cup of blood, and quietly gave the actor blood plasma. "After the actor got the plasma, he asked me, this is a scorpion thing, so it's not like blood." After that, Li Chengjun laughed.
The crew is chilly but warm. "We have nothing, lack of venues, lack of props, or even unable to open a meal." Li Chengjun recalled that after he found a friend who opened a restaurant, the other party was impressed by his obsession, and promised the crew to eat for free in his restaurant.
Showing a box office less than 50 yuan
Hard to shoot more than 20 days, in January this year, Li Chengjun self-directed self-directed performance of the first art romance film, up to 90 minutes of "Lovers" finally killed. After that, he hid on the second floor of the canteen and spent 3 months in the later period. In April, "Lovers" were all completed. Then, Li Chengjun fell into the quest for distribution.
“The movie is about to be shown to the audience, but which one is willing to let me go?†said Li Chengjun. One day he accidentally saw in the newspaper that someone had played a short film at Poly Studios in the university town. So he took his own movie demo and found the cinema manager.
After seeing the film, the manager agreed to let Li Chengjun play a game in the open period. "This news made me ecstatic!" said Li Chengjun. After that, he began to distribute leaflets to schools near the cinema to promote his own films.
"I am ashamed. I would like to find a place to drill in." Li Chengjun recalled that when he took the leaflets to enter a certain college to do propaganda, he was expelled from the school gate by security guards as an advertisement. "One of them said that I am also the director of this film, thiophene, I am afraid that no film director will do this promotion, but also was driven away."
Li Chengjun said that because he did not obtain a public license, he could only make non-profit screenings at a price of 5 yuan per ticket. "Although, none of them are willing to read my movie. There are less than 10 people who buy tickets. Later, I did not receive any money, and I came to more than 10 people afterwards.†Li Chengjun said that this result gave him some hopelessness.
The Love Story Synopsis
The girl is dependent on the seriously ill mother and the family suffers. One day, the girl went to the hospital to help her mother get medicine. Because the time was too late, she hit a motorcycle. The driver of the motorcycle was a young man. The girl sitting in the back seat found that the young man had a bulging purse.
The girl took the wallet and bought a lot of food for her mother with the stolen money. Unexpectedly, when she got home and was seen by her mother, the mother asked her to pay back the money. The girl found the boy apologized and told him that he just wanted to make her mother live better. The young man has been taking care of the mother and daughter since then and has helped the girl's mother come to an end.
As the relationship between the two became clearer, a sudden car accident took the young man's life.
National secondary actors
Teach him to act
"Is Li Chengjun you? I am a director of CCTV. I watched you make a movie. I wanted to do a show for you." In August this year, a phone call made him ecstatic and then he fell into doubt again. "I'm all I couldn't believe it. I thought it was a liar. I just believed in the sample I had before.
On September 20th, the CCTV movie channel “Movies for Schooling†column group came to Yongchuan. What makes Li Chengjun excited is that together with the national secondary actor Guo Qiucheng. "Mr. Guo taught me to play for 4 days." Li Chengjun said that CCTV director and Guo teacher spent the four days with him and he learned a lot.
Yesterday, Chongqing Evening News reporter contacted the column director Wang Yuke. “The young man's love for and obsession with the movie impressed us. We are willing to help such a young man with a movie dream.†Wang Xieke said that he knew that Li Chengjun wanted to shoot in Songhe Ancient Town. They specially visited Yongchuan Pine with Li Chengjun. Irrigation town, and help him to connect with the local government, I hope the other party to cooperate with the provision of shooting venues.
On October 18th, a documentary around Li Chengjun will be broadcast on CCTV's movie channel column, “Action to Send Film to Schoolâ€.
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